A clog-resistant filter refrigeration unit

Abstract

This utility model discloses an anti-clogging filter refrigeration unit, including a refrigeration unit with a filter tank inside. An output pipe is integrally connected to the other side of the filter tank. Valves are installed on the output pipe, first exhaust pipe, second exhaust pipe, input pipe, first air inlet pipe, and second air inlet pipe. A cover is bolted to one side of the filter tank, and an input pipe is integrally connected to one side of the cover. A first air inlet pipe is integrally connected to the top of the cover. A nitrogen tank is installed on one side of the refrigeration unit. An input pipe and an output pipe are respectively installed on both sides of the filter tank. A first exhaust pipe and a second exhaust pipe are respectively installed on both the input and output pipes. A first air inlet pipe and a second air inlet pipe are respectively connected to the two sides of the top of the filter tank. One end of each of the first and second air inlet pipes is connected to the nitrogen tank. This device reduces the operating cost and maintenance difficulty while ensuring effective filtration of the medium.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, specifically to an anti-clogging filter refrigeration unit. Background Technology

[0002] A refrigeration unit is a mechanical device used to generate cooling capacity and reduce the temperature of the environment or medium. It is widely used in industrial, commercial and civil fields. It transfers heat from one space (such as a room, equipment or liquid) to another space (usually outdoors or a cooling water system) through refrigeration cycles (such as vapor compression, absorption, thermoelectric, etc.) to achieve the purpose of cooling or freezing.

[0003] Currently, the filters of refrigeration units are mainly installed on the main liquid line, specifically after the condenser (or receiver) and before the throttling device (such as the expansion valve). The filters are mainly composed of components such as filter screens and molecular sieves. However, the service life of molecular sieves is limited, so they need to be replaced regularly, which is costly. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide an anti-clogging filter refrigeration unit to solve the problem of high cost of using refrigeration unit filters mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-clogging filter refrigeration unit, comprising a refrigeration unit, a filter tank inside the refrigeration unit, a nitrogen tank on one side of the refrigeration unit, an input pipe and an output pipe on both sides of the filter tank, a first exhaust pipe and a second exhaust pipe on both the input pipe and the output pipe, a first air inlet pipe and a second air inlet pipe connected to both sides of the top of the filter tank, and one end of each of the first air inlet pipe and the second air inlet pipe connected to the nitrogen tank.

[0006] Preferably, a cover is bolted to one side of the filter tank, an input pipe is integrally connected to one side of the cover, and a first air inlet pipe is integrally connected to the top of the cover.

[0007] Preferably, an output pipe is integrally connected to the other side of the filter tank, and valves are provided on the output pipe, the first exhaust pipe, the second exhaust pipe, the input pipe, the first air inlet pipe, and the second air inlet pipe.

[0008] Preferably, a sleeve is inserted inside the filter tank, and the sleeve is filled with molecular sieve.

[0009] Preferably, a retaining cotton sheet is provided on one side of the sleeve, and a limiting pressure cap is provided on one side of the retaining cotton sheet.

[0010] Preferably, the filter tank is provided with a filter screen inside, and the filter screen is located on one side of the limiting pressure cover.

[0011] Preferably, the limiting cover has a right-angled "U" shaped cross-section and a mesh structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This device reduces the cost of use and the difficulty of maintenance while ensuring the filtration effect on the medium.

[0014] (2) This device sets a first air inlet pipe and a second air inlet pipe on the left and right sides of the filter tank, so that the first air inlet pipe and the second air inlet pipe correspond to the two sides of the molecular sieve respectively. Nitrogen gas can be transported through the first air inlet pipe and the second air inlet pipe to purge the molecular sieve, thereby increasing the life of the molecular sieve, reducing the frequency of replacing the molecular sieve, and reducing operating costs.

[0015] (3) This device is equipped with a first exhaust pipe and a second exhaust pipe on both the input pipe and the output pipe, so that the dust-laden gas can be discharged from the first exhaust pipe and the second exhaust pipe when the molecular sieve is being purged, thus achieving the purpose of sewage discharge. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the filter tank of an anti-clogging filtration refrigeration unit according to the present invention;

[0017] Figure 2 This utility model relates to an anti-clogging filter refrigeration unit. Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a side view of the limiting pressure cap of an anti-clogging filter refrigeration unit according to the present invention;

[0019] Figure 4 This is a front view of an anti-clogging filter refrigeration unit according to the present invention.

[0020] In the diagram: 1. First exhaust pipe; 2. First intake pipe; 3. Filter canister; 4. Second intake pipe; 5. Second exhaust pipe; 6. Input pipe; 7. Cover; 8. Filter screen; 9. Limiting cover; 10. Sleeve; 11. Molecular sieve; 12. Output pipe; 13. Intercepting cotton sheet; 14. Nitrogen tank; 15. Refrigeration unit. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides a technical solution: an anti-clogging filter refrigeration unit, including a refrigeration unit 15, a filter tank 3 inside the refrigeration unit 15, a cover 7 bolted to one side of the filter tank 3, an input pipe 6 integrally connected to one side of the cover 7, and a first air inlet pipe 2 integrally connected to the top of the cover 7. The cover 7 can be opened to facilitate the installation of a filter screen 8, a limiting pressure cap 9, and an intercepting cotton sheet 13. An output pipe 12 integrally connected to the other side of the filter tank 3, and valves are provided on the output pipe 12, the first exhaust pipe 1, the second exhaust pipe 5, the input pipe 6, the first air inlet pipe 2, and the second air inlet pipe 4. These valves can be solenoid valves, controlled by P... The LC system operates under automatic control. When the first intake pipe 2 and the second intake pipe 4 are open, the first exhaust pipe 1 and the second exhaust pipe 5 are also open, while the input pipe 6 and the output pipe 12 are closed. This facilitates nitrogen purging and exhaust gas discharge. The first intake pipe 2 and the second intake pipe 4 are opened sequentially and not used simultaneously, which also prevents contamination of the input pipe 6 and the output pipe 12. A sleeve 10 is inserted inside the filter tank 3, and the sleeve 10 is filled with a molecular sieve 11. This structure facilitates the filling of the molecular sieve 11 by using the sleeve 10, and also facilitates the emptying and replacement of the molecular sieve 11. An intercepting cotton sheet 13 is provided on one side of the sleeve 10, and a limiting cap 9 is provided on one side of the intercepting cotton sheet 13. This structure uses the intercepting cotton pad 13 to intercept the molecular sieve 11, preventing it from flowing out of the sleeve 10. The filter tank 3 has a filter screen 8 located on one side of the limiting cover 9. This structure uses the filter screen 8 to filter impurities and dust from the medium. The limiting cover 9 has a right-angled "U" shape in cross-section and a mesh structure. This structure can press the intercepting cotton pad 13, ensuring it fits tightly against one side of the sleeve 10, preventing the molecular sieve 11 from flowing out of the sleeve 10. At the same time, the limiting cover 9 does not affect the flow of the medium. A nitrogen tank 14 is located on one side of the refrigeration unit 15, and the filter tank 3... An input pipe 6 and an output pipe 12 are respectively provided on both sides. A first exhaust pipe 1 and a second exhaust pipe 5 are provided on both the input pipe 6 and the output pipe 12. A first air inlet pipe 2 and a second air inlet pipe 4 are respectively connected to the two sides of the top of the filter tank 3. One end of the first air inlet pipe 2 and the second air inlet pipe 4 are connected to the nitrogen tank 14. The nitrogen tank 14 is controlled by accessories such as valves and pressure gauges. The filter tank 3 of this device is located after the condenser or liquid receiver of the refrigeration unit 15 and before the throttling device such as the expansion valve. The refrigeration unit 15 is composed of a compressor, condenser, throttling device, evaporator and auxiliary components. This part is the prior art, so it will not be described in detail here.

[0023] Working principle: When using this anti-clogging filter refrigeration unit, if it is necessary to clean the molecular sieve 11, the nitrogen tank 14 and the first inlet pipe 2 can be opened. At this time, the nitrogen enters the filter tank 3 through the first inlet pipe 2 to purge the internal components of the filter tank 3, so that the moisture in the molecular sieve 11 and some impurities on the filter screen 8 are discharged from the second exhaust pipe 5. Then, the second inlet pipe 4 is used for purging, and the first inlet pipe 2 is closed. At this time, the nitrogen is purged in reverse, and the gas and moisture are discharged from the first exhaust pipe 1. During the purging process, the input pipe 6 and the output pipe 12 are kept closed until the purging work is completed.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clog-resistant filter refrigeration unit, comprising a refrigeration unit (15), wherein a filter tank (3) is disposed inside the refrigeration unit (15), characterized in that: A nitrogen tank (14) is provided on one side of the refrigeration unit (15). An input pipe (6) and an output pipe (12) are provided on both sides of the filter tank (3). A first exhaust pipe (1) and a second exhaust pipe (5) are provided on both the input pipe (6) and the output pipe (12). A first air inlet pipe (2) and a second air inlet pipe (4) are connected to both sides of the top of the filter tank (3). One end of the first air inlet pipe (2) and the second air inlet pipe (4) are connected to the nitrogen tank (14).

2. The anti-clogging filter refrigeration unit according to claim 1, characterized in that: The filter tank (3) is bolted to one side of the cover (7), and the cover (7) is integrally connected to one side of the input pipe (6). The top of the cover (7) is integrally connected to the first air inlet pipe (2).

3. The anti-clogging filter refrigeration unit according to claim 1, characterized in that: The filter tank (3) is integrally connected to an output pipe (12) on the other side. Valves are provided on the output pipe (12), the first exhaust pipe (1), the second exhaust pipe (5), the input pipe (6), the first air inlet pipe (2), and the second air inlet pipe (4).

4. The anti-clogging filter refrigeration unit according to claim 1, characterized in that: The filter tank (3) is fitted with a sleeve (10), and the sleeve (10) is filled with molecular sieve (11).

5. The anti-clogging filter refrigeration unit according to claim 4, characterized in that: A cotton strip (13) is provided on one side of the sleeve (10), and a limit cap (9) is provided on one side of the cotton strip (13).

6. The anti-clogging filter refrigeration unit according to claim 1, characterized in that: The filter tank (3) is equipped with a filter screen (8) inside, and the filter screen (8) is located on one side of the limiting cover (9).

7. The anti-clogging filter refrigeration unit according to claim 6, characterized in that: The limiting cover (9) has a right-angle "U" shaped structure in cross-section and a mesh structure.

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