CN111397003B - Air conditioning system and corresponding humidification control method thereof - Google Patents
Air conditioning system and corresponding humidification control method thereof Download PDFInfo
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- CN111397003B CN111397003B CN202010104686.4A CN202010104686A CN111397003B CN 111397003 B CN111397003 B CN 111397003B CN 202010104686 A CN202010104686 A CN 202010104686A CN 111397003 B CN111397003 B CN 111397003B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000010257 thawing Methods 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims description 27
- 239000003507 refrigerant Substances 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/36—Drip trays for outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0087—Indoor units, e.g. fan coil units with humidification means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/42—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger characterised by the use of the condensate, e.g. for enhanced cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/0008—Control or safety arrangements for air-humidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/228—Treatment of condensate, e.g. sterilising
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Humidification (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner and a corresponding humidification control method thereof. The air conditioning system comprises a humidifying device, an outdoor first heat exchanger and an outdoor second heat exchanger which are connected in parallel, wherein the outdoor first heat exchanger is provided with a water receiving disc which is arranged corresponding to the outdoor first heat exchanger, the water receiving disc is used for receiving defrosting water formed by defrosting of the outdoor first heat exchanger, and the defrosting water in the water receiving disc is conveyed to the humidifying device to humidify an air conditioning space. According to the air conditioner and the corresponding humidification control method thereof, the outdoor first heat exchanger special for condensing frosting and defrosting to form defrosting water is arranged on the outdoor side, the water formed in the frosting-defrosting process is automatically filled into the humidification water storage device to further realize indoor humidification, a user does not need to manually fill humidification water, and the use comfort and the convenience of the air conditioner are improved.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to an air conditioning system and a corresponding humidification control method thereof.
Background
Air humidity is an important index for measuring air quality in a room, the humidity is too low, air is dry, coughing is easy to happen to people, the humidity is too high, people feel sultry and easily suffer from rheumatism, and therefore comfortable experience can be brought to people only through proper humidity. Based on this kind of demand, adopt the mode of installing humidification device additional on air conditioner indoor set among the prior art to carry out corresponding regulation to the indoor humidity under the operating mode of heating, but the water in this kind of mode water storage part mostly needs the user to add according to actual conditions, and user's operation is comparatively troublesome.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to provide an air conditioning system and a corresponding humidification control method thereof, wherein an outdoor first heat exchanger dedicated for condensing frost and defrosting to form defrosting water is arranged outside an outdoor, and the water formed in the process of frosting and defrosting is automatically filled into a humidification water storage device to further realize indoor humidification, so that a user does not need to manually fill humidification water, and the use comfort and convenience of the air conditioner are improved.
In order to solve the above problems, the present invention provides an air conditioning system, which includes a humidifying device, and an outdoor first heat exchanger and an outdoor second heat exchanger that are connected in parallel, wherein the outdoor first heat exchanger has a water pan disposed corresponding to the outdoor first heat exchanger, the water pan is used for receiving defrosting water formed by defrosting of the outdoor first heat exchanger, and the defrosting water in the water pan is delivered to the humidifying device to humidify an air conditioning space.
Preferably, the refrigerant branch having the first outdoor heat exchanger is a first branch, the refrigerant branch having the second outdoor heat exchanger is a second branch, the first branch and the second branch are connected in parallel to form a first parallel flow path, the first branch is further connected in series with a first throttling device, and when the air conditioning system is in a heating mode, the first throttling device is located on an upstream side of a refrigerant inlet of the first outdoor heat exchanger, the air conditioning system further includes an indoor heat exchanger, and a second throttling device is connected in series between the indoor heat exchanger and the first parallel flow path.
Preferably, the first branch is further connected with a first three-way valve having a first port, a second port, and a third port, the first port is connected to the first outdoor heat exchanger, the second port is connected to one end of the first throttling device, and the third port is connected to the other end of the first throttling device, so as to control the refrigerant in the first branch to flow through the first outdoor heat exchanger directly or through the first throttling device.
Preferably, the air conditioning system further includes an external unit controller, the external unit controller is provided with a cooling flow channel, the first branch is further connected in parallel with a third branch, the cooling flow channel is connected in series in the third branch, the first branch is further connected in series with a second three-way valve, the second three-way valve is provided with a fourth port, a fifth port and a sixth port, the fourth port is connected with the other end of the first throttling device, the fifth port is connected with one end of the cooling flow channel, and the sixth port is connected with the other end of the cooling flow channel.
Preferably, the air conditioning system further comprises a temperature detection device, and the temperature detection device is used for detecting the tube temperature of the outdoor first heat exchanger and feeding the tube temperature back to a control component of the air conditioning system so as to switch the operation mode of the air conditioning system.
Preferably, a filtering piece is arranged on the conveying pipeline between the water receiving tray and the humidifying device, and/or the water receiving tray can be turned over so that the water receiving tray has a first state of collecting the defrosting water and a second state of preventing dirt from accumulating.
Preferably, the outdoor first heat exchanger is positioned on the air inlet side of the outdoor second heat exchanger; and/or the heat exchange area of the outdoor first heat exchanger is smaller than that of the outdoor second heat exchanger.
The present invention also provides a humidification control method for controlling the air conditioning system, including:
acquiring a working mode of an air conditioning system;
when the working mode is a heating mode, acquiring the tube temperature of the outdoor first heat exchanger;
when the outdoor first heat exchanger meets defrosting conditions, switching the working mode into a refrigeration mode;
and controlling the operation of the humidifying device.
Preferably, the first and second electrodes are formed of a metal,
after the working mode is switched from the heating mode to the cooling mode, the tube temperature of the outdoor first heat exchanger is obtained again;
and when the defrosting of the outdoor first heat exchanger is finished, switching the working mode into a heating mode.
Preferably, the first and second electrodes are formed of a metal,
when the working mode is a heating mode, controlling the first port of the first three-way valve to be communicated with the second port, and controlling the fourth port of the second three-way valve to be communicated with the sixth port; or when the working mode is the refrigeration mode, the first port of the first three-way valve is controlled to be communicated with the third port, and the fourth port of the second three-way valve is controlled to be communicated with the fifth port.
According to the air conditioning system and the corresponding humidification control method thereof, the outdoor first heat exchanger is arranged for condensation frosting and defrosting, so that a source of water of the humidification device can be formed through defrosting, the humidification water storage device is automatically filled with water formed in the frosting-defrosting process of the outdoor first heat exchanger when the working mode of the air conditioning system is in a heating mode, indoor humidification is achieved, a user does not need to manually fill humidification water, and the use comfort and convenience of the air conditioner are improved.
Drawings
FIG. 1 is a schematic diagram of an air conditioning system in a heating mode according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an air conditioning system of an embodiment of the present invention in a cooling mode;
FIG. 3 is a schematic diagram of an air conditioning system in a heating mode according to another embodiment of the present invention;
fig. 4 is a schematic diagram of an air conditioning system in a cooling mode according to another embodiment of the present invention.
The reference numerals are represented as:
1. a compressor; 2. a four-way valve; 3. an indoor heat exchanger; 41. a first throttling device; 42. a second throttling device; 51. an outdoor first heat exchanger; 52. an outdoor second heat exchanger; 61. a first three-way valve element; 62. a second three-way valve element; 7. an external machine controller.
Detailed Description
Referring to fig. 1 to 4 in combination, according to an embodiment of the present invention, there is provided an air conditioning system, including a compressor 1, a four-way valve 2, an indoor heat exchanger 3, a first throttling device 41, a second throttling device 42, an outdoor first heat exchanger 51, and an outdoor second heat exchanger 52, where the compressor 1, the four-way valve 2, the indoor heat exchanger 3, the second throttling device 42, the outdoor first heat exchanger 51, and the outdoor second heat exchanger 52 form a first refrigerant cycle, the compressor 1, the four-way valve 2, the indoor heat exchanger 3, the second throttling device 42, the first throttling device 41, and the outdoor first heat exchanger 51 form a second refrigerant cycle, the outdoor first heat exchanger 51 and the outdoor second heat exchanger 52 are connected in parallel, and further including a humidifying device (not shown in the drawings), the outdoor first heat exchanger 51 has a water receiving tray (not shown in the drawings) corresponding thereto, the water receiving tray is used for receiving defrosting water formed by defrosting the outdoor first heat exchanger 51, and the defrosting water in the water pan is conveyed to the humidifying device to humidify the air conditioning space. In the technical scheme, the outdoor first heat exchanger 51 is arranged for condensation, frosting and defrosting, so that the source of water of the humidifying device can be formed by defrosting, the humidifying and water storing device is automatically filled with water formed in the frosting-defrosting process of the outdoor first heat exchanger 51 when the working mode of the air conditioning system is in the heating mode, indoor humidification is further realized, manual filling of humidifying water by a user is not needed, and the use comfort and the convenience of the air conditioner are improved. It can be understood that, in this embodiment, the air conditioning system is in a heating mode when the outdoor first heat exchanger 51 is frosted, and the air conditioning system is in a cooling mode when frosted. The humidifying device can adopt a conventional ultrasonic atomizer, a high-speed centrifugal atomizer, an air compression atomizer and the like, and the specific principle and the structural type of the humidifying device are not particularly limited in the invention, theoretically, the humidifying device only can form an atomizing effect on water and can guide atomized water vapor into a humidifying space to realize humidification.
Further, for convenience of description, a refrigerant branch having the outdoor first heat exchanger 51 is defined as a first branch, a refrigerant branch having the outdoor second heat exchanger 52 is defined as a second branch, a flow path formed by connecting the first branch and the second branch in parallel is defined as a first parallel flow path, the first branch is further connected in series with a first throttling device 41, when the air conditioning system is in a heating mode, the first throttling device 41 is located on an upstream side of a refrigerant inlet of the outdoor first heat exchanger 51, the air conditioning system further includes an indoor heat exchanger 3, and a second throttling device 42 is connected in series between the indoor heat exchanger 3 and the first parallel flow path. In the technical scheme, the refrigerant is subjected to secondary throttling by the first throttling device 41 and the second throttling device 42 (which are arranged on the refrigerant trunk line) arranged on the first branch line, so that the refrigerant entering the outdoor first heat exchanger 51 can be further throttled, depressurized and cooled, the frosting of the outer side of the outdoor first heat exchanger 51 can be more easily realized, the water supply of the outdoor first heat exchanger to the humidifying device can be further ensured, and the humidifying function and the humidifying effect in the heating mode can be further ensured.
Preferably, the first branch is further connected with a first three-way valve 61, the first three-way valve 61 has a first port, a second port, and a third port, the first port is connected with the outdoor first heat exchanger 51, the second port is connected with one end of the first throttling device 41, and the third port is connected with the other end of the first throttling device 41, so as to control the refrigerant in the first branch to flow through the outdoor first heat exchanger 51 directly or through the outdoor first heat exchanger 51 via the first throttling device 41. In the technical scheme, different flow paths of the refrigerant are selected under different working modes through the first three-way valve 61, so that the frosting efficiency under the heating mode and the heat dissipation efficiency under the cooling mode can be ensured.
Further, the air conditioning system further comprises an external unit controller 7, a cooling flow channel is arranged on the external unit controller 7, a third branch is further connected in parallel to the first branch, the cooling flow channel is connected in series to the third branch, a second three-way valve 62 is further connected in series to the first branch, the second three-way valve 62 is provided with a fourth port, a fifth port and a sixth port, the fourth port is connected with the other end of the first throttling device 41, the fifth port is connected with one end of the cooling flow channel, and the sixth port is connected with the other end of the cooling flow channel. In this technical solution, different flow path selections of the refrigerant in different working modes are realized by the second three-way valve 62, so that the high efficiency of frosting the outdoor first heat exchanger 51 in the heating mode and the high efficiency of heat dissipation of the outdoor unit controller 7 in the cooling mode can be ensured.
For example, the first three-way valve element 61 and the second three-way valve element 62 may be a conventional three-way valve as shown in fig. 1 and fig. 2, or may be formed by combining two-way valves as shown in fig. 3 and fig. 4, or may be implemented by any other three-way valve element capable of switching a flow path, which is not limited in particular.
In order to enable the automatic supply of the water source of the humidifying device, preferably, the air conditioning system further comprises a temperature detection device for detecting the tube temperature of the outdoor first heat exchanger 51 and feeding the tube temperature back to a control component of the air conditioning system so as to switch the operation mode of the air conditioning system. Specifically, when the temperature detection device detects that the tube temperature of the outdoor first heat exchanger 51 is compared with the indoor environment temperature and whether defrosting is performed or not is judged, and when defrosting is required to be performed on the outdoor first heat exchanger 51, the air conditioning system is controlled to be switched from the heating mode to the cooling mode, so that quick and efficient defrosting of the outdoor first heat exchanger 51 is achieved, and defrosting water is collected in real time for humidification, and the judgment of whether defrosting is performed or not only follows the external defrosting judgment logic of the air conditioner in the prior art, but the core of the present invention is to obtain the tube temperature of the outdoor first heat exchanger 51 instead of the tube temperature of the outdoor second heat exchanger 52. In order to reduce as much as possible the adverse effect that the switching of the operation mode of the air conditioning system from the heating mode to the cooling mode (defrosting) may cause fluctuation of the indoor temperature, preferably, the outdoor first heat exchanger 51 is located on the air intake side of the outdoor second heat exchanger 52; and/or the heat exchange area of the outdoor first heat exchanger 51 is smaller than the heat exchange area of the outdoor second heat exchanger 52, and more specifically, the overall size of the outdoor first heat exchanger 51 is smaller than the overall size of the outdoor second heat exchanger 52, for example, the overall size of the outdoor first heat exchanger 51 is smaller than 1/4 of the overall size of the outdoor second heat exchanger 52, so that the frosting process of the outdoor first heat exchanger 51 can be shortened, and the adverse effect of long-time operation of the refrigeration mode on indoor temperature fluctuation is avoided as much as possible.
A filter element (not shown) is arranged on the conveying pipeline between the water pan and the humidifying device, for example, a filter is used for carrying out necessary purification treatment on the defrosting water before the defrosting water enters the room for humidifying; and/or the water pan can be turned over so that the water pan has a first state of collecting the defrosting water and a second state of preventing dirt accumulation, that is, the water pan is different from a water collecting pan in the prior art in that the water pan in the present invention can be turned over, specifically, when the outdoor first heat exchanger 51 is defrosted, the opening faces to receive water, and when the outdoor first heat exchanger 51 is frosted or not defrosted (for example, an air conditioning system is not operated), the opening faces downward, so that the dirt accumulation in the water pan along with the defrosted water can be prevented from entering the room to cause pollution. In the specific implementation of the turning, for example, a stepping motor may be used for driving.
According to an embodiment of the present invention, there is also provided a humidification control method for controlling the air conditioning system, including:
acquiring working modes of an air conditioning system, wherein the working modes comprise a heating mode and a refrigerating mode;
when the working mode is a heating mode, acquiring the tube temperature of the outdoor first heat exchanger 51;
when the outdoor first heat exchanger 51 meets the defrosting condition, switching the working mode to a refrigeration mode;
and controlling the operation of the humidifying device.
Preferably, the first and second electrodes are formed of a metal,
after the working mode is switched from the heating mode to the cooling mode, the tube temperature of the outdoor first heat exchanger 51 is obtained again; and when the defrosting of the outdoor first heat exchanger 51 is finished, switching the working mode into a heating mode.
Preferably, when the working mode is a heating mode, the first port of the first three-way valve 61 is controlled to be communicated with the second port, and the fourth port of the second three-way valve 62 is controlled to be communicated with the sixth port, in the technical scheme, when the air conditioning system is in the heating mode, a refrigerant flowing out after heat exchange through the indoor heat exchanger 3 is subjected to secondary throttling in the first branch path through the first throttling device 41 and then enters the outdoor first heat exchanger 51, so that the outdoor first heat exchanger 51 can be ensured to be frosted more efficiently, a humidifying condition can be provided more efficiently, and meanwhile, the refrigerant is controlled not to flow through the outdoor unit controller 7 to be prevented from frosting; or, when the operation mode is the cooling mode, the first port of the first three-way valve 61 is controlled to be communicated with the third port, and the fourth port of the second three-way valve 62 is controlled to be communicated with the fifth port, in the technical scheme, when the air conditioning system is in the cooling mode, the high-temperature refrigerant discharged by the compressor 1 firstly flows into the outdoor first heat exchanger 51 in the first branch to defrost the outdoor first heat exchanger efficiently, and the flowing heat-exchanged refrigerant directly flows to the outdoor unit controller 7 without flowing through the first throttling device 41 for throttling, so that the condensation phenomenon caused by too large temperature difference of the supercooled refrigerant in the outdoor unit controller 7 can be prevented, and the safety and reliability of the outdoor unit controller 7 are further ensured.
The first throttling device 41 and the second throttling device 42 may be implemented in the form of an electronic expansion valve, a capillary tube, or the like; the indoor heat exchanger 3, the outdoor first heat exchanger 51, and the outdoor second heat exchanger 52 may be of a fin-tube type, a microchannel type, or the like, and the present invention is not particularly limited.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (7)
1. An air conditioning system is characterized by comprising a humidifying device, an outdoor first heat exchanger (51) and an outdoor second heat exchanger (52) which are connected in parallel, wherein the outdoor first heat exchanger (51) is provided with a water pan which is arranged correspondingly, the water pan is used for receiving defrosting water formed by defrosting of the outdoor first heat exchanger (51), and the defrosting water in the water pan is conveyed into the humidifying device to humidify an air conditioning space; the outdoor first heat exchanger (51) is positioned on the air inlet side of the outdoor second heat exchanger (52); the heat exchange area of the outdoor first heat exchanger (51) is smaller than that of the outdoor second heat exchanger (52); the air conditioning system comprises a refrigerant branch with the outdoor first heat exchanger (51), a refrigerant branch with the outdoor second heat exchanger (52), a first branch, a first parallel flow path, a first throttling device (41), an indoor heat exchanger (3), and a second throttling device (42), wherein the refrigerant branch with the outdoor first heat exchanger (51) is a first branch, the refrigerant branch with the outdoor second heat exchanger (52) is a second branch, the first branch and the second branch are connected in parallel to form the first parallel flow path, the first throttling device (41) is arranged on the upstream side of a refrigerant inlet of the outdoor first heat exchanger (51) in series on the first branch, and the second throttling device (42) is arranged between the indoor heat exchanger (3) and the first parallel flow path in series; the first branch is further connected with a first three-way valve (61), the first three-way valve (61) is provided with a first port, a second port and a third port, the first port is connected with the outdoor first heat exchanger (51), the second port is connected with one end of the first throttling device (41), and the third port is connected with the other end of the first throttling device (41), so that the refrigerant in the first branch can directly flow through the outdoor first heat exchanger (51) or flow through the outdoor first heat exchanger (51) through the first throttling device (41).
2. The air conditioning system according to claim 1, further comprising an external machine controller (7), wherein the external machine controller (7) has a cooling flow channel, the first branch is further connected in parallel with a third branch, the cooling flow channel is connected in series with the third branch, the first branch is further connected in series with a second three-way valve (62), the second three-way valve (62) has a fourth port, a fifth port and a sixth port, the fourth port is connected with the other end of the first throttling device (41), the fifth port is connected with one end of the cooling flow channel, and the sixth port is connected with the other end of the cooling flow channel.
3. The air conditioning system of claim 1, further comprising a temperature detection device for detecting a tube temperature of the outdoor first heat exchanger (51) and feeding back to a control part of the air conditioning system to switch an operation mode of the air conditioning system.
4. An air conditioning system according to claim 1, wherein the water pan is provided with a filter element on the delivery line between the water pan and the humidifying device, and/or wherein the water pan can be inverted to provide the water pan with a first condition for collecting the defrosted water and a second condition for preventing the accumulation of dirt.
5. A humidification control method for controlling the air conditioning system of any one of claims 1 to 4, comprising:
acquiring a working mode of an air conditioning system;
when the working mode is a heating mode, acquiring the tube temperature of the outdoor first heat exchanger (51);
when the outdoor first heat exchanger (51) meets the defrosting condition, switching the working mode into a refrigeration mode;
and controlling the operation of the humidifying device.
6. The humidification control method according to claim 5,
after the working mode is switched from the heating mode to the cooling mode, the tube temperature of the outdoor first heat exchanger (51) is obtained again;
and when defrosting of the outdoor first heat exchanger (51) is finished, switching the working mode into a heating mode.
7. The humidification control method according to claim 6,
when the working mode is a heating mode, controlling the first port of the first three-way valve (61) to be communicated with the second port, and controlling the fourth port of the second three-way valve (62) to be communicated with the sixth port; or when the working mode is a cooling mode, the first port of the first three-way valve (61) is controlled to be communicated with the third port, and the fourth port of the second three-way valve (62) is controlled to be communicated with the fifth port.
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| CN112032851B (en) * | 2020-08-27 | 2022-04-26 | 珠海格力电器股份有限公司 | Humidifying equipment and control method and device thereof |
| CN113654167B (en) * | 2021-08-02 | 2022-10-28 | 青岛海尔空调器有限总公司 | Air conditioner dust removal system and control method thereof |
| CN114893842B (en) * | 2022-06-22 | 2023-07-21 | 珠海格力电器股份有限公司 | Humidification device, humidification air conditioner and control method of humidification air conditioner |
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