Radiation air-conditioning heat pump host and radiation air-conditioning system

Abstract

The utility model discloses a radiation air-conditioning heat pump host and a radiation air-conditioning system, which comprise a compressor, a main heat exchanger, a liquid storage tank, a cooling and heating circulation switching device, a plurality of pipelines and a heat recovery device, and in the refrigeration mode, the heat recovery device recovers heat of heat dissipation so as to prepare hot water. According to the technical scheme, the working state of the compressor, the switching logic of the four-way valve and the electric three-way valve and the opening degree of the electronic expansion valve can be adjusted, and therefore precise control over the refrigerant circulation path and flow is achieved. By means of the control strategy, the system can flexibly adjust the water supply temperature according to actual requirements, and the traditional 7 / 12 DEG C low-temperature water is expanded to the 16-25 DEG C cold water range. By increasing the water supply temperature, the system can effectively avoid the condensation phenomenon, and therefore energy waste and maintenance cost caused by condensation are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning system technical field, especially relates to a radiation air conditioning heat pump host computer and radiation air conditioning system. BACKGROUND

[0002] Radiation air conditioning system, with its outstanding comfort, high operating efficiency and significant energy saving effect, is gradually winning more and more air conditioning users' favor, especially in the high-end air conditioning system market occupies a place. The system is usually applied to the household five constant air conditioning system, through the capillary or radiation plate and other terminal devices, realize the constant temperature control of building top surface, ground and wall, effectively solve the problem of wall constant temperature. At the same time, combined with the new fan or small wind volume fan disc, not only can dehumidify, but also can adjust the indoor air temperature to the comfort range required by the user.

[0003] The existing radiation air conditioning system faces a technical problem to be solved under the summer refrigeration condition - condensation. Specifically, the existing air conditioning outdoor unit heat pump unit is usually maintained at 7 / 12℃ low temperature water state when refrigerating in summer. If the water supply adjustment and temperature control system cannot be accurately adjusted and timely feedback, it is easy to cause condensation. Condensation will make the wall and ceiling surface condense water vapor droplets, and then cause mildew, which will seriously damage the decoration surface and furniture. This problem is particularly prominent in the hot and humid southern region in summer, making it difficult to achieve the user's expectations for the operation effect of the radiation air conditioning system.

[0004] At present, some systems add secondary water mixing equipment to ensure that the water supply entering the radiation heat exchange device is higher than the dew point temperature of the local area, but this solution increases investment and leads to a large amount of energy waste. In the context of advocating carbon neutralization, designing a heat pump host device dedicated to radiation air conditioning system can not only solve the condensation problem, but also meet the energy saving and emission reduction effect, which is a technical problem to be solved by the technical personnel in the field. CONTENT OF THE UTILITY MODEL

[0005] According to the embodiment of the utility model, in order to solve the above-mentioned deficiencies in the prior art, a radiation air conditioning heat pump host computer is provided, which supports the refrigeration mode, heating mode and hot water mode of radiation air conditioning, and contains a compressor, a main heat exchanger, a liquid storage tank, a cold and warm cycle switching device and a plurality of pipelines, characterized in that it further contains a heat recovery device, the heat recovery device contains an adjustable flow electric three-way valve, and the heat recovery device recovers the heat of heat dissipation to produce hot water in the refrigeration mode.

[0006] Preferably, the cold and warm cycle switching device is a four-way valve, and is connected in the following manner:

[0007] Electric three-way valve, the electric three-way valve outlet pipe and the exhaust inlet of the four-way valve are connected;

[0008] a main heat exchanger connected to the first and second outlet ports of the four-way valve;

[0009] a gas-liquid separator connected to the third outlet port of the four-way valve.

[0010] Preferably, the main heat exchanger comprises a refrigeration condensing heat exchanger and a refrigeration evaporator, and the first and second outlet ports of the four-way valve are connected to the gas collecting pipe of the refrigeration condensing heat exchanger and the outlet port of the refrigeration evaporator, respectively.

[0011] Preferably, the refrigeration condensing heat exchanger is a fin heat exchanger.

[0012] Preferably, the refrigeration evaporator is a plate heat exchanger.

[0013] Preferably, the refrigeration evaporator liquid inlet is connected to a liquid storage tank, and an electronic expansion valve is arranged on the pipeline, and the two ends of the electronic expansion valve are connected to the liquid inlet of the refrigeration evaporator and the outlet pipe of the liquid storage tank, respectively.

[0014] Preferably, the heat recovery device further comprises a heat recovery heat exchanger, and the inlet pipe of the heat recovery heat exchanger is connected to the outlet port of the electric three-way valve.

[0015] Preferably, the heat recovery heat exchanger is a waste heat recovery plate heat exchanger.

[0016] Preferably, the outlet pipe of the heat recovery heat exchanger is connected to the inlet of the liquid storage tank, and a one-way valve is arranged on the pipeline between the heat recovery heat exchanger and the liquid storage tank.

[0017] According to the radiation air conditioner heat pump host of the first embodiment of the present application, by designing the internal pipeline connection mode of the host, the working state of the compressor, the switching logic of the four-way valve and the electric three-way valve, and the opening of the electronic expansion valve can be adjusted, so as to realize accurate control of the refrigerant circulation path and flow. This control strategy enables the system to flexibly adjust the water supply temperature according to actual needs, expanding from the traditional 7 / 12℃ low-temperature water to the cold water range of 16-25℃. By increasing the water supply temperature, the system can effectively avoid the occurrence of condensation, thereby reducing energy waste and maintenance costs caused by condensation. At the same time, by accurately controlling the circulation and flow of the refrigerant, the system can meet the refrigeration demand while reducing unnecessary energy consumption, thereby improving the energy efficiency ratio.

[0018] The radiation air conditioning system of the second embodiment of the present application comprises a radiation end assembly, a sensor, a controller, and the radiation air conditioner heat pump host of the first embodiment.

[0019] In the refrigeration process, part of the high-temperature refrigerant gas is guided to the heat recovery heat exchanger to produce domestic hot water or reheat hot water, realizing secondary utilization of energy, reducing energy waste, and further realizing the goal of carbon neutralization.

[0020] It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a refrigeration mode principle schematic diagram of a radiation air conditioner heat pump host according to an embodiment of the present application.

[0022] Figure 2 It is a heating mode principle schematic diagram of a radiation air conditioner heat pump host according to an embodiment of the present application.

[0023] Figure 3 It is a dehumidification and reheating mode principle schematic diagram of a radiation air conditioner heat pump host according to an embodiment of the present application.

[0024] Figure 4 It is a hot water mode principle schematic diagram of a radiation air conditioner heat pump host according to an embodiment of the present application.

[0025] Figure 5 It is a heating and hot water mode principle schematic diagram of a radiation air conditioner heat pump host according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, which further illustrate the present application.

[0027] Firstly, the radiation air conditioner heat pump host according to the embodiments of the present application will be described in combination with Figures 1-5 The radiation air conditioner heat pump host according to the embodiments of the present application is widely applied in indoor temperature and humidity control scenes. In the present embodiment, a household radiation air conditioner is taken as an example for illustration.

[0028] As shown in Figures 1-5 The radiation air conditioner heat pump host of the embodiments of the present application is used to support the refrigeration mode, the heating mode, the dehumidification mode and the hot water mode of the radiation air conditioner, and contains a compressor, a main heat exchanger 2, a liquid storage tank, a cold and warm cycle switching device 1 and a plurality of pipelines, and further contains a heat recovery device 3.

[0029] Specifically, as shown in Figures 1-5As shown, the heat recovery device 3 includes an adjustable flow electric three-way valve 31. In the cooling mode, the heat recovery device 3 recovers the heat dissipated to produce hot water. In the prior art, in the cooling mode, the system usually discharges heat to the environment. However, through the heat recovery device 3, this part of heat can be effectively recovered and used to produce hot water, thereby realizing the reuse of energy. The use of an adjustable flow electric three-way valve 31 allows the heat recovery process to be flexibly adjusted according to actual needs. The system can adjust the amount of heat recovery according to the change of hot water demand, thereby ensuring the stability and efficiency of the system.

[0030] Preferably, the cold and warm cycle switching device 1 is a four-way valve, and is connected in the following manner:

[0031] An electric three-way valve 31, the outlet of the electric three-way valve 31 is connected to the exhaust inlet of the four-way valve;

[0032] A main heat exchanger 2, the main heat exchanger 2 is connected to the first and second outlets of the four-way valve;

[0033] A gas-liquid separator, the gas-liquid separator is connected to the third outlet of the four-way valve.

[0034] The four-way valve can flexibly switch the flow direction of the refrigerant, realizing the rapid conversion of the cooling and heating modes. Through the combination of the electric three-way valve 31 and the four-way valve, the circulation path of the refrigerant can be more accurately controlled, improving the operating efficiency and flexibility of the system.

[0035] Preferably, the main heat exchanger 2 includes a refrigeration condenser heat exchanger 21 and a refrigeration evaporator 22, and the first and second outlets of the four-way valve are respectively connected to the gas collecting pipe of the refrigeration condenser heat exchanger 21 and the outlet of the refrigeration evaporator 22. Dividing the main heat exchanger 2 into the refrigeration condenser heat exchanger 21 and the refrigeration evaporator 22 can optimize the performance of these two components respectively, improving the heat exchange efficiency. At the same time, this design makes the system more efficient in cooling and heating modes, improving the overall energy efficiency.

[0036] Preferably, the refrigeration condenser heat exchanger 21 is a fin heat exchanger. The fin heat exchanger has a large heat exchange area and high heat exchange efficiency, and can quickly transfer the heat of the refrigerant to the environment or the recovery device. Using a fin heat exchanger as a refrigeration condenser can further improve the refrigeration effect and heat recovery efficiency of the system.

[0037] Preferably, the refrigeration evaporator 22 is a plate heat exchanger. The plate heat exchanger has the advantages of compact structure and high heat exchange efficiency, and is suitable for heat exchange between refrigerant and coolant. Using a plate heat exchanger as a refrigeration evaporator 22 can improve the heat exchange efficiency and stability of the system, while reducing the floor area.

[0038] Preferably, the refrigeration evaporator 22 inlet pipe is connected to the liquid storage tank, and an electronic expansion valve is arranged on the pipe, and the two ends of the electronic expansion valve are connected to the refrigeration evaporator 22 inlet and the liquid storage tank outlet pipe respectively. By accurately controlling the flow of refrigerant through the electronic expansion valve, the refrigerant pressure at the inlet of the refrigeration evaporator 22 can be accurately adjusted, thereby improving the refrigeration effect and energy efficiency of the system. At the same time, the liquid storage tank can store excess refrigerant, ensuring that the system operates stably while having sufficient refrigerant reserves.

[0039] Preferably, the heat recovery device 3 further comprises a heat recovery heat exchanger 32, and the inlet pipe of the heat recovery heat exchanger 32 is connected to the outlet pipe of the electric three-way valve 31. The heat recovery heat exchanger 32 can recover waste heat generated in the refrigeration cycle and use it to produce hot water or other purposes. By adding the heat recovery heat exchanger 32, the energy utilization efficiency of the system can be further improved, and energy consumption and environmental pollution can be reduced.

[0040] Preferably, the heat recovery heat exchanger 32 is a waste heat recovery plate heat exchanger. The waste heat recovery plate heat exchanger has the advantages of compact structure and high heat exchange efficiency, and is suitable for recovering heat from low-temperature heat sources. Using a waste heat recovery plate heat exchanger as the heat recovery heat exchanger 32 can further improve the heat recovery efficiency and stability of the system.

[0041] Preferably, the outlet pipe of the heat recovery heat exchanger 32 is connected to the inlet of the liquid storage tank, and a one-way valve is arranged on the pipe between the heat recovery heat exchanger 32 and the liquid storage tank. The one-way valve can prevent the backflow of refrigerant during heat recovery, ensuring the stable operation of the system. At the same time, connecting the outlet pipe of the heat recovery heat exchanger 32 to the inlet of the liquid storage tank can make full use of the recovered heat to heat the refrigerant in the liquid storage tank, improving the overall energy efficiency of the system.

[0042] The condensation problem is mainly caused by the fact that the water temperature is too low, causing water vapor in the air to condense into water droplets on the surface of the radiation heat exchange device. When the heat recovery system is used, the technology can recover part of the waste heat generated during the refrigeration process and use it to increase the water temperature. When the water temperature is higher than the local dew point temperature, the water vapor in the air will not condense into water droplets on the surface of the radiation heat exchange device, thereby effectively avoiding the occurrence of the condensation problem. Therefore, the heat recovery system not only improves the energy utilization efficiency, but also solves the condensation problem, improving the overall performance and user experience of the system.

[0043] The above, with reference to Figures 1-5The radiation air conditioner heat pump host according to the embodiment of the utility model is described, through design special refrigeration system logic and parameter assignment, this technology can adjust the working state of compressor, the switching logic of four-way valve and electric three-way valve 31 and the opening of electronic expansion valve, thereby realizing accurate control to refrigerant circulation path and flow. This control strategy makes the system can flexibly adjust the water supply temperature according to actual demand, expands from the traditional 7 / 12 DEG C low temperature water to 16-25 DEG C cold water range. The specific principle under each mode is shown in the figure, by improving the water supply temperature, the system can effectively avoid the occurrence of condensation phenomenon, thereby reducing the energy waste and maintenance cost caused by condensation. At the same time, by accurately controlling the circulation and flow of refrigerant, the system can meet the refrigeration demand while reducing unnecessary energy consumption, thereby improving the energy efficiency ratio. Figures 1-5

[0044] The radiation air conditioner system of the second embodiment of the utility model is characterized in that it comprises a radiation terminal assembly, a sensor, a controller, and the radiation air conditioner system further comprises the radiation air conditioner heat pump host of the first embodiment.

[0045] In the refrigeration process, part of the high-temperature refrigerant gas is guided to the heat recovery heat exchanger 32 to produce domestic hot water or reheated hot water, realizing secondary utilization of energy and reducing energy waste, further achieving the goal of energy saving and emission reduction.

[0046] In the description of the utility model, it should be explained that, unless otherwise specified, the meaning of "multiple" is two or more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0047] It should be noted that, in this specification, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0048] ​Although the content of the utility model has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A radiation air-conditioning heat pump main unit supporting a cooling mode, a heating mode, a dehumidifying mode and a hot water mode of a radiation air-conditioning, comprising a compressor, a main heat exchanger, a liquid storage tank, a cold and warm cycle switching device and a plurality of pipelines, characterized in that, The heat recovery device comprises an electrically adjustable flow three-way valve, and recovers heat dissipated to produce hot water in the refrigeration mode.

2. The radiation air-conditioning and heat pump main unit as claimed in claim 1, wherein The cold and warm cycle switching device is a four-way valve, and is connected in the following manner: An electrically adjustable flow three-way valve, the outlet of which is connected to the gas inlet of the four-way valve; A main heat exchanger, which is connected to the first and second outlets of the four-way valve; A gas-liquid separator, which is connected to the third outlet of the four-way valve.

3. The radiation air-conditioning and heat pump main unit as claimed in claim 2, wherein The main heat exchanger comprises a refrigeration condenser heat exchanger and a refrigeration evaporator, and the first and second outlets of the four-way valve are respectively connected to the gas collecting pipe of the refrigeration condenser heat exchanger and the outlet of the refrigeration evaporator.

4. The radiation air-conditioning and heat pump main unit as claimed in claim 3, wherein The refrigeration condenser heat exchanger is a fin heat exchanger.

5. The radiation air-conditioning and heat pump main unit as claimed in claim 3, wherein The refrigeration evaporator is a plate heat exchanger.

6. The radiation air-conditioning and heat pump main unit as claimed in claim 5, wherein The refrigeration evaporator inlet is connected to a liquid storage tank via a pipeline, and an electronic expansion valve is arranged on the pipeline, and the two ends of the electronic expansion valve are respectively connected to the refrigeration evaporator inlet and the liquid storage tank outlet.

7. The radiation air-conditioning and heat pump main unit as claimed in claim 2, wherein The heat recovery device further comprises a heat recovery heat exchanger, and the inlet pipe of the heat recovery heat exchanger is connected to the outlet of the electrically adjustable flow three-way valve.

8. The radiation air-conditioning and heat pump main unit as claimed in claim 7, wherein The heat recovery heat exchanger is a waste heat recovery plate heat exchanger.

9. The radiation air-conditioning and heat pump main unit as claimed in claim 7, wherein The outlet pipe of the heat recovery heat exchanger is connected to the inlet of the liquid storage tank, and a one-way valve is arranged on the pipeline between the heat recovery heat exchanger and the liquid storage tank.

10. A radiant air conditioning system comprising a radiant end assembly, a sensor, a controller, wherein, The radiant air conditioning system further comprises the radiant air conditioning heat pump main machine according to any one of claims 1-9.

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