Humidification system and air conditioner

Abstract

The utility model discloses a humidifying system and an air conditioner. The heat pump module comprises a compressor, a second heat exchanger, a first throttling component and a first heat exchanger which are connected in sequence; the containing cavity is provided with a heating piece, the second heat exchanger is arranged in the containing cavity, the containing cavity is arranged to contain water, the second heat exchanger is arranged to exchange heat with the water in the containing cavity, and the heating piece is arranged to enable the water in the containing cavity to form water vapor; and the steam exhaust passage is communicated with the accommodating cavity and is arranged to exhaust water steam in the accommodating cavity. When the heat pump module operates and a refrigerant passes through the second heat exchanger, heat can be released to heat water contained in the containing cavity, and the heating piece also heats the water in the containing cavity, so that the water in the containing cavity can be boiled more quickly to form water vapor, and the water vapor is discharged through the steam discharging channel; according to the scheme, the humidification system is higher in water vapor generation speed, and rapid humidification can be achieved.

Description

Technical Field

[0001] The present application relates to but is not limited to the field of air-conditioning technology, and specifically refers to a humidification system and an air conditioner. Background Art

[0002] The existing hot mist humidification device uses a PTC (Positive Temperature Coefficient) heater to heat water to boil to generate water vapor, which is supplied to the air duct of the air conditioner through the steam exhaust passage, and then enters the room from the air outlet of the air duct to humidify the indoor air when the air conditioner is running. The water vapor generation speed of the hot mist humidification device of this scheme is slow and cannot achieve rapid humidification. Utility Model Content

[0003] An embodiment of the present application provides a humidification system, comprising: a heat pump module, comprising a compressor, a second heat exchanger, a first throttling component and a first heat exchanger connected in sequence; a accommodating cavity provided with a heating element, the second heat exchanger being arranged in the accommodating cavity, the accommodating cavity being configured to accommodate water, the second heat exchanger being configured to exchange heat with the water in the accommodating cavity, the heating element being configured to form water vapor from the water in the accommodating cavity; and a steam exhaust passage, which is connected to the accommodating cavity and configured to exhaust the water vapor in the accommodating cavity.

[0004] In some exemplary embodiments, the accommodating cavity includes: a water storage cavity, the second heat exchanger is disposed in the water storage cavity, the water storage cavity is configured to store water, and the second heat exchanger is configured to exchange heat with the water in the water storage cavity; and a heating cavity provided with the heating element, which is connected to the water storage cavity, the water storage cavity is also configured to supply water to the heating cavity, and the heating element is configured to make the water in the heating cavity form water vapor.

[0005] In some exemplary embodiments, the humidification system further includes: a second water supply passage provided with a second water level control component, connecting the water storage chamber and the heating chamber, and configured to supply water from the water storage chamber to the heating chamber in a controlled manner through the second water level control component, and the second water level control component is configured to maintain the water level in the heating chamber at a second set water level.

[0006] In some exemplary embodiments, the second set water level is not higher than the top surface of the heating element.

[0007] In some exemplary embodiments, the humidification system further includes: a first water supply passage, which is in communication with the water storage cavity and is configured to supply water to the water storage cavity.

[0008] In some exemplary embodiments, the first water supply passage is equipped with a first switch valve and a first water level control component, the first switch valve is configured to control the first water supply passage to be opened or closed, and the first water level control component is configured to control the water level in the water storage chamber to remain at a first set water level.

[0009] In some exemplary embodiments, the humidification system further includes: a water receiving tray; and a drainage passage provided with a third switch valve, which is connected to the heating cavity and is configured to controllably drain the water in the heating cavity to the water receiving tray through the third switch valve.

[0010] In some exemplary embodiments, the heating element is a resistance heater, an infrared heater or an electromagnetic heater, and the second heat exchanger is a plate heat exchanger or a tube heat exchanger.

[0011] An embodiment of the present application also provides an air conditioner, comprising the humidification system described in any of the above embodiments.

[0012] In some exemplary embodiments, the air conditioner further includes a third heat exchanger and a four-way valve, the second heat exchanger, the third heat exchanger and the first throttling component are sequentially connected to form a first passage, and the first passage and the compressor are connected through the four-way valve.

[0013] In some exemplary embodiments, the air conditioner further includes a second throttling component, a third heat exchanger and a four-way valve, the second heat exchanger and the first throttling component form a parallel passage with the third heat exchanger and the second throttling component, the parallel passage is connected in series with the first heat exchanger to form a second passage, and the second passage and the compressor are connected through the four-way valve; wherein the third heat exchanger is located between the second throttling component and the first heat exchanger, and the second heat exchanger is located between the first throttling component and the first heat exchanger.

[0014] In the humidification system provided in the embodiment of the present application, the heat pump module is running, and the refrigerant flowing out from the outlet of the compressor passes through the second heat exchanger, the first throttling component and the first heat exchanger in sequence, and then flows back to the compressor from the inlet of the compressor. In the process of the refrigerant passing through the second heat exchanger, it releases heat to heat the water contained in the containing cavity, and the heating element also heats the water in the containing cavity, so that the water in the containing cavity can boil more quickly to form water vapor, and the water vapor is discharged through the steam exhaust passage. The humidification system of this scheme generates water vapor faster and can achieve rapid humidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the air conditioner according to some embodiments of the present application;

[0016] Figure 2It is a structural schematic diagram of an air conditioner according to some other embodiments of the present application;

[0017] Figure 3 for Figure 1 A flow chart of a control method of the air conditioner shown;

[0018] Figure 4 for Figure 2 Flow chart of a control method for an air conditioner shown.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 110 compressor, 120 first heat exchanger, 130 first throttling component, 140 second heat exchanger, 200 steam exhaust passage, 210 second switch valve, 300 water storage chamber, 400 heating chamber, 410 heating element, 500 second water supply passage, 510 second water level control element, 600 first water supply passage, 610 first switch valve, 620 first water level control element, 710 water receiving tray, 720 drainage passage, 721 third switch valve, 810 second throttling component, 820 third heat exchanger, 830 four-way valve. DETAILED DESCRIPTION

[0021] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0022] The humidification system provided in the embodiment of the present application is as follows: Figure 1 and Figure 2 As shown, it includes: a heat pump module, the heat pump module includes a compressor 110, a second heat exchanger 140, a first throttling component 130 and a first heat exchanger 120 connected in sequence; a accommodating cavity provided with a heating element 410, the second heat exchanger 140 is arranged in the accommodating cavity, the accommodating cavity is configured to accommodate water, the second heat exchanger 140 is configured to exchange heat with the water in the accommodating cavity, and the heating element 410 is configured to make the water in the accommodating cavity form water vapor; and a steam exhaust passage 200, the steam exhaust passage 200 is connected to the accommodating cavity, and the steam exhaust passage 200 is configured to exhaust the water vapor in the accommodating cavity.

[0023] In the humidification system, the heat pump module is running, and the refrigerant flowing out from the outlet of the compressor 110 passes through the second heat exchanger 140, the first throttling component 130 and the first heat exchanger 120 in sequence, and then flows back to the compressor 110 from the inlet of the compressor 110. In the process of the refrigerant passing through the second heat exchanger 140, it releases heat to heat the water contained in the containing cavity. The heating element 410 also heats the water in the containing cavity, so that the water in the containing cavity can boil more quickly to form water vapor, and the water vapor is discharged through the steam exhaust passage 200. In this scheme, the humidification system generates water vapor faster and can achieve rapid humidification.

[0024] In some examples, such as Figure 1 and Figure 2 As shown, the accommodating cavity includes: a water storage cavity 300, a second heat exchanger 140 is arranged in the water storage cavity 300, the water storage cavity 300 is configured to store water, and the second heat exchanger 140 is configured to exchange heat with the water in the water storage cavity 300; and a heating cavity 400 provided with a heating element 410, the heating cavity 400 is connected to the water storage cavity 300, the water storage cavity 300 is also configured to supply water to the heating cavity 400, and the heating element 410 is configured to make the water in the heating cavity 400 form water vapor.

[0025] The second heat exchanger 140 heats the water in the water storage cavity 300. When the temperature of the water in the water storage cavity 300 is lower than 100 degrees, the heating element 410 is turned on to heat the water in the heating cavity 400, so that the water in the heating cavity 400 boils quickly to generate water vapor. At this time, almost all the heat emitted by the heating element 410 is used to heat the water in the heating cavity 400, and very little heat is lost to the water storage cavity 300. Therefore, the heating efficiency of the heating element 410 is higher and the water vapor is generated faster.

[0026] The second heat exchanger 140 heats the water in the water storage chamber 300. When the temperature of the water in the water storage chamber 300 is not lower than 100 degrees, the heating element 410 is turned off. At this time, the water in the heating chamber 400 will evaporate quickly to form water vapor, so that the energy consumption of the humidification system is lower.

[0027] In some embodiments, Figure 1 and Figure 2As shown, the humidification system further includes: a second water supply passage 500 provided with a second water level control member 510, the second water supply passage 500 is located between the water storage cavity 300 and the heating cavity 400, and connects the water storage cavity 300 and the heating cavity 400, the second water supply passage 500 is configured to controllably supply water from the water storage cavity 300 to the heating cavity 400 through the second water level control member 510, and the second water level control member 510 is configured to keep the water level in the heating cavity 400 at a second set water level. The second water level control member 510 is configured as a float water level controller, and the second set water level is not higher than the top surface of the heating member 410. In this scheme, part of the top area of ​​the heating element 410 is not submerged in water. Therefore, when the heating element 410 is turned on, the temperature of the part of the heating element 410 that is not submerged in water is greater than 100°C, so that the water at the liquid surface in the heating cavity 400 is just vaporized. Therefore, this scheme generates water vapor faster and can achieve rapid humidification. The temperature of the water below the liquid surface in the heating cavity 400 will be lower than 100 degrees. Since the second water supply passage 500 will replenish water into the heating cavity 400 (the temperature of this part of water is generally lower than 100 degrees), this part of water will not boil completely, so the boiling sound generated by the humidification system is smaller.

[0028] In some examples, such as Figure 1 and Figure 2 As shown, the humidification system further includes: a first water supply passage 600, the first water supply passage 600 is connected to the water storage cavity 300, and the first water supply passage 600 is configured to supply water to the water storage cavity 300. The first water supply passage 600 is equipped with a first switch valve 610, a first water level control member 620, a filter and other components, the first switch valve 610 is configured to control the first water supply passage 600 to be opened or closed, the first water level control member 620 is configured to control the water level in the water storage cavity 300 to be maintained at a first set water level, and the filter is configured to filter impurities in the water.

[0029] The first switch valve 610 is opened: when the water level in the water storage chamber 300 is lower than the first set water level, the first water level control component 620 is opened, and water is supplied into the water storage chamber 300 from the first water supply passage 600; when the water level in the water storage chamber 300 is not lower than the first set water level, the first water level control component 620 is closed, and at this time the first water supply passage 600 cannot supply water to the water storage chamber 300.

[0030] It is possible that the first water level control component 620 is set as a float water level switch or a high and low water level switch, etc., which can achieve the purpose of this application. Its purpose does not deviate from the design concept of the utility model and will not be repeated here. It should all fall within the protection scope of this application.

[0031] In some examples, the humidification system further includes: a drainage module, which is configured to controllably drain the water in the heating chamber 400 and the water storage chamber 300. Figure 1 and Figure 2 As shown, the drainage module includes: a water receiving tray 710; and a drainage passage 720 provided with a third switch valve 721, the drainage passage 720 is connected to the heating cavity 400, and the drainage passage 720 is configured to controllably drain the water in the heating cavity 400 and the water storage cavity 300 to the water receiving tray 710 through the third switch valve 721, so as to prevent the water in the heating cavity 400 and the water storage cavity 300 from forming trapped water and breeding bacteria. Wherein, when the third switch valve 721 is opened, the first switch valve 610 needs to be closed.

[0032] The heating element 410 may be configured as a resistance heater, an infrared heater or an electromagnetic heater, etc., and the second heat exchanger 140 may be configured as a plate heat exchanger or a tubular heat exchanger or a heat exchange tube, etc.; all of the above may achieve the purpose of the present application, and their purpose does not deviate from the design concept of the present utility model, and will not be repeated here, and all shall fall within the protection scope of the present application.

[0033] The exhaust steam passage 200 is provided with a second switch valve 210, and the second switch valve 210 is configured to control the exhaust steam passage 200 to be turned on or off.

[0034] The air conditioner provided in the embodiment of the present application is as follows: Figure 1 and Figure 2 As shown, it includes the humidification system described in any of the above embodiments.

[0035] This air conditioner has all the advantages of the humidification system provided by any of the above embodiments, which will not be described in detail here.

[0036] In some examples, such as Figure 1 As shown, the air conditioner further includes: a third heat exchanger 820 and a four-way valve 830, the second heat exchanger 140, the third heat exchanger 820 and the first throttling component 130 are sequentially connected to form a first passage, and the first passage and the compressor 110 are connected through the four-way valve 830. Among them, the first throttling component 130 is an electronic expansion valve, and the third switch valve 721 is normally closed.

[0037] In the heating mode, the refrigerant flowing out of the outlet of the compressor 110 passes through the second heat exchanger 140, the third heat exchanger 820, the first throttling component 130, and the first heat exchanger 120 in sequence, and then flows back to the compressor 110 from the inlet of the compressor 110. The humidification mode is usually operated only in the heating mode, and not in the cooling mode.

[0038] The four-way valve 830, the compressor 110 and the first heat exchanger 120 constitute a part of the outdoor unit of the air conditioner, and the third heat exchanger 820 constitutes a part of the indoor unit of the air conditioner.

[0039] In some embodiments, Figure 1 As shown, the air conditioner indoor unit and the steam exhaust passage 200 comprise a set, the steam exhaust passage 200 is connected to the air duct of the air conditioner indoor unit, and the steam exhaust passage 200 is provided with a second switch valve 210. Figure 3 As shown, the air conditioner provided in this embodiment, the control method thereof includes:

[0040] In response to the humidification mode operation, the first switch valve 610 is opened, the second switch valve 210 is opened, and the current operation mode of the air conditioner is obtained;

[0041] Based on the current operation mode being the cooling mode, the heating element 410 is operated;

[0042] Based on the current operation mode being the heating mode, the temperature t of the water in the water storage chamber 300 is obtained;

[0043] Based on t<T2, the heating element 410 is operated;

[0044] Based on t≥T2, the heating element 410 is turned off;

[0045] Get the indoor air humidity a;

[0046] Based on a<humidity threshold value A1, the step of obtaining the current operation mode of the air conditioner is performed;

[0047] If a≥humidity threshold A1, the heating element 410 is turned off, the second switch valve 210 is closed, and the humidification stop time m is recorded;

[0048] Get the indoor air humidity a again;

[0049] Based on m<time threshold M and a<A2, then m=0, and then the step of obtaining the current operation mode of the air conditioner is performed;

[0050] Based on m≥time threshold M, then m=0, then close the first switch valve 610, open the third switch valve 721, and close the third switch valve 721 after the first set time M1;

[0051] Wherein, A2<A1. T2 may be set to 100 degrees; M may be set to 15 minutes, 30 minutes, 60 minutes, 90 minutes, etc.

[0052] like Figure 3 As shown, when the air conditioner is not running, only the heating element 410 is operated to humidify the indoor air, and the compressor 110 is not started.

[0053] Of course, it is also possible that the air-conditioning indoor units and the steam exhaust passages 200 include multiple groups arranged in a one-to-one correspondence, and the multiple steam exhaust passages 200 are connected to the air ducts of the multiple air-conditioning indoor units in a one-to-one correspondence. Each steam exhaust passage 200 is provided with a second switch valve 210, which can also achieve the purpose of the present application. Its purpose does not deviate from the design concept of the present invention and will not be repeated here. It should all fall within the protection scope of the present application.

[0054] In other examples, such as Figure 2 As shown, the air conditioner also includes a second throttling component 810, a third heat exchanger 820 and a four-way valve 830. The second heat exchanger 140 and the first throttling component 130 form a parallel passage with the third heat exchanger 820 and the second throttling component 810. The parallel passage is connected in series with the first heat exchanger 120 to form a second passage. The second passage and the compressor 110 are connected through the four-way valve 830. The third heat exchanger 820 is located between the second throttling component 810 and the first heat exchanger 120, and the second heat exchanger 140 is located between the first throttling component 130 and the first heat exchanger 120.

[0055] In the heating mode, the refrigerant flowing out of the outlet of the compressor 110 passes through the parallel path and the first heat exchanger 120 in sequence, and then flows back to the compressor 110 from the inlet of the compressor 110. The humidification mode is usually operated only in the heating mode, and not in the cooling mode.

[0056] The four-way valve 830, the compressor 110 and the first heat exchanger 120 constitute a part of the outdoor unit of the air conditioner, and the third heat exchanger 820 constitutes a part of the indoor unit of the air conditioner.

[0057] In some embodiments, Figure 2 As shown, the air conditioner indoor unit and the steam exhaust passage 200 comprise a set, the steam exhaust passage 200 is connected to the air duct of the air conditioner indoor unit, and the steam exhaust passage 200 is provided with a second switch valve 210. Figure 4 As shown, the air conditioner provided in this embodiment, the control method thereof includes:

[0058] In response to the humidification mode operation, the first switch valve 610 is opened, the second switch valve 210 is opened, and the current operation mode of the air conditioner is obtained;

[0059] Based on the current operation mode being the cooling mode, the heating element 410 is operated, the first throttling component 130 is closed, and the second throttling component 810 is opened;

[0060] Based on the current operation mode being the heating mode, the first throttle component 130 is opened, and the second throttle component 810 is opened or closed to obtain the temperature t of the water in the water storage chamber 300;

[0061] Based on t<T2, the heating element 410 is operated;

[0062] Based on t≥T2, the heating element 410 is turned off;

[0063] Get the indoor air humidity a;

[0064] Based on a<humidity threshold value A1, the step of obtaining the current operation mode of the air conditioner is performed;

[0065] Based on a≥humidity threshold A1, the heating element 410 is turned off, the second switch valve 210 is turned off, the first throttling component 130 is turned off, the second throttling component 810 is turned on, and the humidification stop time m is recorded;

[0066] Get the indoor air humidity a again;

[0067] Based on m<time threshold M and a<A2, then m=0, and then the step of obtaining the current operation mode of the air conditioner is performed;

[0068] Based on m≥time threshold M, then m=0, then close the first switch valve 610, open the third switch valve 721, and close the third switch valve 721 after the first set time M1;

[0069] Wherein, A2<A1. T2 may be set to 100 degrees; M may be set to 15 minutes, 30 minutes, 60 minutes, 90 minutes, etc.

[0070] When the air conditioner is not running, only the heating element 410 is operated to humidify the indoor air, and the compressor 110 is not started. At this time, the control method of the heating element 410 is the same as the control method of the heating element 410 in the control method of the previous embodiment.

[0071] Of course, it is also possible that the air-conditioning indoor units and the steam exhaust passages 200 include multiple groups arranged in a one-to-one correspondence, and the multiple steam exhaust passages 200 are connected to the air ducts of the multiple air-conditioning indoor units in a one-to-one correspondence. Each steam exhaust passage 200 is provided with a second switch valve 210, which can also achieve the purpose of the present application. Its purpose does not deviate from the design concept of the present invention and will not be repeated here. It should all fall within the protection scope of the present application.

[0072] To summarize, in the humidification system provided in the embodiment of the present application, the heat pump module is running, and the refrigerant flowing out from the outlet of the compressor passes through the second heat exchanger, the first throttling component and the first heat exchanger in sequence, and then flows back to the compressor from the inlet of the compressor. In the process of the refrigerant passing through the second heat exchanger, it releases heat to heat the water contained in the containing cavity, and the heating element also heats the water in the containing cavity, so that the water in the containing cavity can boil more quickly to form water vapor, and the water vapor is discharged through the steam exhaust passage. The humidification system of this scheme generates water vapor faster, and rapid humidification can be achieved.

[0073] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0074] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0075] In the description of the present application, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0076] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0079] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A humidification system, characterized in that: include: A heat pump module comprises a compressor, a second heat exchanger, a first throttling component and a first heat exchanger connected in sequence; A housing cavity is provided with a heating element, the second heat exchanger is provided in the housing cavity, the housing cavity is configured to accommodate water, the second heat exchanger is configured to exchange heat with the water in the housing cavity, and the heating element is configured to convert the water in the housing cavity into water vapor; and The steam exhaust passage is communicated with the accommodating cavity and is configured to exhaust the water vapor in the accommodating cavity.

2. The humidification system according to claim 1, characterized in that: The accommodating cavity comprises: a water storage cavity, wherein the second heat exchanger is disposed in the water storage cavity, the water storage cavity is configured to store water, and the second heat exchanger is configured to exchange heat with the water in the water storage cavity; and The heating cavity provided with the heating element is communicated with the water storage cavity. The water storage cavity is also configured to supply water to the heating cavity. The heating element is configured to make the water in the heating cavity form water vapor.

3. The humidification system according to claim 2, characterized in that: Also includes: A second water supply passage with a second water level control component is provided, connecting the water storage chamber and the heating chamber, and is configured to supply water from the water storage chamber to the heating chamber in a controlled manner through the second water level control component, and the second water level control component is configured to keep the water level in the heating chamber at a second set water level.

4. The humidification system according to claim 3, characterized in that: The second set water level is not higher than the top surface of the heating element.

5. The humidification system according to any one of claims 2 to 4, characterized in that: Also includes: The first water supply passage is communicated with the water storage cavity and is configured to supply water to the water storage cavity.

6. The humidification system according to claim 5, characterized in that: The first water supply passage is equipped with a first switch valve and a first water level control component, the first switch valve is configured to control the first water supply passage to be opened or closed, and the first water level control component is configured to control the water level in the water storage chamber to remain at a first set water level.

7. The humidification system according to any one of claims 2 to 4, characterized in that: Also includes: Drain tray; and A drainage passage with a third switch valve is provided, which is communicated with the heating cavity and is configured to controllably drain the water in the heating cavity to the water receiving tray through the third switch valve.

8. The humidification system according to any one of claims 1 to 4, characterized in that: The heating element is a resistance heater, an infrared heater or an electromagnetic heater, and the second heat exchanger is a plate heat exchanger or a tube heat exchanger.

9. An air conditioner, characterized in that: Comprising a humidification system as claimed in any one of claims 1 to 8.

10. The air conditioner according to claim 9, characterized in that: The air conditioner further comprises a third heat exchanger and a four-way valve, the second heat exchanger, the third heat exchanger and the first throttling component are sequentially connected to form a first passage, and the first passage and the compressor are connected through the four-way valve; or The air conditioner also includes a second throttling component, a third heat exchanger and a four-way valve, the second heat exchanger and the first throttling component form a parallel passage with the third heat exchanger and the second throttling component, the parallel passage is connected in series with the first heat exchanger to form a second passage, and the second passage and the compressor are connected through the four-way valve; wherein the third heat exchanger is located between the second throttling component and the first heat exchanger, and the second heat exchanger is located between the first throttling component and the first heat exchanger.

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