Fresh air module and air conditioner

Abstract

The application provides a fresh air module and an air conditioner, and belongs to the technical field of air conditioners. The fresh air module comprises an end plate, a first middle frame, a second middle frame, a volute, a fresh air filter screen, a purification filter screen and a fan. The end plate and the second middle frame are arranged on the opposite sides of the first middle frame and surround to form an air cavity, the volute is arranged on the side of the second middle frame away from the first middle frame, the fan is arranged in the volute, the side of the second middle frame close to the volute is provided with an air inlet, and the volute is provided with an air outlet. The purification filter screen is at least partially arranged in the first middle frame, the fresh air filter screen is at least partially arranged in the second middle frame, and the fresh air filter screen and the purification filter screen separate the air cavity into a first chamber, a second chamber and a third chamber. The fresh air module of the application can at least realize the functions of fresh air and purification.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to a fresh air module and an air conditioner. BACKGROUND

[0002] At present, with the improvement of the quality of life of the nation, the user's functional requirements for the air conditioner are not limited to refrigeration and heating, but also require the freshness of indoor air. Therefore, the air conditioner in the prior art generally introduces a fresh air function to improve user comfort and improve the indoor environment of the user.

[0003] However, the existing fresh air device installed on the air conditioner can only realize the fresh air function, resulting in single function. SUMMARY

[0004] The problem solved by the present application is that the existing fresh air module has a single function.

[0005] To solve the above problems, the present application provides a fresh air module and an air conditioner, which can realize the fresh air function and also can purify indoor air and the like.

[0006] In a first aspect, the present application provides a fresh air module, comprising an end plate, a first middle frame, a second middle frame, a volute, a fresh air filter screen, a purification filter screen and a fan;

[0007] The end plate and the second middle frame are arranged on opposite sides of the first middle frame and form a wind cavity, the volute is arranged on the side of the second middle frame away from the first middle frame, the fan is arranged in the volute, the side of the second middle frame close to the volute is provided with an air inlet, and the volute is provided with an air outlet;

[0008] The purification filter screen is at least partially arranged in the first middle frame, and the fresh air filter screen is at least partially arranged in the second middle frame, and the fresh air filter screen and the purification filter screen divide the wind cavity into a first chamber, a second chamber and a third chamber;

[0009] The end plate, the first middle frame and the purification filter screen form the first chamber, and the end plate and / or the first middle frame are provided with a purification air inlet communicating with the first chamber;

[0010] The second middle frame and the fresh air filter screen form the second chamber, and the second middle frame is provided with a fresh air inlet communicating with the second chamber;

[0011] The fresh air filter screen, the purification filter screen and the second middle frame form the third chamber, and the air inlet communicates with the third chamber;

[0012] In the fresh air mode, the fan rotates to make outdoor fresh air flow into the second chamber through the fresh air inlet, flow into the third chamber through the fresh air filter, flow into the volute through the air inlet, and flow to the indoor through the air outlet.

[0013] In the purification mode, the fan rotates to make indoor dirty air flow to the first chamber through the purification inlet, flow into the third chamber through the purification filter, flow into the volute through the air inlet, and flow to the indoor through the air outlet.

[0014] The present application sets the end plate, the first middle frame, the second middle frame and the volute, so that the molding and manufacturing of the fresh air module shell can be facilitated. At the same time, the present application sets the fresh air inlet, the purification inlet and the air outlet, so that the fresh air inlet or the purification inlet can be selectively opened to realize the fresh air function or the purification function under the action of the fan, or the fresh air inlet and the purification inlet can be simultaneously opened to realize the fresh air and purification functions simultaneously through the fan, thereby solving the problem of single function of the fresh air module in the prior art. Moreover, the fresh air and purification functions can be realized by one fan, so that the cost of the fresh air module can be reduced and the volume can be relatively smaller.

[0015] In an optional embodiment, the second middle frame is provided with a dirty air inlet communicating with the third chamber;

[0016] In the dirty air mode, the fan rotates to make indoor dirty air flow to the third chamber through the dirty air inlet, flow into the volute through the air inlet, and flow to the outdoor through the air outlet.

[0017] In the application, the dirty air inlet is arranged on the second middle frame to communicate with the third chamber, so that the fresh air module of the present application can also realize the dirty air function to discharge the indoor dirty air to the outdoor, and in the dirty air mode, the indoor dirty air does not pass through the fresh air filter and the purification filter, so that the dirty blocking of the fresh air filter and the purification filter can be avoided.

[0018] In an optional embodiment, the second middle frame comprises an upper part and a lower part connected to each other;

[0019] The width of the lower part is greater than the width of the upper part, so that the lower part protrudes the upper part on one side close to the end plate;

[0020] The first middle frame is arranged on the top of the area where the lower part protrudes the upper part and connected to the upper part;

[0021] The end plate is arranged on the side of the first middle frame and on the side of the lower part;

[0022] The fresh air filter screen is horizontally arranged in the lower part, and the fresh air filter screen and the lower part enclose the second chamber, the fresh air inlet is arranged in the lower part, and the first chamber and the third chamber are formed at the top of the second chamber.

[0023] The fresh air filter screen is horizontally arranged in the lower part, and the fresh air filter screen and the lower part enclose the second chamber, the fresh air inlet is arranged in the lower part, and the first chamber and the third chamber are formed at the top of the second chamber.

[0024] In an optional embodiment, the lower part is horizontally provided with a socket, and the inner wall of the lower part is provided with a limiting strip corresponding to the socket, the fresh air filter screen is inserted into the socket and slides along the limiting strip into the lower part.

[0025] The socket and the limiting strip can facilitate the installation and replacement of the fresh air filter screen. The end plate, the first middle frame and the second middle frame are separately arranged, so that the limiting strip can be conveniently formed on the inner wall of the lower part during manufacturing.

[0026] In an optional embodiment, the limiting strip includes an upper limiting strip and a lower limiting strip, the lower limiting strip and the upper limiting strip are arranged on the inner wall of the lower part, the lower limiting strip abuts against the bottom wall of the fresh air filter screen, and the upper limiting strip abuts against the top wall of the fresh air filter screen.

[0027] The upper limiting strip and the lower limiting strip can relatively fix the top and the bottom of the fresh air filter screen, and a sliding groove is formed between the upper limiting strip and the lower limiting strip, so that the sliding of the fresh air filter screen can be conveniently realized, and the second middle frame can be integrally formed by injection molding.

[0028] In an optional embodiment, the first middle frame includes a top wall and front and rear side walls arranged on both sides of the top wall, one end of the front and rear side walls away from the top wall is connected with the lower part respectively, the front side wall is provided with an opening, the opening is inclined from the top to the bottom of the front side wall towards the end plate, and the purification filter screen is inserted into the air cavity through the opening.

[0029] The opening is arranged on the front side wall of the first middle frame, so that the installation and disassembly of the purification filter screen can be conveniently realized. The inclined arrangement of the opening can make the purification filter screen away from the dirty air inlet, so that the purification filter screen can be prevented from being contaminated by the dirty air.

[0030] In an optional embodiment, the first middle frame further comprises a guide rail and a limiting wall, one end of the guide rail is connected with the front side wall, the other end is connected with the rear side wall, and corresponds to the bottom of the opening, the limiting wall is connected with the top wall, the front side wall and the rear side wall respectively, the limiting wall is provided with a mounting portion corresponding to the bottom wall of the opening, and the purification filter screen is mounted between the guide rail and the mounting portion and can move along the guide rail and the mounting portion.

[0031] In the embodiment, the first middle frame is designed separately from the end plate and the second middle frame, so that the guide rail and the mounting portion can be conveniently manufactured in the first middle frame. The guide rail provided in the application can link the bottom of the front side wall and the rear side wall, so as to improve the strength of the first frame, and can also fix the purification filter screen, so as to facilitate the installation, disassembly and fixation of the purification filter screen.

[0032] In an optional embodiment, the volute comprises a volute body and an air outlet portion in communication with the volute body, the fan is a centrifugal fan, the fan is installed on the volute body and corresponds to the air inlet, the air outlet comprises a first air outlet and a second air outlet, the first air outlet and the second air outlet are both arranged on the air outlet portion, the first air outlet is used for discharging air to the indoor in the fresh air mode and the purification mode, and the second air outlet is used for discharging air to the outdoor in the pollution discharge mode.

[0033] In the application, the air outlet is provided as the first air outlet and the second air outlet, so that air can be supplied to the indoor or discharged to the outdoor according to different working modes of the fresh air module.

[0034] In an optional embodiment, the fresh air inlet and the second air outlet are located on the same side of the fresh air module, and the side wall of the fresh air inlet provided by the second middle frame is inclined to the bottom, and the side wall of the second air outlet provided by the air outlet portion is inclined downward.

[0035] In the application, the second air outlet and the fresh air inlet are arranged on the same side of the fresh air module, which is convenient for being connected on the same fresh air pipeline to realize the supply of fresh air and the discharge of pollution air. The side wall of the fresh air inlet provided by the second middle frame is inclined downward and the side wall of the second air outlet provided by the air outlet portion is inclined downward, which is convenient for connecting the fresh air pipeline.

[0036] In a second aspect, the application provides an air conditioner comprising the fresh air module according to any one of the preceding embodiments.

[0037] The air conditioner provided by the embodiment can facilitate the molding and manufacturing of the fresh air module shell by arranging the end plate, the first middle frame, the second middle frame and the volute, and can realize the fresh air function or the purification function under the action of the fan by selectively opening the fresh air inlet or the purification inlet, or can realize the fresh air and purification functions simultaneously by simultaneously opening the fresh air inlet and the purification inlet, thereby solving the problem of single function of the fresh air module in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 A structural schematic diagram of the air conditioner provided by the embodiment of the application is shown in the figure.

[0039] Figure 2 A structural schematic diagram of the fresh air module provided by the embodiment of the application is shown in the figure.

[0040] Figure 3 A sectional structural schematic diagram of the fresh air module provided by the embodiment of the application in a fresh air mode is shown in the figure.

[0041] Figure 4 A sectional structural schematic diagram of the fresh air module provided by the embodiment of the application in a purification mode is shown in the figure.

[0042] Figure 5 A sectional structural schematic diagram of the fresh air module provided by the embodiment of the application in a pollution discharge mode is shown in the figure.

[0043] Figure 6 An exploded schematic diagram of the fresh air module provided by the embodiment of the application is shown in the figure.

[0044] Figure 7 A structural schematic diagram of the first middle frame of the fresh air module provided by the embodiment of the application is shown in the figure.

[0045] Figure 8 A structural schematic diagram of the second middle frame of the fresh air module provided by the embodiment of the application is shown in the figure.

[0046] Figure 9 A structural schematic diagram of the volute of the fresh air module provided by the embodiment of the application is shown in the figure.

[0047] Figure 10 A local exploded schematic diagram of the control valve, the fresh air inlet and the second air outlet of the fresh air module provided by the embodiment of the application is shown in the figure.

[0048] Figure 11 A position schematic diagram of the second valve plate of the fresh air module provided by the embodiment of the application in a fresh air mode or a purification mode is shown in the figure.

[0049] Figure 12The position diagram of the second valve plate of the fresh air module in the pollution discharging mode is provided for the embodiment of the present application.

[0050] Icon: 100 - fresh air module; 110 - end plate; 120 - air cavity; 121 - first chamber; 123 - second chamber; 125 - third chamber; 130 - first middle frame; 131 - purified air inlet; 133 - top wall; 135 - front side wall; 137 - rear side wall; 139 - opening; 141 - guide rail; 143 - limiting wall; 145 - mounting portion; 147 - sliding groove; 149 - mounting groove; 150 - second middle frame; 151 - induced air inlet; 153 - fresh air inlet; 155 - polluted air inlet; 157 - upper part; 159 - lower part; 161 - socket; 163 - limiting strip; 165 - upper limiting strip; 167 - lower limiting strip; 170 - volute; 171 - air outlet; 173 - volute body; 175 - air outlet portion; 177 - fan cavity; 179 - air outlet channel; 181 - first air outlet; 183 - second air outlet; 191 - fresh air filter screen; 193 - purification filter screen; 195 - fan; 197 - valve plate; 210 - control valve; 211 - valve seat; 213 - first valve plate; 215 - second valve plate; 217 - interface; 300 - air conditioner; 310 - indoor unit body; 311 - indoor air inlet; 313 - indoor air outlet; 315 - filter screen replacement opening. DETAILED DESCRIPTION

[0051] The existing fresh air module installed on the air conditioner can only realize the fresh air function, resulting in single function. The air conditioner provided by the embodiment of the present application can realize the functions of indoor air purification and pollution discharging in addition to the fresh air function.

[0052] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0053] Please refer to Figure 1 The air conditioner 300 provided by the embodiment of the present application comprises an indoor unit body 310 and a fresh air module 100 arranged on the indoor unit body 310, and the fresh air module 100 is used to realize the functions of fresh air, purification and the like.

[0054] Please refer to Figures 2-4In the embodiment, the fresh air module 100 comprises an end plate 110, a first middle frame 130, a second middle frame 150, a volute 170, a fresh air filter screen 191, a purification filter screen 193 and a fan 195. The end plate 110 and the second middle frame 150 are arranged on opposite sides of the first middle frame 130 and enclose a wind cavity 120. The volute 170 is arranged on a side of the second middle frame 150 away from the first middle frame 130, the fan 195 is arranged in the volute 170, a wind inlet 151 is arranged on a side of the second middle frame 150 close to the volute 170, and the volute 170 is provided with an air outlet 171. The purification filter screen 193 is at least partially arranged in the first middle frame 130, and the fresh air filter screen 191 is at least partially arranged in the second middle frame 150. The fresh air filter screen 191 and the purification filter screen 193 divide the wind cavity 120 into a first chamber 121, a second chamber 123 and a third chamber 125. The end plate 110, the first middle frame 130 and the purification filter screen 193 enclose the first chamber 121, and the first middle frame 130 is provided with a purification air inlet 131 communicating with the first chamber 121. The second middle frame 150 and the fresh air filter screen 191 enclose the second chamber 123, and the second middle frame 150 is provided with a fresh air air inlet 153 communicating with the second chamber 123. The fresh air filter screen 191, the purification filter screen 193 and the second middle frame 150 enclose the third chamber 125, and the wind inlet 151 communicates with the third chamber 125. As shown in Figure 3 , in the fresh air mode, the fan 195 rotates to make outdoor fresh air flow into the second chamber 123 through the fresh air air inlet 153, flow into the third chamber 125 through the fresh air filter screen 191, flow into the volute 170 through the wind inlet 151, and flow to the indoor through the air outlet 171. Figure 4 , in the purification mode, the fan 195 rotates to make indoor dirty air flow into the first chamber 121 through the purification air inlet 131, flow into the third chamber 125 through the purification filter screen 193, flow into the volute 170 through the wind inlet 151, and flow to the indoor through the air outlet 171.

[0055] The end plate 110, the first middle frame 130, the second middle frame 150 and the volute 170 are arranged, so that the molding and manufacturing of the shell of the fresh air module 100 can be facilitated. Meanwhile, the fresh air inlet 153 and the purification air inlet 131 and the air outlet 171 are arranged, so that the fresh air inlet 153 or the purification air inlet 131 can be selectively opened to realize the fresh air function or the purification function under the action of the fan 195, or the fresh air inlet 153 and the purification air inlet 131 can be simultaneously opened to realize the fresh air and purification functions simultaneously under the action of the fan 195, thereby solving the problem of single function of the fresh air module 100 in the prior art. Moreover, the fresh air and purification functions can be realized by one fan 195, so that the cost of the fresh air module 100 can be reduced and the size thereof is relatively smaller.

[0056] It should be noted that generally the shell of the fresh air module 100 is made by mold injection, which is low in cost, high in efficiency and convenient for batch production. Since the mold injection needs demolding, the structure of the part generally needs to be as simple as possible and the pulling direction is the same. Therefore, the shell of the fresh air module 100 is arranged as the mutually independent end plate 110, the first middle frame 130, the second middle frame 150 and the volute 170, so that the fresh air module 100 can be made by injection more conveniently.

[0057] Of course, in some other embodiments of the present application, the purification air inlet 131 can also be arranged at a position in communication with the first chamber 121 of the end plate 110.

[0058] Please refer to Figure 5 In the embodiment, the second middle frame 150 is arranged with a dirty air inlet 155 in communication with the third chamber 125. In the dirty air exhaust mode, the fan 195 rotates to make the indoor dirty air flow from the dirty air inlet 155 to the third chamber 125, then flow into the volute 170 through the air inlet 151 and flow to the outdoor through the air outlet 171.

[0059] In the embodiment, the dirty air inlet 155 in communication with the third chamber 125 is arranged on the second middle frame 150, so that the fresh air module 100 of the present application can also realize the dirty air exhaust function to exhaust the indoor dirty air to the outdoor, and in the dirty air exhaust mode, the indoor dirty air will not pass through the fresh air filter screen 191 and the purification filter screen 193, so that the dirty blocking of the fresh air filter screen 191 and the purification filter screen 193 can be avoided.

[0060] Please refer to Figure 3 、 Figure 4 and Figure 5In the embodiment, the fresh air module 100 further comprises a valve plate 197, the dirty air inlet 155 is arranged on the top of the second middle frame 150, and the clean air inlet 131 is arranged on the top of the first middle frame 130. The valve plate 197 is movably arranged on the top of the first middle frame 130 and the second middle frame 150, and can be driven to move by a driving member such as a motor. The valve plate 197 can selectively open one of the clean air inlet and the dirty air inlet 155 or simultaneously open or close both.

[0061] Please refer to Figure 2 , Figure 6 and Figure 8 In the embodiment, the second middle frame 150 comprises an upper portion 157 and a lower portion 159 connected with each other. The width of the lower portion 159 is greater than that of the upper portion 157, so that the lower portion 159 protrudes from the upper portion 157 on the side close to the end plate 110. The first middle frame 130 is arranged on the top of the area where the lower portion 159 protrudes from the upper portion 157 and is connected with the upper portion 157. The end plate 110 is partially arranged on the side of the first middle frame 130 and partially arranged on the side of the lower portion 159. The fresh air filter screen 191 is horizontally arranged on the lower portion 159, and the fresh air filter screen 191 and the lower portion 159 form the second chamber 123. The fresh air inlet 153 is arranged on the lower portion 159. The first chamber 121 and the third chamber 125 are formed on the top of the second chamber 123, and the air inlet 151 is formed on the end face opposite to the end plate 110. The bottom of the lower portion 159 is inclined to form a slope on the front side and the rear side, and the fresh air inlet 153 is arranged on the slope on the rear side.

[0062] In the embodiment, the fresh air filter screen 191 is horizontally arranged on the lower portion 159, and the width of the lower portion 159 is greater than that of the upper portion 157, so that the area of the fresh air filter screen 191 can be larger, thereby improving the filtering capacity of the fresh air filter screen 191. The first middle frame 130 is arranged on the top of the lower portion 159, so that the installation of the first middle frame 130 is more convenient.

[0063] In the embodiment, the lower portion 159 is horizontally provided with a socket 161 close to the upper portion 157, and the inner wall of the lower portion 159 is provided with a limiting strip 163 corresponding to the socket 161. The fresh air filter screen 191 is inserted into the socket 161 and slides along the limiting strip 163 into the lower portion 159.

[0064] The insertion opening 161 and the limiting strip 163 can facilitate the installation and replacement of the fresh air filter screen 191. The second middle frame 150 is separately arranged from the first middle frame 130, and the limiting strip 163 can be conveniently formed on the inner wall of the lower part 159 during the manufacturing process.

[0065] In the embodiment, the limiting strip 163 includes an upper limiting strip 165 and a lower limiting strip 167. The lower limiting strip 167 and the upper limiting strip 165 are both arranged on the inner wall of the lower part 159, the lower limiting strip 167 abuts against the bottom wall of the fresh air filter screen 191, and the upper limiting strip 165 abuts against the top wall 133 of the fresh air filter screen 191.

[0066] The upper limiting strip 165 and the lower limiting strip 167 can relatively fix the top and bottom of the fresh air filter screen 191, and form the sliding groove 147, so that the sliding and pulling of the fresh air filter screen 191 can be conveniently achieved, and the second middle frame 150 can be conveniently integrally formed by injection molding.

[0067] Please refer to Figure 2 , Figure 6 and Figure 7 In the embodiment, the first middle frame 130 includes a top wall 133, a front side wall 135 and a rear side wall 137 arranged on both sides of the top wall 133. The front side wall 135 and the rear side wall 137 are connected to the lower part 159 at the ends away from the top wall 133. The purification air inlet 131 is arranged on the top wall 133. The front side wall 135 is provided with an opening 139, which is inclined from the top to the bottom of the front side wall 135 towards the end plate 110, and the purification filter screen 193 is inserted into the air cavity 120 through the opening 139.

[0068] The opening 139 is arranged on the front side wall 135 of the first middle frame 130, so that the installation and disassembly of the purification filter screen 193 can be conveniently achieved. The inclined arrangement of the opening 139 can make the purification filter screen 193 away from the dirty air inlet 155, so that the dirty air can avoid contaminating the purification filter screen 193.

[0069] In the embodiment, the first middle frame 130 further includes a guide rail 141 and a limiting wall 143. One end of the guide rail 141 is connected to the front side wall 135, and the other end is connected to the rear side wall 137 and corresponds to the bottom of the opening 139. The limiting wall 143 is connected to the top wall 133, the front side wall 135 and the rear side wall 137, and the mounting portion 145 corresponding to the bottom wall of the opening 139 is arranged on the limiting wall 143. The purification filter screen 193 is mounted between the guide rail 141 and the mounting portion 145 and can move along the guide rail 141 and the mounting portion 145.

[0070] Due to the different directions of the opening 139 and the socket 161, the guide rail 141 and the mounting portion 145 are different from the upper limiting strip 165 and the lower limiting strip 167, the first middle frame 130 is designed separately from the end plate 110 and the second middle frame 150, so that the guide rail 141 and the mounting portion 145 can be conveniently manufactured in the first middle frame 130. The guide rail 141 can be arranged to connect the bottom of the front side wall 135 and the rear side wall 137, so as to improve the strength of the first frame, and can also be arranged to fix the purification filter screen 193, so as to facilitate the installation, disassembly and fixation of the purification filter screen 193.

[0071] In the embodiment, the guide rail 141 is provided with a sliding groove 147 matched with the width of the purification filter screen 193, the sliding groove 147 is used for moving the purification filter screen 193 when being pulled out, and can form support and sealing for the bottom of the purification filter screen 193, so as to avoid air leakage between the purification filter screen 193 and the guide rail 141. The mounting portion 145 is formed with a mounting groove 149, when the bottom of the purification filter screen 193 slides along the sliding groove 147, one corner of the top of the purification filter screen 193 is mounted in the mounting groove 149, and the mounting groove 149 can also move, so as to realize the up and down limiting and fixation of the purification filter screen 193 and the pulling out during disassembly by the mounting groove 149 and the sliding groove 147.

[0072] Please refer to Figure 2 , Figure 6 and Figure 9 In the embodiment, the volute 170 includes a volute body 173 and an air outlet portion 175 in communication with the volute body 173, the air outlet portion 175 extends from the lower side of the volute body 173 to the lower front side of the volute body 173. The volute body 173 has a fan cavity 177. The air outlet portion 175 has an air outlet passage 179 in communication with the fan cavity 177, the fan 195 is a centrifugal fan 195, the fan 195 is installed in the fan cavity 177 of the volute body 173 and is centered with the air inlet 151. The air outlet 171 includes a first air outlet 181 and a second air outlet 183, the first air outlet 181 and the second air outlet 183 are arranged on the air outlet portion 175 and are in communication with the air outlet passage 179. The first air outlet 181 is formed at the end of the air outlet portion 175, so that when the fresh air module 100 is installed on the indoor unit body 310, the air can be sent to the indoor room obliquely downward. The second air outlet 183 is arranged on the side wall of the rear side of the air outlet portion 175, so as to be located on the same side as the fresh air inlet 153 of the second middle frame 150. The first air outlet 181 is used for discharging air to the indoor room in the fresh air mode and the purification mode. The second air outlet 183 is used for discharging air to the outdoor room in the exhaust air mode.

[0073] Please refer to Figure 10 , Figure 11 and Figure 12In the embodiment, the air outlet 171 is set as the first air outlet 181 and the second air outlet 183, so that the fresh air module 100 can realize air supply to the indoor or air exhaust to the outdoor according to different working modes.

[0074] In the embodiment, the fresh air device further comprises a control valve 210, which is installed at the position where the second air outlet 183 of the air outlet part 175 is arranged and the position where the fresh air inlet 153 of the second middle frame 150 is arranged. The control valve 210 can open the fresh air inlet 153, close the second air outlet 183 and open the first air outlet 181 in the fresh air mode. The control valve 210 can also close the first air outlet 181 and the fresh air inlet 153 and open the second air outlet 183 in the exhaust air mode.

[0075] In the embodiment, the control valve 210 is arranged, so that the opening and closing of the first air outlet 181 and the second air outlet 183 can be realized by the control valve 210, so that the fresh air device can better realize air exhaust to the indoor by the first air outlet 181 in the fresh air mode and air exhaust to the outdoor by the second air outlet 183 in the exhaust air mode. Meanwhile, the control valve 210 can also control the fresh air inlet 153.

[0076] Since the fresh air inlet 153 needs to supply air from the outdoor to the indoor, and the second air outlet 183 needs to supply air from the indoor to the outdoor, both of them need to be connected with the fresh air pipe. In the embodiment, the control valve 210 comprises a valve seat 211, a first valve plate 213 and a second valve plate 215. The first valve plate 213 is movably installed on the valve seat 211, and the second valve plate 215 is rotatably installed on the valve seat 211. The valve seat 211 has an interface 217 for communication with the outdoor, and the valve seat 211 is installed on the second middle frame 150 and the air outlet part 175 and covers the outside of the fresh air inlet 153 and the second air outlet 183. The first valve plate 213 corresponds to the fresh air inlet 153 and can open the fresh air inlet 153 by moving. The second valve plate 215 corresponds to the second air outlet 183 and can close the second air outlet 183 by rotating, or extend into the air outlet channel 179 to close the first air outlet 181.

[0077] The first valve plate 213 and the second valve plate 215 are arranged on the valve seat 211, so that the fresh air inlet and the exhaust air outlet are connected to the interface 217, the fresh air pipe is connected to the interface 217, and the fresh air mode and the exhaust air mode are realized. Meanwhile, the first valve plate 213 can control the on-off of the fresh air inlet 153, the second valve plate 215 can control the on-off of the first air outlet 181 and the second air outlet 183, and the first valve plate 213 and the second valve plate 215 can control the communication of the fresh air inlet 153 and the interface 217 or the second air outlet 183, so that the structure is simple and compact, the volume of the fresh air module is reduced, and the fresh air module is better installed in the air conditioner 300.

[0078] It should be noted that the actions of the first valve plate 213 and the second valve plate 215 are realized by a motor. The motor can be in transmission connection with the first valve plate 213 and the second valve plate 215, and drives the first valve plate 213 and / or the second valve plate 215 to rotate or move through rotation of the motor. The motor can be one or two, and in the case of one motor, the motor is in transmission connection with the first valve plate 213 and the second valve plate 215. When the number of motors is two, the two motors are respectively in transmission connection with the first valve plate 213 and the second valve plate 215.

[0079] Please continue to refer to Figure 1 In the embodiment, the top of the outdoor unit body is provided with an indoor air inlet 311 corresponding to the purified air inlet 131 and the exhaust air inlet 155. The indoor air outlet 313 corresponding to the first air outlet 181 is arranged on the panel and inclined downward, and the indoor air outlet 313 is used for the fresh air module 100 to supply air to the indoor. The filter screen replacement opening 315 corresponding to the socket 161 and the opening 139 is arranged on the panel of the outdoor unit body, and the user can pull out the fresh air filter screen 191 or the purification filter screen 193 through the filter screen replacement opening 315 to replace the fresh air filter screen 191 or the purification filter screen 193.

[0080] In summary, the working principle and beneficial effects of the fresh air module 100 and the air conditioner 300 provided by the embodiment of the application include:

[0081] The fresh air module 100 of the air conditioner 300 provided by the embodiment is provided with an end plate 110, a first middle frame 130, a second middle frame 150 and a volute 170, so that the forming and manufacturing of the fresh air module 100 shell can be facilitated. Meanwhile, the fresh air inlet 153, the purification air inlet 131 and the air outlet 171 are provided, so that the fresh air inlet 153 or the purification air inlet 131 can be selectively opened to realize the fresh air function or the purification function under the action of the fan 195, or the fresh air inlet 153 and the purification air inlet 131 can be simultaneously opened to realize the fresh air and purification functions simultaneously through the fan 195, so that the problem of single function of the fresh air module 100 in the prior art is solved. Moreover, the fresh air and purification functions can be realized by one fan 195, so that the cost of the fresh air module 100 can be reduced and the volume is relatively smaller.

[0082] Although the present application has been disclosed as above, it is not limited to the above. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and the protection scope of the present application should be defined by the scope defined by the claims.

Claims

1. A fresh air module, characterized in that, The fresh air module (100) includes an end plate (110), a first middle frame (130), a second middle frame (150), a volute (170), a fresh air filter (191), a purification filter (193), and a fan (195). The end plate (110) and the second middle frame (150) are disposed on opposite sides of the first middle frame (130) and enclose each other to form a wind cavity (120). The volute (170) is disposed on the side of the second middle frame (150) away from the first middle frame (130). The fan (195) is disposed inside the volute (170). An air inlet (151) is disposed on the side of the second middle frame (150) close to the volute (170). An air outlet (171) is disposed on the volute (170). The purification filter (193) is at least partially disposed within the first middle frame (130), and the fresh air filter (191) is at least partially disposed within the second middle frame (150). The fresh air filter (191) and the purification filter (193) divide the air cavity (120) into a first chamber (121), a second chamber (123), and a third chamber (125). The end plate (110), the first middle frame (130) and the purification filter (193) enclose the first chamber (121), and the end plate (110) and / or the first middle frame (130) are provided with a purification air inlet (131) communicating with the first chamber (121). The second middle frame (150) and the fresh air filter (191) enclose the second chamber (123), and the second middle frame (150) is provided with a fresh air inlet (153) communicating with the second chamber (123). The fresh air filter (191), the purification filter (193), and the second middle frame (150) enclose the third chamber (125), and the air inlet (151) communicates with the third chamber (125); In the fresh air mode, the fan (195) of the fresh air module (100) rotates, allowing outdoor fresh air to flow into the second chamber (123) through the fresh air inlet (153), into the third chamber (125) through the fresh air filter (191), into the volute (170) through the air outlet (151), and into the room through the air outlet (171). In the purification mode, the fresh air module (100) rotates the fan (195), which allows indoor polluted air to flow from the purification air inlet (131) to the first chamber (121), then through the purification filter (193) into the third chamber (125), then through the air outlet (151) into the volute (170), and finally through the air outlet (171) into the room; The end plate (110), the first middle frame (130), the second middle frame (150) and the volute (170) are made by injection molding.

2. The fresh air module according to claim 1, characterized in that, The second middle frame (150) is provided with a sewage air inlet (155) that communicates with the third chamber (125); In the exhaust mode, the fresh air module (100) rotates the fan (195), which allows the indoor exhaust air to flow from the exhaust air inlet (155) to the third chamber (125), then into the volute (170) through the air outlet (151), and then to the outside through the air outlet (171).

3. The fresh air module according to claim 1 or 2, characterized in that, The second middle frame (150) includes an upper portion (157) and a lower portion (159) that are connected to each other. The width of the lower portion (159) is greater than the width of the upper portion (157) so that the lower portion (159) protrudes from the upper portion (157) on the side of the end plate (110). The first middle frame (130) is disposed at the top of the area of ​​the lower part (159) protruding from the upper part (157) and is connected to the upper part (157); The end plate (110) is partially disposed on the side of the first middle frame (130), and the other part is disposed on the side of the lower part (159); The fresh air filter (191) is horizontally disposed on the lower part (159), and the fresh air filter (191) and the lower part (159) enclose the second chamber (123). The fresh air inlet (153) is disposed on the lower part (159), and the first chamber (121) and the third chamber (125) are formed on the top of the second chamber (123).

4. The fresh air module according to claim 3, characterized in that, The lower part (159) is horizontally provided with an inlet (161), and the inner wall of the lower part (159) is provided with a limiting strip (163) corresponding to the inlet (161). The fresh air filter (191) extends into the inlet (161) and slides along the limiting strip (163) into the lower part (159).

5. The fresh air module according to claim 4, characterized in that, The limiting strip (163) includes an upper limiting strip (165) and a lower limiting strip (167). The lower limiting strip (167) and the upper limiting strip (165) are both disposed on the inner wall of the lower part (159). The lower limiting strip (167) abuts against the bottom wall of the fresh air filter (191), and the upper limiting strip (165) abuts against the top wall (133) of the fresh air filter (191).

6. The fresh air module according to claim 3, characterized in that, The first middle frame (130) includes a top wall (133) and a front side wall (135) and a rear side wall (137) disposed on both sides of the top wall (133). The ends of the front side wall (135) and the rear side wall (137) away from the top wall (133) are respectively connected to the lower part (159). The front side wall (135) is provided with an opening (139). The opening (139) is inclined from the top to the bottom of the front side wall (135) toward the end plate (110). The purification filter (193) is inserted into the air cavity (120) through the opening (139).

7. The fresh air module according to claim 6, characterized in that, The first middle frame (130) also includes a guide rail (141) and a limiting wall (143). One end of the guide rail (141) is connected to the front side wall (135), and the other end is connected to the rear side wall (137), and corresponds to the bottom of the opening (139). The limiting wall (143) is connected to the top wall (133), the front side wall (135), and the rear side wall (137) respectively. The limiting wall (143) is provided with a mounting part (145) corresponding to the bottom wall of the opening (139). The purification filter (193) is installed between the guide rail (141) and the mounting part (145), and can move along the guide rail (141) and the mounting part (145).

8. The fresh air module according to claim 2, characterized in that, The volute (170) includes a volute body (173) and an air outlet (175) communicating with the volute body (173). The fan (195) is a centrifugal fan (195). The fan (195) is installed on the volute body (173) and corresponds to the air inlet (151). The air outlet (171) includes a first air outlet (181) and a second air outlet (183). The first air outlet (181) and the second air outlet (183) are both located in the air outlet (175). The first air outlet (181) is used to exhaust air into the room in the fresh air mode and the purification mode. The second air outlet (183) is used to exhaust air into the outside in the sewage discharge mode.

9. The fresh air module according to claim 8, characterized in that, The fresh air inlet (153) and the second air outlet (183) are located on the same side of the fresh air module (100), and the side wall of the fresh air inlet (153) of the second middle frame (150) is inclined to the bottom, and the side wall of the second air outlet (183) of the air outlet (175) is inclined downward.

10. An air conditioner, characterized in that, Includes the fresh air module (100) as described in any one of claims 1-9.

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