Combined air conditioning unit

By introducing intermediate support frames and seals into the combined air conditioning unit, the problems of large number of installation frames and large maintenance space under the multi-layer filter configuration are solved, and the cost and efficiency of the combined air conditioning unit are reduced.

CN222298163UActive Publication Date: 2025-01-03QINGDAO HISENSE BOSCH AIR CONDITIONING SYSTEM CO LTD
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Patent Information

Application Number
CN202421142523.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-23
Publication Date
2025-01-03
Estimated Expiration
2034-05-23

AI Technical Summary

Technical Problem

The existing combined air conditioning units have problems of complexity and cost during the filter installation and maintenance process, especially the large number of installation frames and large maintenance space requirements under the multi-layer filter configuration, which affects the efficiency and economy of the equipment.

Method used

The intermediate support frame structure is adopted to reduce the number of filter installation frames and maintenance space requirements. Through the design of seals and fixed components between the intermediate support frame and filter, the filter can be achieved separately pressure removal and rapid installation and disassembly.

Benefits of technology

It reduces the manufacturing cost and installation complexity of combined air conditioning units, improves air purification efficiency, reduces air leakage rate, and simplifies the maintenance and replacement process of filters.

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Abstract

The utility model relates to the technical field of air treatment, and discloses a combined air conditioning unit which comprises a shell, a plurality of functional sections are arranged in the shell, and the plurality of functional sections at least comprise a filtering section; the filtering section is provided with a filtering module, the filtering module comprises a mounting frame, a plurality of filters and middle supporting frames, the filters are sequentially arranged in the mounting frame front and back in the airflow direction, each middle supporting frame is of a frame structure defined by supporting frame side plates on the periphery, and every two adjacent filters are spaced by one middle supporting frame to form a certain space; a first opening is formed in at least one supporting frame side plate of the middle supporting frame, and the first opening is communicated with the interval space between the two corresponding filters. According to the combined type air conditioning unit, the multiple layers of filters are arranged in the installation frame, the requirement for independent pressure taking of each layer of filter is met through the middle supporting frame, the number of the installation frames of the filters and the space needed for overhauling can be reduced, the section length of a combined type air conditioner is saved, and the manufacturing cost and the installation complexity are effectively reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of air treatment, in particular to a combined air conditioning unit. Background Art

[0002] At present, modular air conditioning units are widely used in various building environments as air conditioning equipment, and their performance and operating efficiency have attracted much attention. Among them, the filter is a key component for purifying the circulating air of the air conditioning system and improving the indoor air quality. Its structural design and installation method directly affect the performance of the overall system.

[0003] Filters purify the air by capturing impurities in the air, but over time, accumulated dirt can cause the filter to become clogged, affecting filtration efficiency and equipment performance. Therefore, regular filter cleaning or replacement becomes a necessary maintenance measure.

[0004] In order to accurately monitor the status of the filter and detect blockage in time, the method of monitoring the wind pressure difference before and after the filter is usually adopted. In view of this, in order to enhance the filtering efficiency, it is often accompanied by the configuration of multiple layers of filters. Each additional layer of filtration requires a corresponding set of installation frames, and a certain maintenance space needs to be left between the installation frames, which undoubtedly increases the complexity, volume and cost of the air conditioning unit.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In response to the problems pointed out in the background technology, the present application provides a combined air-conditioning unit. By setting an intermediate support frame, the number of filter installation frames and the space required for maintenance can be simplified, effectively reducing manufacturing costs and installation complexity while maintaining or improving air purification efficiency.

[0007] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0008] In some embodiments of the present application, a combined air conditioning unit is provided, comprising:

[0009] The housing has a plurality of functional sections arranged therein, wherein the plurality of functional sections include at least one filtering section; the filtering section is provided with a filtering module,

[0010] The filter module includes a mounting frame and a plurality of filters arranged in the mounting frame in sequence front to back along the airflow direction;

[0011] The filter module also includes an intermediate support frame, which is surrounded by support frame side panels on all sides to form a frame structure. Two adjacent filters are separated by a certain space from each other by an intermediate support frame. A first opening is provided on at least one support frame side panel of the intermediate support frame, and the first opening is connected to the interval space between the corresponding two filters.

[0012] The combined air conditioning unit can meet the requirement of taking pressure on each filter layer separately by arranging multiple layers of filters in the installation frame and arranging intermediate support frames between the multiple layers of filters, thereby reducing the number of installation frames and the space required for maintenance and reducing costs.

[0013] In some embodiments of the present application, the front side and the rear side of the intermediate support frame are respectively provided with first sealing members, and the first sealing members are respectively in sealing contact with adjacent filters.

[0014] In some embodiments of the present application, the mounting frame includes a mounting frame side plate portion arranged on all sides and a mounting frame end plate portion arranged on one side of the mounting frame side plate portion, and the filter is arranged in a frame formed by the mounting frame side plate portion and rests against the mounting frame end plate portion.

[0015] In some embodiments of the present application, a second seal is provided on the inner side of the end plate of the mounting frame, and the second seal is in sealing contact with an adjacent filter. The second seal and the first seal form a multi-layer seal, effectively reducing the bypass air leakage rate of the filter.

[0016] In some embodiments of the present application, a support positioning protrusion that protrudes toward the inner side of the mounting frame is provided on the inner side of the side plate portion of the mounting frame, and the support positioning protrusion is used to abut against the four sides of the filter and the intermediate support frame to support and limit the filter and the intermediate support frame, so that the filter and the intermediate support frame are supported and fixed in the mounting frame.

[0017] In some embodiments of the present application, first openings are provided on the support frame side panels around the intermediate support frame, and second openings are provided on the installation frame side panels around the installation frame, and the second openings are arranged opposite to the first openings.

[0018] In some embodiments of the present application, a plurality of filter modules are arranged in the filter section; the installation frame is a rectangular frame, and the plurality of filter modules are stacked and arranged in sequence along a plane perpendicular to the airflow direction and fixedly connected by the installation frame. The filter modules are installed in combination to be applicable to different air conditioning units and filtering requirements.

[0019] In some embodiments of the present application, the four corners of the mounting frame are respectively provided with fixing components, which are arranged on the outside of the filter away from the end plate of the mounting frame and are used to fix the filter. By providing the fixing components, the filter can be quickly installed and removed.

[0020] In some embodiments of the present application, the fixing assembly includes a fixing plate and a fastening bolt; a limiting portion is provided on the side plate of the mounting frame; a threaded hole is provided on the fixing plate, the fastening bolt is fastened in the threaded hole, and one end abuts against the filter, and the reverse force of the fastening bolt is utilized to make the fixing plate abut against the limiting portion, thereby fixing the filter in the mounting frame.

[0021] In some embodiments of the present application, the filter includes a filter frame and a filter component mounted on the filter frame, and the filter frame abuts against the intermediate support frame.

[0022] Compared with the prior art, the advantages and positive effects of the utility model are:

[0023] In the combined air-conditioning unit in the above embodiment, multiple layers of filters are arranged in the installation frame. At the same time, an intermediate support frame is provided to meet the requirement of taking pressure on each layer of filters separately. This can reduce the number of filter installation frames and the space required for maintenance, save the length of the combined air-conditioning unit, and effectively reduce the manufacturing cost and installation complexity.

[0024] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 A schematic structural diagram of a combined air conditioning unit according to some embodiments is shown;

[0027] Figure 2 A three-dimensional view of a filter module in a combined air conditioning unit according to some embodiments is shown. Figure 1 ;

[0028] Figure 3 A three-dimensional view of a filter module in a combined air conditioning unit according to some embodiments is shown. Figure 2 ;

[0029] Figure 4 An exploded view of a filter module in a combined air conditioning unit according to some embodiments is shown;

[0030] Figure 5 A side view of a filter module in a combined air conditioning unit according to some embodiments is shown;

[0031] Figure 6 Shows Figure 5 Middle AA section;

[0032] Figure 7 A schematic structural diagram of an intermediate support frame and a first sealing member of a filter module according to some embodiments is shown;

[0033] Figure 8 An exploded view of an intermediate support frame and a first seal of a filter module according to some embodiments is shown;

[0034] Fig. 9 A schematic diagram of the structure of a mounting frame of a filter module according to some embodiments is shown;

[0035] Fig.10 A schematic diagram showing the structure of assembling multiple filter modules in a combined air conditioning unit according to some embodiments;

[0036] Description of reference numerals:

[0037] 10-housing; 11-filtering section; 12-cooling or heating section; 13-humidifying or dehumidifying section; 14-fan section;

[0038] 200- filtration module;

[0039] 210-mounting frame; 211-mounting frame side plate; 212-mounting frame end plate; 213-second opening; 214-limiting portion; 215-support positioning protrusion; 216-mounting hole;

[0040] 220-filter; 221-filter material; 222-filter frame;

[0041] 230-middle support frame; 231-side plate of support frame; 232-first opening;

[0042] 240 - first sealing member;

[0043] 250 - second sealing member;

[0044] 260-fixing assembly; 261-fixing plate; 262-fastening bolts. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0051] The utility model provides an embodiment of a combined air-conditioning unit. The combined air-conditioning unit is one of the most important equipment for air treatment. It does not have a cold or heat source itself, but uses cold or hot water or steam as a medium to complete the functions of filtering, purifying, heating, cooling, humidifying, dehumidifying, silencing, and fresh air treatment of the air.

[0052] Combined air conditioning unit is a customized air handling equipment, which is the core part of the air conditioning system composed of multiple independent functional sections installed according to a specific air handling process. These functional sections can be flexibly matched according to different environmental requirements and process requirements to meet the air conditioning needs of different occasions.

[0053] like Figure 1 The basic structure of the combined air-conditioning unit usually includes but is not limited to the following functional sections: a fresh air section, a filtering section 11, a cooling or heating section 12, a humidifying or dehumidifying section 13, and a fan section 14.

[0054] Fresh air enters the combined air-conditioning unit through the fresh air section, passes through the filtering section to filter out dust and debris; then it is cooled or heated through the cooling or heating section to make the air reach the required temperature point, and then it is humidified to the humidity requirement of the system through the humidification section, that is, to reach the specified air supply state point, and finally the treated air is delivered into the room through the fan section.

[0055] like Figure 1-Figure 10 As shown, some embodiments of the present application provide a combined air-conditioning unit.

[0056] The combined air conditioning unit comprises a housing 1, in which a plurality of functional sections are arranged, and the plurality of functional sections at least comprises a filter section 11. The filter section can be a primary filter section, a medium filter section or a high efficiency filter section. The filter section 11 comprises a filter module 200.

[0057] See also Figure 2-Figure 4 The filter module 200 includes a mounting frame 210 and a plurality of filters 220 sequentially arranged in the mounting frame 210 in a front-to-back manner along an air flow direction.

[0058] The filter 220 provided in the primary filter section, the medium filter section or the high efficiency filter section corresponds to a coarse filter, a medium filter and a high efficiency filter respectively.

[0059] Specifically, Figure 4 The filter 220 includes a filter material 221 and a filter frame 222 for fixing the filter material 221 .

[0060] For primary filters, the filter materials may include metal mesh, iron filings, ceramic rings, glass fibers and other materials, which can effectively intercept large particles of dust and debris.

[0061] For medium efficiency filters, use finer filter media, such as synthetic fiber or glass fiber filter paper, to capture smaller particles.

[0062] For high-efficiency filters, ultra-fine glass fiber paper is usually used as the filter material, which can capture particles as small as sub-micron level.

[0063] The multiple filters 220 in the mounting frame 210 may be filters of the same type or filters of different types, such as plate filters, pleated filters, bag filters, and the like.

[0064] In this application Figure 1-Figure 10 The filter module 200 shown exemplarily shows two filters 220 , and the two filters 220 have the same structure.

[0065] See also Fig. 9 The mounting frame 210 includes mounting frame side panels 211 arranged on all sides and mounting frame end panels 212 arranged on one side of the mounting frame side panels 211; the mounting frame side panels 211 on all sides form a rectangular frame structure, and the mounting frame end panels 212 are arranged on one side of the frame structure.

[0066] The mounting frame side plate 211 may have mounting holes 216 for fixing the mounting frame 210 to the housing.

[0067] The filter 220 is disposed in a rectangular frame structure, and the size of the filter frame 222 is slightly smaller than the size of the rectangular frame so that it can be installed in the rectangular frame.

[0068] The filter module 200 further includes a middle support frame 230 .

[0069] like Figure 7 As shown, the middle support frame 230 is surrounded by support frame side panels 231 to form a frame structure.

[0070] Two adjacent filters 220 are separated by a certain space by a middle support frame 230 for pressure collection.

[0071] A first opening 232 is formed on at least one supporting frame side plate 231 of the middle supporting frame 230 . The first opening 232 is communicated with the interval space between the two corresponding filters 220 .

[0072] When taking the pressure, the device for wind pressure detection can be inserted into the interval space between two adjacent filters 220 through the first opening 232 to perform wind pressure detection.

[0073] like Figure 5 The filter module 200 shown is provided with two layers of filters 220 . A pressure point a can be set at the front side of the filter module, a pressure point b can be set at the back side of the filter 220 module, and a pressure point c can be set in the interval space between the two filters 220 .

[0074] By taking the pressure of each layer of filter 220 separately, the wind pressure difference between the front and rear sides of each layer of filter 220 can be obtained, and the status of each layer of filter 220 can be monitored.

[0075] In the above-mentioned combined air-conditioning unit, multiple layers of filters 220 are arranged in the installation frame 210. At the same time, by providing an intermediate support frame 230, the requirement of separate pressure measurement for each layer of filter 220 is met, which can simplify the number of filter installation frames and the space required for maintenance, save the section length of the combined air-conditioning, and effectively reduce the manufacturing cost and installation complexity.

[0076] In some embodiments of the present application, Figure 6-Figure 8 As shown, the front side and the rear side of the middle support frame 230 are respectively provided with first sealing members 240 , and the first sealing members 240 are respectively in sealing contact with adjacent filters.

[0077] The first sealing member 240 is a foamed member, which surrounds the middle support frame 230 and is fixed to the front side and the rear side of the middle support frame 230. The foamed member can be directly formed and fixed to the middle support frame 230 by foaming glue dispensing, that is, foaming directly on the middle support frame 230.

[0078] By providing the first sealing member 240, the contact tightness between each layer of the filter 220 and the middle support frame 230 is further improved, and the air leakage is reduced.

[0079] In some embodiments of the present application, Figure 6 As shown, a second sealing member 250 is disposed on the inner side surface of the mounting frame end plate portion 212 , and the second sealing member 250 is in sealing contact with an adjacent filter.

[0080] The second sealing member 250 is a foamed member, which surrounds the inner side of the end plate of the mounting frame and is fixed on the inner side of the end plate of the mounting frame. The foamed member can be directly formed and fixed on the mounting frame 210 by foaming glue.

[0081] By providing the second sealing member 250, the contact tightness between the filter 220 and the mounting frame 210 is further improved, and the air leakage is further reduced.

[0082] In other embodiments of the present application, the first sealing member 240 and the second sealing member 250 may be sealing gaskets, sealing strips, and the like.

[0083] In some embodiments of the present application, Fig. 9 As shown, the side plates 211 of the mounting frame are respectively provided with support positioning protrusions 215. The support positioning protrusions 215 are used to abut against the filter 220 and the middle support frame 230 around to support and limit the filter 220 and the middle support frame 230.

[0084] In this embodiment, two supporting and positioning protrusions 215 are provided on each mounting frame side plate portion 211 .

[0085] In some embodiments of the present application, the support positioning protrusion 215 is a plate-like structure in the shape of a trapezoidal boss. The support positioning protrusion 215 protrudes toward the inner side of the mounting frame 210 and abuts against the filter 220 and the middle support frame 230 .

[0086] See also Fig.10 In order to meet the different size requirements of the filter sections in different devices, the filter module 200 can be modularly designed and used in combination.

[0087] Specifically, first openings 232 are provided on the support frame side plates 231 around the middle support frame 230 , and second openings 213 are provided on the installation frame side plates 211 around the installation frame 210 . The second openings 213 are arranged opposite to the first openings 232 .

[0088] A plurality of filter modules 200 are stacked in sequence along a plane perpendicular to the airflow direction and are fixedly connected via a mounting frame 210 .

[0089] The mounting frame side plates 211 around the mounting frame 210 are provided with mounting holes 216 , and the filter modules 200 adjacent to each other vertically, horizontally, and horizontally are fixedly connected through the mounting holes 216 on the mounting frame 210 and fastening screws.

[0090] After the plurality of filter modules 200 are assembled and installed, the internal spaces of the filter modules 200 can be connected to each other through the first opening 232 on the side of the support frame and the second opening 213 on the side of the installation frame 210 .

[0091] The first opening 232 and the second opening 213 are long strip openings, and the lengths thereof are substantially equal to the size of the filter 220 , so as to ensure smooth flow of air in each filter module 200 .

[0092] In some embodiments of the present application, Figure 6 As shown, the four corners of the mounting frame 210 are respectively provided with fixing components 260 . The fixing components 260 are arranged on the outer side of the filter 220 away from the end plate portion 212 of the mounting frame, and are used to fix the filter 220 .

[0093] Specifically, the fixing assembly 260 includes a fixing plate 261 and a fastening bolt 262 .

[0094] The two adjacent mounting frame side plates 211 at the corners are respectively provided with limiting portions 214 .

[0095] The limiting portion 214 may be a slot structure, and a corresponding folded edge may be provided on the fixing plate 261 to be inserted into the slot.

[0096] A threaded hole is provided on the fixing plate 261, and a fastening bolt 262 is fastened in the threaded hole, with one end abutting against the filter 220. When the fastening bolt 262 is twisted, the reverse force of the fastener is utilized to make the fixing plate 261 abut against the limiting portion 214, thereby fixing the filter 220 in the mounting frame 210.

[0097] By twisting the fastening bolt 262 in the opposite direction, the fixing plate 261 can be removed, and then the filter 220 can be removed. By providing the fixing assembly 260, the filter 220 can be quickly installed and removed.

[0098] When the filter needs to be replaced, first remove the front filter, then remove the middle support, and then remove the rear filter.

[0099] If you only want to replace and clean the filter on the front side, you only need to take out the filter on the front side.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

[0101] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A combined air conditioning unit, comprising: The housing has a plurality of functional sections arranged therein, wherein the plurality of functional sections include at least one filtering section; the filtering section is provided with a filtering module, It is characterized in that The filter module includes a mounting frame and a plurality of filters arranged in the mounting frame in sequence front to back along the airflow direction; The filter module also includes an intermediate support frame, which is surrounded by support frame side panels on all sides to form a frame structure. Two adjacent filters are separated by a certain space from each other by an intermediate support frame. A first opening is provided on at least one support frame side panel of the intermediate support frame, and the first opening is connected to the interval space between the corresponding two filters.

2. The combined air conditioning unit according to claim 1, characterized in that: The front side surface and the rear side surface of the intermediate support frame are respectively provided with first sealing members, and the first sealing members are respectively in sealing contact with adjacent filters.

3. The combined air conditioning unit according to claim 1, characterized in that: The mounting frame comprises mounting frame side plates arranged around the mounting frame and mounting frame end plates arranged on one side of the mounting frame side plates. The filter is arranged in a frame surrounded by the mounting frame side plates and abuts against the mounting frame end plates.

4. The combined air conditioning unit according to claim 3, characterized in that: A second sealing member is disposed on the inner side surface of the end plate portion of the mounting frame, and the second sealing member is in sealing contact with an adjacent filter.

5. The combined air conditioning unit according to claim 3, characterized in that: A support positioning protrusion protruding toward the inner side of the mounting frame is provided on the inner side of the side plate of the mounting frame, and the support positioning protrusion is used to abut against the four sides of the filter and the middle supporting frame to support and limit the filter and the middle supporting frame.

6. The combined air conditioning unit according to claim 3, characterized in that: The supporting frame side plates around the middle supporting frame are all provided with first openings, and the mounting frame side plates around the mounting frame are all provided with second openings, and the second openings are arranged opposite to the first openings.

7. The combined air conditioning unit according to claim 6, characterized in that: The installation frame is a rectangular frame, and a plurality of the filter modules are stacked in sequence along a plane perpendicular to the airflow direction and fixedly connected via the installation frame.

8. The combined air conditioning unit according to claim 3, characterized in that: The four corners of the installation frame are respectively provided with fixing components, and the fixing components are arranged on the outer side of the filter away from the end plate of the installation frame, and are used to fix the filter.

9. The combined air conditioning unit according to claim 8, characterized in that: The fixing assembly includes a fixing plate and a fastening bolt; a limiting portion is provided on the side plate of the mounting frame; a threaded hole is provided on the fixing plate, the fastening bolt is fastened in the threaded hole, one end of the fastening bolt abuts against the filter, and the reverse force of the fastening bolt is utilized to make the fixing plate abut against the limiting portion, thereby fixing the filter in the mounting frame.

10. The combined air conditioning unit according to claim 1, characterized in that: The filter comprises a filter frame and a filter component mounted on the filter frame, and the filter frame abuts against the intermediate support frame.