Multi-layer detachable hot water unit
The design of the multi-level detachable hot water unit solves the problems of bulky and difficult maintenance of large heat pump equipment, realizes convenient disassembly and assembly and efficient maintenance, adapts to different water temperature requirements, and reduces costs and resource consumption.
Patent Information
- Application Number
- CN202520443572.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-13
AI Technical Summary
Existing single large heat pump equipment is bulky and difficult to adapt to different water temperature requirements. It is difficult and costly to maintain. Modular equipment occupies a large area or is difficult to dismantle, and cannot efficiently cope with the volume of after-sales service.
Design a multi-stage detachable hot water unit, including an inlet main pipe, an outlet main pipe, a refrigerant main pipe, and at least two heat pump units. Multi-stage heating is achieved through series and parallel switching. A three-way valve and a stop valve are installed for easy disassembly and assembly, optimizing operating conditions and expanding the application range.
It has enabled the miniaturization and standardization of the unit's production, facilitated disassembly and maintenance, reduced the consumption of manpower and material resources, broadened the application range, and reduced the impact of maintenance.
Smart Images
Figure CN223855868U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of heat pump heating, specifically relates to a multilevel detachable hot water unit. BACKGROUND
[0002] The existing single large heat pump equipment is heavy, because the connection mode is fixed, not only the work efficiency is difficult to improve, but also the different water temperature demand of use place is difficult to deal with, when needing low water temperature and large flow water production, the flow is limited due to the structure, and the water temperature cannot be further reduced, when needing high water temperature, the water temperature is also difficult to reach higher temperature due to insufficient level.
[0003] At the same time, the application quantity of heat pump unit increases day by day, and the increasing after-sales service quantity is more and more, the heat pump application working condition complexity and operation time are much higher than air conditioning, therefore, convenient maintenance is very important for heat pump unit. Especially at present, most of the units need on-site maintenance, especially when the refrigeration system fails, the maintenance process is more and more complicated. And limited by the machine room space, the maintenance operation is difficult, not only affects the normal operation of the business place, but also limited to on-site maintenance, the cost of manpower and material resources is high, increases the burden of enterprises, and forms not small resistance in the process of product scale batch production.
[0004] On the other hand, the ordinary module concept adopted in the market at present is only a simple equipment quantity stacking in essence, which cannot improve the above problems. Although the module disperses the fault point, when the single module machine is small, multiple module units are needed, the land occupation area is large, and the project cost is high. If the single module unit is large, when the unit is removed, the project load is greatly affected, and the unit is difficult to move, remove or install, the transportation cost and other problems exist.
[0005] Therefore, on the basis of improving the performance of the unit, while realizing the batch production, and coping with the increasing after-sales service quantity through the effective convenient disassembly and assembly maintenance structure, adapting to the requirements of production, maintenance and after-sales in the new period, is the purpose to be reached. UTILITY MODEL CONTENTS
[0006] In order to solve the above problems, that is, to propose a convenient disassembly and assembly maintenance structure to cope with the increasing after-sales service quantity, and to adapt to the requirements of production, maintenance and after-sales in the new period of heat pump system, the utility model provides a multilevel detachable hot water unit, which comprises a water inlet main pipe, a water outlet main pipe, a refrigerant total inlet pipe, a refrigerant total outlet pipe and at least two heat pump units, a plurality of heat pump units are connected in series and parallel, and the water inlet end, the water outlet end, the heat exchange input end and the heat exchange output end of the heat pump unit are communicated with the water inlet main pipe, the water outlet main pipe, the refrigerant total inlet pipe and the refrigerant total outlet pipe respectively.
[0007] The further setting of the utility model discloses: the heat pump unit includes the evaporator, the low pressure fluorine export of evaporator is connected with the low pressure import of liquid storage gas, the low pressure export of liquid storage gas is connected with the compressor, still include the condenser, the condenser includes the supercooling section, saturation section and overheating section, the export of compressor with the inlet of overheating section is connected, the export of overheating section with the inlet of saturation section is connected, the export of saturation section with the high pressure inlet of liquid storage gas is connected, the high pressure export of liquid storage gas with the inlet of overheating section is connected, the export of overheating section is connected with expansion valve, the export of expansion valve with the inlet of evaporator is connected, the cooling import and cooling export of evaporator are connected with the total import pipe of cooling agent and the total export pipe of cooling agent respectively.
[0008] The further setting of the utility model discloses: the water inlet pipe is connected to the water inlet of multiple supercooling sections simultaneously, the water outlet of multiple supercooling sections is gathered into a total pipe, and is connected to the water inlet of multiple saturation sections simultaneously, the water outlet of multiple saturation sections is also gathered into a total pipe, and is connected to the water inlet of multiple overheating sections simultaneously, the water outlet of multiple overheating sections is also gathered into a total pipe, and is connected to the water outlet total pipe.
[0009] The further setting of the utility model discloses: the pipeline that is connected to the water inlet of multiple saturation sections installs three-way valve one, and the pipeline that gathers the water outlet of multiple saturation sections installs three-way valve two, and three-way valve one and three-way valve two are connected.
[0010] The further setting of the utility model discloses: the water inlet and water outlet of supercooling section, saturation section and overheating section are installed with water stop valve, and the cooling agent inlet and cooling agent outlet of evaporator are also installed with water stop valve.
[0011] The further setting of the utility model discloses: the water temperature regulating valve is installed on the water outlet total pipe.
[0012] The utility model discloses the beneficial effect is:
[0013] 1, through the setting of multilayer, can carry out segmentation to heating process, and each level is reasonably distributed, and optimization unit operating condition, is favorable to improve water production and reduce resistance. Meanwhile unit can realize parallel connection low temperature large flow water demand, also can realize series connection high temperature water production demand, and the setting of multilayer just provides premise for series connection and parallel connection, is favorable to realize series connection and parallel connection change in unit, change processing level, thereby widen application operating condition interval, and unit contains multiple same small units, and the same model degree is greatly strengthened, is favorable to the implementation of miniaturization and standardization, thereby creates favorable conditions for realizing batch production.
[0014] 2. The multiple basic units contained in the unit can be disassembled and assembled independently. If necessary, the faulty heat pump unit can be directly replaced, which greatly reduces the requirements for human resources and material consumption. The fluctuation of the entire system after an individual failure is significantly reduced, and other heat pump units can still operate normally to meet water needs, reducing the difficulty of after-sales service and the impact on the unit during maintenance. Attached Figure Description
[0015] Figure 1 A schematic diagram of the structure of this utility model is shown.
[0016] Figure 2 A schematic diagram of the heat pump unit is shown.
[0017] Figure 3 A magnified view of a portion at point A is shown.
[0018] Figure 4 A state reference diagram is shown for the parallel state of the saturated segment.
[0019] Figure 5 A state reference diagram is shown under the saturated segment series state.
[0020] Reference numerals in the attached diagram: 1. Heat pump unit; 11. Evaporator; 12. Liquid storage gas separator; 13. Compressor; 14. Condenser; 141. Subcooling section; 142. Saturated section; 143. Superheating section; 2. Main inlet water pipe; 3. Main outlet water pipe; 31. Water temperature regulating valve; 4. Main refrigerant inlet pipe; 5. Main refrigerant outlet pipe; 6. Three-way valve one; 7. Three-way valve two; 8. Stop valve. Detailed Implementation
[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0022] This utility model proposes a multi-level detachable hot water unit, including an inlet main pipe 2, an outlet main pipe 3, a refrigerant main inlet pipe 4, a refrigerant main outlet pipe 5, and four heat pump units 1. The inlet main pipe 2 is used to supply cold water, the outlet main pipe 3 is used to output water after heat exchange, and the refrigerant main inlet pipe 4 and the refrigerant main outlet pipe 5 are used to circulate the refrigerant.
[0023] The heat pump unit 1 includes an independent refrigerant system, water system, and electrical terminals. Each heat pump unit 1 can implement complete heat pump heating and cooling functions under the drive of the main electrical control box.
[0024] Any two heat pump units 1 form a group, and the two heat pump units 1 in the group are arranged in series and parallel switching mode, and the water inlet end, water outlet end, heat exchange input end and heat exchange output end of the heat pump unit 1 are respectively communicated with the water inlet main pipe 2, water outlet main pipe 3, refrigerant total inlet pipe 4 and refrigerant total outlet pipe 5.
[0025] The heat pump unit 1 comprises an evaporator 11, and the low-pressure fluorine outlet of the evaporator 11 is communicated with a liquid-gas separator 12, which is composed of a liquid reservoir and a gas-liquid separator, wherein the liquid reservoir is a high-pressure part, and the gas-liquid separator is a low-pressure part. The low-pressure fluorine outlet of the evaporator 11 is communicated with the low-pressure inlet of the liquid-gas separator 12, and the low-pressure outlet of the liquid-gas separator 12 is communicated with a compressor 13. The heat pump unit 1 further comprises a condenser 14, which comprises an overcooling section 141, a saturation section 142 and a superheating section 143. The outlet of the compressor 13 is communicated with the inlet of the superheating section 143, the outlet of the superheating section 143 is communicated with the inlet of the saturation section 142, the outlet of the saturation section 142 is communicated with the high-pressure inlet of the liquid-gas separator 12, the high-pressure outlet of the liquid-gas separator 12 is communicated with the inlet of the superheating section 143, the outlet of the superheating section 143 is communicated with an expansion valve, and the outlet of the expansion valve is communicated with the inlet of the evaporator 11, so as to realize the circulation of the refrigerant in the heat pump unit 1. The refrigerant inlet and refrigerant outlet of the two evaporators 11 are respectively communicated with the refrigerant total inlet pipe 4 and refrigerant total outlet pipe 5, specifically, the two refrigerant inlets are commonly communicated to one refrigerant total inlet pipe 4, and the two refrigerant outlets are commonly communicated to one refrigerant total outlet pipe 5. In this way, the refrigerant circulates in the evaporator 11 to absorb the heat from the heat source circulated by the pipeline.
[0026] The working mode of the heat pump unit 1 is the same as the principle of the existing heat pump, that is, after the refrigerant evaporates, it is input into the low-pressure part of the liquid-gas separator 12 from the evaporator 11, and then the gas-state refrigerant enters the compressor 13 after gas-liquid separation. The high-temperature and high-pressure gas-state refrigerant after compression passes through the superheating section 143 and the saturation section 142 in turn, and becomes high-pressure liquid-state refrigerant. The high-pressure liquid-state refrigerant is input into the high-pressure part of the liquid-gas separator 12, and then is throttled in the expansion valve. The throttled refrigerant is transported back to the evaporator 11 to be circulated and heat-absorbed again.
[0027] The water inlet main pipe 2 is simultaneously communicated to the water inlets of the two overcooling sections 141, the water outlets of the two overcooling sections 141 are combined into one main pipe, and are simultaneously communicated to the water inlets of the two saturation sections 142, the two water outlets of the two saturation sections 142 are also combined into one main pipe, and are simultaneously communicated to the water inlets of the two superheating sections 143, and the two water outlets of the two superheating sections 143 are also combined into one main pipe, and are communicated to the water outlet main pipe 3.
[0028] A three-way valve one 6 is installed on a pipeline connecting the water inlets of the two saturated sections 142, a three-way valve two 7 is installed on a pipeline connecting the water outlets of the two saturated sections 142, the three-way valve one 6 and the three-way valve two 7 are also connected, and the three-way valve one 6 and the three-way valve two 7 are both electric valves.
[0029] A water stop valve 8 is installed on the water inlets and outlets of the supercooling section 141, the saturated section 142 and the superheating section 143, and a water stop valve 8 is also installed on the refrigerant inlet and outlet of the evaporator 11, and the water stop valve 8 is an automatic water stop valve 8.
[0030] A water temperature adjusting valve 31 is installed on the water outlet main pipeline 3 to adjust the water temperature of the output hot water.
[0031] The two groups of heat pump units 1 are also connected in parallel with each other and share one water inlet main pipeline 2, one water outlet main pipeline 3, one refrigerant inlet main pipeline 4 and one refrigerant outlet main pipeline 5.
[0032] It should be noted that only two groups of heat pump units 1 are taken as examples in the present application, and the number thereof can be appropriately increased or decreased according to actual use requirements, and the number of heat pump units 1 in each group is also the same.
[0033] Reference Figure 4 When working in the low-temperature large-flow mode, the implementation process is as follows: all the water stop valves 8 are opened, the channel connecting the three-way valve one 6 and the three-way valve two 7 is closed, the two saturated sections 142 in one group of heat pump units 1 are connected in parallel, the cold water passes through the two saturated sections 142 respectively, then recombines at the outlet of the saturated section 142, and then enters the superheating section 143 for final heating, the water after the final heating is collected to the water temperature adjusting valve 31, is adjusted in temperature by the water temperature adjusting valve 31, reaches the appropriate water temperature, and is then output by the water outlet main pipeline 3.
[0034] Reference Figure 5 When working in the high-temperature water outlet mode, the implementation process is as follows: all the water stop valves 8 are opened, the channel connecting the three-way valve one 6 and the three-way valve two 7 is opened, the other input end of the three-way valve one 6 is closed, and the other output end of the three-way valve two 7 is closed. The two saturated sections 142 in one group of heat pump units 1 are connected in series, the cold water passes through the two saturated sections 142 once, then enters the superheating section 143 for final heating, the water after the final heating is collected to the water temperature adjusting valve 31, is adjusted in temperature by the water temperature adjusting valve 31, reaches the appropriate water temperature, and is then output by the water outlet main pipeline 3.
[0035] When maintenance is performed by disassembling a heat pump unit 1, the implementation process is: all stop valves 8 on the heat pump unit 1 to be disassembled are closed, so that the heat pump unit 1 can be directly disconnected from water, that is, the operation is disconnected, at this time, another heat pump unit 1 in the same group of heat pump units 1 can work independently, and the other group of heat pump units 1 can still be switched in series and parallel, thereby realizing that after disassembling any basic heat pump unit 1, other heat pump units 1 can still operate normally, which is more conducive to maintenance.
[0036] In summary, the multi-level setting can segment the heating process, reasonably allocate each level, optimize the unit working condition, and improve water production and reduce resistance. At the same time, the unit can realize parallel low-temperature large-flow water demand and series high-temperature water production demand, and the multi-level setting provides a premise for series and parallel connection, which is conducive to realizing series and parallel changes in the unit, changing the processing level, thereby widening the application working condition interval, the unit contains multiple small units of the same type, and the degree of the same type is greatly strengthened, which is conducive to the implementation of miniaturization and standardization, thereby creating favorable conditions for batch production. The multiple basic units contained in the unit can be independently disassembled, and if necessary, the problem heat pump unit 1 can be directly replaced, which greatly reduces the requirement for human resources and material consumption, significantly reduces the fluctuation of the entire system after individual failure, and other heat pump units 1 can still operate normally to meet the water demand, thereby reducing the difficulty of after-sales and the impact on the unit during maintenance.
[0037] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model, and in particular, the technical features mentioned in each embodiment can be combined in any way without structural conflicts. The utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.
[0038] In the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0039] In addition, it needs to be explained that, in the description of the utility model, unless another explicit provision and limitation, the term "mount", "link", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected; can be mechanical connection, also can be electrical connection; can be directly connected, also can pass through the indirect connection of intermediate medium, can be two element internal communication. For the person skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0040] The term "comprising" or any other similar word is intended to encompass a non-exclusive inclusion, so that a process, article, or apparatus / device including a series of elements includes not only those elements, but also other elements not explicitly listed, or inherent to such process, article, or apparatus / device.
[0041] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but the person skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, the person skilled in the art can make equivalent changes or replacements to the related technical features, and the technical schemes after these changes or replacements will fall within the protection scope of the utility model.
Claims
1. A multi-stage detachable hot water unit, characterized in that: The system comprises a water inlet main pipe (2), a water outlet main pipe (3), a refrigerant inlet main pipe (4), a refrigerant outlet main pipe (5) and at least two heat pump units (1), the water inlet end, the water outlet end, the heat exchange input end and the heat exchange output end of the heat pump units (1) are communicated with the water inlet main pipe (2), the water outlet main pipe (3), the refrigerant inlet main pipe (4) and the refrigerant outlet main pipe (5) respectively.
2. The multi-stage, split hydronic chiller unit of claim 1, wherein: The heat pump unit (1) comprises an evaporator (11), the low-pressure outlet of the evaporator (11) is communicated with the low-pressure inlet of a liquid storage and gas distribution device (12), the low-pressure outlet of the liquid storage and gas distribution device (12) is communicated with a compressor (13), and further comprises a condenser (14) comprising an overcooling section (141), a saturation section (142) and a superheating section (143), the outlet of the compressor (13) is communicated with the inlet of the superheating section (143), the outlet of the superheating section (143) is communicated with the inlet of the saturation section (142), the outlet of the saturation section (142) is communicated with the high-pressure inlet of the liquid storage and gas distribution device (12), the high-pressure outlet of the liquid storage and gas distribution device (12) is communicated with the inlet of the superheating section (143), the outlet of the superheating section (143) is communicated with an expansion valve, and the outlet of the expansion valve is communicated with the inlet of the evaporator (11); the refrigerant inlet and the refrigerant outlet of the evaporator (11) are communicated with the refrigerant inlet main pipe (4) and the refrigerant outlet main pipe (5) respectively.
3. The multi-stage, split hydronic chiller unit of claim 2, wherein: The water inlet main pipe (2) is simultaneously communicated with the water inlets of a plurality of overcooling sections (141), the water outlets of the plurality of overcooling sections (141) are gathered into one main pipe, the water inlets of a plurality of saturation sections (142) are simultaneously communicated, the water outlets of the plurality of saturation sections (142) are also gathered into one main pipe, the water inlets of a plurality of superheating sections (143) are simultaneously communicated, the water outlets of the plurality of superheating sections (143) are also gathered into one main pipe, and the main pipe is communicated with the water outlet main pipe (3).
4. The multi-stage, split hydronic chiller unit of claim 3, wherein: A three-way valve one (6) is installed on a pipeline communicated with the water inlets of the plurality of saturation sections (142), a three-way valve two (7) is installed on a pipeline gathering the water outlets of the plurality of saturation sections (142), and the three-way valve one (6) and the three-way valve two (7) are communicated.
5. The multi-stage, split hydronic chiller unit of claim 4, wherein: Water stop valves (8) are installed on the water inlets and the water outlets of the overcooling sections (141), the saturation sections (142) and the superheating sections (143), and the refrigerant inlets and the refrigerant outlets of the evaporator (11) are also installed with water stop valves (8).
6. The multi-stage, split, water heater assembly of any of claims 1-4, wherein: A water temperature adjusting valve (31) is installed on the water outlet main pipe (3).