Water chilling unit, control method and storage medium

Abstract

The invention discloses a water chilling unit, a control method and a storage medium. The water chilling unit comprises an evaporator directly connected with a chilled water system and further comprises an ice storage device, a water outlet pipeline of the ice storage device is connected with a compressor, and a water inlet pipeline of the ice storage device is connected with a heating water tank. The first electronic expansion valve is arranged on a pipeline between the heating water tank and the ice storage device; and the second electronic expansion valve is arranged on a pipeline between the condenser and the evaporator. According to the water chilling unit structure and the control method thereof provided by the invention, cold water / hot water with independent temperatures can be provided by correspondingly switching the circulation loop of the refrigerant under different working conditions, the evaporator and the condenser, so that the water chilling unit runs in the optimal efficiency state under various working conditions, and the optimal efficiency requirements of various water temperature working conditions are met.

Description

Technical Field

[0001] The present invention relates to the technical field of water chillers, and in particular to a water chiller, a control method and a storage medium. Background Art

[0002] Conventional chillers are usually equipped with one evaporator and one condenser, and the evaporator and condenser are designed according to a standard operating condition. When the unit needs to meet various water temperature operating conditions (refrigeration, ice making, hot water making), the evaporator and condenser do not operate at the best efficiency under other operating conditions.

[0003] With regard to the problem in the prior art that the chiller cannot achieve efficient operation under various working conditions, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present invention provide a chiller, a control method and a storage medium to solve the problem in the prior art that the chiller cannot achieve efficient operation under various working conditions.

[0005] In order to solve the above technical problems, the present invention provides a chiller, wherein the chiller comprises: a compressor, a condenser, and an evaporator connected in sequence, wherein the evaporator is directly connected to a chilled water system, and further comprises:

[0006] An ice storage device, whose water outlet pipeline is connected to the compressor and whose water inlet pipeline is connected to the heating water tank;

[0007] A first electronic expansion valve is arranged on the pipeline between the heating water tank and the ice storage device;

[0008] A second electronic expansion valve is arranged on the pipeline between the condenser and the evaporator;

[0009] a first solenoid valve, arranged on a pipeline between the second electronic expansion valve and the evaporator;

[0010] a second solenoid valve, arranged on a pipeline between the first electronic expansion valve and the ice storage device;

[0011] a third solenoid valve, arranged on the first branch, wherein the starting point of the first branch is located on the pipeline between the second electronic expansion valve and the first solenoid valve, and the end point is located on the pipeline between the first electronic expansion valve and the second solenoid valve;

[0012] The fourth solenoid valve is arranged on the second branch, the starting point of the second branch is located on the pipeline between the first electronic expansion valve and the second solenoid valve, and the end point is located on the pipeline between the first solenoid valve and the evaporator.

[0013] Furthermore, the chiller comprises:

[0014] A fifth solenoid valve is arranged on the pipeline between the compressor and the heating water tank;

[0015] The sixth solenoid valve is arranged on the pipeline between the compressor and the condenser. One end of the pipeline where the sixth solenoid valve is located is connected to the condenser, and the other end is connected to the pipeline between the compressor and the fifth solenoid valve.

[0016] The present invention also provides a control method for a chiller, which is applied to the above-mentioned chiller, wherein the method includes: confirming the operating conditions of the chiller; executing corresponding control strategies according to the operating conditions to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop.

[0017] Furthermore, the operating conditions of the chiller include at least: refrigeration condition, refrigeration-heat recovery condition, ice storage condition, and ice storage-heat recovery condition.

[0018] Further, under the refrigeration condition, a corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop, including:

[0019] The second electronic expansion valve, the sixth solenoid valve, and the first solenoid valve are controlled to open, and the first electronic expansion valve, the fifth solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled to close, so as to control the refrigerant of the chiller to run the cold water circulation loop.

[0020] Further, under the refrigeration-heat recovery working condition, a corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop, including:

[0021] The first electronic expansion valve, the fifth solenoid valve, and the fourth solenoid valve are controlled to be opened, and the second electronic expansion valve, the sixth solenoid valve, the first solenoid valve, the second solenoid valve, and the third solenoid valve are controlled to be closed, so as to control the refrigerant of the chiller to run the cold water circulation loop.

[0022] Furthermore, under the ice storage condition, a corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop, including:

[0023] The second electronic expansion valve, the sixth solenoid valve, the second solenoid valve, and the third solenoid valve are controlled to be opened, and the first electronic expansion valve, the fifth solenoid valve, the first solenoid valve, and the fourth solenoid valve are controlled to be closed, so as to control the refrigerant of the chiller to run the refrigerant circulation loop.

[0024] Further, under the ice storage-heat recovery working condition, a corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate the refrigerant circulation loop or the cold water circulation loop, including:

[0025] The first electronic expansion valve, the fifth solenoid valve, and the second solenoid valve are controlled to be opened, and the second electronic expansion valve, the sixth solenoid valve, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled to be closed to control the refrigerant of the chiller to run the refrigerant circulation loop.

[0026] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the program implements the above method when executed by a processor.

[0027] The present invention also provides an electronic device, which includes: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the method as described above.

[0028] By applying the technical solution of the present invention, a chiller structure and a control method thereof are proposed. By switching the refrigerant circulation loop accordingly under different working conditions, the evaporator and the condenser can provide cold water / hot water with independent temperatures, so that the chiller can operate at the optimal efficiency state under various working conditions and meet the optimal efficiency requirements of various water temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a chiller in the related art;

[0030] Figure 2 is a schematic structural diagram of a chiller according to an embodiment of the present invention;

[0031] Figure 3 is a flow chart of a method for controlling a chiller according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0034] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] It should be understood that although the terms first, second, third, etc. may be used to describe the solenoid valves in the embodiments of the present invention, the solenoid valves should not be limited to these terms. These terms are only used to distinguish the solenoid valves. For example, without departing from the scope of the embodiments of the present invention, the first solenoid valve may also be referred to as the second solenoid valve, and similarly, the second solenoid valve may also be referred to as the first solenoid valve.

[0036] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0037] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0038] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] Example 1

[0040] This embodiment provides a chiller that can switch between different refrigerant circulation loops under different working conditions: a chilled water circulation loop and a refrigerant circulation loop. However, conventional chillers do not distinguish between a chilled water circulation loop and a refrigerant circulation loop. Figure 1 It is a schematic diagram of the structure of a chiller in the related technology, such as Figure 1As shown, the compressor, condenser, and evaporator are connected in sequence, and the ice storage device is connected to the evaporator.

[0041] When the unit is required to operate in various working conditions such as refrigeration / heat recovery / ice storage, the unit refrigerant loop remains unchanged, and only the water circuit is switched through the solenoid valve. The entire unit always operates in the "refrigerant-water-water" heat exchange process. There are two heat exchanges from the evaporator to the ice storage device. The first heat exchange is inside the evaporator, and the second heat exchange is between the ice water (about minus 5 degrees) from the evaporator and the ice storage device. When operating in heat recovery or ice storage conditions, there will be temperature difference losses, which reduces the energy efficiency of the unit.

[0042] This embodiment provides a chiller that can switch between different refrigerant circulation circuits under different working conditions: a chilled water circulation circuit and a refrigerant circulation circuit. Figure 2 is a schematic diagram of the structure of a chiller according to an embodiment of the present invention. Figure 2 As shown, the chiller includes: a compressor, a condenser, and an evaporator connected in sequence, the evaporator is directly connected to the chilled water system, and also includes: an ice storage device, whose water outlet pipeline is connected to the compressor, and whose water inlet pipeline is connected to the heating water tank; a first electronic expansion valve, which is arranged on the pipeline between the heating water tank and the ice storage device; a second electronic expansion valve, which is arranged on the pipeline between the condenser and the evaporator; a first solenoid valve, which is arranged on the pipeline between the second electronic expansion valve and the evaporator; a second solenoid valve, which is arranged on the pipeline between the first electronic expansion valve and the ice storage device; a third solenoid valve, which is arranged on the first branch, the starting point of the first branch is located on the pipeline between the second electronic expansion valve and the first solenoid valve, and the end point is located on the pipeline between the first electronic expansion valve and the second solenoid valve; a fourth solenoid valve, which is arranged on the second branch, the starting point of the second branch is located on the pipeline between the first electronic expansion valve and the second solenoid valve, and the end point is located on the pipeline between the first solenoid valve and the evaporator. The fifth solenoid valve is arranged on the pipeline between the compressor and the heating water tank; the sixth solenoid valve is arranged on the pipeline between the compressor and the condenser. One end of the pipeline where the sixth solenoid valve is located is connected to the condenser, and the other end is connected to the pipeline between the compressor and the fifth solenoid valve.

[0043] Since the chiller structure of this embodiment can realize the corresponding switching of the refrigerant circulation circuit under different working conditions: the refrigerant circulation circuit and the cold water circulation circuit, the evaporator and condenser in the chiller of this embodiment can reduce the capacity, for example, the evaporator can only retain the evaporator of the cold water system.

[0044] The above-mentioned chiller may also include: a control device for confirming the operating conditions of the chiller; executing corresponding control strategies according to the operating conditions to control the refrigerant of the chiller to operate the refrigerant circulation loop or the cold water circulation loop. Based on this, the evaporator and condenser in the chiller of this embodiment can both provide cold water / hot water with independent temperatures, and the refrigerant system entering the ice storage device and the heating water tank part is also another form of chiller evaporator and condenser. Therefore, it can be understood that this embodiment proposes a chiller structure with multiple evaporators and multiple condensers. The chiller of this embodiment operates at the best efficiency state under various working conditions, meeting the best efficiency requirements of various water temperature conditions.

[0045] Example 2

[0046] According to an embodiment of the present invention, a control method embodiment of a chiller is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0047] Figure 3 is a flow chart of a control method for a chiller according to an embodiment of the present invention. The control method is applied to the chiller described in the above embodiment. Figure 3 As shown, the method comprises the following steps:

[0048] Step S301, confirming the operating conditions of the chiller; the operating conditions of the chiller at least include: refrigeration conditions, refrigeration-heat recovery conditions, ice storage conditions, and ice storage-heat recovery conditions.

[0049] Step S302, executing a corresponding control strategy according to the operating conditions to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop.

[0050] The chiller structure of this embodiment can realize the corresponding switching of the refrigerant circulation circuit under different working conditions. Both the evaporator and the condenser can provide cold water / hot water with independent temperatures, so that the chiller operates at the best efficiency state under various working conditions and meets the best efficiency requirements of various water temperature conditions.

[0051] The following describes the control strategies implemented under various working conditions, that is, how to switch the refrigerant circulation circuit.

[0052] (1) Refrigeration conditions

[0053] Under refrigeration conditions, the corresponding control strategy is executed according to the operating conditions to control the refrigerant of the chiller to operate the refrigerant circulation loop or the cold water circulation loop, which can be achieved through the following preferred implementations:

[0054] The second electronic expansion valve, the sixth solenoid valve, and the first solenoid valve are controlled to open, and the first electronic expansion valve, the fifth solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled to close, so as to control the refrigerant of the chiller to run the cold water circulation loop.

[0055] Under the above control strategy, the refrigerant comes out of the compressor, passes through the condenser, the second electronic expansion valve, the evaporator, and returns to the compressor. The evaporator provides conventional cold water (for example, 7°C cold water) for the air conditioning system, and the condenser is connected to the cooling tower for heat dissipation.

[0056] (2) Refrigeration-heat recovery conditions

[0057] Under the refrigeration-heat recovery condition, the corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate the refrigerant circulation loop or the cold water circulation loop, which can be achieved through the following preferred implementations:

[0058] The first electronic expansion valve, the fifth solenoid valve, and the fourth solenoid valve are controlled to be opened, and the second electronic expansion valve, the sixth solenoid valve, the first solenoid valve, the second solenoid valve, and the third solenoid valve are controlled to be closed, so as to control the refrigerant of the chiller to run the cold water circulation loop.

[0059] Compared with conventional systems, this process eliminates the condenser heat exchange link. The refrigerant comes out of the compressor and directly enters the heating water tank to provide heat for domestic hot water. It then goes to the evaporator after throttling through the first electronic expansion valve and finally returns to the compressor. At this time, because the condensation side uses refrigerant to directly heat domestic hot water, compared with the conventional "refrigerant-cooling water-domestic hot water" triple heat exchange system, the condensation temperature can be reduced and the operating efficiency of the chiller can be improved.

[0060] (3) Ice storage conditions

[0061] Under the ice storage condition, the corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate the refrigerant circulation loop or the cold water circulation loop, which can be achieved through the following preferred implementations:

[0062] The second electronic expansion valve, the sixth solenoid valve, the second solenoid valve, and the third solenoid valve are controlled to open, and the first electronic expansion valve, the fifth solenoid valve, the first solenoid valve, and the fourth solenoid valve are controlled to close, so as to control the refrigerant of the chiller to run the refrigerant circulation loop.

[0063] Compared with conventional systems, this process eliminates the evaporator heat exchange link. The refrigerant comes out of the compressor, passes through the condenser and the second electronic expansion valve, and then directly enters the ice storage device for low-temperature ice making, and then returns to the compressor. At this time, because the evaporation side uses refrigerant to directly make ice, compared with the conventional "refrigerant-chilled water-ice making" triple heat exchange system, the evaporation temperature can be increased and the operating efficiency of the chiller can be improved.

[0064] (4) Ice storage-heat recovery condition

[0065] Under the ice storage-heat recovery condition, the corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate the refrigerant circulation loop or the cold water circulation loop, which can be achieved through the following preferred implementations:

[0066] The first electronic expansion valve, the fifth solenoid valve, and the second solenoid valve are controlled to be opened, and the second electronic expansion valve, the sixth solenoid valve, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled to be closed to control the refrigerant of the chiller to operate the refrigerant circulation loop.

[0067] Compared with conventional systems, this process eliminates the heat exchange links of the evaporator and condenser. The refrigerant comes out of the compressor and directly enters the heating water tank to provide heat for domestic hot water. It is then throttled through the first electronic expansion valve, and then directly enters the ice storage device for low-temperature ice making, and finally returns to the compressor.

[0068] Example 3

[0069] This embodiment provides an electronic device, which is used in a control method for a chiller, and the electronic device includes: at least one processor; and a memory connected to the at least one processor in communication; wherein:

[0070] The memory stores instructions that can be executed by the one processor, and the instructions are executed by the at least one processor so that the at least one processor can: confirm the operating conditions of the chiller; the operating conditions of the chiller at least include: refrigeration conditions, refrigeration-heat recovery conditions, ice storage conditions, ice storage-heat recovery conditions; execute corresponding control strategies according to the operating conditions to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop.

[0071] Example 4

[0072] The embodiment of the present invention provides a software, which is used to execute the technical solutions described in the above embodiment and preferred implementation manner.

[0073] An embodiment of the present invention provides a non-volatile computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions can execute the control method of the chiller in any of the above method embodiments.

[0074] The above-mentioned software is stored in the above-mentioned storage medium, which includes but is not limited to: a CD, a floppy disk, a hard disk, an erasable memory, etc.

[0075] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0076] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0077] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0078] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0079] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0080] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0081] The above product can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the method provided by the embodiment of the present invention.

[0082] The electronic devices of the embodiments of the present invention exist in various forms, including but not limited to:

[0083] (1) Mobile communication devices: These devices are characterized by their mobile communication functions and their main purpose is to provide voice and data communications. These terminals include: smart phones (such as iPhone), multimedia phones, functional phones, and low-end phones.

[0084] (2) Ultra-mobile personal computer devices: These devices fall into the category of personal computers, have computing and processing capabilities, and generally also have mobile Internet access features. These terminals include: PDA, MID and UMPC devices, such as iPad.

[0085] (3) Portable entertainment devices: These devices can display and play multimedia content. They include audio and video players (such as iPods), handheld game consoles, e-books, as well as smart toys and portable car navigation devices.

[0086] (4) Server: A device that provides computing services. The server consists of a processor, hard disk, memory, device bus, etc. The server is similar to the general computer architecture, but because it needs to provide highly reliable services, it has higher requirements in terms of processing power, stability, reliability, security, scalability, manageability, etc.

[0087] (5) Other electronic devices with data interaction functions, such as televisions, large-screen cars, etc.

[0088] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chiller, characterized in that: The chiller comprises: a compressor, a condenser, and an evaporator connected in sequence, wherein the evaporator is directly connected to a chilled water system, and further comprises: An ice storage device, whose water outlet pipeline is connected to the compressor and whose water inlet pipeline is connected to the heating water tank; A first electronic expansion valve is arranged on the pipeline between the heating water tank and the ice storage device; A second electronic expansion valve is arranged on the pipeline between the condenser and the evaporator; a first solenoid valve, arranged on a pipeline between the second electronic expansion valve and the evaporator; a second solenoid valve, arranged on a pipeline between the first electronic expansion valve and the ice storage device; a third solenoid valve, arranged on the first branch, wherein the starting point of the first branch is located on the pipeline between the second electronic expansion valve and the first solenoid valve, and the end point is located on the pipeline between the first electronic expansion valve and the second solenoid valve; The fourth solenoid valve is arranged on the second branch, the starting point of the second branch is located on the pipeline between the first electronic expansion valve and the second solenoid valve, and the end point is located on the pipeline between the first solenoid valve and the evaporator.

2. The chiller according to claim 1, characterized in that: The chiller comprises: A fifth solenoid valve is arranged on the pipeline between the compressor and the heating water tank; The sixth solenoid valve is arranged on the pipeline between the compressor and the condenser. One end of the pipeline where the sixth solenoid valve is located is connected to the condenser, and the other end is connected to the pipeline between the compressor and the fifth solenoid valve.

3. A control method for a chiller, applied to the chiller according to claim 1 or 2, characterized in that: The method comprises: Confirm the operating conditions of the chiller; A corresponding control strategy is executed according to the operating conditions to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop.

4. The method according to claim 3, characterized in that The operating conditions of the chiller include at least: refrigeration condition, refrigeration-heat recovery condition, ice storage condition, and ice storage-heat recovery condition.

5. The method according to claim 4, characterized in that Under the refrigeration condition, a corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop, including: The second electronic expansion valve, the sixth solenoid valve, and the first solenoid valve are controlled to open, and the first electronic expansion valve, the fifth solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled to close, so as to control the refrigerant of the chiller to run the cold water circulation loop.

6. The method according to claim 4, characterized in that Under the refrigeration-heat recovery working condition, a corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate the refrigerant circulation loop or the cold water circulation loop, including: The first electronic expansion valve, the fifth solenoid valve, and the fourth solenoid valve are controlled to be opened, and the second electronic expansion valve, the sixth solenoid valve, the first solenoid valve, the second solenoid valve, and the third solenoid valve are controlled to be closed, so as to control the refrigerant of the chiller to run the cold water circulation loop.

7. The method according to claim 4, characterized in that Under the ice storage condition, a corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop, including: The second electronic expansion valve, the sixth solenoid valve, the second solenoid valve, and the third solenoid valve are controlled to be opened, and the first electronic expansion valve, the fifth solenoid valve, the first solenoid valve, and the fourth solenoid valve are controlled to be closed, so as to control the refrigerant of the chiller to run the refrigerant circulation loop.

8. The method according to claim 4, characterized in that Under the ice storage-heat recovery working condition, a corresponding control strategy is executed according to the operating condition to control the refrigerant of the chiller to operate a refrigerant circulation loop or a cold water circulation loop, including: The first electronic expansion valve, the fifth solenoid valve, and the second solenoid valve are controlled to be opened, and the second electronic expansion valve, the sixth solenoid valve, the first solenoid valve, the third solenoid valve, and the fourth solenoid valve are controlled to be closed to control the refrigerant of the chiller to run the refrigerant circulation loop.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 3 to 8 is implemented.

10. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, enables the one or more processors to implement the method as claimed in any one of claims 3 to 8.

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