Central air conditioner fresh air system

Abstract

The utility model relates to a central air conditioner fresh air system which comprises a shell, an air inlet and a filter assembly, the air inlet is formed in the first side wall of the shell, a filter cavity is formed in the shell, the air inlet is communicated with the filter cavity, the filter assembly is arranged in the filter cavity, and the filter assembly comprises a filter screen mounting plate, a filter screen support and a filter screen. The filter screen mounting plate is arranged on the second side wall of the shell, a plurality of mounting grooves are formed in the filter screen mounting plate side by side at intervals, the filter screen support is mounted in the mounting grooves, the filter screen is arranged on the filter screen support, and a locking mechanism used for fixing the filter screen support is arranged on the filter screen mounting plate. According to the utility model, the plurality of filter screens are independently mounted and fixed through the filter screen mounting plate, so that each filter screen can be quickly mounted and replaced, the maintenance efficiency of the fresh air system is improved, and the maintenance difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air systems, in particular to a central air-conditioning fresh air system. Background Art

[0002] The central air-conditioning system consists of a cold and heat source system and an air conditioning system. It adopts the principle of liquid vaporization refrigeration to provide the required cooling capacity for the air conditioning system to offset the cooling load of the indoor environment. The heating system provides heat to the air conditioning system to offset the heat load of the indoor environment. The fresh air system is one of the three major air circulation systems of the central air-conditioning, namely the indoor air circulation system, the outdoor air circulation system and the fresh air system. The main function of the fresh air system is to realize the circulation and ventilation between the room air and the outdoor control.

[0003] The central air conditioning fresh air system consists of a fresh air fan and pipe accessories. The fresh air fan purifies the outdoor air and introduces it into the room, and the indoor air is discharged through the pipe. In order to ensure the quality of the fresh air entering the room, most of the fresh air fans currently have a filtering function, which can filter the incoming air to maintain the indoor air quality. The common filtering form is a three-stage filter. The first-level filter is a primary filter that can filter hair, large particles of dust and dust. The second-level filter is a HEPA filter that can efficiently filter PM2.5, PM10, pollen, etc. The third-level filter is an activated carbon filter that can efficiently filter formaldehyde, odor, TVOC and other harmful gases, thereby purifying the indoor air intake. At the same time, to ensure the air purification effect, filters at all levels need to be replaced regularly. However, since the filter is set in the shell of the fresh air fan, and the fresh air fan is generally installed in the ceiling, it is difficult to replace the filter. Professional maintenance personnel need to reach into the ceiling to open the shell to replace the filter, which is difficult to replace. Utility Model Content

[0004] The utility model aims to provide a central air-conditioning fresh air system to solve the problem of difficulty in replacing filter screens in the current central air-conditioning fresh air system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A central air conditioning fresh air system includes a shell, an air inlet and a filter assembly, wherein the air inlet is arranged on the first side wall of the shell, a filter chamber is arranged in the shell, the air inlet is communicated with the filter chamber, the filter assembly is arranged in the filter chamber, the filter assembly includes a filter mounting plate, a filter bracket and a filter, the filter mounting plate is arranged on the second side wall of the shell, a plurality of mounting grooves are arranged side by side at intervals on the filter mounting plate, the filter bracket is installed in the mounting groove, the filter is arranged on the filter bracket, and a locking mechanism for fixing the filter bracket is provided on the filter mounting plate.

[0007] Furthermore, the filter bracket includes a filter fixing plate and a filter frame, the filter fixing plate is arranged at one end of the filter frame, the filter frame is used to clamp the filter, and the upper and lower ends of the filter fixing plate are provided with clamping grooves, the clamping grooves extend inwardly along the upper and lower end surfaces of the filter fixing plate, and the clamping grooves are used for the locking mechanism to be inserted to fix the filter bracket.

[0008] Further, the locking mechanism includes a locking tongue and a first compression spring, locking grooves are arranged above and below the mounting groove, a hand buckle is arranged on the front side of the locking tongue, the hand buckle is slidably arranged in the locking groove, a spring support plate is arranged on the rear side of the locking tongue, a spring mounting plate is arranged on the rear side of the filter mounting plate, the first compression spring is arranged between the spring support plate and the spring mounting plate, and the movement of the hand buckle is used to drive the locking tongue to insert into or move away from the clamping groove.

[0009] Furthermore, a guide block is provided on the rear side of the filter fixing plate, and the guide block is provided on one side of the clamping groove. A guide slope is provided on the guide block, and the guide slope is used to squeeze the locking tongue to move and insert it into the clamping groove.

[0010] Furthermore, a marking groove is provided on the front side of the filter fixing plate, and the marking groove is used for pasting a filter type indication label.

[0011] Furthermore, a second compression spring is provided on the inner wall of the filter cavity, and the second compression spring is used to abut against the filter frame to pop out the filter bracket.

[0012] Furthermore, the filter frame is provided with a clamping claw for clamping the filter.

[0013] Furthermore, a receiving groove is concavely provided on the second side wall of the shell, and the filter mounting plate is arranged in the receiving groove.

[0014] Beneficial effects of the utility model:

[0015] The central air-conditioning fresh air system of the utility model is provided with a plurality of installation slots, so that a filter bracket can be arranged in each installation slot to install different types of filters, such as a primary filter can be arranged to filter large particles of hair dust and dust, a secondary filter is arranged, the secondary filter is a HEPA filter, to filter PM2.5, PM10, pollen, etc., a third-stage filter is arranged, the third-stage filter is an activated carbon filter, which can efficiently filter formaldehyde, odor, TVOC and other harmful gases, thereby realizing the filtration and purification of the intake air, and at the same time, since each filter bracket is independently arranged and the service life of each filter is different, when replacing the filter, it is only necessary to pull out the filter bracket corresponding to the filter to be replaced, without opening the shell or taking out all the filters, thereby greatly improving the convenience of replacing the filter element, and the filter can be replaced without relying on professional maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram (stereoscopic diagram) of the central air-conditioning fresh air system of the utility model;

[0017] Figure 2 It is a structural schematic diagram (explosion diagram) of the central air-conditioning fresh air system of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the shell in the central air-conditioning fresh air system of the utility model;

[0019] Figure 4 It is a structural schematic diagram of a filter support and a filter mounting plate in a central air conditioning fresh air system of the utility model;

[0020] Figure 5 This is a structural schematic diagram of the filter support in the central air conditioning fresh air system of the utility model;

[0021] Figure 6 This is a structural schematic diagram of a filter installation plate in a central air conditioning fresh air system of the utility model;

[0022] Figure 7 yes Figure 6 A schematic diagram of the structure from another angle;

[0023] Figure 8 yes Figure 7 Schematic diagram of the structure at A in the middle.

[0024] The names corresponding to the marks in the figure are:

[0025] 1. Shell, 11. Air inlet, 12. First side wall, 13. Air outlet, 14. Filter chamber, 15. Second side wall, 16. Second compression spring, 17. Accommodating groove, 2. Filter mounting plate, 21. Mounting groove, 22. Lock tongue, 23. First compression spring, 24. Locking groove, 25. Hand buckle, 26. Spring support plate, 27. Spring mounting plate, 3. Filter bracket, 31. Filter fixing plate, 311. Marking groove, 32. Filter frame, 321. Snap claw, 33. Snap groove, 34. Guide block, 35. Guide slope, 4. Filter. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] The central air conditioning fresh air system in the embodiment of the utility model is achieved by arranging a filter mounting plate on the outer wall of the shell, and independently installing and fixing multiple filters through the filter mounting plate, thereby realizing rapid installation and replacement of each filter, improving the maintenance efficiency of the fresh air system and reducing the maintenance difficulty.

[0028] like Figure 1-Figure 8 As shown, the central air conditioning fresh air system includes a shell 1, an air inlet 11 and a filter assembly. The air inlet 11 is arranged on the side wall of the shell 1 in the width direction, which is recorded as the first side wall 12. The fresh air entering the air inlet 11 is filtered by the filter assembly, and then passes through the total heat exchanger and is discharged through the fan to the air outlet 13 arranged on the other side of the shell 1. A filter chamber 14 is arranged in the shell 1. The function of the filter chamber 14 is to install the filter assembly. The filter assembly includes a filter mounting plate 2, a filter bracket 3 and a filter 4. The filter The mounting plate 2 is arranged on the side wall of the shell 1 in the length direction, which is recorded as the second side wall 15. On the filter mounting plate 2, three mounting grooves 21 are arranged side by side at intervals. The filter bracket 3 is installed in the mounting groove 21, and the filter 4 is arranged on the filter bracket 3. The filter bracket 3 plays a role in supporting the installation of the filter 4. At the same time, a locking mechanism is arranged on the filter mounting plate 2. After the filter bracket 3 is inserted into the mounting groove 21, the filter bracket 3 can be locked and fixed by the locking mechanism, thereby preventing the filter bracket 3 from slipping.

[0029] Since three installation slots 21 are provided, a filter bracket 3 can be provided in each of the three installation slots 21 to install different types of filters 4. A primary filter can be provided to filter large particles of hair and dust, a secondary filter is provided, and the secondary filter is a HEPA filter to filter PM2.5, PM10, pollen, etc., a tertiary filter is provided, and the tertiary filter is an activated carbon filter, which can efficiently filter formaldehyde, odor, TVOC and other harmful gases, thereby achieving filtration and purification of the intake air. At the same time, since the three filter brackets 3 are independently provided and the service life of each filter is different, when replacing the filter, it is only necessary to pull out the filter bracket 3 corresponding to the filter to be replaced, without opening the shell 1 or taking out all the filters, thereby greatly improving the convenience of replacing the filter element, and the filter can be replaced without relying on professional maintenance personnel.

[0030] It should be noted that, in other embodiments, the number of mounting slots 21 may be more than three, and the number and type of filters are selected according to specific circumstances.

[0031] like Figure 4 and Figure 5 As shown, the filter support 3 includes a filter fixing plate 31 and a filter frame 32. The filter fixing plate 31 is arranged at one end of the filter frame 32. The filter frame 32 is used to install the filter 4 and can clamp the filter 4, so as to facilitate the insertion of the filter 4 from the installation groove 21 into the filter cavity 14. Clamping grooves 33 are arranged at the upper and lower ends of the filter fixing plate 31. The clamping grooves 33 extend inwardly along the upper and lower end surfaces of the filter fixing plate 31. The clamping grooves 33 cooperate with the locking mechanism to lock the filter support 3. The locking mechanism is inserted into the clamping grooves 33, so as to fix the filter support 3.

[0032] Specifically, Figure 6-Figure 8 As shown, the locking mechanism includes a locking tongue 22 and a first compression spring 23. On the filter mounting plate 2, locking grooves 24 are provided above and below the mounting groove 21. A hand buckle 25 is provided on the front side of the locking tongue 22. The hand buckle 25 is slidably arranged in the locking groove 24. A spring supporting plate 26 is provided on the rear side of the locking tongue 22, and a spring mounting plate 27 is provided on the rear side of the filter mounting plate 2. The first compression spring 23 is arranged between the spring supporting plate 26 and the spring mounting plate 27. Through the action of the spring, the locking tongue 22 is always in an extended state, so that it can be inserted into the clamping groove 33 to fix the filter bracket 3. When the filter bracket 3 needs to be removed, the hand buckle 25 is pushed to make the lock disengage from the clamping groove 33. Disassembly and assembly are relatively convenient. At the same time, the spring mounting plate 27 also plays a limiting role on the locking tongue 22 to prevent the locking from shaking.

[0033] In some embodiments, Figure 5As shown, a guide block 34 is provided on the rear side of the filter fixing plate 31, and the guide block 34 is provided on one side of the clamping groove 33. A guide slope 35 is provided on the guide block 34. When installing the filter bracket 3, it is only necessary to push the filter fixing plate 31 into the installation groove 21. When the guide slope 35 squeezes the end of the locking tongue 22, the locking tongue 22 retreats, and then the locking tongue 22 is inserted into the clamping groove 33, and the installation of the filter bracket 3 can be completed, making the installation more convenient and quick.

[0034] To facilitate the distinction between the filters, in some embodiments, a marking groove 311 is provided on the front side of the filter fixing plate 31, and a filter type indication label can be pasted in the marking groove 311, thereby facilitating the identification of different types of filters, and also marking the replacement time and other contents.

[0035] In other embodiments, a second compression spring 16 is provided on the inner wall of the filter chamber 14. When the filter 4 is installed in place, the filter frame 32 abuts against the spring and does not affect normal use. When the filter bracket 3 is removed, the second compression spring 16 acts so that when the locking tongue 22 is disengaged from the snap-fit ​​groove 33 by pulling the buckle, the filter bracket 3 can pop out a small section due to the action of the second compression spring 16, thereby facilitating the removal of the filter bracket 3 and improving the user experience.

[0036] like Figure 5 As shown, in order to fix the filter 4, a clamping claw 321 is provided on the filter frame 32, and the clamping claw 321 is provided on the front and rear sides of the filter frame 32, so that the filter 4 can be clamped and fixed.

[0037] like Figure 3 As shown, a receiving groove 17 is formed inwardly on the second side wall 15 of the shell 1, and the filter mounting plate 2 is arranged in the receiving groove 17, so that the filter mounting plate 2 does not protrude from the outer wall of the shell 1, thereby maintaining the convenience of installing the fresh air system.

[0038] Working principle:

[0039] The shell 1 is installed on the roof inside the building. When installing the filter 4, first install the corresponding filter 4 in the filter frame 32, then pick up the filter bracket 3 and directly push it into the corresponding installation groove 21 by hand. As the filter bracket 3 is inserted, the guide block 34 located on the rear side of the filter fixing plate 31 begins to squeeze the lock tongue 22, and the lock tongue 22 retreats due to the action of the first compression spring 23, and then the lock tongue 22 can be inserted into the clamping groove 33 set at the upper and lower ends of the filter fixing plate 31. At this time, the filter bracket 3 can be installed in place, and the operation is convenient. When the filter needs to be replaced, the two hand buckles 25 are pressed at the same time to make the lock tongue 22 disengage from the clamping groove 33. Due to the action of the second compression spring 16, the filter bracket 3 is ejected, so that the corresponding filter 4 can be replaced, so that the corresponding filter can be replaced independently without opening the shell 1.

[0040] The central air-conditioning fresh air system of the utility model has a reasonable structure and the filter screen can be replaced quickly and conveniently, thus solving the problem that the filter screen of the current central air-conditioning fresh air system is difficult to replace.

[0041] Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the utility model.

Claims

1. A central air conditioning fresh air system, characterized in that: It includes a shell, an air inlet and a filter assembly, the air inlet is arranged on the first side wall of the shell, a filter chamber is arranged in the shell, the air inlet is communicated with the filter chamber, the filter assembly is arranged in the filter chamber, the filter assembly includes a filter mounting plate, a filter bracket and a filter, the filter mounting plate is arranged on the second side wall of the shell, a plurality of mounting grooves are arranged side by side on the filter mounting plate, the filter bracket is installed in the mounting groove, the filter is arranged on the filter bracket, and a locking mechanism for fixing the filter bracket is arranged on the filter mounting plate.

2. The central air conditioning fresh air system according to claim 1, characterized in that: The filter bracket includes a filter fixing plate and a filter frame, the filter fixing plate is arranged at one end of the filter frame, the filter frame is used to clamp the filter, and the upper and lower ends of the filter fixing plate are provided with clamping grooves, the clamping grooves extend inwardly along the upper and lower end surfaces of the filter fixing plate, and the clamping grooves are used for the locking mechanism to be inserted to fix the filter bracket.

3. The central air conditioning fresh air system according to claim 2, characterized in that: The locking mechanism includes a locking tongue and a first compression spring. Locking grooves are arranged above and below the mounting groove. A hand buckle is arranged on the front side of the locking tongue. The hand buckle is slidably arranged in the locking groove. A spring support plate is arranged on the rear side of the locking tongue. A spring mounting plate is arranged on the rear side of the filter mounting plate. The first compression spring is arranged between the spring support plate and the spring mounting plate. The movement of the hand buckle is used to drive the locking tongue to insert into or move away from the clamping groove.

4. The central air conditioning fresh air system according to claim 3, characterized in that: A guide block is arranged on the rear side of the filter fixing plate, and the guide block is arranged on one side of the clamping groove. A guide slope is arranged on the guide block, and the guide slope is used to squeeze the locking tongue to move and insert it into the clamping groove.

5. The central air conditioning fresh air system according to claim 2, characterized in that: A marking groove is arranged on the front side of the filter fixing plate, and a filter type indication label is pasted in the marking groove.

6. The central air conditioning fresh air system according to claim 2, characterized in that: The inner wall of the filter cavity is provided with a second compression spring, and the second compression spring is used to abut against the filter frame to pop out the filter bracket.

7. The central air conditioning fresh air system according to claim 2, characterized in that: The filter screen frame is provided with a clamping claw for clamping the filter screen.

8. The central air conditioning fresh air system according to claim 1, characterized in that: A receiving groove is concavely arranged on the second side wall of the shell, and the filter installation plate is arranged in the receiving groove.

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