Air conditioner outdoor unit, air conditioner and control method of air conditioner

Abstract

The invention provides an air conditioner outdoor unit, an air conditioner and a control method thereof. The air conditioner outdoor unit comprises a base plate and a condenser, and the base plate is provided with a water storage tank, a diversion trench and a drainage hole which are sequentially communicated; the air conditioner outdoor unit is further provided with a condensation part, condensate water generated by the condensation part can flow into the water storage tank, and when the water level in the water storage tank is higher than a first preset height, water in the water storage tank can flow to the flow guide groove under the action of gravity and is discharged from the drainage hole. The bottom of the condenser is arranged in the flow guide groove, so that the technical problem that in the prior art, when an air conditioner is in a refrigeration or dehumidification state, condensate water generated by an outdoor unit cannot be effectively utilized can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner outdoor unit, an air conditioner and a control method thereof. Background Art

[0002] When a traditional split air conditioner is running in cooling (dehumidification) mode, low-temperature refrigerant flows through the connecting pipe and the external valve, and the coldness of the refrigerant is transferred to the connecting pipe, valve and valve bracket by heat conduction. The outer surface temperature of the connecting pipe, valve and valve bracket is lower than the dew point temperature of the outside environment, so a large amount of condensed water will be generated on the outer surface of the connecting pipe, valve and valve bracket. When the air conditioner is running for a long time, a large amount of condensed water condensed on the outer surface of the connecting pipe, valve and valve bracket will drip from the valve or slide down the valve bracket due to gravity. For the treatment of this part of condensed water, the usual practice now is to discharge the condensed water to a specific area through a drain pipe.

[0003] Discharging this part of condensed water wastes the cooling capacity of the condensed water. How to effectively recover this part of cooling capacity is a technical problem that needs to be solved urgently. Summary of the invention

[0004] Therefore, the present invention provides an air conditioner outdoor unit, an air conditioner and a control method thereof, which can solve the technical problem in the prior art that condensed water generated by the outdoor unit of the air conditioner cannot be effectively utilized when the air conditioner is in a cooling or dehumidifying state.

[0005] In the first aspect, the present invention provides an air-conditioning outdoor unit, comprising a chassis and a condenser, wherein the chassis is provided with a water storage tank, a guide groove and a drainage hole which are connected in sequence; the air-conditioning outdoor unit is also provided with a condensation part, and the condensed water generated by the condensation part can flow into the water storage tank. When the water level in the water storage tank is higher than a first preset height, the water in the water storage tank can flow into the guide groove under the action of gravity and be discharged from the drainage hole; the bottom of the condenser is arranged in the guide groove.

[0006] In some embodiments, the direction in which condensed water flows in the guide groove is a first direction, the condenser includes a plurality of fins, the horizontal extension direction of the fins is a second direction, and the second direction intersects with the first direction.

[0007] In some embodiments, an atomization device is provided in the guide groove.

[0008] In some embodiments, the air conditioner outdoor unit is further provided with an outdoor fan, and the operation of the outdoor fan can enable the water mist generated by the atomization device to flow through the condenser.

[0009] In some embodiments, the head end of the guide groove is connected to the water storage tank, the tail end of the guide groove is connected to the drainage hole, and the tail end is provided with a drainage valve that controls the connection between the guide groove and the drainage hole.

[0010] In some embodiments, the condensation part includes a large valve, a small valve and a valve bracket, the large valve and the small valve are fixed on the valve bracket, and the downward projections of the valve bracket, the large valve and the small valve are all in the water storage tank.

[0011] In a second aspect, the present invention further provides an air conditioner, comprising an air conditioner indoor unit, an air conditioner outdoor unit and a connecting pipe, wherein the connecting pipe serves as a refrigerant pipeline connecting the air conditioner indoor unit and the air conditioner outdoor unit, and the connecting pipe gradually extends downward from indoors to outdoors.

[0012] In a third aspect, the present invention provides a control method for an air conditioner. When an atomizing device and a drain valve are provided, a first water level sensor is provided at the head end of the guide groove. The control method comprises: when the air conditioner turns on the cooling mode or the dehumidification mode, the drain valve is controlled to be closed, and the first water level sensor is controlled to obtain the water level height at the head end of the guide groove as H1, and when H1≥H3, the atomizing device is controlled to be turned on; H3 is the minimum water level when the atomizing device can perform a preset working time.

[0013] In some embodiments, a second water level sensor is provided at the tail end of the guide groove. When H1>H3, the control method further includes: controlling the second water level sensor to obtain the water level height of the tail end of the guide groove as H2, and when H2≥H4, controlling the drain valve to open; H4 is the maximum depth of condensed water in the guide groove.

[0014] In some embodiments, a first temperature sensor is provided at the tail of the guide groove, and a second temperature sensor is provided at the condenser. The control method further includes: when H2<H4, controlling the first temperature sensor to obtain the temperature T1 of the condensed water at the tail of the guide groove, and controlling the second temperature sensor to obtain the temperature T2 of the condenser, the temperature difference between T2 and T1 △T=T2-T1, when △T<T0, controlling the drain valve to open; T0 is a preset temperature difference value.

[0015] In some embodiments, after the drain valve is opened, the control method includes: when H1<H3, or / and ΔT>T0+K, controlling the drain valve to close.

[0016] When the air conditioner is cooling or dehumidifying, the local temperature of the outdoor unit is low and condensed water will be produced. This part of the condensed water is collected in the water storage tank, and the condensed water enters the guide groove from the water storage tank. Since the lower end of the condenser is arranged in the guide groove, the condensed water contacts the condenser and exchanges heat with the condenser, thereby improving the heat exchange efficiency of the condenser. In this way, the utilization efficiency of the condensed water is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 This is a schematic diagram of a chassis and a valve support in an embodiment of the present invention when a valve cover is provided on the chassis and the valve support;

[0019] Figure 2 It is a schematic diagram of a chassis, a condenser, a large valve, a small valve and an inventive bracket of an embodiment of the present invention when they are assembled together;

[0020] Figure 3 The embodiment of the present invention Figure 2 Schematic diagram when the large valve, small valve and condenser are removed;

[0021] Figure 4 is a schematic diagram of a chassis of an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of a flow chart of the operation of the air conditioner according to an embodiment of the present invention;

[0023] The accompanying drawings are marked as follows:

[0024] 1. Chassis; 2. Condenser; 301. Water storage tank; 302. Diversion tank; 303. Drain hole; 401. First water diversion tank; 402. Second water diversion tank; 5. Atomizing device; 6. Drain valve; 7. Valve bracket; 701. Large valve; 702. Small valve; 801. Fin; 802. U-shaped tube; 803. Valve cover. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0029] See also Figure 1-5As shown, an air-conditioning outdoor unit includes a chassis 1 and a condenser 2, wherein the chassis 1 is provided with a water storage tank 301, a guide groove 302 and a drainage hole 303 which are connected in sequence; the air-conditioning outdoor unit is also provided with a condensation part, and the condensed water generated by the condensation part can flow into the water storage tank 301. When the water level in the water storage tank 301 is higher than a first preset height, the water in the water storage tank 301 can flow into the guide groove 302 under the action of gravity and be discharged from the drainage hole 303; the bottom of the condenser 2 is arranged in the guide groove 302.

[0030] By setting the guide groove 302, the water storage tank 301 and the drainage hole 303 on the chassis 1, when the air conditioner is turned on the cooling or dehumidification mode, the temperature of the condensation part is low and condensed water is easily generated. The condensed water flows downward into the water storage tank 301. The water storage tank 301 is used to collect the condensed water generated by the condensation part (the condensation part includes but is not limited to the large valve 701, the small valve 702, the valve bracket 7, and the refrigerant connecting pipe between the indoor and outdoor units on the outdoor unit). The condensed water in the water storage tank 301 enters the guide groove 302 and flows to the drainage hole 303.

[0031] The condensed water contacts the bottom of the condenser 2 in the guide groove 302, and heat exchange occurs between the condensed water and the condenser 2. On the one hand, the heat release of the condenser 2 to the outside is accelerated (the cold is absorbed from the outside), and the cold of the condensed water is recovered; on the other hand, the condensed water evaporates due to the heat and directly enters the atmosphere, which reduces the discharge of the condensed water and avoids the adverse effects caused by the discharge of the condensed water. After the condensed water flows through the guide groove 302, it is discharged from the drain hole 303. Specifically, a drain pipe can be set at the drain hole 303, and the outlet of the drain pipe can directly lead to the ground or to the rainwater pipe on the outer wall of the building.

[0032] A guide groove 302 and a water storage groove 301 are set on the chassis 1, and these groove structures can improve the structural strength of the chassis 1; the bottom of the condenser 2 is set in the guide groove 302, which can effectively reduce the overall height of the air-conditioning outdoor unit; the condenser 2 of the present application absorbs cold energy from the condensed water, and under the condition of the same heat exchange efficiency, the overall volume of the condenser 2 can be made smaller. Specifically, the condenser 2 includes a U-shaped tube 802 for refrigerant circulation, and the fin 801 is set on the U-shaped tube 802. A plurality of U-shaped tubes 802 are arranged from top to bottom. Under the same heat exchange efficiency as the prior art, the number of U-shaped tubes 802 can be reduced, saving costs; in addition, reducing the number of U-shaped tubes 802 can reduce the height of the condenser 2 and the outdoor unit, increase the cabinet loading capacity, and reduce transportation costs.

[0033] The guide groove 302 also has a limiting effect on the condenser 2, thereby improving the stability of the condenser 2 on the chassis 1, reducing the vibration of the condenser 2, further alleviating the pipeline fatigue caused by the vibration, and improving the reliability and service life of the air conditioner.

[0034] The "upper" and "lower" in this application are directions defined with reference to the state when the air conditioner is working normally.

[0035] Preferably, Figure 2 As shown, the direction in which condensed water flows in the guide groove 302 is a first direction, the condenser 2 includes a plurality of fins 801, and the horizontal extension direction of the fins 801 is a second direction, and the second direction intersects with the first direction.

[0036] By making the horizontal extension direction of the fin 801 intersect with the flow direction of the condensed water, the flow speed of the condensed water in the guide groove 302 is slowed down, and the condensed water can fully exchange heat with the fin 801 (the fin 801 through which the condensed water flows) and the U-shaped tube 802 (the U-shaped tube 802 through which the condensed water flows), thereby improving the efficiency of recovering the cooling capacity of the condensed water.

[0037] Specifically, the width of the guide groove 302 is slightly greater than the width of the fin 801 , and the fin 801 is in substantial contact with two side edges of the guide groove 302 or is in clearance fit with the two side edges of the guide groove 302 .

[0038] Preferably, Figure 4 As shown, an atomization device 5 is provided in the guide groove 302 .

[0039] The condensed water in the guide groove 302 is atomized by the atomizing device 5, and the atomized water vapor floats upward to expand the contact area with the condenser 2. On the one hand, the water mist has a low temperature and can directly absorb the heat of the condenser 2. On the other hand, the water mist evaporates quickly after contacting the condenser 2 (liquid water changes to gas, phase change) and can further absorb heat. On the third hand, a part of the water mist floats into the air to lower the temperature of the air (air containing the water mist), and this part of the air can further lower the temperature of the condenser 2 when it flows through the condenser 2. In this way, the recovery of the cooling capacity of the condensed water is further improved.

[0040] Furthermore, the atomizing device 5 includes: a micro water pump, a conduit, and an atomizing injector; specifically, the micro pump works to pump the low-temperature condensed water in the guide groove 302 to the atomizing injector through the conduit, and the atomizing injector is provided with a plurality of injection holes at intervals around the circumference, and the atomizing injector sprays the low-temperature condensed water through the injection holes to form low-temperature water mist.

[0041] Preferably, the air-conditioning outdoor unit is further provided with an outdoor fan, and the operation of the outdoor fan can enable the water mist generated by the atomizing device 5 to flow through the condenser 2.

[0042] The outdoor fan can not only speed up the flow of air through the condenser 2, but also has at least the following two functions. On the one hand, it increases the amount of water mist in contact with the condenser 2 and reduces the water mist drifting to other directions and unable to contact the condenser 2; on the other hand, it speeds up the evaporation rate of water adhering to the condenser 2, further improving the cooling efficiency of the condenser 2.

[0043] Preferably, Figure 4 As shown, the head end of the guide groove 302 is connected to the water storage tank 301, and the tail end of the guide groove 302 is connected to the drainage hole 303. The tail end is provided with a drainage valve 6 for controlling the connection between the guide groove 302 and the drainage hole 303.

[0044] When the drain valve 6 is closed, the condensed water can be gradually collected in the guide groove 302, thereby preventing the condensed water from being lost quickly, increasing the contact time between the condensed water and the condenser 2, and improving the heat exchange efficiency between the condensed water and the condenser 2. When the water level of the condensed water is too high or the water temperature is high and the condensed water needs to be discharged, the drain valve 6 can be opened, and the condensed water is discharged from the guide groove 302 to the drain hole 303.

[0045] Preferably, Figure 2 As shown, the condensation part includes a large valve 701, a small valve 702 and a valve bracket 7. The large valve 701 and the small valve 702 are fixed on the valve bracket 7. The downward projections of the valve bracket 7, the large valve 701 and the small valve 702 are all in the water storage tank 301.

[0046] Since the downward projections of the valve bracket 7, the large valve 701 and the small valve 702 are in the water storage tank 301, the condensed water on the valve bracket 7, the large valve 701 and the small valve 702 can enter the water storage tank 301 under the action of gravity.

[0047] Since the valve bracket 7 is located outside the air conditioner outdoor unit, the water storage tank 301 is also directly connected to the atmosphere. When it rains outside, rainwater can directly enter the water storage tank 301, or enter the water storage tank 301 along the large valve 701, the small valve 702 and the valve bracket 7. The water entering the water storage tank 301 can exchange heat with the condenser 2 after flowing into the guide groove 302, thereby improving the heat exchange efficiency of the condenser 2. Especially in the rainy season in the south, there is more rain outside and it is relatively humid indoors. At this time, the air conditioner turns on the dehumidification function, and the external rainwater enters the guide groove 302 and exchanges heat with the condenser 2. The heat exchange efficiency of the condenser 2 is greatly improved, thereby improving the dehumidification efficiency.

[0048] When the valve cover 803 is provided, the lower end of the valve cover 803 is an inclined surface, and the condensed water on the valve cover 803 flows into the water storage tank 301 along the inclined surface.

[0049] The present invention also provides an air conditioner, comprising an air conditioner indoor unit, the air conditioner outdoor unit and a connecting pipe, wherein the connecting pipe serves as a refrigerant pipeline connecting the air conditioner indoor unit and the air conditioner outdoor unit, and the connecting pipe gradually extends downward from indoors to outdoors.

[0050] The condensed water generated on the connecting pipe flows toward the outdoor unit of the air conditioner under the action of gravity, and flows downward into the water storage tank 301, thereby recovering the cold energy of the condensed water generated by the connecting pipe.

[0051] Preferably, Figure 5 As shown, when an atomizing device 5 and a drain valve 6 are provided, a first water level sensor is provided at the head end of the guide groove 302, and the control method includes: when the air conditioner turns on the cooling mode or the dehumidification mode, the drain valve 6 is controlled to be closed, and the first water level sensor is controlled to obtain the water level height at the head end of the guide groove 302 as H1, and when H1≥H3, the atomizing device 5 is controlled to be turned on; H3 is the minimum water level when the atomizing device 5 can perform the preset working time.

[0052] The water storage tank 301 and the head end of the guide tank 302 can be communicated through the first water diversion tank 401 , and the drainage hole 303 and the tail end of the guide tank 302 can be communicated through the second water diversion tank 402 .

[0053] The drain valve 6 is closed, so that the condensed water in the water storage tank 301 flows into the guide groove 302 and is collected. The condensed water flows from the head end to the tail end of the guide groove 302, and exchanges heat with the condenser 2 during the flow. A part of the condensed water evaporates after direct contact with the condenser 2 for heat exchange, and a part of the condensed water is consumed by the atomizing device 5, which makes the condensed water gradually decrease during the flow in the guide groove 302. However, due to the short length of the guide groove 302, the water level difference between the two ends of the guide groove 302 is small. Considering this situation, the water level at the head end of the guide groove 302 is obtained as H1, and when H1≥H3, it means that the amount of condensed water in the guide groove 302 is basically sufficient, and the atomizing device 5 can be controlled to open to atomize the condensed water in the guide groove 302; H3 is the minimum water level when the atomizing device 5 can perform the preset working time.

[0054] The first temperature sensor and the second temperature sensor may be temperature sensing packages.

[0055] Furthermore, the chassis 1 is integrally formed, and the water storage groove 301, the guide groove 302, the first water diversion groove 401 and the second water diversion groove 402 are all formed by stamping.

[0056] Preferably, Figure 5As shown, a second water level sensor is provided at the tail end of the guide groove 302. When H1>H3, the control method further includes: controlling the second water level sensor to obtain the water level height of the tail end of the guide groove 302 as H2, and when H2≥H4, controlling the drain valve 6 to open; H4 is the maximum depth of condensed water in the guide groove 302.

[0057] As the condensed water in the guide groove 302 is atomized, some condensed water gradually enters the guide groove 302. As can be seen from the above, the water level at the tail end of the guide groove 302 is lower than the water level at the head end. The second water level sensor is controlled to obtain the water level height at the tail end of the guide groove 302 as H2. When H2≥H4, the water level in the guide groove 302 is high and needs to be discharged in time, otherwise it will overflow from the guide groove 302, and the drain valve 6 is controlled to open; H4 is the maximum depth allowed for the condensed water in the guide groove 302. This maximum depth is not the maximum depth of the guide groove 302. The maximum depth allowed for the condensed water in the guide groove 302 is smaller than the depth of the guide groove 302.

[0058] Preferably, Figure 5 As shown, a first temperature sensor is provided at the tail of the guide groove 302, and a second temperature sensor is provided at the condenser 2. The control method further includes: when H2<H4, controlling the first temperature sensor to obtain the temperature T1 of the condensed water at the tail of the guide groove 302, controlling the second temperature sensor to obtain the temperature T2 of the condenser 2, the temperature difference between T2 and T1 △T=T2-T1, when △T<T0, controlling the drain valve 6 to open; T0 is a preset temperature difference value.

[0059] As the condensed water and the condenser 2 exchange heat, the temperature of the condensed water gradually increases. When the temperature of the condensed water is high, since the condensed water covers part of the condenser 2, the heat exchange efficiency between the high temperature condensed water and the condenser 2 is lower than the heat exchange efficiency between the air and the condensed water. When H2<H4, the water level of the condensed water is within a reasonable range. The first temperature sensor is controlled to obtain the temperature T1 of the condensed water at the tail of the guide groove 302, and the second temperature sensor is controlled to obtain the temperature T2 of the condenser 2. The temperature difference △T between T2 and T1 is △T=T2-T1. When △T<T0, it means that the temperature difference between the condensed water and the condenser 2 is small, which is not conducive to the cooling of the condenser 2. At this time, the drain valve 6 is controlled to open, and the condensed water flows from the tail end of the guide groove 302 into the second water diversion groove 402, and finally discharged from the drain hole 303; T0 is a preset temperature difference value, which can be set according to demand, and the value range is between 4℃ and 15℃. .

[0060] Preferably, Figure 5As shown, when the drain valve 6 is opened, the control method includes: when H1<H3, or / and, △T>T0+K, controlling the drain valve 6 to close.

[0061] After the drain valve 6 is opened, the water level in the guide groove 302 drops, and new condensed water enters the guide groove 302. The water temperature in the guide groove 302 will inevitably drop. When H1<H3, the water level is low, the drain valve 6 is closed, and the newly generated condensed water continues to gather in the guide groove 302, ensuring that the atomization device 5 can normally atomize the condensed water.

[0062] After the drain valve 6 is opened, the condensed water in the water storage tank 301 gradually enters the guide groove 302, causing the temperature in the guide groove 302 to gradually decrease. Since the condensed water in the guide groove 302 is also flowing out, the water level in the guide groove 302 is also gradually decreasing. When △T>T0+K, the temperature of the water in the guide groove 302 is relatively low, and H2 must be smaller than H4. At this time, the drain valve 6 is controlled to be closed, and the newly generated condensed water continues to gather in the guide groove 302 to ensure that the atomization device 5 can normally atomize the condensed water.

[0063] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. An air conditioner outdoor unit, comprising a chassis (1) and a condenser (2), characterized in that: The chassis (1) is provided with a water storage tank (301), a guide groove (302) and a drainage hole (303) which are connected in sequence; the air conditioner outdoor unit is also provided with a condensation section, and condensed water generated by the condensation section can flow into the water storage tank (301); when the water level in the water storage tank (301) is higher than a first preset height, the water in the water storage tank (301) can flow into the guide groove (302) under the action of gravity and be discharged from the drainage hole (303); the bottom of the condenser (2) is arranged in the guide groove (302).

2. The air conditioner outdoor unit according to claim 1, characterized in that: The direction in which condensed water flows in the guide groove (302) is a first direction, the condenser (2) comprises a plurality of fins (801), the fins (801) extend in a horizontal direction in a second direction, and the second direction intersects with the first direction.

3. The air conditioner outdoor unit according to claim 1, characterized in that: An atomizing device (5) is arranged in the guide groove (302).

4. The air conditioner outdoor unit according to claim 3, characterized in that: The air conditioner outdoor unit is also provided with an outdoor fan, and the operation of the outdoor fan can cause the water mist generated by the atomizing device (5) to flow through the condenser (2).

5. The air conditioner outdoor unit according to claim 1, characterized in that: The head end of the guide groove (302) is connected to the water storage groove (301), and the tail end of the guide groove (302) is connected to the drainage hole (303). The tail end is provided with a drainage valve (6) for controlling the connection between the guide groove (302) and the drainage hole (303).

6. The air conditioner outdoor unit according to any one of claims 1 to 5, characterized in that: The condensation part comprises a large valve (701), a small valve (702) and a valve bracket (7); the large valve (701) and the small valve (702) are fixed on the valve bracket (7); downward projections of the valve bracket (7), the large valve (701) and the small valve (702) are all located in the water storage tank (301).

7. An air conditioner, characterized in that: It comprises an air-conditioning indoor unit, an air-conditioning outdoor unit as described in any one of claims 1 to 6, and a connecting pipe, wherein the connecting pipe serves as a refrigerant pipeline to connect the air-conditioning indoor unit and the air-conditioning outdoor unit, and the connecting pipe gradually extends downward from indoors to outdoors.

8. A control method for the air conditioner according to claim 7, characterized in that: When an atomizing device (5) and a drainage valve (6) are provided, a first water level sensor is provided at the head end of the guide groove (302), and the control method comprises: when the air conditioner is turned on in cooling mode or dehumidification mode, the drainage valve (6) is controlled to be closed, and the first water level sensor is controlled to obtain a water level height H1 at the head end of the guide groove (302), and when H1≥H3, the atomizing device (5) is controlled to be turned on; H3 is the minimum water level at which the atomizing device (5) can operate for a preset working time.

9. The air conditioner control method according to claim 8, characterized in that: A second water level sensor is provided at the tail end of the guide groove (302); when H1>H3, the control method further comprises: controlling the second water level sensor to obtain the water level height at the tail end of the guide groove (302) as H2; when H2≥H4, controlling the drain valve (6) to open; H4 is the maximum depth of condensed water in the guide groove (302).

10. The air conditioner control method according to claim 9, characterized in that: The tail of the guide groove (302) is provided with a first temperature sensor, and the condenser (2) is provided with a second temperature sensor. The control method further comprises: when H2<H4, controlling the first temperature sensor to obtain the temperature T1 of the condensed water at the tail of the guide groove (302), controlling the second temperature sensor to obtain the temperature T2 of the condenser (2), the temperature difference between T2 and T1 △T=T2-T1, and when △T<T0, controlling the drain valve (6) to open; T0 is a preset temperature difference value.

11. The air conditioner control method according to claim 10, characterized in that: When the drainage valve (6) is opened, the control method comprises: when H1<H3, or / and ΔT>T0+K, controlling the drainage valve (6) to be closed.

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