A heat pump unit

Abstract

This utility model provides a heat pump unit, relating to the technical field of heat pumps. The heat pump unit includes an outdoor unit, an indoor unit, and a first electrical control box. The first electrical control box integrates the electrical control components of the indoor unit, is independent of the indoor unit, is connected to the indoor unit, and is also connected to the electrical control components of the outdoor unit. In actual use, if the outdoor unit needs to be replaced, it can be replaced with an outdoor unit compatible with the indoor unit; if the entire unit needs to be upgraded, both the outdoor unit and the first electrical control box can be upgraded simultaneously. In this case, only the new first electrical control box needs to be connected to the existing indoor unit. For example, the temperature acquisition module sensor of the new electrical control box can be installed at the target detection position of the existing indoor unit, and the water pump control module of the new electrical control box can be connected to the water pump of the existing indoor unit. This allows the existing indoor unit to continue to be used, thus significantly saving costs. Furthermore, the independent location of the first electrical control box outside the indoor unit facilitates maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of heat pumps, and more specifically, to a heat pump unit. Background Technology

[0002] In existing technologies, heat pump units typically include an indoor unit and an outdoor unit, which are connected together. The indoor unit is connected to the user terminal to provide users with domestic hot water or heating.

[0003] In actual use, due to the relatively harsh outdoor environment, the service life of the outdoor unit is relatively short. When the outdoor unit needs to be replaced, there are two options: one is to replace the entire heat pump unit. With this option, users can choose a new brand or upgrade, but the cost is relatively high; the other is to only replace the outdoor unit, but only the matching outdoor unit can be replaced. With this option, it is not possible to upgrade or replace the outdoor unit with another brand, which cannot meet the user's higher usage needs. Utility Model Content

[0004] The purpose of this utility model is to provide a heat pump unit to solve the technical problem that in the prior art, both the indoor and outdoor units need to be updated and upgraded when the heat pump unit is upgraded, and it is not possible to only upgrade the outdoor unit.

[0005] The heat pump unit provided by this utility model includes an outdoor unit, an indoor unit, and a first electrical control box. The first electrical control box integrates the electrical control part of the indoor unit, is independent of the indoor unit, is connected to the indoor unit, and is connected to the electrical control part of the outdoor unit.

[0006] Furthermore, the first electrical control box is equipped with a main control board and a temperature acquisition module, a water pump control module, and an indoor / outdoor unit communication module connected to the main control board. The temperature acquisition module is used to acquire the inlet and outlet water temperatures on the water circulation side of the heat exchanger of the indoor unit, as well as the inlet and outlet liquid temperatures on the refrigerant circulation side. The water pump control module is used to control the start and stop of the water pump of the indoor unit. The indoor / outdoor unit communication module is used for communication between the indoor unit and the outdoor unit.

[0007] Furthermore, the temperature acquisition module includes an inlet water temperature sensor, an outlet water temperature sensor, an inlet liquid temperature sensor, and an outlet liquid temperature sensor. The probe of the inlet water temperature sensor is installed in the inlet pipe of the heat exchanger, the probe of the outlet water temperature sensor is installed in the outlet pipe of the heat exchanger, the probe of the inlet liquid temperature sensor is installed in the inlet pipe of the heat exchanger, and the probe of the outlet liquid temperature sensor is installed in the outlet pipe of the heat exchanger.

[0008] Furthermore, the indoor / outdoor unit communication module includes an indoor / outdoor unit communication connector, which is connected to the electronic control part of the outdoor unit and is used to transmit the temperature information of the indoor unit to the outdoor unit.

[0009] Furthermore, the water pump control module includes a water pump terminal block for connecting to the water pump of the indoor unit to control the start and stop of the water pump; the main control board is connected to a terminal block, and the water pump terminal block is disposed on the terminal block.

[0010] Furthermore, the terminal block is also provided with an electric heating terminal for connecting to the electric heater of the indoor unit to control the opening and closing of the electric heater.

[0011] Furthermore, the terminal block is also provided with a fan coil linkage communication line terminal, a floor heating solenoid valve terminal, and an electric two-way valve terminal. The fan coil linkage communication line is used for communication between the fan and the coil, the floor heating solenoid valve is used to control the opening and closing of the floor heating, and the electric two-way valve is used to control the connection of either the fan coil linkage communication line or the floor heating solenoid valve.

[0012] Furthermore, the main control board is also connected to a power connector for direct connection to a power source, or for connection to the power cord of the outdoor unit, or for connection to the power cord of the indoor unit.

[0013] Optionally, the first electrical control box also integrates the electrical control components of the outdoor unit.

[0014] Optionally, the heat pump unit further includes a second electrical control box, which integrates the electrical control part of the outdoor unit, is independent of the outdoor unit, and is connected to the first electrical control box.

[0015] The heat pump unit provided by this utility model can produce the following beneficial effects:

[0016] The heat pump unit provided by this utility model has a first electrical control box that is set independently of the indoor unit and integrates the electrical control part of the indoor unit. In actual use, if the outdoor unit needs to be updated, it can be updated to an outdoor unit that matches the indoor unit; if the entire unit needs to be upgraded, the outdoor unit and the first electrical control box can be updated and upgraded simultaneously. At that time, it is only necessary to connect the new first electrical control box to the original indoor unit. For example, the temperature acquisition module sensor of the new electrical control box is installed at the target detection position of the original indoor unit, and the water pump control module of the new electrical control box is connected to the water pump of the original indoor unit, etc., so that the original indoor unit can continue to be used, thereby greatly saving costs.

[0017] In addition, the first electrical control box is set up independently outside the indoor unit, which makes it very convenient for maintenance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A simplified schematic diagram of the split structure of the heat pump unit provided in this embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the main structure of the first electrical control box of the heat pump unit provided in this embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the main structure of the indoor unit of the heat pump unit provided in this embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the main structure of the outdoor unit of the heat pump unit provided in an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100 - First electrical control box; 110 - Main control board; 120 - Temperature acquisition module; 121 - Inlet water temperature sensor; 122 - Outlet water temperature sensor; 123 - Inlet liquid temperature sensor; 124 - Outlet liquid temperature sensor; 130 - Indoor and outdoor unit communication connector; 140 - Terminal block; 141 - Water pump wiring terminal; 142 - Electric heating wiring terminal; 143 - Fan coil linkage communication line wiring terminal; 144 - Floor heating solenoid valve wiring terminal; 145 - Electric two-way valve wiring terminal; 146 - Indoor and outdoor unit communication wiring terminal; 150 - Power connector;

[0025] 200 - Outdoor unit; 210 - Compressor; 220 - Gas-liquid separator; 230 - Four-way valve; 240 - Condenser; 250 - Subcooler; 261 - Suction temperature sensor; 262 - Discharge temperature sensor; 263 - High pressure sensor; 264 - Ambient temperature sensor; 265 - Defrost temperature sensor; 266 - Auxiliary circuit inlet temperature sensor; 267 - Auxiliary circuit outlet temperature sensor; 271 - Low pressure switch; 272 - Main electronic expansion valve; 273 - Injection enthalpy electronic expansion valve;

[0026] 300 - Indoor unit; 310 - Heat exchanger; 321 - Water inlet pipe; 322 - Water outlet pipe; 323 - Liquid inlet pipe; 324 - Liquid outlet pipe;

[0027] P1 - Installation position of inlet water temperature sensor probe; P2 - Installation position of outlet water temperature sensor probe; P3 - Installation position of inlet liquid temperature sensor probe; P4 - Installation position of outlet liquid temperature sensor probe. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0029] This embodiment provides a heat pump unit, such as Figure 1 As shown, the heat pump unit includes an outdoor unit 200, an indoor unit 300, and a first electrical control box 100. The first electrical control box 100 integrates the electrical control part of the indoor unit 300, is independent of the indoor unit 300, is connected to the indoor unit 300, and is connected to the electrical control part of the outdoor unit 200.

[0030] The heat pump unit provided in this embodiment has a first electrical control box 100 that is set independently of the indoor unit 300 and integrates the electrical control part of the indoor unit 300. In actual use, if the outdoor unit 200 needs to be updated, it can be updated to an outdoor unit 200 that is compatible with the indoor unit 300; if the entire unit needs to be upgraded, the outdoor unit 200 and the first electrical control box 100 can be updated and upgraded simultaneously. At that time, it is only necessary to connect the new first electrical control box 100 to the original indoor unit 300. For example, the sensor of the temperature acquisition module 120 of the new electrical control box can be installed at the target detection position of the original indoor unit 300, and the water pump control module of the new electrical control box can be connected to the water pump of the original indoor unit 300, etc., so that the original indoor unit 300 can continue to be used, thereby greatly saving costs. In addition, the first electrical control box 100 is set independently of the indoor unit 300, which is also very convenient for maintenance.

[0031] Specifically, in this embodiment, as Figure 2 As shown, the first electrical control box 100 is equipped with a main control board 110 and a temperature acquisition module 120, a water pump control module, and an indoor / outdoor unit communication module connected to the main control board 110. The temperature acquisition module 120 is used to acquire the inlet and outlet water temperatures of the water circulation side of the heat exchanger 310 of the indoor unit 300, as well as the inlet and outlet liquid temperatures of the refrigerant circulation side. The water pump control module is used to control the start and stop of the water pump of the indoor unit 300. The indoor / outdoor unit communication module is used for communication between the indoor unit 300 and the outdoor unit 200.

[0032] More specifically, in this embodiment, continuing as follows Figure 2As shown, the temperature acquisition module 120 includes an inlet water temperature sensor 121, an outlet water temperature sensor 122, an inlet liquid temperature sensor 123, and an outlet liquid temperature sensor 124. The probe of the inlet water temperature sensor 121 is installed in the inlet pipe 321 of the heat exchanger 310, the probe of the outlet water temperature sensor 122 is installed in the outlet pipe 322 of the heat exchanger 310, the probe of the inlet liquid temperature sensor 123 is installed in the inlet pipe 323 of the heat exchanger 310, and the probe of the outlet liquid temperature sensor 124 is installed in the outlet pipe 324 of the heat exchanger 310.

[0033] More specifically, each temperature sensor includes a connector, an electrical connection wire, and a probe. The connector and the probe are located at opposite ends of the electrical connection wire. The connector is plugged into the main control board 110. In use, the probe is installed at the position to be measured in the indoor unit 300.

[0034] Figure 3 The main structure of the indoor unit 300 of the heat pump unit provided in this embodiment is shown. P1 indicates the installation position of the probe of the inlet water temperature sensor 121, P2 indicates the installation position of the probe of the outlet water temperature sensor 122, P3 indicates the installation position of the probe of the inlet liquid temperature sensor 123, and P4 indicates the installation position of the probe of the outlet liquid temperature sensor 124.

[0035] It should be noted that the outdoor unit 200 and the first electrical control box 100 of the heat pump unit provided in this embodiment can also be used with indoor units of other brands. In this case, it is only necessary to connect the modules of the first electrical control box 100 to the corresponding structures of the indoor units of other brands. For example, if the indoor units of other brands are already equipped with the above-mentioned temperature sensors, then when using the outdoor unit 200 and the first electrical control box 100 of the heat pump unit provided in this embodiment, the above-mentioned temperature sensors of the first electrical control box 100 can be installed near the corresponding sensors of the indoor units of other brands. In this way, the temperature of each part of the indoor unit can be obtained through the first electrical control box 100, so that the indoor unit can continue to be used without replacement.

[0036] In this embodiment, as Figure 2As shown, the indoor / outdoor unit communication module includes an indoor / outdoor unit communication connector 130. The connector 130 connects to the electrical control section of the outdoor unit 200 to establish communication between the outdoor unit 200 and the indoor unit 300, for example, to transmit temperature information from the indoor unit 300 to the outdoor unit 200. Since the indoor / outdoor unit communication cable connects the indoor unit 300 and the outdoor unit 200, it is typically installed through a wall. To reduce consumables, save costs, and improve replacement efficiency, when the connector of the existing indoor / outdoor unit communication cable matches the indoor / outdoor unit communication connector 130 of the first electrical control box 100, the end connected to the existing indoor unit 300 can be changed to connect to the indoor / outdoor unit communication connector 130 of the first electrical control box 100, thereby establishing communication between the new outdoor unit 200 and the existing indoor unit 300. Indoor / outdoor units of the same brand typically use the same communication cable; in this case, the indoor / outdoor unit communication connector 130 can be used to establish a connection between the new outdoor unit 200 and the existing indoor unit 300.

[0037] In this embodiment, continue as follows Figure 2 As shown, terminal block 140 also has reserved indoor / outdoor unit communication wiring terminals 146 for using existing indoor / outdoor unit communication lines. When the brand of the new outdoor unit 200 and the user's original indoor unit 300 are different, the connector of the original indoor / outdoor unit communication line is usually incompatible with the indoor / outdoor unit communication connector 130 of the first electrical control box 100. In this case, if the original indoor / outdoor unit communication line is used, the connector at the end connected to the original indoor unit 300 can be removed, and then connected to the indoor / outdoor unit communication wiring terminal 146 of the first electrical control box 100, thereby establishing communication between the new outdoor unit 200 and the original indoor unit 300.

[0038] Of course, even if the new outdoor unit 200 and the original indoor unit 300 are of different brands, if the connector of the original indoor and outdoor unit communication line is matched with the indoor and outdoor unit communication connector 130 of the first electrical control box 100, communication between the new outdoor unit 200 and the original indoor unit 300 can be quickly established through the indoor and outdoor unit communication connector 130.

[0039] Specifically, in this embodiment, the water pump control module includes a water pump terminal block 141 for connecting to the water pump of the indoor unit 300 to control the start and stop of the water pump; the main control board 110 is connected to a terminal block 140, and the water pump terminal block 141 is disposed on the terminal block 140. By centrally arranging all the connection terminals through the terminal block 140, the layout of the first electrical control box 100 is modular, facilitating assembly and maintenance. Preferably, the terminal block 140 can be provided with at least two wiring terminals required by the water pump, to accommodate cases where the indoor unit 300 has one or two water pumps.

[0040] Specifically, in this embodiment, the terminal block 140 is further provided with an electric heating terminal 142 for connecting to the electric heater of the indoor unit 300 to control the opening and closing of the electric heater. When the existing indoor unit 300 is equipped with an electric heater, it can be connected to the electric heating terminal 142 so that the electrical control box 100 can control the electric heater.

[0041] Specifically, in this embodiment, the terminal block 140 is further provided with a fan coil unit linkage communication line terminal 143, a floor heating solenoid valve terminal 144, and an electric two-way valve terminal 145. The fan coil unit linkage communication line is used for communication between the fan and the coil unit, the floor heating solenoid valve is used to control the opening and closing of the floor heating system, and the electric two-way valve is used to control the connection of either the fan coil unit linkage communication line or the floor heating solenoid valve. With this configuration, when the fan coil unit linkage communication line is connected to the fan coil unit linkage communication line terminal 143, the floor heating solenoid valve is connected to the floor heating solenoid valve terminal 144, and an electric two-way valve is installed at the electric two-way valve terminal 145, the user can choose to use either the fan coil unit linkage function or the floor heating function.

[0042] Specifically, in this embodiment, the main control board 110 is also connected to a power connector 150, which is used to connect directly to a power source, or to connect to the power cord of the outdoor unit 200, or to connect to the power cord of the indoor unit 300.

[0043] In other embodiments of this application, the first electrical control box 100 may also integrate the electrical control components of the outdoor unit 200, such as adding a temperature acquisition module corresponding to the outdoor unit 200 and wiring terminals for various switches and solenoid valves. In this case, when only the indoor unit 300 needs to be replaced and the outdoor unit 200 does not need to be replaced, a connection can be established between the first electrical control box 100 and the original outdoor unit 200 to control the outdoor unit 200. Alternatively, in other embodiments of this application, the heat pump unit may also include a second electrical control box. The second electrical control box integrates the electrical control components of the outdoor unit 200 and is independent of the outdoor unit 200, and is connected to the first electrical control box 100, which can also meet the requirement of replacing only the indoor unit 300 without replacing the outdoor unit 200.

[0044] As for the outdoor unit 200, this embodiment uses existing technology. Figure 4 The main structure of the existing outdoor unit 200 is shown, such as Figure 4As shown, the main components include a compressor 210, a gas-liquid separator 220, a four-way valve 230, a condenser 240, a subcooler 250, and multiple temperature or pressure sensors, specifically including a suction temperature sensor 261, a discharge temperature sensor 262, a high-pressure sensor 263, an ambient temperature sensor 264, a defrost temperature sensor 265, an auxiliary circuit inlet temperature sensor 266, and an auxiliary circuit outlet temperature sensor 267. It also includes multiple switches and valves, specifically including a low-pressure switch 271, a main electronic expansion valve 272, and an enthalpy-injection electronic expansion valve 273. The connection relationships and working principles of these components are all mature existing technologies, and therefore will not be elaborated further here.

[0045] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. 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 the present invention. Therefore, the present invention 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 disclosed herein.

Claims

1. A heat pump unit, characterized by It includes an outdoor unit (200), an indoor unit (300), and a first electrical control box (100). The first electrical control box (100) integrates the electrical control part of the indoor unit (300), is independent of the indoor unit (300), is connected to the indoor unit (300), and is connected to the electrical control part of the outdoor unit (200).

2. The heat pump unit according to claim 1, characterized in that, The first electrical control box (100) is provided with a main control board (110) and a temperature acquisition module (120), a water pump control module and an indoor / outdoor unit communication module connected to the main control board (110). The temperature acquisition module (120) is used to acquire the inlet and outlet water temperatures of the water circulation side of the heat exchanger (310) of the indoor unit (300) and the inlet and outlet liquid temperatures of the refrigerant circulation side. The water pump control module is used to control the start and stop of the water pump of the indoor unit (300). The indoor / outdoor unit communication module is used for communication between the indoor unit (300) and the outdoor unit (200).

3. The heat pump unit according to claim 2, characterized in that, The temperature acquisition module (120) includes an inlet water temperature sensor (121), an outlet water temperature sensor (122), an inlet liquid temperature sensor (123), and an outlet liquid temperature sensor (124). The probe of the inlet water temperature sensor (121) is located in the inlet pipe (321) of the heat exchanger (310), the probe of the outlet water temperature sensor (122) is located in the outlet pipe (322) of the heat exchanger (310), the probe of the inlet liquid temperature sensor (123) is located in the inlet pipe (323) of the heat exchanger (310), and the probe of the outlet liquid temperature sensor (124) is located in the outlet pipe (324) of the heat exchanger (310).

4. The heat pump unit according to claim 2, characterized in that, The indoor-outdoor unit communication module includes an indoor-outdoor unit communication connector (130), which is connected to the electrical control part of the outdoor unit (200) and is used to transmit the temperature information of the indoor unit (300) to the outdoor unit (200).

5. The heat pump unit according to claim 2, characterized in that, The water pump control module includes a water pump terminal (141) for connecting to the water pump of the indoor unit (300) to control the start and stop of the water pump; the main control board (110) is connected to a terminal block (140), and the water pump terminal (141) is disposed on the terminal block (140).

6. The heat pump unit according to claim 5, characterized in that, The terminal block (140) is also provided with an electric heating terminal (142) for connecting to the electric heater of the indoor unit (300) to control the opening and closing of the electric heater.

7. The heat pump unit according to claim 5, characterized in that, The terminal block (140) is also provided with a fan coil linkage communication line terminal (143), a floor heating solenoid valve terminal (144), and an electric two-way valve terminal (145). The fan coil linkage communication line is used for communication between the fan and the coil. The floor heating solenoid valve is used to control the opening and closing of the floor heating. The electric two-way valve is used to control the connection of either the fan coil linkage communication line or the floor heating solenoid valve.

8. The heat pump unit according to claim 5, characterized in that, The main control board (110) is also connected to a power connector (150) for direct connection to a power source, or for connection to the power cord of the outdoor unit (200), or for connection to the power cord of the indoor unit (300).

9. The heat pump unit according to claim 1, characterized in that, The first electrical control box (100) also integrates the electrical control part of the outdoor unit (200).

10. The heat pump unit according to claim 1, characterized in that, The heat pump unit also includes a second electrical control box, which integrates the electrical control part of the outdoor unit (200), is independent of the outdoor unit (200), and is connected to the first electrical control box (100).

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