air conditioner

Abstract

The present invention discloses an air conditioner, comprising: an indoor unit, provided with a first sensor for detecting indoor temperature; an outdoor unit; a fresh air housing; a fresh air blower; a heating element; a second sensor for detecting the temperature and humidity of outdoor air; and a controller configured to: when the air conditioner is in cooling mode; if the humidity value detected by the second sensor is greater than an upper humidity threshold, the heating element is controlled to be turned on; if the humidity value detected by the second sensor is not greater than a lower humidity threshold, the heating element is controlled to be turned off, and the lower humidity threshold is less than the upper humidity threshold; if the humidity value detected by the second sensor is not greater than the upper humidity threshold and greater than the lower humidity threshold, it is determined whether the difference between the temperature value detected by the second sensor and the temperature value detected by the first sensor is greater than the first temperature threshold, and if so, the heating element is controlled to be turned on, and if not, the heating element is controlled to remain turned off. The air conditioner according to the embodiment of the present invention can improve the comfort of outdoor fresh air, optimize the problem of fresh air condensation, and save energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner. Background Art

[0002] The air conditioner in the related art is usually equipped with a fresh air module. The fresh air shell of the fresh air module is provided with a fresh air outlet connected to the indoor room to guide the outdoor fresh air into the indoor room and adjust the proportion of indoor air. However, when the air conditioner is in cooling mode, the temperature difference between the indoor air and the outdoor air is large, or the humidity of the outdoor air is high, which can easily cause the fresh air to enter the room through the pipe, and the indoor air and the outdoor air to meet in the pipe, and condensation water is generated on the surface of the pipe. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an air conditioner that can improve the comfort of outdoor fresh air and optimize the problem of fresh air condensation.

[0004] In order to achieve the above-mentioned purpose, an air conditioner is proposed according to an embodiment of the present invention, comprising: an indoor unit provided with a first sensor for detecting indoor temperature; an outdoor unit, the outdoor unit comprising a fresh air module, the fresh air module comprising: a fresh air housing provided with a fresh air inlet and a fresh air outlet, the fresh air outlet being connected to the indoor unit; a fresh air fan installed in the fresh air housing; a heating element installed in the fresh air housing, through the operation of the fresh air fan, guiding outdoor air to enter the fresh air housing through the fresh air inlet, and forming a heated air flow through the heating element, and the heated air flow flows into the indoor unit through the fresh air outlet; a second sensor installed in the fresh air housing and closer to the fresh air inlet than the heating element, the second sensor being used to detect outdoor The temperature and humidity of the air; a controller configured to: when the fresh air blower is running and the air conditioner is in cooling mode; if the humidity value detected by the second sensor is greater than the upper humidity threshold, the heating element is controlled to remain in the on state; if the humidity value detected by the second sensor is not greater than the lower humidity threshold, the heating element is controlled to remain in the off state, and the lower humidity threshold is less than the upper humidity threshold; if the humidity value detected by the second sensor is not greater than the upper humidity threshold and greater than the lower humidity threshold, determine whether the difference between the temperature value detected by the second sensor and the temperature value detected by the first sensor is greater than the first temperature threshold, and if so, control the heating element to remain in the on state, otherwise control the heating element to remain in the off state.

[0005] The air conditioner according to the embodiment of the present invention can improve the comfort of outdoor fresh air and optimize the problem of fresh air condensation.

[0006] According to some embodiments of the present invention, the controller is further configured to: when the fresh air blower is running and the air conditioner is in heating mode; determine whether the difference between the temperature value detected by the second sensor and the temperature value detected by the first sensor is greater than a second temperature threshold; if so, control the heating element to remain in the on state; if not, control the heating element to remain in the off state.

[0007] According to some embodiments of the present invention, the controller is further configured to: when the fresh air blower is running and the air conditioner is in the air supply mode; determine whether the difference between the temperature value detected by the second sensor and the temperature value detected by the first sensor is greater than a second temperature threshold; if so, control the heating element to remain in the on state; if not, control the heating element to remain in the off state.

[0008] According to some embodiments of the present invention, the air conditioner further includes: a fresh air volute, installed in the air conditioner housing and having a volute air inlet and a volute air outlet, the volute air inlet is connected to the fresh air inlet, the volute air outlet is connected to the fresh air outlet, the fresh air fan and the heating element are arranged in the fresh air volute, and the heating element is located at the volute air outlet.

[0009] According to some embodiments of the present invention, on a plane perpendicular to the extension direction of the volute air outlet, the area surrounded by the outer contour of the positive projection of the volute air outlet is within the area surrounded by the outer contour of the positive projection of the heating element, so that the outdoor air flowing from the fresh air volute to the volute air outlet passes through the heating element.

[0010] According to some embodiments of the present invention, the fresh air volute has a section with increased cross-sectional area, and the section with increased cross-sectional area is located between the fresh air fan and the volute air outlet in the flow direction of the outdoor air. The fresh air fan guides the outdoor air in the fresh air volute through the section with increased cross-sectional area and the volute air outlet in sequence. The cross-sectional area of ​​the section with increased cross-sectional area is larger than the cross-sectional area of ​​the volute air outlet, and the heating element is located in the section with increased cross-sectional area.

[0011] According to some embodiments of the present invention, the air conditioner further includes: a mounting part, respectively connected to the fresh air volute and the heating element, the fresh air volute is made of plastic material, the mounting part is made of metal material, and the heating element is spaced apart from the fresh air volute.

[0012] According to some embodiments of the present invention, the distance between the heating element and the fresh air volute is not less than 8 mm.

[0013] According to some embodiments of the present invention, the inner surface of the fresh air shell is provided with an inwardly protruding bump portion, the bump portion is located between the volute air inlet and the fresh air inlet, the inner side surface of the bump portion is constructed with a mounting groove, the second sensor is inserted into the mounting groove, the bump portion is also constructed with a through hole passing through it along its thickness direction, and the fresh air inlet is connected with the volute air inlet through the through hole.

[0014] According to some embodiments of the present invention, the air conditioner further includes: a ventilation grille installed on the inner side surface of the protrusion portion and covering the installation groove, and the second sensor contacts the outdoor air in the fresh air volute through the gap between the grilles on the ventilation grille.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 is a control flow chart of an air conditioner according to an embodiment of the present invention.

[0018] Figure 2 2 is a schematic structural diagram of an outdoor unit of an air conditioner according to an embodiment of the present invention.

[0019] Figure 3 FIG. 4 is an exploded view of an outdoor unit of an air conditioner according to an embodiment of the present invention.

[0020] Figure 4 1 is a schematic diagram of the assembly of a fresh air casing and a fresh air volute of an air conditioner according to an embodiment of the present invention.

[0021] Figure 5 1 is a schematic assembly diagram of a fresh air casing and a fresh air volute of an air conditioner according to an embodiment of the present invention from another perspective.

[0022] Figure 6 1 is a schematic assembly diagram of the fresh air housing and the fresh air volute of the air conditioner according to an embodiment of the present invention from another perspective.

[0023] Figure 7 2 is a schematic structural diagram of a fresh air volute of an air conditioner according to an embodiment of the present invention.

[0024] Figure 8 2 is a structural schematic diagram of a fresh air volute of an air conditioner from another perspective according to an embodiment of the present invention.

[0025] Figure 9 yes Figure 8Cross-sectional view at AA.

[0026] Figure 10 yes Figure 9 Detailed view of C.

[0027] Figure 11 yes Figure 8 Cross-sectional view at BB.

[0028] Figure 12 is an exploded view of an air conditioner according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] Air conditioner 1.

[0031] Outdoor unit 100, outdoor heat exchanger 110,

[0032] Fresh air housing 200, fresh air inlet 210, fresh air outlet 220, protrusion 230, mounting groove 231, through hole 232, filter element 240, fresh air pipe 250,

[0033] Fresh air volute 300, volute air inlet 310, volute air outlet 320, cross-sectional area enlarged section 330,

[0034] Fresh air blower 400 , heating element 500 , second sensor 600 , mounting element 700 , ventilation grille 800 . DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0038] In the description of the present invention, “multiple” means two or more, and “several” means one or more.

[0039] Hereinafter, an air conditioner 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0040] like Figures 1-12 As shown, the air conditioner 1 according to the embodiment of the present invention comprises an indoor unit, an outdoor unit 100 and a controller. The heating element 500 may be a positive temperature coefficient thermistor (PTC).

[0041] The indoor unit is provided with a first sensor for detecting the indoor temperature. The outdoor unit 100 is connected to the indoor unit. When the indoor unit heats the room, the outdoor unit 100 absorbs heat outdoors. When the indoor unit cools the room, the outdoor unit 100 releases heat outdoors. The outdoor unit 100 includes a fresh air module, which includes a fresh air housing 200, a fresh air fan 400, a heating element 500, and a second sensor 600.

[0042] The fresh air housing 200 is provided with a fresh air inlet 210 and a fresh air outlet 220. The fresh air outlet 220 is connected to the indoor unit. The fresh air blower 400 is installed in the fresh air housing 200. The heating element 500 is installed in the fresh air housing 200. Through the operation of the fresh air blower 400, the outdoor air is guided to enter the fresh air housing 200 through the fresh air inlet 210, and forms a heated air flow through the heating element 500. The heated air flow flows into the indoor unit through the fresh air outlet 220 and is then discharged into the room through the indoor unit. The second sensor 600 is installed in the fresh air housing 200 and is closer to the fresh air inlet 210 than the heating element 500. The second sensor 600 is used to detect the temperature and humidity of the outdoor air. The controller is configured to: When the fresh air blower 400 is running and the air conditioner 1 is in cooling mode; if the humidity value detected by the second sensor 600 is greater than the upper humidity threshold, the heating element 500 is controlled to remain in the on state; if the humidity value detected by the second sensor 600 is not greater than the lower humidity threshold, the heating element 500 is controlled to remain in the off state, and the lower humidity threshold is less than the upper humidity threshold; if the humidity value detected by the second sensor 600 is not greater than the upper humidity threshold and greater than the lower humidity threshold, it is determined whether the difference between the temperature value detected by the second sensor 600 and the temperature value detected by the first sensor is greater than the first temperature threshold, if so, the heating element 500 is controlled to remain in the on state, otherwise, the heating element 500 is controlled to remain in the off state.

[0043] Among them, by turning on the heating element 500, the outdoor air flowing through the fresh air housing 200 can be heated, reducing the temperature difference between the outdoor air and the indoor air at the fresh air outlet 220, and by turning off the heating element 500, the heating of the outdoor air flowing through the fresh air housing 200 can be stopped.

[0044] According to the air conditioner 1 of the embodiment of the present invention, the indoor unit is provided with a first sensor for detecting the indoor temperature, and the second sensor 600 is used to detect the temperature and humidity of the outdoor air. In this way, the air conditioner 1 can detect the indoor temperature through the first sensor and transmit the indoor temperature to the controller, and at the same time can detect the outdoor temperature and outdoor air humidity through the second sensor 600, and transmit the detected outdoor temperature and outdoor air humidity to the controller, so that the controller can calculate the temperature difference between the indoor temperature and the outdoor temperature.

[0045] In addition, the outdoor unit 100 is connected to the indoor unit. When the indoor unit heats the room, the outdoor unit 100 absorbs heat outdoors. When the indoor unit cools the room, the outdoor unit 100 releases heat outdoors. The fresh air housing 200 is installed outside the outdoor unit 100 and is provided with a fresh air inlet 210 and a fresh air outlet 220. The fresh air fan 400 is installed in the fresh air housing 200.

[0046] In this way, the fresh air housing 200 can accommodate a fixed fresh air blower 400. The operation of the fresh air blower 400 can form an airflow so that the outdoor fresh air can be sequentially guided through the fresh air inlet 210 and the fresh air outlet 220 into the room, thereby using the outdoor fresh air to purify the indoor air and adjust the proportion of the indoor air. In addition, when the indoor unit is heating the room, the heat exchanger of the outdoor unit 100 can act as an evaporator, thereby absorbing heat from the outdoor air through the outdoor heat exchanger 110, and then releasing heat to the room through the indoor heat exchanger, thereby transferring the outdoor heat to the room to heat the room; when cooling the room, the outdoor heat exchanger 110 can act as a condenser, thereby releasing heat to the outdoor air through the outdoor heat exchanger 110, and then absorbing indoor heat through the indoor heat exchanger, thereby transferring the indoor heat to the outside to cool the room.

[0047] In addition, the heating element 500 is installed in the fresh air housing 200. Through the operation of the fresh air fan 400, the outdoor air is guided into the fresh air housing 200 through the fresh air inlet 210, and forms a heated air flow through the heating element 500. The heated air flow flows into the room through the fresh air outlet 220. The second sensor 600 is installed in the fresh air housing 200 and is closer to the fresh air inlet 210 than the heating element 500.

[0048] For example, the outdoor unit 100 of the air conditioner 1 further includes a fresh air duct 250. One end of the fresh air duct 250 extends into the fresh air housing 200 through the fresh air outlet 220, and the other end of the fresh air duct 250 extends into the room, so that heated air flows into the room through the fresh air duct 250. Thus, the outdoor fresh air can be heated by the heating element 500 to reduce the temperature difference between the indoor and outdoor temperatures and to reduce the humidity of the outdoor fresh air. This allows the outdoor fresh air and indoor air to meet and generate condensation, thereby improving the comfort of the outdoor fresh air intake.

[0049] In addition, if Figure 1 As shown, the controller is configured as follows: when the fresh air blower 400 is running and the air conditioner 1 is in cooling mode; if the humidity value detected by the second sensor 600 is greater than the humidity upper limit threshold, the heating element 500 is controlled to remain in the on state. In this way, when the second sensor 600 detects that the humidity value of the outdoor fresh air is large, the outdoor fresh air is heated by turning on the heating element 500, which can increase the temperature of the outdoor fresh air, thereby making the outdoor fresh air drier, so as to reduce the humidity of the outdoor fresh air and improve the anti-condensation problem of the outdoor fresh air. Even if the outdoor fresh air enters the room from the fresh air inlet 210, condensation water will not be precipitated when the temperature of the outdoor fresh air drops.

[0050] If the humidity value detected by the second sensor 600 is not greater than the humidity lower limit threshold, the heating element 500 is controlled to remain in the off state, and the humidity lower limit threshold is less than the humidity upper limit threshold. It can be understood that the humidity lower limit value can be set to be smaller. When the humidity value of the outdoor fresh air detected by the second sensor 600 is less than the humidity lower limit value, it means that the humidity of the outdoor fresh air is relatively small. At this time, the anti-condensation ability of the outdoor fresh air is relatively strong, and there is no need to turn on the heating element 500 to dry the outdoor fresh air. This not only avoids the occurrence of condensed water, but also reduces the energy consumption of the heating element 500, which is beneficial to saving energy consumption of the air conditioner 1.

[0051] If the humidity value detected by the second sensor 600 is not greater than the upper humidity threshold and greater than the lower humidity threshold, it is determined whether the difference between the temperature value detected by the second sensor 600 and the temperature value detected by the first sensor is greater than the first temperature threshold. If so, the heating element 500 is controlled to remain in the on state; otherwise, the heating element 500 is controlled to remain in the off state.

[0052] That is, if the humidity of the outdoor fresh air is moderate and the difference between the indoor temperature and the outdoor temperature is large, the outdoor fresh air temperature can be further increased by turning on the heating element 500 to heat the outdoor fresh air, thereby drying the outdoor fresh air to reduce the humidity of the outdoor fresh air and improve the anti-condensation ability of the outdoor fresh air, thereby preventing the outdoor fresh air from dropping in temperature and forming condensed water after entering the room.

[0053] If the humidity of the outdoor fresh air is moderate, and if the difference between the indoor temperature and the outdoor temperature is small, the temperature change of the outdoor fresh air after entering the room is small, and the outdoor fresh air will not produce condensed water. At this time, there is no need to turn on the heating element 500, which can reduce the energy consumption of the heating element 500 and further save the energy consumption of the air conditioner 1.

[0054] In this way, the air conditioner 1 according to the embodiment of the present invention can improve the comfort of outdoor fresh air, optimize the problem of fresh air condensation, and save energy consumption.

[0055] In some specific embodiments of the present invention, Figure 1 As shown, the controller is also configured to:

[0056] When the fresh air blower 400 is running and the air conditioner 1 is in heating mode;

[0057] Determine whether the difference between the temperature value detected by the second sensor 600 and the temperature value detected by the first sensor is greater than a second temperature threshold;

[0058] If yes, the heating element 500 is controlled to remain in the on state;

[0059] If not, the heating element 500 is controlled to remain in the off state.

[0060] It can be understood that when the air conditioner 1 is in heating mode, the outdoor temperature is usually lower than the indoor temperature. The controller judges the difference between the indoor temperature and the outdoor temperature. If the difference between the indoor temperature and the outdoor temperature is large, the heating element 500 is turned on, thereby increasing the temperature of the outdoor fresh air, avoiding the indoor air from cooling down significantly after contacting the outdoor fresh air, thereby avoiding the precipitation of condensed water due to the cooling of the indoor air; if the difference between the indoor temperature and the outdoor temperature is small, the indoor air will not cause the temperature of the indoor air to drop significantly after contacting the outdoor fresh air, and the indoor air will not be easily cooled to precipitate condensed water. At this time, there is no need to turn on the heating element 500. While introducing outdoor fresh air to purify the indoor air, no condensed water will be generated, and the energy consumption of the heating element 500 can be saved.

[0061] In some specific embodiments of the present invention, Figure 1 As shown, the controller is also configured to:

[0062] When the fresh air blower 400 is running and the air conditioner 1 is in the air supply mode;

[0063] Determine whether the difference between the temperature value detected by the second sensor 600 and the temperature value detected by the first sensor is greater than a second temperature threshold;

[0064] If yes, the heating element 500 is controlled to remain in the on state;

[0065] If not, the heating element 500 is controlled to remain in the off state.

[0066] In this way, the controller judges the difference between the indoor temperature and the outdoor temperature. If the difference between the indoor temperature and the outdoor temperature is large, it means that the indoor temperature is much higher than the outdoor temperature, or the outdoor temperature is much higher than the indoor temperature. At this time, the heating element 500 is turned on, which can increase the temperature of the outdoor fresh air and reduce the humidity of the outdoor fresh air to improve the anti-condensation problem of the outdoor fresh air, or reduce the temperature difference between the indoor temperature and the outdoor temperature to avoid the precipitation of condensation water after the indoor temperature and the outdoor temperature contact; if the difference between the indoor temperature and the outdoor temperature is small, it means that the indoor temperature and the outdoor temperature are close, and the indoor air will not cause the temperature of the indoor air or the temperature of the outdoor fresh air to drop significantly after contacting the outdoor fresh air, then the indoor air and the outdoor fresh air are not easy to cool down and condense water. At this time, there is no need to turn on the heating element 500. No condensation water will be generated while introducing outdoor fresh air to purify the indoor air, and the energy consumption of the heating element 500 can be saved.

[0067] In some specific embodiments of the present invention, Figure 3-Figure 8 As shown, the air conditioner 1 further includes a fresh air volute 300 .

[0068] The fresh air volute 300 is installed in the air conditioner shell and has a volute air inlet 310 and a volute air outlet 320. The volute air inlet 310 is connected to the fresh air inlet 210, and the volute air outlet 320 is connected to the fresh air outlet 220. The fresh air fan 400 and the heating element 500 are arranged in the fresh air volute 300, and the heating element 500 is located at the volute air outlet 320.

[0069] In this way, the outdoor fresh air heated by the heating element 500 can directly enter the room through the fresh air outlet 220 and the fresh air duct 250, avoiding the outdoor fresh air heated by the heating element 500 from having too long a path to flow into the room, and thus avoiding the heat of the heated outdoor fresh air from being dissipated outward during the flow process, thereby avoiding the temperature of the outdoor fresh air from dropping, so that the outdoor fresh air can maintain the heated temperature when entering the room, thereby reducing the temperature difference between the outdoor fresh air and the indoor air, and reducing the humidity value of the outdoor fresh air, avoiding the problem of condensation of the fresh air.

[0070] The heating element 500 is also arranged at the volute air outlet 320. The wind speed at the volute air outlet 320 is fast and the air volume is large. Therefore, the temperature difference between the surface of the heating element 500 and the outdoor air at the volute air outlet 320 is large, and the heat exchange efficiency is higher. When the heating element 500 is at the same power, the heating efficiency of the heating element 500 at the volute air outlet 320 is the highest. At the same time, the heat generated by the heating element 500 at the volute air outlet 320 is dissipated the least, which can maximize the temperature of the fresh air entering the room.

[0071] In some specific embodiments of the present invention, Figure 10As shown, on a plane perpendicular to the extension direction of the volute air outlet 320, the area surrounded by the outer contour of the positive projection of the volute air outlet 320 is within the area surrounded by the outer contour of the positive projection of the heating element 500, so that the outdoor air flowing from the fresh air volute 300 to the volute air outlet 320 passes through the heating element 500.

[0072] That is to say, the cross-sectional area of ​​the heating element 500 in the extension direction perpendicular to the volute air outlet 320 needs to be larger than the cross-sectional area of ​​the volute air outlet 320. In this way, the heating element 500 can completely cover the volute air outlet 320, further improving the efficiency of the heating element 500 in heating the outdoor fresh air, so that all or nearly all outdoor fresh air will first flow through the heating element 500 and be heated when flowing to the volute air outlet 320, thereby more effectively reducing the temperature difference between the outdoor fresh air and the indoor air and the humidity of the outdoor fresh air, so as to avoid the generation of condensation water at the fresh air outlet 220.

[0073] In some specific embodiments of the present invention, Figures 5-10 As shown, the fresh air volute 300 has a cross-sectional area increased section 330, and the cross-sectional area increased section 330 is located between the fresh air fan 400 and the volute air outlet 320 in the flow direction of the outdoor air. The fresh air fan 400 guides the outdoor air in the fresh air volute 300 to pass through the cross-sectional area increased section 330 and the volute air outlet 320 in sequence. The cross-sectional area of ​​the cross-sectional area increased section 330 is larger than the cross-sectional area of ​​the volute air outlet 320, and the heating element 500 is located in the cross-sectional area increased section 330.

[0074] In this way, the cross-sectional area increased section 330 has more space, which is convenient for installing and fixing the heater 500. Moreover, it can be understood that the cross-sectional area of ​​the heater 500 is larger than the cross-sectional area of ​​the volute air outlet 320, so that the heater 500 can heat up the outdoor fresh air flowing into the volute air outlet 320. By making the cross-sectional area of ​​the cross-sectional area increased section 330 larger than the cross-sectional area of ​​the volute air outlet 320, the cross-sectional area of ​​the cross-sectional area increased section 330 can be set larger than the cross-sectional area of ​​the heater 500, and then the heater 500 can be installed in the cross-sectional area increased section 330, so as to facilitate fixing the heater 500. In addition, there is no need to increase the cross-sectional area of ​​the entire fresh air volute 300, which can reduce production costs and weight.

[0075] In some specific embodiments of the present invention, Figure 6-Figure 12 As shown, the air conditioner 1 further includes a mounting member 700 .

[0076] They are respectively connected to the fresh air volute 300 and the heating element 500. The fresh air volute 300 is made of plastic material, the mounting member 700 is made of metal material, and the heating element 500 is spaced apart from the fresh air volute 300.

[0077] That is to say, the heating element 500 is installed on the fresh air volute 300 through the mounting member 700, which not only facilitates the connection and fixation of the heating element 500 and the fresh air volute 300, and is convenient for assembly and disassembly, but also the mounting member 700 can separate the fresh air volute 300 and the heating element 500, thereby avoiding direct contact between the heating element 500 and the fresh air volute 300, thereby greatly reducing the heat transferred from the heating element 500 to the fresh air volute 300, and at the same time, it can also reduce the heat transferred from the heating element 500 to the fresh air shell 200, thereby avoiding the temperature of the heating element 500 being too high, causing the fresh air volute 300 or even the fresh air shell 200 to melt, which is beneficial to extending the service life of the fresh air shell 200 and the fresh air volute 300.

[0078] Furthermore, the distance between the heating element 500 and the fresh air volute 300 is not less than 8 mm, thereby extending the length of the heat transfer path between the heating element 500 and the fresh air volute 300 through outdoor air heat transfer to reduce the heat transferred between the heating element 500 and the fresh air volute 300.

[0079] It can be understood that the thermal conductivity of air is smaller than that of the mounting member 700, that is, the heat conduction efficiency of the heating member 500 in transferring heat to the fresh air volute 300 through the air medium is low. By placing a larger distance between the heating member 500 and the fresh air volute 300, the heat transfer efficiency of the heating member 500 to the fresh air volute 300 can be reduced. Moreover, the heat of the heating member 500 can be dissipated into the air during the process of being transferred to the fresh air volute 300, thereby avoiding the high temperature of the heating member 500 from being transferred to the fresh air volute 300. The heat transferred from the heating member 500 to the fresh air volute 300 is lower, further avoiding the fresh air volute 300 from being melted by the high temperature of the heating member 500.

[0080] In some specific embodiments of the present invention, Figure 4-Figure 6 As shown, the inner surface of the fresh air housing 200 is provided with an inwardly protruding bump portion 230, the bump portion 230 is located between the volute air inlet 310 and the fresh air inlet 210, and the inner side surface of the bump portion 230 is constructed with a mounting groove 231, and the second sensor 600 is inserted into the mounting groove 231.

[0081] Specifically, between the fresh air inlet 210 and the volute air inlet 310, the inner wall of the fresh air volute 300 can protrude inward to form a protrusion portion 230, so that the protrusion portion 230 can construct a mounting groove 231. The mounting groove 231 can be recessed inward along the inner surface of the protrusion portion 230. The second sensor 600 can be fixed in the mounting groove 231 by snapping, or fixed in the mounting groove 231 by bolt connection. The mounting groove 231 can block the circumference of the second sensor 600 to fix the second sensor 600 and avoid positional interference between other components and the second sensor 600, thereby protecting the second sensor 600.

[0082] In addition, the protrusion portion 230 is also constructed with a through hole 232 running through it along its thickness direction, and the fresh air inlet 210 is connected to the volute air inlet 310 through the through hole 232. Specifically, the protrusion portion 230 can be provided with a through hole 232 in the center of its length direction, and the outdoor fresh air flows from the fresh air inlet 210 to the volute air inlet 310 through the through hole 232, and the fresh air shell 200 can also be provided with a filter element 240, which is used to filter the outdoor air entering the fresh air shell 200 from the fresh air inlet 210, thereby purifying the fresh air entering the outdoors, which is more beneficial to human life.

[0083] In some specific embodiments of the present invention, Figure 6 As shown, the air conditioner 1 further includes a ventilation grille 800 .

[0084] Mounted on the inner side of the protrusion 230 and covering the mounting slot 231, the second sensor 600 comes into contact with the outdoor air in the fresh air volute 300 through the gaps between the grilles on the ventilation grille 800. Thus, the ventilation grille 800 covers the mounting slot 231, thereby preventing the second sensor 600 from being removed from the mounting slot 231 and preventing other components from protruding into the mounting slot 231 and interfering with the second sensor 600, further enhancing the protection of the second sensor 600.

[0085] Other structures and operations of the air conditioner 1 according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0086] The air conditioner 1 in this application performs a refrigeration cycle of the indoor air conditioner 11 by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0087] The compressor compresses high-temperature, high-pressure refrigerant gas and discharges the compressed gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat into the surrounding environment through the condensation process.

[0088] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. Throughout this cycle, the air conditioner 1 regulates the temperature and humidity of the indoor space.

[0089] In this specification, reference to terms such as "specific embodiment" and "specific example" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0090] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that: include: The indoor unit is provided with a first sensor for detecting indoor temperature; The outdoor unit includes a fresh air module, and the fresh air module includes: A fresh air housing is provided with a fresh air inlet and a fresh air outlet, wherein the fresh air outlet is connected to the indoor unit; A fresh air fan is installed in the fresh air housing; a heating element installed in the fresh air housing, and guiding outdoor air to enter the fresh air housing through the fresh air inlet through the operation of the fresh air blower, and forming a heated air flow through the heating element, and the heated air flow flows into the indoor unit through the fresh air outlet; a second sensor, installed in the fresh air housing and closer to the fresh air inlet than the heating element, the second sensor being used to detect the temperature and humidity of the outdoor air; The controller is configured to: When the fresh air blower is running and the air conditioner is in cooling mode, the humidity value detected by the second sensor is divided into three humidity intervals: greater than an upper humidity threshold, not greater than a lower humidity threshold, and not greater than the upper humidity threshold and greater than the lower humidity threshold; If the humidity value detected by the second sensor is greater than the humidity upper limit threshold, controlling the heating element to remain in the on state; If the humidity value detected by the second sensor is not greater than a lower humidity threshold, controlling the heating element to remain in an off state, the lower humidity threshold being less than the upper humidity threshold; If the humidity value detected by the second sensor is not greater than the humidity upper limit threshold and greater than the humidity lower limit threshold, it is determined whether the difference between the temperature value detected by the second sensor and the temperature value detected by the first sensor is greater than the first temperature threshold. If so, the heating element is controlled to remain in the on state, so as to utilize the heating element to heat and dry the outdoor air flowing through the fresh air inlet, thereby reducing the humidity of the outdoor air. Otherwise, the heating element is controlled to remain in the off state.

2. The air conditioner according to claim 1, characterized in that The controller is further configured to: When the fresh air blower is running and the air conditioner is in heating mode; determining whether a difference between a temperature value detected by the second sensor and a temperature value detected by the first sensor is greater than a second temperature threshold; If yes, controlling the heating element to remain in the on state; If not, the heating element is controlled to remain in the off state.

3. The air conditioner according to claim 1, characterized in that The controller is further configured to: When the fresh air blower is running and the air conditioner is in air supply mode; determining whether a difference between a temperature value detected by the second sensor and a temperature value detected by the first sensor is greater than a second temperature threshold; If yes, controlling the heating element to remain in the on state; If not, the heating element is controlled to remain in the off state.

4. The air conditioner according to claim 1, wherein: Also includes: The fresh air volute is installed in the air conditioner housing and has a volute air inlet and a volute air outlet. The volute air inlet is connected to the fresh air inlet, and the volute air outlet is connected to the fresh air outlet. The fresh air fan and the heating element are arranged in the fresh air volute, and the heating element is located at the volute air outlet.

5. The air conditioner according to claim 4, characterized in that On a plane perpendicular to the extension direction of the volute air outlet, the area surrounded by the outer contour of the positive projection of the volute air outlet is within the area surrounded by the outer contour of the positive projection of the heating element, so that the outdoor air flowing from the fresh air volute to the volute air outlet passes through the heating element.

6. The air conditioner according to claim 5, characterized in that The fresh air volute has a section with increased cross-sectional area, and the section with increased cross-sectional area is located between the fresh air fan and the volute air outlet in the flow direction of the outdoor air. The fresh air fan guides the outdoor air in the fresh air volute to pass through the section with increased cross-sectional area and the volute air outlet in sequence. The cross-sectional area of ​​the section with increased cross-sectional area is larger than the cross-sectional area of ​​the volute air outlet, and the heating element is located in the section with increased cross-sectional area.

7. The air conditioner according to claim 4, characterized in that Also includes: The mounting member is respectively connected to the fresh air volute and the heating member. The fresh air volute is made of plastic material, the mounting member is made of metal material, and the heating member is spaced apart from the fresh air volute.

8. The air conditioner according to claim 7, characterized in that The distance between the heating element and the fresh air volute is not less than 8 mm.

9. The air conditioner according to claim 4, characterized in that The inner surface of the fresh air shell is provided with an inwardly protruding bump portion, and the bump portion is located between the volute air inlet and the fresh air inlet. The inner side surface of the bump portion is constructed with a mounting groove, and the second sensor is inserted into the mounting groove. The bump portion is also constructed with a through hole passing through it along its thickness direction, and the fresh air inlet is connected with the volute air inlet through the through hole.

10. The air conditioner according to claim 9, characterized in that Also includes: A ventilation grille is installed on the inner side of the protruding block and covers the installation groove. The second sensor contacts the outdoor air in the fresh air volute through the gaps between the grilles on the ventilation grille.

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