Heat pump system control circuit and heat pump system

Abstract

The utility model provides a heat pump system control circuit and a heat pump system, and relates to the technical field of heat pumps. In a control circuit of the heat pump system, a centralized control board is additionally arranged between a controller and a plurality of temperature controllers, the controller can control the plurality of AC24V temperature controllers through the centralized control board, and air conditioner requirements sent by the plurality of temperature controllers and heating requirements corresponding to a heating device are gathered. And the air conditioner demand and the heating demand are sent to the controller, so that the controller controls the outer machine device, the air conditioner demand and the heating demand of the user are met, a multi-area control scene is achieved, and the user experience degree is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a heat pump system control circuit and a heat pump system. Background Art

[0002] Existing heat pump system electrical control solutions mostly use 220V AC (Alternating Current) and 12V DC (Direct Current) thermostats. The controller uses the 220V AC or 12V DC thermostat to control the heat pump for cooling and heating. However, in scenarios with 24V AC thermostats and multi-zone control, the controller cannot directly control the heat pump through the 24V AC thermostat, as the interface of the 24V AC thermostat controls the compressor gear position, the four-way valve opening, and other functions. As a result, the heat pump system cannot meet actual user needs. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a heat pump system control circuit and a heat pump system to alleviate the above-mentioned problem.

[0004] In a first aspect, an embodiment of the present invention provides a heat pump system control circuit, comprising: a centralized control board, a controller connected to the centralized control board, and a plurality of thermostats; wherein the thermostat is an AC24V thermostat, and each thermostat is further connected to a corresponding air conditioner terminal; the centralized control board is further connected to a heating device of the heat pump system;

[0005] The thermostat is used to obtain demand parameters, generate air conditioning demand based on the demand parameters and the actual ambient temperature, and send the air conditioning demand to the centralized control board. The demand parameters include the air conditioning mode and the target temperature, and the air conditioning demand includes multiple switch control signals.

[0006] The central control panel is used to obtain the air conditioning demand and / or the heating demand corresponding to the heating device, and send the air conditioning demand and / or heating demand to the controller;

[0007] The controller is used to obtain air conditioning demand and / or heating demand, and control the outdoor device of the heat pump system according to the air conditioning demand and / or heating demand.

[0008] The above-mentioned heat pump system control circuit adds a centralized control board between the controller and multiple thermostats. The centralized control board not only enables the controller to control multiple AC24V thermostats, but also aggregates the air-conditioning demands sent by multiple thermostats and the heating demands corresponding to the heating devices, and sends the air-conditioning demands and heating demands to the controller so that the controller can control the external devices, thereby meeting the user's air-conditioning and heating demands, realizing multi-zone control scenarios, and improving user experience.

[0009] Preferably, the centralized control board includes a plurality of temperature control units, and each temperature control unit is connected to a corresponding thermostat.

[0010] Preferably, the temperature control unit includes: a first interface, a second interface, a third interface and a fourth interface, and the temperature controller includes: a first compressor gear interface, a second compressor gear interface, a four-way valve switch interface and a fault interface; wherein, the first interface is connected to the first compressor gear interface, the second interface is connected to the second compressor gear interface, the third interface is connected to the four-way valve switch interface, and the fourth interface is connected to the fault interface.

[0011] Preferably, the thermostat further comprises: a first electric heating gear switch and a second electric heating gear switch; wherein the first electric heating gear switch and the second electric heating gear switch are both connected to the electric heating in the corresponding air-conditioning terminal.

[0012] Preferably, the thermostat further includes a fan switch interface; wherein the fan switch interface is connected to the fan in the corresponding air-conditioning terminal.

[0013] Preferably, the centralized control panel further includes a plurality of water pump output interfaces, and the heat pump system further includes a plurality of water pumps; wherein each water pump output interface is connected to a corresponding water pump.

[0014] Preferably, the centralized control panel further includes a heating unit; wherein the heating unit is connected to the heating device.

[0015] Preferably, the controller includes an external machine board and a water cube board; wherein the water cube board is connected to the centralized control board, the external machine board is connected to the external device, and the water cube board is connected to the external machine board.

[0016] Preferably, the controller further includes a wired controller, wherein the wired controller is connected to the water cube board.

[0017] In the second aspect, an embodiment of the present invention also provides a heat pump system, comprising: an air-conditioning terminal, a heating device, an outdoor device and the heat pump system control circuit of the first aspect mentioned above; wherein the air-conditioning terminal, the heating device and the outdoor device are all connected to the heat pump system control circuit.

[0018] The embodiments of the present invention bring the following beneficial effects:

[0019] The embodiment of the present utility model provides a heat pump system control circuit and a heat pump system, which adds a centralized control board between the controller and multiple thermostats, and not only realizes the controller's control of multiple AC24V thermostats through the centralized control board, but also aggregates the air-conditioning demands sent by multiple thermostats and the heating demands corresponding to the heating devices, and sends the air-conditioning demands and heating demands to the controller, so that the controller controls the external device, meets the user's air-conditioning demands and heating demands, realizes multi-zone control scenarios, and improves user experience.

[0020] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A circuit diagram of a heat pump system control circuit provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] To facilitate understanding of this embodiment, the embodiment of the utility model is described in detail below.

[0026] The present invention provides a heat pump system control circuit. Figure 1As shown, it includes: a centralized control panel 12, a controller 11 connected to the centralized control panel 12, and multiple thermostats. Among them, the thermostat is an AC24V thermostat. For the sake of convenience, three thermostats are used as an example. Among them, the three thermostats are respectively a first thermostat 131, a second thermostat 132, and a third thermostat 133; in addition, the heat pump system also includes multiple air-conditioning terminals 2 and a heating device 3. Each thermostat is also connected to a corresponding air-conditioning terminal, such as a first air-conditioning terminal 21 connected to the first thermostat 131, a second air-conditioning terminal 22 connected to the second thermostat 132, and a third air-conditioning terminal 23 connected to the third thermostat 133; the centralized control panel 12 is also connected to the heating device 3 of the heat pump system. The specific number of thermostats and the number of air-conditioning terminals can be set according to actual conditions.

[0027] Specifically, the thermostat is used to obtain demand parameters, generate air conditioning demand based on the demand parameters and the actual ambient temperature, and send the air conditioning demand to the centralized control panel 12; wherein the demand parameters include the air conditioning mode and the target temperature, and the air conditioning demand includes multiple switch control signals. In actual application, the user can set the operating mode of the corresponding air conditioning terminal, i.e., the air conditioning mode, by operating the thermostat panel. The air conditioning modes here include, but are not limited to, heating mode, cooling mode, and dehumidification mode. In addition, the target temperature corresponding to the air conditioning mode can also be set. After the thermostat obtains the air conditioning mode and target temperature, it can output the air conditioning demand including multiple switch control signals based on the current actual ambient temperature, air conditioning mode, and target temperature. The switch control signals are used to control multiple components of the heat pump system to achieve the air conditioning mode and target temperature. The multiple components include, but are not limited to, compressors, electric heaters, fans, and four-way valves, etc., and can be set according to actual conditions.

[0028] In addition, the control panel 12 is used to obtain the air conditioning demand and / or the heating demand corresponding to the heating device, and send the air conditioning demand and / or heating demand to the controller 11; the controller 11 is used to obtain the air conditioning demand and / or heating demand, and control the outdoor device of the heat pump system according to the air conditioning demand and / or heating demand.

[0029] Therefore, the above-mentioned heat pump system control circuit adds a centralized control board 12 between the controller 11 and multiple thermostats, and through the centralized control board 12, not only the controller 11 controls multiple AC24V thermostats, but also summarizes the air-conditioning demands sent by multiple thermostats and the heating demands corresponding to the heating devices, and sends the air-conditioning demands and heating demands to the controller 11, so that the controller 11 controls the external device, meets the user's air-conditioning demands and heating demands, realizes a multi-zone control scenario, and improves the user experience.

[0030] In one embodiment, the centralized control board includes a plurality of temperature control units, and each temperature control unit is connected to a corresponding temperature controller.

[0031] Specifically, if Figure 1 As shown, three temperature control units are shown: ZONE1, ZONE2 and ZONE3; among them, ZONE1 is connected to the first thermostat 131, similarly, ZONE2 is connected to the second thermostat 132, and ZONE3 is connected to the third thermostat 133, so that the control board 12 is connected to the corresponding thermostat through different temperature control units, which is convenient for separate control of the connected thermostats according to the temperature control units, ensuring the control accuracy of multiple AC24V thermostats, thereby ensuring the control accuracy of the heat pump system and improving the user's comfort.

[0032] It should be noted that in actual applications, the number of AC24V thermostats is consistent with the number of temperature control units, or the number of temperature control units is greater than the number of AC24V thermostats, so as to increase the number of AC24V thermostats in actual applications. The specific setting can be made according to actual conditions.

[0033] In one embodiment, the temperature control unit includes: a first interface, a second interface, a third interface and a fourth interface, and the temperature controller includes: a first compressor gear interface, a second compressor gear interface, a four-way valve switch interface and a fault interface; wherein the first interface is connected to the first compressor gear interface, the second interface is connected to the second compressor gear interface, the third interface is connected to the four-way valve switch interface, and the fourth interface is connected to the fault interface.

[0034] Specifically, if Figure 1 As shown, each thermostat includes a first compressor gear interface Y1, a second compressor gear interface Y2, a four-way valve switch interface O / B and a fault interface L; similarly, in the temperature control unit, corresponding interfaces Y1, Y2, O / B and L are also provided. For the sake of convenience, the corresponding interface Y1 in each temperature control unit is referred to as the first interface, and the first interface is connected to the first compressor gear interface Y1 in the corresponding thermostat; similarly, the corresponding interface Y2 in each temperature control unit is referred to as the second interface, and the second interface is connected to the second compressor gear interface Y2 in the corresponding thermostat; the corresponding interface O / B in each temperature control unit is referred to as the third interface, and the third interface is connected to the four-way valve switch interface O / B in the corresponding thermostat; the corresponding interface L in each temperature control unit is referred to as the fourth interface, and the fourth interface is connected to the fault interface L in the corresponding thermostat.

[0035] In actual applications, for example, for the first thermostat 131, both the first compressor gear interface Y1 and the second compressor gear interface Y2 are used to control the operating state of the compressor in the outdoor unit; wherein, the first compressor gear interface Y1 is used to control the compressor to operate at the first gear, and the second compressor gear interface Y2 is used to control the compressor to operate at the second gear. For example, when the user selects the first compressor gear interface Y1 through the thermostat panel, the on / off control signal for the compressor in the air conditioning demand is that the first compressor gear interface Y1 is turned on and the second compressor gear interface Y2 is turned off. The centralized control board 12 obtains the air conditioning demand and forwards it to the controller 11, so that the controller 11 controls the compressor to operate at the first gear according to the air conditioning demand.

[0036] In addition, for the first thermostat 131, the four-way valve switch interface O / B is used to control the switch state of the four-way valve in the outdoor device. The user sets the switch state of the four-way valve through the panel of the thermostat and conveys the corresponding switch control signal to the controller 11 along with the air-conditioning demand, so that the controller 11 controls the switch state of the four-way valve according to the air-conditioning demand.

[0037] Therefore, when each thermostat outputs an air conditioning demand, including an on / off control signal corresponding to the four-way valve and an on / off control signal corresponding to the compressor gear position, to the centralized control board 12, the centralized control board 12 transmits the air conditioning demand to the controller 11, which controls the compressor and four-way valve in the external unit according to the air conditioning demand to implement the user-set air conditioning mode, achieve the corresponding target temperature, and meet the user's air conditioning demand. For example, for the first thermostat 131 in a certain area, the on / off control signal set by the user through its panel is shown in Table 1 below:

[0038] Table 1

[0039]

[0040] According to Table 1 above, when at least one of the first compressor gear interface Y1 and the second compressor gear interface Y2 is opened and the four-way valve is closed, the corresponding first air-conditioning terminal 21 operates in cooling mode; when at least one of the first compressor gear interface Y1 and the second compressor gear interface Y2 is opened and the four-way valve is opened, the corresponding first air-conditioning terminal 21 operates in heating mode; when both the first compressor gear interface Y1 and the second compressor gear interface Y2 are closed, the corresponding first air-conditioning terminal 21 is controlled to shut down.

[0041] In addition, for each thermostat, the fault interface L can also be called the fault input interface. When there is a fault in the heat pump system, the control board 12 transmits the fault signal to the fault interface L of the thermostat via the fourth interface of the corresponding temperature control unit. The thermostat will display the corresponding fault so that the user can promptly grasp the fault information of the heat pump system and maintain the heat pump system in a timely manner.

[0042] Among them, for the air conditioning demands sent by multiple thermostats respectively, the centralized control board 12 forwards the multiple air conditioning demands to the controller 11; the controller 11 analyzes the multiple air conditioning demands. If there is a mode conflict, such as one of the air conditioning modes is heating mode and the other two air conditioning modes are cooling mode, because the operation of the outdoor unit can only meet one air conditioning mode, at this time, the controller 11 determines that a mode conflict fault has occurred and sends the corresponding mode conflict fault signal to the centralized control board 12. After the centralized control board 12 obtains the mode conflict fault signal, if the air conditioning mode sent by the first thermostat 131 is different from the air conditioning mode sent by the other two thermostats, at this time, the centralized control board 12 sends the mode conflict fault signal to the fault interface L of the first thermostat 131 through the fourth interface L of the first temperature control unit ZONE1, so that the first thermostat 131 displays the mode conflict fault signal, which is convenient for the user to perform maintenance in time.

[0043] Furthermore, when the controller 11 fails (such as failing to start, etc.) or the outdoor device fails (such as failing to start or operating abnormally), the controller 11 generates a device fault signal and sends the device fault signal to the centralized control board 12; at this time, the centralized control board 12 sends the device fault signal to the corresponding thermostats through multiple temperature control units, such as sending the device fault signal to the fault interface L of the first thermostat 131 through the fourth interface L of the first temperature control unit ZONE1, sending the device fault signal to the fault interface L of the second thermostat 132 through the fourth interface L of the second temperature control unit ZONE2, and sending the device fault signal to the fault interface L of the third thermostat 133 through the fourth interface L of the third temperature control unit ZONE3, so that all three thermostats display the device fault signal, which is convenient for users to perform equipment maintenance on the heat pump system in a timely manner.

[0044] In particular, when the centralized control board 12 cannot communicate with the controller 11, the centralized control board 12 also generates a communication fault signal and sends the communication fault signal to the corresponding thermostats through multiple temperature control units for display, so that the user can maintain the heat pump system in time.

[0045] In one embodiment, the thermostat further includes: a first electric heating gear switch and a second electric heating gear switch; wherein the first electric heating gear switch and the second electric heating gear switch are both connected to the electric heating in the corresponding air-conditioning terminal.

[0046] For example, Figure 1 As shown, a first electric heating gear switch W1 and a second electric heating gear switch W2 are also provided in the first thermostat 131; wherein, the first electric heating gear switch W1 and the second electric heating gear switch W2 are both used to control the operating state of the electric heating, such as the first electric heating gear switch W1 is used to control the electric heating to operate according to the first gear, and the second electric heating gear switch W2 is used to control the electric heating to operate according to the second gear. The user can realize the operating state control of the electric heating in the corresponding first air-conditioning terminal 21 by operating the first electric heating gear switch W1 and the second electric heating gear switch W2 on the panel of the first thermostat 131. The specific operating process of the electric heating can refer to the existing technology, and the embodiment of the utility model will not be described in detail here.

[0047] In one embodiment, the thermostat further includes a fan switch interface; wherein the fan switch interfaces are all connected to corresponding air conditioning terminals.

[0048] For example, Figure 1 As shown, the first thermostat 131 is also provided with a fan switch interface G for controlling the operating status of the fan in the first air conditioning terminal 21. In actual application, the user can operate the fan switch interface G through the panel of the first thermostat 131 to realize the operating status of the fan in the first air conditioning terminal 21 in the area. In addition, each thermostat is also provided with a dehumidification interface DH. For example, for the first thermostat 131, when the user operates the dehumidification interface DH through the panel of the first thermostat 131, the first air conditioning terminal 21 in the area can be dehumidified. In addition, the first thermostat 131 is also provided with a power supply interface R and a power common terminal interface C. Since the thermostat is an AC24V thermostat, the power supply interface R can also be called an AC24V power supply interface, and the power common terminal interface C can also be called an AC24V power common terminal interface. The power supply of the first thermostat 131 is realized through the power supply interface R and the power common terminal interface C to ensure its normal operation.

[0049] It should be noted that the interface functions of the second thermostat 132 and the third thermostat 133 may refer to the first thermostat 131 , and will not be described in detail in this embodiment of the present invention.

[0050] In one embodiment, the centralized control board further includes a plurality of water pump output interfaces, and the heat pump system further includes a plurality of water pumps; wherein each water pump output interface is connected to a corresponding water pump.

[0051] Specifically, if Figure 1As shown, the control panel 12 also includes multiple water pump output interfaces, such as the water pump output interface ZONE1 PUMP corresponding to the temperature control unit ZONE1. In actual applications, the water pump output interface ZONE1 PUMP is connected to the water pump in the area where the first thermostat 131 corresponding to the temperature control unit ZONE1 is located, and is used to control the on / off state of the water pump. For example, when the first compressor gear interface Y1 or the second compressor gear interface Y2 of the first thermostat 131 corresponding to the temperature control unit ZONE1 is in the ON state, the control panel 12 controls the corresponding water pump to turn on through the water pump output interface ZONE1 PUMP; when the first compressor gear interface Y1 and the second compressor gear interface Y2 are both in the OFF state, the control panel 12 controls the corresponding water pump to turn off through the water pump output interface ZONE1 PUMP.

[0052] Similarly, the water pump output interface ZONE2 PUMP corresponding to the temperature control unit ZONE2 is used to connect to the water pump in the area where the second temperature controller 132 corresponding to the temperature control unit ZONE2 is located, and to control the on / off status of the water pump; the water pump output interface ZONE3 PUMP corresponding to the temperature control unit ZONE3 is used to connect to the water pump in the area where the third temperature controller 133 corresponding to the temperature control unit ZONE3 is located, and to control the on / off status of the water pump.

[0053] In addition, the multiple water pump output interfaces also include PUMP1 and PUMP2, which are used to control the water pumps connected thereto in the heat pump system. It should be noted that the number of water pump output interfaces should be consistent with the number of water pumps.

[0054] In one embodiment, Figure 1 As shown, the centralized control panel 12 also includes a heating unit ZONE4, which is connected to the heating device 3. In actual use, the heating unit ZONE4 monitors the heating demand of the heating device 3 via port X and forwards the heating demand to the controller 11, which controls the external device based on the heating demand to meet the user's heating demand. The specific process of operating the external device to meet the heating demand can be referred to in the prior art and will not be described in detail in this embodiment of the utility model.

[0055] In one embodiment, the controller includes an external machine board and a water cube board; wherein the water cube board is connected to the centralized control board, the external machine board is connected to the external device, and the water cube board is connected to the external machine board. Specifically, Figure 1 As shown, the controller 11 includes an external machine board 111 and a water cube board 112. The water cube board 112 is connected to the central control board 12, and the external machine board 111 is connected to the external machine device ( Figure 1 (not shown) are connected, and the external machine board 111 and the water cube board 112 communicate with each other.

[0056] Among them, the water cube board 112 can also be called the main board. In actual application, the water cube board 112 obtains various air-conditioning demands and / or heating demands forwarded by the central control board 12, and generates an outdoor unit control signal according to the air-conditioning demands and / or heating demands, and sends the outdoor unit control signal to the outdoor unit board 111, so that the outdoor unit board 111 controls the outdoor unit device according to the outdoor unit control signal to meet the user's air-conditioning demands and / or heating demands.

[0057] In addition, when an equipment failure occurs in the outdoor unit, the outdoor unit board 111 will also feed back the fault information to the water cube board 112, so that the water cube board 112 generates an equipment failure signal and sends the equipment failure signal to the centralized control board 12, so that the centralized control board 12 can send the equipment failure signal to the corresponding thermostat for display through the temperature control unit.

[0058] Furthermore, when a conflict occurs between multiple air conditioning modes, the water cube panel 112 generates a mode conflict fault signal and transmits it to the centralized control panel 12. The centralized control panel 12 then transmits the mode conflict fault signal to the corresponding thermostat via the temperature control unit for display, facilitating timely maintenance of the heat pump system. Therefore, in practical applications, the water cube panel 112 and the centralized control panel 12 can together form the water module of the heat pump system. The specific functions of the water module can be referenced in the prior art and will not be further described in detail in the present embodiment.

[0059] Furthermore, if Figure 1 As shown, the controller 11 also includes a wired controller 113, which is connected to the water cube panel 112. A wired controller interface M is provided in the water cube panel 112, and the wired controller 113 is connected to the water cube panel 112 via the wired controller interface M. The specific functions of the wired controller 113 can be referred to in the prior art and will not be described in detail in this embodiment of the present invention.

[0060] It should be noted that in Figure 1 In the figure, interface A and interface B are used to represent mutual communication interfaces. For example, the water cube board 112 and the centralized control board 12 realize two-way communication through interface A and interface B. For example, the centralized control board 12 forwards the air conditioning demand and / or heating demand to the water cube board 112 through interface A, and the water cube board 112 sends the fault signal to the centralized control board 12 through interface B; or, for the outdoor machine board 111 and the water cube board 112, the water cube board 112 sends the outdoor machine control signal to the outdoor machine board 111 through interface A, and the outdoor machine board 111 sends the status detection of the outdoor machine device to the water cube board 112 through interface B, etc. The specific communication process can be set according to actual conditions.

[0061] In summary, the heat pump system control circuit provided by the embodiment of the present invention adds a centralized control board between the controller and multiple thermostats, and through the centralized control board not only realizes the controller's control of multiple AC24V thermostats, but also summarizes the air-conditioning demands sent by multiple thermostats and the heating demands corresponding to the heating devices, and sends the air-conditioning demands and heating demands to the controller so that the controller controls the external device, thereby meeting the user's air-conditioning demands and heating demands, realizing a multi-zone control scenario, and improving the user experience.

[0062] Furthermore, based on the above-mentioned heat pump system control circuit, an embodiment of the present invention also provides a heat pump system, which includes: an air-conditioning terminal, a heating device, an outdoor device and the above-mentioned heat pump system control circuit; wherein the air-conditioning terminal, the heating device and the outdoor device are all connected to the heat pump system control circuit.

[0063] Specifically, the air-conditioning terminal is connected to the AC24V thermostat in the heat pump system control circuit, the heating device is connected to the central control board in the heat pump system control circuit, and the outdoor unit is connected to the controller in the heat pump system control circuit. By adding a central control board to the above-mentioned heat pump system control circuit, not only the adaptation of the AC24V thermostat and controller in the heat pump system is realized, enriching the application scenarios of the heat pump system, but also the air-conditioning demands sent by multiple thermostats and the heating demands corresponding to the heating devices are summarized, and the air-conditioning demands and heating demands are sent to the controller so that the controller controls the outdoor unit, meeting the user's air-conditioning and heating demands, realizing multi-zone control scenarios, and improving user experience; in addition, when a device failure or mode conflict occurs in the heat pump system, the central control board will send the fault signal to the corresponding thermostat through the temperature control unit for display, which is convenient for users to maintain the heat pump system in time and ensure the service life of the heat pump system.

[0064] It should be noted that the working process of the above-mentioned heat pump system can refer to the aforementioned embodiment, and the specific structure of the heat pump system can refer to the existing heat pump system, and the embodiment of the present utility model will not be described in detail here.

[0065] The heat pump system control circuit provided in the embodiments of the present invention can be specific hardware within the heat pump system, or software or firmware installed on the device. The heat pump system provided in the embodiments of the present invention has the same implementation principles and technical effects as the aforementioned embodiments. For the sake of brevity, any details not mentioned in the heat pump system embodiments can be referenced to the corresponding details in the aforementioned heat pump system control circuit embodiments. Those skilled in the art will clearly understand that, for ease and brevity of description, the specific operating processes of the heat pump system described above can be referenced to the corresponding processes in the aforementioned embodiments and will not be further elaborated here.

[0066] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0067] In addition, each functional unit in the embodiment provided by 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.

[0068] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0069] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0070] Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0071] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A heat pump system control circuit, characterized in that: include: A central control panel, and a controller and multiple thermostats connected to the central control panel; wherein the thermostat is an AC24V thermostat, and each thermostat is also connected to a corresponding air conditioning terminal; the central control panel is also connected to the heating device of the heat pump system; The thermostat is configured to obtain demand parameters, generate air conditioning demand based on the demand parameters and the actual ambient temperature, and send the air conditioning demand to the centralized control board; wherein the demand parameters include an air conditioning mode and a target temperature, and the air conditioning demand includes multiple switch control signals; The centralized control board is used to obtain the air conditioning demand and / or the heating demand corresponding to the heating device, and send the air conditioning demand and / or the heating demand to the controller; The controller is used to obtain the air conditioning demand and / or the heating demand, and control the outdoor device of the heat pump system according to the air conditioning demand and / or the heating demand.

2. The heat pump system control circuit according to claim 1, characterized in that: The centralized control board includes a plurality of temperature control units, and each of the temperature control units is connected to the corresponding temperature controller.

3. The heat pump system control circuit according to claim 2, characterized in that: The temperature control unit includes: a first interface, a second interface, a third interface and a fourth interface; the temperature controller includes: a first compressor gear interface, a second compressor gear interface, a four-way valve switch interface and a fault interface; The first interface is connected to the first compressor gear interface, the second interface is connected to the second compressor gear interface, the third interface is connected to the four-way valve switch interface, and the fourth interface is connected to the fault interface.

4. The heat pump system control circuit according to claim 1, characterized in that: The thermostat further includes: a first electric heating gear switch and a second electric heating gear switch; wherein the first electric heating gear switch and the second electric heating gear switch are both connected to the corresponding electric heating in the air-conditioning terminal.

5. The heat pump system control circuit according to claim 1, characterized in that: The thermostat also includes a fan switch interface; wherein the fan switch interface is connected to the fan in the corresponding air-conditioning terminal.

6. The heat pump system control circuit according to claim 1, characterized in that: The centralized control panel further includes a plurality of water pump output interfaces, and the heat pump system further includes a plurality of water pumps; wherein each of the water pump output interfaces is connected to a corresponding water pump.

7. The heat pump system control circuit according to claim 1, characterized in that: The centralized control panel further includes a heating unit, wherein the heating unit is connected to the heating device.

8. The heat pump system control circuit according to claim 1, characterized in that: The controller includes an external machine board and a water cube board; wherein, the water cube board is connected to the centralized control board, the external machine board is connected to the external device, and the water cube board is connected to the external machine board.

9. The heat pump system control circuit according to claim 8, characterized in that: The controller further includes a wire controller, wherein the wire controller is connected to the water cube board.

10. A heat pump system, characterized in that: include: An air conditioning terminal, a heating device, an outdoor device, and a heat pump system control circuit as described in any one of claims 1 to 9 above; wherein the air conditioning terminal, the heating device, and the outdoor device are all connected to the heat pump system control circuit.

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