Air conditioner

Abstract

The utility model discloses an air conditioner, which relates to the technical field of air conditioners and comprises a compressor, an outdoor unit coil, an indoor unit and an anti-condensation pipeline. The indoor unit comprises a shell and an indoor unit coil pipe, and a loop allowing a refrigerant to flow is formed among the compressor, the outdoor unit coil pipe and the indoor unit coil pipe. And the input end of the anti-condensation pipeline communicates with the output end of the outdoor unit coil pipe, and the output end of the anti-condensation pipeline communicates with the input end of the indoor unit coil pipe, so that part of the refrigerant flowing out of the outdoor unit coil pipe can flow through the anti-condensation pipeline and flow into the indoor unit coil pipe. The anti-condensation pipeline is provided with an anti-condensation section, and the anti-condensation section is arranged on the shell so that the temperature of the shell can be increased through a refrigerant in the anti-condensation section. According to the air conditioner, the condensation phenomenon on the surface of the shell and the air outlet can be reduced or prevented while the running frequency of the compressor and the rotating speed of the indoor fan are kept, and then the use experience of a user is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field, especially a kind of air conditioner. BACKGROUND

[0002] When air conditioner operates refrigeration mode, the surface of indoor unit shell and air outlet are prone to condensation phenomenon, resulting in the surface of shell and air outlet are often attached with condensate water.In prior art, air conditioner will reduce or prevent the generation of condensation phenomenon by adjusting the operating frequency of compressor and the speed of indoor fan, and this anti-condensation method will affect the normal air outlet temperature of air conditioner, and further reduce the user experience. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art is solved.For this purpose, the utility model provides an air conditioner, which can not only reduce or prevent the surface of shell and air outlet from condensation phenomenon, but also ensure the user experience.

[0004] According to the air conditioner of the utility model embodiment, it comprises compressor, outdoor unit coil, indoor unit and anti-condensation pipeline.The indoor unit comprises shell and indoor unit coil, and the compressor, the outdoor unit coil and the indoor unit coil form a loop for the flow of refrigerant;Anti-condensation pipeline, the input end of the anti-condensation pipeline is communicated with the output end of the outdoor unit coil, and the output end of the anti-condensation pipeline is communicated with the input end of the indoor unit coil, so that part of the refrigerant flowing out of the outdoor unit coil can flow through the anti-condensation pipeline and flow into the indoor unit coil;The anti-condensation pipeline has anti-condensation section, and the anti-condensation section is arranged on the shell, so that the temperature of the shell can be increased by the refrigerant in the anti-condensation section.

[0005] At least has the following beneficial effects:

[0006] The refrigerant flowing out of the outdoor coil outlet keeps a high temperature, the input end and the output end of the anti-condensation pipeline are communicated with the output end of the outdoor coil and the input end of the indoor coil respectively, and therefore part of the refrigerant flowing out of the outdoor coil outlet will flow into the anti-condensation pipeline. The anti-condensation pipeline has an anti-condensation section, and the anti-condensation section is arranged on the shell. When the refrigerant keeping a high temperature in the anti-condensation pipeline flows through the anti-condensation section, the refrigerant keeping a high temperature will transfer heat to the shell, so that the overall temperature of the shell can be increased, and then the temperature of the surface of the shell and the outlet can be increased. When the temperature of the surface of the shell and the outlet is increased, the difference between the temperature of the surface of the shell and the outlet and the dew point temperature of the air can be reduced, or even the temperature of the surface of the shell and the outlet can be greater than the dew point temperature of the air, and then the condensation phenomenon is reduced or prevented. The air conditioner can reduce or prevent the condensation phenomenon of the surface of the shell and the outlet while keeping the compressor operating frequency and the indoor fan rotating speed, and then the use experience of the user is beneficially ensured.

[0007] The air conditioner according to the embodiment of the present application further comprises a first valve, which is arranged on the input end of the anti-condensation pipeline, and is used to open or close the anti-condensation pipeline.

[0008] The air conditioner according to the embodiment of the present application further comprises a second valve, which is arranged on the input end of the indoor coil, and is used to open or close the input end of the indoor coil. The second valve can close the input end of the indoor coil, so that the refrigerant flowing out of the outdoor coil can all flow into the anti-condensation pipeline.

[0009] The air conditioner according to the embodiment of the present application further comprises a throttling element, which is arranged on the circuit, is arranged between the outdoor coil and the indoor coil, and is used to flow the refrigerant flowing out of the anti-condensation pipeline.

[0010] The air conditioner according to the embodiment of the present application is characterized in that the anti-condensation sections are arranged on the inner wall of the shell.

[0011] The air conditioner according to the embodiment of the present application further comprises a one-way valve, which is arranged on the output end of the anti-condensation pipeline, and is used to communicate the output end of the anti-condensation pipeline with the input end of the indoor coil.

[0012] The air conditioner according to the embodiment of the present application further comprises a flow meter and a regulating valve, which are both arranged on the anti-condensation pipeline, so that the refrigerant flows through the flow meter and the regulating valve in sequence and then flows into the anti-condensation section.

[0013] According to the air conditioner of the embodiment of the present application, the indoor unit further comprises an indoor fan, the indoor fan is arranged in the shell, and the indoor fan is arranged correspondingly to the indoor unit coil.

[0014] According to the air conditioner of the embodiment of the present application, the indoor unit further comprises an indoor fan, the indoor fan is arranged in the shell, and the indoor fan is arranged correspondingly to the indoor unit coil.

[0015] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in combination with the drawings and embodiments:

[0017] Figure 1 The refrigerant flow schematic diagram of the air conditioner of the embodiment of the present application in the refrigeration mode is shown;

[0018] Figure 2 The refrigerant flow schematic diagram of the air conditioner of the embodiment of the present application in the first anti-condensation mode is shown;

[0019] Figure 3 The refrigerant flow schematic diagram of the air conditioner of the embodiment of the present application in the second anti-condensation mode is shown;

[0020] Figure 4 The structure schematic diagram of the shell, the anti-condensation section and the indoor unit coil in the air conditioner of the embodiment of the present application is shown;

[0021] Figure 5 The structure schematic diagram of the shell, the anti-condensation section and the indoor unit coil in the air conditioner of the embodiment of the present application is shown;

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] Compressor 100;

[0024] Outdoor unit coil 200; outdoor fan 210;

[0025] Indoor unit coil 300; indoor fan 310; shell 320; second valve 330; throttling element 340; first three-way valve 350;

[0026] Anti-condensation pipeline 400; anti-condensation section 410; first valve 420; check valve 430; flow meter 440; adjusting valve 450; first three-way valve 460. DETAILED DESCRIPTION

[0027] In the description of the utility model, it is understood that, if the direction description, for example, the direction or position relation of the indication such as upper, lower, front, back, left, right is based on the direction or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element must have a particular orientation, with a particular orientation configuration and operation, therefore, it can not be understood as the limitation of the utility model.

[0028] In the description of the utility model, if there is a description to first, second is only used for distinguishing technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood broadly, and the skilled in the art can determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0030] Reference Figure 1 、 Figure 2 、 Figure 4 And Figure 5 The utility model discloses a kind of air conditioners, including compressor 100, outdoor coil 200, indoor unit and anti-condensation pipeline 400.

[0031] Indoor unit includes shell 320 and indoor coil 300, and the circuit for the flow of refrigerant is formed between compressor 100, outdoor coil 200 and indoor coil 300.Anti-condensation pipeline 400, the input end of anti-condensation pipeline 400 is communicated with the output end of outdoor coil 200, the output end of anti-condensation pipeline 400 is communicated with the input end of indoor coil 300, to enable part of refrigerant from outdoor coil 200 to flow through anti-condensation pipeline 400 and flow into indoor coil 300.Anti-condensation pipeline 400 has anti-condensation section 410, and anti-condensation section 410 is arranged on shell 320, to enable the temperature of shell 320 to be improved in the refrigerant in anti-condensation section 410.

[0032] It needs to be explained that in the prior art, the indoor coil 300 is arranged in the shell 320 in the indoor unit, and the indoor fan 310 is also arranged in the shell 320. In the refrigeration process of the air conditioner, the temperature of the indoor coil 300 is low, so that the surface temperature of the shell 320 adjacent to the indoor coil 300 is also reduced. When the surface temperature of the shell 320 is lower than the dew point temperature of indoor air, the water vapor in the air will condense to form condensed water on the surface of the shell 320. The air outlet on the shell 320 is the outlet of the cold air after refrigeration. When the cold air blows to the indoor through the air outlet, the temperature near the air outlet will be rapidly reduced. When the temperature at the air outlet is reduced to below the dew point temperature of the indoor air, the water vapor in the air will condense to form condensed water at the air outlet. When the condensation phenomenon is serious, a large amount of condensed water will be attached to the surface of the shell 320 and the air outlet. On the one hand, when the user sees that the surface of the shell 320 and the air outlet are attached with condensed water, a psychological discomfort will be caused. On the other hand, the attached condensed water will drop to the indoor, which will cause an additional cleaning burden to the user, so it is necessary for the air conditioner to set a condensation prevention means.

[0033] At present, the air conditioner can reduce or prevent the generation of the condensation phenomenon by adjusting the running frequency of the compressor 100 and the rotating speed of the indoor fan 310. For example, the running frequency of the compressor 100 is reduced, so that the evaporation speed of the refrigerant in the indoor coil 300 is slowed down, and then the cooling speed of the indoor coil 300 and the shell 320 is slowed down, so as to inhibit the generation of the condensation phenomenon; for example, the rotating speed of the indoor fan 310 is reduced, so that the cooling speed of the shell 320 is slowed down, so as to inhibit the generation of the condensation phenomenon; for example, the rotating speed of the indoor fan 310 is increased, so that the water vapor in the air is blown to the indoor before it is condensed. Frequent adjustment of the rotating speed of the indoor fan 310 not only makes the blown air large and small, but also makes the indoor fan 310 emit abnormal sound due to unstable rotating speed, which reduces the user experience. On the other hand, frequent adjustment of the running frequency of the compressor 100 makes the outlet air temperature large and small, which leads to unstable indoor temperature and also reduces the user experience.

[0034] In the embodiment of the utility model, reference Figure 1, the casing 320 includes the indoor coil 300 and the casing 320, the exhaust end of the compressor 100 is communicated with the input end of the outdoor coil 200, the output end of the outdoor coil 200 is communicated with the input end of the indoor coil 300, and the output end of the indoor coil 300 is communicated with the suction end of the compressor 100, so that the compressor 100, the outdoor coil 200 and the indoor coil 300 form a loop for the refrigerant to flow. After the air conditioner starts the refrigeration mode, the refrigerant flowing out of the exhaust end of the compressor 100 first flows into the outdoor coil 200, then the refrigerant in the outdoor coil 200 flows into the indoor coil 300, and finally the refrigerant in the indoor coil 300 flows into the suction end of the compressor 100, so as to circulate repeatedly. The anti-condensation pipeline 400 is used for the refrigerant to flow, the input end of the anti-condensation pipeline 400 is communicated with the output end of the outdoor coil 200, and the output end of the anti-condensation pipeline 400 is communicated with the input end of the indoor coil 300. The refrigerant flowing out of the output end of the outdoor coil 200 will be divided into two parts, part of the refrigerant will flow through the anti-condensation pipeline 400 and flow into the indoor coil 300, and the other part of the refrigerant will directly flow into the indoor coil 300.

[0035] Reference Figure 1 , Figure 4 and Figure 5 The anti-condensation pipeline 400 has an anti-condensation section 410, the anti-condensation section 410 is located between the input end and the output end of the anti-condensation pipeline 400, and the anti-condensation section 410 is uniformly distributed on the inner wall of the casing 320. Because the temperature of the refrigerant flowing out of the outdoor coil 200 is high, the temperature of the part of the refrigerant flowing into the anti-condensation pipeline 400 is high. When the refrigerant in the anti-condensation pipeline 400 flows through the anti-condensation section 410, the refrigerant with high temperature in the anti-condensation section 410 will transfer heat to the casing 320, so that the overall temperature of the casing 320 can be raised, and then the temperature of the surface of the casing 320 and the outlet can be raised.

[0036] It needs to be explained that the compressor 100 compresses the low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant, so that the internal energy of the refrigerant increases, and the temperature rises sharply. Then the high-temperature and high-pressure gaseous refrigerant flows into the outdoor coil 200. The high-temperature and high-pressure gaseous refrigerant flowing into the outdoor coil 200 will condense in the coil and release heat to the surrounding environment. The condensation of gaseous refrigerant in the outdoor coil 200 is a gradual process, although most of the refrigerant will change from gaseous to liquid, but it is difficult to make all gaseous refrigerant completely converted at once. In actual situation, when the liquid refrigerant flows out of the outdoor coil 200, part of the gaseous refrigerant will also be mixed with it. Because the heat of these gaseous refrigerant is high, the overall refrigerant flowing out still maintains a high temperature. The above process is common sense in the field of air conditioners, and will not be further elaborated here. It needs to be explained that the dew point temperature of air refers to when the temperature of air decreases to the dew point temperature, the water vapor in the air will begin to condense into condensed water. When the surface temperature of an object is lower than the dew point temperature of air, and the difference between the surface temperature of the object and the dew point temperature of air is large, the condensation phenomenon will be more serious.

[0037] It can be understood that the refrigerant flowing out of the output end of the outdoor coil 200 maintains a high temperature, the input end and the output end of the anti-condensation pipeline 400 are communicated with the output end of the outdoor coil 200 and the input end of the indoor coil 300 respectively, so part of the refrigerant flowing out of the output end of the outdoor coil 200 will flow into the anti-condensation pipeline 400. The anti-condensation pipeline 400 has an anti-condensation section 410, and the anti-condensation section 410 is arranged on the shell 320. When the refrigerant with high temperature in the anti-condensation pipeline 400 flows through the anti-condensation section 410, the refrigerant with high temperature will transfer heat to the shell 320, so that the overall temperature of the shell 320 can be raised, and then the temperature of the surface of the shell 320 and the outlet can be raised. When the temperature of the surface of the shell 320 and the outlet is raised, the difference between the temperature of the surface of the shell 320 and the outlet and the dew point temperature of air can be reduced, or even the temperature of the surface of the shell 320 and the outlet can be greater than the dew point temperature of air, thereby reducing or preventing the condensation phenomenon. The air conditioner can reduce or prevent the condensation phenomenon on the surface of the shell 320 and the outlet while maintaining the operating frequency of the compressor 100 and the rotating speed of the indoor fan 310, thereby facilitating to ensure the user experience.

[0038] Further, after the overall temperature of the shell 320 is raised, the surface temperature of the indoor coil 300 in the shell 320 will also be raised, so that the difference between the surface temperature of the indoor coil 300 and the dew point temperature of air can be reduced, or even the surface temperature of the indoor coil 300 can be greater than the dew point temperature of air, thereby reducing or preventing the condensation phenomenon on the surface of the indoor coil 300, and effectively inhibiting the condensation phenomenon in the shell 320.

[0039] With reference to Figure 2 The air conditioner further comprises a first valve 420 arranged at the input end of the anti-condensation pipeline 400, and the first valve 420 is used to open or close the input end of the anti-condensation pipeline 400. It can be understood that when anti-condensation is needed, the first valve 420 opens the input end of the anti-condensation pipeline 400, so that part of the refrigerant flowing out of the outdoor coil 200 can flow into the anti-condensation pipeline 400. When anti-condensation is not needed, the first valve 420 closes the input end of the anti-condensation pipeline 400, so that the refrigerant flowing out of the outdoor coil 200 can all flow into the indoor coil 300. In the embodiment of the present application, the first valve 420 can be a first electromagnetic valve.

[0040] With reference to Figure 3 The air conditioner further comprises a second valve 330 arranged at the input end of the indoor coil 300, and the second valve 330 is used to open or close the input end of the indoor coil 300. The second valve 330 can close the input end of the indoor coil 300, so that the refrigerant flowing out of the outdoor coil 200 can all flow into the anti-condensation pipeline 400. It can be understood that when the outdoor temperature is high or the relative humidity of indoor air is high, a large amount of condensate water is easily condensed on the surface of the shell 320 and the air outlet under these special conditions. When the air conditioner detects that the current is under these special conditions after running for a period of time, the first valve 420 is kept open, and the second valve 330 closes the input end of the indoor coil 300, so that the refrigerant flowing out of the outdoor coil 200 and keeping high temperature all flows into the anti-condensation pipeline 400, and then the refrigerant in the anti-condensation section 410 has more heat transferred to the shell 320, so that the overall temperature of the shell 320 can be quickly increased to inhibit the condensation phenomenon of the surface of the shell 320 and the air outlet, and then prevent a large amount of condensate water from being condensed on the surface of the shell 320 and the air outlet. In the embodiment of the present application, the second valve 330 can be a second electromagnetic valve.

[0041] It should be explained that the dew point temperature of air is related to the ambient temperature. When the outdoor temperature rises, the indoor temperature is also likely to rise. Under certain humidity conditions, the temperature rise will cause the saturation vapor pressure of air to rise, and the dew point temperature of air will also rise accordingly. When the outdoor temperature is high and causes the indoor temperature to be high, the dew point temperature of the indoor air will also be high accordingly, and the temperature difference between the surface of the shell 320 and the outlet and the dew point temperature of the air will increase. According to the principle of condensation, the greater the temperature difference, the more likely it is for water vapor to reach the dew point temperature and condense on the low-temperature surface, so the condensation phenomenon will be more serious. When the relative humidity of indoor air is high, it means that the water vapor content in the air is closer to the saturated state. In this case, when the condensation condition is formed, compared with the case where the relative humidity is small, more water vapor can be condensed into liquid water. Therefore, when the relative humidity of indoor air is high, the condensation phenomenon will be more serious.

[0042] Reference Figures 1 to 3 The air conditioner further comprises a throttling element 340 provided on the circuit, the throttling element 340 is provided between the outdoor coil 200 and the indoor coil 300, and the refrigerant flowing out of the anti-condensation pipeline 400 flows through the throttling element 340 and then flows into the indoor coil 300. The throttling element 340 can be a thermal expansion valve, an electronic expansion valve or a capillary tube. The throttling element 340 is a common element in the field of air conditioners, which will not be described further here.

[0043] It can be understood that when the second valve 330 remains closed and the first valve 420 remains open, the refrigerant flowing out of the compressor 100 flows through the outdoor coil 200, the first valve 420, the anti-condensation pipeline 400, the throttling element 340 and the indoor coil 300 in turn, and finally the refrigerant in the indoor coil 300 reflows into the compressor 100, which circulates repeatedly. The refrigerant flowing out of the anti-condensation pipeline 400 flows through the throttling element 340 and then flows into the indoor coil 300, and the refrigerant flowing into the indoor coil 300 can still evaporate and absorb heat, that is, the air conditioner is still in a refrigeration state at this time. Specifically, when the second valve 330 remains closed and the first valve 420 remains open, all the refrigerant flowing out of the outdoor coil 200 flows through the anti-condensation pipeline 400 and the throttling element 340 and then flows into the indoor coil 300. Since the temperature of the refrigerant flowing through the anti-condensation pipeline 400 will decrease, the refrigerant flowing into the indoor coil 300 can have a large degree of supercooling, and even the air conditioner can have better refrigeration effect.

[0044] Reference Figures 1 to 3The air conditioner further comprises a one-way valve 430 arranged on the output end of the anti-condensation pipeline 400, and the output end of the anti-condensation pipeline 400 is communicated with the input end of the indoor coil 300 through the one-way valve 430. It can be understood that the refrigerant in the anti-condensation pipeline 400 can flow into the indoor coil 300 through the one-way valve 430. The one-way valve 430 is an element allowing the refrigerant to flow freely in one direction and hindering the flow of the refrigerant in the opposite direction. In the embodiment of the utility model, the one-way valve 430 allows the refrigerant in the anti-condensation pipeline 400 to flow into the input end of the indoor coil 300, and the refrigerant at the input end of the indoor coil 300 cannot flow into the anti-condensation pipeline 400 through the one-way valve 430.

[0045] Reference Figures 1 to 3 The air conditioner further comprises a flow meter 440 and a regulating valve 450, both of which are arranged on the anti-condensation pipeline 400, so that the refrigerant flows into the anti-condensation section 410 after sequentially flowing through the flow meter 440 and the regulating valve 450. In the embodiment of the utility model, the refrigerant flowing into the anti-condensation pipeline 400 sequentially flows through the flow meter 440 and the regulating valve 450, and then flows into the anti-condensation section 410. The flow meter 440 is used to measure the flow of the refrigerant in the anti-condensation pipeline 400 and feed back the flow signal to the control system of the air conditioner. When the flow meter 440 detects that the flow of the refrigerant is higher than the set value, the flow meter 440 sends the information to the control system of the air conditioner. According to the signal, the control system sends an instruction to the regulating valve 450 to close the valve opening of the regulating valve 450 to reduce the flow of the refrigerant. Conversely, when the flow of the refrigerant is lower than the set value, the control system of the air conditioner increases the opening of the regulating valve 450 to make the flow of the refrigerant return to the appropriate range. Through the cooperation of the flow meter 440 and the regulating valve 450, the air conditioner can accurately control the flow of the refrigerant in the anti-condensation pipeline 400, and then the air conditioner can control the amount of heat transferred to the shell 320 by the anti-condensation section 410 according to the condensation condition. In the embodiment of the utility model, the regulating valve 450 can be an electric regulating valve 450, and the flow meter 440 can be an electromagnetic flow meter 440. The regulating valve 450 and the flow meter 440 are both common elements in the field of air conditioners, and will not be described further here.

[0046] In the embodiment of the utility model, the air conditioner further comprises a first three-way valve 460, a second three-way valve 350 and an outdoor unit. The first three-way valve 460 has a first inlet, a first outlet and a second outlet, and the second three-way valve 350 has a second inlet, a third outlet and a fourth outlet. The output end of the outdoor unit coil 200 is in communication with the first inlet of the first three-way valve 460, the input end of the anti-condensation pipeline 400 is in communication with the first outlet of the first three-way valve 460, the second outlet of the first three-way valve 460 is in communication with the second inlet of the second three-way valve 350 through the second valve 330, the fourth outlet of the second three-way valve 350 is in communication with the input end of the indoor unit coil 300 through the throttling element 340, and the third outlet of the second three-way valve 350 is in communication with the output end of the anti-condensation pipeline 400. The outdoor unit comprises the outdoor unit coil 200 and an outdoor fan 210, the outdoor fan 210 is arranged correspondingly to the outdoor unit coil 200, and the indoor unit further comprises an indoor fan 310, and the indoor fan 310 is arranged correspondingly to the indoor unit coil 300. The first three-way valve 460, the second three-way valve 350, the outdoor fan 210 and the indoor fan 310 are all common elements in the field of air conditioners, and will not be described further here.

[0047] In the embodiment of the utility model, the air conditioner has a first anti-condensation mode and a second anti-condensation mode. In the first anti-condensation mode, the first valve 420 and the second valve 330 are both kept open, so that the refrigerant flowing out of the outdoor unit coil 200 can flow into the indoor unit coil 300 and the anti-condensation pipeline 400. In the second anti-condensation mode, the first valve 420 is kept open and the second valve 330 is kept closed, so that the refrigerant flowing out of the outdoor unit coil 200 can only flow into the anti-condensation pipeline 400. Figure 2 When the air conditioner is running in the first anti-condensation mode, part of the refrigerant flowing out of the outdoor unit coil 200 will flow into the anti-condensation pipeline 400, and another part of the refrigerant flowing out of the outdoor unit coil 200 will flow into the indoor unit coil 300. The refrigerant flowing into the indoor unit coil 300 will evaporate and absorb heat, in other words, the air conditioner is also in a refrigeration state when it is running in the first anti-condensation mode. Figure 3When the air conditioner runs the second anti-condensation mode, the refrigerant flowing out from the anti-condensation pipeline 400 flows into the indoor coil 300 after passing through the throttling element 340, and the refrigerant flowing into the indoor coil 300 can still evaporate and absorb heat, in other words, the air conditioner is also in a refrigeration state when running the second anti-condensation mode. It can be seen that the air conditioner in the embodiment of the present application can ensure normal refrigeration of the air conditioner and ensure that the user experience will not be reduced when running the first anti-condensation mode and the second anti-condensation mode. In the embodiment of the present application, the air conditioner can determine whether the current condensation phenomenon is serious according to the outdoor environment temperature, the indoor relative humidity, the surface temperature of the indoor coil 300 and the change range of the indoor temperature. When the air conditioner determines that the current condensation phenomenon is slight, the air conditioner runs the first anti-condensation mode; when the air conditioner determines that the current condensation phenomenon is relatively serious, the air conditioner runs the second anti-condensation mode, which will not be described further herein.

[0048] The technical features of the above-described embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as within the scope of the present application.

[0049] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. An air conditioner, characterized in that, include: compressor; Outdoor unit coil; An indoor unit, comprising a casing and an indoor unit coil, wherein a refrigerant flow circuit is formed between the compressor, the outdoor unit coil, and the indoor unit coil; An anti-condensation pipe is provided, wherein the input end of the anti-condensation pipe is connected to the output end of the outdoor unit coil, and the output end of the anti-condensation pipe is connected to the input end of the indoor unit coil, so that a portion of the refrigerant flowing out of the outdoor unit coil can flow through the anti-condensation pipe and into the indoor unit coil. The anti-condensation pipeline has an anti-condensation section, which is located on the shell so that the refrigerant in the anti-condensation section can increase the temperature of the shell.

2. The air conditioner according to claim 1, characterized in that: It also includes a first valve, which is located at the input end of the anti-condensation pipeline and is used to open or close the anti-condensation pipeline.

3. The air conditioner according to claim 2, characterized in that: It also includes a second valve, which is located at the input end of the indoor unit coil. The second valve is used to open or close the input end of the indoor unit coil. The second valve can close the input end of the indoor unit coil so that all the refrigerant flowing out from the outdoor unit coil can flow into the anti-condensation pipeline.

4. The air conditioner according to claim 3, characterized in that: It also includes a throttling element, which is located on the circuit and between the outdoor unit coil and the indoor unit coil. The refrigerant flowing out of the anti-condensation pipe flows through the throttling element and then into the indoor unit coil.

5. The air conditioner according to claim 1, characterized in that: The anti-condensation sections are evenly distributed on the inner wall of the shell.

6. The air conditioner according to claim 1, characterized in that: It also includes a one-way valve, which is located at the output end of the anti-condensation pipeline, and the output end of the anti-condensation pipeline is connected to the input end of the indoor unit coil through the one-way valve.

7. The air conditioner according to claim 1, characterized in that: It also includes a flow meter and a regulating valve, both of which are located on the anti-condensation pipeline, so that the refrigerant flows through the flow meter and the regulating valve in sequence before flowing into the anti-condensation section.

8. The air conditioner according to claim 1, characterized in that: The indoor unit also includes an indoor fan, which is located inside the housing and is correspondingly arranged with the indoor unit coil.

9. The air conditioner according to claim 1, characterized in that: It also includes an outdoor fan, which is installed in correspondence with the outdoor unit coil.

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