Air source heat pump air conditioning system control method and air source heat pump air conditioning system

Abstract

The present invention belongs to the technical field of air conditioning control, and discloses a control method for an air source heat pump air conditioning system and an air source heat pump air conditioning system. The control method for an air source heat pump air conditioning system uses an air source heat pump to output water at a preset temperature for a mobile air conditioner, detects the air outlet temperature Tc of the mobile air conditioner, compares it with a preset air outlet temperature T2, turns on the mobile air conditioner's own fluorine heat exchange system, and adjusts the operating frequency of the mobile air conditioner until the difference between the air outlet temperature Tc and the preset air outlet temperature T2 is less than 0.5°C. The control method for an air source heat pump air conditioning system matches and adjusts the water system and the fluorine heat exchange system of the air source heat pump unit, so that the fluorine heat exchange system and the air source heat pump system complement each other. There is no need to further increase the operating frequency of the mobile air conditioner, that is, there is no need to increase the operating frequency of the compressor. While maintaining the cooling or heating capacity, the operating noise is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning heat pumps, and in particular to a control method for an air source heat pump air conditioning system and an air source heat pump air conditioning system. Background Art

[0002] Air conditioners are commonly used for heating or cooling. When wall-mounted or cabinet air conditioners aren't available, or when installing an outdoor unit is inconvenient, portable air conditioners are often used to regulate the temperature within the home. For example, most commercial housing users don't have floor heating in kitchens, utility rooms, and other areas. Installing conventional floor heating would result in low utilization and a low return on investment, while using air conditioners directly for heating would be expensive. Therefore, portable air conditioners are often used for heating. Furthermore, even if air conditioning is installed in the kitchen, the compressor and piping system are located in the ceiling due to space constraints. This noise often causes issues, significantly impacting the user experience, and air conditioners located in the ceiling are inconvenient to repair. While portable air conditioners can meet the temperature regulation needs of these environments, conventional portable air conditioners currently include components such as a compressor and a fluorine circuit system. To ensure adequate cooling or heating capacity, the variable-frequency compressor must operate at high frequencies, resulting in high noise levels and a poor user experience.

[0003] Therefore, there is an urgent need to provide an air source heat pump air conditioning system control method to solve the above technical problems in the prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide an air source heat pump air conditioning system control method, which can control the air source heat pump unit and mobile air conditioner according to usage requirements, improve the temperature regulation ability and reduce noise, and improve the user experience.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In the air source heat pump air conditioning system control method, the air source heat pump air conditioning system includes at least an air source heat pump unit, an air conditioning water pump and a mobile air conditioner connected in sequence, the mobile air conditioner includes a first heat exchanger and a second heat exchanger, one of the first heat exchanger and the second heat exchanger is connected to the air conditioning water pump, and the other is connected to the fluorine heat exchange system of the mobile air conditioner, including the steps of: S1, turning on the mobile air conditioner, the air conditioning water pump and the air source heat pump unit so that the air source heat pump outputs water at a preset temperature; S2, detecting the air outlet temperature Tc of the mobile air conditioner, and setting the preset air outlet temperature T2 and the air outlet protection temperature Tmin, The mobile air-conditioning system is adjusted as follows: In cooling mode: turn on the above-mentioned fluorine heat exchange system, and adjust the operating frequency of the above-mentioned mobile air-conditioning until Tc-T2 is less than 0.5℃ and remains stable; In heating mode: turn on the above-mentioned fluorine heat exchange system, and adjust the operating frequency of the above-mentioned mobile air-conditioning until T2-Tc is less than 0.5℃ and remains stable; S3, turn off the above-mentioned air-conditioning water pump, and return to execute step S2: In cooling mode: If the mobile air-conditioning is at the lowest operating frequency Pmin, and Tc≤Tmin, turn off the above-mentioned air-conditioning water pump; In heating mode: If the mobile air-conditioning is at the lowest operating frequency Pmin, and Tc≥Tmin, turn off the above-mentioned air-conditioning water pump.

[0007] Optionally, in step S2, adjusting the operating frequency of the above-mentioned mobile air conditioner includes step S21: in cooling mode: the above-mentioned mobile air conditioner always operates at the highest frequency Pmax until Tc-T2 is less than 2°C; then gradually reduces the operating frequency of the above-mentioned mobile air conditioner until Tc-T2 is less than 0.5°C and remains stable; in heating mode: the above-mentioned mobile air conditioner always operates at the highest frequency Pmax until T2-Tc is less than 2°C; then gradually reduces the operating frequency of the above-mentioned mobile air conditioner until T2-Tc is less than 0.5°C and remains stable.

[0008] Optionally, step S2 also includes setting the air outlet threshold temperature T1, and adjusting the operating frequency of the above-mentioned mobile air conditioner includes step S22: in cooling mode, if Tc>T1, execute step S21, otherwise execute the following steps: the above-mentioned mobile air conditioner operates at a preset frequency Ps, and if Tc-T2<2°C, gradually reduce the operating frequency of the above-mentioned mobile air conditioner until Tc-T2<0.5°C and remain stable; if Tc-T2≥2°C, the above-mentioned mobile air conditioner is increased to a maximum frequency Pmax for operation until Tc-T2<2°C; in heating mode, if T1>Tc, execute step S21, otherwise execute the following steps: the above-mentioned mobile air conditioner operates at a preset frequency Ps, and if T2-Tc<2°C, gradually reduce the operating frequency of the above-mentioned mobile air conditioner until T2-Tc<0.5°C and remain stable; if T2-Tc≥2°C, the above-mentioned mobile air conditioner is increased to a maximum frequency Pmax for operation until T2-Tc<2°C.

[0009] Optionally, the operating frequency of the mobile air conditioner is gradually reduced until Tc-T2 < 0.5°C in cooling mode or until T2-Tc < 0.5°C in heating mode and remains stable. If the mobile air conditioner is reduced to the minimum operating frequency Pmin, proceed to step S3.

[0010] Optionally, the maximum frequency Pmax is the maximum operating frequency of the compressor of the mobile air conditioner, and Pmax is less than 60 Hz.

[0011] Optionally, in step S1, the air source heat pump outputs water of a preset temperature Ts, including step S11: the air-conditioning water pump operates at the highest speed, and the air source heat pump unit operates with the minimum / maximum water temperature Ts as the target until the air source heat pump unit outputs water of the preset temperature, and then reduces the operating frequency of the air source heat pump unit and the operating speed of the air-conditioning water pump until the air source heat pump unit can stably output water of the preset temperature.

[0012] Optionally, a water tank is also connected between the air-conditioning water pump and the air-source heat pump unit. When the air-source heat pump unit is turned on, it can provide water of target temperature to the water tank. After the air-source heat pump unit is turned off, the water tank is used to provide water of target temperature to the mobile air conditioner.

[0013] Another object of the present invention is to provide an air source heat pump air conditioning system, which uses the air source heat pump air conditioning system control method as described in any of the above schemes, including an air source heat pump, an air conditioning water pump and a mobile air conditioner connected in sequence to form a loop, and the above-mentioned mobile air conditioner is used to exchange heat with indoor air.

[0014] Optionally, a water tank is further connected between the air-conditioning water pump and the air source heat pump unit.

[0015] Optionally, the water tank is also connected in sequence to a heat exchange water pump, a first solenoid valve and an indoor heat exchanger, and the water tank, the heat exchange water pump, the first solenoid valve and the indoor heat exchanger form a loop.

[0016] Beneficial effects:

[0017] The air source heat pump air conditioning system control method of the present invention first uses the air source heat pump to output water of a preset temperature for the mobile air conditioner. After the mobile air conditioner has been running for a period of time, the air outlet temperature Tc of the mobile air conditioner is detected and compared with the preset air outlet temperature T2. At this time, the mobile air conditioner's own fluorine heat exchange system is turned on, and then the operating frequency of the mobile air conditioner is adjusted until the difference between the air outlet temperature Tc and the preset air outlet temperature T2 is less than 0.5°C. If the mobile air conditioner is at the lowest operating frequency Pmin at this time, and Tc≤Tmin (cooling mode) or Tc≥Tmin (heating mode), the air conditioning water pump is turned off at this time, and only the mobile air conditioner's own fluorine heat exchange system is used for cooling or heating. The air source heat pump air conditioning system control method matches and adjusts the water system and the fluorine heat exchange system of the air source heat pump unit, so that the fluorine heat exchange system and the air source heat pump system complement each other. There is no need to further increase the operating frequency of the mobile air conditioner, that is, there is no need to increase the operating frequency of the compressor. Under the premise of maintaining the cooling or heating capacity, the working noise is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of an air source heat pump air conditioning system provided by a specific embodiment of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a mobile air conditioner provided by a specific embodiment of the present invention.

[0020] In the picture:

[0021] 100, air source heat pump unit; 101, second solenoid valve; 200, air conditioning water pump; 300, mobile air conditioner; 301, first heat exchanger; 302, second heat exchanger; 303, fan; 304, compressor; 400, water tank; 500, heat exchange water pump; 600, first solenoid valve; 700, indoor heat exchanger. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0023] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0025] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0026] Please refer to Figure 1 and Figure 2 This embodiment provides an air-source heat pump air conditioning system, comprising an air-source heat pump, an air conditioning water pump 200, and a mobile air conditioner 300, which are sequentially connected to form a circuit. The mobile air conditioner 300 is configured to exchange heat with indoor air. Specifically, the mobile air conditioner 300 includes a first heat exchanger 301 and a second heat exchanger 302. One of the first heat exchanger 301 and the second heat exchanger 302 is connected to the air conditioning water pump 200, and the other is connected to the fluorine circuit heat exchange system of the mobile air conditioner 300.

[0027] The air source heat pump air conditioning system provides cold water or hot water to the mobile air conditioner 300 through the air source heat pump unit 100, thereby using the mobile air conditioner 300 to provide cooling or heating for the indoor environment, adjusting the indoor ambient temperature, reducing the high-frequency operation of the compressor 304 of the mobile air conditioner 300 due to insufficient cooling or heating of the fluorine circuit refrigerant, and reducing the noise of the compressor 304.

[0028] Furthermore, the mobile air conditioner 300 is controlled by an electronic control system with a WiFi (wireless network communication) module and is connected to the Internet, and the air source heat pump unit 100 is controlled by a controller with a WiFi module and is connected to the Internet, so that the user can perform remote control online, which is simple and convenient to operate.

[0029] The fluorine-circuit heat exchange system in this embodiment is a commonly used fluorine-circuit system, including the above-mentioned compressor 304, throttling device, and heat exchanger (one of the first heat exchanger 301 or the second heat exchanger 302 is a heat exchanger of the fluorine-circuit heat exchange system, and the other is the water coil of the air source heat pump unit 100), and the heat exchanger and the water coil share an air duct and fan 303. The air blown out by the fan 303 undergoes two heat exchanges in the first heat exchanger 301 and the second heat exchanger 302, which can further reduce the cooling air outlet temperature or increase the heating air outlet temperature.

[0030] Please continue to refer to Figure 1 Optionally, a water tank 400 is further connected between the air conditioning water pump 200 and the air source heat pump unit 100. The water tank 400 not only provides a water replenishment function for the air source heat pump unit 100 and the mobile air conditioner 300 to prevent water shortage, but also allows the air source heat pump unit 100 to provide sufficient hot water or cold water to the water tank 400. When the air source heat pump unit 100 is shut down, the water tank 400 can continue to provide cold water or hot water to the mobile air conditioner 300, allowing the mobile air conditioner 300 to continue operating.

[0031] As a preferred embodiment, the water tank 400 is further connected in sequence to a heat exchange water pump 500, a first solenoid valve 600, and an indoor heat exchanger 700. The water tank 400, the heat exchange water pump 500, the first solenoid valve 600, and the indoor heat exchanger 700 form a circuit. Specifically, the indoor heat exchanger 700 is a floor heating pipeline, and the air source heat pump unit 100 provides hot or cold water to the water tank 400, so that the floor heating pipeline provides cooling or heating for the room, thereby regulating the indoor ambient temperature.

[0032] In the air-source heat pump air conditioning system of this embodiment, a second solenoid valve 101 is further provided between the mobile air conditioner 300 and the air conditioning water pump 200, and between the air conditioning water pump 200 and the air-source heat pump unit 100. These valves are used to control the connection of the water system between the mobile air conditioner 300 and the air-source heat pump unit 100 or the water tank 400. Both the first solenoid valve 600 and the second solenoid valve 101 are solenoid valves with the advantages of being compact, easy to install, low-cost, and fast in operation. They can also be controlled through an internet connection and work in conjunction with the aforementioned WiFi module, making control even more convenient and rapid.

[0033] In this embodiment, the mobile air conditioner 300 includes a first heat exchanger 301 and a second heat exchanger 302. One of the first heat exchanger 301 and the second heat exchanger 302 is connected to the air conditioning water pump 200, and the other is connected to the fluorine heat exchange system. Specifically, the first heat exchanger 301 is connected to the air conditioning water pump 200 and is a water coil heat exchanger. The second heat exchanger 302 is a heat exchanger of the fluorine heat exchange system. The first heat exchanger 301 and the second heat exchanger 302 are respectively arranged at the front and rear ends of the fan 303. The fan 303 can blow the cooling or heat generated by the first heat exchanger 301 and the second heat exchanger 302 to the air outlet to adjust the temperature of the room where the mobile air conditioner 300 is located. The positions of the heat exchanger connected to the air conditioning water pump 200 and the heat exchanger connected to the fluorine heat exchange system can be reversed, and will not be further described here.

[0034] In other optional embodiments, the mobile air conditioner 300 is not limited to an air conditioner, but can also be a drying device for drying clothes, and its control method is the same as the control method of the mobile air conditioner 300 described above. The indoor heat exchanger 700 can also be the water system inside the dining table, using the water in the water tank 400 to keep the food on the table warm. Furthermore, the air source heat pump unit 100 can be designed as a three-pipe system, providing simultaneous heating and cooling, heating the room while cooling the kitchen or other special areas. The water path of the mobile air conditioner 300 is separated from the heating water path. By independently controlling the output mode of the mobile air conditioner 300, normal heating or cooling can be achieved, and the mobile air conditioner 300 can also achieve a local output reverse mode, which has a wider range of applications and greatly improved user comfort.

[0035] This embodiment also provides an air source heat pump air conditioning system control method, which matches and adjusts the air source heat pump unit 100 and the mobile air conditioner 300's own fluorine path heat exchange system, so that the above-mentioned mobile air conditioner 300 can reduce the operating frequency of its own compressor 304 when in use, thereby reducing the noise generated by the compressor 304, and will not reduce the original cooling and heat output capabilities, thereby ensuring the use requirements of cooling or heating.

[0036] The air source heat pump air conditioning system uses the air source heat pump air conditioning system control method, in conjunction with the air source heat pump unit 100 and the fluorine heat exchange system, and through the heat exchanger and compressor 304 located at the front and rear ends of the fan 303, the air outlet temperature and the water temperature of the water system are linked to control, thereby achieving efficient cooling and heating while also having low noise. The air source heat pump air conditioning system is combined with the pre-buried plumbing pipes and valve joints during the early stage of house decoration. The water pipes of the mobile air conditioner 300 can be connected to the water system at the water pipe joint, thereby achieving the purpose of efficient cooling and heating of the house by the mobile air conditioner 300. Compared with existing kitchen air conditioners or cold-heating products, the air source heat pump air conditioning system has a higher output capacity, controllable noise level, and can switch between usage scenarios and usage modes according to user needs. It has the advantages of being easy to carry, easy to move, and comfortable to use.

[0037] Specifically, in the air source heat pump air conditioning system control method, its air source heat pump air conditioning system at least includes the above-mentioned air source heat pump air conditioning system, the above-mentioned mobile air conditioner 300 includes a first heat exchanger 301 and a second heat exchanger 302, one of the above-mentioned first heat exchanger 301 and the above-mentioned second heat exchanger 302 is connected to the above-mentioned air conditioning water pump 200, and the other is connected to the fluorine path heat exchange system, including the steps of: S1, turning on the above-mentioned mobile air conditioner 300, the above-mentioned air conditioning water pump 200 and the above-mentioned air source heat pump unit 100, so that the above-mentioned air source heat pump outputs water at a preset temperature; S2, by detecting the outlet temperature Tc of the above-mentioned mobile air conditioner 300, and setting the preset outlet temperature T2 and the air outlet protection temperature Tmin, the above-mentioned mobile air conditioner The adjustment system 300 is adjusted as follows: In cooling mode: turn on the above-mentioned fluorine heat exchange system, and adjust the operating frequency of the above-mentioned mobile air conditioner 300 until Tc-T2 is less than 0.5℃ and remains stable; in heating mode: turn on the above-mentioned fluorine heat exchange system, and adjust the operating frequency of the above-mentioned mobile air conditioner 300 until T2-Tc is less than 0.5℃ and remains stable; S3, turn off the above-mentioned air-conditioning water pump 200, and return to execute step S2: In cooling mode: if the mobile air conditioner 300 is at the lowest operating frequency Pmin, and Tc≤Tmin, turn off the above-mentioned air-conditioning water pump 200; in heating mode: if the mobile air conditioner 300 is at the lowest operating frequency Pmin, and Tc≥Tmin, turn off the above-mentioned air-conditioning water pump 200.

[0038] The air source heat pump air conditioning system control method in this embodiment first uses the air source heat pump to output water of a preset temperature for the mobile air conditioner 300. After the mobile air conditioner 300 has been running for a period of time, the air outlet temperature Tc of the mobile air conditioner 300 is detected and compared with the set preset air outlet temperature T2. At this time, the mobile air conditioner 300's own fluorine path heat exchange system is turned on, and then the operating frequency of the mobile air conditioner 300 is adjusted until the difference between the air outlet temperature Tc and the preset air outlet temperature T2 is less than 0.5°C. If the mobile air conditioner 300 is at the lowest operating frequency Pmin at this time, and Tc≤Tmin (cooling mode) or Tc≥Tmin (heating mode), the above-mentioned air conditioning water pump 200 is turned off at this time, and only the mobile air conditioner 300's own fluorine path heat exchange system is used for cooling or heating. The air source heat pump air conditioning system control method in this embodiment matches and adjusts the water system and the fluorine heat exchange system of the air source heat pump unit 100, so that the fluorine heat exchange system and the air source heat pump system complement each other. There is no need to further increase the operating frequency of the mobile air conditioner 300, that is, there is no need to increase the operating frequency of the compressor 304. While maintaining the cooling or heating capacity, the working noise is reduced.

[0039] In step S2 of this embodiment, when detecting the air outlet temperature Tc of the mobile air conditioner 300, an interval detection method is adopted, that is, the air outlet temperature Tc is detected every t minutes. Of course, a continuous online detection method can also be adopted, which is not repeated in this embodiment.

[0040] Optionally, in step S2, adjusting the operating frequency of the mobile air conditioner 300 includes step S21: in cooling mode: the mobile air conditioner 300 is continuously operated at the maximum frequency Pmax until Tc-T2 is less than 2°C; then the operating frequency of the mobile air conditioner 300 is gradually reduced until Tc-T2 is less than 0.5°C and remains stable; in heating mode: the mobile air conditioner 300 is continuously operated at the maximum frequency Pmax until T2-Tc is less than 2°C; then the operating frequency of the mobile air conditioner 300 is gradually reduced until T2-Tc is less than 0.5°C and remains stable. That is, when the fluorine circuit heat exchange system is activated, the mobile air conditioner 300 first operates at the maximum frequency Pmax to ensure that the mobile air conditioner 300 can quickly increase the required cooling or heating capacity to the maximum, thereby quickly adjusting the air outlet temperature and ensuring that the indoor ambient temperature reaches the set temperature as soon as possible.

[0041] Furthermore, the aforementioned maximum frequency Pmax is the maximum operating frequency of the compressor 304 of the mobile air conditioner 300, and Pmax is less than 60 Hz. Pmax is determined based on the noise characteristics of the compressor 304 of the mobile air conditioner 300 and the corresponding system. In this embodiment, Pmax < 60 Hz is selected. This is the maximum operating frequency that can be achieved while meeting the cooling or heating requirements of the mobile air conditioner 300 and ensuring that the noise level of the compressor 304 does not exceed the user's tolerance threshold. Those skilled in the art can design an adaptive frequency based on the model, power, and specific usage environment of the mobile air conditioner 300, and this will not be discussed in detail in this embodiment.

[0042] Optionally, step S2 further includes setting the outlet threshold temperature T1, and adjusting the operating frequency of the mobile air conditioner 300 includes step S22: in cooling mode, if Tc>T1, execute step S21, otherwise execute the following steps: the mobile air conditioner 300 operates at a preset frequency Ps, if Tc-T2<2°C, gradually reduce the operating frequency of the mobile air conditioner 300 until Tc-T2<0.5°C and remains stable, if Tc-T2≥2°C, the mobile air conditioner 300 The frequency is increased to the maximum frequency Pmax and operated until Tc-T2 is less than 2°C; in heating mode, if T1>Tc, execute step S21, otherwise execute the following steps: the above-mentioned mobile air conditioner 300 operates at the preset frequency Ps, if T2-Tc<2°C, gradually reduce the operating frequency of the above-mentioned mobile air conditioner 300 until T2-Tc<0.5°C and remain stable, if T2-Tc≥2°C, the above-mentioned mobile air conditioner 300 is increased to the maximum frequency Pmax and operated until T2-Tc<2°C.

[0043] The following explanation uses the cooling mode as an example. When Tc < T1, the outlet air temperature has already met the minimum cooling requirement, so there's no need to increase the operating frequency of the mobile air conditioner 300 to its maximum. Instead, it can operate at the preset frequency Ps. Then, comparing Tc and T2, if Tc - T2 < 2°C, the outlet air temperature Tc has already met the requirement. The operating frequency of the mobile air conditioner 300 can be gradually reduced until Tc - T2 < 0.5°C and remains stable. If Tc - T2 ≥ 2°C, the operating frequency of the mobile air conditioner 300 cannot meet the usage requirements. In this case, the mobile air conditioner 300 needs to be increased to its maximum frequency Pmax until Tc - T2 < 2°C and the above steps are repeated. The adjustment steps in the heating mode are the same as those in the cooling mode and will not be repeated here. This configuration of the operating frequency adjustment steps for the mobile air conditioner 300 not only allows for rapid adjustment of the outlet air temperature while meeting cooling or heating requirements, but also reduces energy consumption and operating noise during the adjustment process, achieving both energy conservation and noise reduction.

[0044] In cooling mode, the air outlet threshold temperature T1 is greater than 15°C, the preset air outlet temperature T2 is less than 10°C, and the air outlet protection temperature Tmin is less than 5°C. The above temperature values ​​are selected adaptively by those skilled in the art based on the working characteristics, usage environment and usage requirements of the mobile air conditioner 300, and will not be repeated here.

[0045] Optionally, the operating frequency of the mobile air conditioner 300 is gradually reduced until Tc-T2 is less than 0.5°C in cooling mode or until T2-Tc is less than 0.5°C in heating mode and remains stable. If the mobile air conditioner 300 is reduced to the minimum operating frequency Pmin, the process proceeds to step S3. In the air source heat pump air conditioning system control method of this embodiment, if the difference between the air outlet temperature Tc and the preset air outlet temperature T2 is maintained at no more than 0.5°C during the process of reducing the operating frequency of the mobile air conditioner 300, and the operating frequency of the compressor 304 has been reduced to the minimum, it means that the cooling or heating capacity provided by the fluorine heat exchange system is sufficient to meet the operation of the mobile air conditioner 300, and there is no need to supplement the water system of the air source heat pump unit 100. At this time, the air source heat pump unit 100 is shut down to achieve the purpose of energy saving and emission reduction.

[0046] As a preferred embodiment, in step S1, the air source heat pump outputs water at a preset temperature Ts, including step S11: the air conditioning water pump 200 operates at the highest speed, and the air source heat pump unit 100 operates with the minimum / maximum water temperature Ts as the target until the air source heat pump unit 100 outputs water at the preset temperature, and then reduces the operating frequency of the air source heat pump unit 100 and the operating speed of the air conditioning water pump 200 until the air source heat pump unit 100 can stably output water at the preset temperature. In this embodiment, the air source heat pump first outputs water at the minimum / maximum water temperature Ts at its highest output capacity to ensure that the water entering the mobile air conditioner 300 at startup can meet the cooling or heating requirements, and then gradually reduces the operating frequency of the air source heat pump unit 100 and the operating speed of the air conditioning water pump 200 to ensure that the preset temperature water can be continuously output, thereby ensuring the safe, stable, and efficient and energy-saving operation of the mobile air conditioner 300.

[0047] In this embodiment, a water tank 400 is also connected between the air-conditioning water pump 200 and the air-source heat pump unit 100. When the air-source heat pump unit 100 is turned on, it can provide water of the target temperature to the water tank 400. After the air-source heat pump unit 100 is turned off, the water tank 400 is used to provide water of the target temperature to the mobile air conditioner 300. Due to the provision of the water tank 400, when the water system of the air source heat pump unit 100 is not connected to other heat exchange components, only the terminal of the mobile air conditioner 300 is turned on, and the air source heat pump unit 100 supplies water to the mobile air conditioner 300 on the one hand, and to the water tank 400 on the other hand, until the water temperature of the water tank 400 reaches the set minimum or maximum water temperature, the air source heat pump unit 100 can be shut down and the water tank 400 provides cold water or hot water to the mobile air conditioner 300; after a period of use, the temperature of the water tank 400 changes, resulting in the air outlet temperature Tc of the mobile air conditioner 300 still unable to approach or reach T2, at this time the air source heat pump unit 100 starts to run, provides the required water to the mobile air conditioner 300, and adjusts the temperature of the water tank 400 to the target water temperature. The setting of the water tank 400 not only provides a water replenishment function for the air source heat pump unit 100 and the mobile air conditioner 300 to prevent water shortage, but also can use the air source heat pump unit 100 to provide sufficient hot water or cold water for the water tank 400. When the air source heat pump unit 100 is shut down, the water tank 400 can continue to provide cold water or hot water for the mobile air conditioner 300, so that the mobile air conditioner 300 continues to work, so that the mobile air conditioner 300 can continue to operate efficiently and reduce energy consumption.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A control method for an air source heat pump air conditioning system, wherein the air source heat pump air conditioning system comprises at least an air source heat pump unit (100), an air conditioning water pump (200), and a mobile air conditioner (300) connected in sequence, wherein the mobile air conditioner (300) comprises a first heat exchanger (301) and a second heat exchanger (302), wherein one of the first heat exchanger (301) and the second heat exchanger (302) is connected to the air conditioning water pump (200), and the other is connected to a fluorine heat exchange system of the mobile air conditioner (300), characterized in that: Including steps: S1, turning on the mobile air conditioner (300), the air conditioning water pump (200), and the air source heat pump unit (100), so that the air source heat pump outputs water at a preset temperature; S2. By detecting the air outlet temperature Tc of the mobile air conditioner (300), and setting a preset air outlet temperature T2 and an air outlet protection temperature Tmin, the mobile air conditioner (300) system is adjusted as follows: In cooling mode: starting the fluorine heat exchange system and adjusting the operating frequency of the mobile air conditioner (300) until Tc-T2 is less than 0.5°C and remains stable; In heating mode: starting the fluorine heat exchange system and adjusting the operating frequency of the mobile air conditioner (300) until T2-Tc is less than 0.5°C and remains stable; S3. Turn off the air conditioning water pump (200) and return to step S2: In cooling mode: if the mobile air conditioner (300) is at the lowest operating frequency Pmin and Tc≤Tmin, the air conditioner water pump (200) is turned off; In the heating mode: if the mobile air conditioner (300) is at the lowest operating frequency Pmin, and Tc≥Tmin, the air conditioning water pump (200) is turned off.

2. The air source heat pump air conditioning system control method according to claim 1, characterized in that: In step S2, adjusting the operating frequency of the mobile air conditioner (300) includes step S21: In cooling mode: the mobile air conditioner (300) always operates at the highest frequency Pmax until Tc-T2 < 2°C; then the operating frequency of the mobile air conditioner (300) is gradually reduced until Tc-T2 < 0.5°C and remains stable; In the heating mode: the mobile air conditioner (300) always operates at the highest frequency Pmax until T2-Tc < 2°C; then the operating frequency of the mobile air conditioner (300) is gradually reduced until T2-Tc < 0.5°C and remains stable.

3. The air source heat pump air conditioning system control method according to claim 2, characterized in that: Step S2 also includes setting the air outlet threshold temperature T1, and adjusting the operating frequency of the mobile air conditioner (300) includes step S22: In cooling mode, if Tc>T1, step S21 is executed, otherwise the following steps are executed: the mobile air conditioner (300) operates at a preset frequency Ps, and if Tc-T2<2°C, the operating frequency of the mobile air conditioner (300) is gradually reduced until Tc-T2<0.5°C and remains stable, and if Tc-T2≥2°C, the mobile air conditioner (300) is increased to a maximum frequency Pmax and operated until Tc-T2<2°C; In heating mode, if T1>Tc, step S21 is executed, otherwise the following steps are executed: the mobile air conditioner (300) operates at a preset frequency Ps, and if T2-Tc<2°C, the operating frequency of the mobile air conditioner (300) is gradually reduced until T2-Tc<0.5°C and remains stable, and if T2-Tc≥2°C, the mobile air conditioner (300) is increased to a maximum frequency Pmax and operated until T2-Tc<2°C.

4. The air source heat pump air conditioning system control method according to claim 3, characterized in that: The operating frequency of the mobile air conditioner (300) is gradually reduced until Tc-T2 < 0.5°C in the cooling mode or until T2-Tc < 0.5°C in the heating mode and remains stable. If the mobile air conditioner (300) is reduced to the minimum operating frequency Pmin, the process proceeds to step S3.

5. The air source heat pump air conditioning system control method according to claim 2, characterized in that: The maximum frequency Pmax is the maximum operating frequency of the compressor (304) of the mobile air conditioner (300), and Pmax is less than 60 Hz.

6. The air source heat pump air conditioning system control method according to any one of claims 1 to 5, characterized in that: In step S1, the air source heat pump outputs water at a preset temperature Ts, including step S11: The air conditioning water pump (200) operates at the highest speed, and the air source heat pump unit (100) operates with the minimum / maximum water temperature Ts as the target until the air source heat pump unit (100) outputs water at a preset temperature, and then reduces the operating frequency of the air source heat pump unit (100) and the operating speed of the air conditioning water pump (200) until the air source heat pump unit (100) can stably output water at the preset temperature.

7. The air source heat pump air conditioning system control method according to any one of claims 1 to 5, characterized in that: A water tank (400) is also provided between the air-conditioning water pump (200) and the air-source heat pump unit (100). When the air-source heat pump unit (100) is turned on, water at a target temperature can be provided to the water tank (400). When the air-source heat pump unit (100) is turned off, the water tank (400) is used to provide water at a target temperature to the mobile air conditioner (300).

8. Air source heat pump air conditioning system, characterized in that, A method for controlling an air source heat pump air conditioning system according to any one of claims 1 to 7 comprises an air source heat pump unit (100), an air conditioning water pump (200), and a mobile air conditioner (300) which are sequentially connected to form a loop, wherein the mobile air conditioner (300) is used to exchange heat with indoor air.

9. The air source heat pump air conditioning system according to claim 8, characterized in that: A water tank (400) is also provided between the air-conditioning water pump (200) and the air-source heat pump unit (100).

10. The air source heat pump air conditioning system according to claim 9, characterized in that: The water tank (400) is also connected in sequence to a heat exchange water pump (500), a first solenoid valve (600) and an indoor heat exchanger (700), and the water tank (400), the heat exchange water pump (500), the first solenoid valve (600) and the indoor heat exchanger (700) form a loop.

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