Dual-system water-cooling cold water band heat pump unit in energy storage industry

Abstract

The utility model discloses a double-system water-cooling cold water band heat pump unit in the energy storage industry, and relates to the technical field of heat pump units, the double-system water-cooling cold water band heat pump unit comprises a condenser, an evaporator and a compressor, the condenser is composed of an air cooling mechanism and a liquid cooling mechanism and is used for rapidly cooling refrigerant steam, and the evaporator is used for refrigerating the refrigerant steam. A fan structure on the air cooling mechanism is installed through a convenient-to-disassemble structure, and disassembly and maintenance are convenient. According to the dual-system water-cooling cold water band heat pump unit in the energy storage industry, the two compressors are arranged, when one compressor breaks down, the other compressor can still maintain basic operation of the system, the situation that the whole system is shut down due to compressor faults is avoided, the reliability and stability of the unit in application of the energy storage industry are greatly improved, and the service life of the unit is prolonged. Continuous and stable operation of a related energy storage system is guaranteed, and the problems of energy storage efficiency reduction or energy storage interruption caused by equipment faults are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of heat pump units, specifically a dual-system water-cooled chilled water heat pump unit for the energy storage industry. Background Technology

[0002] As people's living standards continue to improve, they also have higher and higher requirements for their living environment. To maintain a comfortable ambient temperature, air conditioning equipment has become an indispensable part of people's lives. Specifically, most existing high-power air conditioning equipment uses heat pump units.

[0003] The utility model patent with authorization announcement number CN220524389U discloses a heat pump unit, including: a compressor, a first four-way valve, a condensing device, an air-cooled heat exchanger, and a first heat exchanger. It integrates a compressor with multiple heat exchange devices such as the condensing device, the air-cooled heat exchanger, and the first heat exchanger into a single integrated design.

[0004] As shown in the above utility model, the existing heat pump unit can realize multiple operating modes such as cooling and heating. However, this structure is equipped with a compressor, which cannot guarantee the continued operation of the system when it fails. Moreover, the heat exchange efficiency of the air-cooled heat exchange method is poor. The fan mechanism is installed with bolts, which makes it inconvenient to quickly disassemble and replace it when it fails. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a dual-system water-cooled chiller with heat pump unit for the energy storage industry, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-system water-cooled chiller with heat pump for the energy storage industry, comprising:

[0007] The condenser has a set of inlets and outlets connected to coolant inlet and outlet pipes, and a condenser external circulation pump is installed on the coolant inlet and outlet pipes for external circulation of coolant in the condenser. The condenser consists of an air-cooling mechanism and a liquid-cooling mechanism for rapid cooling of refrigerant vapor. The fan structure on the air-cooling mechanism is installed through a disassembly structure for easy disassembly and maintenance.

[0008] An evaporator, wherein a set of inlets and outlets of the evaporator are connected to evaporating liquid inlet and outlet pipes, and an external circulation pump for evaporating liquid is installed on the evaporating liquid inlet and outlet pipes for external circulation of evaporating liquid within the evaporator;

[0009] The compressor is provided in two parts. A four-way reversing valve is provided on one side of the compressor. An electronic expansion valve is connected between another set of inlets and outlets on the condenser and evaporator for flow control of heat exchange.

[0010] Preferably, the input and output ends of the compressor are connected to the first and fourth ends of a four-way reversing valve, respectively; the second end of the four-way reversing valve is connected to the condenser; and the third end of the four-way reversing valve is connected to the evaporator.

[0011] Preferably, the air-cooling mechanism includes an air-cooling cavity opened at the upper end of the condenser, a fan mechanism is provided on one side of the air-cooling cavity, and an installation groove is opened on the other side of the air-cooling cavity. A filter screen plate for filtering dust in the air is installed in the installation groove, and the edge of the filter screen plate is magnetically connected to the installation groove through a magnetic plate for quick disassembly and cleaning replacement.

[0012] Preferably, the air-cooled cavity is provided with a heat exchange tube with a bent structure. The heat exchange tube is connected to the refrigerant connecting pipe on the condenser. Multiple heat-conducting fins are connected at equal intervals on the outer side of the heat exchange tube. Multiple fins arranged in a ring array are installed on both sides of the heat-conducting fins for air-cooling heat dissipation.

[0013] Preferably, the fan mechanism includes a mounting bracket fixed to one side of the air-cooling cavity. The mounting bracket is configured as a ring frame structure for mounting the fan assembly. A protective cover is magnetically connected to the outer side of the opening of the mounting bracket to protect the fan assembly. Four sets of dovetail grooves distributed in a cross shape are provided on the inner wall of the periphery of the mounting bracket.

[0014] Preferably, the fan assembly includes a cross-shaped mounting plate, with a fan mounted on the center of one side of the mounting plate. Connecting pieces are fixed to all four sides of the mounting plate, and the connecting pieces are fitted against the inner wall of the mounting frame. A dovetail slider is fixed to the outer side of the connecting piece, and the dovetail slider is adapted to a dovetail groove to initially limit the position of the mounting plate. The center of the connecting piece is fixed to the mounting frame by bolts to further limit the position of the mounting plate.

[0015] Beneficial effects

[0016] This utility model provides a dual-system water-cooled chiller with heat pump unit for the energy storage industry. Compared with the prior art, it has the following advantages:

[0017] 1. This dual-system water-cooled chiller with heat pump unit for the energy storage industry is equipped with two compressors. When one compressor fails, the other compressor can still maintain the basic operation of the system, avoiding the shutdown of the entire system due to compressor failure. This greatly improves the reliability and stability of the unit in the energy storage industry, ensures the continuous and stable operation of the relevant energy storage system, and reduces problems such as reduced energy storage efficiency or energy storage interruption caused by equipment failure.

[0018] 2. This dual-system water-cooled chiller with heat pump unit for the energy storage industry features a condenser with a dual-mechanism design combining air cooling and liquid cooling. Compared to a simple air-cooled heat exchange method, this significantly improves heat exchange efficiency, enabling faster cooling of refrigerant vapor and enhancing the overall cooling or heating performance of the unit. Simultaneously, the fan structure on the air-cooled mechanism employs a design for easy disassembly. Initial positioning is achieved through dovetail sliders and dovetail grooves, followed by further securing with bolts. The protective cover is magnetically connected, and the filter screen is also magnetically connected to the mounting slot. This allows for convenient and quick disassembly, replacement, and maintenance when the fan mechanism or filter screen malfunctions or requires cleaning, reducing maintenance difficulty and time costs, and improving equipment availability and maintenance convenience. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the pipe connection structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the condenser structure of this utility model;

[0021] Figure 3 This is a side view of the condenser structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the air-cooled cavity structure of this utility model;

[0023] Figure 5 This is a schematic diagram showing the connection between the mounting bracket and the fan assembly structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the mounting bracket structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the fan assembly structure of this utility model.

[0026] In the diagram: condenser 1, condenser external circulation pump 11, air-cooled cavity 12, mounting slot 13, filter plate 14, evaporator 2, evaporator external circulation pump 21, compressor 3, four-way reversing valve 31, electronic expansion valve 32, mounting bracket 4, protective cover 41, dovetail slide 42, heat exchange tube 5, heat conduction plate 51, fin 52, fan assembly 6, mounting plate 61, fan 62, connecting piece 63, dovetail slider 64. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 This utility model provides two technical solutions:

[0029] The first implementation method: A dual-system water-cooled chilled water with heat pump unit for the energy storage industry includes a condenser 1, an evaporator 2 and a compressor 3. The condenser 1 is composed of an air-cooled mechanism and a liquid-cooled mechanism, which is used to quickly cool the refrigerant vapor. The fan 62 structure on the air-cooled mechanism is installed through a disassembly structure, which is convenient for disassembly and maintenance. The evaporator 2 and the compressor 3 are combined to form a heat pump mechanism.

[0030] Specifically, one set of inlet and outlet ports of condenser 1 is connected to coolant inlet and outlet pipes, and a condenser external circulation pump 11 is installed on the coolant inlet and outlet pipes for external circulation of coolant within condenser 1. One set of inlet and outlet ports of evaporator 2 is connected to evaporator inlet and outlet pipes, and an evaporator external circulation pump 21 is installed on the evaporator inlet and outlet pipes for external circulation of evaporator 2. Two compressors 3 are provided; a four-way reversing valve 31 is installed on one side of each compressor 3. An electronic expansion valve 32 connects the other set of inlet and outlet ports on condenser 1 and evaporator 2 for heat exchange flow. The compressor 3 is connected to the first and fourth ends of a four-way reversing valve 31, respectively, with the second end of the four-way reversing valve 31 connected to the condenser 1 and the third end of the four-way reversing valve 31 connected to the evaporator 2. A four-way reversing valve 31 and an electronic expansion valve 32 are installed at the connection points of the two compressors 3, forming two sets of circulation systems. When one compressor 3 fails, the other compressor 3 can still maintain the basic operation of the system, avoiding the shutdown of the entire system due to the failure of the compressor 3, which greatly improves the reliability and stability of the unit in the energy storage industry.

[0031] The output end of compressor 3 is connected to the fourth end of four-way reversing valve 31. The high-temperature and high-pressure refrigerant gas discharged from compressor 3 enters through the fourth end of four-way reversing valve 31, and then flows out from the second end into condenser 1. In condenser 1, heat is released and the gas is cooled into a high-pressure liquid. After passing through electronic expansion valve 32 for throttling and pressure reduction, the gas enters evaporator 2. In evaporator 2, the gas absorbs heat and vaporizes into low-pressure gas. Finally, the low-pressure gas enters through the third end of four-way reversing valve 31, flows out from the first end, and returns to the input end of compressor 3, completing the refrigeration cycle.

[0032] The output end of compressor 3 is still connected to the fourth end of four-way reversing valve 31. At this time, the high-temperature and high-pressure refrigerant gas discharged from compressor 3 enters through the fourth end of four-way reversing valve 31, flows out from the third end, and enters evaporator 2. Evaporator 2 is used as condenser at this time. The high-temperature and high-pressure refrigerant gas releases heat in evaporator 2 and cools into high-pressure liquid. After being throttled and depressurized by electronic expansion valve 32, it enters condenser 1. In condenser 1, it absorbs heat and vaporizes into low-pressure gas. The low-pressure gas enters through the second end of four-way reversing valve 31 and flows out from the first end, returning to the input end of compressor 3 to complete the heating cycle.

[0033] This unit incorporates a heat pump function. When the ambient temperature is low and the energy storage system needs heating, the heat pump mechanism can replace traditional electric heating. Since the heating efficiency of the heat pump is higher than that of electric heating, it can effectively reduce the energy consumption of the system when heating at low temperatures.

[0034] The second embodiment differs from the first embodiment in that: the air-cooling mechanism includes an air-cooling cavity 12 located at the top of the condenser 1. A fan 62 mechanism is provided on one side of the air-cooling cavity 12, and an installation groove 13 is provided on the other side of the air-cooling cavity 12. A filter screen 14 for filtering dust in the air is installed in the installation groove 13. The edge of the filter screen 14 is magnetically connected to the installation groove 13 via a magnetic plate for quick disassembly and replacement. A heat exchange tube 5 with multiple bent sections is provided in the air-cooling cavity 12. The heat exchange tube 5 is connected to the refrigerant connecting pipe on the condenser 1. Multiple heat-conducting fins 51 are connected at equal intervals on the outer side of the heat exchange tube 5. Multiple fins 52 arranged in a ring array are installed on both sides of the heat-conducting fins 51 for air-cooling heat dissipation. The arrangement of multiple heat-conducting fins 51 and fins 52 improves the air-cooling heat exchange effect of the heat exchange tube 5.

[0035] More specifically, the fan 62 mechanism includes a mounting bracket 4 fixed to one side of the air-cooling cavity 12. The mounting bracket 4 is configured as a ring frame structure for mounting the fan 62 assembly 6. A protective cover 41 is magnetically connected to the outer side of the opening of the mounting bracket 4. The protective cover 41 has multiple slots for ventilation, which protect the fan 62 assembly 6 and facilitate quick assembly and disassembly. Four sets of dovetail grooves 42 arranged in a cross shape are opened on the inner wall of the periphery of the mounting bracket 4. The fan 62 assembly 6 includes a cross-shaped mounting plate 61. The fan 62 is mounted on the middle of one side of the mounting plate 61. The fan 62 is used to draw outside air through the filter plate 14 into the air-cooling cavity 12. Inside, the contents are discharged through the mesh opening on the protective cover 41. Connecting pieces 63 are fixed on all four sides of the mounting plate 61. The connecting pieces 63 fit against the inner wall of the mounting frame 4, and dovetail sliders 64 are fixed on the outer side of the connecting pieces 63. The dovetail sliders 64 are adapted to the dovetail grooves 42 to initially limit the mounting plate 61 and stabilize the installation. The middle part of the connecting pieces 63 is fixed to the mounting frame 4 by bolts to further limit the mounting plate 61 and make the fan 62 installed stably. At the same time, the fan 62 can be disassembled and replaced by removing these screws (four screws are not required for the four connecting pieces 63; two or more screws can be installed as needed).

[0036] When this device is working, the external coolant is first circulated in the liquid-cooled chamber of the condenser box through the coolant inlet and outlet pipes and the external condenser circulation pump 11. The refrigerant is first cooled by air through the heat exchange tube 5. The fan 62 is started, and the fan 62 draws the outside air through the filter plate 14 into the air-cooled chamber 12, where it comes into contact with the heat-conducting fins 51 and fins 52 on the heat exchange tube 5, thus achieving the function of air cooling. The air after heat exchange is discharged through the ventilation slot on the protective cover 41. The refrigerant after air cooling is cooled by liquid cooling in the liquid-cooled chamber. The combination of air cooling and liquid cooling improves the working efficiency of this device.

[0037] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-system water-cooled cold water with heat pump unit for the energy storage industry, characterized in that, Include: Condenser, a group of inlet and outlet of condenser is communicated with cooling liquid inlet and outlet pipeline, and cooling liquid inlet and outlet pipeline is provided with condenser external circulation pump for external circulation of cooling liquid in condenser, condenser is composed of air cooling mechanism and liquid cooling mechanism for rapid cooling of refrigerant vapor, fan structure on air cooling mechanism is installed by detachable structure, which is convenient for disassembly and maintenance; Evaporator, a group of inlet and outlet of evaporator is communicated with evaporation liquid inlet and outlet pipeline, and evaporation liquid inlet and outlet pipeline is provided with evaporation external circulation pump for external circulation of evaporation liquid in evaporator; The compressor is provided with two, one side of the compressor is provided with four-way reversing valve, another group of inlet and outlet of condenser and evaporator is communicated with electronic expansion valve for flow control of heat exchange.

2. The dual-system water-cooled cold water with heat pump unit of claim 1, wherein: The input end and output end of the compressor are connected with the first end and fourth end of the four-way reversing valve respectively, the second end of the four-way reversing valve is connected with the condenser, and the third end of the four-way reversing valve is connected with the evaporator.

3. The dual-system water-cooled water-source heat pump unit of claim 1, wherein: The air cooling mechanism includes an air cooling cavity opened at the upper end of the condenser, a fan mechanism is arranged on one side of the air cooling cavity, an installation groove is opened on the other side of the air cooling cavity, a filter screen plate for filtering dust in air is installed in the installation groove, the edge of the filter screen plate is connected with the installation groove by magnetic attraction plate for quick disassembly and replacement.

4. The dual-system water-cooled water-source heat pump unit of claim 3, wherein: The air cooling cavity is provided with heat exchange pipes with multiple bending structures, the heat exchange pipes are connected with the refrigerant communication pipe connected with the condenser, multiple heat conducting fins are connected with the outer side of the heat exchange pipes at equal intervals, multiple fin arrays are arranged on both sides of the heat conducting fins for air cooling.

5. The dual-system water-cooled water-source heat pump unit of claim 3, wherein: The fan mechanism includes a mounting frame fixed on one side of the air cooling cavity, the mounting frame is arranged as a ring frame structure for mounting the fan assembly, a protective cover is connected with the opening outer side of the mounting frame by magnetic attraction for protection of the fan assembly, four cross-shaped dovetail sliding grooves are opened on the inner wall of the circumferential side of the mounting frame.

6. The dual-system water-cooled water-source heat pump unit of claim 5, wherein: The fan assembly includes a cross-shaped mounting plate, a fan is mounted on one side of the mounting plate, connecting plates are fixed on four edges of the mounting plate, the connecting plates are fitted with the inner wall of the mounting frame, dovetail sliding blocks are fixed on the outer side of the connecting plates, the dovetail sliding blocks are matched with the dovetail sliding grooves for preliminary positioning of the mounting plate, the connecting plates are further positioned by bolts and the mounting frame.

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