Air conditioner indoor unit and air conditioner

Abstract

The application discloses an indoor unit of an air conditioner, which comprises an indoor unit shell, a liquid storage tank, a heater, a gas-liquid separation device and a nozzle, the heater is connected with the liquid storage tank to heat and vaporize liquid discharged from the liquid storage tank, the gas-liquid separation device is connected with the heater to perform gas-liquid separation on mixed gas discharged from the heater, and the nozzle is arranged at an air inlet or / and fresh air outlet of the indoor unit shell and connected with an exhaust port of the gas-liquid separation device. The structure can consider gas-liquid separation function and avoid the phenomenon of water spraying when the indoor unit of the air conditioner works.

Description

Technical Field

[0001] This invention relates to the field of air conditioning, and in particular to an indoor unit for air conditioning. Background Technology

[0002] Currently, the conventional solution for air conditioners with humidification functions is to place the steam nozzle at the air inlet of the main air duct or the fresh air outlet to humidify the circulating air and accelerate the diffusion of water molecules in the air, so as to achieve the effect of uniformly humidifying the room air.

[0003] Currently, air conditioners with humidification functions typically use PTC as the heating element. Because PTC heats up relatively slowly, some water cannot be completely evaporated in the initial stage of steam module startup, and liquid water will spray out from the steam nozzle, affecting the user experience. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide an air conditioner indoor unit. This air conditioner indoor unit allows users to directly observe the generation of water mist, while also incorporating gas-liquid separation functionality, thus preventing water spraying during use.

[0005] An indoor air conditioning unit according to the present invention includes: an indoor unit housing, a liquid storage tank, and a heater, the heater being connected to the liquid storage tank to heat and vaporize liquid discharged from the liquid storage tank; a gas-liquid separation device and a nozzle, the gas-liquid separation device being connected to the heater to separate a mixed gas discharged from the heater, the nozzle being disposed at the air inlet and / or fresh air outlet of the indoor unit housing and connected to the exhaust port of the gas-liquid separation device.

[0006] According to the present invention, the air conditioner indoor unit is equipped with a gas-liquid separation device, which can separate the incompletely evaporated liquid water, thereby preventing the air conditioner indoor unit from spraying water during operation and improving the user experience.

[0007] According to one embodiment of the present invention, the gas-liquid separation device includes: a gas-liquid separation pipe, a gas-liquid separation chamber provided inside the gas-liquid separation pipe, and an air inlet and an exhaust outlet respectively communicating with the gas-liquid separation chamber, the air inlet being connected to the heater, and the exhaust outlet being connected to the nozzle.

[0008] According to one embodiment of the present invention, the gas-liquid separator is constructed as a transparent tube, and the indoor unit housing includes a panel, wherein the portion of the panel facing the gas-liquid separator in the front-back direction is also constructed as a transparent element.

[0009] According to one embodiment of the present invention, the height of the air inlet is less than the height of the exhaust outlet.

[0010] According to one embodiment of the present invention, an air inlet pipe is provided between the gas-liquid separation pipe and the heater. The air inlet pipe passes through the top wall of the gas-liquid separation pipe and extends into the interior of the gas-liquid separation pipe. An air inlet is provided at one end of the air inlet pipe located inside the gas-liquid separation pipe, and an exhaust port is provided on the top wall of the gas-liquid separation pipe.

[0011] According to one embodiment of the present invention, an exhaust pipe is provided between the exhaust port and the nozzle, and the cross-sectional area of ​​the gas-liquid separation pipe is larger than the cross-sectional areas of the air inlet pipe and the exhaust pipe.

[0012] According to one embodiment of the present invention, a drain port is further provided on the bottom wall of the gas-liquid separator, and the drain port may be selectively connected to a water storage tank on the indoor unit housing.

[0013] According to one embodiment of the present invention, a float is provided inside the gas-liquid separation tube, and the float is adapted to open the drain port when the liquid volume in the gas-liquid separation tube reaches a preset value.

[0014] According to one embodiment of the present invention, a drain pipe is provided between the drain outlet and the water storage tank, and a guide hole is provided at one end of the drain pipe connected to the drain outlet. The cross-sectional area of ​​the guide hole gradually decreases in the direction away from the center of the gas-liquid separation pipe, and a guide protrusion that cooperates with the guide hole is provided on the bottom wall of the float.

[0015] According to one embodiment of the present invention, a first connecting pipe is provided between the water storage tank and the liquid storage tank, and a first pump body is provided on the first connecting pipe.

[0016] According to one embodiment of the present invention, a filter element is further provided on the first connecting pipe.

[0017] According to one embodiment of the present invention, a second connecting pipe is provided between the liquid storage tank and the heater, and a second pump body is provided on the second connecting pipe.

[0018] The air conditioner according to the present invention includes an indoor unit as described in any of the preceding claims. Because the air conditioner is equipped with the aforementioned indoor unit, the indoor unit emits completely evaporated water vapor, avoiding water spraying and reducing noise generated during humidification, thereby improving the user's experience when using the air conditioner.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the internal structure of an air conditioner indoor unit;

[0022] Figure 2 This is a perspective view of the structure of an indoor unit of an air conditioner according to an embodiment of this application;

[0023] Figure 3 This is a simplified structural diagram of the gas-liquid separation device in the indoor unit of an air conditioner;

[0024] Figure 4 This is a perspective view of the structure of the indoor unit of an air conditioner according to another embodiment of this application;

[0025] Figure 5 This is an enlarged view of the structure of the indoor unit of an air conditioner;

[0026] Figure 6 This is a cross-sectional view of a gas-liquid separation device.

[0027] Figure label:

[0028] Air conditioner indoor unit 100

[0029] Indoor unit housing 110, air inlet 111, panel 112

[0030] Liquid storage tank 120,

[0031] Heater 130

[0032] Gas-liquid separation device 140, gas-liquid separation pipe 141, gas-liquid separation chamber 142, air inlet 143, exhaust port 144, air inlet pipe 145, exhaust pipe 146, liquid outlet 147, float 148, liquid outlet pipe 149.

[0033] 150 nozzles

[0034] First connecting pipe 160, first pump body 161, filter element 162.

[0035] Second connecting pipe 170, second pump body 171. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] The following is for reference. Figures 1-6An indoor air conditioning unit 100 according to an embodiment of the present invention is described.

[0038] An air conditioner indoor unit 100 according to an embodiment of the present invention may include: an indoor unit housing 110, a liquid storage tank 120, a heater 130, a gas-liquid separation device 140, and a nozzle 150.

[0039] The heater 130 is connected to the liquid storage tank 120 to heat and vaporize the liquid discharged from the liquid storage tank 120. The gas-liquid separator 140 is connected to the heater 130 to separate the mixed gas discharged from the heater 130. The nozzle 150 is installed at the air inlet 111 and / or the fresh air outlet of the indoor unit housing 110 and is connected to the exhaust port 144 of the gas-liquid separator 140.

[0040] Specifically, the heater 130 is connected to the liquid storage tank 120 via a pipe. The liquid discharged from the liquid storage tank 120 is heated and vaporized inside the heater 130. The liquid storage tank 120 has a storage space to store the liquid water required for air conditioning humidification. The water in the liquid storage tank 120 can be added from the outside or by collecting the condensate produced by the indoor unit 100 of the air conditioner. The liquid storage tank 120 can be placed inside the indoor unit housing 110 to make the appearance of the indoor unit 100 of the air conditioner neater. The position of the liquid storage tank 120 can be adjusted according to specific needs.

[0041] The heater 130 can be a PTC or other energy-efficient heating element, or a heat pump or other high-power heating element that can completely evaporate liquid water. The gas-liquid separation device 140 is connected to the heater 130 to separate the incompletely evaporated liquid water and water vapor discharged from the heater 130, preventing the incompletely evaporated liquid water from being sprayed out after passing through the heater 130, which would generate noise and affect the user experience.

[0042] The nozzle 150 is detachably mounted on the air inlet 111 and / or fresh air outlet of the indoor unit housing 110 and connected to the exhaust port 144 of the gas-liquid separator 140. Optionally, the nozzle 150 can be configured as a spray pipe extending in the left-right direction, with multiple nozzles on the spray pipe. This configuration allows water vapor to be fully mixed with the air at the fresh air outlet or air inlet 111 before being sprayed out, thus better and more evenly humidifying the indoor air. The nozzle 150 can be detachably connected to the exhaust port 144 of the gas-liquid separator 140 via a pipe, or it can be directly connected to the exhaust port 144 of the gas-liquid separator 140. Compared with the prior art where the heating element heats up slowly and cannot completely evaporate the liquid water, resulting in liquid water being sprayed out of the nozzle 150, the gas-liquid separator 140 designed in this invention can effectively solve this problem, thereby improving the user experience.

[0043] In some embodiments of the present invention, the gas-liquid separation device 140 includes: a gas-liquid separation pipe 141, a gas-liquid separation chamber 142 disposed within the gas-liquid separation pipe 141, and an air inlet 143 and an exhaust outlet 144 respectively connected to the gas-liquid separation chamber 142. The air inlet 143 is connected to a heater 130 via a pipe, and the exhaust outlet 144 is connected to a nozzle 150 via a pipe. Specifically, liquid water passing through the heater 130 is heated and evaporated by the heater 130 and then discharged from the air inlet 143 into the gas-liquid separation chamber 142. The gas-liquid separation chamber 142 is used to contain and separate the mixture of water vapor and liquid water discharged from the heater 130. After the water vapor in the gas-liquid mixture is completely separated, it is discharged from the exhaust outlet 144 into the nozzle 150, and then sprayed out through the nozzle 150, where it is fully mixed with the air entering the air conditioner indoor unit 100 to achieve uniform humidification.

[0044] In some embodiments of the present invention, the gas-liquid separation pipe 141 is specifically constructed from a top wall, a bottom wall, and a peripheral side wall, and is constructed as a transparent pipe; optionally, the material of the gas-liquid separation pipe 141 can be glass of moderate thickness or other transparent materials with good heat resistance; the indoor unit housing 110 includes a panel 112, and the part of the panel 112 facing the gas-liquid separation pipe 141 in the front-back direction is also constructed as a transparent part as a viewing window, so that the user can clearly observe the state of the water mist generated in the gas-liquid separation pipe 141, and facilitate the user to observe the water quality of the liquid water used for evaporation in the air conditioner indoor unit 100, which solves the problem in the prior art that the user cannot observe the completely vaporized water vapor and water quality, improves the user's perception of the product, and thus enhances the user's trust in the product.

[0045] Optionally, LED lights or energy-saving light strips can be installed on the gas-liquid separation pipe 141, so that the LED lights or energy-saving light strips are linked with the heater 130, and the light is refracted by steam to achieve an artistic display effect. The gas-liquid separation pipe 141 can be constructed into a cylindrical or other shape to produce a better artistic effect with the LED lights or energy-saving light strips, and further enhance the user experience.

[0046] In some embodiments of the present invention, the height of the air inlet 143 of the gas-liquid separator 140 is less than the height of the exhaust port 144. Specifically, this arrangement allows the gas in the gas-liquid mixture to rise from the air inlet 143 to the exhaust port 144, while preventing the liquid in the gas-liquid mixture from directly splashing into the exhaust port 144, thereby avoiding the discharge of liquid from the exhaust port 144. This better separates the gas-liquid mixture discharged from the heater 130, preventing liquid water from spraying out from the nozzle 150, generating noise, and affecting the user experience.

[0047] In some embodiments of the present invention, an air inlet pipe 145 is provided between the gas-liquid separation pipe 141 and the heater 130. The air inlet pipe 145 passes through the top wall of the gas-liquid separation pipe 141 and extends into the interior of the gas-liquid separation pipe 141. The end of the air inlet pipe 145 located inside the gas-liquid separation pipe 141 is configured as an air inlet 143, and an exhaust port 144 is provided on the top wall of the gas-liquid separation pipe 141. Specifically, the air inlet pipe 145 can be constructed of a material with certain heat resistance and strength, such as glass, metal, and plastic pipes with corresponding properties. Furthermore, the air inlet pipe 145 passes through the top wall of the gas-liquid separation pipe 141 and extends into the interior of the gas-liquid separation pipe 141 near the bottom wall. The air inlet pipe 145 is connected to both the gas-liquid separation pipe 141 and the heater 130. The air inlet 143 is located at one end of the air inlet pipe 145 near the bottom wall of the gas-liquid separation pipe 141. The liquid water in the storage tank 120 is heated by the heater 130 and flows into the gas-liquid separation pipe 141 through the air inlet pipe 145 located between the gas-liquid separation pipe 141 and the heater 130. Gas-liquid separation is carried out inside the gas-liquid separation pipe 141, and water vapor is discharged from the exhaust port 144 located on the top wall of the gas-liquid separation pipe 141.

[0048] In some embodiments of the present invention, an exhaust pipe 146 is provided between the exhaust port 144 and the nozzle 150. The exhaust pipe 146 is connected to the gas-liquid separation pipe 141 and the nozzle 150 respectively. The cross-sectional area of ​​the gas-liquid separation pipe 141 is larger than the cross-sectional area of ​​the air inlet pipe 145 and the exhaust pipe 146. Due to this structural arrangement, the volume of the gas-liquid separation pipe 141 is larger than that of the air inlet pipe 145. This can buffer and reduce the pressure of the high-temperature and high-pressure gas-liquid mixture or water vapor entering the gas-liquid separation pipe 141 from the air inlet pipe 145. This can reduce the noise caused by water vapor pressure pulsation, thereby improving the user experience.

[0049] In some embodiments of the present invention, a drain port 147 is also provided on the bottom wall of the gas-liquid separator 141, and the drain port 147 can be selectively connected to a water storage tank on the indoor unit housing 110. Specifically, when the volume of liquid water stored inside the gas-liquid separator 141 reaches a certain value and needs to be discharged, the drain port 147 is connected to the water storage tank on the indoor unit housing 110, so that the liquid water inside the gas-liquid separator 141 is discharged into the water storage tank. When there is no liquid water inside the gas-liquid separator 141 or the volume of liquid water is insufficient, the drain port 147 is closed, and at this time the drain port 147 is not connected to the water storage tank on the indoor unit housing 110.

[0050] In some embodiments of the present invention, a float 148 is provided inside the gas-liquid separation tube 141. The float 148 is adapted to open the drain port 147 when the liquid volume inside the gas-liquid separation tube 141 reaches a preset value. Specifically, the float 148 is disposed on the bottom wall of the gas-liquid separation tube 141. When there is no liquid water inside the gas-liquid separation tube 141 or the liquid volume of liquid water does not reach the preset value, the float 148 blocks the drain port 147 to prevent water vapor from escaping from the drain port 147. When the liquid volume inside the gas-liquid separation tube 141 reaches the preset value (for example, when the liquid water overflows the float 148, at which point the buoyancy of the float 148 is at its maximum), the buoyancy of the float 148 is greater than the weight of the float 148, thereby opening the drain port 147 on the bottom wall of the gas-liquid separation tube 141, so that the liquid water stored inside the gas-liquid separation tube 141 can be discharged smoothly. When the liquid water is drained or drained to a value less than the preset value, the float 148 returns to its original position. Meanwhile, during the upward movement of the float 148, the liquid water acts as a liquid seal for the water vapor. Even if the float 148 floats, the water vapor will not escape from the drain port 147, thus ensuring the utilization rate of the water vapor. Optionally, the float 148 can be made of a material with a certain mass and low density, or the roughness of the contact surface between the float 148 and the bottom wall of the gas-liquid separation pipe 141 can be increased to prevent the high-temperature and high-pressure water vapor discharged from the air inlet 143 from causing the float 148 to move and resulting in the escape of water vapor.

[0051] Furthermore, the air inlet pipe 145 in the gas-liquid separation device 140 is relatively long, penetrating the top wall of the gas-liquid separation pipe 141 and extending into the interior of the gas-liquid separation pipe 141, and extending vertically to a position more than 5 mm above the float 148. The exhaust port 144 is located on the top wall of the gas-liquid separation pipe 141. This structural arrangement ensures that the interior of the gas-liquid separation pipe 141 has sufficient space to accommodate liquid water, thus avoiding backflow due to excessive liquid water.

[0052] In some embodiments of the present invention, a drain pipe 149 is provided between the drain outlet 147 and the water storage tank. A guide hole is provided at one end of the drain pipe 149 connected to the drain outlet 147. The cross-sectional area of ​​the guide hole gradually decreases in the direction away from the center of the gas-liquid separation pipe 141. A guide protrusion that cooperates with the guide hole is provided on the bottom wall of the float 148. Specifically, the guide protrusion provided on the bottom wall of the float 148 can be cone-shaped. The sidewall of the cone-shaped protrusion matches the chamfer of the cross-section of the guide hole. The guide hole, as a guiding feature for the up-and-down movement of the float 148, can guide the float 148 to a certain extent. Simultaneously, this structural arrangement increases the sealing area between the guide hole and the float 148, resulting in better airtightness of the gas-liquid separation pipe 141 and further preventing water vapor from escaping from the drain outlet 147 when there is no liquid water inside the gas-liquid separation pipe 141 to act as a liquid seal.

[0053] In some embodiments of the present invention, a first connecting pipe 160 is provided between the water storage tank and the liquid storage tank 120, and a first pump body 161 is provided on the first connecting pipe 160. Specifically, the first pump body 161 is connected to the liquid storage tank 120 and the water storage tank through the first connecting pipe 160. The first pump body 161 recovers the evaporator condensate in the water storage tank and the liquid water separated in the gas-liquid separation device 140 back to the water tank, and then reheats and evaporates it through the heater 130, thereby improving the utilization rate of liquid water.

[0054] In some embodiments of the present invention, a filter element 162 is also provided on the first connecting pipe 160 to purify the evaporator condensate recovered from the water storage tank and the liquid water separated by the gas-liquid separator 140, thereby improving the quality of the liquid water used for humidification in the indoor unit 100 of the air conditioner. At the same time, it can make the water observed by the user in the gas-liquid separator 140 clearer, reduce the adhesion of scale inside the gas-liquid separator 141, and enhance the user's trust in the product.

[0055] In some embodiments of the present invention, a second connecting pipe 170 is provided between the liquid storage tank 120 and the heater 130, and a second pump body 171 is provided on the second connecting pipe 170. Specifically, the second pump body 171 is connected to the liquid storage tank 120 and the heater 130 through the second connecting pipe 170, and the second pump body 171 provided on the second connecting pipe 170 is used to transport the liquid water in the liquid storage tank 120 to the heater 130 for heating and evaporation.

[0056] The structure and operation of the air conditioner indoor unit 100 according to an embodiment of the present invention are briefly described below.

[0057] In the air conditioner indoor unit 100 of this embodiment, the air conditioner indoor unit 100 is provided with an indoor unit housing 110, a liquid storage tank 120, a heater 130, a gas-liquid separator 140, a pump body, and some pipes. Specifically, a water storage tank is provided on the indoor unit housing 110, and the water storage tank is connected to the liquid storage tank 120 through a first connecting pipe 160. A first pump body 161 and a filter element 162 are provided on the first connecting pipe 160. The first pump body 161 is used to transport the liquid water in the water storage tank to the liquid storage tank 120. In this process, the filter element 162 plays a role in purifying the water quality. The liquid storage tank 120 is connected to the heater 130 through a second connecting pipe 170, and a second pump body 171 is provided on the second connecting pipe 170. The second pump body 171 is used to pump the liquid water in the liquid storage tank 120 to the heater 130. The liquid stored inside unit 20 is delivered to heater 130. Heater 130 heats and evaporates the delivered liquid water. The high-temperature and high-pressure gas after being heated and evaporated by heater 130 enters gas-liquid separator 141 through air inlet pipe 145 under the action of pressure difference. Separation is carried out inside gas-liquid separator 141. Water vapor reaches nozzle 150 from exhaust port 144 through exhaust pipe 146 connected to nozzle 150 and is sprayed out through nozzle 150. It is fully mixed with air at air inlet 111 and / or fresh air outlet of indoor unit casing 110. Furthermore, the bottom wall of the gas-liquid separator 141 is provided with a drain port 147 and a float 148. When the liquid volume inside the gas-liquid separator 141 reaches a preset value (causing the float 148 to float), the drain port 147 opens, allowing the liquid water inside the gas-liquid separator 141 to be discharged smoothly. When the liquid volume inside the gas-liquid separator 141 is less than the preset value, the float 148 cooperates with the guide port to close the drain port 147. Furthermore, the drain port 147 can be selectively connected to a water storage tank on the indoor unit casing 110, allowing the liquid inside the gas-liquid separator 141 to be discharged into the water storage tank, thereby achieving the recycling of incompletely evaporated liquid water. This also avoids the phenomenon of water spraying due to insufficient heating of the liquid water by the heater 130, thus saving water while improving the user experience.

[0058] An air conditioner according to an embodiment of the present invention includes the aforementioned indoor unit 100. Because the air conditioner according to the embodiment of the present invention has the aforementioned indoor unit 100, which has a gas-liquid separation function, it can prevent phenomena such as water blowing and noise generated by the spray nozzle 150 from affecting the user experience. Furthermore, the air conditioner's structure, which makes water quality and water vapor visible, enhances user trust in the product.

[0059] It should be noted that the internal components and pipes of the air conditioner indoor unit 100 are all detachable. This design facilitates the replacement of internal components. When a component inside the air conditioner indoor unit 100 is damaged or scale accumulates inside the gas-liquid separator 141 to a certain extent, only the specific component needs to be replaced, thus reducing the cost of repairing or maintaining the air conditioner indoor unit 100.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: Indoor unit casing; A liquid storage tank and a heater, the heater being connected to the liquid storage tank to heat and vaporize the liquid discharged from the liquid storage tank; A gas-liquid separator and a nozzle, wherein the gas-liquid separator is connected to the heater to separate the mixed gas discharged from the heater, and the nozzle is disposed at the air inlet and / or fresh air outlet of the indoor unit housing and connected to the exhaust port of the gas-liquid separator. The gas-liquid separation device includes: a gas-liquid separation pipe, which is constructed as a transparent pipe, and a gas-liquid separation chamber and an air inlet and an exhaust outlet respectively connected to the gas-liquid separation chamber. The air inlet is connected to the heater, and the exhaust outlet is connected to the nozzle. The indoor unit housing includes: a panel, and the portion of the panel facing the gas-liquid separation pipe in the front-back direction is also constructed as a transparent component. LED lights or energy-saving light strips are installed on the gas-liquid separation pipe, and the LED lights or energy-saving light strips are linked with the heater to achieve an artistic display effect by refracting light through steam.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The height of the air inlet is less than the height of the exhaust outlet.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, An air inlet pipe is provided between the gas-liquid separator and the heater. The air inlet pipe passes through the top wall of the gas-liquid separator and extends into the interior of the gas-liquid separator. An air inlet is provided at one end of the air inlet pipe located inside the gas-liquid separator, and an exhaust port is provided on the top wall of the gas-liquid separator.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, An exhaust pipe is provided between the exhaust port and the nozzle, and the cross-sectional area of ​​the gas-liquid separation pipe is larger than the cross-sectional area of ​​the air inlet pipe and the exhaust pipe.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The bottom wall of the gas-liquid separator is also provided with a drain port, which can be selectively connected to a water storage tank on the indoor unit housing.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The gas-liquid separation tube is equipped with a float inside, which is adapted to open the drain port when the liquid volume in the gas-liquid separation tube reaches a preset value.

7. The indoor unit of the air conditioner according to claim 6, characterized in that, A drain pipe is provided between the drain outlet and the water storage tank. A guide hole is provided at one end of the drain pipe connected to the drain outlet. The cross-sectional area of ​​the guide hole gradually decreases in the direction away from the center of the gas-liquid separation pipe. A guide protrusion that cooperates with the guide hole is provided on the bottom wall of the float.

8. The indoor unit of the air conditioner according to claim 5, characterized in that, A first connecting pipe is provided between the water storage tank and the liquid storage tank, and a first pump body is provided on the first connecting pipe.

9. The indoor unit of the air conditioner according to claim 8, characterized in that, The first connecting pipe is also equipped with a filter.

10. The indoor unit of the air conditioner according to claim 1, characterized in that, A second connecting pipe is provided between the liquid storage tank and the heater, and a second pump body is provided on the second connecting pipe.

11. An air conditioner, characterized in that, The indoor unit of the air conditioner includes any one of claims 1-10.

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