Water temperature adjusting unit and multi-unit series water temperature adjusting system

Abstract

The embodiment of the invention relates to a water temperature adjusting unit and a multi-unit series water temperature adjusting system. The water temperature adjusting unit comprises a controller, water temperature adjusting equipment, a water flow control valve, a bypass water pipe, an equipment water inlet pipe and an equipment water outlet pipe. The water flow control valve is arranged on a water flow path of the bypass water pipe and a water flow path of the equipment water inlet pipe or the equipment water outlet pipe; the controller is electrically connected with the water flow control valve and the water temperature adjusting equipment; the controller is used for controlling the water flow control valve to enable the bypass water pipe to be communicated with the equipment water inlet pipe and the equipment water outlet pipe and to enable the water temperature adjusting equipment to be disconnected from the equipment water inlet pipe or the equipment water outlet pipe when it is detected that the water temperature adjusting equipment breaks down. According to the embodiment of the invention, the heat loss of the temperature-adjusted water in the water temperature adjusting equipment when the water temperature adjusting equipment breaks down is avoided, and the energy efficiency, the operation reliability and the scene adaptability of the water temperature adjusting unit can be improved.

Description

Technical Field

[0001] This application relates to the field of temperature control equipment technology, and in particular to a water temperature regulating unit and a multi-unit series water temperature regulating system. Background Technology

[0002] Multi-compressor water-cooled chiller units, as a highly efficient refrigeration device, are widely used in industrial production, commercial buildings, data centers, and other fields. This type of equipment, by configuring multiple independently operating compressors, can flexibly start and stop different compressors according to actual load requirements, thereby achieving more precise load matching; the water-cooled series configuration effectively improves the energy efficiency of each module, achieving optimal overall unit energy efficiency.

[0003] Furthermore, in multi-compressor water chiller units, the other compressors can continue to operate even if a single compressor fails, ensuring system stability and reliability. However, when one compressor stops running, the refrigerant inside the evaporator and condenser continues to circulate due to pressure differential. Low-temperature refrigerant from the evaporator will enter the condenser, and high-temperature refrigerant from the condenser will also enter the evaporator. After heat exchange with the chilled / hot water, heat loss is inevitable. Therefore, how to prevent the refrigerant temperature from affecting the water temperature after a compressor failure is a problem that urgently needs to be solved. Summary of the Invention

[0004] In view of this, in order to solve some or all of the above-mentioned technical problems, this application provides a water temperature regulating unit and a multi-unit series water temperature regulating system.

[0005] In a first aspect, embodiments of this application provide a water temperature regulating unit, which includes: a controller, a water temperature regulating device, a water flow control valve, a bypass water pipe, a device inlet pipe, and a device outlet pipe; the inlet of the bypass water pipe is connected to the device inlet pipe, and the outlet of the bypass water pipe is connected to the device outlet pipe; the device inlet pipe is connected to the inlet of the water temperature regulating device, and the outlet of the water temperature regulating device is connected to the device outlet pipe; the water flow control valve is disposed on the water flow path of the bypass water pipe and on the water flow path of the device inlet pipe or the device outlet pipe; the controller is electrically connected to the water flow control valve and the water temperature regulating device; the controller is used to: control the water flow control valve to connect the bypass water pipe to the device inlet pipe and the device outlet pipe, and disconnect the water temperature regulating device from the device inlet pipe or the device outlet pipe when a malfunction of the water temperature regulating device is detected.

[0006] In one possible implementation, the water temperature regulating device includes an evaporator, a condenser, and a compressor, which are connected to each other via refrigerant pipes; a controller is electrically connected to the compressor; the controller is used to: if the compressor stops, control the water flow control valve to connect the bypass water pipe to the equipment inlet pipe and the equipment outlet pipe, and disconnect the water temperature regulating device from the equipment inlet pipe or the equipment outlet pipe.

[0007] In one possible implementation, the equipment inlet pipe is connected to the evaporator inlet, the evaporator outlet is connected to the equipment outlet pipe, and the bypass pipe is connected to the evaporator water flow path.

[0008] In one possible implementation, the equipment inlet pipe is connected to the condenser inlet, the condenser outlet is connected to the equipment outlet pipe, and the bypass water pipe is connected to the condenser water flow path.

[0009] In one possible implementation, the equipment inlet pipe includes a cooling inlet pipe and a heating inlet pipe, and the equipment outlet pipe includes a cooling outlet pipe and a heating outlet pipe; the cooling inlet pipe is connected to the inlet of the evaporator, and the outlet of the evaporator is connected to the cooling outlet pipe; the heating inlet pipe is connected to the inlet of the condenser, and the outlet of the condenser is connected to the heating outlet pipe; the bypass water pipe includes a cooling bypass water pipe and a heating bypass water pipe, the inlet of the cooling bypass water pipe is connected to the cooling inlet pipe, and the outlet of the cooling bypass water pipe is connected to the cooling outlet pipe; the inlet of the heating bypass water pipe is connected to the heating inlet pipe, and the outlet of the heating bypass water pipe is connected to the heating outlet pipe; the water flow control valve includes a cooling water flow control valve and a hot water flow control valve, the cooling water flow control valve being located at the connection between the cooling bypass water pipe and the cooling inlet pipe or the cooling outlet pipe; the hot water flow control valve being located at the connection between the heating bypass water pipe and the heating inlet pipe or the heating outlet pipe.

[0010] In one possible implementation, the controller is further configured to: when the water temperature regulating device is in cooling mode, if a compressor shutdown is detected, control the water flow control valve to connect the bypass water pipe to the device inlet pipe and the device outlet pipe, and disconnect the water temperature regulating device from the device inlet pipe or the device outlet pipe; when the water temperature regulating device is in heating mode, if a compressor shutdown is detected, control the water flow control valve to connect the bypass water pipe to the device inlet pipe and the device outlet pipe, and disconnect the water temperature regulating device from the device inlet pipe or the device outlet pipe.

[0011] In one possible implementation, the water flow control valve is a controlled three-way valve; the controlled three-way valve is located at the connection between the bypass water pipe and the equipment inlet pipe or the equipment outlet pipe.

[0012] In one possible implementation, the water flow control valve includes a first shut-off valve and a second shut-off valve. The first shut-off valve is located in the water flow path of the bypass water pipe, and the second shut-off valve is located in the water flow path of the equipment inlet pipe or the equipment outlet pipe.

[0013] Secondly, embodiments of this application provide a multi-unit series water temperature regulation system. The system includes: a controller and a preset number of water temperature regulation subsystems. Each water temperature regulation subsystem includes a water temperature regulation device, a water flow control valve, a bypass water pipe, a device inlet pipe, and a device outlet pipe. The controller is electrically connected to each water temperature regulation subsystem, including the water temperature regulation device. The controller and any water temperature regulation subsystem constitute the aforementioned water temperature regulation unit. The preset number of water temperature regulation subsystems are connected in series through a main water pipe.

[0014] In one possible implementation, each of the preset number of water temperature regulation subsystems includes an evaporator, a condenser, and a compressor. The controller is electrically connected to each compressor. Each evaporator is connected in series through a cooling water circuit pipe, and each condenser is connected in series through a hot water circuit pipe.

[0015] The water temperature regulating unit and multi-unit series water temperature regulating system provided in this application embodiment are equipped with a controller, water temperature regulating equipment, water flow control valve, bypass water pipe, equipment inlet pipe and equipment outlet pipe. The water flow control valve is set on the water flow path of the bypass water pipe and the water flow path of the equipment inlet pipe or equipment outlet pipe. When the controller detects a malfunction of the water temperature regulating equipment, it controls the water flow control valve to connect the bypass water pipe with the equipment inlet pipe and equipment outlet pipe, and disconnect the water temperature regulating equipment from the equipment inlet pipe or equipment outlet pipe. This allows the water flow to bypass the malfunctioning water temperature regulating equipment, avoiding reverse heat transfer between the refrigerant in the water temperature regulating equipment and the water being regulated due to the flow of the refrigerant. Therefore, this application embodiment avoids heat loss of the water being regulated in the water temperature regulating equipment when it malfunctions, which helps to improve the energy efficiency, operational reliability and scenario adaptability of the water temperature regulating unit. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is a schematic diagram of the structure of a water temperature regulating unit provided in an embodiment of this application;

[0020] Figure 2A A schematic diagram showing the installation position of the water flow control valve provided in an embodiment of this application;

[0021] Figure 2B This is a schematic diagram of another installation position of the water flow control valve provided in an embodiment of this application;

[0022] Figure 3A A schematic diagram showing the installation positions of the first shut-off valve and the second shut-off valve provided in the embodiments of this application;

[0023] Figure 3B A schematic diagram showing another installation position of the first and second shut-off valves provided in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of another water temperature regulating unit provided in an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the structure of another water temperature regulating unit provided in the embodiments of this application;

[0026] Figure 6 This is a schematic diagram of the structure of another water temperature regulating unit provided in the embodiments of this application;

[0027] Figure 7 This application provides a schematic diagram of the structure of a multi-unit series water temperature control system.

[0028] Figure 8 This is a schematic diagram of another multi-unit series water temperature regulation system provided in an embodiment of this application.

[0029] Figure label:

[0030] 100-Water temperature regulating unit; 101-Controller; 102-Water temperature regulating equipment; 1021-Evaporator; 1022-Condenser; 1023-Compressor; 103-Water flow control valve; 1031-Refrigeration water flow control valve; 1032-Hot water flow control valve; 104-Bypass water pipe; 1041-Refrigeration bypass water pipe; 1042-Heating bypass water pipe; 105-Equipment inlet water pipe; 1051-Refrigeration inlet water pipe; 1052-Heating inlet water pipe; 106-Equipment outlet water pipe; 1061-Refrigeration outlet water pipe; 1062-Heating outlet water pipe; 107-Downstream main water pipe; 108-Upstream main water pipe; 700-Multi-unit series water temperature regulating system; 701-Preset number of water temperature regulating subsystems. Detailed Implementation

[0031] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0032] Those skilled in the art will understand that the terms "first" and "second" in the embodiments of this application are only used to distinguish different steps, devices or modules, and do not represent any specific technical meaning, nor do they indicate the logical order between them.

[0033] It should also be understood that in this embodiment, "multiple" can refer to two or more, and "at least one" can refer to one, two or more.

[0034] It should also be understood that any component, data or structure mentioned in the embodiments of this application can generally be understood as one or more unless explicitly defined or given contrary guidance in the context.

[0035] Furthermore, the term "and / or" in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0036] It should also be understood that the description of the various embodiments in this application emphasizes the differences between the various embodiments, and the similarities or similarities can be referred to each other. For the sake of brevity, they will not be described in detail.

[0037] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0038] Techniques, devices, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, devices, and equipment should be considered part of the specification.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. To facilitate understanding of the embodiments of this application, the application will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] Figure 1 This is a schematic diagram of the structure of a water temperature regulating unit 100 provided in an embodiment of this application. The water temperature regulating unit is typically used in a multi-unit series water temperature regulating system. The water temperature regulating unit 100 specifically includes: a controller 101, a water temperature regulating device 102, a water flow control valve 103, a bypass water pipe 104, a device inlet water pipe 105, and a device outlet water pipe 106.

[0042] like Figure 1 As shown, the inlet of the bypass water pipe 104 is connected to the equipment inlet water pipe 105, and the outlet of the bypass water pipe 104 is connected to the equipment outlet water pipe 106.

[0043] The water inlet pipe 105 of the equipment is connected to the water inlet of the water temperature regulating device 102, and the water outlet of the water temperature regulating device 102 is connected to the water outlet pipe 106 of the equipment.

[0044] A water flow control valve 103 is installed on the water flow path of the bypass water pipe 104 and on the water flow path of the equipment inlet pipe 105 or the equipment outlet pipe 106. The water flow control valve 103 can be used to switch the water flow path, cutting off the water flow path of the bypass water pipe 104 while opening the water flow path of the equipment inlet pipe 105 or the equipment outlet pipe 106. Alternatively, it can open the water flow path of the bypass water pipe 104 while cutting off the water flow path of the equipment inlet pipe 105 or the equipment outlet pipe 106.

[0045] like Figure 1 The water flow control valve 103 shown is installed on the water flow path of the equipment outlet pipe 106. Optionally, it can also be installed on the water flow path of the equipment inlet pipe 105. Both installation methods can realize the on / off control of the water flow path of the water flowing into the water temperature regulating device 102.

[0046] The controller 101 is electrically connected to the water flow control valve 103 and the water temperature regulating device 102. The controller 101 can be various electronic devices with logic processing capabilities, such as MCU (Microcontroller Unit), DSP (Digital Signal Processor), etc.

[0047] The controller 101 is used to: control the water flow control valve 103 to connect the bypass water pipe 104 to the equipment inlet pipe 105 and the equipment outlet pipe 106 when a malfunction is detected in the water temperature regulating device 102, and disconnect the water temperature regulating device 102 from the equipment inlet pipe 105 or the equipment outlet pipe 106.

[0048] In this embodiment, the water temperature regulating device 102 may include various sensors for monitoring its operating status. If a sensor signal is abnormal, the controller 101 will send a shutdown command to the water temperature regulating device 102, and the compressor 1023 in the water temperature regulating device 102 will stop running. At this time, due to the pressure difference of the refrigerant in the water temperature regulating device 102, the refrigerant will continue to flow, causing the heat of the refrigerant to exchange with the water flowing into the water temperature regulating device 102, thereby causing water temperature fluctuations.

[0049] To avoid water temperature fluctuations, in this embodiment, the water flow control valve 103 can switch the water flow path under the control of the controller 101. That is, when the water temperature regulating device 102 is operating normally, the water flow control valve 103 closes the water flow path of the bypass water pipe 104 and opens the water flow path between the device inlet pipe 105 and the device outlet pipe 106. If a malfunction is detected in the water temperature regulating device 102 (for example, if the compressor 1023 inside the water temperature regulating device 102 stops), the controller 101 controls the water flow control valve 103 to open the water flow path of the bypass water pipe 104 and close the water flow path between the device inlet pipe 105 and the device outlet pipe 106, thereby allowing water to bypass the water temperature regulating device 102 through the bypass water pipe 104. The water continues to flow to other water temperature regulating units or to the user end.

[0050] The water temperature regulating unit provided in this embodiment of the application includes a controller 101, a water temperature regulating device 102, a water flow control valve 103, a bypass water pipe 104, a device inlet water pipe 105, and a device outlet water pipe 106. The water flow control valve 103 is located on the water flow path of the bypass water pipe 104, and on the water flow path of either the device inlet water pipe 105 or the device outlet water pipe 106. When the controller 101 detects a malfunction in the water temperature regulating device 102, it controls the water flow control valve 103 to connect the bypass water pipe 104 with the water flow path of the device inlet water pipe 105 and the device outlet water pipe 106. The water outlet pipe 106 is connected, and the water temperature regulating device 102 is disconnected from the water inlet pipe 105 or the water outlet pipe 106, so that the water flow bypasses the malfunctioning water temperature regulating device 102. This avoids the refrigerant in the water temperature regulating device 102 from generating reverse heat transfer with the water being regulated due to the flow of the refrigerant. Therefore, this embodiment of the application avoids heat loss of the water being regulated in the water temperature regulating device 102 when it malfunctions, which helps to improve the energy efficiency, operational reliability and scenario adaptability of the water temperature regulating unit.

[0051] In some optional implementations of this embodiment, the water flow control valve 103 is a controlled three-way valve; the controlled three-way valve is located at the connection between the bypass water pipe 104 and the equipment inlet pipe 105 or the equipment outlet pipe 106.

[0052] like Figure 2A As shown, the two inlets of the controlled three-way valve are connected to the bypass water pipe 104 and the equipment outlet water pipe 106, respectively, and the outlet of the controlled three-way valve is connected to the downstream main water pipe 107. When the water temperature regulating device 102 is functioning correctly, the path between the equipment outlet water pipe 106 and the outlet of the controlled three-way valve is continuous, while the path between the bypass water pipe 104 and the outlet of the controlled three-way valve is disconnected. Water flows into the water temperature regulating device 102 through the equipment inlet pipe 105. After the water temperature regulating device 102 cools or heats the incoming water, it flows out of the water temperature regulating device 102 through the equipment outlet pipe 106 and further flows to other water temperature regulating units or the user end through the downstream main water pipe 107.

[0053] In the event of a malfunction detected in the water temperature regulating device 102, the controller 101 switches the state of the controlled three-way valve, disconnecting the path between the device's outlet pipe 106 and the outlet of the controlled three-way valve, while connecting the path between the bypass water pipe 104 and the outlet of the controlled three-way valve. Water flows through the bypass water pipe 104 to the outlet of the controlled three-way valve, and further flows through the downstream main water pipe 107 to other water temperature regulating units or the user end, thereby preventing heat exchange between the refrigerant in the water temperature regulating device 102 and the water whose temperature is being regulated.

[0054] like Figure 2BAs shown, the two inlets of the controlled three-way valve are connected to the upstream main water pipe 108 and the bypass water pipe 104, respectively, and the outlet of the controlled three-way valve is connected to the equipment inlet pipe 105. When the water temperature regulating device 102 is functioning correctly, the path between the upstream main water pipe 108 and the outlet of the controlled three-way valve is continuous, while the path between the upstream main water pipe 108 and the bypass water pipe 104 is disconnected. Water flows into the water temperature regulating device 102 through the equipment inlet pipe 105. After the water temperature regulating device 102 cools or heats the incoming water, it flows out of the water temperature regulating device 102 through the equipment outlet pipe 106 and further flows to other water temperature regulating units or the user end through the downstream main water pipe 107.

[0055] In the event of a malfunction detected in the water temperature regulating device 102, the controller 101 switches the state of the controlled three-way valve, disconnecting the path between the upstream main water pipe 108 and the outlet of the controlled three-way valve, while connecting the path between the upstream main water pipe 108 and the bypass water pipe 104. Water flows through the bypass water pipe 104 to the downstream main water pipe 107, and then through the downstream main water pipe 107 to other water temperature regulating units or the user end, thereby preventing heat exchange between the refrigerant in the water temperature regulating device 102 and the water whose temperature is being regulated.

[0056] This embodiment, by setting a three-way valve, can achieve the switching of water flow path with fewer components, thereby improving system integration and reducing the complexity of system installation and control.

[0057] In some optional implementations of this embodiment, the water flow control valve 103 includes a first shut-off valve S1 and a second shut-off valve S2. The first shut-off valve S1 is disposed on the water flow path of the bypass water pipe 104, and the second shut-off valve S2 is disposed on the water flow path of the equipment inlet pipe 105 or the equipment outlet pipe 106.

[0058] like Figure 3A As shown, the first shut-off valve S1 is installed in the water flow path of the bypass water pipe 104, and the second shut-off valve S2 is installed in the water flow path of the equipment outlet water pipe 106. Figure 3B As shown, the first shut-off valve S1 is installed on the water flow path of the bypass water pipe 104, and the second shut-off valve S2 is installed on the water flow path of the equipment inlet pipe 105.

[0059] If the water temperature regulating device 102 is not malfunctioning, the first shut-off valve S1 is closed and the second shut-off valve S2 is open. Water flows into the water temperature regulating device 102 through the inlet pipe 105. After the water temperature regulating device 102 cools or heats the incoming water, it flows out of the water temperature regulating device 102 through the outlet pipe 106 and further flows to other water temperature regulating units or users through the downstream main water pipe 107.

[0060] If a malfunction is detected in the water temperature regulating device 102, the controller 101 controls the first shut-off valve S1 to open and the second shut-off valve S2 to close. The water flows through the bypass water pipe 104 to the downstream main water pipe 107, and further through the downstream main water pipe 107 to other water temperature regulating units or users, thereby preventing heat exchange between the refrigerant in the water temperature regulating device 102 and the water whose temperature is being regulated.

[0061] This embodiment achieves separate control of the water flow path in the bypass water pipe 104 and the water flow path in the water temperature regulating device 102 by setting a first shut-off valve S1 and a second shut-off valve S2. This results in higher stability of water flow path switching and facilitates system maintenance.

[0062] In some optional implementations of this embodiment, such as Figure 4 As shown, the water temperature regulating device 102 includes an evaporator 1021, a condenser 1022, and a compressor 1023. The evaporator 1021, condenser 1022, and compressor 1023 are connected to each other via refrigerant pipes. The refrigerant flows from the compressor to the condenser, then from the condenser to the evaporator, and finally returns from the evaporator to the compressor.

[0063] In this embodiment, water can enter the evaporator 1021 through the inlet pipe 105 of the aforementioned equipment. The refrigerant in the evaporator 1021 absorbs heat from the water, and the cooled water is discharged from the outlet pipe 106 of the equipment. Correspondingly, the bypass water pipe 104 can be connected to the water flow path of the evaporator 1021.

[0064] Water can also enter the condenser 1022 through the inlet pipe 105 of the aforementioned equipment. The condenser 1022 releases the heat of the refrigerant into the water, and discharges the heated water from the outlet pipe 106 of the equipment. Correspondingly, the bypass water pipe 104 can be connected to the water flow path of the condenser 1022.

[0065] The controller 101 is electrically connected to the compressor 1023.

[0066] The controller 101 is used to: if the compressor 1023 is detected to stop, control the water flow control valve 103 to connect the bypass water pipe 104 to the equipment inlet water pipe 105 and the equipment outlet water pipe 106, and disconnect the water temperature regulating device 102 from the equipment inlet water pipe 105 or the equipment outlet water pipe 106.

[0067] When compressor 1023 stops due to a malfunction, the refrigerant in evaporator 1021 and condenser 1022 will continue to circulate due to the pressure difference, causing the refrigerant to undergo reverse heat exchange with the water in water temperature regulating device 102, which in turn causes fluctuations in the water temperature required by the user and affects the stability of water temperature regulation.

[0068] This embodiment monitors the status of the compressor 1023. When the compressor 1023 stops, water flows through the bypass water pipe 104, bypassing the evaporator 1021 or condenser 1022. This avoids reverse heat exchange between the refrigerant in the evaporator 1021 or condenser 1022 and the water, thus preventing heat loss and improving energy efficiency and water temperature regulation stability.

[0069] In some optional implementations of this embodiment, such as Figure 4 As shown, the equipment inlet pipe 105 is connected to the inlet of the evaporator 1021, the outlet of the evaporator 1021 is connected to the equipment outlet pipe 106, and the bypass water pipe 104 is connected to the water flow path of the evaporator 1021.

[0070] In this embodiment, the water temperature regulating device 102 operates in cooling mode. The water temperature regulating unit can be a single cooling unit, meaning that when the water temperature regulating device 102 is operating normally, the water flowing into the evaporator 1021 is chilled water. When the compressor 1023 stops due to a malfunction, the refrigerant in the evaporator 1021 and condenser 1022 continues to circulate due to the pressure difference, causing a large amount of high-temperature refrigerant in the condenser 1022 to flow into the evaporator 1021. At this time, if chilled water enters the evaporator 1021, the heat from the high-temperature refrigerant in the evaporator 1021 will be conducted to the chilled water. Instead of cooling down, the chilled water will heat up due to heat exchange with the high-temperature refrigerant.

[0071] Therefore, in this embodiment, by controlling the water flow control valve 103, the water flow path of the bypass water pipe 104 is opened, and the water flow path between the inlet and outlet of the evaporator 1021 is closed. The chilled water bypasses the evaporator 1021 and flows directly to other water temperature regulating devices 102 or the user end, thereby avoiding fluctuations in the temperature of the chilled water and avoiding increased energy consumption caused by fluctuations in the temperature of the chilled water.

[0072] In some optional implementations of this embodiment, such as Figure 5 As shown, the equipment inlet pipe 105 is connected to the inlet of the condenser 1022, the outlet of the condenser 1022 is connected to the equipment outlet pipe 106, and the bypass water pipe 104 is connected to the water flow path of the condenser 1022.

[0073] In this embodiment, the water temperature regulating device 102 operates in heating mode. The water temperature regulating unit can be a single heating unit, meaning that when the water temperature regulating device 102 is operating normally, the water flowing into the condenser 1022 is heated water. When the compressor 1023 stops due to a malfunction, the refrigerant in the evaporator 1021 and condenser 1022 continues to circulate due to the pressure difference, causing a large amount of low-temperature refrigerant in the evaporator 1021 to flow into the condenser 1022. At this time, if heated water enters the condenser 1022, the low-temperature refrigerant in the condenser 1022 will absorb the heat from the heated water, causing the heated water to exchange heat with the refrigerant and cool down.

[0074] Therefore, in this embodiment, by controlling the water flow control valve 103, the water flow path of the bypass water pipe 104 is opened, and the water flow path between the inlet and outlet of the condenser 1022 is closed. The heated water bypasses the condenser 1022 and flows directly to other water temperature regulating devices 102 or the user end, thereby avoiding fluctuations in the temperature of the heated water and avoiding increased energy consumption caused by fluctuations in the temperature of the heated water.

[0075] In some optional implementations of this embodiment, such as Figure 6 As shown, the equipment water inlet pipe 105 includes a cooling water inlet pipe 1051 and a heating water inlet pipe 1052, and the equipment water outlet pipe 106 includes a cooling water outlet pipe 1061 and a heating water outlet pipe 1062.

[0076] The cooling water inlet pipe 1051 is connected to the water inlet of the evaporator 1021, and the water outlet of the evaporator 1021 is connected to the cooling water outlet pipe 1061. The heating water inlet pipe 1052 is connected to the water inlet of the condenser 1022, and the water outlet of the condenser 1022 is connected to the heating water outlet pipe 1062.

[0077] The bypass water pipe 104 includes a cooling bypass water pipe 1041 and a heating bypass water pipe 1042. The inlet of the cooling bypass water pipe 1041 is connected to the cooling inlet water pipe 1051, and the outlet of the cooling bypass water pipe 1041 is connected to the cooling outlet water pipe 1061. The inlet of the heating bypass water pipe 1042 is connected to the heating inlet water pipe 1052, and the outlet of the heating bypass water pipe 1042 is connected to the heating outlet water pipe 1062.

[0078] The water flow control valve 103 includes a chilled water flow control valve 1031 and a hot water flow control valve 1032. The chilled water flow control valve 1031 is installed on the water flow path of the chilled bypass water pipe 1041 and on the water flow path of the chilled water inlet pipe 1051 or the chilled equipment outlet pipe 106.

[0079] The hot water flow control valve 1032 is installed on the water flow path of the heating bypass water pipe 1042, and on the water flow path of the heating equipment inlet pipe 105 or the heating equipment outlet pipe 106.

[0080] This embodiment can be applied to heat pump units, that is, the water temperature regulating unit can both cool and heat. In the cooling mode, the flow of chilled water into the evaporator 1021 is stopped; in the heating mode, the flow of heating water into the condenser 1022 is stopped.

[0081] This embodiment will refer to the above. Figure 5 , Figure 6 In combination with the corresponding embodiments, when the compressor 1023 stops due to a malfunction, the flow of chilled water into the evaporator 1021 can be stopped to avoid reverse heat exchange between the refrigerant and the chilled water, which would lead to a deterioration in the cooling effect. Alternatively, when the compressor 1023 stops due to a malfunction, the flow of heating water into the condenser 1022 can be stopped to avoid reverse heat exchange between the refrigerant and the heating water, which would lead to a deterioration in the heating effect.

[0082] In some optional implementations of this embodiment, the controller 101 is further configured to:

[0083] When the water temperature regulating device 102 is in cooling mode, if the compressor 1023 is detected to have stopped, the cooling water flow control valve 1031 is controlled to connect the bypass water pipe 104 with the cooling water inlet pipe 1051 and the cooling equipment outlet pipe 106, and to disconnect the evaporator 1021 from the cooling water inlet pipe 1051 or the cooling equipment outlet pipe 106.

[0084] When the water temperature regulating device 102 is in heating mode, if the compressor 1023 is detected to have stopped, the hot water flow control valve 1032 is controlled to connect the bypass water pipe 104 to the heating device inlet pipe 105 and the heating device outlet pipe 106, and to disconnect the condenser 1022 from the heating device inlet pipe 105 or the heating device outlet pipe 106.

[0085] This embodiment can be applied to a water temperature regulating device 102 that includes both heating and cooling functions. In both cooling and heating modes, if the compressor 1023 malfunctions and stops, the injection of water requiring temperature regulation into the evaporator 1021 or condenser 1022 can be stopped in time, and water can be input to other water temperature regulating devices 102 or the user end through the bypass water pipe 104, thereby expanding the application scenarios of the water temperature regulating unit provided in this embodiment.

[0086] Figure 7 A schematic diagram of a multi-unit series water temperature regulation system 700 provided in this application embodiment is shown below. Figure 7 As shown, the multi-unit series water temperature control system 700 specifically includes: a controller 101 and a preset number of water temperature control subsystems 701. The number of water temperature control subsystems can be set according to requirements, such as... Figure 7 As shown, the system includes three water temperature regulation subsystems, including water temperature regulation devices 1-3 and water flow control valves 1-3.

[0087] Each water temperature regulation subsystem includes a water temperature regulation device 102, a water flow control valve 103, a bypass water pipe 104, an equipment inlet pipe 105, and an equipment outlet pipe 106.

[0088] The controller 101 is electrically connected to each water temperature regulation subsystem, including the water temperature regulation device 102. The controller 101 and any water temperature regulation subsystem constitute the water temperature regulation unit of the above embodiment. A preset number of water temperature regulation subsystems are connected in series through a main water pipe. The controller 101 can monitor the status of each water temperature regulation subsystem in real time. If a fault is detected in any water temperature regulation device 102 included in any water temperature regulation subsystem, the controller 101 controls the corresponding water flow control valve 103 to connect the corresponding bypass water pipe 104 to the equipment inlet pipe 105 and the equipment outlet pipe 106, and disconnects the faulty water temperature regulation device 102 from the equipment inlet pipe 105 or the equipment outlet pipe 106.

[0089] The last water temperature regulation subsystem in series delivers the regulated water to the user end through the main water pipe, providing the user with chilled or heated water.

[0090] The multi-unit series water temperature control system provided in this application embodiment, by connecting multiple water temperature control units in series, can realize real-time detection of the operating status of each water temperature control subsystem. In the event of a failure in any subsystem, the water flow bypasses the failed water temperature control subsystem, avoiding reverse heat transfer between the refrigerant and the water being regulated due to the refrigerant flow. This avoids heat loss of the water being regulated in the water temperature control equipment when the water temperature control subsystem fails, and helps to improve the energy efficiency, operational reliability and scenario adaptability of the water temperature control unit.

[0091] In some optional implementations of this embodiment, such as Figure 8 As shown, each of the preset number of water temperature regulation subsystems includes an evaporator 1021, a condenser 1022 and a compressor 1023. The controller 101 is electrically connected to each compressor. Each evaporator is connected in series through a refrigeration main water pipe, and each condenser is connected in series through a heating main water pipe.

[0092] Optionally, each water temperature regulation subsystem in this embodiment can be as described above. Figure 4 As shown, the bypass water pipe 104 is connected to the inlet and outlet water pipes of the evaporator 1021. The controller 101 can, when the compressor 1023 is stopped, direct water flow bypassing the evaporator 1021 to the next water temperature regulation subsystem's evaporator 1021, or provide it to the user. Each water temperature regulation subsystem can also be configured as described above. Figure 5As shown, the bypass water pipe 104 is connected to the inlet and outlet water pipes of the condenser 1022. The controller 101 can bypass the condenser 1022 and allow water to enter the next water temperature regulation subsystem condenser 1022 when the compressor 1023 is stopped, or provide it to the user.

[0093] like Figure 8 As shown, each water temperature regulation subsystem can be connected to the above-mentioned... Figure 6 The structures shown are identical. In cooling mode, if the compressor 1023 stops, the water flows past the evaporator 1021 and into the evaporator 1021 of the next water temperature regulation subsystem, or is provided to the user. In heating mode, if the compressor 1023 stops, the water flows past the condenser 1022 and into the condenser 1022 of the next water temperature regulation subsystem, or is provided to the user.

[0094] In this embodiment, the evaporators and condensers of multiple water temperature control subsystems are connected in series. This enables the control of the water flow path corresponding to the evaporator or the water flow path corresponding to the condenser when any water temperature control subsystem fails, thereby preventing the refrigerant from undergoing reverse heat exchange with the chilled water or heated water, which would lead to a deterioration in the cooling or heating effect.

[0095] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different devices to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0096] The steps of the apparatus or algorithm described in connection with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0097] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0098] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A water temperature regulating unit, characterized in that, The water temperature regulating unit includes: a controller, water temperature regulating equipment, water flow control valve, bypass water pipe, equipment inlet pipe and equipment outlet pipe; The inlet of the bypass water pipe is connected to the inlet of the equipment, and the outlet of the bypass water pipe is connected to the outlet of the equipment. The water inlet pipe of the device is connected to the water inlet of the water temperature regulating device, and the water outlet of the water temperature regulating device is connected to the water outlet pipe of the device. The water flow control valve is installed on the water flow path of the bypass water pipe, and on the water flow path of the equipment inlet pipe or the equipment outlet pipe. The controller is electrically connected to the water flow control valve and the water temperature regulating device; The controller is used to: control the water flow control valve to connect the bypass water pipe to the inlet pipe and outlet pipe of the equipment when a malfunction is detected in the water temperature regulating device, and to disconnect the water temperature regulating device from the inlet pipe or outlet pipe of the equipment.

2. The water temperature regulating unit according to claim 1, characterized in that, The water temperature regulating device includes an evaporator, a condenser, and a compressor, and the evaporator, the condenser, and the compressor are connected to each other via refrigerant pipes; The controller is electrically connected to the compressor; The controller is used to: if the compressor stops, control the water flow control valve to connect the bypass water pipe to the equipment inlet pipe and the equipment outlet pipe, and disconnect the water temperature regulating device from the equipment inlet pipe or the equipment outlet pipe.

3. The water temperature regulating unit according to claim 2, characterized in that, The equipment's water inlet pipe is connected to the evaporator's water inlet, the evaporator's water outlet is connected to the equipment's water outlet pipe, and the bypass water pipe is connected to the evaporator's water flow path.

4. The water temperature regulating unit according to claim 2, characterized in that, The equipment's water inlet pipe is connected to the condenser's water inlet, the condenser's water outlet is connected to the equipment's water outlet pipe, and the bypass water pipe is connected to the condenser's water flow path.

5. The water temperature regulating unit according to claim 2, characterized in that, The equipment's water inlet pipe includes a cooling water inlet pipe and a heating water inlet pipe, and the equipment's water outlet pipe includes a cooling water outlet pipe and a heating water outlet pipe; The cooling water inlet pipe is connected to the water inlet of the evaporator, and the water outlet of the evaporator is connected to the cooling water outlet pipe; The heating water inlet pipe is connected to the water inlet of the condenser, and the water outlet of the condenser is connected to the heating water outlet pipe; The bypass water pipe includes a cooling bypass water pipe and a heating bypass water pipe. The inlet of the cooling bypass water pipe is connected to the cooling inlet water pipe, and the outlet of the cooling bypass water pipe is connected to the cooling outlet water pipe. The inlet of the heating bypass water pipe is connected to the heating inlet water pipe, and the outlet of the heating bypass water pipe is connected to the heating outlet water pipe. The water flow control valve includes a cooling water flow control valve and a hot water flow control valve. The cooling water flow control valve is located at the connection between the cooling bypass water pipe and the cooling water inlet pipe or the cooling water outlet pipe. The hot water flow control valve is located at the connection between the heating bypass water pipe and the heating inlet water pipe or the heating outlet water pipe.

6. The water temperature regulating unit according to claim 5, characterized in that, The controller is further configured to: when the water temperature regulating device is in cooling mode, if the compressor is detected to have stopped, control the water flow control valve to connect the bypass water pipe to the device inlet pipe and the device outlet pipe, and disconnect the water temperature regulating device from the device inlet pipe or the device outlet pipe; when the water temperature regulating device is in heating mode, if the compressor is detected to have stopped, control the water flow control valve to connect the bypass water pipe to the device inlet pipe and the device outlet pipe, and disconnect the water temperature regulating device from the device inlet pipe or the device outlet pipe.

7. The water temperature regulating unit according to any one of claims 1-6, characterized in that, The water flow control valve is a controlled three-way valve; the controlled three-way valve is located at the connection between the bypass water pipe and the equipment inlet pipe or the equipment outlet pipe.

8. The water temperature regulating unit according to any one of claims 1-6, characterized in that, The water flow control valve includes a first shut-off valve and a second shut-off valve. The first shut-off valve is located on the water flow path of the bypass water pipe, and the second shut-off valve is located on the water flow path of the equipment inlet pipe or the equipment outlet pipe.

9. A multi-unit series water temperature control system, characterized in that, The system includes: a controller and a preset number of water temperature regulating subsystems. Each water temperature regulating subsystem includes a water temperature regulating device, a water flow control valve, a bypass water pipe, a device inlet pipe, and a device outlet pipe. The controller is electrically connected to each water temperature regulating subsystem, including the water temperature regulating device. The controller and any water temperature regulating subsystem constitute the water temperature regulating unit according to any one of claims 1-8. The preset number of water temperature regulation subsystems are connected in series through the main water pipe.

10. The multi-unit series water temperature control system according to claim 9, characterized in that, Each of the preset number of water temperature regulation subsystems includes an evaporator, a condenser, and a compressor. The controller is electrically connected to each compressor. Each evaporator is connected in series through a refrigerant water circuit, and each condenser is connected in series through a hot water circuit.

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