Fresh air module and air conditioner

Abstract

This invention provides a fresh air module and an air conditioner, relating to the field of air conditioning technology. The fresh air module includes a housing and a waste air duct disposed outside the housing. The housing has a waste air inlet, a first connecting port, a second connecting port, and a waste air outlet. A waste air inlet channel is formed between the waste air inlet and the first connecting port, and a waste air outlet channel is formed between the second connecting port and the waste air outlet. The waste air duct includes a first straight pipe section and a second straight pipe section connected together. The port of the first straight pipe section is directly connected to the first connecting port, and the port of the second straight pipe section is directly connected to the second connecting port. The air conditioner includes the aforementioned fresh air module. The waste air duct in this fresh air module has low air resistance and high efficiency in conveying waste air.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a fresh air module and an air conditioner. Background Technology

[0002] As people's requirements for living and working environments increase, air conditioners, in addition to regulating indoor temperature, have added fresh air modules capable of supplying fresh air into the room. To further improve the cleanliness of the indoor environment and the efficiency of fresh air delivery, existing fresh air modules have also been equipped with the function of expelling stale air from the room to the outside. In existing air conditioners, the stale air passage of the fresh air module is relatively tortuous, resulting in high air resistance and low efficiency in expelling stale air. Summary of the Invention

[0003] The purpose of this invention is to provide a fresh air module and an air conditioner to solve the technical problems of existing fresh air modules being large in size, occupying a lot of space, and having a tortuous channel in the sludge section, resulting in high air resistance in the sludge channel and low sludge exhaust efficiency.

[0004] To solve the above problems, the present invention provides a fresh air module, including a housing and a waste air supply pipe disposed outside the housing. The housing is provided with a waste air inlet, a first connecting port, a second connecting port and a waste air outlet. A waste air inlet channel is formed between the waste air inlet and the first connecting port, and a waste air outlet channel is formed between the second connecting port and the waste air outlet.

[0005] The wastewater conveying pipe includes a first straight pipe section and a second straight pipe section connected together. The port of the first straight pipe section is directly connected to the first connecting port, and the port of the second straight pipe section is directly connected to the second connecting port.

[0006] The fresh air module provided by this invention has its waste air delivery duct externally mounted on the housing, which effectively reduces the number and complexity of the internal channels, thereby improving the ease of housing manufacturing and waste air channel maintenance. This, in turn, improves the manufacturing convenience of the fresh air module and reduces its subsequent maintenance costs. Furthermore, during the flow of waste air along the waste air delivery duct between the first and second connecting ports, a change of direction occurs at most once at the connection between the first and second straight pipe sections. Consequently, the waste air delivery duct has lower air resistance, higher waste air delivery efficiency, smoother waste air flow, and less noise pollution, thus reducing the air resistance of the waste air channel and improving its delivery efficiency.

[0007] Optionally, the housing includes an upper shell and a lower shell. Along the front-rear direction, the top region of the lower shell includes a front arrangement area and a rear arrangement area, and the upper shell communicates with the front arrangement area of ​​the lower shell. The first communication port is located on the rear sidewall of the upper shell, and the second communication port is located in the rear arrangement area of ​​the lower shell. The fresh air module makes full use of the space in the height direction of the accommodating cavity, thereby reducing the radial dimension of the fresh air module. Furthermore, the waste air supply duct is located within the installation space enclosed by the upper and lower shells, which improves the compactness of the fresh air module and further reduces its overall size.

[0008] Optionally, the first straight pipe section is a horizontal pipe section, and the second straight pipe section is a vertical pipe section. When the waste air flows into the first straight pipe section, and when the waste air in the second straight pipe section flows towards the second connecting port, there is no turning. This reduces the likelihood of the waste air turning at the connection between the waste air duct and the casing, which would otherwise result in high wind resistance, poor flow smoothness, and significant noise pollution. Consequently, the air delivery efficiency of the waste air duct is improved, and the noise pollution during the use of the fresh air module is reduced.

[0009] Optionally, the minimum distance between the second straight pipe section and the upper shell is S, where S ∈ [1mm, 5mm]. On the one hand, the waste air supply pipe is approximately a vertical pipe, and the waste air in the waste air inlet channel section flows into the second straight pipe section approximately directly through the first connecting port. The flow of waste air in the waste air supply pipe is smoother, the air resistance of the waste air supply pipe is smaller, and the air supply efficiency is higher. On the other hand, the distance between the second straight pipe section and the upper shell is smaller, and the compactness between the two in the front-to-back direction is higher. Correspondingly, the fresh air module is more compact and smaller in size.

[0010] Optionally, the port height of the first straight pipe section is H1, and the length of the second straight pipe section is H2, where H1 ≥ 0.5H2. The larger port size of the first straight pipe section results in a gentler turn of the polluted airflow into the second straight pipe section, thus reducing the likelihood of large eddies at the turning point affecting the smoothness of the polluted airflow and causing significant noise pollution.

[0011] Optionally, the waste air inlet section and the waste air outlet section are connected through a third connecting port, and the waste air outlet and the fresh air inlet of the fresh air module share the same opening; the fresh air outlet is located in the housing and connected to the waste air inlet section; a valve assembly is provided inside the housing, which is used to change the blocking status of the waste air inlet, the first connecting port, the second connecting port, the third connecting port, and the fresh air outlet. Since both the waste air inlet and outlet sections of the waste air channel serve as fresh air channels, the number of channels within the housing is reduced, the arrangement is simpler, the processing is more convenient, and the later maintenance cost is lower. Furthermore, the housing is smaller in size, effectively reducing the space occupied by the fresh air module inside the air conditioner. In addition, since the fresh air inlet and waste air outlet share the same opening, only one fresh air duct needs to be connected during use, resulting in a simple structure and lower installation requirements.

[0012] Optionally, the fresh air module includes a fan, a filter box, and a connecting box connected sequentially from front to back. The filter chamber inside the filter box is connected to the rear air intake of the fan. The connecting chamber inside the connecting box serves as the waste air outlet section, and the connecting chamber is connected to the filter chamber through the third connecting port. The top air outlet of the fan is connected to a pressure stabilizing cylinder. The filter chamber, the air duct inside the volute, and the pressure stabilizing chamber inside the pressure stabilizing cylinder together constitute the waste air inlet section. The fresh air outlet and the first connecting port are both located in the pressure stabilizing cylinder, the second connecting port and the waste air outlet are both located in the connecting box, and the waste air inlet is located in the filter box. This is a specific form of the housing and air-driving component, wherein the filter box can filter and purify fresh air in fresh air mode to improve the cleanliness of the fresh air entering the room; the pressure stabilizing cylinder can improve the stability of the airflow delivered by the fan, correspondingly improving the smoothness of the fresh air flowing into the room, and effectively reducing noise pollution generated during the waste air discharge process.

[0013] Optionally, the pressure stabilizing cylinder is offset rearward relative to the top air outlet. Moving the pressure stabilizing cylinder backward shortens the length of the first straight pipe section, making the waste air conveying pipe approximately consist of only the second straight pipe section. This makes the waste air conveying pipe a single vertical pipe section, ensuring communication between the top air outlet of the fan and the pressure stabilizing cylinder while reducing the air resistance of the waste air conveying pipe and improving its smooth airflow.

[0014] Optionally, the air outlet duct of the fan and the pressure stabilizing cylinder are connected by a transition cylinder, which is inclined from bottom to top and backward. The transition cylinder connects the air outlet duct and the pressure stabilizing cylinder, and the relative vertical position of the pressure stabilizing cylinder and the air outlet duct is no longer restricted. That is, the pressure stabilizing cylinder can be moved backward as needed, and the transition cylinder can ensure the effective communication area between the top air outlet of the air outlet duct and the pressure stabilizing cylinder.

[0015] Optionally, the rear sidewall of the air outlet duct is inclined from bottom to top and rearward. The air outlet duct is flared from bottom to top. With the pressure stabilizing cylinder moved back, the communication area between the top air outlet of the air outlet duct and the pressure stabilizing cylinder is still large, which can ensure the smooth flow of fresh air or stale air from the air outlet duct to the pressure stabilizing cylinder.

[0016] The present invention also provides an air conditioner including the aforementioned fresh air module. The waste air duct of this fresh air module is externally located, and its internal casing has fewer channels and lower layout complexity, resulting in a smaller casing volume. This effectively improves the ease of manufacturing the fresh air module and reduces its subsequent maintenance costs. Furthermore, the waste air duct in this fresh air module has low air resistance and high air delivery efficiency, resulting in high efficiency in delivering waste air to the fresh air module and the air conditioner, while also minimizing noise pollution during operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 An isometric view of the first form of the fresh air module provided by this invention;

[0019] Figure 2 for Figure 1 Cross-sectional view of the fresh air module;

[0020] Figure 3 A cross-sectional view of the fresh air module provided by the present invention in the second form, wherein the rear side plate of the air outlet duct of the fan is inclined backward;

[0021] Figure 4 The cross-sectional view of the fresh air module provided by the present invention in the third form, wherein the pressure stabilizing cylinder and the fan outlet cylinder are connected by a transition cylinder;

[0022] Figure 5 The first view is a cross-sectional view of the fresh air module provided by the present invention in the fourth form, wherein the waste air supply pipe is in the form of a straight pipe.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100 - Housing; 111 - Fresh air inlet; 112 - Fresh air outlet; 113 - Stale air inlet; 114 - First connecting port; 115 - Second connecting port; 116 - Stale air outlet; 117 - Stale air inlet channel section; 118 - Stale air outlet channel section; 119 - Third connecting port; 120 - Upper housing; 130 - Lower housing; 140 - Installation space; 200 - Stale air conveyor Pipe; 210-First straight pipe section; 220-Second straight pipe section; 230-Anti-vortex chamfer; 300-Fan; 310-Voltage casing; 311-Outlet duct; 312-Top outlet; 313-Rear air intake; 320-Impeller; 330-Motor; 400-Filter box; 500-Connecting box; 510-Connector; 600-Pressure stabilizing cylinder; 700-Transition cylinder; 800-Fresh air duct. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] This embodiment provides a fresh air module, such as Figures 1-3 As shown, the device includes a housing 100 and a waste air duct 200 disposed outside the housing 100. The housing 100 is provided with a waste air inlet 113, a first connecting port 114, a second connecting port 115, and a waste air outlet 116. A waste air inlet channel section 117 is formed between the waste air inlet 113 and the first connecting port 114, and a waste air outlet channel section 118 is formed between the second connecting port 115 and the waste air outlet 116. The waste air duct 200 includes a first straight pipe section 210 and a second straight pipe section 220 that are connected. The port of the first straight pipe section 210 is directly connected to the first connecting port 114, and the port of the second straight pipe section 220 is directly connected to the second connecting port 115.

[0027] The fresh air module provided in this embodiment includes a housing 100 that forms an internal airflow channel, and a stale air duct 200 externally connected to the stale air duct section inside the housing 100 to form a stale air duct. In use, the stale air outlet 116 extends outdoors through a duct and connects to the outdoor environment, while the stale air inlet 113 connects to the indoor environment. When it is necessary to exhaust indoor stale air outdoors, the fresh air module enters exhaust mode. The stale air inlet section 117, the stale air duct 200, and the stale air outlet section 118 connect to form a stale air duct, and the stale air duct is in a connected state. Indoor stale air flows into the stale air duct through the stale air inlet 113, and is then exhausted outdoors through the stale air outlet 116 and the corresponding duct, thereby achieving the exhaust of indoor stale air.

[0028] The wastewater duct 200 includes a first straight pipe section 210 and a second straight pipe section 220. The port of the first straight pipe section 210 facing away from the second straight pipe section 220 is directly connected to a first connecting port 114, meaning there are no other connecting sections between the first straight pipe section 210 and the first connecting port 114. Wastewater in the wastewater inlet channel section 117 can flow directly into the first straight pipe section 210 through the first connecting port 114. Similarly, the port of the second straight pipe section 220 facing away from the first straight pipe section 210 is directly connected to a second connecting port 115, meaning there are no other connecting sections between the second straight pipe section 220 and the second connecting port 115. The polluted air in pipe section 220 can flow directly into the polluted air outlet section 118 through the second connecting port 115. The first straight pipe section 210 and the second straight pipe section 220 can be set at an angle or in a straight line. During the process of the polluted air flowing along the polluted air conveying pipe 200 between the first connecting port 114 and the second connecting port 115, there will be at most one turn at the connection between the first straight pipe section 210 and the second straight pipe section 220. Correspondingly, the air resistance of the polluted air conveying pipe 200 is small, the air conveying efficiency of the polluted air is high, the smoothness of the polluted air flowing through the polluted air conveying pipe 200 is high, and the noise pollution generated is small, thereby reducing the air resistance of the polluted air channel and improving the air conveying efficiency of the polluted air channel.

[0029] Furthermore, in the fresh air module of this embodiment, the waste air duct 200 is placed outside the housing 100, which can effectively reduce the number and complexity of the internal channels of the housing 100, thereby improving the ease of processing of the housing 100 and the ease of maintenance of the waste air duct, thereby improving the ease of processing of the fresh air module and reducing the later maintenance cost of the fresh air module.

[0030] Optionally, in this embodiment, as Figure 3As shown, the housing 100 includes an upper housing portion 120 and a lower housing portion 130. Along the front-to-back direction, the top region of the lower housing portion 130 includes a front arrangement area and a rear arrangement area. The upper housing portion 120 connects to the front arrangement area of ​​the lower housing portion 130, and the upper housing portion 120 and the rear arrangement area form an installation space 140. A first connecting port 114 is located on the rear side wall of the upper housing portion 120, and a second connecting port 115 is located in the rear arrangement area of ​​the lower housing portion 130. The waste air duct 200 is located in the installation space 140. The upper housing portion 120 and the lower housing portion 130 of the housing 100 are arranged vertically, which can fully utilize the space in the height direction inside the air conditioner. This reduces the problem of the housing 100 being arranged only horizontally, resulting in a large front-to-back and left-to-right dimension, which in turn leads to a large radial dimension in the lower region of the air conditioner, resulting in a large space occupied by the air conditioner and poor shape regularity. In addition, the waste air duct 200 is installed in the installation space 140 formed by the upper shell 120 and the lower shell 130, which can make full use of the space above the rear arrangement area of ​​the lower shell 130, thereby further improving the compactness of the fresh air module and reducing the occurrence of the situation where the waste air duct 200 protrudes backward, resulting in a large radial dimension of the fresh air module.

[0031] It should be noted that the directional limitations of "front" and "back" in the text are only based on... Figure 1 The mid-angle view is used as a reference and is not used as a limitation on the actual location of the fresh air module.

[0032] Specifically, in this embodiment, as Figure 2 and Figure 3 As shown, the first straight pipe section 210 is a horizontal pipe section, and the second straight pipe section 220 is a vertical pipe section. The first connecting port 114 is located on the rear side wall of the upper shell 120, and its axis extends approximately horizontally. Therefore, the axis of the first straight pipe section 210 is collinear or parallel to the axis of the first connecting port 114. When the polluted air in the polluted air inlet channel section 117 flows through the first connecting port 114, the flow direction of the polluted air is consistent with the axial direction of the first connecting port 114. Therefore, the flow direction of the polluted air flowing from the polluted air inlet channel section 117 into the first straight pipe section 210 is also consistent with the axial direction of the first straight pipe section 210, and the polluted air does not change direction when flowing into the first straight pipe section 210. Similarly, the second connecting port 115 is provided with... In the rear arrangement area of ​​the lower shell 130, the axis of the second connecting port 115 extends approximately vertically. Therefore, the axis of the second straight pipe section 220 is collinear or parallel to the axis of the second connecting port 115. When the sewage air in the second straight pipe section 220 flows to the second connecting port 115, it does not turn. This reduces the occurrence of sewage air turning when it passes through the connection between the sewage air supply pipe 200 and the shell 100, which would otherwise result in greater wind resistance, poor sewage air flow, and significant noise pollution. Consequently, the air supply efficiency of the sewage air channel is improved, and the noise pollution during the use of the fresh air module is reduced.

[0033] Of course, in addition to the above-mentioned bending forms, the first straight pipe section 210 and the second straight pipe section 220 may also adopt other forms, such as... Figure 5 As shown, the waste air conveying pipe 200 can also be in the form of a straight pipe. Then the first straight pipe section 210 and the second straight pipe section 220 are two sections of the pipe body in the length direction of the waste air conveying pipe 200. The waste air does not need to turn during the flow of the waste air conveying pipe 200. The waste air conveying pipe 200 has high air conveying efficiency and low noise pollution generated during the air conveying process.

[0034] Specifically, in this embodiment, as Figure 2 As shown, the minimum distance between the second straight pipe section 220 and the upper shell 120 is S, where S∈[1mm,5mm]. The first straight pipe section 210 is connected between the first connecting port 114 and the top of the second straight pipe section 220. The first connecting port 114 is opened on the rear side wall of the upper shell 120. The minimum distance S between the second straight pipe section 220 and the upper shell 120 is [1mm, 5mm]. On the one hand, the distance between the second straight pipe section 220 and the upper shell 120 is small, and the compactness between the two in the front-to-back direction is higher. Correspondingly, the fresh air module is more compact and smaller in volume. On the other hand, the length of the first straight pipe section 210 is also less related to S. The sewage air supply pipe 200 is approximately a vertical pipe. The sewage air in the sewage air inlet channel section 117 flows into the second straight pipe section 220 approximately directly through the first connecting port 114. The flow of sewage air in the sewage air supply pipe 200 is smoother, the air resistance of the sewage air supply pipe 200 is smaller, and the air supply efficiency is higher.

[0035] Optionally, in this embodiment, as Figure 2 As shown, the port height of the first straight pipe section 210 is H1, and the length of the second straight pipe section 220 is H2, where H1 ≥ 0.5H2. The first straight pipe section 210 is located in front of the second straight pipe section 220, and the rear port of the first straight pipe section 210 is connected to the port of the front sidewall of the second straight pipe section 220. The port size of the first straight pipe section 210 is relatively large, and the turning degree of the polluted air flowing into the first straight pipe section 210 towards the second straight pipe section 220 is relatively gentle. This reduces the possibility of large eddies generated at the turning point of the polluted air, which affect the smoothness of the polluted air flow and generate large noise pollution. Correspondingly, the air conveying efficiency of the polluted air conveying pipe 200 is higher, and the noise pollution generated during the air conveying process is smaller.

[0036] Specifically, in this embodiment, as Figure 1 As shown, the waste air duct 200 can be a rectangular tube. The waste air duct 200 is a regular rectangular tube, which makes it easy to process and ensures processing accuracy. Correspondingly, the relative position accuracy and connection sealing of the waste air duct 200 and the housing 100 are both high, thereby improving the positional accuracy of the fresh air module installed in the air conditioner.

[0037] Optionally, in this embodiment, as Figures 1-3As shown, the corner of the wastewater duct 200 is provided with an anti-vortex chamfer 230. The anti-vortex chamfer 230 further reduces the bend at the corner of the wastewater duct 200, thereby improving the smoothness of airflow when it turns at the corner and reducing the occurrence of vortices that cause airflow obstruction and generate significant noise. Specifically, the anti-vortex chamfer 230 can be a straight line or an arc.

[0038] In this embodiment, the waste air inlet channel section 117 and the waste air outlet channel section 118 are connected through the third connecting port 119, and the waste air outlet 116 and the fresh air inlet 111 of the fresh air module are the same opening; the fresh air outlet 112 is located in the housing 100 and is connected to the waste air inlet channel section 117; a valve assembly is provided inside the housing 100, which is used to change the blocking state of the waste air inlet 113, the first connecting port 114, the second connecting port 115, the third connecting port 119 and the fresh air outlet 112. This is a specific configuration of the fresh air duct, the stale air inlet duct section 117, and the stale air outlet duct section 118 within the housing 100. The fresh air inlet 111 (which also serves as the stale air outlet 116) can be in an open state, or its blocking state can be changed as needed via a valve assembly. In fresh air mode, the valve assembly blocks the stale air inlet 113, the first connecting port 114, and the second connecting port 115, while opening the third connecting port 119 and the fresh air outlet 112. Simultaneously, the fresh air inlet 111 is in an open state, thus connecting the stale air outlet duct section 118 with the stale air inlet duct section 117 to form a fresh air duct. The fresh air flow direction is as follows... Figure 2 and Figure 5 As indicated by the middle arrow, the air drive unit drives outdoor fresh air through the duct and fresh air inlet 111 into the waste air outlet section 118, then through the third connecting port 119 into the waste air inlet section 117, and finally through the fresh air outlet 112 into the room, completing the replenishment of indoor fresh air. In exhaust mode, the valve assembly blocks the third connecting port 119 and the fresh air outlet 112, and opens the first connecting port 114, the second connecting port 115 and the waste air inlet 113. At the same time, the waste air outlet 116 is in the open state. Then, the waste air inlet section 117, the waste air duct 200 and the waste air outlet section 118 are connected to form a waste air channel, and the waste air flows as follows. Figure 3 and Figure 4 As indicated by the middle arrow, the air drive unit drives the indoor polluted air to flow into the polluted air inlet section 117 through the polluted air inlet 113, then into the polluted air duct 200 through the first connecting port 114, and then into the polluted air outlet section 118 through the second connecting port 115. Finally, it is discharged to the outside through the polluted air outlet 116 and the duct, thus completing the discharge of indoor polluted air.

[0039] The internal channels of the housing 100 are configured as described above. On the one hand, only a waste air inlet channel section 117 and a waste air outlet channel section 118 need to be set inside the housing 100. When the two waste air channels are connected by the third connecting port 119, they are used as fresh air channels. When the two waste air channels are connected by the first connecting port 114, the waste air duct 200, and the second connecting port 115, they are used as waste air channels. This greatly simplifies the number and arrangement of channels inside the housing 100, and correspondingly reduces the volume of the housing 100 and the fresh air module, thereby improving the convenience of transporting the fresh air module and reducing the space occupied by the fresh air module inside the air conditioner. In addition, it can further improve the ease of processing the housing 100 and reduce the later maintenance cost of the fresh air module. On the other hand, since part of the waste air channel also serves as a fresh air channel, the fresh air module can use a single air drive component to drive the airflow of both the fresh air channel and the waste air channel, thereby further reducing the volume of the housing 100 and the fresh air module and effectively reducing its cost. On the other hand, since the fresh air inlet 111 and the waste air outlet 116 are the same opening, only one fresh air duct 800 needs to be connected to this opening and extended to the outside to realize the input of fresh air and the exhaust of waste air. Correspondingly, only one through hole needs to be opened in the wall for the fresh air duct 800 to extend out, thereby further simplifying the structure of the fresh air module, improving the ease of use of the air conditioner, and reducing the damage to the wall caused by the use of the air conditioner.

[0040] Of course, in other embodiments, the fresh air duct and the stale air duct can also be two relatively independent ducts, and there can be two air driving components, one of which is used to drive the fresh air flow in the fresh air duct, and the other is used to drive the stale air flow in the stale air duct.

[0041] Specifically, the valve assembly can be configured as multiple individual valves or valves that are interconnected, as long as they can achieve the switching between the fresh air mode and the exhaust air mode.

[0042] Specifically, in this embodiment, as Figures 1-5As shown, the fresh air module includes a fan 300, a filter box 400, and a connecting box 500 connected sequentially from front to back. The filter chamber in the filter box 400 is connected to the rear air intake 313 of the fan 300. The connecting chamber in the connecting box 500 serves as the waste air outlet section 118, and the connecting chamber and the filter chamber are connected through a third connecting port 119. The top air outlet 312 of the fan 300 is connected to a pressure stabilizing cylinder 600. The air duct inside the filter chamber, the volute 310, and the pressure stabilizing chamber inside the pressure stabilizing cylinder 600 together constitute the waste air inlet section 117. The fresh air outlet 112 and the first connecting port 114 are both located in the pressure stabilizing cylinder 600, the second connecting port 115 and the waste air outlet 116 are both located in the connecting box 500, and the waste air inlet 113 is located in the filter box 400. This is a specific form of the housing 100 and the air drive component. The housing 100 is composed of the connecting box 500, the filter box 400, the volute 310 of the fan 300, and the pressure stabilizing cylinder 600. The impeller 320 and the motor 330 inside the fan 300 serve as the air drive component. The working principle of this type of fresh air module in entering the fresh air mode and the exhaust mode is the same as above, and will not be repeated here.

[0043] In the fresh air mode, the fresh air flowing through the filter chamber needs to be filtered by the internal filter element, thereby improving the cleanliness of the fresh air entering the room and reducing the occurrence of secondary pollution of the indoor environment. Preferably, the waste air inlet 113 is located downstream of the filter element. In the exhaust mode, the waste air entering the filter chamber does not need to be filtered by the filter element and flows directly into the volute 310 and is then discharged outdoors. This reduces the impact of ineffective filtration of waste air by the filter element on its service life and the resistance formed by the filter element to the flow of waste air, thereby improving the air delivery efficiency of the fresh air module to waste air and extending the service life of the filter element. The cross-sectional area of ​​the inner cavity of the pressure stabilizing cylinder 600 is larger than the flow area of ​​the air outlet duct 311 of the fan 300. Therefore, the fresh air or stale air delivered by the fan 300 to the pressure stabilizing cylinder 600 through the air outlet duct 311 can flow steadily within the pressure stabilizing cylinder 600. This allows the fresh air to flow smoothly and stably into the room through the fresh air outlet 112 or into the stale air duct 200 through the first connecting port 114, thereby improving the comfort level of the fresh air flowing into the room and effectively reducing the noise pollution generated during the stale air discharge process.

[0044] Better, such as Figure 1 and Figure 2 As shown, the rear side wall of the connecting box 500 may be provided with a connector 510. The inner hole of the connector 510 serves as both a fresh air inlet 111 and a waste air outlet 116. The fresh air duct 800 is connected through the connector 510 to improve the ease of connection between the fresh air duct 800 and the connecting box 500.

[0045] Specifically, in this embodiment, as Figure 2As shown, the pressure stabilizing cylinder 600 can be offset rearward relative to the top air outlet 312. The pressure stabilizing cylinder 600 is moved back to shorten the length of the first straight pipe section 210, so that the waste air conveying pipe 200 approximately consists only of the second straight pipe section 220. The waste air conveying pipe 200 is a vertical pipe section. While ensuring that the top air outlet 312 of the fan 300 is connected to the pressure stabilizing cylinder 600, the air resistance of the waste air conveying pipe 200 is reduced and the air conveying smoothness of the waste air conveying pipe 200 is improved.

[0046] Better, such as Figure 4 As shown, the air outlet duct 311 of the fan 300 and the pressure stabilizing cylinder 600 can be connected by a transition cylinder 700, which is inclined from bottom to top and backward. The fan 300 is positioned relatively forward, and the transition cylinder 700 connects the air outlet duct 311 and the pressure stabilizing cylinder 600. The relative vertical position of the pressure stabilizing cylinder 600 and the air outlet duct 311 is no longer restricted, meaning that the pressure stabilizing cylinder 600 can be moved backward as needed. The transition cylinder 700 can ensure the effective communication area between the top air outlet 312 of the air outlet duct 311 and the pressure stabilizing cylinder 600, and correspondingly ensure the efficiency of the fan 300 in delivering fresh air or stale air to the pressure stabilizing cylinder 600.

[0047] In addition to using the aforementioned transition cylinder 700, such as Figure 3 As shown, the rear side wall of the air outlet duct 311 of the fan 300 can also be inclined from bottom to top and backward. In this case, the air outlet duct 311 is flared from bottom to top. Based on the rearward movement of the pressure stabilizing cylinder 600, the communication area between the top air outlet 312 of the air outlet duct 311 and the pressure stabilizing cylinder 600 is still large, which can ensure the smooth flow of fresh air or stale air from the air outlet duct 311 to the pressure stabilizing cylinder 600.

[0048] This embodiment also provides an air conditioner including the aforementioned fresh air module. The waste air duct 200 of this fresh air module is externally located, and the number of internal channels in its housing 100 is small, resulting in low layout complexity and a smaller housing volume. This improves the ease of manufacturing the fresh air module and reduces its subsequent maintenance costs. Furthermore, the waste air duct 200 in this fresh air module has low wind resistance and high air delivery efficiency, resulting in high air delivery efficiency for waste air in both the fresh air module and the air conditioner, and also reduces noise pollution during operation.

[0049] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fresh air module, characterized in that, The device includes a housing (100) and a waste air duct (200) disposed outside the housing (100). The housing (100) is provided with a waste air inlet (113), a first connecting port (114), a second connecting port (115), and a waste air outlet (116). A waste air inlet channel section (117) is formed between the waste air inlet (113) and the first connecting port (114), and a waste air outlet channel section (118) is formed between the second connecting port (115) and the waste air outlet (116). The waste air conveying pipe (200) includes a first straight pipe section (210) and a second straight pipe section (220) connected together. The port of the first straight pipe section (210) is directly connected to the first connecting port (114), and the port of the second straight pipe section (220) is directly connected to the second connecting port (115). The waste air inlet channel section (117) and the waste air outlet channel section (118) are connected through the third connecting port (119). The waste air outlet (116) and the fresh air inlet (111) of the fresh air module are the same opening. The fresh air outlet (112) of the fresh air module is located in the housing (100) and is connected to the waste air inlet channel section (117). A valve assembly is provided in the housing (100). The valve assembly is used to change the blocking state of the waste air inlet (113), the first connecting port (114), the second connecting port (115), the third connecting port (119) and the fresh air outlet (112).

2. The fresh air module according to claim 1, characterized in that, The housing (100) includes an upper shell portion (120) and a lower shell portion (130). Along the front-rear direction, the top region of the lower shell portion (130) includes a front arrangement area and a rear arrangement area. The upper shell portion (120) is connected to the front arrangement area of ​​the lower shell portion (130). The first communication port (114) is located on the rear sidewall of the upper shell portion (120), and the second communication port (115) is located in the rear arrangement area of ​​the lower shell portion (130).

3. The fresh air module according to claim 2, characterized in that, The first straight pipe section (210) is a horizontal pipe section, and the second straight pipe section (220) is a vertical pipe section.

4. The fresh air module according to claim 3, characterized in that, The minimum distance between the second straight pipe section (220) and the upper shell (120) is S, where S∈[1mm,5mm].

5. The fresh air module according to claim 3, characterized in that, The port height of the first straight pipe section (210) is H1, and the length of the second straight pipe section (220) is H2, where H1 ≥ 0.5H2.

6. The fresh air module according to claim 1, characterized in that, The fresh air module includes a fan (300), a filter box (400), and a connecting box (500) connected sequentially from front to back. The filter chamber in the filter box (400) is connected to the rear air intake (313) of the fan (300). The connecting chamber in the connecting box (500) serves as the waste air outlet channel section (118), and the connecting chamber is connected to the filter chamber through the third connecting port (119). The top air outlet (312) of the fan (300) is connected to a pressure stabilizing cylinder (600). The fresh air outlet (112) and the first connecting port (114) are both located in the pressure stabilizing cylinder (600), the second connecting port (115) and the sewage air outlet (116) are both located in the connecting box (500), and the sewage air inlet (113) is located in the filter box (400).

7. The fresh air module according to claim 6, characterized in that, The pressure stabilizing cylinder (600) is eccentrically positioned to the rear relative to the top air outlet (312).

8. The fresh air module according to claim 7, characterized in that, The air outlet duct (311) of the fan (300) is connected to the pressure stabilizing cylinder (600) through a transition cylinder (700), which is inclined from bottom to top and backward. Alternatively, the rear side wall of the air outlet duct (311) of the fan (300) is inclined from bottom to top and then backward.

9. An air conditioner, characterized in that, Includes the fresh air module as described in any one of claims 1-8.

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