CN114810552A - Double-cylinder air inlet pipe of air conditioner compressor - Google Patents
Double-cylinder air inlet pipe of air conditioner compressor Download PDFInfo
- Publication number
- CN114810552A CN114810552A CN202210528888.0A CN202210528888A CN114810552A CN 114810552 A CN114810552 A CN 114810552A CN 202210528888 A CN202210528888 A CN 202210528888A CN 114810552 A CN114810552 A CN 114810552A
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- Prior art keywords
- fixedly connected
- cylinder
- air inlet
- inlet pipe
- pipe
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Links
- 238000004378 air conditioning Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 abstract description 4
- 239000003507 refrigerant Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/10—Arrangement or mounting thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a double-cylinder air inlet pipe of an air conditioner compressor. The air condition compressor double-cylinder intake pipe includes: a connecting pipe; the connecting device comprises a first connecting disc, the first connecting disc is fixedly connected to one end of the connecting pipe, a third connecting disc is fixedly connected to the top of the first connecting disc through a screw, a connecting block is fixedly connected to the outside of the third connecting disc, and a transfer plate is rotatably connected to the top of the connecting block. According to the air inlet pipe of the double cylinders of the air condition compressor, the filter cartridges are installed through the clamping inner cylinder, so that a plurality of filter cartridges are increased in number, personnel do not need to disassemble when cleaning the filter cartridges temporarily, and replacement work of different filter cartridges can be completed only by rotating the connecting cylinder, so that the filter cartridges of the compressor can be replaced conveniently and quickly, the personnel in the replaced filter cartridges can disassemble and clean the filter cartridges, normal operation of the compressor cannot be influenced, and the working efficiency of the compressor is effectively improved.
Description
Technical Field
The invention relates to the field of air inlet pipes of air-conditioning compressors, in particular to a double-cylinder air inlet pipe of an air-conditioning compressor.
Background
The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, is the heart of a refrigeration system, sucks low-temperature low-pressure refrigerant gas from an air suction pipe, drives a piston to compress the refrigerant gas through the operation of a motor, and discharges the high-temperature high-pressure refrigerant gas to an exhaust pipe to provide power for a refrigeration cycle.
The air conditioner compressor functions to compress a driving refrigerant in an air conditioner refrigerant circuit. An air conditioner compressor is generally installed in an outdoor unit, and when the air conditioner compressor is used, air suction is required through an air inlet pipe, then refrigerant is extracted from a low-pressure area, compressed and sent to a high-pressure area for cooling and condensation, heat is emitted to air through a radiating fin, the refrigerant is changed into a liquid state from a gaseous state, and the pressure is increased.
However, when the impurities in the filter device installed in the air inlet pipe of the existing compressor are too much and need to be cleaned, the filter device can be reused after being detached and cleaned by personnel, but the filter device is difficult to rapidly complete the cleaning work of the filter device when the filter device is needed to be used as soon as possible under special conditions, so that the work of the air conditioner compressor is interrupted, and the normal use of the personnel is affected.
Therefore, it is necessary to provide a twin-cylinder intake pipe of an air conditioner compressor to solve the above technical problems.
Disclosure of Invention
The invention provides a double-cylinder air inlet pipe of an air conditioner compressor, which solves the problem that the normal operation of the compressor is influenced by overlong cleaning time of a filtering device.
In order to solve the technical problem, the double-cylinder air inlet pipe of the air conditioner compressor provided by the invention comprises: a connecting pipe;
first connection disc, first connection disc fixed connection is in the one end of connecting pipe, screw fixedly connected with third connection pad is passed through at the top of first connection disc, the fixed section of thick bamboo of inside fixedly connected with of third connection pad, the outside fixedly connected with connecting block of third connection pad, the top of connecting block is rotated and is connected with the keysets, the three connecting rod of outside fixedly connected with of keysets, it is three the equal fixedly connected with connecting cylinder of one end of connecting rod, the inside sliding connection of connecting cylinder has the joint inner tube, the inside threaded connection of joint inner tube has the cartridge filter, the inner wall fixedly connected with dwang of cartridge filter, the diameter phase-match of first connection disc and third connection pad, and inside all seted up the screw hole for fixing, the cartridge filter is current device, can replace for other tube-shape filter equipment.
Preferably, the movable groove has been seted up to the outside of connecting cylinder, the fixed frame of the outside fixedly connected with of joint inner tube, the draw-in groove has been seted up to the inside of fixed frame, first fixed orifices has been seted up to the inside of fixed frame, fixed frame is L type frame for the inside that inserts the fixed slot is fixed.
Preferably, a fixing groove is formed in the top of the third connecting disc, a second fixing hole is formed in the outer portion of the third connecting disc, and the second fixing hole is formed in the corresponding position of the fixing groove.
Preferably, the other end of the clamping inner cylinder is fixedly connected with a second connecting disc, the second connecting disc is fixedly connected with a fourth connecting disc through a screw, one end of the fourth connecting disc is fixedly connected with a connecting hose, and the connecting hose is used for being connected with a compressor.
Preferably, the other end fixedly connected with intake pipe of connecting pipe, the one end fixedly connected with front end pipe of intake pipe, the diameter of front end pipe is greater than the intake pipe.
Preferably, the outside of the air inlet pipe is fixedly connected with two connecting pieces, and the connecting pieces are used for being connected and fixed with the compressor shell.
Preferably, the inside fixedly connected with filter screen of front end pipe, the filter screen sets up in the entrance of front end pipe.
Preferably, the outside fixedly connected with adjustable ring of front end pipe, a plurality of regulation holes have been seted up to the one end of adjustable ring, the regulation hole is the annular and sets up, and inside is the thread groove.
Preferably, the inside of the front end pipe is rotatably connected with a rotating shaft, the outside of the rotating shaft is fixedly connected with a limiting plate, the limiting plate is a circular plate, and the diameter of the limiting plate is smaller than that of an inner groove of the front end pipe.
Preferably, one end of the rotating shaft is fixedly connected with a rotating block, the top of the rotating block is fixedly connected with a rotating handle, the top of the rotating handle is provided with a fixing screw, and the position of the fixing screw corresponds to the position of the adjusting hole.
Compared with the prior art, the double-cylinder air inlet pipe of the air-conditioning compressor provided by the invention has the following beneficial effects:
the invention provides a double-cylinder air inlet pipe of an air condition compressor, wherein a third connecting disc is fixed outside a first connecting disc at the rear end of a connecting pipe, the connecting block is installed through the third connecting disc, three connecting rods are rotatably connected through a transfer plate at the top of the connecting block, a clamping inner cylinder is installed through a connecting cylinder installed on the connecting rods, and a filter cylinder is installed through the clamping inner cylinder, so that a plurality of filter cylinders are increased in number, personnel do not need to disassemble when cleaning the filter cylinder temporarily, the replacement work of different filter cylinders can be completed only by rotating the connecting cylinder, the replacement of the filter cylinder of the compressor is convenient and rapid, the personnel of the replaced filter cylinder can disassemble and clean, the normal operation of the compressor is not influenced, and the working efficiency of the compressor is effectively improved.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of a twin-tub intake duct of an air conditioner compressor according to the present invention;
FIG. 2 is a schematic structural view of an air inlet tube provided in the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic structural diagram of a second embodiment of a twin-tub intake duct of an air conditioner compressor according to the present invention;
fig. 5 is a schematic structural diagram of a limiting plate provided in the present invention.
Reference numbers in the figures: 1. the clamping groove, 2, a fixed frame, 3, a movable groove, 4, a rotating rod, 5, a first connecting disc, 6, a clamping inner cylinder, 7, a first fixing hole, 8, a filter cylinder, 9, a filter screen, 10, a connecting pipe, 11, a second connecting disc, 12, a connecting block, 13, a connecting cylinder, 14, a connecting rod, 15, an adapter plate, 16, an air inlet pipe, 17, a connecting piece, 18, a front end pipe, 19, a second fixing hole, 20, a fixing groove, 21, a fixing cylinder, 22, a third connecting disc, 23, a rotating block, 24, a fixing screw, 25, an adjusting hole, 26, an adjusting ring, 27, a rotating handle, 28, a rotating shaft, 29, a limiting plate, 30, a fourth connecting disc, 31 and a connecting hose.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
First embodiment
Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of a dual-cylinder intake pipe of an air conditioner compressor according to a first embodiment of the present invention; FIG. 2 is a schematic structural view of an air inlet tube provided in the present invention; fig. 3 is an enlarged view of the portion a shown in fig. 2. The air condition compressor double-cylinder intake pipe includes: the method comprises the following steps: a connecting pipe 10;
the connecting device comprises a first connecting disc 5, the first connecting disc 5 is fixedly connected with one end of a connecting pipe 10, the top of the first connecting disc 5 is fixedly connected with a third connecting disc 22 through a screw, the inside of the third connecting disc 22 is fixedly connected with a fixing cylinder 21, the outside of the third connecting disc 22 is fixedly connected with a connecting block 12, the top of the connecting block 12 is rotatably connected with an adapter plate 15, the outside of the adapter plate 15 is fixedly connected with three connecting rods 14, one ends of the three connecting rods 14 are fixedly connected with connecting cylinders 13, the inside of the connecting cylinders 13 is slidably connected with a clamping inner cylinder 6, the inside of the clamping inner cylinder 6 is in threaded connection with a filter cylinder 8, the inner wall of the filter cylinder 8 is fixedly connected with a rotating rod 4, the first connecting disc 5 is matched with the diameter of the third connecting disc 22, and is internally provided with a threaded hole for fixing, the filter cylinder 8 is an existing device, the filter cartridge can be replaced by other cylindrical filter devices, and the outside of the filter cartridge 8 is provided with threads for being in threaded connection with the clamping inner cylinder 6.
The movable groove 3 has been seted up to the outside of connecting cylinder 13, the fixed frame 2 of the outside fixedly connected with of joint inner tube 6, draw-in groove 1 has been seted up to the inside of fixed frame 2, first fixed orifices 7 have been seted up to the inside of fixed frame 2, fixed frame 2 is L type frame for insert the inside of fixed slot 20 and fix.
The top of the third connecting disc 22 is provided with a fixing groove 20, the outside of the third connecting disc 22 is provided with a second fixing hole 19, and the second fixing hole 19 is arranged at a corresponding position of the fixing groove 20 and communicated with the inside of the fixing groove 20.
The other end fixedly connected with second connection pad 11 of joint inner tube 6, second connection pad 11 passes through screw fixedly connected with fourth connection pad 30, the one end fixedly connected with coupling hose 31 of fourth connection pad 30, coupling hose 31 is used for connecting the compressor.
The other end of the connecting pipe 10 is fixedly connected with an air inlet pipe 16, one end of the air inlet pipe 16 is fixedly connected with a front end pipe 18, and the diameter of the front end pipe 18 is larger than that of the air inlet pipe 16.
The outside fixedly connected with two connecting pieces 17 of intake pipe 16, connecting piece 17 is used for being connected fixedly with the compressor housing.
The inside fixedly connected with filter screen 9 of front end pipe 18, filter screen 9 sets up in the entrance of front end pipe 18.
The working principle of the double-cylinder air inlet pipe of the air-conditioning compressor provided by the invention is as follows:
when the air inlet pipe 16 of the air conditioner compressor is installed, the front end pipe 18 and one end of the air inlet pipe 16 are fixed, and then the first connecting disc 5 and the third connecting disc 22 are fixedly connected through screws;
then fixedly connecting the second connecting disc 11 with the fourth connecting disc 30, and connecting the other end of the connecting hose 31 with the compressor;
when the personnel need carry out the replacement work of cartridge filter 8, the fixed frame 2 of promotion shifts out the inside of fixed slot 20 behind the screw dismantlement, later promotes connecting cylinder 13 and rotates to make the cartridge filter 8 of replacement rotate the top of third connection pad 22, later promote the inside that fixed frame 2 entered into fixed slot 20, and insert the inside of second fixed orifices 19 through the screw, with the rigidity of joint inner tube 6, thereby accomplish the replacement of cartridge filter 8.
Compared with the prior art, the double-cylinder air inlet pipe of the air-conditioning compressor provided by the invention has the following beneficial effects:
through the fixed third connection pad 22 in the outside of the first connection pad 5 at connecting pipe 10 rear end, and through third connection pad 22 installation connecting block 12, and pinboard 15 through connecting block 12 top rotates and connects three connecting rod 14, later through connecting cylinder 13 installation joint inner tube 6 of connecting rod 14 installation setting, and install cartridge filter 8 through joint inner tube 6, thereby make the cartridge filter 8 of single installation increase to a plurality ofly, make personnel need not to dismantle when carrying out cartridge filter 8's cleanness temporarily, only need rotate connecting cylinder 13, can accomplish the replacement work of different cartridge filters 8, thereby make the cartridge filter 8's of compressor replacement convenient and fast, and the cartridge filter 8 personnel after the replacement can dismantle and wash, and can not influence the normal operating of compressor simultaneously, the effectual work efficiency that has improved the compressor.
Second embodiment
Referring to fig. 4 to 5, a second embodiment of the present application provides another air conditioner compressor twin-cylinder intake pipe based on the air conditioner compressor twin-cylinder intake pipe provided in the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the difference that the air condition compressor double-cylinder intake pipe that the second embodiment of this application provided lies in, the outside fixedly connected with adjustable ring 26 of front end pipe 18, a plurality of regulation holes 25 have been seted up to the one end of adjustable ring 26, regulation hole 25 is the annular and sets up, and inside is the thread groove.
The inside of the front end pipe 18 is rotatably connected with a rotating shaft 28, the outside of the rotating shaft 28 is fixedly connected with a limiting plate 29, and the limiting plate 29 is a circular plate and has a diameter smaller than the diameter of an inner groove of the front end pipe 18.
One end of the rotating shaft 28 is fixedly connected with a rotating block 23, the top of the rotating block 23 is fixedly connected with a rotating handle 27, the top of the rotating handle 27 is provided with a fixing screw 24, and the position of the fixing screw 24 corresponds to the position of the adjusting hole 25.
Compared with the prior art, the double-cylinder air inlet pipe of the air-conditioning compressor provided by the invention has the following beneficial effects:
through dismantling set screw 24 after, adjust rotation handle 27 to suitable position, thereby drive inside pivot 28 and rotate, drive limit plate 29 and rotate suitable angle, thereby the inside air input of control entering intake pipe 16, later through inserting set screw 24 and entering into the inside of regulation hole 25 fixed, thereby make personnel can adjust the air input of intake pipe 16 according to the demand, or airtight intake pipe 16 when the compressor does not use, avoid the inside debris such as dust, insect that get into of intake pipe 16.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides an air condition compressor double-cylinder intake pipe which characterized in that includes: a connecting tube (10);
a first connection disc (5), the first connection disc (5) is fixedly connected with one end of the connection pipe (10), the top of the first connecting disc (5) is fixedly connected with a third connecting disc (22) through a screw, a fixed cylinder (21) is fixedly connected inside the third connecting disc (22), a connecting block (12) is fixedly connected outside the third connecting disc (22), the top of the connecting block (12) is rotatably connected with an adapter plate (15), the outer part of the adapter plate (15) is fixedly connected with three connecting rods (14), one ends of the three connecting rods (14) are fixedly connected with connecting cylinders (13), the inside sliding connection of connecting cylinder (13) has joint inner tube (6), the inside threaded connection of joint inner tube (6) has cartridge filter (8), the inner wall fixedly connected with dwang (4) of cartridge filter (8).
2. The air-conditioning compressor double-cylinder air inlet pipe according to claim 1, characterized in that a movable groove (3) is formed in the outer portion of the connecting cylinder (13), a fixed frame (2) is fixedly connected to the outer portion of the clamping inner cylinder (6), a clamping groove (1) is formed in the inner portion of the fixed frame (2), and a first fixing hole (7) is formed in the inner portion of the fixed frame (2).
3. The double-cylinder air inlet pipe of the air conditioner compressor as claimed in claim 1, wherein the top of the third connecting disc (22) is opened with a fixing groove (20), and the outside of the third connecting disc (22) is opened with a second fixing hole (19).
4. The air conditioner compressor double-cylinder air inlet pipe as recited in claim 1, wherein the other end of the clamping inner cylinder (6) is fixedly connected with a second connecting disc (11), the second connecting disc (11) is fixedly connected with a fourth connecting disc (30) through a screw, and one end of the fourth connecting disc (30) is fixedly connected with a connecting hose (31).
5. The double-cylinder air inlet pipe of the air conditioner compressor as claimed in claim 1, wherein the other end of the connecting pipe (10) is fixedly connected with an air inlet pipe (16), and one end of the air inlet pipe (16) is fixedly connected with a front end pipe (18).
6. The double-cylinder air inlet pipe of the air conditioner compressor as claimed in claim 5, characterized in that two connecting pieces (17) are fixedly connected to the outside of the air inlet pipe (16).
7. The double-cylinder air inlet pipe of the air conditioner compressor as claimed in claim 5, characterized in that a filter screen (9) is fixedly connected to the inside of the front end pipe (18), and the filter screen (9) is arranged at the inlet of the front end pipe (18).
8. The double-cylinder air inlet pipe of the air conditioner compressor as claimed in claim 5, characterized in that an adjusting ring (26) is fixedly connected to the outside of the front end pipe (18), and one end of the adjusting ring (26) is provided with a plurality of adjusting holes (25).
9. The double-cylinder air inlet pipe of the air conditioner compressor as recited in claim 5, characterized in that the front end pipe (18) is rotatably connected with a rotating shaft (28), and the outer part of the rotating shaft (28) is fixedly connected with a limiting plate (29).
10. The double-cylinder air inlet pipe of the air conditioner compressor as claimed in claim 9, wherein one end of the rotating shaft (28) is fixedly connected with a rotating block (23), the top of the rotating block (23) is fixedly connected with a rotating handle (27), and the top of the rotating handle (27) is provided with a fixing screw (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210528888.0A CN114810552B (en) | 2022-05-16 | 2022-05-16 | Double-cylinder air inlet pipe of air conditioner compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210528888.0A CN114810552B (en) | 2022-05-16 | 2022-05-16 | Double-cylinder air inlet pipe of air conditioner compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114810552A true CN114810552A (en) | 2022-07-29 |
| CN114810552B CN114810552B (en) | 2024-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210528888.0A Active CN114810552B (en) | 2022-05-16 | 2022-05-16 | Double-cylinder air inlet pipe of air conditioner compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114810552B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682294A (en) * | 2020-12-28 | 2021-04-20 | 大丰全力机械有限公司 | Compressor air suction part structure and compressor |
| CN214742053U (en) * | 2021-01-27 | 2021-11-16 | 成都昊巨科技有限公司 | Screw compressor |
| CN216077572U (en) * | 2021-11-01 | 2022-03-18 | 山东凯恩真空技术有限公司 | Screw vacuum pump capable of cleaning dust |
-
2022
- 2022-05-16 CN CN202210528888.0A patent/CN114810552B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682294A (en) * | 2020-12-28 | 2021-04-20 | 大丰全力机械有限公司 | Compressor air suction part structure and compressor |
| CN214742053U (en) * | 2021-01-27 | 2021-11-16 | 成都昊巨科技有限公司 | Screw compressor |
| CN216077572U (en) * | 2021-11-01 | 2022-03-18 | 山东凯恩真空技术有限公司 | Screw vacuum pump capable of cleaning dust |
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| Publication number | Publication date |
|---|---|
| CN114810552B (en) | 2024-04-16 |
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