Window-type air conditioner

Abstract

The application discloses a window type air conditioner, wherein the window type air conditioner comprises a shell, an indoor side heat exchanger and a fresh air device, an indoor side air duct is formed in the shell; the indoor side heat exchanger is arranged in the shell, the indoor side heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger which are arranged in a stacking mode along an air inlet direction of the indoor side air duct, the window type air conditioner has a constant temperature dehumidification mode, in the constant temperature dehumidification mode, one of the first indoor heat exchanger and the second indoor heat exchanger is in a heating mode, and the other is in a refrigeration mode; the fresh air device is used for conveying fresh air to the indoor side air duct, the fresh air device has a fresh air inlet which is communicated with the outdoor, a fresh air outlet which is communicated with the indoor side air duct and a fresh air air duct which is communicated with the fresh air inlet and the fresh air outlet. The window type air conditioner can dehumidify the indoor air and the fresh air in a constant temperature mode. When dehumidifying, the indoor heat exchanger is fully utilized, and a fresh air condenser and a fresh air evaporator do not need to be additionally arranged, so that the manufacturing cost and the power are greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, in particular to a window type air conditioner. BACKGROUND

[0002] Nowadays, people have more and more requirements for fresh air, and PTAC (Packaged Terminal Air Conditioner) window air conditioner, as the most commonly used refrigeration system in the mid-to-high-end hotel market in the United States, also has strong demand. However, people not only require fresh air, but also put forward new requirements for the comfort of fresh air, so a batch of PTACs with fresh air and fresh air dehumidification appear in the market. However, in order to meet the demand of dehumidified fresh air, the PTAC only adds an independent dehumidification module to the original air conditioning system, and does not integrate with the original refrigeration system, so it must use double compressors and double refrigeration systems to meet the demand. That is, one air conditioner, two refrigeration systems, including two compressors, two motors, two evaporators, two condensers and two capillary tubes. The disadvantages of such a double system are high cost, low energy efficiency, high noise, poor production process and low efficiency.

[0003] Moreover, the fresh air is blown to the indoor side, although the fresh air is dehumidified, but the air volume is not very large, and the air effect in the whole room cannot be changed. Even if the PTAC opens the dehumidification function, the indoor air after dehumidification will be very low in temperature, and the user will feel very uncomfortable after blowing out.

[0004] The above content is only used to assist in understanding the technical solutions of the application, and does not mean that the above content is prior art. SUMMARY

[0005] The main purpose of the present application is to provide a window type air conditioner, which aims to solve one or more of the above technical problems.

[0006] In order to achieve the above purpose, the window type air conditioner provided by the present application comprises a shell, an indoor side heat exchanger and a fresh air device;

[0007] An indoor side air duct is formed in the shell;

[0008] The indoor side heat exchanger is arranged in the shell, and the indoor side heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger which are arranged in layers along the air inlet direction of the indoor side air duct. The window type air conditioner has a constant temperature dehumidification mode, in which one of the first indoor heat exchanger and the second indoor heat exchanger is in heating mode, and the other is in cooling mode;

[0009] The fresh air device is used to deliver fresh air to the indoor air duct, and has a fresh air inlet communicated with the outdoor, a fresh air outlet communicated with the indoor air duct, and a fresh air air duct communicated with the fresh air inlet and the fresh air outlet.

[0010] In an embodiment, the shell comprises an indoor shell, the indoor shell forms the indoor air duct, the fresh air outlet is arranged on the rear side wall surface of the indoor shell, the front side wall surface of the indoor shell is provided with an indoor air inlet, and the first indoor heat exchanger and the second indoor heat exchanger are arranged in a stack along the front-rear direction.

[0011] In an embodiment, the shell further forms an outdoor air duct, the window-type air conditioner further comprises an outdoor heat exchanger and an outdoor fan arranged in the outdoor air duct, the air outlet side of the outdoor air duct is communicated with the fresh air duct, and the outdoor fan is used to deliver air to the outdoor air duct and the fresh air duct.

[0012] In an embodiment, the shell further comprises an outdoor shell, the outdoor shell forms the outdoor air duct, the fresh air device comprises a fresh air shell, the fresh air shell forms the fresh air duct, the fresh air shell is connected to the outdoor shell, and the connection part of the fresh air shell and the outdoor shell forms the fresh air inlet.

[0013] In an embodiment, the fresh air shell is arranged between the outdoor heat exchanger and the indoor air heat exchanger.

[0014] In an embodiment, the air passing area of the fresh air inlet of the fresh air shell is smaller than the air passing area of the fresh air outlet of the fresh air shell.

[0015] In an embodiment, the fresh air shell is at least partially arranged in a gradually expanding manner from the fresh air inlet to the fresh air outlet.

[0016] In an embodiment, at least one inner side wall surface of the fresh air shell is an arc surface, and the arc surface is arranged in a concave manner from the outer side of the fresh air shell to the inner side of the fresh air shell.

[0017] In an embodiment, the shell comprises a bottom plate, the fresh air device is mounted on the bottom plate, the window-type air conditioner further comprises a compressor mounted on the bottom plate, and the fresh air device and the compressor are arranged on two sides of the bottom plate in the length direction.

[0018] In an embodiment, the shell has two opposite side walls and a rear end wall connected to the two side walls, the rear end wall is provided with an outdoor air outlet communicated with the air outlet end of the outdoor air duct, and at least one side wall is provided with an outdoor air inlet communicated with the air inlet end of the outdoor air duct.

[0019] In an embodiment, the housing is further provided with an indoor air inlet and an indoor air outlet in communication with the indoor air duct, and the indoor air duct is provided with an indoor air fan, and the indoor air outlet is located above the indoor air inlet

[0020] In an embodiment, the angle between the air supply direction of the indoor air outlet and the horizontal plane is greater than 0 degrees and less than 90 degrees.

[0021] In an embodiment, the window-type air conditioner further comprises a compressor, an outdoor heat exchanger, and a refrigerant circulation pipeline;

[0022] The refrigerant outlet of the compressor is provided with an exhaust pipe, and the refrigerant inlet is provided with a suction pipe;

[0023] The exhaust pipe, the outdoor heat exchanger, the first indoor heat exchanger, the second indoor heat exchanger, and the suction pipe are sequentially connected through the refrigerant circulation pipeline.

[0024] In an embodiment, the refrigerant circulation pipeline comprises a first pipeline connecting the exhaust pipe and the outdoor heat exchanger, and a second pipeline connecting the suction pipe and the second indoor heat exchanger; and the window-type air conditioner further comprises a switching device;

[0025] The switching device is connected in series to the first pipeline and the second pipeline, and the switching device has a first switching state and a second switching state;

[0026] In the first switching state, the first pipeline connected to both ends of the switching device is conductive, and the second pipeline connected to both ends of the switching device is conductive;

[0027] In the second switching state, the first pipeline between the exhaust pipe and the switching device and the second pipeline between the switching device and the second indoor heat exchanger are conductive, and the first pipeline between the outdoor heat exchanger and the switching device and the second pipeline between the suction pipe and the switching device are conductive.

[0028] In an embodiment, the window-type air conditioner further comprises a refrigerant radiator, a one-way throttling valve, a first one-way valve, and a second one-way valve;

[0029] The refrigerant radiator is connected in series to the refrigerant circulation pipeline between the outdoor heat exchanger and the first indoor heat exchanger;

[0030] The one-way throttling valve is connected in series to the refrigerant circulation pipeline between the outdoor heat exchanger and the refrigerant radiator, the inlet of the one-way throttling valve is adjacent to the refrigerant radiator, and the outlet of the one-way valve is adjacent to the outdoor heat exchanger;

[0031] The refrigerant circulation pipeline further comprises a third pipe and a fourth pipe connecting the refrigerant radiator and the first indoor heat exchanger, and the third pipe and the fourth pipe are arranged in parallel;

[0032] The first one-way valve is connected in series on the third pipe, the inlet of the first one-way valve is adjacent to the refrigerant radiator, and the outlet of the first one-way valve is adjacent to the first indoor heat exchanger;

[0033] The second one-way valve is connected in series on the fourth pipe, the inlet of the second one-way valve is adjacent to the first indoor heat exchanger, and the outlet of the second one-way valve is adjacent to the refrigerant radiator.

[0034] The window air conditioner of the present application is characterized in that the first indoor heat exchanger and the second indoor heat exchanger are arranged in layers in the air inlet direction of the indoor air duct, the heat exchange modes of the first indoor heat exchanger and the second indoor heat exchanger are opposite, and the fresh air outlet of the fresh air duct is communicated with the indoor air duct. In this way, the first indoor heat exchanger and the second indoor heat exchanger can be arranged in one cooling mode and the other heating mode, so that the fresh air and the indoor air can be dehumidified and heated, and all the indoor air can be dehumidified. The purpose of constant temperature dehumidification is achieved, so that the temperature of the entire indoor air will not decrease in the dehumidification mode of the window air conditioner. Further, the user can not only feel the fresh air, but also the temperature of the dehumidified air is very comfortable, and there is no cool wind feeling. At the same time, the indoor heat exchanger can be fully utilized during dehumidification, and there is no need to additionally arrange a fresh air condenser and a fresh air evaporator, thereby greatly reducing the manufacturing cost and power. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the structures shown in the drawings.

[0036] Fig. 1 The structure schematic diagram of an embodiment of the window air conditioner of the present application;

[0037] Fig. 2 The structure schematic diagram of another embodiment of the window air conditioner of the present application, in which the shell is removed;

[0038] Fig. 3 The front view structure schematic diagram of the window air conditioner; Fig. 2

[0039] The structure schematic diagram of the window air conditioner from the top view; Fig. 4 Fig. 3 The structure schematic diagram of the window air conditioner from the top view;​

[0040] Fig. 5 Fig. 2 is a left view structural schematic diagram of the middle window type air conditioner of the present application; Fig. 3 Fig. 2 is a left view structural schematic diagram of the middle window type air conditioner of the present application;

[0041] Fig. 6 Fig. 2 is a left view structural schematic diagram of the middle window type air conditioner of the present application; Fig. 3 Fig. 2 is a left view structural schematic diagram of the middle window type air conditioner of the present application;

[0042] Fig. 7 Fig. 2 is a left view structural schematic diagram of the middle window type air conditioner of the present application;

[0043] Fig. 8 Fig. 2 is a left view structural schematic diagram of the middle window type air conditioner of the present application;

[0044] Fig. 9 Fig. 2 is a left view structural schematic diagram of the middle window type air conditioner of the present application.

[0045] Brief Description of the Drawings

[0046] Reference Name Reference Name Reference Name 100 Housing 210 First indoor heat exchanger 620 Suction pipe 110 Indoor side air duct 220 Second indoor heat exchanger 710 First pipe 120 Indoor shell 300 Fresh air device 720 Second pipe 121 Indoor air inlet 310 Fresh air inlet 730 Third pipe 122 Indoor air outlet 320 Fresh air outlet 740 Fourth pipe 123 Indoor fan 330 Fresh air duct 800 Switching device 130 Outdoor side air duct 340 Fresh air shell 900 Refrigerant radiator 140 Outdoor shell 341 Camber 910 One-way throttle 150 Chassis 400 Outdoor heat exchanger 920 First one-way valve 160 Outdoor air outlet 500 Outdoor fan 930 Second one-way valve 170 Outdoor air inlet 600 Compressor 940 First valve 200 Indoor side heat exchanger 610 Discharge pipe 950 Second valve

[0047] The implementation, functional features and advantages of the present application will be further explained with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0048] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0049] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions, for example, "A and / or B" includes A solution, or B solution, or A and B solutions.

[0050] The present application provides a window type air conditioner.

[0051] In the embodiments of the present application, as Fig. 1 to Fig. 6As shown, the window air conditioner comprises a shell 100, an indoor side heat exchanger 200 and a fresh air device 300. The shell 100 is internally formed with an indoor side air duct 110. The indoor side heat exchanger 200 is arranged in the shell 100, and comprises a first indoor heat exchanger 210 and a second indoor heat exchanger 220 arranged in a stack along the air inlet direction of the indoor side air duct 110. The window air conditioner has a constant temperature dehumidification mode, in which one of the first indoor heat exchanger 210 and the second indoor heat exchanger 220 is in a heating mode, and the other is in a cooling mode. The fresh air device 300 is used to deliver fresh air to the indoor side air duct 110, and has a fresh air inlet 310 in communication with the outdoor, a fresh air outlet 320 in communication with the indoor side air duct 110, and a fresh air duct 330 in communication between the fresh air inlet 310 and the fresh air outlet 320.

[0052] In the present embodiment, the shape of the shell 100 can be square, cylindrical, etc., which can be selected according to specific use requirements, and is not specifically limited here. Generally, in order to facilitate manufacturing and forming, the shape of the shell 100 is generally square. The cross-sectional shape of the indoor side air duct 110 can be rectangular, circular, irregular, etc., and is not specifically limited here. The extension direction of the indoor side air duct 110 is generally consistent with the length direction of the shell 100. It should be noted that the first indoor heat exchanger 210 and the second indoor heat exchanger 220 are arranged in a stack, and the heat exchange surfaces of the two can be arranged in close contact or with a certain gap.

[0053] It can be understood that the shell 100 is provided with an indoor air inlet 121 and an indoor air outlet 122, the air inlet end of the indoor air duct 110 is communicated with the indoor air inlet 121, and the air outlet end of the indoor air duct 110 is communicated with the indoor air outlet 122. The indoor air inlet 121 and the indoor air outlet 122 can be opened on the front side wall surface of the shell 100. Alternatively, the indoor air inlet 121 is located on the front side wall surface of the shell 100, and the indoor air outlet is located on the top surface of the shell 100. The indoor air outlet 122 can also be located at the intersection of the front side wall surface and the top surface of the shell. The indoor air inlet 121 can also be opened on the left and right side wall surfaces of the shell 100. The specific selection and design can be made according to the use requirement and the type of the indoor fan 123. The indoor fan 123 can be a centrifugal fan or a cross-flow fan, etc. By stacking the first indoor heat exchanger 210 and the second indoor heat exchanger 220 along the air inlet direction of the indoor air duct 110, the new air flow of the new air duct 330 can be blown out from the indoor air outlet 122 under the action of the indoor fan 123, the new air is mixed with the indoor air, and then the mixed air flow is introduced from the indoor air inlet 121 by the indoor fan 123, and then is blown out from the indoor air outlet 122 after passing through the first indoor heat exchanger 210 and the second indoor heat exchanger 220 in turn. In this way, not only the new air can be dehumidified at constant temperature, but also the indoor air can be circulated and dehumidified at constant temperature, so that the overall constant temperature dehumidification effect is better.

[0054] In an embodiment, the shell 100 is also provided with an indoor air inlet 121 and an indoor air outlet 122 communicated with the indoor air duct 110, the indoor air duct 110 is provided with an indoor fan 123, and the indoor air outlet 122 is located above the indoor air inlet 121. In this way, the indoor air inlet 121 and the indoor air outlet 122 can be opened on the front side wall surface of the shell 100, and the indoor air outlet 122 is located above the indoor air inlet 121. The indoor air inlet 121 can also be arranged on the front side wall surface of the shell 100, and the indoor air outlet 122 can be arranged on the top surface of the shell 100. Alternatively, the indoor air inlet 121 can also be arranged on the front side wall surface of the shell 100, and the indoor air outlet 122 can be arranged at the intersection of the front side wall surface and the top surface of the shell 100, so that the air outlet blows air obliquely upward. By arranging the indoor air outlet 122 above the indoor air inlet 121, on the one hand, the indoor side heat exchanger 200 can be arranged corresponding to the indoor air inlet, and on the other hand, when the indoor fan 123 sends the new air out from the indoor air outlet 122, the humidity of the new air is large, and the new air flow blown out from the indoor air outlet 122 flows downward, so that the mixing effect of the new air and the indoor air is good, and the new air is more easily sucked into the indoor air duct 110 from the indoor air inlet 121 below the indoor air outlet 122 by the indoor fan 123 for constant temperature dehumidification.

[0055] Specifically, the angle between the air supply direction of the indoor air outlet 122 and the horizontal plane is greater than 0 degrees and less than 90 degrees. Thus, the air supply direction of the indoor air outlet 122 is upward and obliquely blown out. Specifically, the angle between the air supply direction of the indoor air outlet 122 and the horizontal plane can be 10 degrees, 20 degrees, 35 degrees, 45 degrees, 60 degrees, 70 degrees, 80 degrees, etc. The indoor air outlet 122 blows air upward and obliquely, which can avoid directly blowing air to the user and the ceiling, and can make the airflow blow farther, so that the mixing effect is better, and the indoor temperature distribution is more uniform. Preferably, the angle between the air supply direction of the indoor air outlet 122 and the horizontal plane is 45 degrees. In this way, the molding and manufacturing are facilitated, and the overall consistency is better.

[0056] The fresh air inlet 310 and the fresh air outlet 320 can be rectangular, circular, strip-shaped, elliptical, or a plurality of micropores, which are not limited here. The fresh air device 300 is used to deliver fresh air to the indoor side air duct 110, and a fresh air fan can be arranged in the fresh air duct 330 to introduce the airflow from the fresh air inlet 310 into the indoor side air duct 110. The negative pressure of the indoor fan 123 can also be used to press the outdoor airflow into the indoor side air duct 110. At this time, the fresh air outlet 320 should be arranged on the air inlet side of the indoor fan 123. Whether the window type air conditioner needs to be cooled or constant temperature dehumidified can be determined by the temperature sensing device and the humidity sensing device in the room.

[0057] It should be noted that the window type air conditioner has a constant temperature dehumidification mode, and also has a separate cooling mode, a separate heating mode, etc. In the constant temperature dehumidification mode of the window type air conditioner, the first indoor heat exchanger 210 is in a cooling mode (as an evaporator), and the second indoor heat exchanger 220 is in a heating mode (as a condenser), or the first indoor heat exchanger 210 is in a heating mode, and the second indoor heat exchanger 220 is in a cooling mode. In this way, when the fresh air enters the indoor side air duct 110 and is blown out by the indoor air outlet 122, the mixed airflow of the indoor air and the fresh air can be sucked into the indoor side air duct 110 by the indoor fan 123, and then dehumidified\heated by the first indoor heat exchanger 210 and heated\dehumidified by the second indoor heat exchanger 220, so as to achieve the purpose of constant temperature dehumidification, and make the dehumidified indoor air and fresh air reach a comfortable temperature. In order to make the dehumidification effect better, the airflow is heated by the condenser first, and then dehumidified by the evaporator. That is, in the constant temperature dehumidification mode, the first indoor heat exchanger 210 is a condenser, and the second indoor heat exchanger 220 is an evaporator.

[0058] It can be understood that the heat exchange modes of the first indoor heat exchanger 210 and the second indoor heat exchanger 220 can also be the same, and when the window air conditioner needs to be cooled or heated alone, the first indoor heat exchanger 210 and the second heat exchanger can be simultaneously in the cooling mode (simultaneously as an evaporator) or the heating mode (simultaneously as a condenser). In this way, the temperature is lowered or raised through the first indoor heat exchanger 210 and the second indoor heat exchanger 220, so as to enable the indoor temperature to be rapidly lowered or raised, meeting the needs of the user for rapid heating or cooling.

[0059] The window air conditioner of the present application is characterized in that the first indoor heat exchanger 210 and the second indoor heat exchanger 220 are arranged in the air inlet direction of the indoor air duct 110, the heat exchange modes of the first indoor heat exchanger 210 and the second indoor heat exchanger 220 are opposite, and the fresh air outlet 320 of the fresh air duct 330 is communicated with the indoor air duct 110. In this way, the first indoor heat exchanger 210 and the second indoor heat exchanger 220 can be arranged in the cooling mode and the heating mode, respectively, so that the fresh air and the indoor air can be dehumidified and heated, all indoor air can be dehumidified, the dehumidification efficiency is improved, and the purpose of constant temperature dehumidification is achieved, so that the indoor temperature does not decrease in the dehumidification mode of the window air conditioner, and the user can feel the fresh air. Moreover, the temperature of the dehumidified air is very comfortable, and the user does not feel cold. At the same time, the indoor heat exchanger can be fully utilized in the dehumidification mode, and a fresh air condenser and a fresh air evaporator do not need to be additionally arranged, so that the manufacturing cost and the power are greatly reduced. At the same time, the dehumidification system and the heat exchange system can use one compressor 600, so that the whole machine occupies a small space and has low noise, and the production process and efficiency are improved.

[0060] Specifically, please refer to Fig. 2 and Fig. 6 The shell 100 includes an indoor shell 120, the indoor shell 120 is formed with the indoor air duct 110, the fresh air outlet 320 is arranged on the rear side wall surface of the indoor shell 120, the indoor air inlet 121 is arranged on the front side wall surface of the indoor shell 120, and the first indoor heat exchanger 210 and the second indoor heat exchanger 220 are arranged in the front-rear direction.

[0061] In the embodiment, the indoor shell 120 can be formed directly from a part of the shell 100, or can be a separate shell 100 structure, in which case the indoor shell 120 is arranged in the shell 100. The shapes of the fresh air outlet 320 and the indoor air inlet 121 can be rectangular, circular, strip-shaped, oval, or can be multiple micro-holes, which are not specifically limited herein. By arranging the indoor air inlet 121 on the front side wall of the shell 100 and the fresh air outlet 320 on the rear side wall of the indoor shell 120, the fresh air outlet 320 and the indoor air inlet 121 are arranged opposite to each other and are both located on the air inlet side of the indoor fan 123. In this way, the indoor fan 123 can more effectively suck the fresh air and indoor air into the indoor side air duct 110 for heat exchange. The indoor air inlet 121 is arranged on the front side wall, so that the indoor side air duct 110 can flow a large amount of indoor air. The heat exchange surface of the first indoor heat exchanger 210 can be arranged corresponding to the indoor air inlet 121, so that the air flowing from the air inlet can quickly flow into the first indoor heat exchanger 210 and the second indoor heat exchanger 220 for heat exchange. The first indoor heat exchanger 210 and the second indoor heat exchanger 220 are arranged in front and back layers, so that the overall structure is more compact, thereby reducing the occupied space of the indoor side heat exchanger 200 and further reducing the overall volume of the machine. The indoor air outlet 122 can be arranged on the top and / or side of the indoor shell 120.

[0062] In an embodiment, as shown in Fig. 4 and Fig. 5 The shell 100 further forms an outdoor side air duct 130 therein, and the window-type air conditioner further comprises an outdoor heat exchanger 400 and an outdoor fan 500 arranged in the outdoor side air duct 130. The air outlet side of the outdoor side air duct 130 is in communication with the fresh air duct 330, and the outdoor fan 500 is used to send air into the outdoor side air duct 130 and the fresh air duct 330.

[0063] In the embodiment, it can be understood that the housing 100 is provided with an outdoor air inlet 170 and an outdoor air outlet 160, the air inlet end of the outdoor side air duct 130 is communicated with the outdoor air inlet 170, and the air outlet end of the outdoor side air duct 130 is communicated with the outdoor air outlet 160. The cross-sectional shape of the outdoor side air duct 130 can be rectangular, circular, irregular, etc., which is not specifically limited here. The extension direction of the outdoor side air duct 130 is generally consistent with the length direction of the housing 100. The outdoor fan 500 can be an axial fan. The air outlet side of the outdoor side air duct 130 refers to the air outlet end of the outdoor fan 500. By connecting the air outlet side of the outdoor side air duct 130 with the fresh air duct 330, the outdoor fan 500 can be fully utilized, and the outdoor fan 500 can blow air to the fresh air duct 330 while blowing air to the outdoor air outlet 160. In this way, the fresh air duct 330 does not need to be additionally provided with a fresh air fan, thereby saving one fan and reducing the overall cost. The air flowing into the fresh air duct 330 through the outdoor side air duct 130 can be air after heat exchange by the outdoor heat exchanger 400, or can be air before heat exchange. If the air flowing into the fresh air duct 330 is air after heat exchange by the outdoor heat exchanger 400, the air can also be heated, and the power of the indoor condenser does not need to be set too high, thereby improving energy efficiency.

[0064] In an embodiment, as shown in Fig. 1 The housing 100 has two opposite side walls and a rear end wall connecting the two side walls, the rear end wall is provided with an outdoor air outlet 160 communicated with the air outlet end of the outdoor side air duct 130, and at least one of the side walls is provided with an outdoor air inlet 170 communicated with the air inlet end of the outdoor side air duct 130. In this way, the air flows into the housing 100 from the outdoor air inlet 170 on the side wall, is sucked into the outdoor side air duct 130 by the outdoor fan 500, and flows out of the outdoor air outlet 160 after heat dissipation of the outdoor heat exchanger 400. The layout of the outdoor air inlet 170 and the outdoor air outlet 160 is more reasonable. In other embodiments, the outdoor air inlet 170 can also be provided on the rear end wall.

[0065] Specifically, please refer to Fig. 5 and Fig. 6The shell 100 further comprises an outdoor shell 140, the outdoor shell 140 is formed with the outdoor side wind channel 130, the fresh air device 300 comprises a fresh air shell 340, the fresh air shell 340 is formed with the fresh air wind channel 330, the fresh air shell 340 is connected to the outdoor shell 140, and the connection between the fresh air shell 340 and the outdoor shell 140 forms the fresh air inlet 310. The outdoor shell 140 can be directly formed by a part of the shell 100, or it can be a separate shell 100 structure, at this time, the outdoor shell 140 is arranged in the shell 100. The inner cavity of the fresh air shell 340 forms the fresh air wind channel 330, and the cross section of the fresh air wind channel 330 can be rectangular, circular, oval, etc., which is not limited here. The shape of the fresh air inlet 310 can be circular, rectangular, oval, etc., which is not limited here. The connection between the fresh air shell 340 and the outdoor shell 140 forms the fresh air inlet 310, so that the airflow in the fresh air wind channel 330 flows from the outdoor side wind channel 130, thereby making the effect of driving the fresh air to flow into the fresh air wind channel 330 by the outdoor fan 500 better. Preferably, in order to facilitate the introduction of fresh air, an air guide louver can be arranged at the fresh air inlet 310.

[0066] In an embodiment, as shown in Fig. 4 and Fig. 5 , the fresh air shell 340 is arranged between the outdoor heat exchanger 400 and the indoor side heat exchanger 200. By arranging the fresh air shell 340 between the outdoor heat exchanger 400 and the indoor side heat exchanger 200, on the one hand, the overall structure is more compact, saving space in the shell 100; on the other hand, the length of the fresh air wind channel 330 is shorter, that is, the path of the fresh air flowing from the outdoor side wind channel 130 to the indoor side wind channel 110 is shorter, so that the wind loss is smaller, the wind speed and the air volume are larger, and the airflow inflow frequency is faster.

[0067] On the basis of the above embodiment, further, please refer to Fig. 4 , the wind area of the fresh air inlet 310 of the fresh air shell 340 is smaller than the wind area of the fresh air outlet 320 of the fresh air shell 340. In this way, the wind area of the fresh air outlet 320 is large, so that enough fresh air can be blown to the indoor side wind channel 110. By making the wind area of the fresh air inlet 310 small, the installation of the fresh air shell 340 and the outdoor shell 140 is facilitated.

[0068] Further, the fresh air shell 340 is at least partially arranged in a diverging manner from the fresh air inlet 310 to the fresh air outlet 320. The fresh air shell 340 can be arranged in a diverging manner from the fresh air inlet 310 to the fresh air outlet 320, or can be arranged in a diverging manner only in a middle section, a section close to the fresh air inlet 310 or a section close to the fresh air outlet. By arranging the fresh air shell 340 in a diverging manner at least partially, the air flow can be expanded at the diverging section when the fresh air flows from the fresh air inlet 310 to the fresh air outlet 320, so that the noise can be effectively reduced, and the air flow can be smoother, and the fresh air flow demand can be met.

[0069] In a preferred embodiment, referring again to Fig. 4 , the fresh air shell 340 is arranged in a diverging manner from the fresh air shell 340 outside to the fresh air shell 340 inside. When the fresh air shell 340 is arranged in a square shape, the fresh air shell 340 has a plurality of inner side walls, and at least one of the inner side walls is arranged in a diverging manner. When the fresh air shell 340 is arranged in a circular shape, the fresh air shell 340 has only one inner side wall, and the inner side wall of the fresh air shell 340 is arranged in a diverging manner. By arranging at least one inner side wall of the fresh air shell 340 in a diverging manner, the air flow can be smoother, the air resistance and air loss can be reduced, and the noise can be further reduced.

[0070] In an embodiment, as shown in Fig. 2 , Fig. 4 and Fig. 6 , the shell 100 includes a base plate 150, the fresh air device 300 is mounted on the base plate 150, the window air conditioner further includes a compressor 600 mounted on the base plate 150, and the fresh air device 300 and the compressor 600 are arranged on two sides of the base plate 150 in a length direction. The base plate 150 provides mounting and support for the compressor 600, the heat exchanger and other structures. Since the compressor 600 occupies a large space and has a large weight. By arranging the fresh air device 300 and the compressor on two sides of the base plate 150 in a length direction, on the one hand, the layout is more reasonable, the overall arrangement is more compact, and the mounting space on the base plate 150 is fully utilized, and on the other hand, the weight distribution on the base plate 150 is more uniform, the base plate 150 is prevented from being deformed due to uneven gravity distribution, and the installation of the whole machine is facilitated.

[0071] The working system of the whole window air conditioner will be described below.

[0072] In an embodiment, referring to Fig. 7 , the window air conditioner further includes a compressor 600, an outdoor heat exchanger 400 and a refrigerant circulation pipeline;

[0073] The refrigerant outlet of the compressor 600 is provided with a discharge pipe 610, and the refrigerant inlet is provided with a suction pipe 620;

[0074] The discharge pipe 610, the outdoor heat exchanger 400, the first indoor heat exchanger 210, the second indoor heat exchanger 220, and the suction pipe 620 are sequentially communicated through the refrigerant circulation pipeline.

[0075] In the embodiment, the compressor 600 can be a variable frequency compressor 600 or a fixed frequency compressor 600. By making the compressor 600 a variable frequency compressor 600, the refrigeration and constant temperature dehumidification dual systems can be better realized, one compressor 600 is saved, the overall structure is simpler, the cost and power are reduced, and the energy efficiency is greatly improved. It can be understood that a first valve 940 can be arranged on the refrigerant circulation pipeline between the outdoor heat exchanger 400 and the first indoor heat exchanger 210, and a second valve 950 can be arranged on the refrigerant circulation pipeline between the first indoor heat exchanger 210 and the second indoor heat exchanger 220. The first valve 940 and the second valve 950 can be solenoid valves, electronic expansion valves, or throttling valves, which can control the on-off or flow of the pipelines. By arranging the first valve 940 and the second valve 950, it can be controlled whether the refrigerant flows into the first indoor heat exchanger 210 and the second indoor heat exchanger 220, so as to control whether the first indoor heat exchanger 210 and the second indoor heat exchanger 220 participate in refrigeration or heating.

[0076] When it is needed to start the dehumidification mode, the high-temperature refrigerant flowing out of the compressor 600 enters the outdoor heat exchanger 400 (condenser), so that the high-temperature refrigerant out of the outdoor heat exchanger 400 reaches the first valve 940, at this time, the first valve 940 can be fully or mostly opened, so that the temperature of the first indoor heat exchanger 210 is equal to or slightly less than the temperature of the outdoor heat exchanger 400, at this time, the first indoor heat exchanger 210 is a condenser, which plays a role of heating the air flow, then the second valve 950 plays a role of capillary throttling, after throttling, the refrigerant becomes low-temperature refrigerant, which flows through the second indoor heat exchanger 220, at this time, the second indoor heat exchanger 220 is an evaporator, which plays a role of cooling, that is, dehumidification, the refrigerant out of the second indoor heat exchanger 220 returns to the compressor 600. In this way, the fresh air and indoor air mix, pass through the first indoor heat exchanger 210 to be heated first, then pass through the second indoor heat exchanger 220 to be cooled and dehumidified, enter the indoor air duct 110, and are blown out from the indoor air outlet 122, so as to achieve the purpose of dehumidification and not blowing cold air in the room, and the dehumidification effect is better. Of course, the first indoor heat exchanger 210 can be an evaporator, and the second indoor heat exchanger 220 can be a condenser, then the fresh air and indoor air are first cooled and dehumidified, and then heated, which can also achieve the purpose of constant temperature dehumidification.

[0077] When dehumidification is not needed and only refrigeration mode is needed, the high-temperature refrigerant flowing out of the compressor 600 enters the outdoor heat exchanger 400 (condenser), and the high-temperature refrigerant flowing out of the outdoor heat exchanger 400 reaches the first valve 940. At this time, the first valve 940 is slightly opened to play a capillary flow role, so that the temperature of the first indoor heat exchanger 210 is much smaller than the temperature of the outdoor heat exchanger 400. At this time, the first indoor heat exchanger 210 is an evaporator and plays a role of cooling. Then, the low-temperature refrigerant flowing out of the first indoor heat exchanger 210 reaches the second valve 950. The second valve 950 is fully or mostly opened to play a role of completely passing or re-throttling. The refrigerant passing through the second valve 950 flows through the second indoor heat exchanger 220. At this time, the second indoor heat exchanger 220 is an evaporator and plays a role of secondary cooling. The refrigerant flowing out of the second indoor heat exchanger 220 returns to the compressor 600. In this way, the new air and indoor air are mixed, then cooled by the first indoor heat exchanger 210, and then secondarily cooled by the second indoor heat exchanger 220. After entering the indoor air duct 110, the air is blown out from the indoor air outlet 122, so that the purpose of rapidly cooling the indoor air can be achieved.

[0078] In an embodiment, as shown in Fig. 8 and Fig. 9 The refrigerant circulation pipeline includes a first pipe 710 connecting the discharge pipe 610 and the outdoor heat exchanger 400, and a second pipe 720 connecting the suction pipe 620 and the second indoor heat exchanger 220. The window-type air conditioner further includes a switching device 800.

[0079] The switching device 800 is connected in series with the first pipe 710 and the second pipe 720. The switching device 800 has a first switching state and a second switching state.

[0080] In the first switching state, the first pipe 710 connected to both ends of the switching device 800 is conductive, and the second pipe 720 connected to both ends of the switching device 800 is conductive.

[0081] In the second switching state, the first pipe 710 between the discharge pipe 610 and the switching device 800 and the second pipe 720 between the switching device 800 and the second indoor heat exchanger 220 are conductive, and the first pipe 710 between the outdoor heat exchanger 400 and the switching device 800 and the second pipe 720 between the suction pipe 620 and the switching device 800 are conductive.

[0082] In the present embodiment, the switching device 800 can be a four-way valve or other switching device 800 that does not allow the refrigerant to flow into the outdoor heat exchanger 400 and the second indoor heat exchanger 220 at the same time. Through the switching device 800, the functions of the air conditioner can be increased. It can be understood that the switching device 800 is connected in series to the first pipe 710 and the second pipe 720, i.e., the switching device 800 is connected at both ends to the first pipe 710 and at both ends to the second pipe 720.

[0083] When the switching device 800 is in the first switching state, the high-temperature refrigerant flowing out of the discharge pipe 610 of the compressor 600 flows through the first pipe 710 to the outdoor heat exchanger 400, and then flows into the first indoor heat exchanger 210 and the second indoor heat exchanger 220 in turn, and finally flows back to the compressor 600 through the second pipe 720 and the suction pipe 620. By controlling the opening degrees of the first valve 940 and the second valve 950, the first indoor heat exchanger 210 can be controlled to be in a cooling state or a heating state, so that the entire system can be controlled to be in a constant-temperature dehumidification mode or a dual-cooling system.

[0084] When the switching device 800 is in the second switching state, the high-temperature refrigerant flowing out of the discharge pipe 610 of the compressor 600 flows through the first pipe 710 and the second pipe 720 to the second indoor heat exchanger 220, and then flows to the first indoor heat exchanger 210 and the outdoor heat exchanger 400, and finally flows back to the compressor 600 through the first pipe 710, the second pipe 720, and the suction pipe 620. By controlling the opening degrees of the first valve 940 and the second valve 950, the first indoor heat exchanger 210 can be controlled to be in a cooling state or a heating state, so that the entire system can be controlled to be in a dehumidification mode or a dual-heating state. The control of the first indoor heat exchanger 210 to be in a cooling state or a heating state by the first valve 940 and the second valve 950 is similar to the above-mentioned embodiment without switching state, and will not be described here.

[0085] In an embodiment, referring again to Fig. 9 , the window-type air conditioner further comprises a refrigerant radiator 900, a one-way throttling valve 910, a first one-way valve 920, and a second one-way valve 930;

[0086] The refrigerant radiator 900 is connected in series to the refrigerant circulation pipeline between the outdoor heat exchanger 400 and the first indoor heat exchanger 210;

[0087] The one-way throttling valve 910 is connected in series to the refrigerant circulation pipeline between the outdoor heat exchanger 400 and the refrigerant radiator 900, the inlet of the one-way throttling valve 910 is adjacent to the refrigerant radiator 900, and the outlet of the one-way valve is adjacent to the outdoor heat exchanger 400;

[0088] The refrigerant circulation pipeline further comprises a third pipe 730 and a fourth pipe 740 connecting the refrigerant radiator 900 and the first indoor heat exchanger 210, and the third pipe 730 and the fourth pipe 740 are arranged in parallel;

[0089] The first one-way valve 920 is connected in series on the third pipe 730, the inlet of the first one-way valve 920 is adjacent to the refrigerant radiator 900, and the outlet of the first one-way valve 920 is adjacent to the first indoor heat exchanger 210;

[0090] The second one-way valve 930 is connected in series on the fourth pipe 740, the inlet of the second one-way valve 930 is adjacent to the first indoor heat exchanger 210, and the outlet of the second one-way valve 930 is adjacent to the refrigerant radiator 900.

[0091] In the embodiment, it is to be noted that the refrigerant radiator 900 can reduce the temperature of the electronic control system to ensure the installation of the electronic control system. The one-way throttle valve 910 refers to throttling the flow path in only one direction, while the entire flow path is completely open in the other direction. The one-way throttle valve 910 is connected in series on the refrigerant circulation pipeline between the outdoor heat exchanger 400 and the refrigerant radiator 900, and can throttle the flow path from the refrigerant radiator 900 to the outdoor heat exchanger 400 in one direction, so that the temperature of the refrigerant entering the outdoor heat exchanger 400 can be controlled. The first one-way valve 920 is connected in series on the third pipe 730, so that the flow path from the refrigerant radiator 900 to the first indoor heat exchanger 210 can be one-way conducted. The second one-way valve 930 is connected in series on the fourth pipe 740, so that the flow path from the first indoor heat exchanger 210 to the refrigerant radiator 900 can be one-way conducted. By arranging the one-way throttle valve 910, the first one-way valve 920 and the second one-way valve 930, it can be ensured that the refrigerant passing through the refrigerant radiator 900 is not lower than the ambient temperature. By arranging the refrigerant radiator 900, the one-way throttle valve 910, the first one-way valve 920 and the second one-way valve 930, the refrigerant of the electronic control device can be cooled, and the effect of improving condensation can be achieved.

[0092] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made according to the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A window-type air conditioner characterized by comprising: The window air conditioner comprises: a shell, a chamber is formed in the shell; an indoor heat exchanger is arranged in the shell, the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger which are arranged in a stack along the air inlet direction of the chamber, the window air conditioner has a constant temperature dehumidification mode, in the constant temperature dehumidification mode, one of the first indoor heat exchanger and the second indoor heat exchanger is in a heating mode, and the other is in a cooling mode; a fresh air device is used for conveying fresh air to the chamber, the fresh air device has a fresh air inlet which is communicated with the outside, a fresh air outlet which is communicated with the chamber, and a fresh air channel which is communicated with the fresh air inlet and the fresh air outlet; the shell further forms an outdoor channel, the window air conditioner further comprises an outdoor heat exchanger and an outdoor fan which are arranged in the outdoor channel, the air outlet side of the outdoor channel is communicated with the fresh air channel, and the outdoor fan is used for conveying air into the outdoor channel and the fresh air channel; the air flow in the fresh air channel is the air flow which has been exchanged by the outdoor heat exchanger, so as to reduce the power of the one of the first indoor heat exchanger and the second indoor heat exchanger which is in the heating mode in the constant temperature dehumidification mode; the shell further comprises an outdoor shell which forms the outdoor channel, the fresh air device comprises a fresh air shell which forms the fresh air channel, the fresh air shell is connected to the outdoor shell, and the connection part of the fresh air shell and the outdoor shell forms the fresh air inlet; the air passing area of the fresh air inlet of the fresh air shell is smaller than the air passing area of the fresh air outlet of the fresh air shell; at least one of the chamber and the outdoor channel extends along the length direction of the shell.

2. The window air conditioner as set forth in claim 1, wherein The shell comprises an indoor shell which forms the chamber, the fresh air outlet is arranged on the rear side wall of the indoor shell, the front side wall of the indoor shell is provided with an indoor air inlet, and the first indoor heat exchanger and the second indoor heat exchanger are arranged in a stack along the front-rear direction.

3. The window air conditioner as set forth in claim 1, wherein The fresh air shell is arranged between the outdoor heat exchanger and the indoor heat exchanger.

4. The window air conditioner as set forth in claim 1, wherein The fresh air shell is at least partially arranged in a gradually expanding manner from the fresh air inlet to the fresh air outlet.

5. The window air conditioner as set forth in claim 4, wherein At least one inner side wall of the fresh air shell is arranged in an arc surface which is concave from the outer side of the fresh air shell to the inner side of the fresh air shell.

6. The window air conditioner as set forth in claim 1, wherein The shell comprises a bottom plate, the fresh air device is mounted on the bottom plate, the window air conditioner further comprises a compressor which is mounted on the bottom plate, and the fresh air device and the compressor are arranged on two sides of the length direction of the bottom plate.

7. The window air conditioner as set forth in claim 1, wherein The shell has two opposite side walls and a rear end wall which connects the two side walls, the rear end wall is provided with an outdoor air outlet which is communicated with the air outlet end of the outdoor channel, and at least one side wall is provided with an outdoor air inlet which is communicated with the air inlet end of the outdoor channel.

8. The window air conditioner as set forth in claim 1, wherein The shell is further provided with an indoor air inlet and an indoor air outlet which are communicated with the chamber, an indoor fan is arranged in the chamber, and the indoor air outlet is located above the indoor air inlet.

9. The window air conditioner as set forth in claim 8, wherein The angle between the air supply direction of the indoor air outlet and the horizontal plane is greater than 0 degrees and less than 90 degrees.

10. The window air conditioner according to any of claims 1 to 9, wherein The window type air conditioner further comprises an outdoor heat exchanger and a refrigerant circulation pipeline; The refrigerant outlet of the compressor of the window type air conditioner is provided with an exhaust pipe, and the refrigerant inlet is provided with a suction pipe; The exhaust pipe, the outdoor heat exchanger of the window type air conditioner, the first indoor heat exchanger, the second indoor heat exchanger, and the suction pipe are sequentially communicated through the refrigerant circulation pipeline.

11. The window air conditioner as set forth in claim 10, wherein The refrigerant circulation pipeline comprises a first pipe connecting the exhaust pipe and the outdoor heat exchanger, and a second pipe connecting the suction pipe and the second indoor heat exchanger; the window type air conditioner further comprises a switching device; The switching device is connected in series with the first pipe and the second pipe, and the switching device has a first switching state and a second switching state; In the first switching state, the first pipe connected to both ends of the switching device is conductive, and the second pipe connected to both ends of the switching device is conductive; In the second switching state, the first pipe between the exhaust pipe and the switching device and the second pipe between the switching device and the second indoor heat exchanger are conductive, and the first pipe between the outdoor heat exchanger and the switching device and the second pipe between the suction pipe and the switching device are conductive.

12. The window air conditioner as set forth in claim 1, wherein The window type air conditioner further comprises a refrigerant radiator, a one-way throttling valve, a first one-way valve, and a second one-way valve; The refrigerant radiator is connected in series with the outdoor heat exchanger and the first indoor heat exchanger in the refrigerant circulation pipeline; The one-way throttling valve is connected in series with the outdoor heat exchanger and the refrigerant radiator in the refrigerant circulation pipeline, the inlet of the one-way throttling valve is adjacent to the refrigerant radiator, and the outlet of the one-way valve is adjacent to the outdoor heat exchanger; The refrigerant circulation pipeline further comprises a third pipe and a fourth pipe connecting the refrigerant radiator and the first indoor heat exchanger, and the third pipe and the fourth pipe are arranged in parallel; The first one-way valve is connected in series with the third pipe, the inlet of the first one-way valve is adjacent to the refrigerant radiator, and the outlet of the first one-way valve is adjacent to the first indoor heat exchanger; The second one-way valve is connected in series with the fourth pipe, the inlet of the second one-way valve is adjacent to the first indoor heat exchanger, and the outlet of the second one-way valve is adjacent to the refrigerant radiator.

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