Fan-coil return air box assembly

Abstract

The application relates to the air conditioning technical field, and particularly provides a fan coil unit return air box assembly. The fan coil unit return air box assembly of the application comprises a purification module, a return air box body and a fastening assembly, the return air box body is provided with a return air cavity and a return air port, the return air cavity is communicated with the outside of the return air cavity through the return air port, the purification module is arranged at the return air port, and the fastening assembly can connect the return air box body and the purification module, so that the purification module is fastened to the return air port along the depth direction of the return air cavity. In the prior art, the purification module is fixed through a sheet metal frame, at this time, the setting of the sheet metal frame increases the overall cost, in order to reduce the cost, the sheet metal frame is replaced by the fastening assembly to fix the purification module to the return air box body.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, specifically providing a fan coil unit return air box assembly. Background Technology

[0002] In existing fan coil unit return air boxes, when no ductwork is required at the return air inlet, a purification module is typically installed at the return air inlet to purify the return air. Usually, the purification module is fixed in place using a sheet metal frame, which significantly increases the installation cost of the purification module within the fan coil unit return air box. Summary of the Invention

[0003] This application aims to solve the aforementioned technical problem, namely, to address the high installation cost of installing purification modules at the return air inlet of fan coil unit return air boxes in the prior art.

[0004] This application provides a fan coil unit return air box assembly, including: a purification module; a return air box body, the return air box body being provided with a return air cavity and a return air inlet, the return air cavity being connected to the return air inlet, and the purification module being able to extend into the return air inlet; and a fastening assembly connecting the return air box body and the purification module, so that the purification module is fastened to the return air inlet along the depth direction of the return air cavity.

[0005] In the optional technical solution of the above-mentioned fan coil unit return air box assembly, the fastening assembly includes a limiting member, a portion of which is connected to the return air box body, and at least a portion of which abuts against the purification module along the depth direction of the return air cavity, so that the limiting member fixes the purification module to the return air inlet along the depth direction of the return air cavity.

[0006] In the optional technical solution of the above-mentioned fan coil unit return air box assembly, the limiting member includes a main board, a first limiting plate and a second limiting plate spaced at both ends of the main board along the length direction of the main board, the length direction of the main board is in the same direction as the depth direction of the return air cavity, the second limiting plate extends into the return air cavity and abuts against the inner wall of the return air cavity along the depth direction of the return air cavity, and the purification module is disposed between the first limiting plate and the second limiting plate.

[0007] In the optional technical solution of the above-mentioned fan coil unit return air box assembly, the return air box body further includes an extension enclosure plate, which surrounds the outer edge of the return air cavity to form the return air inlet. The purification module extends into the extension enclosure plate, and at least one end face of the purification module abuts against the inner side of the extension enclosure plate. The limiting member further includes a third limiting plate and a fourth limiting plate, which are spaced apart at both ends of the main board along the height direction of the main board. The third limiting plate and the fourth limiting plate abut against two opposite inner sides of the extension enclosure plate, respectively.

[0008] In the optional technical solution of the above-mentioned fan coil unit return air box assembly, the extended enclosure includes a first extended plate and a second extended plate disposed opposite to each other, a third limiting plate abutting against the first extended plate, a fourth limiting plate abutting against the second extended plate, and the limiting member further includes a first stop plate, the first stop plate being connected to the third limiting plate, and the first stop plate extending from the return air inlet and abutting against the first extended plate along the depth direction of the return air cavity; and / or, the limiting member further includes a second stop plate, the second stop plate being connected to the fourth limiting plate, and the second stop plate extending from the return air inlet and abutting against the second extended plate along the depth direction of the return air cavity.

[0009] In the optional technical solution of the above-mentioned fan coil unit return air box assembly, the extended enclosure further includes a third extended plate, the two ends of which are respectively connected to the first extended plate and the second extended plate. The fastening assembly further includes a first stop member, which is movably disposed on the third extended plate so that the first stop member can move to abut against the purification module. The main board and the third extended plate are respectively located at both ends of the purification module. And / or, the extended enclosure further includes one or more limiting back plates, which are disposed at one end of the extended enclosure near the return air cavity, and the limiting back plate is parallel to the second limiting plate.

[0010] In the optional technical solution of the above-mentioned fan coil unit return air box assembly, the fan coil unit return air box assembly further includes a filter screen arranged side by side with the purification module at the return air inlet. The first limiting plate and the second limiting plate are located on the first side of the main board, and the third limiting plate and the fourth limiting plate are located on the second side of the main board. The first side and the second side of the main board are opposite to each other. The first side of the main board faces the purification module, and the second side of the main board faces the filter screen. The third limiting plate and / or the fourth limiting plate are provided with a front limiting plate. The front limiting plate extends along the height direction of the main board and faces the filter screen. The limiting member also includes a rear limiting plate. The rear limiting plate is arranged on the second side of the main board, and the rear limiting plate and the second limiting plate are on the same plane. Along the depth direction of the return air cavity, the filter screen is located between the front limiting plate and the rear limiting plate.

[0011] In the optional technical solution of the above-mentioned fan coil unit return air box assembly, the fan coil unit return air box assembly further includes a wiring board, the wiring board includes a base plate and electrical contacts, the electrical contacts are disposed on the base plate for connection with a power source, the base plate is attached to the extended enclosure, the side end face of the purification module abuts against the base plate, the side end face of the purification module is provided with an electrical connection mating point, and the electrical contacts are connected to the electrical connection mating point.

[0012] In the optional technical solution of the above-mentioned fan coil unit return air box assembly, a fan volute is provided in the return air cavity, the fan volute is used to install the fan, and the fan coil unit return air box assembly also includes a pad, the pad is fixed to the fan volute, and the pad abuts against the purification module along the depth direction of the return air cavity.

[0013] In the optional technical solution of the above-mentioned fan coil unit return air box assembly, the limiting member includes an elastic member and lugs located at both ends of the elastic member. The lugs are connected to the opposite sides of the return air inlet. The elastic member is elastically stretched and abuts against the purification module along the depth direction of the return air cavity to apply a force to the purification module in the direction of the return air cavity.

[0014] By adopting the above technical solution, this application can fix the purification module at the return air inlet of the return air box by fastening components, which can reduce costs compared to fixing the purification module by sheet metal frame. Attached Figure Description

[0015] The preferred embodiments of this application are described below with reference to the accompanying drawings, in which:

[0016] Figure 1 This is a front view of the fan coil unit return air box assembly of this application;

[0017] Figure 2This is a bottom view of the fan coil unit return air box assembly of this application, showing a fastening component used to fasten the purification module.

[0018] Figure 3 yes Figure 2 A schematic diagram showing the interaction between the limiting component and the extension panel;

[0019] Figure 4 yes Figure 3 A schematic diagram of the second side of the limiting component facing the motherboard;

[0020] Figure 5 yes Figure 3 A schematic diagram of the limiting component facing the motherboard;

[0021] Figure 6 yes Figure 3 Left view of the limit component when setting the filter;

[0022] Figure 7 This is a bottom view of the fan coil unit return air box assembly of this application, which uses another fastening component to fasten the purification module.

[0023] Figure 8 yes Figure 7 A schematic diagram showing that the fan coil unit return air box assembly does not have a purification module and filter.

[0024] Figure 9 This is a schematic diagram of the power supply and terminal block connection of the fan coil unit return air box assembly of this application;

[0025] Figure 10 This is a schematic diagram of the purification module of the fan coil unit return air box assembly of this application;

[0026] Figure 11 This is a schematic diagram showing that the elastic element of the fan coil unit return air box assembly of this application is set as an elastic rope;

[0027] Figure 12 This is a schematic diagram showing that the elastic element of the fan coil unit return air box assembly of this application is set as a tension spring.

[0028] List of reference numerals in the attached diagram:

[0029] 1. Fan coil unit return air box assembly; 11. Return air box body; 110. Return air cavity; 111. Return air outlet; 112. Extension enclosure; 1121. First extension plate; 1122. Second extension plate; 1123. Third extension plate; 1124. Fourth extension plate; 1125. First limiting back plate; 1126. Second limiting back plate; 12. Purification module; 121. Electrical connection point; 122. Side end face of purification module; 13. Fastening assembly; 130. Limiting component; 131. Elastic rope; 132. Tension spring; 133. Hanging lug; 134. Pull rope; 13 5. Mainboard; 135a. First side of the mainboard; 135b. Second side of the mainboard; 1351. First limiting plate; 1352. Second limiting plate; 1353. Third limiting plate; 1354. Fourth limiting plate; 1355. First stop plate; 1356. Second stop plate; 1357. Rear limiting plate; 1358. Front limiting plate; 136. First stop component; 137. Second stop component; 14. Fan volute; 15. Spacer block; 16. Terminal block; 161. Base plate; 162. Electrical contact; 17. Filter screen; 18. Power supply; 181. Output wire. Detailed Implementation

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description relating to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The terms “first,” “second,” “third,” “fourth,” and similar words used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. “A plurality of” means two or more.

[0031] Unless otherwise stated, the orientation or positional relationship indicated by "upper", "lower", "top", "bottom", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Furthermore, "connection" should be interpreted broadly; for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] It should also be noted that the z-direction is the depth direction of the mounting cavity, which is also the vertical direction and the length direction of the motherboard 135. The arrow in the z-direction points upwards, and the opposite direction of the arrow in the z-direction points downwards. The y-direction is the height direction of the motherboard 135. The x-direction is the extension direction of the filter 17 and the purification module 12 at the return air vent 111. At the same time, the arrow in the x-direction points to the right, and the opposite direction of the arrow in the x-direction points to the left.

[0034] refer to Figures 1 to 11 This application provides a fan coil unit return air box assembly 1, including a purification module 12, a return air box body 11, and a fastening assembly 13. The return air box body 11 is provided with a return air cavity 110 and a return air inlet 111. The return air cavity 110 is connected to the return air inlet 111, and the return air cavity 110 is connected to the outside of the return air cavity 110 through the return air inlet 111. The purification module 12 extends into the return air inlet 111. The fastening assembly 13 can connect the return air box body 11 and the purification module 12 so that the purification module 12 is fastened to the return air inlet 111 along the depth direction of the return air cavity 110, i.e., the z-direction. The fan coil unit return air box assembly 1 is installed along the z-axis, with the return air inlet 111 facing downwards. The fan coil unit return air box assembly 1 returns air to the return air cavity 110 through the return air inlet 111. Since a purification module 12 is installed at the return air inlet 111, the external air is purified by the purification module 12 and flows from the return air inlet 111 to the return air cavity 110. In the prior art, the purification module 12 is fixed by a sheet metal frame. However, the installation of the sheet metal frame increases the installation cost. To reduce costs, a fastening assembly 13 is used to replace the sheet metal frame, thereby fixing the purification module 12 to the return air box 11 and extending it into the return air inlet 111.

[0035] In some embodiments, reference Figure 2 and Figure 7 The fastening assembly 13 includes a limiting member 130. A portion of the limiting member 130 is connected to the return air housing 11, and at least a portion of the limiting member 130 abuts against the purification module 12 along the depth direction (z-direction) of the return air cavity 110, thereby fixing the purification module 12 to the return air outlet 111 along the depth direction of the return air cavity 110. By connecting the limiting member 130 to both the return air housing 11 and directly abutting against the purification module 12 along the z-direction, it is ensured that the limiting member 130 directly limits and abuts against the purification module 12, thus ensuring that the purification module 12 is stably positioned at the return air outlet 111.

[0036] It should be noted that the fastening component 13 can directly abut and limit the purification module 12 along the z-direction via the limiting member 130. Of course, the fastening component 13 may also not directly abut against the purification module 12 along the z-direction, but may connect to the side end face 122 of the purification module 12 to restrict the downward movement of the purification module 12. The above is not restrictive and can be configured according to the needs of those skilled in the art.

[0037] In some embodiments, combined with Figures 1 to 3 The limiting component 130 includes a main board 135, a first limiting plate 1351 and a second limiting plate 1352 spaced at both ends of the main board 135 along its length direction (Z-direction). The length direction of the main board 135 is in the same direction as the depth direction of the return air cavity 110 (Z-direction). The second limiting plate 1352 extends into the return air cavity 110 and abuts against the inner wall of the return air cavity 110 along its depth direction. The purification module 12 is disposed between the first limiting plate 1351 and the second limiting plate 1352. Since the return air outlet 111 is oriented downwards (opposite to the Z-direction arrow), extending the second limiting plate 1352 into the return air cavity 110 and abutting against the inner wall of the return air cavity 110 ensures the limiting component 130 is properly positioned with the return air housing 11, preventing the limiting component from detaching from the return air housing 11. Since the first limiting member 130 and the second limiting member 130 are spaced apart along the z-direction, and the purification module 12 is located between the first limiting plate 1351 and the second limiting plate 1352, when the purification module 12 is positioned downwards at the return air vent 111, the first limiting plate 1351 can abut against the purification module 12 and apply an upward force to the purification module 12, thereby supporting the purification module 12 and limiting it at the return air vent 111. The limiting member 130 has a simple structure, thus effectively limiting the purification module 12 at the return air vent 111 while saving costs.

[0038] In some embodiments, combined with Figures 2 to 5The return air housing 11 also includes an extension panel 112, which surrounds the outer edge of the return air cavity 110 to form a return air inlet 111. The purification module 12 extends into the extension panel 112, and at least one end face of the purification module 12 abuts against the inner side of the extension panel 112. The limiting member 130 also includes a third limiting plate 1353 and a fourth limiting plate 1354, which are spaced apart at both ends of the main board 135 along the height direction (y-direction) of the main board 135. The third limiting plate 1353 and the fourth limiting plate 1354 abut against two opposite inner sides of the extension panel 112, respectively. The abutment of the third limiting plate 1353 and the fourth limiting plate 1354 against two opposite inner sides of the extension panel 112 can prevent the limiting member 130 from shaking when installed on the extension panel 112. In addition, the third limiting plate 1353 and the fourth limiting plate 1354 can increase the contact area between the limiting member 130 and the extension enclosure 112, thereby further ensuring the stability of the limiting member 130 installed in the return air box 11.

[0039] In the prior art, the purification module 12 is fixed to the return air box 11 by a sheet metal frame, and the sheet metal frame abuts against the end of the extension panel 112 away from the return air cavity 110. At this time, the purification module 12 is located outside the extension panel 112, and the height of the entire fan coil unit return air box assembly 1 is the sum of the height of the return air box 11, the height of the extension panel 112, and the height of the purification module 12. At this time, the height of the fan coil unit return air box assembly 1 is relatively high. Therefore, the height of the ceiling for installing the fan coil unit return air box assembly 1 also needs to be increased accordingly. In this application, the purification module 12 is extended into the extension panel 112 and the purification module 12 is fastened and installed by the fastening component 13. At this time, the height of the entire fan coil unit return air box assembly 1 is the sum of the height of the return air box 11 and the height of the purification module 12. The overall height is reduced, and correspondingly, the height of the ceiling for installing the fan coil unit return air box assembly 1 can also be reduced. Thus, while reducing the height of the fan coil unit return air box assembly 1, the installation difficulty is also reduced.

[0040] It should be noted that, in order to ensure the stability of the purification module 12 during installation, the purification module 12 can be abutted against the inner side of the extension enclosure 112 during installation. This can reduce the shaking of the purification module 12 and ensure the stability of the installation. The purification module 12 can abut against the inner side of the extension enclosure 112 through one end face. Of course, it can also abut against the inner side of the extension enclosure 112 through two or more end faces. All of the above are within the protection scope of this application.

[0041] In some embodiments, continue to combine Figures 2 to 5The extension panel 112 includes a first extension plate 1121 and a second extension plate 1122 disposed opposite to each other. A third limiting plate 1353 abuts against the first extension plate 1121, and a fourth limiting plate 1354 abuts against the second extension plate 1122. The limiting member 130 also includes a first stop plate 1355, which is connected to the third limiting plate 1353 and extends from the return air inlet 111, abutting against the first extension plate 1121 along the depth direction of the return air cavity 110, i.e., the z-direction. The limiting member 130 also includes a second stop plate 1356, which is connected to the fourth limiting plate 1354 and extends from the return air inlet 111, abutting against the second extension plate 1122 along the depth direction of the return air cavity 110, i.e., the z-direction. Since the second limiting plate 1352 abuts against the inner wall of the return air cavity 110, and the first stop plate 1355 and the second stop plate 1356 abut against the extension enclosure 112 respectively, the second limiting plate 1352, the first stop plate 1355 and the second stop plate 1356 can be limited by the extension enclosure 112 along the z direction, thereby further ensuring that the limiting member 130 and the extension enclosure 112 can be tightly installed, and preventing the limiting member 130 from coming off the extension enclosure 112.

[0042] In some embodiments, continue to combine Figures 2 to 5 The extension panel 112 also includes a third extension plate 1123, with the two ends of the third extension plate 1123 connected to the first extension plate 1121 and the second extension plate 1122, respectively. The fastening assembly 13 also includes a first stop 136, which is movably disposed on the third extension plate 1123 so that the first stop 136 can move to abut against the purification module 12. The main board 135 and the third extension plate 1123 are located at the two ends of the purification module 12, respectively. Since the purification module 12 is located between the main board 135 and the third extension plate 1123, the first limiting plate 1351 connected to the main board 135 and the first stop 136 connected to the third extension plate 1123 can limit and support the two ends of the purification module 12, thereby further ensuring the stability of the purification module 12 installed on the return air box 11 and preventing the purification module 12 from falling off from the return air vent 111 due to unilateral force.

[0043] In some embodiments, combined with Figures 2 to 6The fan coil unit return air box assembly 1 also includes a filter 17 arranged parallel to the purification module 12 at the return air inlet 111. A first limiting plate 1351 and a second limiting plate 1352 are located on the first surface 135a of the main board 135, and a third limiting plate 1353 and a fourth limiting plate 1354 are located on the second surface 135b of the main board 135. The first surface 135a and the second surface 135b of the main board 135 are opposite to each other. The first surface 135a of the main board 135 faces the purification module 12, and the second surface 135b of the main board 135 faces the filter 17. The third limiting plate 1353 and / or the fourth limiting plate 1354... The position plate 1354 is provided with a front limiting plate 1358. Taking the example where both the third limiting plate 1353 and the fourth limiting plate 1354 are provided with front limiting plates 1358, the front limiting plate 1358 extends along the height direction y of the main board 135 and faces the filter 17. The limiting member 130 also includes a rear limiting plate 1357, which is located on the second surface 135b of the main board 135. The rear limiting plate 1357 and the second limiting plate 1352 are on the same plane, along the depth direction z of the return air cavity 110. The filter 17 is located between the front limiting plate 1358 and the rear limiting plate 1357. The filter 17 can filter the return air. Placing the filter 17 and the purification module 12 side-by-side at the return air inlet 111 ensures that the return air flowing from the return air inlet 111 to the return air cavity 110 is effectively purified. At this time, the mainboard 135 serves as both a partition between the filter 17 and the purification module 12, and a limiting plate for both. Furthermore, when the filter 17, along with the return air vent 111, is positioned downwards, the front limiting plate 1358 provides upward support for the filter 17, preventing it from detaching from the return air vent 111, while the rear limiting plate 1357 prevents the filter 17 from entering the return air chamber 110. Additionally, the simultaneous limiting of the filter 17 along the z-axis by both the front and rear limiting plates ensures the stability of the filter 17 at the return air vent 111, preventing it from shaking.

[0044] It should be noted that the extended enclosure 112 also includes a fourth extended plate 1124, with its two ends connected to the first extended plate 1121 and the second extended plate 1122, respectively. The filter screen 17 is sandwiched between the fourth extended plate 1124 and the main plate 135. The fastening assembly 13 may also include a second stop 137 movably disposed on the fourth extended plate 1124, which is movable to abut against the filter screen 17. The second stop 137 can abut against the filter screen 17 along the z-direction, thus supporting the filter screen 17 along the z-direction and further preventing the filter screen 17 from falling off from the return air vent 111 when it is installed facing downwards. Since the front limiting plate 1358 and the second stop 137 are arranged at both ends of the filter screen 17 along the x-direction and provide z-direction limiting support for the filter screen 17, the support strength of the filter screen 17 can be further improved, and the filter screen 17 can be prevented from falling off from the return air vent 111 due to unilateral force.

[0045] It should also be noted that the rear limiting plate 1357 can be integrally set with the second limiting plate 1352. In this case, the rear limiting plate 1357 is the part of the second limiting plate 1352 that extends from the second side 135b of the main board 135. Of course, refer to... Figure 4 , Figure 5 The rear limiting plate 1357 can also be separately installed from the second limiting plate 1352. Furthermore, the rear limiting plate 1357 and the second limiting plate 1532 can each be configured as one or more pieces along the height direction (y) of the main board 135. The above is not restrictive and is all within the scope of protection of this application.

[0046] In some embodiments, combined with Figure 2 and Figure 3 The extension enclosure 112 also includes one or more limiting back plates. The limiting back plates are disposed at one end of the extension enclosure 112 near the return air cavity 110, and the limiting back plates are parallel to the second limiting plate 1352. Taking the setting of two limiting back plates, namely the first limiting back plate 1125 and the second limiting back plate 1126, as an example, the first limiting back plate 1125 and the first limiting plate 1351 are disposed at both ends of the purification module 12 along the x-direction and respectively abut against the purification module 12 along the z-direction. This can prevent the purification module 12 from extending into the return air cavity 110. At the same time, abutting against both ends of the purification module 12 can ensure the uniformity and stability of the force on the purification module 12. The second limiting back plate 1126 and the rear limiting plate 1357 are disposed at both ends of the filter screen 17 along the x-direction and respectively abut against the filter screen 17 along the z-direction. This can further prevent the filter screen 17 from extending into the return air cavity 110. At the same time, it can also ensure the stability of the filter screen 17 installed at the return air port 111 by abutting against both ends of the filter screen 17.

[0047] In some embodiments, reference Figure 1 , Figures 7 to 12The limiting member 130 includes an elastic member and hooks 133 located at both ends of the elastic member. Taking the elastic member as an example of an elastic rope 131, the hooks 133 are connected to the opposite sides of the return air inlet 111. The elastic rope 131 is elastically stretched and abuts against the purification module 12 along the depth direction (z-direction) of the return air cavity 110, so as to apply an upward force to the purification module 12 in the direction of the return air cavity 110. The two ends of the elastic rope 131 are hung on the return air box 11 through the hooks 133. Since the return air inlet 111 of the return air box 11 is set downward, when the purification module 12 is set at the return air inlet 111, the elastic rope 131 is set below the purification module 12, so that the elastic rope 131 can apply an upward force to the purification module 12 in the z-direction to support the purification module 12, thereby preventing the purification module 12 from moving downward under its own weight and falling off from the return air inlet 111.

[0048] It should be noted that, in combination Figure 7 and Figure 8 Similarly, taking the elastic element as an elastic rope 131 as an example, when the extension panel 112 includes a first extension plate 1121 and a second extension plate 1122 arranged opposite to each other, when the elastic rope 131 abuts and supports the purification module 12, the elastic rope 131 is arranged between the first extension plate 1121 and the second extension plate 1122 along the interval direction between the first extension plate 1121 and the second extension plate 1122. When the elastic rope 131 does not need to work, the elastic rope 131 is stretched and hung on the first extension plate 1121 or the second extension plate 1122. When the return air vent 111 is set downward, the first extension plate 1121 and the second extension plate 1122 limit the two ends of the purification module 12, and the elastic rope 131 limits and supports the middle part of the purification module 12, thereby avoiding the problem of unstable installation of the purification module 12. When the elastic cord 131 is not in use, it can be placed on the side of the first extension plate 1121 that is away from the second extension plate 1122, or on the side of the second extension plate 1122 that is away from the first extension plate 1121. This can both support the elastic cord 131 and make it convenient for the next use.

[0049] It should also be noted that the limiting member 130, including the elastic member and the hanging ear 133, can be configured as one or more sets. When configured as multiple sets, the multiple sets of limiting members 130 can be arranged side by side and spaced apart between the first extension plate 1121 and the second extension plate 1122. When the multiple sets of limiting members 130 are spaced apart between the first extension plate 1121 and the second extension plate 1122, the stability of the support for the purification module 12 can be further improved. Of course, the elastic member can also be configured to be perpendicular to the first extension plate 1121 and the second extension plate 1122. In this case, the two ends of the fastening assembly 13 can be connected to the first extension plate 1121 and the second extension plate 1122 respectively. The above is also within the protection scope of this application.

[0050] In some embodiments, reference Figure 7 When the fan coil unit return air box assembly 1 also includes a filter 17, and the limiting member 130 is an elastic member and a hanging lug 133, since the return air box 11 includes an extension enclosure 112, and the filter 17 and the purification module 12 are arranged side by side in the extension enclosure 112, the movement of the filter 17 and the purification module 12 within the return air box 11 can be restricted. The filter 17 can abut against the fourth extension plate 1124, thereby improving the stability of the filter 17 within the return air box 11. In addition, the elastic member can support the filter 17 along the z-direction, thereby preventing the filter 17 from coming off the return air port 111 when it is facing downwards.

[0051] In some embodiments, reference Figure 11 The elastic element can be set as an elastic rope 131. The elastic rope 131 has hanging ears 133 at both ends, which are used to hang it on the return air box 11, thus facilitating the removal and removal of the elastic rope 131. The elastic tension of the elastic rope 131 provides support for the purification module 12, and also saves costs. (Reference) Figure 12 Alternatively, the elastic element can be a tension spring 132. The tension spring 132 also supports the purification module 12 through elastic tension. In addition, the tension spring 132 has high durability, so its service life is long, which can also save costs.

[0052] It should be noted that when the tension spring 132 is used as an elastic element, both ends of the tension spring 132 can be directly connected to the lugs 133, and the tension spring 132 can be detachably connected to both ends of the return air box 11 through the lugs 133. Of course, the limiting member 130 may also include a pull rope 134. In this case, pull ropes 134 are provided at both ends of the tension spring 132, and lugs 133 are provided on the pull ropes 134, which are then connected to the return air box 11 through the lugs 133. The above-mentioned connection method between the tension spring 132 and the return air box 11 is not restrictive and can be set according to the needs of those skilled in the art.

[0053] In addition, the two ends of the elastic element can be fixedly mounted on the return air box 11, or they can be detachably connected to the return air box 11. All of the above are also within the protection scope of this application.

[0054] In some embodiments, reference Figure 2 , Figures 7 to 9The fan coil unit return air box assembly 1 also includes a wiring board 16, which includes a base plate 161 and electrical contacts 162. The electrical contacts 162 are disposed on the base plate 161 and are used for electrical connection with the power supply 18. The base plate 161 is fixed to the edge of the return air inlet 111. At the same time, the base plate 161 is located inside the extension enclosure 112 and abuts against the third extension plate 1123. The side end face 122 of the purification module 12 abuts against the base plate 161. The side end face 122 of the purification module 12 is provided with an electrical connection mating point 121, and the electrical contacts 162 are connected to the electrical connection mating point 121. The third extension plate 1123 can support the base plate 161 and can also restrict the movement of the base plate 161 through the cooperation of the first extension plate 1121, the second extension plate 1122 and the third extension plate 1123, thereby ensuring the stability of the base plate 161 installation. The electrical contact 121 of the purification module 12 is directly connected to the electrical contact 162 on the base plate 161, which makes the installation of the purification module 12 and the terminal block 16 more compact.

[0055] In some embodiments, reference Figure 2 , Figures 7 to 9 The fan coil unit return air box assembly 1 also includes a power supply 18, which is located on the side of the return air box 11 near the terminal block 16. The power supply 18 is electrically connected to the electrical contact 162 to supply power to the purification module 12. The power supply 18 is electrically connected to the electrical contact 162 via an output wire 181. The location of the power supply 18 near the terminal block 16 reduces the length of the output wire 181, thereby saving costs and also reducing the space occupied by the output wire 181 on the return air box 11.

[0056] In some embodiments, reference Figure 9 Electrical contact 162 is configured as an elastic sheet, and the elastic sheet is made of stainless steel. Electrical contact 162 can achieve conductivity, and the stainless steel elastic sheet can achieve better conductivity.

[0057] In some embodiments, the substrate 161 is provided with an insulating material to prevent the substrate 161 from becoming conductive.

[0058] In some embodiments, combined with Figure 7 and Figure 8 A fan housing 14 is installed inside the return air cavity 110. The fan housing 14 is used to install the fan. The fan coil unit return air box assembly 1 also includes a pad 15, which is fixed to the fan housing 14. The pad 15 and the purification module 12 abut against each other along the depth direction (z-direction) of the return air cavity 110. To further ensure the installation stability of the purification module 12, a pad 15 is provided between the fan housing 14 and the purification module 12. The purification module 12 rests against the fan housing 14 through the pad 15. In addition, the pad 15 also provides vibration damping for the purification module 12.

[0059] It should be noted that the pad 15 can be made of rubber to provide shock absorption. In addition, to ensure that the pad 15 is stably mounted on the fan volute 14, an adhesive backing can be applied to the pad 15 to adhere it to the fan volute 14.

[0060] It should be noted that the fan coil unit return air box assembly 1 of this application can be applied in the field of air conditioning, as part of an air conditioning system.

[0061] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A fan coil unit return air box assembly, characterized in that, include: Purification module; The return air box is provided with a return air cavity and a return air inlet. The return air cavity is connected to the return air inlet, and the purification module can extend into the return air inlet. A fastening assembly connects the return air housing and the purification module, so that the purification module is fastened to the return air inlet along the depth direction of the return air cavity.

2. The fan coil unit return air box assembly according to claim 1, characterized in that, The fastening assembly includes a limiting member, a portion of which is connected to the return air housing, and at least a portion of which abuts against the purification module along the depth direction of the return air cavity, so that the limiting member fixes the purification module to the return air inlet along the depth direction of the return air cavity.

3. The fan coil unit return air box assembly according to claim 2, characterized in that, The limiting component includes a main board, a first limiting plate and a second limiting plate spaced at both ends of the main board along its length direction. The length direction of the main board is in the same direction as the depth direction of the return air cavity. The second limiting plate extends into the return air cavity and abuts against the inner wall of the return air cavity along its depth direction. The purification module is disposed between the first limiting plate and the second limiting plate.

4. The fan coil unit return air box assembly according to claim 3, characterized in that, The return air housing also includes an extension panel that surrounds the outer edge of the return air chamber to form the return air inlet. The purification module extends into the extension panel, and at least one end face of the purification module abuts against the inner side of the extension panel. The limiting component further includes a third limiting plate and a fourth limiting plate, which are spaced apart at both ends of the main board along the height direction of the main board. The third limiting plate and the fourth limiting plate abut against two opposite inner sides of the extended enclosure, respectively.

5. The fan coil unit return air box assembly according to claim 4, characterized in that, The extended enclosure includes a first extended plate and a second extended plate disposed opposite to each other, a third limiting plate abutting against the first extended plate, and a fourth limiting plate abutting against the second extended plate. The limiting member further includes a first stop plate, which is connected to the third limiting plate, and the first stop plate extends from the return air inlet and abuts against the first extension plate along the depth direction of the return air cavity; and / or, The limiting member further includes a second stop plate, which is connected to the fourth limiting plate, and the second stop plate extends from the return air inlet and abuts against the second extension plate along the depth direction of the return air cavity.

6. The fan coil unit return air box assembly according to claim 5, characterized in that, The extended enclosure further includes a third extended plate, with its two ends connected to the first extended plate and the second extended plate, respectively. The fastening assembly further includes a first stop member, which is movably disposed on the third extended plate so that it can move to abut against the purification module. The main board and the third extended plate are located at opposite ends of the purification module; and / or, The extended enclosure also includes one or more limiting back plates, which are disposed at one end of the extended enclosure near the return air cavity and are parallel to the second limiting plate.

7. The fan coil unit return air box assembly according to claim 4, characterized in that, The fan coil unit return air box assembly also includes a filter screen arranged parallel to the purification module at the return air inlet. The first limiting plate and the second limiting plate are located on the first side of the main board, and the third limiting plate and the fourth limiting plate are located on the second side of the main board. The first side and the second side of the main board are opposite to each other. The first side of the main board faces the purification module, and the second side of the main board faces the filter screen. The third limiting plate and / or the fourth limiting plate are provided with a front limiting plate, which extends along the height direction of the main board and faces the filter. The limiting member also includes a rear limiting plate, which is disposed on the second side of the main board and is on the same plane as the second limiting plate. Along the depth direction of the return air cavity, the filter is located between the front limiting plate and the rear limiting plate.

8. The fan coil unit return air box assembly according to claim 4, characterized in that, The fan coil unit return air box assembly also includes a wiring board, which includes a base plate and electrical contacts. The electrical contacts are disposed on the base plate for connection to a power source. The base plate is fitted inside the extended enclosure. The side end face of the purification module abuts against the base plate. The side end face of the purification module is provided with an electrical connection mating point, and the electrical contacts are connected to the electrical connection mating point.

9. The fan coil unit return air box assembly according to claim 8, characterized in that, A fan volute is provided inside the return air cavity. The fan volute is used to install the fan. The fan coil unit return air box assembly also includes a pad. The pad is fixed to the fan volute, and the pad abuts against the purification module along the depth direction of the return air cavity.

10. The fan coil unit return air box assembly according to claim 2, characterized in that, The limiting member includes an elastic member and hooks located at both ends of the elastic member. The hooks are connected to opposite sides of the return air inlet. The elastic member is elastically stretched and abuts against the purification module along the depth direction of the return air cavity to apply a force to the purification module in the direction of the return air cavity.

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