Air pipe type split air conditioner indoor unit convenient to overhaul
By designing structures such as support frames, protective boxes, and static pressure boxes, the problems of inconvenient maintenance and condensate leakage of indoor units of duct-type split air conditioners have been solved, enabling convenient maintenance and equipment protection, and extending service life.
Patent Information
- Application Number
- CN202520028756.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Traditional ducted split air conditioner indoor units are inconvenient to maintain in factory buildings due to their hanging location, and condensate dripping may damage processing equipment and affect its lifespan.
A duct-type split air conditioner indoor unit structure was designed, including a support frame, a protective box, a static pressure box, and an air supply duct. The protective box protects the indoor unit body, and a climbing frame and a detachable inspection cover enable convenient maintenance. The protective pipe and waterproof sealing ring prevent water damage, the shock-absorbing spring reduces vibration, and the insulation layer provides insulation.
It enables convenient maintenance of indoor units of ducted split air conditioners, avoids interference with factory processing equipment and water damage, and extends equipment life.
Smart Images

Figure CN223768987U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioning technology, and in particular to a duct-type split air conditioner indoor unit that is easy to maintain. Background Technology
[0002] Duct-type split air conditioners are divided into indoor and outdoor sections, namely the indoor unit and the outdoor unit, which are connected by long, insulated copper pipes.
[0003] Traditional ducted split air conditioner indoor units are suspended above the factory building. Since processing equipment is often placed below the factory building, it is difficult to erect scaffolding to repair the indoor units, making it inconvenient to perform maintenance. When the indoor units malfunction, it is difficult to handle them. Furthermore, during use, condensate water often drips from the indoor units onto the processing equipment, which can easily lead to water damage and rust, shortening the service life of the equipment. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the aforementioned problems in the prior art, this utility model provides a duct-type split air conditioner indoor unit that is easy to maintain. This allows for better maintenance of the indoor unit, facilitates repairs in case of malfunctions, and does not affect the normal operation of processing equipment within the factory, thus better protecting the processing equipment.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:
[0008] A convenient duct-type split air conditioner indoor unit includes a support frame, a protective box, an indoor unit body, and a static pressure box. The support frame is connected to the bottom of the protective box, the indoor unit body is installed inside the protective box, the static pressure box is provided at the top of the protective box, a return air duct is provided at the bottom of the protective box, one side of the static pressure box is connected to the exhaust port of the indoor unit body, and a supply air duct is installed on the other side of the static pressure box.
[0009] Furthermore, the upper part of the protective box is provided with an exhaust port, the static pressure box is connected to the exhaust port, the lower part of the protective box is provided with an air inlet, and the return air pipe is connected to the air inlet.
[0010] Furthermore, the top of the protective box is detachable and has an inspection cover.
[0011] Furthermore, a climbing frame is fixedly connected to the support frame.
[0012] Furthermore, a protective pipe is provided at the bottom of the protective box, which is used to protect the refrigerant pipeline.
[0013] Furthermore, a waterproof sealing ring is provided inside the protective tube.
[0014] Furthermore, the indoor unit body is installed inside the protective box via shock-absorbing springs.
[0015] Furthermore, the air supply duct is wrapped with an insulation layer.
[0016] Furthermore, a filter screen is installed on the return air duct.
[0017] (III) Beneficial Effects
[0018] The beneficial effects of this utility model are as follows: During the actual installation of the indoor unit, the indoor unit can be placed inside the protective box, and the protective box is installed on the outer wall of the factory building with expansion bolts. Two openings are made on the outer wall of the factory building, and then the static pressure box and return air duct are aligned with the two openings respectively. In actual use, the outdoor unit delivers refrigerant to the indoor unit through the refrigerant pipe. Then, the indoor unit uses the entire protective box as a return air box and draws air into the indoor unit through the return air duct. The static pressure box sends the cold air into the supply air duct, and then the supply air duct delivers the cold air to the required parts of the factory. When it is necessary to inspect the indoor unit, the support frame can be climbed and the protective box can be opened to inspect the indoor unit. This allows for better inspection of the indoor unit, facilitates repair when a fault occurs, and does not affect the normal operation of the processing equipment in the factory, thus better protecting the processing equipment in the factory. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of a duct-type split air conditioner indoor unit for easy maintenance, as shown in an embodiment of this utility model.
[0020] Figure 2 This is a schematic diagram of the overall structure of a duct-type split air conditioner indoor unit for easy maintenance, as shown in an embodiment of this utility model.
[0021] Figure 3 This is a front view of the overall structure of the indoor unit of a duct-type split air conditioner, which is convenient for maintenance according to an embodiment of this utility model.
[0022] Figure 4 A side view of the overall structure of the indoor unit of the duct-type split air conditioner, which is convenient for maintenance according to an embodiment of this utility model;
[0023] Figure 5 This is a cross-sectional view of the overall structure of the indoor unit of the duct-type split air conditioner, which is convenient for maintenance according to an embodiment of this utility model.
[0024] [Explanation of Labels in the Attached Image]
[0025] 1. Static pressure box; 2. Protective box; 3. Climbing frame; 4. Support frame; 5. Inspection cover; 6. Air supply duct; 7. Return air duct; 8. Protective pipe; 9. Indoor unit body; 10. Shock-absorbing spring. Detailed Implementation
[0026] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] Please refer to Figures 1 to 5 As shown, this utility model discloses a duct-type split air conditioner indoor unit that is easy to maintain, including a support frame 4, a protective box 2, an indoor unit body 9, and a static pressure box 1. The support frame 4 is connected to the bottom of the protective box 2. The indoor unit body 9 is installed inside the protective box 2. The static pressure box 1 is provided on the upper part of the protective box 2, and a return air duct 7 is provided on the lower part of the protective box 2. One side of the static pressure box 1 is connected to the exhaust port of the indoor unit body 9, and the other side of the static pressure box 1 is equipped with an air supply duct 6.
[0028] The working principle of this utility model is as follows: During the actual installation of the indoor unit body 9, the indoor unit body 9 can be placed inside the protective box 2, and the protective box 2 is installed on the outer wall of the factory building with expansion bolts. Two openings are made on the outer wall of the factory building. Then, the static pressure box 1 and the return air pipe 7 are aligned with the two openings respectively. In actual use, the outdoor unit delivers refrigerant to the indoor unit body 9 through the refrigerant pipe. Then, the indoor unit body 9 uses the entire protective box as the return air box and draws air into the indoor unit body 9 through the return air pipe 7. The cold air is sent into the air supply pipe 6 through the static pressure box 1. Then, the cold air is delivered to the required location in the factory through the air supply pipe 6. When it is necessary to inspect the indoor unit body 9, the indoor unit body 9 can be inspected by climbing the support frame 4 and opening the protective box 2.
[0029] Furthermore, the upper part of the protective box 2 is provided with an exhaust port, the static pressure box 1 is connected to the exhaust port, the lower part of the protective box 2 is provided with an air inlet, and the return air pipe 7 is connected to the air inlet.
[0030] As can be seen from the above description, it is beneficial for the air in the factory to enter the indoor unit 9 through the return air duct 7 and the air inlet, and the cold air in the indoor unit 9 is discharged through the exhaust vent.
[0031] Furthermore, the top of the protective box 2 is detachably equipped with an inspection cover 5.
[0032] As can be seen from the above description, it is convenient to inspect the indoor unit body 9 inside the protective box 2 by opening the inspection cover 5.
[0033] Furthermore, a climbing frame 3 is fixedly connected to the support frame 4.
[0034] As can be seen from the above description, it is advantageous for staff to climb using the climbing frame 3.
[0035] Furthermore, a protective pipe 8 is provided at the bottom of the protective box 2, which is used to protect the refrigerant pipeline.
[0036] As can be seen from the above description, it is beneficial to protect the refrigerant pipeline through the protective pipe 8.
[0037] Furthermore, a waterproof sealing ring is provided inside the protective tube 8.
[0038] As can be seen from the above description, it helps to prevent external water stains from entering the interior of the protective box 2 through the protective pipe 8.
[0039] Furthermore, the indoor unit body 9 is installed inside the protective box 2 via a shock-absorbing spring 10.
[0040] As can be seen from the above description, it is beneficial to reduce the vibration of the indoor unit body 9 by means of the shock-absorbing spring 10.
[0041] Furthermore, the air supply duct 6 is wrapped with an insulation layer.
[0042] As can be seen from the above description, it is beneficial to keep the air supply duct 6 warm.
[0043] Furthermore, a filter screen is installed on the return air duct 7.
[0044] As can be seen from the above description, it is beneficial to filter the airflow in the return air duct 7 through the filter screen. Example 1
[0045] Please refer to Figures 1 to 5 A duct-type split air conditioner indoor unit that is easy to maintain includes a support frame 4, a protective box 2, an indoor unit body 9, and a static pressure box 1. The support frame 4 is connected to the bottom of the protective box 2. The indoor unit body 9 is installed inside the protective box 2. The static pressure box 1 is provided on the upper part of the protective box 2, and a return air duct 7 is provided on the lower part of the protective box 2. One side of the static pressure box 1 is connected to the exhaust port of the indoor unit body 9, and an air supply duct 6 is installed on the other side of the static pressure box 1.
[0046] An installation plate is welded to the edge of the protective box 2, and expansion bolts are provided on the installation plate;
[0047] The upper part of the protective box 2 is provided with an exhaust port, the static pressure box 1 is connected to the exhaust port by bolts, the lower part of the protective box 2 is provided with an air inlet, and the return air pipe 7 is connected to the air inlet.
[0048] The protective box 2 is made of Class A heat-insulating fireproof rock wool board;
[0049] The top of the protective box 2 is detachable with an inspection cover 5 by bolts;
[0050] The climbing frame 3 is fixedly connected to the support frame 4 by welding;
[0051] The bottom of the protective box 2 is provided with a protective pipe 8, which is used to protect the refrigerant pipeline;
[0052] The protective tube 8 is equipped with a waterproof sealing ring inside;
[0053] The indoor unit body 9 is installed inside the protective box 2 via shock-absorbing springs 10;
[0054] The air supply duct 6 is wrapped with an insulation layer, which is made of insulation foam;
[0055] A filter screen is installed on the return air duct 7.
[0056] The above describes the basic principles, main features, and advantages of this utility model. All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be detailed here.
[0057] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A duct-type split air conditioner indoor unit that is easy to maintain, characterized in that: Including support frame, protective box, indoor unit body and static pressure box, the support frame is connected with the bottom of the protective box, the indoor unit body is installed in the inside of the protective box, the upper portion of the protective box is provided with the static pressure box, the lower portion of the protective box is provided with return air pipe, one side of the static pressure box is connected with the air outlet of the indoor unit body, the other side of the static pressure box is installed with air supply pipe.
2. The indoor unit of the split air conditioner according to claim 1, wherein: The upper portion of the protective box is provided with air outlet, the static pressure box is connected with the air outlet, the lower portion of the protective box is provided with air inlet, and the return air pipe is connected with the air inlet.
3. The indoor unit of the split air conditioner according to claim 1, wherein: The top of the protective box is detachably provided with an inspection cover.
4. The indoor unit of the split air conditioner according to claim 1, wherein: The support frame is fixedly connected with a climbing frame.
5. The duct-type split air conditioner indoor unit for easy maintenance as described in claim 1, characterized in that: The bottom of the protective box is provided with a protection pipe, and the protection pipe is used for protecting the refrigerant pipeline.
6. The easily serviced ducted split-type indoor unit of claim 5, wherein: The inside of the protection pipe is provided with a waterproof sealing ring.
7. The easily serviced ducted indoor unit of claim 1, wherein: The indoor unit body is installed in the inside of the protective box through damping spring.
8. The indoor unit of the split air conditioner according to claim 1, wherein: The outside of the air supply pipe is wrapped with a heat preservation layer.
9. The easily serviced ducted indoor unit of claim 1, wherein: The return air pipe is provided with a filter screen.