Air conditioner with integrated fresh air humidification and control method thereof

Abstract

The application provides an air conditioner with integrated fresh air and humidification and a control method thereof. The air conditioner with integrated fresh air and humidification comprises a heat pump circulation module, a fresh air module and a humidification module. The heat pump circulation module comprises a heat pump circulation loop, an indoor heat exchange device, an outdoor heat exchange device, an indoor fan, an outdoor fan, a four-way reversing valve, a gas-liquid separator and a compressor. The fresh air module comprises a fresh air channel, wherein the fresh air channel is provided with a fresh air inlet and a fresh air outlet at two ends respectively, and a fresh air fan is arranged in the fresh air channel. The humidification module comprises a water storage device, a humidification pipeline and humidification filler. The humidification pipeline is connected with an outlet of the water storage device, the humidification filler is arranged in the fresh air channel and located at an air outlet end of the fresh air fan, and the humidification pipeline is used for transferring water in the water storage device to the humidification filler. The technical problem that an air conditioner is difficult to realize winter humidification, fresh air health and winter-summer dual use in small size in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner with integrated fresh air humidification and a control method thereof. Background Art

[0002] In order to further expand the scope of use of room air conditioners, it is particularly important to improve the comfort of the actual use process of air conditioners (especially in the heating season). In the traditional heating process, the indoor air is dry-heated, and the air outlet humidity and indoor humidity are both low, so the user's comfort is seriously affected.

[0003] To address these technical requirements, some existing patents propose the application of humidification systems to integrated room air conditioners. However, these patents fail to consider the low outdoor temperatures during the heating season, which prevent humidification of fresh air. Furthermore, they lack integration with the cooling season to achieve efficient and healthy operation in both cooling and heating seasons. Central air conditioning systems offer independent or integrated fresh air systems, which effectively address the aforementioned issues of fresh air health and winter humidification, but struggle to miniaturize them for use in residential air conditioners.

[0004] Therefore, there is an urgent need for a product that combines a miniaturized household air conditioner with a fresh air system to improve the energy efficiency and comfort of the unit throughout the year, especially to increase the humidity during the heating season. Summary of the Invention

[0005] The present invention provides an air conditioner with integrated fresh air humidification and a control method thereof, which solves the technical problems in the prior art that air conditioners are difficult to achieve miniaturization in winter, healthy fresh air, and dual-use in winter and summer.

[0006] The present invention provides an integrated fresh air humidification air conditioner, comprising:

[0007] A heat pump circulation module, comprising a heat pump circulation loop, an indoor heat exchange device, an outdoor heat exchange device, an indoor fan, an outdoor fan, a four-way reversing valve, a gas-liquid separator, and a compressor. The indoor heat exchange device and the outdoor heat exchange device are arranged on the heat pump circulation loop, two interfaces of the four-way reversing valve are respectively connected to the heat pump circulation loop, the outlet of the gas-liquid separator is connected to the inlet of the compressor, and the inlet of the gas-liquid separator and the outlet of the compressor are respectively connected to the other two interfaces of the four-way reversing valve;

[0008] A fresh air module, the fresh air module includes a fresh air channel, a fresh air inlet and a fresh air outlet are respectively provided at both ends of the fresh air channel, and a fresh air fan is provided in the fresh air channel;

[0009] A humidification module, which includes a water storage device, a humidification pipeline and a humidification filler. The humidification pipeline is connected to the outlet of the water storage device. The humidification filler is arranged in the fresh air channel and located at the outlet end of the fresh air fan. The humidification pipeline is used to transfer water in the water storage device to the humidification filler.

[0010] According to the air conditioner with integrated fresh air humidification provided by the present invention, the humidification module also includes a preheating device and a heating device, the preheating device and the heating device are arranged on the heat pump circulation loop, and the preheating device and the heating device are respectively connected to the humidification pipeline.

[0011] According to the air conditioner with integrated fresh air humidification provided by the present invention, the outlet of the water storage device is provided with a booster water pump for pumping water into the humidification pipeline, the pipeline connecting the preheating device and the humidification pipeline is provided with a first stop valve, and the humidification pipeline is provided with a second stop valve.

[0012] According to the air conditioner with integrated fresh air humidification provided by the present invention, a water sprinkling device is provided at the outlet of the humidification pipeline, and the water sprinkling device is used to transfer water in the humidification pipeline to the humidification filler.

[0013] According to the air conditioner with integrated fresh air humidification provided by the present invention, a fresh air valve for controlling whether the fresh air inlet and the fresh air outlet are connected is provided in the fresh air channel; a return air outlet is provided on the fresh air channel, and a return air valve for controlling the return air is provided on the return air outlet.

[0014] According to the air conditioner with integrated fresh air humidification provided by the present invention, the heat pump circulation module further includes a throttling device, and the throttling device is arranged on the heat pump circulation loop.

[0015] According to the integrated fresh air humidification air conditioner provided by the present invention, a filtering device is provided at the air inlet end of the fresh air blower.

[0016] According to the air conditioner with integrated fresh air humidification provided by the present invention, the indoor heat exchange device includes an indoor convection heat exchanger and a radiation heat exchanger.

[0017] The present invention also provides a control method for an air conditioner with integrated fresh air humidification as described in any one of the above items, comprising:

[0018] Preset indoor set temperature, indoor set humidity, indoor set enthalpy value and indoor carbon dioxide set concentration;

[0019] Collect outdoor temperature, outdoor humidity, outdoor enthalpy, indoor humidity and indoor carbon dioxide concentration data;

[0020] In cooling mode:

[0021] When the collected indoor temperature is lower than the indoor set temperature and the collected indoor humidity is lower than the indoor set humidity, the fresh air blower is turned on, and the booster water pump, the first stop valve and the second stop valve are turned off;

[0022] When the collected outdoor enthalpy value is lower than the indoor set enthalpy value and the collected indoor temperature is higher than the indoor set temperature, the fresh air blower, the booster water pump and the second stop valve are turned on, and the first stop valve is closed;

[0023] When the collected outdoor enthalpy value is higher than the indoor set enthalpy value and the collected indoor humidity is lower than the indoor set humidity, the energy consumption of turning on the fresh air module is calculated. If the calculated energy consumption of turning on the fresh air module is lower, the fresh air fan is turned on, and the booster water pump, the first stop valve and the second stop valve are turned off;

[0024] When the collected indoor humidity is higher than the indoor set humidity and the collected outdoor enthalpy value is lower than the indoor set enthalpy value, the energy consumption of turning on the fresh air module is calculated. If the calculated energy consumption of turning on the fresh air module is lower, the fresh air fan is turned on, and the booster water pump, the first stop valve and the second stop valve are turned off;

[0025] In heating mode:

[0026] When the collected indoor carbon dioxide concentration is higher than the indoor carbon dioxide set concentration and the collected outdoor humidity is lower than the indoor set humidity, the fresh air blower, the booster water pump and the first stop valve are turned on, and the second stop valve is closed;

[0027] When the collected indoor carbon dioxide concentration is higher than the indoor carbon dioxide set concentration and the collected outdoor humidity is higher than the indoor set humidity, the fresh air blower is turned on, the booster water pump, the first stop valve and the second stop valve are turned off;

[0028] When the collected indoor carbon dioxide concentration is lower than the indoor carbon dioxide set concentration and the collected indoor humidity is lower than the indoor set humidity, the fresh air fan, the booster water pump, and the second stop valve are turned on, the fresh air valve is closed, and the return air valve is opened;

[0029] When the collected indoor carbon dioxide concentration is lower than the indoor carbon dioxide set concentration and the collected indoor humidity is higher than the indoor set humidity, the fresh air fan, the booster water pump, the first stop valve and the second stop valve are turned off.

[0030] According to the control method of the integrated fresh air humidification air conditioner provided by the present invention, the formula for calculating the energy consumption of the fresh air module when it is turned on is:

[0031]

[0032] Among them, Q S is the indoor sensible heat load, Q Lis the indoor latent heat load, Δt=t set -t amb , that is, the difference between the indoor set temperature and the collected outdoor temperature, Δd = d set -d amb , that is, the difference between the indoor set humidity and the collected outdoor humidity, Q GL is the latent heat that the fresh air module can process, r is the latent heat of vaporization of water vapor, and COP1 and COP2 are the energy efficiency ratios of the unit before and after processing by the fresh air module.

[0033] The integrated fresh air humidification air conditioner provided by the present invention adds a fresh air module and a humidification module to the heat pump circulation module, so that the air conditioner can be combined with the fresh air module and the humidification module in both summer cooling and winter heating conditions, achieving efficient and stable operation. The compact structure expands the product's scope of application and solves the technical problems of the prior art in achieving miniaturized winter humidification, healthy fresh air, and dual-use in winter and summer.

[0034] The control method of the air conditioner provided by the present invention compares the collected outdoor temperature, outdoor humidity and outdoor enthalpy value data with the preset indoor set temperature, indoor set humidity and indoor set enthalpy value respectively, and controls the air conditioner to enter different operating modes in cooling mode and heating mode according to different comparison results, thereby improving the intelligence level of the air conditioner and enhancing the user's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 is a schematic diagram of an embodiment of an air conditioner with integrated fresh air humidification provided by the present invention;

[0037] Figure 2 Schematic diagram of the cooling mode of the embodiment of the air conditioner with integrated fresh air humidification provided by the present invention;

[0038] Figure 3 Schematic diagram of the operation mode of the heating mode of the embodiment of the air conditioner with integrated fresh air humidification provided by the present invention;

[0039] Figure 4 This is one of the psychrometric diagrams of the air conditioner with integrated fresh air humidification provided by the present invention when operating in cooling mode;

[0040] Figure 5This is the second psychrometric diagram of the air conditioner with integrated fresh air humidification provided by the present invention when operating in cooling mode;

[0041] Figure 6 This is the third psychrometric diagram of the air conditioner with integrated fresh air humidification provided by the present invention when operating in cooling mode;

[0042] Figure 7 This is the fourth psychrometric diagram of the air conditioner with integrated fresh air humidification provided by the present invention when operating in cooling mode;

[0043] Figure 8 This is a temperature entropy diagram of the air conditioner with integrated fresh air humidification provided by the present invention when operating in heating mode;

[0044] Figure 9 This is a psychrometric diagram of the air conditioner with integrated fresh air humidification provided by the present invention when operating in heating mode;

[0045] Figure 10 It is a schematic diagram of a control method for an air conditioner with integrated fresh air humidification provided by the present invention.

[0046] Reference numerals:

[0047] 1. Heat pump circulation loop; 2. Indoor heat exchange device; 3. Outdoor heat exchange device; 4. Indoor fan; 5. Outdoor fan; 6. Four-way reversing valve; 7. Gas-liquid separator; 8. Compressor; 9. Fresh air duct; 10. Fresh air fan; 11. Water storage device; 12. Humidification pipeline; 13. Humidification filler; 14. Preheating device; 15. Heating device; 16. Booster water pump; 17. First stop valve; 18. Second stop valve; 19. Water sprinkling device; 20. Water supply pipe; 21. Water supply valve; 22. Fresh air valve; 23. Return air inlet; 24. Return air valve; 25. Throttling device; 26. Filter device; 27. Radiant heat exchanger. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0049] The following combination Figures 1-10 The present invention describes an air conditioner with integrated fresh air humidification and a control method thereof.

[0050] Example 1

[0051] like Figure 1FIG. 1 is a schematic diagram of an embodiment of an integrated fresh air humidification air conditioner provided by the present invention. The integrated fresh air humidification air conditioner in this embodiment includes:

[0052] Heat pump circulation module, the heat pump circulation module includes a heat pump circulation loop 1, an indoor heat exchange device 2, an outdoor heat exchange device 3, an indoor fan 4, an outdoor fan 5, a four-way reversing valve 6, a gas-liquid separator 7 and a compressor 8. The indoor heat exchange device 2 and the outdoor heat exchange device 3 are arranged on the heat pump circulation loop 1. The four-way reversing valve 6 includes four interfaces a, b, c and d. The interfaces a and c of the four-way reversing valve 6 are respectively connected to the heat pump circulation loop 1. The outlet of the gas-liquid separator 7 is connected to the inlet of the compressor 8. The inlet of the gas-liquid separator 7 and the outlet of the compressor 8 are respectively connected to the interfaces b and d of the four-way reversing valve 6;

[0053] Fresh air module, the fresh air module includes a fresh air channel 9, with a fresh air inlet and a fresh air outlet at both ends of the fresh air channel 9, and a fresh air fan 10 is provided in the fresh air channel 9;

[0054] The humidification module includes a water storage device 11, a humidification pipeline 12, and a humidification filler 13. The humidification pipeline 12 is connected to the outlet of the water storage device 11. The humidification filler 13 is arranged in the fresh air duct 9 and is located at the air outlet end of the fresh air blower 10. The humidification pipeline 12 is used to transfer water from the water storage device 11 to the humidification filler 13. In addition, in this embodiment, the humidification filler 13 is connected to the water storage device 11 to facilitate water recycling.

[0055] like Figure 1 As shown, in this embodiment, the humidification module further includes a preheating device 14 and a heating device 15, which are arranged on the heat pump circulation loop 1, and are respectively connected to the humidification pipeline 12. By arranging the preheating device 14 and the heating device 15, the water in the water storage device 11 can be heated so that the water reaching the humidification filler 13 has a suitable temperature. When the fresh air module is turned on, fresh air gas with suitable humidity and temperature can be introduced into the room through the fresh air outlet of the fresh air channel 9. Generally, the preheating device 14 and the heating device 15 are used to heat the water in the water storage device 11 during winter heating. Of course, in the summer when the indoor temperature is high, the preheating device 14 and the heating device 15 are in the off state, and the unheated water can be directly transferred to the humidification filler 13 through the water storage device 11 and the heating pipeline.

[0056] like Figure 1As shown, in this embodiment, the outlet of the water storage device 11 is provided with a booster water pump 16 for pumping water into the humidification pipeline 12, the pipeline connecting the preheating device 14 and the humidification pipeline 12 is provided with a first stop valve 17, and the humidification pipeline 12 is provided with a second stop valve 18. The booster water pump 16 provides power to the water to drive it to flow in the pipeline, the first stop valve 17 controls the connection and disconnection between the water storage device 11 and the preheating device 14, and the second stop valve 18 controls the connection and disconnection of the humidification pipeline 12. In this way, the flow direction of the water in the water storage device 11 can be controlled by controlling the connection and disconnection of the first stop valve 17 and the second stop valve 18, thereby forming the following two paths: (1) the water storage device 11, the booster water pump 16, the second stop valve 18, and the humidification packing 13 constitute a summer cold humidification circuit; (2) the water storage device 11, the booster water pump 16, the first stop valve 17, the preheating device 14, the heating device 15, and the humidification packing 13 constitute a winter hot humidification circuit. It can meet different usage needs in summer and winter respectively.

[0057] like Figure 1 As shown, in this embodiment, a water sprinkling device 19 is provided at the outlet of the humidification pipeline 12, and the water sprinkling device 19 is used to transfer the water in the humidification pipeline 12 to the humidification filler 13. The water outlet end of the water sprinkling device 19 is set above the humidification filler 13. When needed, the water in the water storage device 11 enters the water sprinkling device 19 through the pipeline and is sprinkled on the humidification filler 13 through the water sprinkling device 19, which can make the distribution of water in the humidification filler 13 more uniform, thereby improving the humidification effect. In addition, the humidification module of this embodiment also includes a water replenishment pipe 20 for replenishing water to the water storage device 11. A water replenishment valve 21 is provided on the water replenishment pipe 20. When in use, the water replenishment pipe 20 is connected to the water source, and the water replenishment valve 21 controls whether the water storage device 11 is replenished with water.

[0058] like Figure 1 As shown, in this embodiment, a fresh air valve 22 for controlling whether the fresh air inlet and the fresh air outlet are connected is provided in the fresh air duct 9. By providing the fresh air valve 22, it is convenient to control whether the fresh air inlet and the fresh air outlet are connected.

[0059] like Figure 1 As shown, in this embodiment, a return air port 23 is provided on the side wall of the fresh air duct 9, and a return air valve 24 is provided on the return air port 23 for controlling the return air. When the fresh air module is turned on, the outdoor fresh air enters the fresh air duct 9 through the fresh air inlet, then mixes with the indoor return air that enters the fresh air duct 9 through the return air port 23, and finally enters the room through the fresh air outlet of the fresh air duct 9.

[0060] like Figure 1As shown, in this embodiment, the heat pump circulation module further includes a throttling device 25, which is provided on the heat pump circulation loop 1. When the refrigerant flows through the throttling device 25 pre-installed in the pipeline, its flow will form a localized constriction at the throttling device 25, thereby increasing the flow velocity of the fluid medium and relatively reducing the hydrostatic pressure.

[0061] like Figure 1 As shown, in this embodiment, a filter device 26 is provided at the air inlet end of the fresh air blower 10. The filter device 26 can filter impurities (mainly dust) in the outdoor fresh air and the indoor return air to increase the cleanliness of the air.

[0062] like Figure 1 As shown, in this embodiment, the indoor heat exchange device 2 includes an indoor convection heat exchanger and a radiation heat exchanger 27. The indoor convection heat exchanger and the radiation heat exchanger 27 can be a device coupled into one body, or can be separate devices.

[0063] The cooling and heating modes of the air conditioner with integrated fresh air humidification of this embodiment are described in detail below.

[0064] Cooling mode

[0065] like Figure 2 Figure 2 shows a schematic diagram of the integrated fresh air humidification air conditioner of this embodiment operating in cooling mode. In this mode, the first shut-off valve 17 is closed, the second shut-off valve 18 is open, and the four-way reversing valve 6 connects the outlet of the compressor 8 to the outdoor heat exchanger 3 and the inlet of the gas-liquid separator 7 to the indoor convection heat exchanger. At this time, both the preheating device 14 and the heating device 15 are inoperative.

[0066] In the heat pump circulation module, the low-temperature, low-pressure gaseous refrigerant enters the intake port of the compressor 8 through the gas-liquid separator 7, is compressed into a high-temperature, high-pressure gaseous refrigerant, then enters the four-way reversing valve 6 through the outlet of the compressor 8, and then enters the outdoor heat exchange device 3. Under the action of the outdoor fan 5, it releases heat and liquefies, becoming a high-temperature, high-pressure liquid refrigerant. The throttle valve then throttles and reduces the pressure, turning it into a low-temperature, low-pressure two-phase refrigerant. After flowing through the inoperative preheating device 14, the refrigerant directly enters the indoor convection heat exchanger. Under the action of the indoor fan 4, it transfers cooling energy to the room. As needed, the radiation heat exchanger 27 can be operated, and then the vaporized low-temperature, low-pressure refrigerant flows through the heating device 15 and then through the four-way reversing valve 6 into the gas-liquid separator 7. In this mode, the air conditioner operates normally for cooling. The supply air enters the room through the air supply port.

[0067] At this time, in the fresh air humidification and cooling mode, the operating principle of the humidification module is that the water supply valve provides humidification water to the humidification module and stores it in the water storage device 11. Under the action of the booster water pump 16, the water enters the spray device through the second stop valve 18, and under the action of the humidification packing 13, it humidifies the fresh air and finally returns to the water storage device 11. If only the fresh air cooling mode or fresh air mode is in operation, the fresh air does not need to be humidified. At this time, the booster water pump 16, the first stop valve 17, and the second stop valve 18 are all in the closed state.

[0068] In the fresh air module, outdoor fresh air enters the system through the fresh air channel 9 and is mixed with part of the return air passing through the return air valve 24, and then is filtered in the filter (to remove dust and other impurities in the fresh air), and is pressurized by the fresh air fan 10, humidified under the action of the humidifying filler 13 (if the fresh air cooling mode or fresh air mode is running, there is no humidification process), and is sent into the room through the fresh air outlet.

[0069] It should be noted that, based on the cooling mode, the fresh air module is turned on and the air conditioner can be adjusted to the fresh air cooling mode; based on the cooling mode, the humidification module and the fresh air module are turned on and the air conditioner can be adjusted to the fresh air humidification cooling mode.

[0070] When only the fresh air module is turned on, the air conditioner is in fresh air mode; when only the humidification module is turned on, the air conditioner is in humidification mode. At this time, the booster water pump 16 is turned on, the second stop valve 18 is opened, the fresh air valve 22 can be closed, the return air valve 24 is opened, and the fresh air fan 10 is turned on to use the indoor return air to humidify the room separately.

[0071] Figure 4 and Figure 5 The air handling process of the air conditioner in the fresh air cooling mode is given. At this time, the indoor return air is cooled and dehumidified in the heat pump circulation module ( Figure 4 、 Figure 5 In the R-Sa process), fresh air is mixed with indoor supply air to the air supply point ( Figure 4 、 Figure 5 The mixture of O and Sa in the air reaches S), and then reaches the indoor return air point R through the heat and humidity treatment process line.

[0072] Figure 6 The working condition of the air conditioner in fresh air humidification and cooling mode is given. When the outdoor temperature is higher than the indoor set temperature and the indoor enthalpy value is also lower than the indoor set point enthalpy value, the indoor return air is cooled and dehumidified in the heat pump circulation module ( Figure 6 R-Sa process), fresh air is spray-cooled ( Figure 6 The upper and middle O-So process), and then mixed with the indoor air to the air supply point ( Figure 6 The air is mixed with Sa and So in the air to S), and then reaches the indoor return air point R through the heat and moisture treatment process line.

[0073] Figure 7 The air handling process of the enthalpy-psychrometric diagram of the air conditioner in fresh air mode is given. At this time, the indoor return air is cooled and dehumidified in the heat pump circulation module ( Figure 7 In the R-Sa process), fresh air is mixed with indoor supply air to the air supply point ( Figure 7 The mixture of O and Sa in the air reaches S), and then reaches the indoor return air point R through the heat and humidity treatment process line.

[0074] Heating mode

[0075] like Figure 3 Figure 2 shows a schematic diagram of the integrated fresh air humidification air conditioner of this embodiment operating in heating mode. In this mode, first shut-off valve 17 is open, second shut-off valve 18 is closed, and four-way reversing valve 6 connects the outlet of compressor 8 to the indoor convection heat exchanger and the inlet of gas-liquid separator 7 to the outdoor heat exchanger 3. At this time, preheating device 14 and heating device 15 are operating.

[0076] In the heat pump cycle module, the low-temperature and low-pressure gaseous refrigerant enters the suction port of the compressor 8 through the gas-liquid separator 7 ( Figure 8 AB process), compressed into high-temperature and high-pressure gaseous refrigerant, enters the four-way reversing valve 6 through the outlet of the compressor 8, and first passes through the heating device 15 to heat the spray water. At this time, the enthalpy value of the superheated high-temperature and high-pressure gaseous refrigerant is slightly reduced ( Figure 8 The BC process), the cooled refrigerant enters the indoor convection heat exchanger and transfers heat to the room under the action of the indoor fan 4. The radiation heat exchanger 27 can be operated, and the refrigerant releases heat and liquefies to become a high-temperature and high-pressure liquid refrigerant ( Figure 8 CD process). Further, the refrigerant after heat exchange passes through the preheating device 14, which heats the spray water on the one hand and actually supercools the refrigerant on the other hand ( Figure 8 DE process), reducing system throttling loss and improving energy efficiency. Then the refrigerant is throttled and depressurized under the action of the throttle valve, becoming a low-temperature, low-pressure two-phase refrigerant ( Figure 8 The low-temperature, low-pressure refrigerant absorbs heat and vaporizes in the outdoor heat exchange device 3 under the action of the outdoor fan 5, then enters the four-way reversing valve 6 and returns to the gas-liquid separator 7.

[0077] It should be noted that, based on the heating mode, the humidification module and the fresh air module are turned on, and the air conditioner can be adjusted to the fresh air humidification and heating mode.

[0078] Figure 9 The air handling process of the enthalpy-humidity diagram when the air conditioner is running in the fresh air humidification and heating mode is given. For the indoor return air, the heat pump circulation module can only achieve the return air heating, but not humidification ( Figure 9 R-Sa process); while the spray water is heated to a higher temperature ( Figure 9 W1-W2-W3 process), so that the fresh air is heated and humidified ( Figure 9 O to So process), the two are mixed and enter the air supply point S ( Figure 9 The air is mixed with Sa and So to S), and then reaches the indoor return air point R through the heat and moisture treatment process line.

[0079] Based on the above description of the integrated fresh air humidification air conditioner provided by the present invention, it can be seen that the integrated fresh air humidification air conditioner of the present invention has the following advantages:

[0080] By configuring a heat pump circulation module, a humidification module, and a fresh air module, the modules can work together to achieve multiple fresh air operation modes, improving indoor air quality and actively controlling indoor parameters using fresh air. In summer, the natural energy of fresh air can be utilized to reduce the indoor mechanical cooling load; in winter, fresh air can be humidified to improve indoor comfort, thus solving the problems of low summer energy efficiency and poor winter comfort in existing home air conditioning technologies using fresh air modules.

[0081] By installing a heater and preheater (recooler) in the heat pump circulation module to heat the hot water used for humidification spraying on the fresh air module, the saturated water vapor pressure of the fresh air is increased, and the moisture content of the fresh air is increased. This solves the problem of the existing system that requires preheating of the fresh air humidification in winter and the complexity of the system. During the winter fresh air heating process, the preheater (recooler) also plays a role in supercooling the system, increasing the unit cooling capacity and improving the energy efficiency ratio of the air conditioner.

[0082] Compared with traditional central air-conditioning systems with heating, humidification devices and fresh air modules, the fresh air module and heat pump circulation system are independent of each other, but can be coupled controlled. The system complexity is low and switching between different modes is simple. It is suitable for small systems such as heat pump room air conditioners. It has a compact structure and expands the product's scope of use, making it suitable for homes, offices and other occasions.

[0083] Example 2

[0084] like Figure 10 The present invention further provides a control method for an air conditioner with integrated fresh air humidification. The control method for the air conditioner of this embodiment is based on the air conditioner with integrated fresh air humidification in Example 1, and includes:

[0085] Preset indoor set temperature, indoor set humidity, indoor set enthalpy value and indoor set carbon dioxide concentration;

[0086] Collect outdoor temperature, outdoor humidity, outdoor enthalpy, indoor humidity and indoor carbon dioxide concentration data;

[0087] Compare the collected outdoor temperature, outdoor humidity, outdoor enthalpy, indoor humidity, and indoor carbon dioxide concentration data with the set indoor temperature, set indoor humidity, set indoor enthalpy, and set indoor carbon dioxide concentration. Select the corresponding working mode based on the comparison results, as follows:

[0088] In cooling mode:

[0089] When the collected indoor temperature is lower than the indoor set temperature and the collected indoor humidity is lower than the indoor set humidity, it is determined that the indoor temperature and humidification process needs to be performed, the fresh air blower 10 is turned on, and the booster water pump 16, the first stop valve 17 and the second stop valve 18 are closed;

[0090] When the collected outdoor enthalpy value is lower than the indoor set enthalpy value and the collected indoor temperature is higher than the indoor set temperature, it is determined that the indoor temperature needs to be cooled down, the fresh air fan 10, the booster pump 16 and the second stop valve 18 are turned on, and the first stop valve 17 is closed;

[0091] When the collected outdoor enthalpy value is higher than the indoor set enthalpy value and the collected indoor humidity is lower than the indoor set humidity, the energy consumption of turning on the fresh air module is calculated. If the calculated energy consumption of turning on the fresh air module is lower, the fresh air fan 10 is turned on, and the booster water pump 16, the first stop valve 17 and the second stop valve 18 are turned off. That is, the fresh air module is running at this time, and the humidification module is turned off;

[0092] When the collected indoor humidity is higher than the indoor set humidity and the collected outdoor enthalpy value is lower than the indoor set enthalpy value, the energy consumption of turning on the fresh air module is calculated. If the calculated energy consumption of turning on the fresh air module is lower, the fresh air fan 10 is turned on, and the booster water pump 16, the first stop valve 17 and the second stop valve 18 are turned off. That is, the fresh air module is running at this time, and the humidification module is turned off;

[0093] When the collected temperature, humidity and enthalpy values ​​do not meet the above comparison conditions, if the indoor carbon dioxide set concentration is higher than the collected indoor carbon dioxide concentration, the fresh air fan 10, the booster water pump 16, the first stop valve 17 and the second stop valve 18 are turned off, that is, the fresh air module and the humidification module are turned off; if the indoor carbon dioxide set concentration is lower than the collected indoor carbon dioxide concentration, the fresh air fan 10 is turned on, the booster water pump 16, the first stop valve 17 and the second stop valve 18 are turned off, that is, the fresh air module is turned on and the humidification module is turned off.

[0094] In heating mode:

[0095] When the collected indoor carbon dioxide concentration is higher than the indoor carbon dioxide set concentration and the collected outdoor humidity is lower than the indoor set humidity, the indoor air quality and humidity are not up to standard. The fresh air blower 10, the booster water pump 16 and the first stop valve 17 are turned on, and the second stop valve 18 is closed.

[0096] When the collected indoor carbon dioxide concentration is higher than the indoor carbon dioxide set concentration and the collected outdoor humidity is higher than the indoor set humidity, the indoor air quality does not meet the standard, the fresh air blower 10 is turned on, the booster pump 16, the first stop valve 17 and the second stop valve 18 are turned off;

[0097] When the collected indoor carbon dioxide concentration is lower than the set indoor carbon dioxide concentration and the collected indoor humidity is lower than the set indoor humidity, the indoor air quality meets the standard but the humidity does not meet the standard. The fresh air blower 10, the booster pump 16, and the second stop valve 18 are turned on, the fresh air valve 22 is closed, and the return air valve 24 is opened. The fresh air blower 10 is used to humidify the room.

[0098] When the collected indoor carbon dioxide concentration is lower than the indoor carbon dioxide set concentration and the collected indoor humidity is higher than the indoor set humidity, the indoor air quality meets the standard, and the fresh air fan 10, the booster water pump 16, the first stop valve 17 and the second stop valve 18 are turned off.

[0099] If none of the above conditions are met, but there are indoor air quality requirements, the fresh air module is turned on and operates in fresh air mode. If there is no need for fresh air or humidification, the fresh air module is turned off. At this time, the fresh air blower 10 is turned off, and the booster pump 16, first stop valve 17, and second stop valve 18 are all closed. In other words, the fresh air module and humidification module are turned off.

[0100] In this embodiment, the formula for calculating the energy consumption of the fresh air module when it is turned on is:

[0101]

[0102] Among them, Q S is the indoor sensible heat load, Q L is the indoor latent heat load, Δt=t set -t amb , that is, the difference between the indoor set temperature and the collected outdoor temperature, Δd = d set -d amb , that is, the difference between the indoor set humidity and the collected outdoor humidity, Q GL is the latent heat that the fresh air module can process, r is the latent heat of vaporization of water vapor, and COP1 and COP2 are the energy efficiency ratios of the unit before and after processing by the fresh air module.

[0103] The control method of the air conditioner provided by the present invention compares the collected outdoor temperature, outdoor humidity and outdoor enthalpy value data with the preset indoor set temperature, indoor set humidity and indoor set enthalpy value respectively, and controls the air conditioner to enter different operating modes in cooling mode and heating mode according to different comparison results, thereby improving the intelligence level of the air conditioner and enhancing the user's comfort.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A control method for an air conditioner with integrated fresh air humidification, characterized in that: The integrated fresh air humidification air conditioner comprises: A heat pump circulation module, comprising a heat pump circulation loop, an indoor heat exchange device, an outdoor heat exchange device, an indoor fan, an outdoor fan, a four-way reversing valve, a gas-liquid separator, and a compressor. The indoor heat exchange device and the outdoor heat exchange device are arranged on the heat pump circulation loop, two interfaces of the four-way reversing valve are respectively connected to the heat pump circulation loop, the outlet of the gas-liquid separator is connected to the inlet of the compressor, and the inlet of the gas-liquid separator and the outlet of the compressor are respectively connected to the other two interfaces of the four-way reversing valve; A fresh air module, the fresh air module includes a fresh air channel, a fresh air inlet and a fresh air outlet are respectively provided at both ends of the fresh air channel, and a fresh air fan is provided in the fresh air channel; A humidification module, the humidification module comprising a water storage device, a humidification pipeline and a humidification filler, the humidification pipeline being connected to the outlet of the water storage device, the humidification filler being arranged in the fresh air channel and located at the air outlet end of the fresh air blower, the humidification pipeline being used to transfer water in the water storage device to the humidification filler; The humidification module further includes a preheating device and a heating device, wherein the preheating device and the heating device are arranged on the heat pump circulation loop, and the preheating device and the heating device are respectively connected to the humidification pipeline; The outlet of the water storage device is provided with a booster water pump for pumping water into the humidification pipeline, a first stop valve is provided on the pipeline connecting the preheating device and the humidification pipeline, and a second stop valve is provided on the humidification pipeline; The control method comprises: Preset indoor set temperature, indoor set humidity, indoor set enthalpy value and indoor set carbon dioxide concentration; Collect outdoor temperature, outdoor humidity, outdoor enthalpy, indoor humidity and indoor carbon dioxide concentration data; In cooling mode: When the collected indoor temperature is lower than the indoor set temperature and the collected indoor humidity is lower than the indoor set humidity, the fresh air blower is turned on, and the booster water pump, the first stop valve and the second stop valve are turned off; When the collected outdoor enthalpy value is lower than the indoor set enthalpy value and the collected indoor temperature is higher than the indoor set temperature, the fresh air blower, the booster water pump and the second stop valve are turned on, and the first stop valve is closed; When the collected outdoor enthalpy value is higher than the indoor set enthalpy value and the collected indoor humidity is lower than the indoor set humidity, the energy consumption of turning on the fresh air module is calculated. If the calculated energy consumption of turning on the fresh air module is lower, the fresh air fan is turned on, and the booster water pump, the first stop valve and the second stop valve are turned off; When the collected indoor humidity is higher than the indoor set humidity and the collected outdoor enthalpy value is lower than the indoor set enthalpy value, the energy consumption of turning on the fresh air module is calculated. If the calculated energy consumption of turning on the fresh air module is lower, the fresh air fan is turned on, and the booster water pump, the first stop valve and the second stop valve are turned off; In heating mode: When the collected indoor carbon dioxide concentration is higher than the indoor carbon dioxide set concentration and the collected outdoor humidity is lower than the indoor set humidity, the fresh air blower, the booster water pump and the first stop valve are turned on, and the second stop valve is closed; When the collected indoor carbon dioxide concentration is higher than the indoor carbon dioxide set concentration and the collected outdoor humidity is higher than the indoor set humidity, the fresh air blower is turned on, the booster water pump, the first stop valve and the second stop valve are turned off; When the collected indoor carbon dioxide concentration is lower than the indoor carbon dioxide set concentration and the collected indoor humidity is lower than the indoor set humidity, the fresh air fan, the booster water pump, and the second stop valve are turned on, the fresh air valve is closed, and the return air valve is opened; When the collected indoor carbon dioxide concentration is lower than the indoor carbon dioxide set concentration and the collected indoor humidity is higher than the indoor set humidity, the fresh air fan, the booster water pump, the first stop valve and the second stop valve are turned off.

2. The control method of the integrated fresh air humidification air conditioner according to claim 1, characterized in that: The outlet of the humidification pipeline is provided with a water sprinkling device, and the water sprinkling device is used to transfer the water in the humidification pipeline to the humidification filler.

3. The control method of the integrated fresh air humidification air conditioner according to any one of claims 1-2, characterized in that: A fresh air valve for controlling whether the fresh air inlet and the fresh air outlet are connected is provided in the fresh air channel; a return air outlet is provided on the fresh air channel, and a return air valve for controlling return air is provided on the return air outlet.

4. The control method of the air conditioner with integrated fresh air humidification according to any one of claims 1-2, characterized in that: The heat pump circulation module further includes a throttling device, which is arranged on the heat pump circulation loop.

5. The control method of the air conditioner with integrated fresh air humidification according to any one of claims 1-2, characterized in that: A filtering device is provided at the air inlet end of the fresh air fan.

6. The control method of the air conditioner with integrated fresh air humidification according to any one of claims 1-2, characterized in that: The indoor heat exchange device includes an indoor convection heat exchanger and a radiation heat exchanger.

7. The control method of the integrated fresh air humidification air conditioner according to claim 1, characterized in that: The formula for calculating the energy consumption of the fresh air module is: Among them, Q S is the indoor sensible heat load, Q L is the indoor latent heat load, Δt=t set -t amb , that is, the difference between the indoor set temperature and the collected outdoor temperature, Δd = d set -d amb , that is, the difference between the indoor set humidity and the collected outdoor humidity, Q GL is the latent heat that the fresh air module can process, r is the latent heat of vaporization of water vapor, COP1 and COP2 are the energy efficiency ratios of the unit before and after treatment by the fresh air module, and c is the specific heat capacity of air.

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