CN115370559A - Metal corrugated pipe type special gas compressor - Google Patents
Metal corrugated pipe type special gas compressor Download PDFInfo
- Publication number
- CN115370559A CN115370559A CN202211102099.7A CN202211102099A CN115370559A CN 115370559 A CN115370559 A CN 115370559A CN 202211102099 A CN202211102099 A CN 202211102099A CN 115370559 A CN115370559 A CN 115370559A
- Authority
- CN
- China
- Prior art keywords
- corrugated pipe
- special gas
- metal corrugated
- air inlet
- gas compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 title claims abstract description 87
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 235000014676 Phragmites communis Nutrition 0.000 claims description 28
- 238000009423 ventilation Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 78
- 239000001307 helium Substances 0.000 description 6
- 229910052734 helium Inorganic materials 0.000 description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 244000273256 Phragmites communis Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/02—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having bellows
- F04B45/027—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having bellows having electric drive
-
- 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
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
Abstract
The invention discloses a metal bellows type special gas compressor, which comprises: a housing; the air inlet mechanism and the air outlet mechanism are arranged on the shell; the two ends of the metal corrugated pipe are respectively connected with the shell and the support cover in a sealing way; and the driving assembly is connected with the support cover and drives the support cover to move. The driving component pushes the supporting cover at the end of the metal corrugated pipe. When the metal corrugated pipe is pulled down and extended, the internal pressure of the metal corrugated pipe is reduced, the air inlet channel is opened, and the special gas enters the metal corrugated pipe. When the metal corrugated pipe is compressed upwards, the special gas in the metal corrugated pipe is also compressed, the pressure is increased, the exhaust passage is opened, and the pressurized special gas is exhausted from the exhaust pipe and enters a supplied low-temperature system.
Description
Technical Field
The invention relates to the fields of ultralow temperature equipment, a special gas supply and treatment system and precious gas transportation and application, in particular to a metal corrugated pipe type special gas compressor.
Background
In the scientific research and special gas industry field, special gas such as helium and the like is often used, its chemical and physical properties are unique and its price is very expensive. The price of high purity helium can be as high as 2.5 to 3.5 ten thousand yuan per liter (under standard conditions). In addition, high-precision instruments and equipment using helium three as a working medium, such as ultra-low temperature helium three systems or dilution refrigerators, require that the purity of helium three is very high and cannot be polluted, which means that equipment or machinery using these special expensive gases cannot have any leakage or other impurities mixed in. In ultra-low temperature equipment and systems for transporting and operating these specialty gases, it is often necessary to pressurize these specialty gases. Therefore, the use of the common piston type gas compressor or the impeller type gas compressor can not meet the use requirements of the special gases. Because the piston type gas compressor is in operation, in order to enable the compressor to work normally, lubricating oil is indispensable, when the piston moves in the cylinder, corresponding lubrication must be carried out between the piston and the cylinder, and the lubricating oil forms an oil film in the use process, so that impurities are easily introduced into special gas. The small clearance between the vane and the casing of the impeller machine cannot meet the strict requirement of special expensive gas on sealing. In summary, the gas compressor of the prior art has difficulty in meeting the requirements of foreign matter and sealing property for the compression of special gas.
Disclosure of Invention
The invention aims to solve the technical problem that the gas compressor in the prior art is difficult to meet the requirements of the gas compressor on impurities and sealing property.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a metal bellows type special gas compressor, comprising:
a housing;
the air inlet mechanism and the air outlet mechanism are fixed on the shell;
the metal corrugated pipe and the support cover are positioned in the shell; two ends of the metal corrugated pipe are respectively connected with the shell and the support cover in a sealing way; the metal corrugated pipe is made of electropolished stainless steel;
the driving assembly is connected with the support cover and drives the support cover to move;
when the supporting cover drives the metal corrugated pipe to be pulled down and extended, the air inlet channel of the air inlet mechanism is opened, so that the special gas at the air inlet mechanism enters the metal corrugated pipe;
when the supporting cover drives the metal corrugated pipe to compress upwards, an exhaust passage of the exhaust mechanism is opened, so that the special gas in the metal corrugated pipe is exhausted to the exhaust mechanism.
The metal bellows type special gas compressor, wherein, the drive assembly includes:
the driving motor, the rotating shaft, the crank rod, the connecting rod and the hinge seat;
the driving motor is fixed outside the shell, two ends of the crank rod are respectively and rotatably connected with the rotating shaft and the connecting rod, two ends of the connecting rod are respectively and rotatably connected with the crank rod and the hinge seat, and the hinge seat is fixed on the support cover.
The metal bellows type special gas compressor, wherein, be provided with the air inlet on the upper shell cover of shell, air inlet mechanism includes:
the air inlet reed is positioned in the cavity of the metal corrugated pipe and covers the air inlet;
the air inlet pipe is fixed outside the upper shell cover of the shell and used for guiding the special gas to the air inlet;
wherein the intake reed is bendable inward to open the intake passage.
The metal corrugated pipe type special gas compressor is characterized in that the gas inlet is a double gas inlet.
The metal bellows type special gas compressor, wherein, be provided with the gas vent on the upper shell cover of shell, exhaust mechanism includes:
the exhaust reed is positioned outside the cavity of the metal corrugated pipe and covers the exhaust port;
the exhaust pipe is fixed outside the upper shell cover of the shell and guides out the special gas exhausted by the exhaust port;
wherein the discharge reed is outwardly bendable to open the discharge passage.
The metal bellows type special gas compressor is characterized in that the exhaust port is a double exhaust port.
The metal corrugated pipe type special gas compressor is characterized in that a ventilation groove is formed in the side face of the shell.
The metal corrugated pipe type special gas compressor is characterized in that the pressure ratio of the metal corrugated pipe type special gas compressor is 2.5-4.0.
The metal bellows type special gas compressor is characterized in that the special gas comprises 3He gas.
Has the advantages that: the driving component pushes the support cover at the end of the metal corrugated pipe to do vertical linear motion. When the metal corrugated pipe is pulled down and extended, the internal pressure of the metal corrugated pipe is reduced, the air inlet channel is opened (at the moment, the air outlet channel is closed), and the special gas enters the metal corrugated pipe. When the metal corrugated pipe is compressed upwards, the special gas in the metal corrugated pipe is also compressed, the pressure is increased, the exhaust channel is opened (at the moment, the air inlet channel is closed), and the pressurized special gas is discharged from the exhaust pipe and enters a supplied low-temperature system.
Drawings
FIG. 1 is a schematic view of the overall structure of a metal bellows type special gas compressor according to the present invention.
FIG. 2 is a schematic sectional view of a metal bellows type special gas compressor according to the present invention.
FIG. 3 is a schematic view of the metal bellows type special gas compressor of the present invention when sucking gas.
FIG. 4 is a schematic view of the structure of the metal bellows type special gas compressor of the present invention when discharging gas.
Description of the reference numerals:
1. a housing; 11. a ventilation slot; 12. an air inlet; 13. an exhaust port; 2. an air intake mechanism; 21. an intake reed; 22. an air inlet pipe; 3. an exhaust mechanism; 31. an exhaust reed; 32. an exhaust pipe; 4. a metal bellows; 5. supporting the cover; 6. a drive assembly; 61. a connecting rod; 62. a crank lever; 63. a rotating shaft; 64. a drive motor; 66. a hinge seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Referring to fig. 1-4, the present invention provides embodiments of a metal bellows type special gas compressor.
As shown in fig. 1 to 2, the metal bellows type special gas compressor of the present invention includes:
a housing 1;
the air inlet mechanism 2 and the air outlet mechanism 3 are arranged on the shell 1;
the metal corrugated pipe 4 and the support cover 5 are both positioned in the shell 1; two ends of the metal corrugated pipe 4 are respectively connected with the shell 1 and the support cover 5 in a sealing way; the metal corrugated pipe 4 is made of electropolished stainless steel;
the driving component 6 is connected with the support cover 5 and drives the support cover 5 to move;
when the supporting cover 5 drives the metal corrugated pipe 4 to be pulled down and extended, the gas inlet channel of the gas inlet mechanism 2 is opened, so that the special gas at the gas inlet mechanism 2 enters the metal corrugated pipe 4;
when the supporting cover 5 drives the metal corrugated pipe 4 to compress upwards, the exhaust passage of the exhaust mechanism 3 is opened, so that the special gas in the metal corrugated pipe 4 is exhausted to the exhaust mechanism 3.
It is worth noting that, since the metal bellows 4 is made of electropolished stainless steel, the inside is extremely clean and there is no risk of impurities being mixed into and contaminating the specialty gas. Besides, the stainless steel has good heat insulation performance, the compression process of the special gas is close to an ideal heat insulation isentropic compression process, the utilization rate of energy is higher, and the utilization of the energy is facilitated. The metal bellows 4 type special gas compressor can be applied to a dry type ultralow temperature dilution refrigerator and a helium three-system, and 3He gas needs to be returned to the ultralow temperature equipment. In order to ensure that the 3He gas can be smoothly and quickly liquefied in the ultralow-temperature equipment, the metal bellows 4 type special gas compressor is used. The compressor has good use effect in a multi-type dilution refrigerator, completely achieves the effects of quickly pressurizing and quickly liquefying 3He gas, and ensures the reliable work of the whole dilution refrigerator.
The inlet means 2 are similar to the outlet means 3 except that the direction of gas flow is different. The driving assembly 6 pushes the supporting cover 5 at the end of the metal corrugated pipe 4 to move. When the metal corrugated pipe 4 is pulled down and extended, the internal pressure of the metal corrugated pipe 4 is reduced, the air inlet channel is opened (at the moment, the air outlet channel is closed), and the special gas enters the metal corrugated pipe 4. When the metal bellows 4 is compressed upward, the special gas in the metal bellows 4 is also compressed, the pressure is increased, the exhaust passage is opened (at this time, the intake passage is closed), and the pressurized special gas is discharged from the exhaust pipe 32 into the supplied cryogenic system.
In conclusion, the special gas compressor does not need lubricating oil, impurities cannot be introduced due to the lubricating oil, and the sealing performance is good.
In addition, the support cover 5 does reciprocating motion, and the weight of the whole gas compressor is reduced because the mass of the whole corrugated pipe is smaller and a crank with large mass is not needed for carrying out inertia wheel counterweight.
In a preferred implementation of the embodiment of the present invention, as shown in fig. 1-2, the driving assembly 6 includes:
the hinge assembly comprises a driving motor 64, a rotating shaft 63, a crank rod 62, a connecting rod 61 and a hinge seat 66, wherein the driving motor 64 is fixed outside the shell 1, two ends of the crank rod 62 are respectively and rotatably connected with the rotating shaft 63 and the connecting rod 61, two ends of the connecting rod 61 are respectively and rotatably connected with the crank rod 62 and the hinge seat 66, and the hinge seat 66 is fixed on the support cover 5.
Specifically, the driving motor 64 drives the rotating shaft 63 to rotate, the crank rod 62 also rotates around the rotating shaft 63, the crank rod 62 and the connecting rod 61 are driven at the same time, and the connecting rod 61 pushes the support cover 5 at the end of the metal corrugated pipe 4 to do linear motion up and down. When the metal corrugated pipe 4 is pulled down and extended, the internal pressure of the metal corrugated pipe 4 is reduced, the air inlet channel is opened, and the special gas enters the metal corrugated pipe 4. When the connecting rod 61 moves upward through the bottom dead center, the metal bellows 4 is compressed, and certainly, the special gas in the metal bellows 4 is also compressed, the pressure is increased, when the connecting rod 61 approaches the top dead center, the exhaust passage is opened under the action of the set pressure difference, and the pressurized special gas is discharged from the exhaust pipe 32 and enters the supplied low-temperature system.
In addition, the connecting rod 61 drives the corrugated pipe to push the support cover 5 to reciprocate, and the weight of the whole corrugated pipe is small, so that a crank rod 62 with large mass is not needed for balancing, and the weight of the whole gas compressor is reduced.
In a preferred implementation of the embodiment of the present invention, as shown in fig. 1 to 4, an air inlet 12 is provided on an upper housing cover of the housing 1, and the air inlet mechanism 2 includes:
an intake reed 21 covering the inside of the intake port 12;
the air inlet pipe 22 is arranged outside an upper shell cover of the shell 1, and the air inlet pipe 22 is used for guiding special gas to the air inlet 12;
wherein the intake reed 21 can be bent inward to open the intake passage.
Specifically, one side of the intake reed 21 is fixed to the inside of the upper part of the housing 1 by a bolt, and the other side of the intake reed 21 is bent and deformed so that the intake reed 21 closes and opens the intake port 12 according to the change in the air pressure, and when the pressure difference between both sides of the intake reed 21 is sufficient to overcome the elastic force of the intake reed 21 itself, the intake reed 21 is pushed open to take a bent shape. The inlet 12 is a double inlet, and two inlet reeds 21 may be used to cover the double inlets, respectively.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 1 to 4, an exhaust port 13 is disposed on an upper cover of the housing 1, and the exhaust mechanism 3 includes:
an exhaust pipe 32 disposed outside the upper case cover of the housing 1, the exhaust pipe 32 discharging the special gas discharged from the exhaust port 13;
wherein discharge reed 31 is outwardly bendable to open the discharge passage.
Specifically, one side of discharge reed 31 is fixed to the outside of the upper part of housing 1 by a bolt, and the other side of discharge reed 31 is bent and deformed so that discharge reed 31 closes and opens discharge port 13 in accordance with the change in air pressure, and when the pressure difference between both sides of discharge reed 31 is sufficient to overcome the elastic force of discharge reed 31 itself, discharge reed 31 is pushed open and takes a bent shape. The exhaust port 13 is a double exhaust port, and two exhaust reeds 31 may be used to cover the double exhaust ports, respectively.
It should be noted that a double air inlet, a double air inlet spring piece, a double air outlet and a double air outlet spring piece structure are adopted. No matter the double air inlets adopt double air inlet spring pieces or the double exhaust ports adopt double air inlet spring pieces, the two spring pieces with different elasticity are respectively arranged on the double air inlets, or the two spring pieces with different elasticity are respectively arranged on the double exhaust ports, in order to meet the requirements of quick air inlet and air exhaust, under the condition of air exhaust, when the interior of the corrugated pipe is close to the required pressure, the pressure difference of the air pressures on the two sides of the spring pieces is smaller, the spring piece with larger elasticity (softer) on the air exhaust port 13 is opened firstly, the spring piece with smaller elasticity (harder) on the air exhaust port 13 is not opened, the air exhaust amount is smaller, after the required pressure is reached, the pressure difference of the air pressures on the two sides of the spring piece is larger, the two spring pieces are both opened, the air exhaust amount is larger, the air exhaust has sufficient working time, the air cannot be exhausted before the metal corrugated pipe is completely compressed, but the compression process and the air exhaust process of the metal corrugated pipe is matched with each other, the exhaust process of the spring pieces is perfectly completed, and the air exhaust process is realized by the two spring pieces with different elasticity, and the automatic air exhaust amount is adjusted. Double intake is a similar process and is not repeated here. In conclusion, the special gas compressor with the novel structure is very suitable for pressurizing and conveying expensive special gas which requires cleanness.
In a preferred implementation of the embodiment of the present invention, as shown in fig. 1, the side surface of the housing 1 is provided with a ventilation groove 11.
Specifically, the ventilation groove 11 can reduce the mass of the casing 1, making the entire gas compressor lighter. In addition, the ventilation grooves 11 facilitate heat dissipation.
In a preferred implementation manner of the embodiment of the invention, the pressure increase ratio of the metal bellows 4 type special gas compressor is 2.5-4.0. Specifically, the pressure increase ratio of the special gas compressor can be designed to be 2.5-4.0 according to the use requirement.
It will be understood that the invention is not limited to the examples described above, but that modifications and variations will occur to those skilled in the art in light of the above teachings, and that all such modifications and variations are considered to be within the scope of the invention as defined by the appended claims.
Claims (9)
1. A metal bellows type special gas compressor is characterized by comprising:
a housing;
the air inlet mechanism and the air outlet mechanism are fixed on the shell;
the metal corrugated pipe and the support cover are both positioned in the shell; two ends of the metal corrugated pipe are respectively connected with the shell and the support cover in a sealing manner; the metal corrugated pipe is made of electropolished stainless steel;
the driving assembly is connected with the support cover and drives the support cover to move;
when the supporting cover drives the metal corrugated pipe to be pulled down and extended, the air inlet channel of the air inlet mechanism is opened, so that the special gas at the air inlet mechanism enters the metal corrugated pipe;
when the supporting cover drives the metal corrugated pipe to compress upwards, an exhaust passage of the exhaust mechanism is opened, so that the special gas in the metal corrugated pipe is exhausted to the exhaust mechanism.
2. The metal bellows specialty gas compressor according to claim 1, wherein said drive assembly comprises:
the device comprises a driving motor, a rotating shaft, a crank rod, a connecting rod and a hinge seat;
the driving motor is fixed outside the shell, two ends of the crank rod are respectively and rotatably connected with the rotating shaft and the connecting rod, two ends of the connecting rod are respectively and rotatably connected with the crank rod and the hinge seat, and the hinge seat is fixed on the support cover.
3. The metal bellows type special gas compressor as claimed in claim 1, wherein an air inlet is provided on an upper shell cover of the shell, and the air inlet mechanism comprises:
the air inlet reed is positioned in the cavity of the metal corrugated pipe and covers the air inlet;
the air inlet pipe is fixed outside the upper shell cover of the shell and used for guiding the special gas to the air inlet;
wherein the intake reed is bendable inward to open the intake passage.
4. A metal bellows type specialty gas compressor according to claim 3,
the air inlets are double air inlets.
5. The metal bellows type special gas compressor as claimed in claim 1, wherein a discharge port is provided on an upper cover of the housing, and the discharge mechanism comprises:
the exhaust reed is positioned outside the cavity of the metal corrugated pipe and covers the exhaust port;
the exhaust pipe is fixed outside the upper shell cover of the shell and guides out the special gas exhausted by the exhaust port;
wherein the discharge reed is outwardly bendable to open the discharge passage.
6. The metal bellows specialty gas compressor as claimed in claim 5 wherein said discharge port is a dual discharge port.
7. The metal bellows type special gas compressor as claimed in any one of claims 1 to 6, wherein a ventilation groove is provided on a side surface of the housing.
8. The metal bellows type special gas compressor as claimed in any one of claims 1 to 6, wherein the pressure increase ratio of the metal bellows type special gas compressor is 2.5 to 4.0.
9. The metal bellows type specialty gas compressor of any one of claims 1 to 6, wherein said specialty gas comprises 3He gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211102099.7A CN115370559B (en) | 2022-09-09 | 2022-09-09 | Metal bellows type special gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211102099.7A CN115370559B (en) | 2022-09-09 | 2022-09-09 | Metal bellows type special gas compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115370559A true CN115370559A (en) | 2022-11-22 |
| CN115370559B CN115370559B (en) | 2024-03-22 |
Family
ID=84071474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211102099.7A Active CN115370559B (en) | 2022-09-09 | 2022-09-09 | Metal bellows type special gas compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115370559B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5119007U (en) * | 1974-07-29 | 1976-02-12 | ||
| JPS51124605U (en) * | 1975-04-04 | 1976-10-08 | ||
| DE8906387U1 (en) * | 1989-05-23 | 1989-07-20 | Interatom Gmbh, 5060 Bergisch Gladbach, De | |
| JP2003206866A (en) * | 2002-01-12 | 2003-07-25 | Toru Kobayashi | Bellows type energy amplifying pump |
| CN1632312A (en) * | 2004-12-27 | 2005-06-29 | 西安交通大学 | Method for employing corrugated pipe as working chamber of positive displacement type compressor |
| KR20080075486A (en) * | 2008-07-28 | 2008-08-18 | 곽철훈 | Accordion tube type air pump |
| CN202417893U (en) * | 2012-01-05 | 2012-09-05 | 鲍满腔 | Cylinder body of compressor |
| CN105179209A (en) * | 2015-10-26 | 2015-12-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Vent valve assembly and compressor with same |
| CN110566438A (en) * | 2019-10-08 | 2019-12-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Valve bank assembly, compressor and refrigerator |
-
2022
- 2022-09-09 CN CN202211102099.7A patent/CN115370559B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5119007U (en) * | 1974-07-29 | 1976-02-12 | ||
| JPS51124605U (en) * | 1975-04-04 | 1976-10-08 | ||
| DE8906387U1 (en) * | 1989-05-23 | 1989-07-20 | Interatom Gmbh, 5060 Bergisch Gladbach, De | |
| JP2003206866A (en) * | 2002-01-12 | 2003-07-25 | Toru Kobayashi | Bellows type energy amplifying pump |
| CN1632312A (en) * | 2004-12-27 | 2005-06-29 | 西安交通大学 | Method for employing corrugated pipe as working chamber of positive displacement type compressor |
| KR20080075486A (en) * | 2008-07-28 | 2008-08-18 | 곽철훈 | Accordion tube type air pump |
| CN202417893U (en) * | 2012-01-05 | 2012-09-05 | 鲍满腔 | Cylinder body of compressor |
| CN105179209A (en) * | 2015-10-26 | 2015-12-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Vent valve assembly and compressor with same |
| CN110566438A (en) * | 2019-10-08 | 2019-12-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Valve bank assembly, compressor and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115370559B (en) | 2024-03-22 |
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