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CN-224215590-U - Four-way valve cold and hot machine

CN224215590UCN 224215590 UCN224215590 UCN 224215590UCN-224215590-U

Abstract

The utility model is used in the technical field of cold and hot water units, and discloses a four-way valve cold and hot machine, which comprises an outer box body, wherein an upper cover is fixedly arranged at the upper end of the outer box body through bolts, a main machine and an evaporator are fixedly arranged in the outer box body, a liquid inlet pipe and a liquid outlet pipe are arranged on the side surface of the main machine, a mounting plate is fixedly arranged on the outer side surface of the main machine, and a non-return mechanism is arranged on the upper surface of the mounting plate. According to the four-way valve cold and hot machine, through the linkage structure of the switching disc, the diversion trench and the one-way valve integrated in the non-return mechanism, accurate non-return and energy efficiency improvement are realized by switching the one-way valves with different damping characteristics, the on-off control of the electromagnetic valve on a liquid outlet path is matched, the dual protection of mechanical damping non-return and electric control path cutting is formed, and the backflow and the communication of hot gas through the gap between the four-way valve and the non-return box are thoroughly blocked.

Inventors

  • Fan Fuguang

Assignees

  • 东莞市广越节能科技有限公司

Dates

Publication Date
20260508
Application Date
20250609

Claims (7)

  1. 1. The four-way valve cooling and heating machine comprises an outer box body (1), wherein an upper cover (2) is fixedly arranged at the upper end of the outer box body (1) through bolts, a main machine (3) and an evaporator (6) are fixedly arranged in the outer box body (1), a liquid inlet pipe (4) and a liquid outlet pipe (5) are arranged on the side surface of the main machine (3), and one ends of the liquid inlet pipe (4) and the liquid outlet pipe (5) penetrate through the outer side surface of the outer box body (1), and the four-way valve cooling and heating machine is characterized in that a mounting plate (7) is fixedly arranged on the outer side surface of the main machine (3), a non-return mechanism is arranged on the upper surface of the mounting plate (7), and heat loss is reduced by preventing hot air backflow and communication so as to increase energy efficiency.
  2. 2. The four-way valve cooling and heating machine according to claim 1, wherein the non-return mechanism comprises a four-way valve (8), the four-way valve (8) is fixedly arranged on the upper surface of an installation plate (7), a non-return box (9) is fixedly arranged on the upper surface of the installation plate (7) below the four-way valve (8), a liquid inlet groove (10) and a liquid outlet groove (11) are formed in the upper end of the non-return box (9), an electromagnetic valve (12) is fixedly connected to the upper end of the liquid outlet groove (11), a switching motor (13) is fixedly arranged in the lower end of the non-return box (9), a switching disc (14) is fixedly connected to the upper end of an output shaft of the switching motor (13), a guide groove (15) is formed in the interior of the switching disc (14), and a one-way valve (16) is fixedly arranged in the middle section of the guide groove (15).
  3. 3. The four-way valve heat and cold machine according to claim 2, wherein the upper end of the liquid inlet groove (10) is connected with one end of the four-way valve (8), and the lower section of the liquid inlet groove (10) penetrates through the inner top surface of the non-return box (9).
  4. 4. The four-way valve heat and cold machine according to claim 2, wherein the lower end of the liquid outlet groove (11) penetrates through the inner top surface of the non-return box (9), and the lower ends of the liquid outlet groove (11) and the liquid inlet groove (10) are respectively positioned at two ends of the non-return box (9).
  5. 5. The four-way valve heat and cold machine according to claim 2, wherein one end of the electromagnetic valve (12) is connected with one end of the evaporator (6), and the lower end of the electromagnetic valve (12) is communicated with the upper end of the liquid outlet groove (11).
  6. 6. The four-way valve cold and hot machine according to claim 2, wherein the outer side surface of the switching disc (14) is attached to the inner side surface of the non-return box (9), and the switching disc (14) and the non-return box (9) are concentrically arranged.
  7. 7. The four-way valve heat and cold machine according to claim 2, wherein different guide grooves (15) are located at different heights, the guide grooves (15) are not communicated with each other, two ends of each guide groove (15) penetrate through the upper surface of the switching disc (14), and two ends of each guide groove (15) are opposite to the liquid inlet groove (10) and the liquid outlet groove (11) respectively.

Description

Four-way valve cold and hot machine Technical Field The utility model relates to the technical field of cold and hot water units, in particular to a four-way valve cold and hot machine. Background In modern industrial production and daily life, a cold-hot water unit is used as core equipment for realizing heat exchange and temperature regulation, and is widely applied to the fields of central air conditioning systems, industrial process temperature control, new energy automobile heat management and the like, a four-way valve is used as a key component for realizing refrigeration and heating mode switching in a cold-hot machine, the performance quality of the four-way valve directly influences the energy efficiency level and the operation stability of the unit, and the problems of inaccurate pressure fluctuation and flow direction control and the like exist in the conventional four-way valve cold-hot machine in the operation process due to fluid reversing, so that hot air backflow and series-connection phenomenon easily occurs, heat is lost in invalid circulation, the energy efficiency of the unit is reduced, the energy consumption is increased, and even system faults are caused; In the prior art, although the check structures such as the check valve and the sealing valve clack are adopted for solving the problem of hot gas backflow, the defects of delayed check response, insufficient sealing reliability, increased fluid resistance caused by complex structure and the like generally exist, for example, the traditional mechanical sealing type check device relies on spring force or gravity to realize unidirectional conduction, is easy to wear and clamp sealing elements under high-frequency switching working conditions, cannot effectively change complex fluid pressure, and has the problems of complex control logic, high energy consumption and the like for part of the electric control check structure, so that the balance between the improvement of energy efficiency and the simplification of a system is difficult. Disclosure of utility model The utility model aims to provide a four-way valve cold and hot machine, which solves the problems of high heat loss and low energy efficiency caused by hot air backflow and serial connection of the traditional four-way valve cold and hot machine in the background technology, and the problems of response lag, insufficient sealing reliability and high fluid resistance of the traditional non-return structure. The four-way valve cooling and heating machine comprises an outer box body, wherein an upper cover is fixedly arranged at the upper end of the outer box body through bolts, a main machine and an evaporator are fixedly arranged in the outer box body, a liquid inlet pipe and a liquid outlet pipe are arranged on the side surfaces of the main machine, one ends of the liquid inlet pipe and the liquid outlet pipe penetrate through the outer side surface of the outer box body, a mounting plate is fixedly arranged on the outer side surface of the main machine, and a non-return mechanism is arranged on the upper surface of the mounting plate; The non-return mechanism comprises a four-way valve, wherein the four-way valve is fixedly arranged on the upper surface of a mounting plate, a non-return box is fixedly arranged on the upper surface of the mounting plate below the four-way valve, a liquid inlet groove and a liquid outlet groove are formed in the upper end of the non-return box, an electromagnetic valve is fixedly connected to the upper end of the liquid outlet groove, a switching motor is fixedly arranged in the lower end of the non-return box, a switching disc is fixedly connected to the upper end of an output shaft of the switching motor, a diversion trench is formed in the switching disc, and a one-way valve is fixedly arranged in the middle section of the diversion trench. Preferably, the upper end of the liquid inlet groove is connected with one end of the four-way valve, and the lower section of the liquid inlet groove penetrates through the inner top surface of the non-return box. By adopting the technical scheme, the fluid flowing out of the four-way valve can be ensured to smoothly enter the liquid inlet groove, a stable channel is provided for the subsequent flow in the non-return box and non-return control, the flow path of the fluid in the equipment is clear and coherent, the problems of leakage or unsmooth flow are avoided, and the normal operation of the non-return mechanism is ensured. Preferably, the lower end of the liquid outlet groove penetrates through the inner top surface of the non-return box, and the lower ends of the liquid outlet groove and the liquid inlet groove are respectively positioned at two ends of the non-return box. By adopting the technical scheme, the liquid inlet groove and the liquid outlet groove form relatively independent fluid channels in the non-return box, so that the unidirectional flow control of fluid is realized, when the switc