CN-122015171-A - Heat exchange device for shallow geothermal exchange system

CN122015171ACN 122015171 ACN122015171 ACN 122015171ACN-122015171-A

Abstract

The invention relates to the technical field of geothermal heat exchange, and discloses a heat exchange device used in a shallow geothermal heat exchange system, which comprises a heat exchanger, wherein a heating chamber, a heating chamber and a hot air chamber are arranged in the heat exchanger, and a preheating chamber is arranged on one side of the heat exchanger; compared with the prior art, the heat supply system can perform graded heat exchange and multi-form heating, has more abundant heat supply functions, is provided with the preheater, can preheat the water supply of the buried pipe through backwater, reduces backwater temperature and improves the total heat exchange amount of the buried pipe.

Inventors

ZHOU YANBIN
ZHANG HAIQUAN
Deng Tanke
WANG PINGJIAN
CAI ZHIQIANG
LI FENGBIN

Assignees

河北旭汇新能源科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260224

Claims (9)

1. The utility model provides a heat transfer device for among shallow geothermal heat exchange system, includes heat exchanger (1), is provided with heating chamber (11), heating room (12) and hot-blast room (13) in heat exchanger (1), and one side is provided with preheating chamber (2), its characterized in that: a hot water supply module (3) is arranged in the heating chamber (11), a heating module (4) is arranged in the heating chamber (12), a hot air module (5) is arranged in the hot air chamber (13), a preheating module (6) is arranged in the preheating chamber (2), and an adjusting heating module (7) is arranged at the top of the heat exchanger (1); The adjusting heat supply module (7) comprises a first heat supply pipe (71), a second heat supply pipe (72), a third heat supply pipe (73) and a preheating pipe (74), and the hot water supply module (3), the heat supply module (4), the hot air module (5) and the preheating module (6) are connected through the adjusting heat supply module (7) respectively.
2. A heat exchange device for a shallow geothermal exchange system according to claim 1, wherein the hot water supply module (3) comprises a heating heat exchanger (31) and a heat preservation water tank (32), the heating heat exchanger (31) is arranged above the heat preservation water tank (32), the top is connected with the adjusting heat supply module (7), the bottom is connected with the top of the heat preservation water tank (32) through a connecting pipe (35), a water supply pipe (36) is arranged on one side of the heating heat exchanger (31), a hot water pipe (37) is arranged on one side of the heat preservation water tank (32), and cold water enters the heat preservation water tank (32) through the connecting pipe (35) for preservation after being sent into the heating heat exchanger (31) through the water supply pipe (36) for heat exchange and is discharged through the hot water pipe (37).
3. A heat exchange device for use in a shallow geothermal exchange system according to claim 2 wherein the first heat supply tube (71) has one end connected to the thermal mass input of the heating heat exchanger (31) and the other end connected to the compressor output, the thermal mass output of the heating heat exchanger (31) being connected to the second heat supply tube (72).
4. A heat exchange device for use in a shallow geothermal exchange system according to claim 3, wherein a primary bypass pipe (76) is provided between the first heat supply pipe (71) and the second heat supply pipe (72), a first heat supply valve (711) is provided on the primary bypass pipe (76), and a primary bypass valve (761) is provided on the primary bypass pipe (76).
5. The heat exchange device for a shallow geothermal exchange system according to claim 2, further comprising a recovery heating assembly (33) comprising a water return pump (331) arranged between the heating heat exchanger (31) and the heat preservation water tank (32), wherein the water return pump (331) is provided with a water suction pipe (332) at an input end and a water supply pipe (333) at an output end, the water suction pipe (332) is connected with the bottom of the heat preservation water tank (32) at the other end, and the water supply pipe (333) is connected with the bottom of the heating heat exchanger (31) at the other end.
6. A heat exchange device for a shallow geothermal exchange system according to claim 2 wherein the bottom of the heat preservation water tank (32) is provided with a stirring assembly (34) comprising a stirring rod (344) vertically arranged in the heat preservation water tank (32), stirring blades (345) are arranged on the stirring rod (344), a driven turntable (343) is arranged at the bottom of the stirring rod, the driven turntable (343) is rotatably arranged on the bottom wall of the heat preservation water tank (32), a stirring motor (341) is arranged below the heat preservation water tank (32), and a driving turntable (342) magnetically coupled with the driven turntable (343) is arranged on a driving shaft of the stirring motor (341).
7. A heat exchange device for use in a shallow geothermal exchange system according to claim 1 wherein the heating module (4) comprises a heating heat exchanger (41), the thermal mass input of the heating heat exchanger (41) is connected to a second heating pipe (72), the thermal mass output is connected to a third heating pipe (73), a secondary bypass pipe (77) is disposed between the second heating pipe (72) and the third heating pipe (73), a secondary bypass valve (771) is disposed on the secondary bypass pipe (77), and a second heating valve (721) is disposed on the second heating pipe (72).
8. The heat exchange device for the shallow geothermal exchange system according to claim 1, wherein the hot air module (5) comprises a heat exchange coil (51) vertically arranged in the hot air chamber (13), an air guide partition plate (131) is horizontally arranged in the hot air chamber (13), a filter (53) is vertically arranged between the air guide partition plate (131) and the bottom of the hot air chamber (13), an exhaust fan (55) is arranged at the top of the hot air chamber (13), an air inlet window (52) is arranged on one side corresponding to the filter (53), and an air equalizing plate (54) is vertically arranged between the other side and the air guide partition plate (131).
9. The heat exchange device for the shallow geothermal exchange system according to claim 8, wherein the input end of the heat exchange coil (51) is connected with a third heat supply pipe (73), the output end of the heat exchange coil is connected with the preheating module (6) through a preheating pipe (74), a third-stage bypass pipe (78) is arranged between the third heat supply pipe (73) and the preheating pipe (74), the third-stage bypass pipe (78) is provided with a third-stage bypass valve (781), and the third heat supply pipe (73) is provided with a third heat supply valve (731).

Description

Heat exchange device for shallow geothermal exchange system Technical Field The invention relates to the technical field of geothermal heat exchange, in particular to a heat exchange device used in a shallow geothermal heat exchange system. Background The geothermal exchange system is a core link of geothermal utilization, and is characterized in that heat exchange is carried out between an underground heat exchange device and a rock-soil body, underground water or surface water, and heat pump and other equipment are matched to realize heating, refrigeration and hot water supply of a building, the background technology covers the aspects of development process, working principle, system type, key technology, existing challenges and the like, wherein the shallow geothermal exchange system is one of technical forms of development and utilization of the geothermal exchange system, in particular to a system for realizing heating, refrigeration and domestic hot water supply of the building by utilizing low-level heat energy of the shallow rock-soil body, the underground water and the surface water below the ground surface by 200m and at the temperature of 10-25 ℃ generally through combination of the heat exchange device and a heat pump unit. The heat exchange device in the existing shallow geothermal heat exchange system generally absorbs shallow geothermal heat through a buried pipe, the temperature and the heat source quality are improved through compression of a compressor, heat exchange is conducted between the shallow geothermal heat exchange device and equipment such as ground heating, the temperature of a ground heating working medium is raised to a level required by heating, but the heating mode of the heat exchange device is single, heat can be generally supplied to the equipment such as ground heating, the requirements of hot water supply in winter cannot be met, an occupant still needs to conduct work such as water heating through other heating equipment, the temperature of part of shallow rock and soil is lower, the temperature difference between the part of shallow geothermal heat exchange device and backwater of the heat exchange device is smaller, the heat exchange efficiency of the buried pipe is lower, and the geothermal heat exchange application capacity is limited. Disclosure of Invention The invention aims to solve the technical problem of providing a heat exchange device for a shallow geothermal exchange system, which is provided with a preheater, wherein return water is used for preheating ground buried pipe water supply, so that the working pressure of a compressor is reduced, the temperature of the return water is reduced, the heat exchange capacity of the ground buried pipe is improved, and a hot water supply module, a heating module and a hot air module are arranged for carrying out graded heat exchange and multi-form heating. In order to solve the technical problems, the technical scheme provided by the invention is as follows: The heat exchange device for the shallow geothermal exchange system comprises a heat exchanger, wherein a heating chamber, a heating chamber and a hot air chamber are arranged in the heat exchanger, and a preheating chamber is arranged on one side of the heat exchanger: the heating chamber is internally provided with a hot water supply module, the heating chamber is internally provided with a heating module, the hot air chamber is internally provided with a hot air module, the preheating chamber is internally provided with a preheating module, and the top of the heat exchanger is provided with an adjusting heating module; The hot water supply module, the heating module, the hot air module and the preheating module are respectively connected through the heat supply adjusting module. Further, the hot water supply module comprises a heating heat exchanger and a heat preservation water tank, the heating heat exchanger is arranged above the heat preservation water tank, the top is connected with the adjusting heat supply module, the bottom is connected with the top of the heat preservation water tank through a connecting pipe, a water supply pipe is arranged on one side of the heating heat exchanger, a hot water pipe is arranged on one side of the heat preservation water tank, and cold water enters the heat preservation water tank through the connecting pipe for preservation after being sent into the heating heat exchanger through the water supply pipe for heat exchange and is discharged through the hot water pipe. Further, one end of the first heat supply pipe is connected with the heat mass input end of the heating heat exchanger, the other end of the first heat supply pipe is connected with the output end of the compressor, and the heat mass output end of the heating heat exchanger is connected with the second heat supply pipe. Further, a first-stage bypass pipe is arranged between the first heat supply pipe and the second heat supply pipe, a first heat supply val