CN110541821A - Compressor and refrigerating unit with effect of reducing air supply pressure drop - Google Patents
Compressor and refrigerating unit with effect of reducing air supply pressure drop Download PDFInfo
- Publication number
- CN110541821A CN110541821A CN201910860825.3A CN201910860825A CN110541821A CN 110541821 A CN110541821 A CN 110541821A CN 201910860825 A CN201910860825 A CN 201910860825A CN 110541821 A CN110541821 A CN 110541821A
- Authority
- CN
- China
- Prior art keywords
- compressor
- air supply
- cavity
- air
- hole
- 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.)
- Pending
Links
- 230000000694 effects Effects 0.000 title abstract description 11
- 230000001502 supplementing effect Effects 0.000 claims abstract description 21
- 238000007906 compression Methods 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims abstract description 15
- 239000013589 supplement Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 3
- 210000003781 tooth socket Anatomy 0.000 abstract description 10
- 230000010349 pulsation Effects 0.000 abstract description 7
- 239000003507 refrigerant Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
- F04C18/107—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member with helical teeth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
- F04C29/0035—Equalization of pressure pulses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a compressor with an effect of reducing air supply pressure drop and a refrigerating unit. The compressor comprises a shell, a compression cavity is formed in the shell, and an air supplementing cavity is further arranged on the shell. According to the compressor and the refrigerating unit with the effect of reducing the air supply pressure drop, the air supply cavity is directly arranged on the shell, the problems that vibration caused by an air supply pipeline is reduced and the cost and the size of the unit are increased by additionally arranging the buffer tank on the air supply pipeline in the prior art are solved, the unit structure is effectively simplified, the unit cost is reduced, the diameter of the communicating hole is reduced, the communicating time and the communicating area between adjacent tooth sockets are reduced, and therefore the problem of gas leakage between the adjacent tooth sockets is reduced, the purposes of reducing pressure pulsation and reducing the pressure drop are achieved, the volume efficiency in the compression process of the compressor is improved, and the efficiency of the compressor and the refrigerating unit is improved.
Description
Technical Field
The invention relates to the technical field of compression devices, in particular to a compressor and a refrigerating unit with the effect of reducing air supply pressure drop.
Background
In the operation of the refrigerating unit under some working conditions, a part of refrigerant absorbs heat through expansion and evaporation to cool another part of gaseous refrigerant, and then the gaseous refrigerant enters the compression middle section of the compressor to continue to circulate, the cooled refrigerant obtains higher supercooling degree, the exhaust temperature is reduced, the refrigerating capacity is improved, and simultaneously, the application working condition range of the refrigerating unit is widened, in the operation process of the existing refrigerating unit, the refrigerant after evaporation and heat exchange enters a rotor tooth socket in the compression process through a unit air replenishing pipeline and a compressor air replenishing orifice and is added into the next compression and exhaust circulation, however, as the compressor tooth socket continuously pushes towards the exhaust end of the compressor, the pressure in a single tooth socket is increased in the process of communicating with the air replenishing orifice, and when two adjacent tooth sockets are communicated with the air replenishing orifice in sequence, the pressure is suddenly reduced, and the two tooth sockets are communicated through the diameter D of the air replenishing orifice, meanwhile, the pressure of the refrigerant which is fed into the compressor after cooling and heat exchange fluctuates in a period of time, so that in the air supply process, airflow pulsation exists in the whole air supply flow channel, the air supply quantity fluctuates, the volumetric efficiency of a rotor is reduced, and the problems of vibration and noise of the whole compressor and a unit are solved.
Disclosure of Invention
In order to solve the technical problem that the pressure drop is caused by the communication of air supply holes in the air supply process of the existing compressor, the compressor and the refrigerating unit which are provided with the air supply cavity and reduce the diameter of a communication hole communicated with the compression cavity on the premise of ensuring the air supply effect are provided.
The compressor comprises a shell, wherein a compression cavity is formed in the shell, an air supplementing cavity is further arranged on the shell, an air supplementing hole communicated with an air supplementing structure is formed in the air supplementing cavity, a communicating hole is formed in the air supplementing cavity and is arranged between the compression cavity and the communicating hole, and the diameter of the communicating hole is smaller than that of the air supplementing hole.
The number of the communication holes is multiple, all the communication holes are communicated with the air supplementing cavity, and the sum of the flow areas of all the communication holes is equal to the flow area of the air supplementing hole.
The compression intracavity is provided with the rotor, the week side of rotor is provided with the helical tooth, and all the intercommunicating pore is followed the helical direction of helical tooth arranges in proper order, and the rotor rotates the in-process, the helical tooth sweeps all simultaneously the intercommunicating pore.
The hole diameters of all the communication holes are equal.
The helical teeth have tooth crests, and the width of the tooth crests is smaller than the diameter of the communication holes.
And a space is formed between every two adjacent communication holes, and the size of the space is smaller than the diameter of each communication hole.
The air supply cavity is provided with a first side wall far away from the rotor and a second side wall close to the rotor, the air supply hole is formed in the first side wall, and the communication hole is formed in the second side wall.
A refrigerating unit comprises the compressor.
According to the compressor and the refrigerating unit with the effect of reducing the air supply pressure drop, the air supply cavity is directly arranged on the shell, the problems that vibration caused by an air supply pipeline is reduced and the cost and the size of the unit are increased by additionally arranging the buffer tank on the air supply pipeline in the prior art are solved, the unit structure is effectively simplified, the unit cost is reduced, the diameter of the communicating hole is reduced, the communicating time and the communicating area between adjacent tooth sockets are reduced, and therefore the problem of gas leakage between the adjacent tooth sockets is reduced, the purposes of reducing pressure pulsation and reducing the pressure drop are achieved, the volume efficiency in the compression process of the compressor is improved, and the efficiency of the compressor and the refrigerating unit is improved.
Drawings
FIG. 1 is a schematic structural diagram of a compressor and a refrigeration unit according to an embodiment of the present invention;
FIG. 2 is a perspective view of a communication hole on a rotor of an embodiment of a compressor and a refrigeration unit with a reduced make-up air pressure drop effect according to the present invention;
In the figure:
1. A housing; 2. a compression chamber; 3. an air supplement cavity; 4. air hole supplement; 5. a communicating hole; 6. a rotor; 7. a helical tooth.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The compressor shown in fig. 1 and 2 comprises a shell 1, a compression cavity 2 is formed inside the shell 1, an air supplement cavity 3 is further arranged on the shell 1, and refrigerant after evaporation and heat exchange enters the compressor through an air supplement pipeline of a unit and then enters the air supplement cavity 3, so that the refrigerant is enabled to be less influenced by airflow pulsation in the air supplement pipeline of the unit before passing through an air supplement hole of the compressor, and is also less influenced by airflow pulsation caused by air recharging after a rotor tooth socket in the compression process is communicated with the air supplement hole, stability of the air supplement process is ensured, vibration and noise caused by the airflow are reduced, an air supplement hole 4 communicated with an air supplement structure is arranged on the air supplement cavity 3, a communication hole 5 is arranged between the air supplement cavity 3 and the compression cavity 2, and the problems that vibration caused by the air supplement pipeline is reduced and cost and size of the unit are increased by additionally arranging a buffer tank on the air supplement pipeline in the prior art are solved, the compressor unit has the advantages that the structure of the compressor unit is effectively simplified, the cost of the compressor unit is reduced, the diameter of the communicating hole 5 is smaller than that of the gas supplementing hole 4, the diameter of the communicating hole 5 is reduced, the communicating time and the communicating area between adjacent tooth grooves are reduced, and therefore the problem of gas leakage between the adjacent tooth grooves is reduced, the purposes of reducing pressure pulsation and reducing pressure drop are achieved, the volume efficiency of the compressor unit in the compression process is improved, and the efficiency of the compressor and the efficiency of the refrigerating unit are improved.
The number of the communication holes 5 is multiple, all the communication holes 5 are communicated with the air supply cavity 3, the sum of the flow areas of all the communication holes 5 is equal to the flow area of the air supply hole 4, and the air supply effect of the compressor is guaranteed.
The compressor is characterized in that a rotor 6 is arranged in the compression cavity 2, helical teeth 7 are arranged on the peripheral side of the rotor 6, all the communication holes 5 are arranged in sequence along the spiral direction of the helical teeth 7, in the rotating process of the rotor 6, the helical teeth 7 sweep all the communication holes 5 simultaneously, so that the gas supplementing cavity 3 of the compressor can supplement gas only for one helical tooth 7 groove in the gas supplementing process, and when the helical teeth 7 sweep the communication holes 5, the communication time and the communication area between two adjacent helical teeth 7 grooves through the gas supplementing cavity 3 can be reduced as much as possible, thereby reducing the airflow pulsation, reducing the vibration and noise caused by gas supplementing, reducing the gas leakage between adjacent tooth grooves, and improving the volumetric efficiency of the rotor 6 so as to improve the efficiency of the compressor and the unit.
The aperture of all the communicating holes 5 is equal, the air supplement pressure at each communicating hole 5 is ensured to be the same, and the air supplement effect is further ensured.
the spiral teeth 7 have tooth tops, the width of the tooth tops is smaller than the diameter of the communicating holes 5, the communicating time of the communicating holes 5 is prolonged, and therefore the air supplementing effect is guaranteed.
The adjacent two communication holes 5 have a space therebetween, and the size of the space is smaller than the diameter of the communication holes 5.
The air supply cavity 3 is provided with a first side wall far away from the rotor 6 and a second side wall close to the rotor 6, the air supply hole 4 is formed in the first side wall, and the communication hole 5 is formed in the second side wall, so that the lengths of the air supply hole 4 and the communication hole 5 are reduced as far as possible, and the air supply effect is improved.
a refrigerating unit comprises the compressor.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A compressor comprising a shell (1), a compression chamber (2) being formed inside said shell (1), characterized in that: the compressor is characterized in that an air supplementing cavity (3) is further arranged on the shell (1), an air supplementing hole (4) communicated with an air supplementing structure is formed in the air supplementing cavity (3), a communicating hole (5) is formed between the air supplementing cavity (3) and the compression cavity (2), and the diameter of the communicating hole (5) is smaller than that of the air supplementing hole (4).
2. The compressor of claim 1, wherein: the number of the communication holes (5) is multiple, all the communication holes (5) are communicated with the air supplement cavity (3), and the sum of the flow areas of all the communication holes (5) is equal to the flow area of the air supplement hole (4).
3. The compressor of claim 2, wherein: be provided with rotor (6) in compression chamber (2), the week side of rotor (6) is provided with helical tooth (7), and all intercommunicating pore (5) are followed the helical direction of helical tooth (7) arranges in proper order, and rotor (6) rotate the in-process, helical tooth (7) sweep all simultaneously intercommunicating pore (5).
4. A compressor according to claim 3, wherein: the diameters of the communicating holes (5) are equal.
5. The compressor of claim 4, wherein: the helical teeth (7) have tooth crests, the width of which is less than the diameter of the communication holes (5).
6. The compressor of claim 4, wherein: and a space is arranged between every two adjacent communication holes (5), and the size of the space is smaller than the diameter of each communication hole (5).
7. A compressor according to claim 3, wherein: the air supply cavity (3) is provided with a first side wall far away from the rotor (6) and a second side wall close to the rotor (6), the air supply hole (4) is formed in the first side wall, and the communication hole (5) is formed in the second side wall.
8. A refrigeration unit, characterized by: comprising a compressor according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860825.3A CN110541821A (en) | 2019-09-11 | 2019-09-11 | Compressor and refrigerating unit with effect of reducing air supply pressure drop |
| PCT/CN2019/127968 WO2021047107A1 (en) | 2019-09-11 | 2019-12-24 | Compressor and refrigeration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860825.3A CN110541821A (en) | 2019-09-11 | 2019-09-11 | Compressor and refrigerating unit with effect of reducing air supply pressure drop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110541821A true CN110541821A (en) | 2019-12-06 |
Family
ID=68713310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910860825.3A Pending CN110541821A (en) | 2019-09-11 | 2019-09-11 | Compressor and refrigerating unit with effect of reducing air supply pressure drop |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110541821A (en) |
| WO (1) | WO2021047107A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047107A1 (en) * | 2019-09-11 | 2021-03-18 | 珠海格力电器股份有限公司 | Compressor and refrigeration unit |
| CN113586640A (en) * | 2021-07-20 | 2021-11-02 | 青岛海信日立空调系统有限公司 | Compressor buffer design method, compressor buffer and compressor |
| WO2024032534A1 (en) * | 2022-08-08 | 2024-02-15 | 谷轮环境科技（苏州）有限公司 | Compression mechanism and scroll compressor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050084397A1 (en) * | 2003-10-17 | 2005-04-21 | Denso Corporation | Gas compressor |
| DE102009023507A1 (en) * | 2009-06-02 | 2010-12-09 | Mosemann, Dieter, Dr. | Screw type compressor aggregate i.e. pressurized air compressor aggregate, has pressure line exhibiting trap, where proportion between common geometrical chamber volumes in front of trap is larger than dimension of operating chamber |
| CN101979880A (en) * | 2010-04-26 | 2011-02-23 | 上海维尔泰克螺杆机械有限公司 | Screw compressor |
| CN105065281A (en) * | 2015-08-05 | 2015-11-18 | 同济大学 | Multi-exhaust-pressure screw type compressor |
| CN106949051A (en) * | 2017-03-20 | 2017-07-14 | 珠海格力电器股份有限公司 | Slide valve for compressor and screw compressor with slide valve |
| CN110185621A (en) * | 2019-05-20 | 2019-08-30 | 珠海凌达压缩机有限公司 | Compressor and air conditioning unit |
| CN210599401U (en) * | 2019-09-11 | 2020-05-22 | 珠海格力电器股份有限公司 | Compressor and refrigerating unit with effect of reducing air supply pressure drop |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1236173A1 (en) * | 1984-12-10 | 1986-06-07 | Всесоюзный Научно-Исследовательский Институт Горной Механики Им.М.М.Федорова | Lubrication system for screw compressor |
| CN107401511A (en) * | 2017-08-09 | 2017-11-28 | 珠海凌达压缩机有限公司 | Pump body structure and compressor with same |
| CN107740769A (en) * | 2017-08-30 | 2018-02-27 | 珠海格力电器股份有限公司 | Variable frequency screw compressor and air conditioner |
| CN108061039A (en) * | 2017-10-23 | 2018-05-22 | 武汉凌达压缩机有限公司 | Air supplement structure of compressor and compressor |
| CN208816329U (en) * | 2018-09-19 | 2019-05-03 | 珠海凌达压缩机有限公司 | Compressor and air conditioner |
| CN110541821A (en) * | 2019-09-11 | 2019-12-06 | 珠海格力电器股份有限公司 | Compressor and refrigerating unit with effect of reducing air supply pressure drop |
-
2019
- 2019-09-11 CN CN201910860825.3A patent/CN110541821A/en active Pending
- 2019-12-24 WO PCT/CN2019/127968 patent/WO2021047107A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050084397A1 (en) * | 2003-10-17 | 2005-04-21 | Denso Corporation | Gas compressor |
| DE102009023507A1 (en) * | 2009-06-02 | 2010-12-09 | Mosemann, Dieter, Dr. | Screw type compressor aggregate i.e. pressurized air compressor aggregate, has pressure line exhibiting trap, where proportion between common geometrical chamber volumes in front of trap is larger than dimension of operating chamber |
| CN101979880A (en) * | 2010-04-26 | 2011-02-23 | 上海维尔泰克螺杆机械有限公司 | Screw compressor |
| CN105065281A (en) * | 2015-08-05 | 2015-11-18 | 同济大学 | Multi-exhaust-pressure screw type compressor |
| CN106949051A (en) * | 2017-03-20 | 2017-07-14 | 珠海格力电器股份有限公司 | Slide valve for compressor and screw compressor with slide valve |
| CN110185621A (en) * | 2019-05-20 | 2019-08-30 | 珠海凌达压缩机有限公司 | Compressor and air conditioning unit |
| CN210599401U (en) * | 2019-09-11 | 2020-05-22 | 珠海格力电器股份有限公司 | Compressor and refrigerating unit with effect of reducing air supply pressure drop |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047107A1 (en) * | 2019-09-11 | 2021-03-18 | 珠海格力电器股份有限公司 | Compressor and refrigeration unit |
| CN113586640A (en) * | 2021-07-20 | 2021-11-02 | 青岛海信日立空调系统有限公司 | Compressor buffer design method, compressor buffer and compressor |
| WO2024032534A1 (en) * | 2022-08-08 | 2024-02-15 | 谷轮环境科技（苏州）有限公司 | Compression mechanism and scroll compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021047107A1 (en) | 2021-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110541821A (en) | Compressor and refrigerating unit with effect of reducing air supply pressure drop | |
| EP2868999A2 (en) | Refrigeration cycle of refrigerator | |
| CN210599401U (en) | Compressor and refrigerating unit with effect of reducing air supply pressure drop | |
| EP2940300B1 (en) | Hermetic compressor and refrigeration device with same | |
| WO2014083901A1 (en) | Compressor, refrigeration cycle device, and heat pump hot-water supply device | |
| CN105392996B (en) | Screw compressor | |
| WO2022001019A1 (en) | Compressor and refrigerating device | |
| CN209344946U (en) | Motor and compressor | |
| CN110345075A (en) | Screw compressor and heat pump system | |
| US11130389B2 (en) | Compressor, air conditioning system and vehicle | |
| JP5599514B2 (en) | Two-stage compressor and heat pump device | |
| CN108035879A (en) | The increasing enthalpy structure and screw compressor of compressor | |
| CN211259055U (en) | Vapor compressor and air conditioning unit | |
| CN108168155B (en) | Condenser for refrigeration equipment, refrigeration system and refrigeration equipment | |
| CN109974363B (en) | Air-cooled refrigerator | |
| CN109974378B (en) | Refrigerator with a refrigerator body | |
| KR20050002652A (en) | The refrigerator for improvement on heat exchange efficiency | |
| CN215860800U (en) | Refrigerating machine oil adding device of screw compressor | |
| CN105333533A (en) | Air condensing units and air conditioner | |
| CN204386889U (en) | Rotor compressor and pump assembly thereof | |
| CN104101037B (en) | Water heat exchanging air conditioner | |
| CN221375811U (en) | Air conditioner | |
| CN207751203U (en) | A kind of new refrigerator refrigerating plant | |
| CN218846341U (en) | Air conditioner structure | |
| CN218563901U (en) | Compressor capable of cooling refrigeration oil and air conditioner formed by compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |