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CN-122015274-A - Heat preservation ventilation unit for low-carbon building

CN122015274ACN 122015274 ACN122015274 ACN 122015274ACN-122015274-A

Abstract

The application relates to the technical field of low-carbon building ventilation equipment, and discloses a heat-insulating ventilation device for a low-carbon building. The intelligent air-conditioning system comprises a box body arranged on the outer vertical surface of a building, wherein a waste heat recovery system is arranged in the box body, an indoor air inlet assembly and an outdoor air inlet assembly are respectively connected with corresponding inlets of the waste heat recovery system, an outdoor air pipeline is connected with an outdoor outlet of the indoor air inlet assembly and is communicated with an indoor exhaust pipe, a runner switching assembly comprises a three-way pipe, a second exhaust pipe, an indoor exhaust pipe and a valve switching mechanism, two groups of valve cores are respectively arranged in the two exhaust pipes in a sliding mode, the valve driving mechanism drives the valve cores to slide, and a first temperature sensor is arranged in a cold air bin of the waste heat recovery system and is electrically connected with a PLC (programmable logic controller) plate. The PLC plate reads temperature data, the position of the valve core is adjusted to switch the flow channel, outdoor fresh air is fed into a room after being preheated by waste heat recovery, the problem that the indoor temperature is rapidly reduced during ventilation in winter is effectively solved, and the coordination of ventilation, heat preservation and energy conservation is realized.

Inventors

  • YANG YUJUN
  • WANG KAIXU
  • HAN XIAOXUE
  • ZHOU MENGYUAN
  • WANG XINHUI
  • LI BAITONG
  • ZHOU DIAN
  • QI YINGTAO

Assignees

  • 西安交通大学

Dates

Publication Date
20260512
Application Date
20260306

Claims (10)

  1. 1. A low-carbon thermal insulation ventilation device for building, characterized by comprising: The box body (100) is arranged on the outer vertical surface of the building; The waste heat recovery system (200) is arranged in the box body (100); An indoor air inlet assembly (300), wherein the air inlet end is arranged on an indoor wall, and the other end is connected with an indoor air inlet of the waste heat recovery system (200); An outdoor air inlet assembly (400), wherein an air inlet end is arranged on the outer wall of the box body (100), and the other end is connected with an outdoor air inlet of the waste heat recovery system (200); an outdoor gas pipe (500), one end of which is connected with an outdoor gas outlet of the waste heat recovery system (200); The runner switching assembly (600) comprises a three-way pipe (610), a second exhaust pipe (620), an indoor exhaust pipe (630) and a valve switching mechanism (640), wherein a first end of the three-way pipe (610) is connected with an indoor gas discharge port of the waste heat recovery system (200), one end of the second exhaust pipe (620) is connected with a second end of the three-way pipe (610), the other end of the second exhaust pipe is connected with the outer wall of the box body (100), one end of the indoor exhaust pipe (630) is connected with a third end of the three-way pipe (610), the other end of the indoor exhaust pipe is arranged on an indoor wall, the valve switching mechanism (640) is arranged in the box body (100) and is provided with two groups of valve cores, and the two groups of valve cores are respectively arranged in the second exhaust pipe (620) and the indoor exhaust pipe (630) in a sliding manner and are used for sealing the connection positions of the second exhaust pipe (620) and the indoor exhaust pipe (630) and the three-way pipe (610). The output end of the valve driving mechanism (700) is in driving connection with two groups of valve cores, and the valve driving mechanism is used for driving the two groups of valve cores to slide in the second exhaust pipe (620) and the indoor exhaust pipe (630) respectively; A first temperature sensor (800) with an identification end arranged in a cold air bin of the waste heat recovery system (200); A PLC board (900), wherein the first temperature sensor (800) and the valve driving mechanism (700) are electrically connected with the PLC board (900), and the valve driving mechanism is electrically connected with the PLC board One end of the outdoor gas pipeline (500) far away from the waste heat recovery system (200) is communicated with the indoor exhaust pipe (630), and the PLC board (900) is used for reading data of the first temperature sensor (800) and adjusting positions of two groups of valve cores in the second exhaust pipe (620) and the indoor exhaust pipe (630) respectively through the valve driving mechanism (700).
  2. 2. The low-carbon construction thermal insulation ventilation device according to claim 1, wherein the valve switching mechanism (640) comprises: The first plug (641) is arranged in the second exhaust pipe (620) in a sliding manner and is used for blocking the connection part of the second exhaust pipe (620) and the three-way pipe (610); The second plug (642) is arranged in the indoor exhaust pipe (630) in a sliding manner and is used for plugging the connection position of the indoor exhaust pipe (630) and the three-way pipe (610).
  3. 3. The low-carbon construction thermal insulation ventilation device according to claim 2, wherein the valve driving mechanism (700) comprises: One end of the first extension rod (710) is fixedly connected with the first plug (641); one end of the second extension rod (720) is fixedly connected with the second plug (642), and the first extension rod (710) and the second extension rod (720) are arranged in parallel; a first guide groove (711) provided on the outer wall of the first extension rod (710); And the second guide groove (721) is formed in the outer wall of the second extension rod (720), and the cross sections of the first guide groove (711) and the second guide groove (721) are right-angled triangles.
  4. 4. A low-carbon construction thermal insulation ventilation device according to claim 3, wherein the valve driving mechanism (700) further comprises: A drive rod (730) provided between the first extension rod (710) and the second extension rod (720); The triangular plates (740) are provided with two groups, and the two groups of triangular plates (740) are respectively and fixedly arranged at two ends of the driving rod (730) and are respectively and slidably arranged in the first guide groove (711) and the second guide groove (721); A clamping plate (750) fixedly arranged in the box body (100), and the driving rod (730) is arranged in the clamping plate (750) in a sliding way; The electric push rod (760) is arranged on one side of the driving rod (730), the fixed end of the electric push rod is arranged in the box body (100), the output end of the electric push rod is fixedly connected with the side wall of the driving rod (730), the electric push rod (760) is electrically connected with the PLC plate (900), the PLC plate (900) is used for identifying the temperature in the waste heat recovery system (200) and adjusting the horizontal position of the driving rod (730), and the driving rod (730) drives the first plug (641) and the second plug (642) through the triangular plate (740) to slide in the second exhaust pipe (620) and the indoor exhaust pipe (630).
  5. 5. The low-carbon construction thermal insulation ventilation device according to claim 4, wherein the waste heat recovery system (200) comprises: The shell (210) is internally provided with an air inlet region (211), a buffer region (212) and a transition region (213), wherein the air inlet region (211), the buffer region (212) and the transition region (213) are sequentially arranged along the gas flow direction; The double partition plates (220) are fixedly arranged in the shell (210) at intervals and are used for separating the air inlet region (211), the buffer region (212) and the transition region (213); The honeycomb tubes (230) are arranged in a plurality, the honeycomb tubes (230) are fixedly arranged in the transition area (213) at intervals, and two ends of each honeycomb tube (230) are respectively communicated with the air inlet area (211) and the buffer area (212); an air inlet end of the indoor fan (240) is fixedly connected with one end of the three-way pipe (610), and the air inlet end of the indoor fan (240) is communicated with the buffer area (212), wherein One end of the indoor air inlet assembly (300) far away from the indoor is communicated with the air inlet area (211), one end of the outdoor air inlet assembly (400) close to the waste heat recovery system (200) is communicated with the transition area (213), and the identification end of the first temperature sensor (800) is arranged in the transition area (213).
  6. 6. The low-carbon construction thermal insulation ventilation device according to claim 5, wherein the indoor air intake assembly (300) comprises: one end of the first L pipe (310) penetrates through the box body (100) to be fixedly connected with an indoor gas inlet of the waste heat recovery system (200), the other end of the first L pipe is arranged in an indoor wall drilling hole, and one end, close to the indoor space, of the first L pipe (310) is obliquely arranged upwards; The air inlet cover plate (320) is provided with a plurality of air inlet through holes on the peripheral outer wall, and the air inlet cover plate (320) is in threaded connection with the inner wall of one end, close to the room, of the first L pipe (310); an air inlet filter element (330) which is arranged on the inner wall of one end of the first L pipe (310) close to the indoor space; A sound damping cotton (340) wrapped around the circumferential outer wall of the first L-shaped pipe (310) and positioned between the first L-shaped pipe (310) and the wall borehole, wherein The inner wall of the first L pipe (310) is provided with a boss (311), and the boss (311) is used for limiting the air inlet filter element (330) to axially slide along the first L pipe (310).
  7. 7. The low-carbon construction thermal insulation ventilation device according to claim 6, wherein the outdoor air intake assembly (400) comprises an electrothermal filter mechanism (410), the electrothermal filter mechanism (410) comprising: The air inlet hopper (411) is fixedly arranged on the inner bottom surface of the box body (100), and the large opening end of the air inlet hopper (411) is communicated with the outer wall of the box body (100); one end of the extension tube (412) is fixedly connected with the small opening end of the air inlet hopper (411) and is vertically arranged; The electric heating bin (413) is cylindrical, two ends of the electric heating bin are sealed, the electric heating bin (413) and the extension pipe (412) are coaxially arranged, and one end, far away from the air inlet hopper (411), of the extension pipe (412) penetrates through the bottom surface of the electric heating bin (413) and extends into the electric heating bin (413); The electric heating wire (414) is arranged between the interlayers of the electric heating bin (413), the electric heating bin (413) is of a double-layer structure, the electric heating wire (414) is electrically connected with the PLC board (900), and the PLC board (900) is used for adjusting the power of the electric heating wire (414) by identifying the temperature in the waste heat recovery system (200); a spiral scraping plate (415) is coaxially and fixedly arranged on the inner wall of the electric heating bin (413); The air filter (416) is arranged in the electric heating bin (413), the circumferential outer wall of the electric heating bin is abutted with the spiral scraping plate (415), and one side, close to the air filter (416), of the spiral scraping plate (415) extends downwards vertically.
  8. 8. The low-carbon construction insulation and ventilation device according to claim 7, wherein the outdoor air intake assembly (400) further comprises a cartridge drive mechanism (420), the cartridge drive mechanism (420) comprising: a driving motor (421) fixedly installed in the case (100); one end of the swinging rod (422) is fixedly connected with the output end of the driving motor (421); The guide rail (423) is horizontally arranged, and one end, far away from the driving motor (421), of the swinging rod (422) is slidably arranged in the guide rail (423); the vertical block (424) is fixedly arranged at the lower part of the guide rail (423) and is fixedly connected with the bottom surface of the guide rail (423); the sliding rail (425) is fixedly arranged on the inner wall of the box body (100), and the vertical block (424) is vertically arranged in the sliding rail (425) in a sliding way; the sliding groove (426) is horizontally arranged on the surface of the vertical block (424); the rack (427) is arranged in the chute (426) in a sliding manner; A gear (428) provided on the surface of the vertical block (424) and engaged with the rack (427); The vertical rods (429) are vertically arranged on the surface of the vertical block (424) at intervals, and the gears (428) are fixedly sleeved on the circumferential outer wall of the vertical rods (429); The mounting lugs (430) are provided with two groups, the two groups of mounting lugs (430) are fixedly arranged on the surface of the vertical block (424) along the vertical interval, the upper parts of the vertical rods (429) are rotatably arranged in the two groups of mounting lugs (430), and the bottom ends of the vertical rods (429) are fixedly connected with the top surface of the air filter (416); A first air duct (431), one end of which is communicated with the inner wall of the air filter (416); The air storage box (432) is fixedly arranged in the box body (100), and the other end of the first air guide pipe (431) is fixedly connected with the air storage box (432); one end of the second air duct (433) is fixedly connected with the air storage box (432); An outdoor fan (434), wherein the air inlet end is fixedly connected with the other end of the second air duct (433); And one end of the third air duct (435) is fixedly connected with the air outlet of the outdoor fan (434), and the other end of the third air duct is communicated with the outdoor air inlet of the waste heat recovery system (200).
  9. 9. The low-carbon construction insulation and ventilation device according to claim 8, wherein the outdoor air intake assembly (400) further comprises a steam sterilization mechanism (436), the steam sterilization mechanism (436) comprising: an electrothermal steam generator (437) fixedly arranged in the box body (100); a water supply pipe (438), one end of which is fixedly connected with a water supplementing port of the electric heating steam generator (437), and the other end of which passes through the outer wall of the box body (100) and is arranged at one end, close to the indoor space, of the indoor air inlet assembly (300); One end of a steam pipe (439) is fixedly connected with a steam output port of the electric heating steam generator (437); an elastic air bag (440) arranged in the box body (100) and fixedly connected with the other end of the steam pipe (439); One end of the guide rod (441) is fixedly arranged on one side of the driving motor (421), the other end of the guide rod is close to the vertical rod (429), and the elastic air bag (440) is sleeved on the outer wall of the guide rod (441); the pressing plate (442) is sleeved on the circumferential outer wall of the guide rod (441) in a sliding manner, one surface of the pressing plate (442) is fixedly connected with the end part of the elastic air bag (440), and one end of the rack (427) is fixedly connected with one surface, far away from the elastic air bag (440), of the pressing plate (442); And one end of the air ejector tube (443) is fixedly connected with the elastic air bag (440), and the other end of the air ejector tube penetrates through the top surface of the electric heating bin (413) and extends into the air filter (416).
  10. 10. The low-carbon building heat-insulating ventilation device according to claim 9, wherein one end of the water supply pipe (438) close to the room is arranged corresponding to one end of the first L pipe (310) of the indoor air intake assembly (300) close to the room, the air injection pipe (443) extends to one end in the air filter (416) to form a plurality of steam injection holes, the plurality of steam injection holes are uniformly distributed along the circumferential direction of the air injection pipe (443), and the elastic air bag (440) contracts and expands along with the sliding of the pressing plate (442) and is used for injecting steam to the inner wall of the air filter (416) through the air injection pipe (443).

Description

Heat preservation ventilation unit for low-carbon building Technical Field The application relates to the technical field of indoor ventilation equipment, in particular to a heat preservation and ventilation device for a low-carbon building. Background In the low-carbon building field, the heat preservation ventilation device is core equipment for balancing indoor air quality and energy consumption control, and is used for realizing efficient circulation of indoor and outdoor air and avoiding excessive indoor energy loss caused by ventilation. However, when the existing ventilation equipment is used in a low-temperature environment in winter, technical pain points for rapidly reducing indoor temperature are commonly existed, and living comfort and energy-saving effects are seriously affected. The indoor and outdoor temperature difference in winter can reach 20-30 ℃, the conventional ventilation device mostly adopts a direct replacement ventilation mode, outdoor low-temperature air can directly enter the room without being effectively preheated, and the indoor low-temperature air is quickly mixed with indoor warm air, so that the indoor temperature is greatly reduced in a short time. In order to maintain proper temperature, the indoor heating system needs to run under high load continuously, so that not only is the energy consumption of the building increased remarkably, but also discomfort of a human body can be caused by temperature fluctuation. In the prior art, although a part of ventilation equipment integrates a simple waste heat recovery structure, a single heat exchange channel is adopted, the heat exchange efficiency is low, the heat carried by indoor exhaust air cannot be fully recovered, meanwhile, the air flow switching is dependent on manual operation or simple mechanical control, and the proportion of fresh air to return air is difficult to adjust in real time according to indoor and outdoor temperature changes, so that the preheating is not timely or the heat recovery is insufficient. In addition, partial equipment lacks the design of pertinence heat preservation and air current buffering, and the cold wind easily forms the direct-blowing air current when getting into indoor, has further aggravated indoor temperature inequality and somatosensory uncomfortable problem. In addition, the filtering and preheating functions of the existing ventilation equipment are mutually independent, dust and impurities carried by outdoor cold air are easy to block a heat exchange channel, heat exchange efficiency is reduced, condensed water is easy to accumulate in a pipeline in a low-temperature environment, and operation stability and service life of the equipment are affected. The problems are that the conventional ventilation device is difficult to realize effective balance of ventilation, heat preservation and energy conservation in winter, and the popularization and application of the conventional ventilation device in low-carbon buildings are limited. Therefore, developing a heat-preserving ventilation device capable of efficiently recovering waste heat, accurately adjusting air flow and avoiding rapid indoor temperature drop becomes a technical requirement to be solved in the current field. Disclosure of Invention According to the embodiment of the application, the heat-insulating ventilation device for the low-carbon building is provided, so that the problems that in the prior art, when ventilation is performed in winter, outdoor cold air is not effectively preheated and directly enters indoors, the indoor temperature is rapidly reduced, and air flow switching cannot be regulated in real time according to the temperature are solved, the indoor exhaust waste heat is effectively recovered to preheat outdoor fresh air, and the indoor temperature is prevented from being greatly fluctuated by switching a temperature sensing channel and a PLC (programmable logic controller) control channel, so that the ventilation and heat-insulating energy-saving effects are achieved. The embodiment of the invention provides a heat preservation and ventilation device for a low-carbon building, which comprises the following components: the box body is arranged on the outer vertical face of the building; the waste heat recovery system is arranged in the box body; the indoor air inlet assembly is arranged on an indoor wall, and the other end of the indoor air inlet assembly is connected with an indoor air inlet of the waste heat recovery system; the system comprises a box body, an outdoor air inlet assembly, an outdoor air pipeline, a flow channel switching assembly, a valve driving mechanism, a first temperature sensor, a first air inlet and a valve driving mechanism, wherein the other end of the outdoor air pipeline is connected with an outdoor air inlet of the waste heat recovery system, one end of the outdoor air pipeline is connected with an outdoor air outlet of the waste heat recovery system, the first end of the flow c