Window Air Conditioner

Abstract

The invention discloses a window air conditioner, wherein the window air conditioner comprises a housing and a fresh air device; an indoor side air duct is formed in the housing; the fresh air device is used to transport fresh air to the indoor side air duct, the fresh air device has a fresh air inlet connected to the outside, a fresh air outlet connected to the indoor side air duct, and a fresh air duct connected to the fresh air inlet and the fresh air outlet, and the fresh air device comprises a fresh air heat exchanger installed on the outdoor side of the housing, and the fresh air heat exchanger is arranged corresponding to the fresh air inlet to dehumidify the fresh air. The window air conditioner of the invention can reduce the dehumidification cost and improve the dehumidification effect, thereby greatly reducing the manufacturing cost and power.

Description

Technical Field

[0001] The invention relates to the field of air conditioning, in particular to a window type air conditioner. Background Art

[0002] In today's life, people have more and more requirements for fresh air. PTAC (Packaged Terminal Air Conditioner) window air conditioners, as the most commonly used refrigeration system in mid-to-high-end hotels in the US market, also have a strong demand. However, people now not only require fresh air, but also have new requirements for the comfort of fresh air. As a result, a number of PTACs with fresh air and fresh air dehumidification have appeared on the market. However, in order to meet the demand for dehumidified fresh air, this PTAC only adds an independent dehumidification module to the original air conditioning system, and does not integrate with the original refrigeration system. In this way, dual compressors and dual refrigeration systems must be used to meet the requirements. That is, one air conditioner, two refrigeration systems, including two compressors, two motors, two evaporators, two condensers, and two capillaries. This method is too costly, and dual compressors and dual motors will inevitably lead to defects such as high cost, high power, low energy efficiency, and high vibration and noise, and the production process is complicated.

[0003] The above contents are only used to assist in understanding the technical solution of the invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a window air conditioner, aiming to solve the technical problems of high manufacturing cost and high power of the window air conditioner with dehumidification.

[0005] To achieve the above-mentioned purpose, the window air conditioner proposed by the present invention comprises a housing and a fresh air device;

[0006] An indoor side air duct is formed in the shell;

[0007] The fresh air device is used to deliver fresh air to the indoor air duct. The fresh air device has a fresh air inlet connected to the outdoors, a fresh air outlet connected to the indoor air duct, and a fresh air duct connecting the fresh air inlet and the fresh air outlet. The fresh air device includes a fresh air heat exchanger installed on the outdoor side of the shell. The fresh air heat exchanger is arranged corresponding to the fresh air inlet to dehumidify the fresh air.

[0008] In one embodiment, the window air conditioner also includes an outdoor heat exchanger arranged on the outdoor side of the shell, the shell is provided with an outdoor air outlet on the air outlet side corresponding to the outdoor heat exchanger, the shell is provided with a fresh air inlet on the air inlet side corresponding to the fresh air heat exchanger, and the outdoor air outlet is arranged adjacent to the fresh air inlet.

[0009] In one embodiment, the fresh air device further includes a fresh air fan disposed in the fresh air duct, and the fresh air fan is used to transport fresh air to the indoor air duct.

[0010] In one embodiment, the fresh air heat exchanger and the outdoor heat exchanger are arranged side by side along the length direction of the shell.

[0011] In one embodiment, the shell has two opposite side walls and a rear end face connecting the two side walls, the outdoor air outlet and the fresh air inlet are opened on the rear end face of the shell, and at least one side wall of the shell is provided with an outdoor air inlet.

[0012] In one embodiment, an outdoor air duct is also formed in the shell, and the window air conditioner also includes an outdoor heat exchanger and an outdoor fan arranged in the outdoor air duct, the fresh air heat exchanger is arranged in the fresh air duct, the fresh air duct is connected to the air outlet side of the outdoor air duct, the connection between the fresh air duct and the outdoor air duct forms the fresh air inlet, and the outdoor fan is used to supply air to the outdoor air duct and the fresh air duct.

[0013] In one embodiment, the shell includes an indoor shell, the indoor side air duct is formed in the indoor shell, the fresh air device also includes a fresh air shell, the fresh air duct is formed in the fresh air shell, the fresh air shell is located between the fresh air heat exchanger and the indoor shell, and the air outlet surface of the fresh air heat exchanger is adapted to the fresh air inlet.

[0014] In one embodiment, the fresh air device further includes an electric auxiliary heating device disposed in the fresh air duct.

[0015] In one embodiment, the window air conditioner further includes a controller and a temperature sensor electrically connected to the controller, wherein the temperature sensor is used to detect the temperature of the airflow after heat exchange by the fresh air heat exchanger and / or the indoor temperature, and the controller is used to control the power of the electric auxiliary heating device according to the detection value of the temperature sensor.

[0016] In one embodiment, the window air conditioner further comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a dehumidification cycle pipeline and a refrigeration cycle pipeline;

[0017] The refrigerant outlet of the compressor is provided with a discharge pipe, and the refrigerant inlet is provided with a suction pipe, and the discharge pipe is connected with the outdoor heat exchanger through a first pipe;

[0018] The outdoor heat exchanger, the fresh air heat exchanger, and the suction pipe are connected in sequence through the dehumidification circulation pipeline;

[0019] The outdoor heat exchanger, the indoor heat exchanger, and the suction pipe are connected through the refrigeration cycle pipeline.

[0020] In one embodiment, the window air conditioner further comprises a switching device, the switching device is serially connected to the first pipe and the suction pipe, the refrigeration cycle pipeline and the dehumidification cycle pipeline intersect at a first intersection, the first intersection is located between the compressor and the indoor heat exchanger, and the switching device has a first switching state and a second switching state;

[0021] In the first switching state, the first pipe connected to both ends of the switching device is connected, and the suction pipe connected to both ends of the switching device is connected;

[0022] In the second switching state, the first piping between the discharge pipe and the switching device is connected to the suction pipe between the switching device and the first intersection, and the first piping between the outdoor heat exchanger and the switching device is connected to the suction pipe between the compressor and the switching device.

[0023] In one embodiment, the refrigeration cycle pipeline intersects with the dehumidification cycle pipeline at a second intersection, the second intersection is located between the indoor heat exchanger and the outdoor heat exchanger, and the window air conditioner further includes a refrigerant radiator, a one-way valve, a first one-way throttle valve, and a second one-way throttle valve;

[0024] The refrigerant radiator is connected in series to the pipeline between the outdoor heat exchanger and the second intersection;

[0025] The one-way valve is connected in series on the dehumidification circulation pipeline between the fresh air heat exchanger and the first intersection, the inlet of the one-way valve is adjacent to the fresh air heat exchanger, and the outlet of the one-way valve is adjacent to the first intersection;

[0026] The first one-way throttle valve is connected in series on the pipeline between the second intersection and the outdoor heat exchanger, the inlet of the first one-way throttle valve is adjacent to the second intersection, and the outlet of the first one-way throttle valve is adjacent to the outdoor heat exchanger;

[0027] The second one-way throttle valve is connected in series on the refrigeration cycle pipeline between the indoor heat exchanger and the second intersection, the inlet of the second one-way throttle valve is adjacent to the second intersection, and the outlet of the second one-way throttle valve is adjacent to the indoor heat exchanger.

[0028] The window air conditioner of the present invention can dehumidify the fresh air by making the fresh air device include a fresh air heat exchanger installed on the outdoor side of the housing, and the fresh air heat exchanger is arranged corresponding to the fresh air inlet. Then, the fresh air heat exchanger can directly dehumidify the fresh air blown out of the fresh air duct first, so that the non-dehumidified air can be prevented from entering the room, and the fresh air comfort can be improved. The fresh air is dehumidified from the source, so the dehumidification cost is reduced and the dehumidification effect is improved. At the same time, by making the fresh air outlet of the fresh air duct connected with the indoor side duct, the indoor heat exchanger of the indoor side duct can play the role of a condenser, so that the dehumidified fresh air can be heated to achieve constant temperature dehumidification. In this way, there is no need to set up a fresh air condenser separately, so that the manufacturing cost and power can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of an embodiment of a window air conditioner of the present invention;

[0031] Figure 2 It is a structural schematic diagram of another embodiment of the window air conditioner of the present invention, wherein the housing is removed;

[0032] Figure 3 for Figure 2 A schematic diagram of the front structure of a window air conditioner;

[0033] Figure 4 for Figure 3 A schematic diagram of the structure of a mid-window air conditioner from a top view;

[0034] Figure 5 for Figure 3 The left side structural diagram of the middle window air conditioner;

[0035] Figure 6 for Figure 3 A schematic diagram of the rear structure of a mid-window air conditioner;

[0036] Figure 7 It is a structural schematic diagram of another embodiment of the window air conditioner of the present invention;

[0037] Figure 8 It is a structural schematic diagram of another embodiment of the window air conditioner of the present invention;

[0038] Fig. 9 It is a structural schematic diagram of another embodiment of the window air conditioner of the present invention.

[0039] Description of Figure Numbers:

[0040]

[0041]

[0042] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] It should be noted that if the embodiments of the present invention 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 status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B.

[0045] The invention provides a window type air conditioner.

[0046] In the embodiment of the present invention, Figures 1 to 6 As shown, the window air conditioner housing 100 and the fresh air device 200. An indoor side air duct 150 is formed in the housing 100. The fresh air device 200 is used to deliver fresh air to the indoor side air duct 150. The fresh air device 200 has a fresh air inlet 210 connected to the outside, a fresh air outlet 220 connected to the indoor side air duct 150, and a fresh air duct 230 connected to the fresh air inlet 210 and the fresh air outlet 220. The fresh air device 200 includes a fresh air heat exchanger 240 installed on the outdoor side of the housing 100. The fresh air heat exchanger 240 is arranged corresponding to the fresh air inlet 210 to dehumidify the fresh air.

[0047] In this embodiment, the shape of the housing 100 can be square, cylindrical, etc., which can be selected according to specific use requirements and is not specifically limited here. Usually, in order to facilitate manufacturing and molding, the shape of the housing 100 is roughly square. It can be understood that the housing 100 is provided with an indoor air inlet and an indoor air outlet, the air inlet end of the indoor side air duct 150 is connected to the indoor air inlet, and the air outlet end of the indoor side air duct 150 is connected to the indoor air outlet. The cross-sectional shape of the indoor side air duct 150 can be rectangular, circular, shaped, etc., which is not specifically limited here. The extension direction of the indoor side air duct 150 is usually consistent with the length direction of the housing 100. The housing 100 has an outdoor side and an indoor side, an outdoor heat exchanger 300 is installed on the outdoor side, and an indoor heat exchanger 600 is installed on the indoor side. An indoor fan can also be arranged in the indoor side air duct 150, and the indoor fan can be a centrifugal fan or a cross-flow fan.

[0048] The fresh air inlet 210 and the fresh air outlet 220 can be rectangular, circular, long, oval, or multiple micropores, which are not specifically limited here. The fresh air device 200 is used to transport fresh air to the indoor air duct 150. A fresh air fan 250 can be set in the fresh air duct 230 to introduce the airflow from the fresh air inlet 210 into the indoor air duct 150. It is also possible to use only the negative pressure of the indoor fan by pressing the outdoor airflow into the indoor air duct 150. At this time, the fresh air outlet 220 should be set on the air inlet side of the indoor fan. Whether the window air conditioner needs cooling or constant temperature dehumidification can be determined by the indoor temperature sensing device and humidity sensing device.

[0049] The fresh air heat exchanger 240 is set corresponding to the fresh air inlet 210, and the fresh air heat exchanger 240 can be set at a position corresponding to the fresh air inlet 210 outside the fresh air duct 230, or at a position corresponding to the fresh air inlet 210 in the fresh air duct 230, or at the fresh air inlet 210. It can be understood that the fresh air heat exchanger 240 can dehumidify the fresh air, and the fresh air heat exchanger 240 can be used as an evaporator, that is, the fresh air heat exchanger 240 can be in cooling mode. At this time, the fresh air dehumidified by the fresh air heat exchanger 240 is blown to the indoor side air duct 150 through the fresh air duct 230. The dehumidified fresh air can be blown out directly from the indoor air outlet. The indoor heat exchanger 600 can also be used as a condenser to heat the fresh air blown into the indoor side air duct 150 and blow it out from the air outlet.

[0050] The window air conditioner of the present invention can dehumidify the fresh air by making the fresh air device 200 include a fresh air heat exchanger 240 installed on the outdoor side of the housing 100, and the fresh air heat exchanger 240 is arranged corresponding to the fresh air inlet 210. Then the fresh air heat exchanger 240 can directly dehumidify the fresh air blown out of the fresh air duct 230 first, so that the un-dehumidified air can be prevented from entering the room, and the fresh air comfort can be improved. The fresh air is dehumidified from the source, which reduces the dehumidification cost and improves the dehumidification effect. At the same time, by making the fresh air outlet 220 of the fresh air duct 230 communicate with the indoor side duct 150, the indoor heat exchanger 600 of the indoor side duct 150 can play the role of a condenser, so that the dehumidified fresh air can be heated to achieve constant temperature dehumidification. In this way, there is no need to set up a fresh air condenser separately, so that the manufacturing cost and power can be greatly reduced. At the same time, the dehumidification system and the heat exchange system can use a compressor 500, so that the whole machine occupies a small space, the noise is small, and the production process and efficiency are improved.

[0051] In one embodiment, please refer to Figure 1 , Figures 4 to 6 The window air conditioner also includes an outdoor heat exchanger 300 arranged on the outdoor side of the shell 100, and the shell 100 is provided with an outdoor air outlet 120 on the air outlet side corresponding to the outdoor heat exchanger 300, and the shell 100 is provided with a fresh air inlet 130 on the air inlet side corresponding to the fresh air heat exchanger 240, and the outdoor air outlet 120 is arranged adjacent to the fresh air inlet 130.

[0052] In this embodiment, it can be understood that the housing 100 has an indoor side and an outdoor side, the outdoor side is provided with an outdoor heat exchanger 300, and the indoor side is provided with an indoor heat exchanger 600. The shapes of the outdoor air outlet 120 and the fresh air inlet 130 can be rectangular, circular, elliptical, multiple micropores, etc., and their sizes can also be selected and designed as needed, and are not specifically limited here. The outdoor air outlet 120 is arranged adjacent to the fresh air inlet 130, and the outdoor air outlet 120 and the fresh air inlet 130 can be arranged on the same side of the housing 100 and close to each other. The outdoor air outlet 120 and the fresh air inlet 130 can also be arranged on two intersecting sides of the housing 100, and it is only necessary to make the outdoor air outlet 120 adjacent to the fresh air inlet 130. By making the outdoor air outlet 120 adjacent to the fresh air inlet 130, the hot air blown out from the outdoor heat exchanger 300 can enter the fresh air channel through the fresh air inlet 130. Furthermore, the outdoor heat exchanger 300 can be fully utilized as a condenser for fresh air, and the high-temperature fresh air discharged from the outdoor heat exchanger 300 and the outdoor normal-temperature fresh air are mixed together and blown to the fresh air heat exchanger 240 for dehumidification, and then blown into the indoor air duct 150. In this way, the temperature of the fresh air blown to the indoor air duct 150 is more comfortable and not too low, and the dehumidification effect of the heated fresh air is better. At the same time, it is not necessary to heat the fresh air again, or the indoor heat exchanger 600 only needs a small power to heat the fresh air, thus reducing power, improving energy efficiency, and reducing overall costs.

[0053] On the basis of the above embodiment, further, the fresh air heat exchanger 240 and the outdoor heat exchanger 300 are arranged side by side along the length direction of the housing 100. In this way, the outdoor air outlet 120 and the fresh air inlet 130 are arranged on the rear wall of the housing 100 and are arranged adjacent to each other. Compared with setting the outdoor air outlet 120 and the fresh air inlet 130 on different sides of the housing 100, the hot air blown out from the outdoor heat exchanger 300 is easier to enter the fresh air inlet 130 and will not be blocked by the wall. In addition, the fresh air heat exchanger 240 and the outdoor heat exchanger 300 are arranged side by side along the length direction of the housing 100, making full use of the space in the length direction of the housing 100, making the overall structure more compact, and the fresh air heat exchanger 240 and the outdoor heat exchanger 300 occupy less space. In addition, the heat exchange effect area of ​​the fresh air heat exchanger 240 and the outdoor heat exchanger 300 is large, and the overall heat exchange and fresh air dehumidification effect is better.

[0054] Specifically, if Figure 1As shown, the housing 100 has two opposite side walls and a rear end surface connecting the two side walls, the outdoor air outlet 120 and the fresh air inlet 130 are opened on the rear end surface of the housing 100, and at least one side wall of the housing 100 is provided with an outdoor air inlet 140. In this way, the airflow enters from the outdoor air inlet 140 on the side wall of the housing 100, is sucked into the outdoor side air duct 150 by the outdoor fan 400, flows out from the outdoor air outlet 120 after dissipating heat to the outdoor heat exchanger 300, and then passes through the high-temperature airflow blown out of the outdoor heat exchanger 300 and the outdoor normal-temperature airflow and mixes, and then enters the fresh air heat exchanger 240 through the fresh air inlet 210 for dehumidification, and finally enters the indoor side air duct 150. The fresh air inlet 130 and the outdoor air outlet 120 are both arranged on the rear end surface of the housing 100, so that the airflow blown out from the outdoor air outlet 120 enters the fresh air inlet 210 more smoothly and quickly. And the layout of the outdoor air inlet 140 and the outdoor air outlet 120 is made more reasonable. In other embodiments, the outdoor air inlet 140 can also be arranged on the rear end wall.

[0055] Please also refer to Figure 7 The fresh air device 200 further includes a fresh air fan 250 disposed in the fresh air duct 230, and the fresh air fan 250 is used to deliver fresh air to the indoor side duct 150. The fresh air fan 250 may be an axial flow fan. By arranging the fresh air fan 250 in the fresh air device 200, the fresh air fan 250 can suck the airflow outside the housing 100 into the fresh air duct 230 through the fresh air inlet 210, and deliver it to the indoor side duct 150. In this way, compared with only relying on the negative pressure of the indoor fan to suck in fresh air, the effect of sucking fresh air is better, the airflow inflow frequency is fast, and the demand for fresh air volume can be met.

[0056] In another embodiment, an outdoor air duct 150 is also formed in the shell 100, and the window air conditioner also includes an outdoor heat exchanger 300 and an outdoor fan 400 arranged in the outdoor air duct 150, the fresh air heat exchanger 240 is arranged in the fresh air duct 230, and the fresh air duct 230 is connected to the air outlet side of the outdoor air duct 150, and the connection between the fresh air duct 230 and the outdoor air duct 150 forms the fresh air inlet 210, and the outdoor fan 400 is used to supply air to the outdoor air duct 150 and the fresh air duct 230.

[0057] In this embodiment, the air inlet end of the outdoor air duct 150 is connected to the outdoor air inlet 140, and the air outlet end of the outdoor air duct 150 is connected to the outdoor air outlet 120. The cross-sectional shape of the outdoor air duct 150 can be rectangular, circular, or irregular, etc., which is not specifically limited here. The extension direction of the outdoor air duct 150 is usually consistent with the length direction of the housing 100. The outdoor fan 400 can be an axial flow fan. The air outlet side of the outdoor air duct 150 refers to the air outlet end of the outdoor fan 400. The fresh air duct 230 is directly connected to the air outlet side of the outdoor air duct 150, and the fresh air heat exchanger 240 is arranged in the fresh air duct 230. Thereby, the outdoor fan 400 can be fully utilized, and the outdoor fan 400 can blow the outdoor air flow to the outdoor air outlet 120 and the fresh air duct 230 at the same time, so that the air supply volume of the fresh air duct 230 can be increased. Furthermore, there is no need to set up a fresh air fan 250 in the fresh air duct 230, thus saving one fan and reducing the overall cost. By making the airflow flowing into the fresh air duct 230 the airflow of the outdoor air duct 150, the airflow can all be the airflow after heat exchange in the outdoor heat exchanger 300. Thus, the outdoor heat exchanger 300 can be fully utilized as a condenser for the fresh air, thereby greatly reducing the manufacturing cost and power, and improving the energy efficiency.

[0058] In one embodiment, if Figure 4 and Figure 5 As shown, the shell 100 includes an indoor shell 160, in which the indoor side air duct 150 is formed, and the fresh air device 200 also includes a fresh air shell, in which the fresh air duct 230 is formed, and the fresh air shell is located between the fresh air heat exchanger 240 and the indoor shell 160, and the air outlet surface of the fresh air heat exchanger 240 is adapted to the fresh air inlet 210.

[0059] In this embodiment, the chamber shell can be directly formed by a part of the shell 100, or it can be a separately arranged shell 100 structure. In this case, the chamber shell is arranged in the shell 100. The inner cavity of the fresh air shell forms a fresh air duct 230, and the cross-section of the fresh air duct 230 can be rectangular, circular, elliptical, etc., which is not specifically limited here. By arranging the fresh air shell between the fresh air heat exchanger 240 and the indoor shell 160, on the one hand, the overall structure is more compact and the space in the shell 100 is saved; on the other hand, the length of the fresh air duct 230 is shorter, that is, the path of the fresh air flowing from the outdoor side duct 150 to the indoor side duct 150 is shorter, so that the wind loss is smaller, the wind speed and air volume are larger, and the air flow frequency is fast. And the fresh air heat exchanger 240 is arranged outside the fresh air shell, which can facilitate the piping and disassembly of the fresh air heat exchanger 240. The air outlet surface of the fresh air heat exchanger 240 is matched with the fresh air inlet 210, that is, the size and shape of the air outlet surface of the fresh air heat exchanger 240 are matched with the fresh air inlet 210. By making the fresh air heat exchanger 240 compatible with the fresh air inlet 210, the volume of the fresh air heat exchanger 240 can be minimized while the airflow entering the fresh air duct 230 can be dehumidified, thereby saving space and improving energy efficiency.

[0060] In a preferred embodiment, the fresh air device 200 also includes an electric auxiliary heating device arranged in the fresh air duct 230. The electric auxiliary heating device can be an electric heating device such as a tubular electric heating element, a thermistor PTC, an electric heating wire, an electric heating net, a coil-type electric heating tube, etc., as long as it can achieve electric heating, and no specific limitation is made here. By setting the electric auxiliary heating device in the fresh air duct 230, the fresh air in the fresh air duct 230 can be auxiliary heated, so that there is no need to set up a fresh air condenser or use the indoor heat exchanger 600 as a fresh air condenser. Thereby, constant temperature dehumidification of the fresh air is achieved, the comfort of the fresh air is improved, and the energy efficiency ratio is greatly improved.

[0061] Specifically, the window air conditioner further includes a controller and a temperature sensor electrically connected to the controller, the temperature sensor is used to detect the temperature of the airflow after heat exchange by the fresh air heat exchanger 240 and / or the indoor temperature, and the controller is used to control the power of the electric auxiliary heating device according to the detection value of the temperature sensor. The temperature sensor can detect the temperature of the airflow after heat exchange by the fresh air heat exchanger 240, or the indoor temperature, so as to determine the temperature difference between the airflow after heat exchange by the fresh air heat exchanger 240 and the indoor temperature. The controller controls the power of the electric auxiliary heating device according to the value detected by the temperature sensor, thereby making the airflow blowing to the indoor side air duct 150 close to or equal to the indoor temperature, so that the user experience is more comfortable.

[0062] In one embodiment, please refer to Figure 2 , Figure 4 and Figure 6The housing 100 includes a chassis, the fresh air device 200 is installed on the chassis, and the window air conditioner also includes a compressor 500 installed on the chassis, and the fresh air device 200 and the compressor 500 are arranged on both sides of the length direction of the chassis. The chassis provides installation and support for the compressor 500, heat exchanger and other structures. Since the compressor 500 occupies a large space and has a large weight. By arranging the fresh air device 200 and the compressor on both sides of the length direction of the chassis, on the one hand, the layout is more reasonable, the overall arrangement is more compact, and the installation space on the chassis is fully utilized. On the other hand, the weight distribution on the chassis is more uniform, which prevents the chassis from being deformed due to uneven gravity distribution and facilitates the installation of the whole machine.

[0063] The following is a detailed introduction to the working system of the entire window air conditioner.

[0064] In one embodiment, please refer to Figure 7 , the window air conditioner further includes a compressor 500, an outdoor heat exchanger 300, an indoor heat exchanger 600, a dehumidification cycle pipeline 710 and a refrigeration cycle pipeline 720;

[0065] The refrigerant outlet of the compressor 500 is provided with a discharge pipe 510, and the refrigerant inlet is provided with a suction pipe 520. The discharge pipe 510 is connected to the outdoor heat exchanger 300 through a first pipe 730.

[0066] The outdoor heat exchanger 300, the fresh air heat exchanger 240, and the suction pipe 520 are sequentially connected through the dehumidification circulation pipeline 710;

[0067] The outdoor heat exchanger 300 , the indoor heat exchanger 600 , and the suction pipe 520 are connected through the refrigeration cycle pipeline 720 .

[0068] In the present embodiment, the compressor 500 may be a variable frequency compressor 500 or a fixed frequency compressor 500. By making the compressor 500 a variable frequency compressor 500, the dual systems of refrigeration and constant temperature dehumidification can be better realized, and a compressor 500 is saved, so that the overall structure is simpler, the cost and power are reduced, and the energy efficiency is greatly improved. It should be noted that the dehumidification circulation pipeline 710 and the refrigeration circulation pipeline 720 connected to the outdoor heat exchanger 300 can be combined at one end close to the outdoor heat exchanger 300 and then connected to the outdoor heat exchanger 300. Of course, the dehumidification circulation pipeline 710 and the refrigeration circulation pipeline 720 can also be connected to the outdoor heat exchanger 300 separately. The dehumidification circulation pipeline 710 and the refrigeration circulation pipeline 720 connected to the suction pipe 520 can be combined at one end close to the suction pipe 520 and then connected to the suction pipe 520. Of course, the dehumidification circulation pipeline 710 and the refrigeration circulation pipeline 720 can also be connected to the suction pipe 520 separately.

[0069] It is understandable that the dehumidification circulation pipeline 710 is arranged in parallel with the refrigeration circulation pipeline 720. A first valve 940 can be set in the dehumidification circulation pipeline 710 between the outdoor heat exchanger 300 and the fresh air heat exchanger 240, and a second valve 950 can be set in the refrigeration circulation pipeline 720 between the outdoor heat exchanger 300 and the fresh air heat exchanger. The dehumidification circulation pipeline 710 and the refrigeration circulation pipeline 720 here refer to the parallel parts of the two, rather than the merged parts. The first valve 940 and the second valve 950 can be solenoid valves, electronic expansion valves or throttle valves, which can control the on-off or flow rate of the pipes in which they are located. By setting the first valve 940 and the second valve 950, it is possible to control whether the refrigerant flows into the indoor heat exchanger 600 or the fresh air heat exchanger 240, thereby controlling whether the system cools or dehumidifies the fresh air.

[0070] When separate dehumidification is required, the first valve 940 is opened and the second valve 950 is closed. The compressor 500 operates at a relatively high frequency, and the high-temperature refrigerant flowing out of the compressor 500 flows to the outdoor heat exchanger 300. The high-temperature refrigerant discharged from the outdoor heat exchanger 300 is throttled by the first valve 940, and becomes a low-temperature refrigerant after reaching the fresh air heat exchanger 240, and then returns to the compressor 500 to realize the dehumidification cycle. In this way, the fresh air heat exchanger 240 can dehumidify the fresh air passing through it, and then enter the indoor air duct 150.

[0071] When cooling alone is required, the first valve 940 is closed and the second valve 950 is opened. The compressor 500 operates at a low frequency, and the high-temperature refrigerant flowing out of the compressor 500 flows to the outdoor heat exchanger 300. The high-temperature refrigerant discharged from the outdoor heat exchanger 300 is throttled by the second valve 950, and becomes a low-temperature refrigerant after reaching the indoor heat exchanger 600, and then returns to the compressor 500 to realize the dehumidification cycle. In this way, the indoor cooling mode is realized.

[0072] When the dehumidification and cooling mode needs to be turned on, both the first valve 940 and the second valve 950 are opened. The compressor 500 operates at a relatively high frequency, and the high-temperature refrigerant flowing out of the compressor 500 flows to the outdoor heat exchanger 300. A part of the high-temperature refrigerant discharged from the outdoor heat exchanger 300 passes through the second valve 950 for throttling and reaches the indoor heat exchanger 600, and the other part passes through the first valve 940 for throttling and reaches the fresh air heat exchanger 240. The two parts of low-temperature refrigerant are mixed and then return to the compressor 500. Thus, the cooling and fresh air dehumidification mode is realized.

[0073] In one embodiment, if Figure 8 and Fig. 9As shown, the window air conditioner further includes a switching device 800, the switching device 800 is serially connected to the first pipe 730 and the suction pipe 520, the refrigeration cycle pipeline 720 and the dehumidification cycle pipeline 710 intersect at a first intersection point P, the first intersection point P is located between the compressor 500 and the indoor heat exchanger 600, and the switching device 800 has a first switching state and a second switching state;

[0074] In the first switching state, the first pipe 730 connected to both ends of the switching device 800 is conductive, and the suction pipe 520 connected to both ends of the switching device 800 is conductive;

[0075] In the second switching state, the first piping 730 between the exhaust pipe 510 and the switching device 800 is connected to the suction pipe 520 between the switching device 800 and the first intersection P, and the first piping 730 between the outdoor heat exchanger 300 and the switching device 800 is connected to the suction pipe 520 between the compressor 500 and the switching device 800.

[0076] In this embodiment, the switching device 800 can be a four-way valve or other switching device 800 that prevents the refrigerant from entering the indoor heat exchanger 600 or the fresh air heat exchanger 240 and the outdoor heat exchanger 300 at the same time. The switching device 800 can increase the function of the air conditioner. It is understood that the switching device 800 is connected in series to the first piping 730 and the suction pipe 520, that is, the two ends of the switching device 800 are connected to the first piping 730, and the two ends are connected to the suction pipe 520. It is understood that when the refrigeration cycle pipeline 720 and the dehumidification cycle pipeline 710 are merged at the first intersection P and the pipeline close to the suction pipe 520 and connected to the suction pipe together, the merged pipeline is also referred to as the suction pipe 520.

[0077] When the switching device 800 is in the first switching state, the high-temperature refrigerant flowing out of the discharge pipe 510 of the compressor 500 flows to the outdoor heat exchanger 300 through the first pipe 730, and then flows to the fresh air heat exchanger 240 and the indoor heat exchanger 600 respectively, and finally returns to the suction pipe 520 of the compressor 500 through the first intersection P. By controlling the opening and closing of the first valve 940 and the second valve 950, the system can be controlled to be in the dehumidification mode and / or the cooling mode.

[0078] When the switching device 800 is in the second switching state, the high-temperature refrigerant flowing out of the discharge pipe 510 of the compressor 500 enters the fresh air heat exchanger 240 and / or the indoor heat exchanger 600 through the first pipe 730 and part of the suction pipe 520, and then the two parts of the refrigerant are mixed and flow into the outdoor heat exchanger 300, and finally return to the compressor 500 through the first pipe 730 and the suction pipe 520. At this time, a one-way valve 910 can be set in the dehumidification circulation pipeline 710 between the switching device 800 and the fresh air heat exchanger 240, so that the fresh air heat exchanger 240 can be used only as an evaporator.

[0079] In one embodiment, please refer to Fig. 9 , the refrigeration cycle pipeline 720 and the dehumidification cycle pipeline 710 intersect at a second intersection Q, the second intersection Q is located between the indoor heat exchanger 600 and the outdoor heat exchanger 300, the window air conditioner further includes a refrigerant radiator 900, a one-way valve 910, a first one-way throttle valve 920 and a second one-way throttle valve 930;

[0080] The refrigerant radiator 900 is connected in series to the pipeline between the outdoor heat exchanger 300 and the second intersection Q;

[0081] The one-way valve 910 is connected in series to the dehumidification circulation pipeline 710 between the fresh air heat exchanger 240 and the first intersection P, the inlet of the one-way valve 910 is adjacent to the fresh air heat exchanger 240, and the outlet of the one-way valve 910 is adjacent to the first intersection P;

[0082] The first one-way throttle valve 920 is connected in series to the pipeline between the second intersection Q and the outdoor heat exchanger 300, the inlet of the first one-way throttle valve 920 is adjacent to the second intersection Q, and the outlet of the first one-way throttle valve 920 is adjacent to the outdoor heat exchanger 300;

[0083] The second one-way throttle valve 930 is connected in series to the refrigeration cycle pipeline 720 between the indoor heat exchanger 600 and the second intersection Q, the inlet of the second one-way throttle valve 930 is adjacent to the second intersection Q, and the outlet of the second one-way throttle valve 930 is adjacent to the indoor heat exchanger 600.

[0084] In this embodiment, it should be noted that the refrigerant radiator 900 can reduce the temperature of the electronic control system to ensure the installability of the electronic control system. A one-way throttle valve refers to a method of throttling the flow path in only one direction, while the entire flow path is fully circulated in the other direction. The first one-way throttle valve 920 is connected in series to the pipeline between the second intersection Q and the outdoor heat exchanger 300, and can throttle from the second intersection Q to the outdoor heat exchanger 300 in one direction, thereby controlling the temperature of the refrigerant entering the outdoor heat exchanger 300. The second one-way throttle valve 930 is connected in series to the refrigeration cycle pipeline 720 between the indoor heat exchanger 600 and the second intersection Q, and can throttle from the second intersection Q to the indoor heat exchanger 600 in one direction, thereby controlling the temperature of the refrigerant entering the indoor heat exchanger 600.

[0085] The one-way valve 910 is connected in series to the dehumidification circulation pipeline 710 between the fresh air heat exchanger 240 and the first intersection P, so that the flow path can be unidirectionally guided from the fresh air heat exchanger 240 to the first intersection P. As a result, the fresh air heat exchanger 240 is used only as an evaporator. The cooling and heating efficiency of the indoor heat exchanger 600 alone is improved. By setting the first one-way throttle valve 920 and the second one-way throttle valve 930, it can be ensured that the refrigerant passing through the refrigerant radiator 900 is not lower than the ambient temperature. By setting the refrigerant radiator 900, the first one-way throttle valve 920 and the second one-way throttle valve 930, the refrigerant heat dissipation of the electronic control device can be achieved, and the effect of improving condensation can be improved.

[0086] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A window air conditioner, characterized in that: include: A housing having an indoor air duct formed therein; as well as A fresh air device is used to deliver fresh air to the indoor air duct, the fresh air device has a fresh air inlet connected to the outside, a fresh air outlet connected to the indoor air duct, and a fresh air duct connected to the fresh air inlet and the fresh air outlet, the fresh air device includes a fresh air heat exchanger installed on the outdoor side of the housing, the fresh air heat exchanger is arranged corresponding to the fresh air inlet to dehumidify the fresh air; An outdoor heat exchanger is arranged outside the outdoor of the shell, the shell is provided with an outdoor air outlet on the air outlet side corresponding to the outdoor heat exchanger, the shell is provided with a fresh air inlet on the air inlet side corresponding to the fresh air heat exchanger, and the outdoor air outlet is arranged adjacent to the fresh air inlet; The window air conditioner also includes a dehumidification circulation pipeline and a refrigeration circulation pipeline; The refrigerant outlet of the compressor of the window air conditioner is provided with a discharge pipe, and the refrigerant inlet is provided with a suction pipe, and the discharge pipe is connected to the outdoor heat exchanger of the window air conditioner through a first pipe; The outdoor heat exchanger, the fresh air heat exchanger, and the suction pipe are connected in sequence through the dehumidification circulation pipeline; The outdoor heat exchanger, the indoor heat exchanger of the window air conditioner, and the suction pipe are connected through the refrigeration cycle pipeline; The refrigeration cycle pipeline intersects with the dehumidification cycle pipeline at a second intersection, and the second intersection is located between the indoor heat exchanger and the outdoor heat exchanger. The window air conditioner also includes a refrigerant radiator, a one-way valve, a first one-way throttle valve and a second one-way throttle valve.

2. The window air conditioner according to claim 1, characterized in that: The fresh air device also includes a fresh air fan arranged in the fresh air duct, and the fresh air fan is used to transport fresh air to the indoor side air duct.

3. The window air conditioner according to claim 1, characterized in that: The fresh air heat exchanger and the outdoor heat exchanger are arranged side by side along the length direction of the shell.

4. The window air conditioner according to claim 1, wherein: The shell has two opposite side walls and a rear end surface connecting the two side walls, the outdoor air outlet and the fresh air inlet are opened on the rear end surface of the shell, and at least one side wall of the shell is provided with an outdoor air inlet.

5. The window air conditioner according to claim 1, wherein: An outdoor air duct is also formed in the shell, and the window air conditioner also includes an outdoor heat exchanger and an outdoor fan arranged in the outdoor air duct. The fresh air heat exchanger is arranged in the fresh air duct, and the fresh air duct is connected to the air outlet side of the outdoor air duct. The connection between the fresh air duct and the outdoor air duct forms the fresh air inlet, and the outdoor fan is used to supply air to the outdoor air duct and the fresh air duct.

6. The window air conditioner according to claim 1, wherein: The shell includes an indoor shell, the indoor side air duct is formed in the indoor shell, the fresh air device also includes a fresh air shell, the fresh air duct is formed in the fresh air shell, the fresh air shell is located between the fresh air heat exchanger and the indoor shell, and the air outlet surface of the fresh air heat exchanger is adapted to the fresh air inlet.

7. The window air conditioner according to claim 1, wherein: The fresh air device also includes an electric auxiliary heating device arranged in the fresh air duct.

8. The window air conditioner according to claim 7, characterized in that: The window air conditioner also includes a controller and a temperature sensor electrically connected to the controller, wherein the temperature sensor is used to detect the temperature of the airflow after heat exchange by the fresh air heat exchanger and / or the indoor temperature, and the controller is used to control the power of the electric auxiliary heating device according to the detection value of the temperature sensor.

9. The window air conditioner according to claim 1, wherein: The window air conditioner further comprises a switching device, the switching device is serially connected to the first pipe and the suction pipe, the refrigeration cycle pipeline and the dehumidification cycle pipeline intersect at a first intersection, the first intersection is located between the compressor and the indoor heat exchanger, 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 connected, and the suction pipe connected to both ends of the switching device is connected; In the second switching state, the first piping between the discharge pipe and the switching device is connected to the suction pipe between the switching device and the first intersection, and the first piping between the outdoor heat exchanger and the switching device is connected to the suction pipe between the compressor and the switching device.

10. The window air conditioner according to claim 1, wherein: The refrigerant radiator is connected in series to the pipeline between the outdoor heat exchanger and the second intersection; The refrigeration cycle pipeline and the dehumidification cycle pipeline intersect at a first intersection, the first intersection is located between the compressor and the indoor heat exchanger, the one-way valve is serially connected to the dehumidification cycle pipeline between the fresh air heat exchanger and the first intersection, the inlet of the one-way valve is adjacent to the fresh air heat exchanger, and the outlet of the one-way valve is adjacent to the first intersection; The first one-way throttle valve is connected in series on the pipeline between the second intersection and the outdoor heat exchanger, the inlet of the first one-way throttle valve is adjacent to the second intersection, and the outlet of the first one-way throttle valve is adjacent to the outdoor heat exchanger; The second one-way throttle valve is connected in series on the refrigeration cycle pipeline between the indoor heat exchanger and the second intersection, the inlet of the second one-way throttle valve is adjacent to the second intersection, and the outlet of the second one-way throttle valve is adjacent to the indoor heat exchanger.

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