Internal and external integrated air conditioning unit and air conditioner

Abstract

The invention relates to an internal and external integrated air conditioning unit and an air conditioner, relates to the technical field of air conditioners, and aims to solve the problems that an air conditioner under a heating working condition frequently enters a defrosting working condition and cannot perform heating under the defrosting working condition. A machine shell of the internal and external integrated air conditioning unit comprises a first cavity, a second cavity, a first air inlet and a first air outlet, wherein the first cavity and the second cavity are arranged in a separated mode; the outdoor heat exchanger is located in the second cavity. The first fan and the indoor heat exchanger are located in the first cavity so as to drive air to sequentially flow through the first air inlet, the indoor heat exchanger and the first air outlet. The outer side wall of the defrosting air channel in the machine shell is adjacent to or makes contact with the outdoor heat exchanger. The defrosting air duct comprises a second air inlet and a second air outlet which communicate with the first cavity, so that the first fan drives part of air flowing through the indoor heat exchanger to flow in the first cavity and the defrosting air duct in a reciprocating mode. And the outdoor heat exchanger is heated and defrosted through the defrosting air duct, and the air conditioning unit is in a heating working condition.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to an integrated indoor and outdoor air conditioner unit and an air conditioner. Background Art

[0002] During the heating operation of an air conditioner, frosting may occur on its outdoor heat exchanger, and the frost attached to the outer surface of the outdoor heat exchanger will affect the heat exchange efficiency and heating effect of the air conditioner.

[0003] Currently, for an air conditioner to defrost, the unit is controlled to switch from the heating operation mode to the cooling operation mode (i.e., the defrosting operation mode) so that the refrigerant in the outdoor heat exchanger can remove the frost on the outer surface by vaporizing and releasing heat. However, the indoor unit of the air conditioner is in the cooling state during the defrosting operation mode, and the outdoor heat exchanger frequently frosts during the heating operation mode, both of which will affect the user experience during the heating operation mode. Summary of the Invention

[0004] This application provides an integrated indoor and outdoor air conditioner unit and an air conditioner to solve the problem that the air conditioner frequently enters the defrosting operation mode during the heating operation mode and cannot provide heating during the defrosting operation mode.

[0005] In a first aspect, this application provides an integrated indoor and outdoor air conditioner unit, including a housing, an outdoor heat exchanger, an indoor heat exchanger, and a first blower. The housing includes a first chamber and a second chamber that are separated, as well as a first air inlet and a first air outlet that communicate with the first chamber. The outdoor heat exchanger is located in the second chamber, and the indoor heat exchanger is located in the first chamber. The first blower is located in the first chamber to drive air to flow through the first air inlet, the indoor heat exchanger, and the first air outlet in sequence. Among them, the housing further includes a defrosting air duct, and the outer side wall of the defrosting air duct is adjacent to or in contact with the outdoor heat exchanger. The defrosting air duct includes a second air inlet and a second air outlet that communicate with the first chamber, so that the first blower drives a part of the air flowing through the indoor heat exchanger to flow back and forth between the first chamber and the defrosting air duct.

[0006] Optionally, the integrated indoor and outdoor air conditioner unit further includes a damper assembly, and the damper assembly is installed at least at one of the second air inlet and the second air outlet. When the damper assembly is opened, the defrosting air duct is opened. When the damper assembly is closed, the defrosting air duct is closed.

[0007] Optionally, the damper assembly includes at least two first louver blades installed at the second air inlet. Along the air flow direction, at least two first louver blades are sequentially distributed and rotatably installed at the opening of the second air inlet. When the first louver blades rotate to a first preset position to block the second air inlet and are in the closed state, the damper assembly is closed. When the first louver blades rotate to a second preset position to open the second air inlet and are in the open state, the damper assembly is opened.

[0008] Optionally, along the air flow direction, the second air inlet in the first chamber is located between the first fan and the first air outlet. When multiple first louver plates are in the open state, the first louver plates rotate in a direction perpendicular to the second air inlet until the size of the first chamber becomes the depth dimension, pointing from the first fan to the first air outlet along the air flow direction, and the depth dimensions of the first louver plates increase in sequence.

[0009] Optionally, the damper assembly includes at least two second louver plates installed at the second air outlet. The at least two second louver plates are distributed in sequence and rotatably installed at the opening of the second air outlet to open or close the second air outlet.

[0010] Optionally, the integrated indoor and outdoor air conditioner unit further includes a first temperature sensor, a second temperature sensor, and a controller. The first temperature sensor is used to detect the ambient temperature and obtain a first temperature parameter, and the second temperature sensor is used to detect the temperature of the outdoor heat exchanger and obtain a second temperature parameter. The controller is electrically connected to the first temperature sensor, the second temperature sensor, and the damper assembly, and the controller is used to control the damper assembly to open or close the defrosting air duct according to the first temperature parameter and the second temperature parameter.

[0011] Optionally, in the heating mode, when the difference between the first temperature parameter and the second temperature parameter is greater than or equal to a first preset temperature, and the second temperature parameter is less than 0°C, the controller controls the damper assembly to open the defrosting air duct.

[0012] Optionally, in the heating mode, when the difference between the first temperature parameter and the second temperature parameter is less than the first preset parameter, or when the second temperature parameter is greater than or equal to 0°C, the controller controls the damper assembly to close the defrosting air duct.

[0013] Optionally, the integrated indoor and outdoor air conditioner unit further includes an electric heater. The electric heater is located in the first chamber and is arranged upstream of the second air inlet along the air flow direction. The controller is electrically connected to the electric heater. In the heating mode, when the difference between the first temperature parameter and the second temperature parameter is greater than or equal to a second preset temperature, the second preset temperature is greater than the first preset temperature, and the second temperature parameter is less than 0°C, the controller controls the damper assembly to open the defrosting air duct, and the controller controls the electric heater to be in the on state.

[0014] Optionally, in the heating mode, when the difference between the first temperature parameter and the second temperature parameter is greater than or equal to a third preset temperature, the third preset temperature is greater than the second preset temperature, and the second temperature parameter is less than 0°C, the controller controls the defrosting air duct and the electric heater to remain in the on state, and the controller controls the integrated indoor and outdoor air conditioner unit to switch to the air supply mode.

[0015] Optionally, the casing further includes a first partition board located between the first chamber and the second chamber to separate the first chamber and the second chamber. The side wall of the defrosting air duct includes a part of the first partition board.

[0016] Optionally, the outdoor heat exchanger is disposed in the second chamber and is in contact with the first partition board at the side wall of the defrosting air duct.

[0017] Optionally, the second chamber is located above the first chamber.

[0018] Optionally, the first chamber, the defrosting air duct, and the outdoor heat exchanger are distributed in sequence from bottom to top.

[0019] Optionally, the vertical projection of the outdoor heat exchanger at the first partition board overlaps with the vertical projection of the defrosting air duct at the first partition board.

[0020] Optionally, in a cross-section perpendicular to the extending direction of the defrosting air duct, the cross-sectional shape of the defrosting air duct includes an arc structure.

[0021] Optionally, in the first chamber, the second air inlet is located between the first blower and the first air outlet along the air flow direction.

[0022] Optionally, in the first chamber, the second air outlet is disposed upstream of the first blower along the air flow direction.

[0023] In a second aspect, the present application further provides an air conditioner, including the indoor and outdoor integrated air conditioner unit in the first aspect.

[0024] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art: When the indoor heat exchanger is a condenser and the outdoor heat exchanger is an evaporator so that the indoor and outdoor integrated air conditioner unit is in a heating working condition. The first blower can drive air to flow through the first air inlet, the indoor heat exchanger, and the first air outlet in sequence. Since the refrigerant in the heating working condition liquefies and releases heat in the indoor heat exchanger, the air flowing through the indoor heat exchanger can be heated. Driven by the first blower, part of the hot air flowing through the indoor heat exchanger can flow into the defrosting air duct through the second air inlet, thereby heating the defrosting air duct. Moreover, the hot air flowing into the defrosting air duct can also flow back to the first chamber through the second air outlet, so that this part of the hot air can flow reciprocally between the first chamber and the defrosting air duct.

[0025] Since the outer side wall of the defrosting air duct is adjacent to or in contact with the outdoor heat exchanger, the hot air flowing through the defrosting air duct can radiate or transfer heat to the adjacent outdoor heat exchanger through the side wall of the defrosting air duct while heating the defrosting air duct, so as to improve the gasification and heat absorption efficiency of the refrigerant in the outdoor heat exchanger.

[0026] That is, in the heating mode, the indoor heat exchanger can transfer heat to the outdoor heat exchanger through the defrosting air duct to slow down or avoid the situation where the surface temperature of the outdoor heat exchanger is too low, which is beneficial to increasing the frosting cycle of the outdoor heat exchanger. Moreover, even if the surface of the outdoor heat exchanger is already frosted, the outdoor heat exchanger can be heated and defrosted through the indoor heat exchanger and the defrosting air duct, without switching to the defrosting mode (i.e., the cooling mode) for defrosting. This can not only avoid the leakage or blowing of cold air from the first air outlet, but also heat the indoor air while defrosting the outdoor heat exchanger, so that users can have a better experience in the heating mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present invention and, together with the specification, are used to explain the principles of the present invention.

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] One or more embodiments are exemplarily illustrated by the pictures in the corresponding accompanying drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the figures do not constitute a scale limitation.

[0030] Figure 1 A three-dimensional structural schematic diagram of an internal and external integrated air conditioner unit provided by an embodiment of the present application; Figure 2 A position structural schematic diagram of the first chamber and the defrosting air duct in the internal and external integrated air conditioner unit provided by an embodiment of the present application; Figure 3 is Figure 2 A three-dimensional structural schematic diagram of the machine shell shown in Figure 4 is Figure 3 An internal side view of the first chamber shown in Figure 5 A connection control schematic diagram of the controller in the internal and external integrated air conditioner unit provided by an embodiment of the present application; Figure 6 is Figure 2 An internal structural schematic diagram of the first chamber shown in Figure 7 is Figure 6 A top view of the Figure 8A cross-sectional view of the internal and external integrated air conditioner unit provided by the embodiment of the present application; Figure 9 is Figure 8 A schematic cross-sectional view of the defrosting air duct shown in Figure 10 is Figure 8 A schematic diagram of the positional relationship between the defrosting air duct and the outdoor heat exchanger shown in

[0031] Explanation of reference numerals: 100, internal and external integrated air conditioner unit; 10, housing; 11, first chamber; 111, first air inlet; 112, first air outlet; 113, windward chamber; 114, fan chamber; 115, air supply channel; 12, second chamber; 13, defrosting air duct; 131, second air inlet; 132, second air outlet; 14, first partition; 15, second partition; 20, outdoor heat exchanger; 30, indoor heat exchanger; 40, first fan; 50, damper assembly; 51, first louver; 52, second louver; 60, controller; 71, first temperature sensor; 72, second temperature sensor; 73, electric heater; d, depth dimension. Detailed implementation manners

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0033] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] For ease of description, spatial relative relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "over", "front", "rear", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation other than the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or change in motion state, then these directional indications will change accordingly. For example, an element described as "below other elements or features" or "beneath other elements or features" will subsequently be oriented as "above other elements or features" or "over other elements or features". Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0035] Figure 1 FIG. 4 is a schematic three-dimensional structure diagram of an internal and external integrated air conditioner unit provided by an embodiment of the present application. Figure 2 FIG. 6 is a schematic position structure diagram of a first chamber and a defrosting air duct in the internal and external integrated air conditioner unit provided by an embodiment of the present application. Figure 3 is Figure 2 a schematic three-dimensional structure diagram of a housing including a first chamber shown in FIG. Figure 4 is Figure 3 an internal side view of the first chamber shown in FIG. Figure 5 FIG. 16 is a schematic connection control diagram of a controller in the internal and external integrated air conditioner unit provided by an embodiment of the present application. Figure 6 is Figure 2 a schematic internal structure diagram of the first chamber shown in FIG. Figure 7 is Figure 6 a top view of the structure shown in FIG. Figure 8 FIG. 26 is a schematic cross-sectional view of the internal and external integrated air conditioner unit provided by an embodiment of the present application. Figure 9 is Figure 8 a schematic cross-sectional view of a defrosting air duct shown in FIG. Figure 10 is Figure 8 a schematic positional relationship diagram of the defrosting air duct and an outdoor heat exchanger shown in FIG.

[0036] Please refer to Figures 1 to 10 , an embodiment of the present application provides an internal and external integrated air conditioner unit 100 to solve the problem that the air conditioner frequently enters the defrosting condition under the heating condition and cannot perform heating under the defrosting condition.

[0037] Among them, the integrated indoor and outdoor air conditioner unit 100 provided in the embodiments of the present application is an air conditioner unit with an integrated structure of an indoor unit and an outdoor unit. Taking a window air conditioner as an example, the window air conditioner can be installed on a wall or a window frame so that the air inlet and outlet of the indoor unit are located indoors, and the air inlet and outlet of the outdoor unit are located outdoors. Alternatively, the integrated indoor and outdoor air conditioner unit 100 can also be installed outdoors, and the air inlet and outlet of the indoor unit are connected to the indoors through pipes so that indoor air can circulate and exchange heat with the heat exchanger of the indoor unit, and this is not limited.

[0038] As Figure 1 and Figure 2 shown, the integrated indoor and outdoor air conditioner unit 100 includes a housing 10, an outdoor heat exchanger 20, an indoor heat exchanger 30, and a first fan 40. The housing 10 includes a first chamber 11 and a second chamber 12 which are separated, and the housing 10 further includes a first air inlet 111 and a first air outlet 112 that communicate with the first chamber 11.

[0039] Inside the housing 10, the outdoor heat exchanger 20 is located in the second chamber 12 to serve as an outdoor unit component. The indoor heat exchanger 30 is located in the first chamber 11 to serve as an indoor unit component.

[0040] The first chamber 11 and the second chamber 12 are isolated from each other for installing indoor unit components and outdoor unit components, and the isolated first chamber 11 and second chamber 12 can prevent the heat exchange air on the indoor unit side and the outdoor unit side from mixing and interfering with each other. Among them, the first chamber 11 and the second chamber 12 can be distributed in sequence in the up-down direction, such as the second chamber 12 is located above the first chamber 11. Alternatively, the first chamber 11 and the second chamber 12 can also be distributed in sequence in the horizontal plane, such as the first chamber 11 and the second chamber 12 are distributed in sequence in the left-right direction or the front-back direction, and this is not limited.

[0041] The first fan 40 is located in the first chamber 11 to drive air to flow through the first air inlet 111, the indoor heat exchanger 30, and the first air outlet 112 in sequence, for circulating and exchanging heat between indoor air and the indoor heat exchanger 30.

[0042] Correspondingly, the integrated indoor and outdoor air conditioner unit 100 further includes a second fan, and the second fan is located in the second chamber 12 to drive air to flow through the outdoor heat exchanger 20.

[0043] Among them, the first fan 40 and the second fan can be at least one of an axial flow fan, a centrifugal fan, and an inclined flow fan, and can be flexibly selected according to the requirements of wind pressure, air volume, and noise at the indoor heat exchanger 30 and the outdoor heat exchanger 20, and this is not limited.

[0044] In addition, an embodiment of the present application further provides an air conditioner, including any one of the integrated indoor and outdoor air conditioner units 100. The air conditioner may include components such as a compressor, a reversing valve, and a throttling device. One end of the indoor heat exchanger 30 is communicated with one end of the outdoor heat exchanger 20 through the throttling device, and the other end of the indoor heat exchanger 30 and the other end of the outdoor heat exchanger 20 are communicated with the compressor through the reversing valve. The air conditioner including the integrated indoor and outdoor air conditioner unit 100 can switch between a heating condition and a cooling condition, so as to heat or cool the indoor air through the indoor heat exchanger 30 and the first blower 40. When the air conditioner is in the heating condition, the indoor heat exchanger 30 is a condenser and the outdoor heat exchanger 20 is an evaporator.

[0045] Referring to Figure 1 and Figure 2 , the casing 10 further includes a defrosting air duct 13, and the outer side wall of the defrosting air duct 13 is adjacent to or in contact with the outdoor heat exchanger 20. The defrosting air duct 13 includes a second air inlet 131 and a second air outlet 132 communicated with the first chamber 11, so that the first blower 40 can drive a part of the air flowing through the indoor heat exchanger 30 to flow reciprocally between the first chamber 11 and the defrosting air duct 13.

[0046] Wherein, the reciprocating flow means that a part of the air flowing through the indoor heat exchanger 30 can flow into the defrosting air duct 13 through the second air inlet 131 under the drive of the first blower 40, and the air flowing into the defrosting air duct 13 can also flow into the first chamber 11 through the second air outlet 132, so as to realize the reciprocating flow of this part of the air between the first chamber 11 and the defrosting air duct 13.

[0047] Thus, when the indoor heat exchanger 30 is a condenser and the outdoor heat exchanger 20 is an evaporator, so that the integrated indoor and outdoor air conditioner unit 100 is in the heating condition. The first blower 40 can drive the air to flow through the first air inlet 111, the indoor heat exchanger 30 and the first air outlet 112 in sequence. Since the refrigerant in the heating condition liquefies and releases heat in the indoor heat exchanger 30, the air flowing through the indoor heat exchanger 30 can be heated. Driven by the first blower 40, a part of the hot air flowing through the indoor heat exchanger 30 can flow into the defrosting air duct 13 through the second air inlet 131, so as to heat the defrosting air duct 13, and the hot air flowing into the defrosting air duct 13 can also flow back to the first chamber 11 through the second air outlet 132, so that this part of the hot air can flow reciprocally between the first chamber 11 and the defrosting air duct 13.

[0048] Since the outer side wall of the defrosting air duct 13 is adjacent to or in contact with the outdoor heat exchanger 20, the hot air flowing through the defrosting air duct 13 can radiate or transfer heat to the adjacent outdoor heat exchanger 20 through the side wall of the defrosting air duct 13 while heating the defrosting air duct 13, so as to improve the gasification heat absorption efficiency of the refrigerant in the outdoor heat exchanger 20.

[0049] That is, in the heating condition, the indoor heat exchanger 30 can transfer heat to the outdoor heat exchanger 20 through the defrosting air duct 13, so as to slow down or avoid the situation that the surface temperature of the outdoor heat exchanger 20 is too low, which is beneficial to increasing the frosting cycle of the outdoor heat exchanger 20. Moreover, even if the surface of the outdoor heat exchanger 20 has frosted, through the indoor heat exchanger 30 and the defrosting air duct 13, the outdoor heat exchanger 20 can also be heated for defrosting without switching to the defrosting condition (i.e., the refrigeration condition) for defrosting. This can not only avoid the leakage or blowing out of cold air from the first air outlet 112, but also heat the indoor air while defrosting the outdoor heat exchanger 20, so that users can have a better experience in the heating condition.

[0050] Since there is no need to heat and defrost the outdoor heat exchanger 20 through the defrosting air duct 13 under the refrigeration condition. As Figure 3 and Figure 4 shown, the integrated indoor and outdoor air conditioner unit 100 further includes a damper assembly 50, and the damper assembly 50 is installed at at least one of the second air inlet 131 and the second air outlet 132 to open or close the defrosting air duct 13 (refer to Figure 2 ). That is, when the damper assembly 50 is opened, the defrosting air duct 13 is opened. When the damper assembly 50 is closed, the defrosting air duct 13 is closed.

[0051] Exemplarily, the damper assembly 50 can be installed at the second air inlet 131 to control the opening or closing of the second air inlet 131 through the damper assembly 50, so as to open or close the defrosting air duct 13, and the structure is simple.

[0052] The damper assembly 50 can also be installed at the second air outlet 132. By controlling the opening or closing of the second air outlet 132 through the damper assembly 50, the defrosting air duct 13 can also be opened or closed, and the structure is simple.

[0053] Or, the damper assembly 50 can also be installed at both the second air inlet 131 and the second air outlet 132 at the same time, so as to control the second air inlet 131 and the second air outlet 132 to be in the open state or the closed state through the damper assembly 50, thereby opening or closing the defrosting air duct 13 and making the defrosting air duct 13 have a better sealing effect.

[0054] That is, through the setting of the damper assembly 50, the opening state and the closing state of the defrosting air duct 13 can be controlled. In this way, in the heating condition, if the surface of the outdoor heat exchanger 20 has a relatively low temperature, the damper assembly 50 can be controlled to open the defrosting air duct 13, so that part of the heat of the indoor heat exchanger 30 can be guided to the outdoor heat exchanger 20 through the defrosting air duct 13, thereby heating the outdoor heat exchanger 20 in the heating condition to defrost the outdoor heat exchanger 20 or extend the frosting cycle of the outdoor heat exchanger 20.

[0055] In the heating condition, if it is not necessary to heat the outdoor heat exchanger 20, the air door assembly 50 can be controlled to close the defrosting air duct 13, so that more air flowing through the indoor heat exchanger 30 flows out through the first air outlet 112 to heat the indoor air, with higher heating efficiency.

[0056] In the cooling condition, the air door assembly 50 can also be controlled to close the defrosting air duct 13, so that more air flowing through the indoor heat exchanger 30 flows out through the first air outlet 112 to cool the indoor air, with higher cooling efficiency.

[0057] Exemplarily, such as Figure 3 and Figure 4 As shown, the air door assembly 50 includes at least two first louver plates 51 installed at the second air inlet 131. Along the air flow direction, the at least two first louver plates 51 are sequentially distributed and rotatably installed at the second air inlet 131 to open or close the second air inlet 131.

[0058] When the first louver plate 51 rotates to the first preset position to block the second air inlet 131 and is in the closed state, the air door assembly 50 is closed, and the corresponding defrosting air duct 13 is closed. At this time, the first preset position of each first louver plate 51 is approximately parallel to the opening plane of the second air inlet 131 to block the second air inlet 131.

[0059] Correspondingly, when the first louver plate 51 rotates to the second preset position to open the second air inlet 131 and is in the open state, the air door assembly 50 is open, and at this time the defrosting air duct 13 is open. That is, each first louver plate 51 rotates a preset angle from the first preset position to Figure 4 the second preset position shown. At this time, the included angle between each first louver plate 51 and the opening plane of the second air inlet 131 is the preset angle, and the opening direction is set towards the first blower 40, and the defrosting air duct 13 is opened.

[0060] By rotatably installing a plurality of first louver plates 51 at the second air inlet 131 to control the second air inlet 131 to be in the open state or the closed state by adjusting the rotation angles of the plurality of first louver plates 51, it is possible to avoid occupying too much extra space in the plane where the second air inlet 131 is located. And, since the plurality of first louver plates 51 are sequentially distributed along the air flow direction, the depth dimension of each first louver plate 51 inserted into the first chamber 11 when rotated to the open state is small, that is, it has a small occupied space in the space perpendicular to the second air inlet 131, which is beneficial to the compact design of the equipment. The plurality means two or more than two.

[0061] Correspondingly, such as Figure 4As shown, the air damper assembly 50 further includes at least two second louver plates 52 installed at the second air outlet 132. The at least two second louver plates 52 are sequentially distributed and rotatably installed at the opening of the second air outlet 132 to open or close the second air outlet 132.

[0062] By rotatably installing a plurality of second louver plates 52 at the second air outlet 132 to control the second air outlet 132 to be in an open state or a closed state by adjusting the rotation angles of the plurality of second louver plates 52, it is possible to avoid occupying too much extra space in the plane where the second air outlet 132 is located. Moreover, since the plurality of second louver plates 52 are sequentially distributed, the depth dimension of each second louver plate 52 inserted into the first chamber 11 when rotated to the open state is small, that is, it has a small occupied space in the space perpendicular to the second air outlet 132, which is beneficial to the compact design of the device.

[0063] Alternatively, the air damper assembly 50 may also include a first air damper and a second air damper. Among them, the first air damper is installed at the second air inlet 131 to control the second air inlet 131 to be in an open or closed state by sliding or rotating. The second air damper is installed at the second air outlet 132 to control the second air outlet 132 to be in an open or closed state by sliding or rotating, and the structure is simple.

[0064] As Figure 3 and Figure 4 shown, along the air flow direction, the second air inlet 131 is located between the first fan 40 and the first air outlet 112, so that part of the air blown out by the first fan 40 can flow into the defrosting air duct 13 through the second air inlet 131, and another part of the air can be blown out of the first chamber through the first air outlet 112. In order to make more of the air blown out by the first fan 40 enter the defrosting air duct 13 through the second air inlet 131 during the process of flowing toward the first air outlet 112.

[0065] Taking Figure 4 the shown perspective as an example, the first louver plate 51 rotates counterclockwise by 30 - 60° (preset angle) from the closed state to the shown open position, so that part of the air blown by the first fan 40 toward the first air outlet 112 can be diverted by the inclined first louver plate 51 into the defrosting air duct 13 (as Figure 2 shown).

[0066] Referring to Figure 4 , when the plurality of first louver plates 51 are in the open state, the dimension of the first louver plate 51 rotated into the first chamber 11 along the direction perpendicular to the second air inlet 131 (such as the up and down direction) is defined as the depth dimension d. Thus, along the air flow direction from the first fan 40 to the first air outlet 112, the depth dimension d of the first louver plate 51 increases in sequence.

[0067] Since multiple first louver plates 51 are sequentially distributed along the air flow direction and rotatably installed at the second air inlet 131, taking the dimension along the air flow direction of the first louver plate 51 in the closed state as the width dimension as an example. Along the air flow direction from the first blower 40 to the first air outlet 112, the width dimensions of the multiple first louver plates 51 are sequentially increased, so that the depth dimensions of the first louver plates 51 inserted into the first chamber 11 when rotated to the open state are sequentially increased.

[0068] In this way, when the second air inlet 131 is in the open state, since the depth dimension of the first louver plate 51 closer to the first air outlet 112 is larger, that is, the depth dimension of the first louver plate 51 inserted into the first chamber 11 gradually increases along with the air flow direction, the upstream first louver plate 51 can reduce the shielding of the downstream first louver plate 51, so that the downstream first louver plate 51 also has a good air flow introduction effect.

[0069] In some embodiments of the present application, along the air flow direction, the second air outlet 132 in the first chamber 11 is located upstream of the first blower 40. After the first blower 40 operates, a negative pressure area will be formed upstream. By setting the second air outlet 132 close to the upstream negative pressure area of the first blower 40, a pressure difference is generated between the second air inlet 131 and the second air outlet 132 of the defrosting air duct 13, and the second air outlet 132 is a negative pressure area, so that the air in the defrosting air duct 13 can flow from the second air inlet 131 to the second air outlet 132 and heat the side wall of the defrosting air duct 13.

[0070] In addition, since the first louver plate 51 at the second air inlet 131 forms an angle with the outgoing air flow after being opened, part of the air blown out by the first blower 40 enters the defrosting air duct 13. Since the faster the gas flow rate, the lower the pressure, and the slower the gas flow rate, the higher the pressure. During the process of the air flowing from the first blower 40 to the first air outlet 112, due to the obstruction of the multiple first louver plates 51, the air flow rate at the second air inlet 131 is relatively low and the air pressure is relatively high. At the second air outlet 132, the air in the defrosting air duct 13 can be smoothly sucked in by the first blower 40 and has a relatively fast flow rate, so that the air pressure at the second air outlet 132 of the defrosting air duct 13 is relatively low. The air flow of the blower operation is sucked into the blower, and since there is no obstruction of any louver-shaped sealing plate blades, the gas flow rate is relatively fast and the air pressure is low. So that the air can flow smoothly in the defrosting air duct 13 from the second air inlet 131 to the second air outlet 132, and the air can heat the side wall of the defrosting air duct 13.

[0071] Due to the principle that hot air rises and cold air descends, the second chamber 12 can be arranged above the first chamber 11, so that the hot air in the first chamber 11 and the defrosting air duct 13 can have a better heating effect on the upper second chamber 12 under the heating condition, thereby slowing down the frosting process of the indoor heat exchanger 30 in the second chamber 12.

[0072] Alternatively, the first chamber 11, the defrosting air duct 13, and the second chamber 12 can also be arranged in sequence from bottom to top. For example, there is a sandwich layer between the first chamber 11 and the second chamber 12 of the housing 10, and a part of the sandwich layer is hollow to form the defrosting air duct 13 communicating with the first chamber 11. Above the upper side wall of the defrosting air duct 13 is the second chamber 12, so that the hot air can have a better heating effect on the second chamber 12 through the upper side wall of the defrosting air duct 13. Moreover, due to the principle that hot air rises and cold air sinks, the cold air below the second chamber 12 can be heated to improve the uniformity of the overall temperature distribution in the second chamber 12.

[0073] Exemplarily, in the second chamber 12, the outdoor heat exchanger 20 is located above the defrosting air duct 13 and is in contact with the upper side wall of the defrosting air duct 13. Under the heating condition, the hot air in the defrosting air duct 13 can be in contact with the outdoor heat exchanger 20 through the upper side wall and perform heat exchange, having a high heat exchange efficiency. At the same time, the part of the upper side wall that is not in contact with the outdoor heat exchanger 20 can heat the nearby air, so that the heated air rises and exchanges heat with the upper part area of the outdoor heat exchanger 20, which is beneficial to improving the uniformity of the overall temperature distribution of the outdoor heat exchanger 20, thereby avoiding or slowing down the occurrence of local low-temperature frosting on the surface of the outdoor heat exchanger 20.

[0074] In some embodiments of the present application, as Figure 5 shown, the integrated indoor and outdoor air conditioner unit 100 further includes a controller 60, a first temperature sensor 71, and a second temperature sensor 72. The controller 60 is electrically connected to the first temperature sensor 71, the second temperature sensor 72, and the air door assembly 50. The controller 60 is used to control the air door assembly 50 to open or close the defrosting air duct 13 according to the difference between the first temperature parameter and the second temperature parameter (as Figure 2 shown).

[0075] The first temperature sensor 71 is used to detect the ambient temperature and obtain the first temperature parameter T1. For example, the first temperature sensor 71 is arranged outside the housing 10 of the second chamber 12. Alternatively, the first temperature sensor 71 is located on the air inlet side of the outdoor heat exchanger 20 and is arranged at an interval from the outdoor heat exchanger.

[0076] The second temperature sensor 72 is used to detect the temperature of the outdoor heat exchanger 20 and obtain the second temperature parameter T2. For example, the second temperature sensor 72 is arranged in contact with the outdoor heat exchanger 20. Alternatively, the second temperature sensor 72 is arranged on the air outlet side of the outdoor heat exchanger 20 and close to the outdoor heat exchanger 20.

[0077] Through the settings of the controller 60, the first temperature sensor 71 and the second temperature sensor 72, the ambient temperature and the temperature of the outdoor heat exchanger 20 are detected. For example, in the refrigeration condition, the controller controls the damper assembly 50 to close the defrosting air duct 13, so that the indoor heat exchanger 30 has a higher heat exchange efficiency under the refrigeration condition. In the heating condition, if the ambient temperature (external environment) is high or the temperature of the outdoor heat exchanger 20 is higher than the dew point temperature, the controller 60 also controls the damper assembly 50 to close the defrosting air duct 13, so that the indoor heat exchanger 30 has a higher heat exchange efficiency under the heating condition.

[0078] If the ambient temperature is low or the temperature of the outdoor heat exchanger is lower than the dew point temperature, the controller 60 can control the damper assembly 50 to open the defrosting air duct 13, so that the indoor heat exchanger 30 under the heating condition can heat the outdoor heat exchanger 20 through the defrosting air duct 13, thereby delaying or avoiding the frosting time of the outdoor heat exchanger 20. Alternatively, at this time, the already frosted outdoor heat exchanger 20 can also be heated for defrosting.

[0079] In this way, through the settings of the controller 60, the first temperature sensor 71 and the second temperature sensor 72, the opening and closing states of the defrosting air duct 13 can be flexibly adjusted as needed, so that the whole machine maintains a high refrigeration and heating efficiency.

[0080] Taking the damper assembly 50 as an example that at least includes a plurality of first louvers 51, the damper assembly 50 can drive the plurality of first louvers 51 to switch and rotate between the closed state and the open state through the first motor. At this time, the controller 60 is electrically connected to the first motor to control the second air inlet 131 to be in the closed state or the open state.

[0081] Correspondingly, the plurality of second louvers 52 can also be driven by the second motor to switch and rotate between the closed state and the open state to control the second air outlet 132 to be in the closed state or the open state. At this time, the controller 60 is electrically connected to the second motor to control the second air outlet 132 to be in the closed state or the open state.

[0082] Among them, the damper assembly 50 can be set to be initially in the closed state. For example, during the start-up self-check process of the integrated indoor and outdoor air conditioner unit 100, the position state of the damper assembly 50 is detected, and the damper assembly 50 is maintained or switched to the initial state to close the defrosting air duct 13, and in case of need, the controller 60 controls the damper assembly 50 to open the defrosting air duct 13.

[0083] Exemplarily, define the difference between the first temperature parameter T1 and the second temperature parameter T2 as T1 - T2. Since the refrigerant in the outdoor heat exchanger 20 under the heating condition vaporizes and absorbs heat, the temperature of the outdoor heat exchanger 20 will not be higher than the ambient temperature, that is, T1 - T2 > 0°C.

[0084] Based on this, under the heating condition, when the difference between the first temperature parameter T1 and the second temperature parameter T2 is greater than or equal to the first preset temperature T3, and the second temperature parameter T2 is less than 0°C, the controller 60 controls the air door assembly 50 to open the defrosting air duct 13. At this time, it is the first anti-frost mode.

[0085] For example, the first preset temperature T3 can be 2°C, 3°C or 4°C, that is, 2°C ≤ T3 < 5°C. Since the temperature of the outdoor heat exchanger 20 under the heating condition is lower than 0°C and the temperature difference between the ambient temperature and the outdoor heat exchanger 20 is greater than or equal to the first preset temperature T3, the surface temperature of the outdoor heat exchanger 20 is lower than the dew point temperature, resulting in frosting and icing. By controlling the air door assembly 50 to open the defrosting air duct 13 through the controller 60, part of the air heated by the indoor heat exchanger 30 can pass through the defrosting air duct 13 to heat the outdoor heat exchanger 20 in the second chamber 12, thereby avoiding the situation of frosting and icing on the outdoor heat exchanger 20, or delaying the frosting or icing time of the outdoor heat exchanger 20. Even if the outdoor heat exchanger 20 has frosted or iced, by opening the defrosting air duct 13 under the heating condition, the outdoor heat exchanger 20 in the second chamber 12 can also be heated to achieve the defrosting and deicing effect.

[0086] In the above process, the indoor unit side can maintain a stable heating effect, that is, the first blower 40 can drive part of the heated air to be discharged through the first air outlet 112 to continuously heat the indoor air, providing a good user experience.

[0087] Correspondingly, under the heating condition, when the difference between the first temperature parameter T1 and the second temperature parameter T2 is less than the first preset temperature T3, it means that the outdoor heat exchanger 20 can exchange heat with the outdoor air sufficiently, that is, the temperature difference between the outdoor heat exchanger 20 and the ambient temperature is small and will not be lower than the dew point temperature and frost or ice on the surface. Or when the second temperature parameter T2 is greater than or equal to 0°C, that is, the surface temperature of the outdoor heat exchanger 20 is greater than 0°C.

[0088] In this way, even if there is a large temperature difference between the outdoor heat exchanger 20 and the ambient temperature, only condensation will occur on the surface of the outdoor heat exchanger 20 and there will be no frosting or icing. In this way, there is no need to open the defrosting air duct 13 under the heating condition, enabling the indoor heat exchanger 30 to maintain a high heating efficiency. Therefore, the controller 60 controls the air door assembly 50 to switch to the initial state to close the defrosting air duct. At this time, it is the initial heating mode.

[0089] After the defrosting air duct 13 is opened, according to different temperature states at the outdoor heat exchanger 20, the operating conditions of the integrated indoor and outdoor air conditioner unit 100 can be correspondingly adjusted to keep the integrated indoor and outdoor air conditioner unit 100 with a stable heating effect.

[0090] As Figure 3 and Figure 4 shown, the integrated indoor and outdoor air conditioner unit 100 further includes an electric heater 73, and the electric heater 73 is an auxiliary heater of the air conditioning equipment. The electric heater 73 is located in the first chamber 11 and is arranged upstream of the second air inlet 131 along the air flow direction, so that the air heated by the electric heater can partially flow through the first air outlet 112 and can also partially flow through the second air inlet 131. Refer to Figure 5 , the controller 60 is electrically connected to the electric heater 73.

[0091] Under the heating condition, when the difference between the first temperature parameter T1 and the second temperature parameter T2 is greater than or equal to the second preset temperature T4, the second preset temperature T4 is greater than the first preset temperature T3, and the second temperature parameter T2 is less than 0°C, the controller 60 controls the air door assembly 50 to open the defrosting air duct 13, and the controller 60 controls the electric heater 73 to be in the on state. At this time, it is the second anti-frosting mode.

[0092] If the second preset temperature T4 is 5°C ≤ T4 < 9°C, the second preset temperature T4 can be set to 5°C, 6°C, 7°C or 8°C. Since the temperature difference between the outdoor heat exchanger 20 and the ambient temperature further increases at this time, while opening the defrosting air duct 13, the electric heater 73 is controlled to start, so that the air flowing through the first chamber 11 has a higher temperature. That is, the air in the first chamber 11 can flow through the indoor heat exchanger 30 and the electric heater 73 in sequence and be heated and raised in temperature. While improving the heating effect on the indoor air, the air flowing back and forth in the first chamber 11 and the defrosting air duct 13 has a higher temperature, so as to transfer more heat to the second chamber 12 and the outdoor heat exchanger 20, thereby avoiding the outdoor heat exchanger 20 from frosting or icing, or delaying the frosting or icing time of the outdoor heat exchanger 20. Even if the outdoor heat exchanger 20 has frosted or iced, by simultaneously opening the defrosting air duct 13 and the electric heater 73 under the heating condition, the outdoor heat exchanger 20 in the second chamber 12 can also be heated to achieve the defrosting and de-icing effect.

[0093] In the above process, the indoor unit side can improve the heating effect, that is, the first fan 40 can drive part of the heated air to be discharged through the first air outlet 112 to continuously heat the indoor air, and has a good user experience.

[0094] It should be noted that in the above-mentioned working conditions, the outdoor heat exchanger 20 is very likely to have frozen or is about to freeze, so that the heat exchange efficiency at the outdoor heat exchanger 20 is reduced, and correspondingly, the indoor heat exchanger 30 also has a relatively low heating efficiency. At this time, by turning on the electric heater 73 to supplement the heating of the air in the first chamber 11, while ensuring a high heating effect on the indoor air, more heat can be provided to the outdoor heat exchanger 20 through the defrosting air duct 13.

[0095] However, if the temperature of the outdoor heat exchanger 20 continues to drop in the above-mentioned working conditions, it is necessary to improve the heating effect on the outdoor heat exchanger 20.

[0096] That is, in the heating working condition, when the difference between the first temperature parameter T1 and the second temperature parameter T2 is greater than or equal to the third preset temperature T5, the third preset temperature T5 is greater than the second preset temperature T4, and the second temperature parameter T2 is less than 0 °C. The controller 60 controls the defrosting air duct 13 and the electric heater 73 to remain in the on state, and the controller 60 controls the integrated indoor and outdoor air conditioner unit 100 to switch to the air supply working condition, and this is the defrosting mode at this time.

[0097] As Figure 5 shown, the controller 60 is electrically connected to the first blower 40. The controller 60 can also be set to be electrically connected to the compressor and the throttling device to facilitate switching the operating conditions of the integrated indoor and outdoor air conditioner unit 100.

[0098] If the third preset temperature T5 is set to 9 °C ≤ T5 < 11 °C, the third preset temperature T5 can be set to 10 °C. Since the temperature difference between the outdoor heat exchanger 20 and the ambient temperature further increases at this time, and there is frost attached to the surface of the outdoor heat exchanger 20, the heat exchange effect of the outdoor heat exchanger 20 and the heating effect of the indoor heat exchanger 30 will be significantly reduced. While keeping the defrosting air duct 13 and the electric heater 73 in the on state, the integrated indoor and outdoor air conditioner unit 100 is switched to the air supply working condition, that is, the compressor stops running and the first blower 40 rotates.

[0099] In the air supply working condition, the closed compressor prevents the refrigerant from continuing to circulate between the indoor heat exchanger 30 and the outdoor heat exchanger 20, thus avoiding the situation where the outdoor heat exchanger 20 continues to absorb heat through the vaporization of the refrigerant and causing the frosting to intensify. At the same time, the continuously operating first blower 40, electric heater 73 and defrosting air duct 13 can continue to heat the air flowing through the first chamber 11, so that the heated air can continue to flow through the defrosting air duct 13 to heat the outdoor heat exchanger 20 and heat the indoor space. Since there is no cold source at the outdoor heat exchanger 20, the frost on the surface of the outdoor heat exchanger 20 can be quickly heated and melted to save the defrosting time and continuously output hot air to the indoor.

[0100] In some embodiments of the present application, asFigure 2 As shown, the first chamber 11 includes a windward chamber 113 and a blower chamber 114. The indoor heat exchanger 30 is disposed in the first chamber 11 to divide the first chamber 11 into the windward chamber 113 and the blower chamber 114. Refer to Figure 6 and Figure 7 , the housing 10 is provided with a first air inlet 111 on the side wall of the windward chamber 113, and the housing 10 is provided with a first air outlet 112 on the side wall of the blower chamber 114. A first blower 40 is installed in the blower chamber 114 so that the first blower 40 can drive air to flow through the first air inlet 111, the windward chamber 113, the indoor heat exchanger 30 and the blower chamber 114 in sequence, and be discharged from the first air outlet 112, so as to blow the heat-exchanged air to the room through the first air outlet 112.

[0101] Exemplarily, as Figure 6 and Figure 7 shown, the first blower 40 can be a centrifugal blower, which has the advantages of small volume and large air supply. In the blower chamber 114, the air outlet of the first blower 40 is arranged towards the first air outlet 112, and a air supply channel 115 isolated from the blower chamber 114 is also provided between the air outlet of the first blower 40 and the first air outlet 112. That is, one end of the air supply channel 115 is communicated with the air outlet of the first blower 40, and the other end of the air supply channel 115 is communicated with the first air outlet 112. To avoid the convection between the air blown out by the first blower 40 and the air flowing into the blower chamber 114 through the indoor heat exchanger 30.

[0102] Among them, since the first chamber 11 and the second chamber 12 are distributed in the up-down direction, the second air inlet 131 is opened on the upper side wall of the air supply channel 115, so that when a plurality of first louver plates 51 are rotated to the open position, the upper part of the air blown out by the first blower 40 flows into the defrosting air duct 13 through the first louver plates 51 and the second air inlet 131, so as to heat the side wall of the defrosting air duct 13 and heat the second chamber 12 and the outdoor heat exchanger 20 above the defrosting air duct 13, that is, the first anti-frost mode.

[0103] Correspondingly, the electric heater 73 can be disposed in the air supply channel 115, and the electric heater 73 is located between the first blower 40 and the second air inlet 131 along the air flow direction, so that a part of the air heated by the electric heater 73 can flow into the defrosting air duct 13 through the second air inlet 131, that is, the second anti-frost mode or the defrosting mode.

[0104] Taking the first blower 40 as a centrifugal blower as an example, the air outlet of the first blower 40 is arranged towards the first air outlet 112, and the first blower 40 has two air inlets along the axial direction. One of the air inlets is arranged towards the indoor heat exchanger 30, and there is a second air outlet 132 above the other air inlet. That is, in the first chamber 11, the second air outlet 132 is arranged upstream of the first blower 40 along the air flow direction, or the second air outlet 132 can be arranged between the indoor heat exchanger 30 and the first blower 40 along the air flow direction. So that the first blower 40 can synchronously drive the hot air in the defrosting air duct 13 to flow into the first chamber 11 through the second air outlet 132.

[0105] In some embodiments of the present application, the housing 10 is provided with a sandwich layer between the first chamber 11 and the second chamber 12. As Figure 8 shown, the housing 10 further includes a first partition 14. The first partition 14 is located between the first chamber 11 and the second chamber 12 to separate the first chamber 11 and the second chamber 12, and the side wall of the defrosting air duct 13 includes part of the first partition 14.

[0106] Taking the second chamber 12 being located above the first chamber 11 as an example, referring to Figure 8 and Figure 9 , part of the first partition 14 serves as the side wall of the defrosting air duct 13 to enclose the defrosting air duct 13, and this part of the first partition 14 is the upper side wall of the defrosting air duct 13. That is, heat transfer between the defrosting air duct 13 and the second chamber 12 is carried out through the first partition 14.

[0107] While separating the first chamber 11 and the second chamber 12, the first partition 14 also serves as part of the side wall of the defrosting air duct 13, with a compact structure and conducive to reducing the heat transfer path between the defrosting air duct 13 and the second chamber 12, so as to improve the heating and defrosting efficiency of the outdoor heat exchanger 20.

[0108] Based on this, by adjusting the extending direction of the defrosting air duct 13, the extending direction of the defrosting air duct 13 is made to be consistent with the extending direction of the outdoor heat exchanger 20 in the second chamber 12. For example, the vertical projection of the outdoor heat exchanger 20 at the first partition 14 overlaps with the vertical projection of the defrosting air duct 13 at the first partition 14. So that the hot air in the defrosting air duct 13 can better heat the outdoor heat exchanger 20 to prevent frosting on the surface of the outdoor heat exchanger 20 or heat and melt the frost on the surface.

[0109] In some embodiments of the present application, as Figure 8 and Figure 10As shown, the outdoor heat exchanger 20 is disposed within the second chamber 12 and is in contact with the first partition 14 at the sidewall of the defrost air duct 13. This enables the hot air within the defrost air duct 13 to directly pass through the first partition 14 as a sidewall and conduct heat to the outdoor heat exchanger 20 above, thereby improving the heat conduction efficiency between the defrost air duct 13 and the outdoor heat exchanger 20.

[0110] Among them, as Figure 9 and Figure 10 shown, in a cross-section perpendicular to the extending direction of the defrost air duct 13, the cross-sectional shape of the defrost air duct 13 includes an inner arc surface. Since the first partition 14 is a planar structure and serves as a part of the sidewall of the defrost air duct 13, the other part of the sidewall of the defrost air duct 13 can be set as an arc surface structure, that is, it shows an arc structure such as an elliptical arc or a circular arc in the cross-sectional shape. While increasing the inner wall area of the defrost air duct 13, the arc surface structure is conducive to reducing air resistance, enabling the hot air to flow smoothly within the defrost air duct 13 and generating less noise.

[0111] Among them, the larger inner wall area of the defrost air duct 13 is conducive to improving the heat exchange efficiency between the hot air and the sidewall of the defrost air duct 13. The sidewall of the defrost air duct 13 can be a thin metal plate structure, or can be made of other alloys or polymer materials with good heat conduction efficiency, so as to have a high heat exchange efficiency between the defrost air duct 13 and the outdoor heat exchanger 20.

[0112] In some embodiments of the present application, as Figure 8 shown, the housing 10 further includes a second partition 15. The second partition 15 is located on the side of the first partition 14 facing the first chamber 11, and the first partition 14 and the second partition 15 are spaced apart to form a sandwich structure and separate the first chamber 11 and the second chamber 12. Between the first partition 14 and the second partition 15, it can be a hollow structure to isolate the heat transfer between the first chamber 11 and the second chamber 12 through air. It can also be filled with foaming materials or heat insulation materials between the first partition 14 and the second partition 15. While isolating the heat transfer between the first chamber 11 and the second chamber 12, it can prevent the noise of moving components such as the compressor and the second blower within the second chamber 12 from being transmitted to the first chamber 11.

[0113] Among them, the defrost air duct 13 is disposed between the first partition 14 and the second partition 15. For example, the main structure of the defrost air duct 13 is disposed close to the first partition 14, and part of the first partition 14 serves as the sidewall structure of the defrost air duct 13 to improve the heat exchange efficiency between the hot air in the defrost air duct 13 and the outdoor heat exchanger 20.

[0114] Correspondingly, the defrost air duct 13 is disposed close to the second partition plate 15 at both ends, so that a second air inlet 131 and a second air outlet 132 are formed on the second partition plate 15 to communicate the first chamber 11 and the defrost air duct 13.

[0115] Wherein, at the second air inlet 131, an avoidance notch also needs to be correspondingly provided at the air supply channel 115 for the second air inlet 131, so that the hot air heated by the electric heater 73 in the air supply channel 115 can flow into the defrost air duct 13 through the avoidance notch and the second air inlet 131 to heat the outdoor heat exchanger 20.

[0116] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an" and "the" as used herein may also include the plural. The terms "comprising", "including", "containing" and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0117] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein. Thus, the first element, component, region, layer or section discussed below may be referred to as the second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0118] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. An integrated indoor and outdoor air conditioner unit, characterized in that, Comprising: A casing (10), the casing (10) includes a first chamber (11) and a second chamber (12) which are separated, as well as a first air inlet (111) and a first air outlet (112) that communicate with the first chamber (11); An outdoor heat exchanger (20), located within the second chamber (12); An indoor heat exchanger (30), located within the first chamber (11); And a first fan (40), the first fan (40) is located within the first chamber (11) to drive air to flow successively through the first air inlet (111), the indoor heat exchanger (30), and the first air outlet (112); Wherein, the casing (10) further includes a defrost air duct (13), an outer sidewall of the defrost air duct (13) is adjacent to or in contact with the outdoor heat exchanger (20); the defrost air duct (13) includes a second air inlet (131) and a second air outlet (132) that communicate with the first chamber (11), so that a part of the air driven by the first fan (40) flowing through the indoor heat exchanger (30) flows reciprocally within the first chamber (11) and the defrost air duct (13).

2. The integrated indoor and outdoor air conditioner unit according to claim 1, characterized in that, The integrated indoor and outdoor air conditioner unit further includes: A damper assembly (50), the damper assembly (50) is installed at at least one of the second air inlet (131) and the second air outlet (132); when the damper assembly (50) is opened, the defrost air duct (13) is opened; when the damper assembly (50) is closed, the defrost air duct (13) is closed.

3. The integrated indoor and outdoor air conditioner unit according to claim 2, wherein The damper assembly (50) includes: At least two first louver plates (51) installed at the second air inlet (131); Along the air flow direction, at least two of the first louver plates (51) are successively distributed and rotatably installed at an opening of the second air inlet (131). When the first louver plate (51) rotates to a first preset position to block the second air inlet (131) and is in a closed state, the damper assembly (50) is closed; when the first louver plate (51) rotates to a second preset position to open the second air inlet (131) and is in an open state, the damper assembly (50) is opened.

4. The integrated indoor and outdoor air conditioner unit according to claim 3, characterized in that Along the air flow direction, the second air inlet (131) within the first chamber (11) is located between the first fan (40) and the first air outlet (112); When multiple first louver plates (51) are in an open state, the first louver plates (51) rotate in a direction perpendicular to the second air inlet (131) to a depth dimension of the first chamber (11). Along the air flow direction, from the first fan (40) pointing to the first air outlet (112), the depth dimensions of the first louver plates (51) increase successively.

5. The integrated indoor and outdoor air conditioner unit according to claim 2, wherein, The air damper assembly (50) includes at least two second louver blades (52) installed at the second air outlet (132). The at least two second louver blades (52) are sequentially distributed and rotatably installed at the opening of the second air outlet (132) to open or close the second air outlet (132).

6. The integrated indoor and outdoor air conditioner unit according to claim 2, characterized in that, The integrated indoor and outdoor air conditioner unit further includes: A first temperature sensor (71) for detecting the ambient temperature and obtaining a first temperature parameter; A second temperature sensor (72) for detecting the temperature of the outdoor heat exchanger (20) and obtaining a second temperature parameter; And a controller (60). The controller (60) is electrically connected to the first temperature sensor (71), the second temperature sensor (72), and the air damper assembly (50). The controller (60) is configured to control the air damper assembly (50) to open or close the defrosting air duct (13) according to the first temperature parameter and the second temperature parameter.

7. The integrated indoor and outdoor air conditioner unit according to claim 6, characterized in that, Under the heating condition, when the difference between the first temperature parameter and the second temperature parameter is greater than or equal to a first preset temperature, and the second temperature parameter is less than 0°C, the controller (60) controls the air damper assembly (50) to open the defrosting air duct (13); Under the heating condition, when the difference between the first temperature parameter and the second temperature parameter is less than the first preset temperature, or when the second temperature parameter is greater than or equal to 0°C, the controller (60) controls the air damper assembly (50) to close the defrosting air duct (13).

8. The integrated indoor and outdoor air conditioner unit according to claim 6, characterized in that The integrated indoor and outdoor air conditioner unit further includes an electric heater (73). The electric heater (73) is located in the first chamber (11) and is disposed upstream of the second air inlet (131) along the air flow direction. The controller (60) is electrically connected to the electric heater (73); Under the heating condition, when the difference between the first temperature parameter and the second temperature parameter is greater than or equal to a second preset temperature, the second preset temperature is greater than the first preset temperature, and the second temperature parameter is less than 0°C, the controller (60) controls the air damper assembly (50) to open the defrosting air duct (13), and the controller (60) controls the electric heater (73) to be in an on state.

9. The integrated indoor and outdoor air conditioner unit according to claim 8, characterized in that, Under the heating condition, when the difference between the first temperature parameter and the second temperature parameter is greater than or equal to a third preset temperature, the third preset temperature is greater than the second preset temperature, and the second temperature parameter is less than 0°C, the controller (60) controls the defrosting air duct (13) and the electric heater (73) to remain in an open state, and the controller (60) controls the integrated indoor and outdoor air conditioner unit to switch to the air supply condition.

10. The integrated indoor and outdoor air conditioner unit according to any one of claims 1-9, characterized in that, The housing (10) further includes: A first partition plate (14). The first partition plate (14) is located between the first chamber (11) and the second chamber (12) to separate the first chamber (11) and the second chamber (12). The side wall of the defrosting air duct (13) includes a part of the first partition plate (14).

11. The integrated indoor and outdoor air conditioner unit according to claim 10, characterized in that, The outdoor heat exchanger (20) is disposed within the second chamber (12) and is in contact with the first partition (14) at the side wall of the defrost air duct (13); and / or, The second chamber (12) is located above the first chamber (11); and / or, The first chamber (11), the defrost air duct (13), and the outdoor heat exchanger (20) are distributed in sequence from bottom to top.

12. The integrated indoor and outdoor air conditioner unit according to claim 10, characterized in that, The vertical projection of the outdoor heat exchanger (20) at the first partition (14) overlaps with the vertical projection of the defrost air duct (13) at the first partition (14); and / or, in a cross-section perpendicular to the extending direction of the defrost air duct (13), the cross-sectional shape of the defrost air duct (13) includes an arc structure.

13. The integrated indoor and outdoor air conditioner unit according to any one of claims 1-9, characterized in that Within the first chamber (11), the second air inlet (131) is located between the first blower (40) and the first air outlet (112) along the air flow direction; and / or, Within the first chamber (11), the second air outlet (132) is disposed upstream of the first blower (40) along the air flow direction.

14. An air conditioner, characterized in that, Comprising an internal and external integrated air conditioner unit according to any one of claims 1-13.

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