CN212457535U

CN212457535U - Filter, refrigerating system, outdoor unit and air conditioner

Info

Publication number: CN212457535U
Application number: CN202021347831.3U
Authority: CN
Inventors: 孙丹丽; 欧硕文; 张建锋; 郑世奇
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-02-02
Anticipated expiration: 2030-07-10

Abstract

The utility model provides a filter, refrigerating system, off-premises station and air conditioner, filter are used for the filtration of refrigerating system internal refrigerant, include: the at least two filtering channels are integrally and parallelly arranged; at least two filtering passages are provided with filtering cavities, and filtering net devices are arranged in the filtering cavities. The utility model discloses a parallelly connected integral type filter of many filtration passageways has satisfied the filtration demand many times of refrigerant among the refrigerating system promptly, has solved the free space of a plurality of filter equipment again and has taken the problem, only needs to carry out assembly, once fall the noise reduction processing to the integral type structure, and the reduction space occupies, is favorable to the miniaturized design of air condensing units, reduces part quantity, has reduced manufacturing cost.

Description

Filter, refrigerating system, outdoor unit and air conditioner

Technical Field

The invention belongs to the technical field of refrigeration, and particularly relates to a filter, a refrigeration system, an outdoor unit and an air conditioner.

Background

A core component compressor of a refrigerating system of a room air conditioner frequently breaks down in use, wherein the blocking and locked-rotor ratio exceeds 40%, and most of the reasons are that system impurities enter a cylinder part, an electronic expansion valve, a throttling valve core and a capillary tube are used as the most main throttling components of the air conditioner, the inner pore diameter of the electronic expansion valve, the throttling valve core and the capillary tube is 0.3-1.9 mm, the hidden danger of impurity blockage in the refrigerating system exists, and the design of a filter in the refrigerating system is very important.

Refrigeration systems typically have four filters, respectively: the filter comprises an exhaust filter, an air return filter, a filter before the throttling component and a filter after the throttling component, wherein the air return filter and the exhaust filter can be omitted for reducing the volume, and only the filter before the throttling component and the filter after the throttling component are reserved. Because of there can be certain vibration in system operation and the transportation, for the reliability of assurance system, need guarantee the distance more than 15mm between filter and outer panel and near the pipeline, avoid producing to grind the pipe and reveal or bump the outer panel and produce the abnormal sound, filter back and forth before throttling arrangement simultaneously, because of the throttle produces certain noise, need adopt the damping piece parcel to fall the noise, for making things convenient for staff's operation, package damping piece department all still need reserve certain space, thereby the casing size of air condensing units has been restricted.

With the continuous development of market's demand and technique at present, customer's requirement is higher and higher, also has certain requirement to the outward appearance size of off-premises station, and the size of casing is constantly becoming littleer, and it is great to use two or more filters to occupy space, and the suitable space can't be reserved to the casing.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is that the filter occupies a large space in the existing refrigeration system and restricts the size of the shell, thereby providing the filter, the refrigeration system, the outdoor unit and the air conditioner.

In order to solve the above problems, the present invention provides a filter for filtering refrigerant in a refrigeration system, comprising:

the at least two filtering channels are integrally and parallelly arranged;

at least two filtering passages are provided with filtering cavities, and filtering net devices are arranged in the filtering cavities.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

Preferably, the at least two filter passages are formed by pressing single pipe pieces along at least two bus bars.

Preferably, the at least two filtration channels comprise a first filtration channel, a second filtration channel.

Preferably, the first filtering channel and the second filtering channel are separated by a stitching part, and the stitching part is sealed by a welding process, so that at least two filtering channels are not communicated with each other.

Preferably, the filtering channel further comprises a first connecting port and a second connecting port, the first connecting port and the second connecting port are respectively arranged at two ends of the filtering cavity, the part of the pressing part corresponding to the filtering cavity is a filler welding part, and the filler welding part is provided with a filler hole.

Preferably, a positioning structure is arranged in the filtering cavity, and the filter screen device is fixed in the filtering cavity through the positioning structure.

Preferably, the positioning structure is a concave-convex structure arranged on the inner wall of the filter cavity.

Preferably, the filter screen device comprises a filter screen, the filter screen at least comprises a first filter screen and a second filter screen which are arranged at intervals, and the mesh number of the first filter screen is larger than that of the second filter screen.

Preferably, a bumping ball is arranged between the first filter screen and the second filter screen and used for bumping and shaking off impurities on the filter screen to prevent the filter screen from being blocked.

Preferably, the impact ball is made of a high temperature resistant, corrosion resistant material.

Preferably, the impact ball is made of a nylon material.

Preferably, when the at least two filtering channels include a first filtering channel and a second filtering channel, the first filtering channel is connected with a first heat exchanger of the refrigeration system, the second filtering channel is connected with a second heat exchanger of the refrigeration system, a first filter screen in the first filtering channel is arranged close to the first heat exchanger, and a first filter screen in the second filtering channel is arranged close to the second heat exchanger.

A refrigerating system adopts the filter.

An outdoor unit adopts foretell filter.

An air conditioner adopts above-mentioned filter.

The filter, the refrigerating system, the outdoor unit and the air conditioner provided by the invention at least have the following beneficial effects:

the invention designs the integrated filter with the multiple filter channels connected in parallel, which not only meets the requirement of multiple times of filtering of the refrigerant in a refrigeration system, but also solves the problem of space occupation of a plurality of filter devices, only needs one-time assembly and one-time noise reduction treatment on the integrated structure, reduces the space occupation, is beneficial to the miniaturization design of an air conditioner outdoor unit, reduces the number of parts and reduces the production cost.

Drawings

FIG. 1 is a schematic perspective view of a filter according to an embodiment of the present invention;

fig. 2 is an axial cross-sectional view of a filter according to an embodiment of the present invention.

The reference numerals are represented as:

1. a first filtration channel; 2. a second filtration channel; 3. a filter chamber; 4. a press-fit portion; 5. a first connection port; 6. a second connection port; 7. a filler weld; 8. a filler hole; 9. a positioning structure; 11. a first filter screen; 12. a second filter screen; 13. impact the ball.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides a filter for filtering refrigerant in a refrigeration system, including: the at least two filtering channels are integrally and parallelly arranged; at least two filtration passageways all are equipped with filter chamber 3, are equipped with filter screen device in the filter chamber 3.

Two or more filter equipment need be set up to refrigerating system among the prior art, and in order to satisfy the reliability requirement, fall the requirement of making an uproar and the assembly process requirement, need occupy the inside great space of air condensing units casing, the parallelly connected integral type filter of many filtration passageways has been designed to this application embodiment, the filtration demand to the refrigerant many times among the refrigerating system has been satisfied promptly, the free space of a plurality of filter equipment occupies the problem again, only need once assemble the integral type structure, once fall the processing of making an uproar, it occupies to reduce the space, be favorable to air condensing units's miniaturized design, reduce part quantity, and the production cost is reduced.

Meanwhile, because two or more filters are arranged in the existing refrigeration system, the filters need to be welded with a plurality of pipelines to form an assembly to be assembled in an air conditioner external unit, and a certain assembling distance is needed between every two pipelines in order to prevent the pipelines from vibrating mutually and breaking by friction for a long time. The distance between the pipelines and the shape of the pipelines can be deformed in the transportation or operation process, and the original drawing state is not easy to keep. Therefore, the automatic equipment cannot be qualified for the assembly and welding work of the pipeline, and if the automatic assembly is carried out, the deformed components cannot be accurately matched to the assembly position. By adopting the integrated filter, the overlapped pipelines between the two filters are reduced, the assembly error caused by the deformation of parts is reduced, and the automatic equipment can prepare to assemble the filters and the pipelines.

Preferably, in order to improve the production and processing efficiency of the filter and reduce the manufacturing cost, the at least two filtering channels are formed by pressing the single pipe piece along at least two generatrices, for example, after the two generatrices of the axial section of the single pipe piece are pressed together, the inner space of the single pipe body is divided into two filtering channels with the same inner diameter. In this embodiment, two bus bars pressed together do not necessarily belong to the same axial cross section, and if the two bus bars belong to two axial cross sections with a certain angle, the two bus bars can be pressed together to form two filtering channels with different inner diameters. Theoretically, any number of more than two buses can be pressed together, for example, three buses can be pressed together to form three filtering channels with the same inner diameter, four buses form four filtering channels, and so on.

Furthermore, the spatial position change of the bus pressing point may also form different filtering channels, which are not listed in the application one by one, and all the modifications made according to the design idea of the application are within the protection scope of the application.

Preferably, the at least two filtering passages include a first filtering passage 1 and a second filtering passage 2 in consideration of the use requirement of the filter in the air conditioner. The first filtering channel 1 and the second filtering channel 2 are separated by a pressing part 4, and the pressing part 4 is sealed by a welding process, so that at least two filtering channels are not communicated with each other.

The filtering channel further comprises a first connecting port 5 and a second connecting port 6, the first connecting port 5 and the second connecting port 6 are respectively arranged at two ends of the filtering cavity 3, the part of the pressing part 4, corresponding to the filtering cavity 3, is a filler welding part 7, and the filler welding part 7 is provided with a filler hole 8. The size of the connecting port can be designed according to the pipe end forming of the pipeline used by the system, so that the phenomenon that the size is not appropriate is avoided.

When the single pipe is adopted to manufacture the filter, the mutual sealing performance of the two filtering channels is required to be ensured, the welding of the pressing part at the position of the pipe orifice can be realized by adopting modes such as flame brazing and the like at the position close to the pipe orifice, the welding mode of flame brazing can not be basically realized in the middle of the pipe body, and the welding flux can not be filled, so that the welding flux can be filled by punching at the middle position and is solved by furnace welding.

Preferably, in order to fix the filter screen device in the filter chamber 3, a positioning structure 9 is arranged in the filter chamber 3, and the filter screen device is fixed in the filter chamber 3 through the positioning structure 9. The positioning structure 9 is a concave-convex structure arranged on the inner wall of the filter cavity 3. The concave-convex structure on the filter cavity 3 can be manufactured by external rolling, and the processing is convenient.

Preferably, the filter screen device at least comprises a first filter screen 11 and a second filter screen 12 which are arranged at intervals, and the mesh number of the first filter screen 11 is larger than that of the second filter screen 12, so that the filter screen device has a multi-layer filtering effect.

First filter screen 11, second filter screen 12 pass through the installation of filter screen mount, and the filter screen mount carries out axial fixity through unsmooth location structure 9 simultaneously, makes it can not slide along the refrigerant flow direction. The positioning structure 9 can be an upper ring and a lower ring of bulges for clamping the filter screen fixing frame.

Preferably, a flushing ball 13 is arranged between the first filter screen 11 and the second filter screen 12, and the flushing ball 13 is used for colliding and shaking off impurities on the filter screens to prevent the filter screens from being blocked. The impact ball 13 is made of a high-temperature-resistant and corrosion-resistant material. The impact ball 13 is made of nylon material. The impact balls 13 may be provided in two or more. The nylon material can resist temperature of 120 degrees, almost no abnormal sound is generated when the nylon material collides with each other, and the elasticity is good. When the whole machine runs, the refrigerant flows through the filter, certain impact force can be generated, and the system can also generate certain vibration, so that the two nylon impact balls 13 collide to move, impurities on the filter screen are vibrated and dropped, and the filter screen is prevented from being blocked.

Preferably, when the at least two filtering passages include a first filtering passage 1 and a second filtering passage 2, one end of the first filtering passage 1 is connected to a first heat exchanger of the refrigeration system, and the other end of the first filtering passage may be connected to one port of the throttling device, one port of the capillary tube, or one port of the combination structure of the throttling device and the capillary tube. One end of the second filtering channel 2 is connected with a second heat exchanger of the refrigerating system, and the other end of the second filtering channel can be connected with the other port of the throttling device, or one port of the capillary tube, or one port of the combined structure of the throttling device and the capillary tube. The first filter screen 11 in the first filter channel 1 is arranged close to the first heat exchanger, and the first filter screen 11 in the second filter channel 2 is arranged close to the second heat exchanger.

No matter be refrigerating system or heating system, the direction of refrigerant circulation is first through first filter screen 11, passes through second filter screen 12 again, and first filter screen 11 sets up big mesh number, filters large granule impurity earlier, avoids all magazine matter to be whole on the individual layer filter screen for the filth is stifled seriously to the filter screen. The remaining small impurities are filtered through the second filter 12.

The refrigerant flows back exactly when refrigerating and heating, and impurities in the filter, which are shaken off by the impact ball 13, can be brought back to the heat exchanger by switching refrigeration and heating, and secondly, when the system is shut down, the place where a general indoor unit is hung is higher, the outdoor unit is slightly lower, and the impurities can be brought back to the heat exchanger by the refrigerant backflow under the action of gravity when the system is shut down.

The filter of this embodiment, two filtration passageway integrated structures adopt single pipe fitting processing, and the reliability is high, can guarantee that the air conditioner is under refrigeration or the heating circumstances, and the refrigerant all passes through the filter around the business turn over throttle part, guarantees air conditioning system's reliable operation. The integrated filter reduces a single filter and a corresponding transition connecting pipe, and reduces the use of a damping noise reduction block or a sponge noise reduction block. The method is more suitable for production of automatic equipment, and is beneficial to reducing the production cost and improving the product competitiveness. The filter can clean the filter screen by vibration with the help of the impulsive force of the refrigerant, and the problem of filth blockage after the system runs for a long time is effectively reduced.

A refrigerating system adopts the filter.

An outdoor unit adopts foretell filter.

An air conditioner adopts above-mentioned filter.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A filter for filtering refrigerant in a refrigeration system, comprising:

the at least two filtering channels are integrally and parallelly arranged;

the at least two filtering channels are provided with filtering cavities (3), and filtering net devices are arranged in the filtering cavities (3).

2. The filter of claim 1, wherein the at least two filter passages are formed from a single piece of material pressed together along at least two bus bars.

3. A filter according to claim 1, wherein the at least two filter channels comprise a first filter channel (1), a second filter channel (2).

4. A filter according to claim 3, wherein the first filter channel (1) and the second filter channel (2) are separated by a press fit (4), and the press fit (4) is sealed by a welding process so that the at least two filter channels are not in communication with each other.

5. The filter according to claim 4, wherein the filter channel further comprises a first connection port (5) and a second connection port (6), the first connection port (5) and the second connection port (6) are respectively arranged at two ends of the filter cavity (3), the portion of the pressing part (4) corresponding to the filter cavity (3) is a filler welding part (7), and the filler welding part (7) is provided with filler holes (8).

6. A filter according to any one of claims 1-5, characterised in that a positioning structure (9) is provided in the filter chamber (3), and that the screening device is fixed in the filter chamber (3) by means of the positioning structure (9).

7. A filter according to claim 6, characterised in that the positioning structure (9) is a relief structure provided on the inner wall of the filter chamber (3).

8. A filter according to any one of claims 1-5 and 7, wherein the filter screen device at least comprises a first filter screen (11) and a second filter screen (12) which are arranged at intervals, and the mesh number of the first filter screen (11) is larger than that of the second filter screen (12).

9. A filter according to claim 8, wherein a flushing ball (13) is arranged between the first filter (11) and the second filter (12), and the flushing ball (13) is used for colliding and shaking off impurities on the filters to prevent the filters from being blocked.

10. A filter according to claim 9, characterised in that the impact balls (13) are made of a high temperature resistant, corrosion resistant material.

11. A filter according to claim 10, characterised in that the impact ball (13) is made of nylon material.

12. A filter according to claim 8, characterised in that when the at least two filter channels comprise a first filter channel (1) and a second filter channel (2), the first filter channel (1) is connected to a first heat exchanger of a refrigeration system and the second filter channel (2) is connected to a second heat exchanger of the refrigeration system, a first filter mesh (11) in the first filter channel (1) is arranged close to the first heat exchanger and a first filter mesh (11) in the second filter channel (2) is arranged close to the second heat exchanger.

13. A refrigeration system, characterized in that a filter according to any of claims 1-12 is used.

14. An outdoor unit, characterized in that the filter of any one of claims 1 to 12 is used.

15. An air conditioner characterized by using the filter according to any one of claims 1 to 12.