CN219283686U - Soil self-cooling/heating system - Google Patents
Soil self-cooling/heating system Download PDFInfo
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- CN219283686U CN219283686U CN202320594778.4U CN202320594778U CN219283686U CN 219283686 U CN219283686 U CN 219283686U CN 202320594778 U CN202320594778 U CN 202320594778U CN 219283686 U CN219283686 U CN 219283686U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a soil self-cooling/heating system, which relates to the technical field of soil restoration and solves the technical problems that in the prior art, annual average cold and hot loads in north-south areas are unbalanced, the underground buried pipes of a soil source heat pump can not take and release heat from underground soil all the year round, the soil temperature gradually deviates from the initial temperature when the underground buried pipes are used as ideal cold and heat sources, so that the soil heat imbalance problem is caused, and the normal operation of the soil source heat pump system is influenced; the heat pump type heat pump unit comprises an outdoor fin tube set, a cold/hot circulating unit, a plate heat exchanger and a buried tube set, wherein the outdoor fin tube set is communicated with the cold/hot circulating unit through a first circulating pipeline to form a closed loop, the cold/hot circulating unit is communicated with the plate heat exchanger through a second circulating pipeline to form a closed loop, and the plate heat exchanger is communicated with the buried tube set through a third circulating pipeline to form a closed loop; the utility model can balance the cold and hot load of the soil and meet the requirements of soil cold or heat supply in different areas.
Description
Technical Field
The utility model relates to the technical field of soil remediation, in particular to a soil self-cooling/heating system.
Background
With the emphasis on clean energy technology, renewable ground source heat pumps that use solar energy stored in soil as a cold and heat source to perform energy conversion are widely used, and renewable ground source heat pump systems are devices that utilize the characteristic that the soil temperature is relatively stable at normal temperature underground, and perform heat exchange with the inside of a building through a pipeline system buried in the surroundings of the building. And in summer, indoor waste heat is taken out to realize air conditioning, and meanwhile, heat is discharged to underground for storage for winter. And in winter, the heat stored in summer is taken out from the underground to realize heating and then store cold energy for summer use, so that the energy source can be recycled and efficiently utilized.
The applicant found that the prior art has at least the following technical problems:
because the climate zones in the south and the north of China are different, the refrigerating load in summer in the south area is far greater than the heating load in winter, and the heating load in winter in the north is far greater than the refrigerating load in summer, namely the heat release in summer of the soil in the south is far greater than the heat release in winter, and the heat release in winter of the soil in the north is far greater than the heat release in summer. In the past, the annual average cold and hot load imbalance in the north-south areas is caused, the heat extraction and release amount of underground soil is inconsistent all the year round, cold/heat accumulation is formed, the soil temperature deviates from the initial temperature gradually serving as an ideal cold and heat source, the trend of rising or reducing year by year is presented, the problem of soil heat imbalance is caused, and the normal operation of a renewable ground source heat pump system is influenced.
In view of this, the present utility model has been made.
Disclosure of Invention
The utility model aims to provide a soil self-cooling/heating system, which solves the technical problems that in the prior art, annual average cold and hot loads in north-south areas are unbalanced, the heat extraction and release amount of a heat pump system to underground soil is inconsistent all the year round, the soil temperature gradually deviates from the initial temperature when the soil temperature is used as an ideal cold and heat source, so that the soil heat is unbalanced, and the normal operation of a soil source heat pump system is influenced. The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a soil self-cooling/heating system, which comprises an outdoor fin tube set, a cold/heat circulation unit, a plate heat exchanger and a ground buried tube set, wherein the outdoor fin tube set is communicated with the cold/heat circulation unit through a first circulation pipeline to form a closed loop, the cold/heat circulation unit is communicated with the plate heat exchanger through a second circulation pipeline to form a closed loop, and the plate heat exchanger is communicated with the ground buried tube set through a third circulation pipeline to form a closed loop.
Preferably, the cold/hot circulating unit comprises a condenser, an expansion valve, an evaporator and a compressor which are communicated with each other through a fourth circulating pipeline in turn along the circulating direction to form a closed loop, wherein the outdoor fin tube group is communicated with the condenser through a first circulating pipeline to form a closed loop, and the evaporator is communicated with the plate heat exchanger through a second circulating pipeline to form a closed loop;
preferably, the cold/hot circulating unit comprises an evaporator, an expansion valve, a condenser and a compressor which are communicated with each other through a fourth circulating pipeline in sequence along the circulating direction to form a closed loop, wherein the outdoor fin tube group is communicated with the evaporator through a first circulating pipeline to form a closed loop, and the condenser is communicated with the plate heat exchanger through a second circulating pipeline to form a closed loop;
preferably, the buried pipe group comprises a plurality of buried pipes which are arranged in parallel;
preferably, the outdoor fin group includes a plurality of spiral fins arranged in parallel;
preferably, the inlet end of the condenser is respectively communicated with the outlet end of the compressor and the inlet end of the outdoor fin tube group through a first three-way valve, and the outlet end of the condenser is respectively communicated with the inlet end of the expansion valve and the outlet end of the outdoor fin tube group through a second three-way valve;
preferably, the inlet end of the evaporator is respectively communicated with the outlet end of the compressor and the inlet end of the outdoor fin tube group through a third three-way valve, and the outlet end of the evaporator is respectively communicated with the inlet end of the expansion valve and the outlet end of the outdoor fin tube group through a fourth three-way valve;
preferably, the third circulation pipeline is provided with a circulation pump.
The preferred technical scheme of the utility model can at least have the following technical effects:
the utility model effectively solves the technical problems that the annual average cold and hot load in the north-south areas is unbalanced, the heat pump system can not consistently take and release heat from underground soil all the year round, and the soil temperature gradually deviates from the initial temperature when the heat pump system is used as an ideal cold and heat source, so that the soil heat is unbalanced. According to the utility model, through the outdoor fin tube group, the cold/hot circulating unit, the plate heat exchanger and the buried tube group, in the south area with the heat release amount far larger than the heat release amount, the cold/hot circulating unit realizes refrigeration circulation, reduces the soil temperature and supplements the soil cold amount. In northern areas with far greater heat extraction quantity than heat release quantity, the cold/hot circulating unit realizes heating circulation, improves soil temperature, compensates soil heat, effectively adjusts the heat unbalance problem caused by the use of the renewable ground source heat pump system, ensures the normal and stable operation of the ground source heat pump system, and meets the soil cold quantity or heat supply requirements of different areas.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a soil source heat pump system suitable for northern areas according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a soil source heat pump system suitable for a southern area according to an embodiment of the present utility model.
In the figure:
1-outdoor fin tube groups; 2-cold/hot circulating unit; 21-a condenser; a 22-expansion valve; a 23-evaporator; 25-compressors; 3-plate heat exchanger; 4-burying a pipe group; 41-buried pipeline; 5-a first circulation line; 6-a second circulation line; 7-a third circulation line; 71-a circulation pump; 8-a fourth circulation line; 81-a first three-way valve; 82-a second three-way valve; 83-a third three-way valve; 84-fourth three-way valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.
In the description of the present utility model, it should be understood that the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1:
as shown in fig. 1, the utility model provides a soil source heat pump system suitable for a southern area, which comprises an outdoor fin tube group, a cold/hot circulation unit, a plate heat exchanger and a buried tube group, wherein the outdoor fin tube group is communicated with the cold/hot circulation unit through a first circulation pipeline to form a closed loop, the cold/hot circulation unit is communicated with the plate heat exchanger through a second circulation pipeline to form a closed loop, and the plate heat exchanger is communicated with the buried tube group through a third circulation pipeline to form a closed loop.
As an alternative embodiment, the cold/hot cycle unit includes a condenser, an expansion valve, an evaporator and a compressor which are sequentially communicated with each other through a fourth circulation pipeline along a circulation direction to form a closed loop, the outdoor fin group is communicated with the condenser through a first circulation pipeline to form a closed loop, and the evaporator is communicated with the plate heat exchanger through a second circulation pipeline to form a closed loop. The expansion valve is used for controlling and adjusting the flow in the fourth circulation pipeline.
As an alternative implementation mode, the buried pipe group comprises a plurality of buried pipes which are arranged in parallel, and the buried pipes are distributed at the position of soil cold-hot load imbalance according to requirements, so that the problem of soil heat imbalance is effectively solved.
As an alternative embodiment, the outdoor fin tube group includes a plurality of spiral fins arranged in parallel, so that the flow contact area between the heat exchange medium and the outdoor fin tube group is increased, the heat exchange time is prolonged, and the heat exchange efficiency is improved.
As an alternative embodiment, the inlet end of the condenser is respectively communicated with the outlet end of the compressor and the inlet end of the outdoor fin tube set through a first three-way valve, and the outlet end of the condenser is respectively communicated with the inlet end of the expansion valve and the outlet end of the outdoor fin tube set through a second three-way valve.
As an alternative embodiment, the third circulation pipeline is provided with a circulation pump.
As an alternative embodiment, the device further comprises a controller, and the first three-way valve, the second three-way valve and the circulating pump are respectively and electrically connected with the controller.
As an alternative implementation mode, PE100 materials are selected as materials of the first circulation pipeline, the second circulation pipeline, the third circulation pipeline and the fourth circulation pipeline, the circulation cross section is large, the circulation flux is large, the tolerance strength is high, the external damage resistance performance is good, the installation speed is high, and the cost is low.
The working principle of the embodiment is as follows:
the outdoor finned tube absorbs the cold energy of ambient air, the cold energy is transferred to the condenser through the first circulating pipeline and is condensed into liquid state in the condenser, the liquid cold energy is conveyed to the evaporator for evaporation through the fourth circulating pipeline by the compressor, refrigeration circulation is achieved, the cold energy is transferred to the plate heat exchanger through the second circulating pipeline, heat exchange is conducted by the plate heat exchanger, the cold energy is transferred to the ground buried tube group through the third circulating pipeline, the soil temperature is reduced, the heat taking and releasing quantity of the south area is effectively adjusted to be far greater than that of the south area, the heat unbalance problem is caused, and the soil heat taking and releasing quantity balance of the south area is maintained.
Example 2:
as shown in fig. 2, the utility model provides a soil source heat pump system suitable for northern areas, which comprises an outdoor fin tube set, a cold/hot circulation unit, a plate heat exchanger and a buried tube set, wherein the outdoor fin tube set is communicated with the cold/hot circulation unit through a first circulation pipeline to form a closed loop, the cold/hot circulation unit is communicated with the plate heat exchanger through a second circulation pipeline to form a closed loop, and the plate heat exchanger is communicated with the buried tube set through a third circulation pipeline to form a closed loop.
As an alternative embodiment, the cold/hot cycle unit includes an evaporator, an expansion valve, a condenser and a compressor which are sequentially communicated with each other through a fourth circulation pipeline along a circulation direction to form a closed loop, the outdoor fin tube set is communicated with the evaporator through a first circulation pipeline to form a closed loop, and the condenser is communicated with the plate heat exchanger through a second circulation pipeline to form a closed loop. The expansion valve is used for controlling and adjusting the flow in the fourth circulation pipeline.
As an alternative embodiment, the inlet end of the evaporator is respectively communicated with the outlet end of the compressor and the inlet end of the outdoor fin tube set through a third three-way valve, and the outlet end of the evaporator is respectively communicated with the inlet end of the expansion valve and the outlet end of the outdoor fin tube set through a fourth three-way valve.
As an alternative embodiment, the buried pipe set comprises several buried pipes arranged in parallel.
As an alternative embodiment, the outdoor fin group includes a plurality of spiral fins arranged side by side.
As an alternative embodiment, the third circulation pipeline is provided with a circulation pump.
The working principle of the embodiment is as follows:
the outdoor finned tube absorbs heat of ambient air, and transfers the heat to the evaporator through the first circulating pipeline, the compressor conveys compressed high-temperature high-pressure steam to the condenser through the fourth circulating pipeline, liquefaction releases heat, heating circulation is achieved, heat released by the condenser is transferred to the plate heat exchanger through the second circulating pipeline, the plate heat exchanger performs heat exchange, heat is transferred to the ground buried tube group through the third circulating pipeline, soil temperature is compensated, heat extraction in northern areas is effectively adjusted to be far greater than heat extraction to cause heat unbalance, and balance of heat extraction and release in soil in northern areas is maintained.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (8)
1. The soil self-cooling/heating system is characterized by comprising an outdoor fin tube set, a cooling/heating cycle unit, a plate heat exchanger and a buried tube set, wherein the outdoor fin tube set is communicated with the cooling/heating cycle unit through a first circulation pipeline to form a closed loop, the cooling/heating cycle unit is communicated with the plate heat exchanger through a second circulation pipeline to form a closed loop, and the plate heat exchanger is communicated with the buried tube set through a third circulation pipeline to form the closed loop.
2. The soil self-cooling/heating system according to claim 1, wherein the cooling/heating cycle unit comprises a condenser, an expansion valve, an evaporator and a compressor which are communicated with each other through a fourth circulation pipeline in turn along a circulation direction to form a closed loop, the outdoor fin tube group is communicated with the condenser through a first circulation pipeline to form a closed loop, and the evaporator is communicated with the plate heat exchanger through a second circulation pipeline to form a closed loop.
3. The soil self-cooling/heating system according to claim 1, wherein the cooling/heating cycle unit comprises an evaporator, an expansion valve, a condenser and a compressor which are communicated with each other through a fourth circulation pipeline in turn along a circulation direction to form a closed loop, the outdoor fin tube group is communicated with the evaporator through a first circulation pipeline to form a closed loop, and the condenser is communicated with the plate heat exchanger through a second circulation pipeline to form a closed loop.
4. A soil self-cooling/heating system according to claim 2 or 3, wherein said buried pipe set comprises a plurality of buried pipes arranged in parallel.
5. A soil self-cooling/heating system according to claim 2 or 3, wherein said outdoor fin group comprises a plurality of spiral fins arranged in parallel.
6. The soil self-cooling/heating system according to claim 2, wherein the inlet end of the condenser is respectively communicated with the outlet end of the compressor and the inlet end of the outdoor fin tube set through a first three-way valve, and the outlet end of the condenser is respectively communicated with the inlet end of the expansion valve and the outlet end of the outdoor fin tube set through a second three-way valve.
7. A soil self-cooling/heating system according to claim 3, wherein the inlet end of the evaporator is respectively connected to the outlet end of the compressor and the inlet end of the outdoor fin tube set through a third three-way valve, and the outlet end of the evaporator is respectively connected to the inlet end of the expansion valve and the outlet end of the outdoor fin tube set through a fourth three-way valve.
8. The soil self-cooling/heating system according to claim 1, wherein the third circulation pipeline is provided with a circulation pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594778.4U CN219283686U (en) | 2023-03-23 | 2023-03-23 | Soil self-cooling/heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594778.4U CN219283686U (en) | 2023-03-23 | 2023-03-23 | Soil self-cooling/heating system |
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| Publication Number | Publication Date |
|---|---|
| CN219283686U true CN219283686U (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320594778.4U Active CN219283686U (en) | 2023-03-23 | 2023-03-23 | Soil self-cooling/heating system |
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| CN (1) | CN219283686U (en) |
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- 2023-03-23 CN CN202320594778.4U patent/CN219283686U/en active Active
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