WO2024031787A1 - Pressure balance structure of carbon dioxide scroll compressor - Google Patents

Pressure balance structure of carbon dioxide scroll compressor Download PDF

Info

Publication number
WO2024031787A1
WO2024031787A1 PCT/CN2022/120208 CN2022120208W WO2024031787A1 WO 2024031787 A1 WO2024031787 A1 WO 2024031787A1 CN 2022120208 W CN2022120208 W CN 2022120208W WO 2024031787 A1 WO2024031787 A1 WO 2024031787A1
Authority
WO
WIPO (PCT)
Prior art keywords
scroll
pressure
chamber
channel
exhaust
Prior art date
Application number
PCT/CN2022/120208
Other languages
French (fr)
Chinese (zh)
Inventor
肖启能
陈美华
李剑锋
黄惊云
曹丹
Original Assignee
深圳昂湃技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳昂湃技术有限公司 filed Critical 深圳昂湃技术有限公司
Publication of WO2024031787A1 publication Critical patent/WO2024031787A1/en

Links

Images

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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • 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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • 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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0253—Details concerning the base
    • F04C18/0261—Details of the ports, e.g. location, number, geometry
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • 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
    • 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
    • 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
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type

Definitions

  • the invention relates to a compressor, in particular to a pressure balance structure of a carbon dioxide scroll compressor.
  • the main purpose of the present invention is to prevent the compressor from starting up and shutting down the protection mechanism due to excessive pressure in the high-pressure compression chamber, thereby ensuring that the compressor can operate normally for a long time.
  • the present invention provides a pressure balance structure of a carbon dioxide scroll compressor, which includes a compressor body, a scroll assembly and a one-way valve.
  • the compressor body has a scroll chamber and a communicating scroll.
  • the scroll assembly is located in the scroll cavity and includes a fixed scroll, a moving scroll and a thrust plate.
  • the fixed scroll and the moving scroll are sleeved and between the fixed scroll and the moving scroll.
  • a high-pressure chamber connected to the exhaust passage is formed between the movable scrolls.
  • the movable scroll is clamped between the thrust plate and the fixed scroll.
  • the movable scroll forms a back-pressure chamber on the opposite side of the high-pressure chamber.
  • the scroll assembly is provided with a pressure relief channel, which is connected to the exhaust channel and the back pressure chamber through the static scroll and the thrust plate respectively, and the one-way valve is arranged in the pressure relief channel.
  • the one-way valve is provided in the fixed scroll.
  • a support seat is further included.
  • the support seat abuts the thrust plate and closes the scroll chamber.
  • a communication groove is formed on one side of the support seat facing the thrust plate, and the communication groove communicates with the pressure relief channel.
  • the compressor body is provided with a branch channel, which is connected to the exhaust channel and extends to the fixed scroll to be connected to the pressure relief channel.
  • the compressor body is provided with a branch channel, which is connected to the exhaust channel and extends to the fixed scroll to connect to the pressure relief channel.
  • the compressor body is provided with an exhaust valve port, and the exhaust valve port is connected to Exhaust channel.
  • the compressor body is provided with a branch channel.
  • the branch channel is connected to the exhaust channel and extends to the fixed scroll to connect to the pressure relief channel.
  • the branch channel is inclined from the fixed scroll to the exhaust valve port and is connected to the exhaust gas. aisle.
  • the compressor body is provided with a branch channel, which is connected to the exhaust channel and extends to the fixed scroll to connect to the pressure relief channel.
  • the compressor body is provided with an exhaust valve port, and the exhaust valve port is connected to The exhaust channel, the pressure relief channel is connected to the side of the exhaust channel adjacent to the exhaust valve port through a branch channel.
  • the compressor body has an eccentric exhaust passage, and the eccentric exhaust passage communicates with the scroll chamber and the exhaust passage.
  • the compressor body has an eccentric exhaust passage, the eccentric exhaust passage communicates with the scroll chamber and the exhaust passage, and a relay chamber is formed between the fixed scroll and the compressor body.
  • the relay chamber is connected to the eccentric exhaust channel and the high-pressure chamber, and the center of the relay chamber and the center of the eccentric exhaust channel are misaligned.
  • the one-way valve when the pressure in the high-pressure chamber is higher than the opening pressure of the one-way valve, the one-way valve opens to release the pressure from the high-pressure chamber toward the back-pressure chamber through the pressure relief channel. This increases the back pressure in the back pressure chamber to maintain the sealing of the scroll assembly, thereby preventing the compressor from shutting down due to excessive pressure in the high-pressure compression chamber, thereby ensuring that the compressor can operate normally for a long time.
  • Figure 1 is a three-dimensional appearance view of the present invention.
  • Figure 2 is a cross-sectional view of the present invention.
  • Fig. 3 is a cross-sectional view taken along line 3-3 in Fig. 2 .
  • Figure 4 is a cross-sectional view of the pressure relief channel of the present invention.
  • Fig. 5 is a cross-sectional view taken along line 5-5 in Fig. 4 .
  • Figure 6 is another cross-sectional view of the present invention.
  • Figure 7 is a cross-sectional view taken along line 7-7 of Figure 4.
  • the present invention provides a pressure balance structure of a carbon dioxide scroll compressor. Please refer to FIGS. 1 to 7 . It mainly includes a compressor body 10 , a scroll assembly 20 and a one-way valve 40 .
  • the compressor body 10 includes a base 11 , a barrel 12 , a cover 13 and a support base 14 .
  • the barrel 12 is disposed above the base 11
  • the cover 13 is disposed above the barrel 12 .
  • the barrel 12 has an air inlet chamber 111 and an air inlet valve port 112.
  • the air inlet valve port 112 is connected to the air inlet chamber 111.
  • the barrel 12 also has a motor chamber 121 that is closed up and down by the cover 13 and the base 11.
  • the motor chamber 121 is for a motor A and is located on one side of the air inlet chamber 111, so that the scroll assembly is driven by the motor A.
  • the liquid low-pressure refrigerant is sucked in from the intake valve port 112 and the intake chamber 111 and then compressed into high-pressure gas.
  • the support seat 14 is correspondingly disposed at the bottom of the cover 13 , and a scroll cavity 15 for the scroll assembly 20 is formed between the support seat 14 and the cover 13 .
  • the cover 13 is provided with an exhaust valve port 131 and an exhaust channel 132 with one end connected to the exhaust valve port 131.
  • the exhaust channel 132 is connected to the scroll chamber 15 and is perpendicular to the barrel 12.
  • the drive shaft A1 of the motor A passes through the support seat 14 to connect the scroll assembly 20 in the scroll chamber 15 .
  • the scroll assembly 20 is disposed in the scroll chamber 15 , and the scroll assembly 20 includes a fixed scroll 21 , a movable scroll 22 and a thrust plate 23 that are sequentially arranged away from the exhaust passage 132 .
  • the fixed scroll 21 is stuck on the cover 13 and cannot rotate.
  • the fixed scroll 21 and the movable scroll 22 respectively have a spiral structure (not numbered in the figure) as shown in Figure 2 and are nested with each other so that the movable scroll 22 can face each other.
  • the fixed scroll 21 acts spirally to achieve the effect of compressing the refrigerant.
  • the fixed scroll 21 is provided with at least one gap (not numbered in the figure) connected to the air inlet chamber 111, so that the low-pressure refrigerant in the air inlet chamber 111 can be sucked into the fixed scroll 21 and the moving scroll through the gap. Compression occurs between the scrolls 22.
  • One side of the thrust plate 23 is provided on the support seat 14, and the other side is in contact with the fixed scroll 21 and jointly clamps the movable scroll 22 with the fixed scroll 21, so that the movable scroll 22 can be clamped and held on both sides. Action between them.
  • a high-pressure chamber 24 connected to the exhaust passage 132 is formed between the fixed scroll 21 and the movable scroll 22, and the movable scroll 22 forms a back-pressure chamber between the opposite side of the high-pressure chamber 24 and the thrust plate 23.
  • Room 25 the low-pressure refrigerant sucked in by the compressor after operation will gradually be compressed into high-pressure gas in the high-pressure chamber 24 and discharged from the exhaust valve port 131 through the exhaust passage 132, while the back-pressure chamber 25 is compressing
  • a certain back pressure is provided so that the movable scroll 22 can maintain dynamic balance and be less susceptible to the influence of high-pressure gas and move away from the fixed scroll 21 .
  • the scroll assembly 20 is provided with a pressure relief passage 30.
  • the pressure relief passage 30 passes through the fixed scroll 21 and the thrust plate 23, and is connected to the exhaust passage 132 and the back pressure chamber through the fixed scroll 21 and the thrust plate 23 respectively. 25.
  • the support seat 14 abuts the thrust plate 23 and closes the scroll chamber 15 , and a communication groove 141 is formed on a side of the support seat 14 facing the thrust plate 23 .
  • the communication groove 141 is surrounded by the thrust plate 23 and communicates with the pressure relief passage 30 , that is, the communication groove 141 communicates with the back pressure chamber 25 and the exhaust passage 132 .
  • the cover 13 of the compressor body 10 is also provided with a branch channel 31 .
  • the branch channel 31 is connected to the exhaust channel 132 and extends to the fixed scroll 21 to be connected to the pressure relief channel 30 .
  • one end of the branch channel 31 connected to the exhaust channel 132 is disposed on a side of the exhaust channel 132 adjacent to the exhaust valve port 131 , and passes through a part of the cover 13 to be connected to the pressure relief channel 30 of the scroll assembly 20 , and then passes through the fixed scroll 21 and the thrust plate 23 through the pressure relief passage 30, and communicates with the drive shaft A1 of the motor A and the back pressure chamber 25 through the communication groove 141 on the support seat 14.
  • the one-way valve 40 is provided in the pressure relief passage 30 .
  • the one-way valve 40 is disposed in the portion of the pressure relief passage 30 located in the fixed scroll 21 , but the invention is not limited thereto.
  • the one-way valve 40 can also be disposed in the cover 13 of the branch passage 31 or in the thrust plate 23 of the pressure relief channel 30.
  • the one-way valve 40 opens and the exhaust channel 132 passes through the branch channel 31 and the pressure relief channel 30 It forms a connection with the communication groove 141, thereby allowing the high-pressure gas in the high-pressure chamber 24 to release pressure toward the back-pressure chamber 25 through the branch channel 31 and the pressure relief channel 30 to achieve a pressure balance effect, and at the same time avoid the failure of the compressor.
  • the protection mechanism activates and causes downtime.
  • the pressure relief of the high-pressure chamber 24 can also increase the back pressure generated by the back-pressure chamber 25, so that the movable scroll 22 can be in close contact with the fixed scroll 21 and maintain the sealing performance of the scroll assembly 20.
  • the lubricating oil carried by the high-pressure gas in the high-pressure chamber 24 and the exhaust channel 132 can also be recovered to the communication groove 141 of the support base 14 through the branch channel 31 and the pressure relief channel 30 in the form of oil-gas mixing. , thereby producing an oil return lubrication effect on the drive shaft A1 passing through the support base 14 .
  • the branch channel 31 is inclined from the fixed scroll 21 to the exhaust valve port 131 and is connected to the exhaust channel 132 . Therefore, when the high-pressure gas in the high-pressure chamber 24 and the exhaust passage 132 is decompressed toward the back-pressure chamber 25, part of the lubricating oil carried by the mixed oil and gas will also be adsorbed on the wall of the pressure relief passage 30. , and then through the branch passage 31, the lubricating oil on the tube wall falls toward the fixed scroll 21 due to gravity, and is recovered through the pressure relief passage 30 and the communication groove 141, further improving the oil return effect.
  • the cover 13 of the compressor body 10 also has an eccentric exhaust passage 133 , and the eccentric exhaust passage 133 communicates with the scroll chamber 15 and the exhaust passage 132 .
  • a relay chamber 211 is formed between the fixed scroll 21 and the cover 13, and the relay chamber 211 is connected to the aforementioned eccentric exhaust passage 133.
  • the high-pressure chamber 24, and the center of the relay chamber 211 and the center of the eccentric exhaust passage 133 are misaligned.
  • the center of the eccentric exhaust channel 133 is located between the branch channel 31 and the center of the relay chamber 211 .
  • the pressure of the high-pressure gas generated by the compression of the scroll assembly 20 can be moderately controlled through the relay chamber 32 and the eccentric exhaust passage 133, thereby preventing the high-pressure gas from being directly discharged into the exhaust passage 132, resulting in excessive pressure.
  • the compressor protection device is activated.
  • carbon dioxide scroll compressor of the present invention has a brief description of the compression operation process of carbon dioxide refrigerant as follows:
  • the movable scroll 22 starts to spiral relative to the fixed scroll 21, so that the low-pressure refrigerant entering the intake chamber 111 from the intake valve port 112 is sucked into the high-pressure chamber 24 and compressed into high-pressure gas. Then it enters the relay chamber 211 through the fixed scroll 21, is discharged into the exhaust passage 132 through the eccentric exhaust passage 133, and is finally discharged from the exhaust valve port 131 of the exhaust passage 132 to the outside of the compressor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The present invention provides a pressure balance structure of a carbon dioxide scroll compressor. The pressure balance structure comprises a compressor body, a scroll assembly, and a one-way valve, wherein the compressor body has an exhaust channel; the scroll assembly is arranged in the compressor body, and comprises a fixed scroll, an orbiting scroll and a thrust disc; the fixed scroll is sleeved with the orbiting scroll to form a high-pressure chamber which is in communication with the exhaust channel; the orbiting scroll is arranged between the thrust disc and the fixed scroll, and a back pressure chamber is formed on the side of the orbiting scroll opposite the high-pressure chamber; the scroll assembly is provided with a pressure relief channel, which is in communication with the exhaust channel and the back pressure chamber via the fixed scroll and the thrust disc; the one-way valve is arranged in the pressure relief channel; and when the pressure in the high-pressure chamber is higher than an opening pressure for the one-way valve, the one-way valve is opened and then the high-pressure chamber releases pressure to the back pressure chamber via the pressure relief channel, such that the back pressure in the back pressure chamber is increased so as to maintain the seal performance of the scroll assembly.

Description

一种二氧化碳涡旋压缩机的压力平衡结构A pressure balance structure of a carbon dioxide scroll compressor 技术领域Technical field
本发明是有关于一种压缩机，尤指一种二氧化碳涡旋压缩机的压力平衡结构。The invention relates to a compressor, in particular to a pressure balance structure of a carbon dioxide scroll compressor.
背景技术Background technique
随着节能减碳及环保意识的高涨，冷冻空调相关领域的厂商开始寻找及开发传统冷媒的有效替代方案，借以达到绿化环保的目的以吸引消费者购买，因而近年来研发出二氧化碳涡旋压缩机，其主要将二氧化碳作为制冷剂进行压缩，并且由于高效、低噪音及体积小等优势而广泛的应用在车用领域。With the rising awareness of energy conservation, carbon reduction and environmental protection, manufacturers in the field of refrigeration and air conditioning have begun to look for and develop effective alternatives to traditional refrigerants in order to achieve the purpose of greening and environmental protection and attract consumers to buy. Therefore, in recent years, they have developed carbon dioxide scroll compressors. , which mainly uses carbon dioxide as a refrigerant for compression, and is widely used in the automotive field due to its advantages of high efficiency, low noise and small size.
然而，二氧化碳涡旋式压缩机由于制冷剂为二氧化碳的缘故，因此在采用跨临界压缩循环下，倘若高压压缩腔的压力过高时，压缩机的保护机制容易频繁启动而导致停机的情形，是以如何确保高压压缩腔的压力值保持在正常范围，从而能够使压缩机长时间正常运作，乃亟待改善之缺弊。However, since the refrigerant of a carbon dioxide scroll compressor is carbon dioxide, when a transcritical compression cycle is used, if the pressure in the high-pressure compression chamber is too high, the compressor's protection mechanism is prone to frequent activation and shutdown. This is How to ensure that the pressure value of the high-pressure compression chamber is maintained within the normal range so that the compressor can operate normally for a long time is a shortcoming that needs to be improved urgently.
发明内容Contents of the invention
本发明之主要目的，在于避免高压压缩腔的压力过高而导致压缩机启动保护机制停机，从而确保压缩机能够长时间正常运作。The main purpose of the present invention is to prevent the compressor from starting up and shutting down the protection mechanism due to excessive pressure in the high-pressure compression chamber, thereby ensuring that the compressor can operate normally for a long time.
为了达成上述之目的，本发明提供一种二氧化碳涡旋压缩机的压力平衡结构，包括一压缩机本体、一涡盘组件及一单向阀，压缩机本体具有一涡盘容腔及连通涡盘容腔的一排气通道，涡盘组件设于涡盘容腔内且包括一静涡盘、一动涡盘及一止推盘，静涡盘与动涡盘相套接而在静涡盘与动涡盘之间形成有连通排气通道的一高压腔室，动涡盘被夹持在止推盘及静涡盘之间，动涡盘于高压腔室的相对侧形成有一背压腔室，涡盘组件设有一泄压通道，泄压通道经由静涡盘及止推盘而分别连通排气通道及背压腔室，单向阀设置 在泄压通道内。In order to achieve the above object, the present invention provides a pressure balance structure of a carbon dioxide scroll compressor, which includes a compressor body, a scroll assembly and a one-way valve. The compressor body has a scroll chamber and a communicating scroll. An exhaust channel of the cavity. The scroll assembly is located in the scroll cavity and includes a fixed scroll, a moving scroll and a thrust plate. The fixed scroll and the moving scroll are sleeved and between the fixed scroll and the moving scroll. A high-pressure chamber connected to the exhaust passage is formed between the movable scrolls. The movable scroll is clamped between the thrust plate and the fixed scroll. The movable scroll forms a back-pressure chamber on the opposite side of the high-pressure chamber. , The scroll assembly is provided with a pressure relief channel, which is connected to the exhaust channel and the back pressure chamber through the static scroll and the thrust plate respectively, and the one-way valve is arranged in the pressure relief channel.
在本发明的一实施例中，单向阀设于静涡盘内。In one embodiment of the invention, the one-way valve is provided in the fixed scroll.
在本发明的一实施例中，还包括一支撑座，支撑座抵接止推盘并封闭涡盘容腔，支撑座朝向止推盘的一侧面形成有一连通槽，连通槽连通泄压通道。In one embodiment of the present invention, a support seat is further included. The support seat abuts the thrust plate and closes the scroll chamber. A communication groove is formed on one side of the support seat facing the thrust plate, and the communication groove communicates with the pressure relief channel.
在本发明的一实施例中，压缩机本体设有一分歧道，分歧道连通排气通道并延伸至静涡盘而连通泄压通道。In one embodiment of the present invention, the compressor body is provided with a branch channel, which is connected to the exhaust channel and extends to the fixed scroll to be connected to the pressure relief channel.
在本发明的一实施例中，压缩机本体设有一分歧道，分歧道连通排气通道并延伸至静涡盘而连通泄压通道，压缩机本体设有一排气阀口，排气阀口连接排气通道。In one embodiment of the present invention, the compressor body is provided with a branch channel, which is connected to the exhaust channel and extends to the fixed scroll to connect to the pressure relief channel. The compressor body is provided with an exhaust valve port, and the exhaust valve port is connected to Exhaust channel.
在本发明的一实施例中，压缩机本体设有一分歧道，分歧道连通排气通道并延伸至静涡盘而连通泄压通道，分歧道自静涡盘偏向排气阀口倾斜连接排气通道。In one embodiment of the present invention, the compressor body is provided with a branch channel. The branch channel is connected to the exhaust channel and extends to the fixed scroll to connect to the pressure relief channel. The branch channel is inclined from the fixed scroll to the exhaust valve port and is connected to the exhaust gas. aisle.
在本发明的一实施例中，压缩机本体设有一分歧道，分歧道连通排气通道并延伸至静涡盘而连通泄压通道，压缩机本体设有一排气阀口，排气阀口连接排气通道，泄压通道经由分歧道连接于排气通道邻近排气阀口的一侧。In one embodiment of the present invention, the compressor body is provided with a branch channel, which is connected to the exhaust channel and extends to the fixed scroll to connect to the pressure relief channel. The compressor body is provided with an exhaust valve port, and the exhaust valve port is connected to The exhaust channel, the pressure relief channel is connected to the side of the exhaust channel adjacent to the exhaust valve port through a branch channel.
在本发明的一实施例中，压缩机本体具有一偏心排气道，偏心排气道连通涡盘容腔及排气通道。In one embodiment of the present invention, the compressor body has an eccentric exhaust passage, and the eccentric exhaust passage communicates with the scroll chamber and the exhaust passage.
在本发明的一实施例中，压缩机本体具有一偏心排气道，偏心排气道连通涡盘容腔及排气通道，静涡盘与压缩机本体之间形成有一中继腔室，中继腔室连通偏心排气道及高压腔室，且中继腔室的中心和偏心排气道的中心错位。In one embodiment of the present invention, the compressor body has an eccentric exhaust passage, the eccentric exhaust passage communicates with the scroll chamber and the exhaust passage, and a relay chamber is formed between the fixed scroll and the compressor body. The relay chamber is connected to the eccentric exhaust channel and the high-pressure chamber, and the center of the relay chamber and the center of the eccentric exhaust channel are misaligned.
本发明的二氧化碳涡旋压缩机的压力平衡结构，当高压腔室的压力高于单向阀的开启压力时，单向阀开启而使高压腔室经由泄压通道朝背压腔室泄压，从而增加背压腔室的背压力以维持涡盘组件的密封性，进而避免高压压缩腔的压力过高而导致压缩机启动保护机制停机，从而确保压缩机能够长时 间正常运作。In the pressure balance structure of the carbon dioxide scroll compressor of the present invention, when the pressure in the high-pressure chamber is higher than the opening pressure of the one-way valve, the one-way valve opens to release the pressure from the high-pressure chamber toward the back-pressure chamber through the pressure relief channel. This increases the back pressure in the back pressure chamber to maintain the sealing of the scroll assembly, thereby preventing the compressor from shutting down due to excessive pressure in the high-pressure compression chamber, thereby ensuring that the compressor can operate normally for a long time.
附图说明Description of drawings
下面将以明确易懂的方式，结合附图说明优选实施方式，对一种二氧化碳涡旋压缩机的压力平衡结构的上述特性、技术特征、优点及其实现方式予以进一步说明。Below, the preferred embodiments will be described in a clear and easy-to-understand manner with reference to the accompanying drawings, and the above-mentioned characteristics, technical features, advantages and implementation methods of a pressure balance structure of a carbon dioxide scroll compressor will be further explained.
图1是本发明的立体外观图。Figure 1 is a three-dimensional appearance view of the present invention.
图2是本发明的剖视图。Figure 2 is a cross-sectional view of the present invention.
图3是图2的3-3剖视图。Fig. 3 is a cross-sectional view taken along line 3-3 in Fig. 2 .
图4是本发明泄压通道的剖视图。Figure 4 is a cross-sectional view of the pressure relief channel of the present invention.
图5是图4的5-5剖视图。Fig. 5 is a cross-sectional view taken along line 5-5 in Fig. 4 .
图6是本发明的另一剖视图。Figure 6 is another cross-sectional view of the present invention.
图7是本图4的7-7剖视图。Figure 7 is a cross-sectional view taken along line 7-7 of Figure 4.
附图标号说明：Explanation of reference numbers:
10:压缩机本体，11:基座，111:进气腔，112:进气阀口，12:桶体，121:马达容室，13:盖体，131:排气阀口，132:排气通道，133:偏心排气道，14:支撑座，141:连通槽，15:涡盘容腔，20:涡盘组件，21:静涡盘，211:中继腔室，22:动涡盘，23:止推盘，24:高压腔室，25:背压腔室，30:泄压通道，31:分歧道，40:单向阀，A:马达，A1:驱动轴。10: Compressor body, 11: Base, 111: Intake chamber, 112: Intake valve port, 12: Barrel body, 121: Motor chamber, 13: Cover body, 131: Exhaust valve port, 132: Discharge Air passage, 133: eccentric exhaust channel, 14: support seat, 141: communication groove, 15: scroll chamber, 20: scroll assembly, 21: stationary scroll, 211: relay chamber, 22: moving scroll Disk, 23: Thrust plate, 24: High pressure chamber, 25: Back pressure chamber, 30: Pressure relief channel, 31: Branch channel, 40: One-way valve, A: Motor, A1: Drive shaft.
具体实施方式Detailed ways
以下描述中，为了说明而不是为了限定，提出了诸如特定***结构、技术之类的具体细节，以便透彻理解本申请实施例。然而，本领域的技术人员应当清楚，在没有这些具体细节的其他实施例中也可以实现本申请。在其他 情况中，省略对众所周知的***、装置、电路以及方法的详细说明，以免不必要的细节妨碍本申请的描述。In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures and technologies are provided to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
应当理解，当在本说明书和所附权利要求书中使用时，术语“包括”指示所述描述特征、整体、步骤、操作、元素和/或组件的存在，但并不排除一个或多个其他特征、整体、步骤、操作、元素、组件和/或集合的存在或添加。It will be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integers, steps, operations, elements and/or components but does not exclude one or more other The presence or addition of features, integers, steps, operations, elements, components and/or sets.
为使图面简洁，各图中只示意性地表示出了与本发明相关的部分，它们并不代表其作为产品的实际结构。另外，以使图面简洁便于理解，在有些图中具有相同结构或功能的部件，仅示意性地绘示了其中的一个，或仅标出了其中的一个。在本文中，“一个”不仅表示“仅此一个”，也可以表示“多于一个”的情形。In order to keep the drawings concise, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is schematically illustrated or labeled. In this article, "a" not only means "only one", but can also mean "more than one".
还应当进一步理解，在本申请说明书和所附权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合，并且包括这些组合。It will be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items. .
有关本发明的详细说明及技术内容，将配合图式说明如下，然而所附图式仅作为说明用途，并非用于局限本发明。The detailed description and technical content of the present invention will be described below with reference to the drawings. However, the attached drawings are only for illustrative purposes and are not intended to limit the present invention.
本发明提供一种二氧化碳涡旋压缩机的压力平衡结构，请参照图1至图7所示，其主要包括一压缩机本体10、一涡盘组件20及一单向阀40。The present invention provides a pressure balance structure of a carbon dioxide scroll compressor. Please refer to FIGS. 1 to 7 . It mainly includes a compressor body 10 , a scroll assembly 20 and a one-way valve 40 .
请参阅图1、图2及图4所示，压缩机本体10包括一基座11、一桶体12、一盖体13及一支撑座14。桶体12设置在基座11的上方，盖体13则设置在桶体12上方。桶体12具有一进气腔111并设有一进气阀口112，进气阀口112连通进气腔111。桶体12还具有被盖体13及基座11所上下封闭的一马达容室121，马达容室121供一马达A设置并位于进气腔111的一侧，从而通过马达A驱动涡盘组件20将液态的低压制冷剂自进气阀口112和进气腔111吸入后压缩为高压气体。支撑座14对应设置在盖体13的底部，并在支撑座14及盖体13之间形成有供涡盘组件20设置的一涡盘容腔15。盖体13设置有一排气阀口131及一端连接排气 阀口131的一排气通道132，排气通道132连通于涡盘容腔15并和桶体12相互垂直。马达A的驱动轴A1穿设支撑座14，从而连接涡盘容腔15内的涡盘组件20。Please refer to FIG. 1 , FIG. 2 and FIG. 4 . The compressor body 10 includes a base 11 , a barrel 12 , a cover 13 and a support base 14 . The barrel 12 is disposed above the base 11 , and the cover 13 is disposed above the barrel 12 . The barrel 12 has an air inlet chamber 111 and an air inlet valve port 112. The air inlet valve port 112 is connected to the air inlet chamber 111. The barrel 12 also has a motor chamber 121 that is closed up and down by the cover 13 and the base 11. The motor chamber 121 is for a motor A and is located on one side of the air inlet chamber 111, so that the scroll assembly is driven by the motor A. 20 The liquid low-pressure refrigerant is sucked in from the intake valve port 112 and the intake chamber 111 and then compressed into high-pressure gas. The support seat 14 is correspondingly disposed at the bottom of the cover 13 , and a scroll cavity 15 for the scroll assembly 20 is formed between the support seat 14 and the cover 13 . The cover 13 is provided with an exhaust valve port 131 and an exhaust channel 132 with one end connected to the exhaust valve port 131. The exhaust channel 132 is connected to the scroll chamber 15 and is perpendicular to the barrel 12. The drive shaft A1 of the motor A passes through the support seat 14 to connect the scroll assembly 20 in the scroll chamber 15 .
涡盘组件20设置于涡盘容腔15内，且涡盘组件20包括朝着排气通道132依序远离配置的一静涡盘21、一动涡盘22及一止推盘23。静涡盘21卡设于盖体13而无法转动，静涡盘21及动涡盘22分别具有如图2所示的一螺旋结构(图未标号)而相互套接使动涡盘22可相对于静涡盘21螺旋作动，进而达到压缩制冷剂的功效。且如图3所示，静涡盘21穿设有连通进气腔111的至少一缺口(图未标号)，从而能够自缺口将进气腔111内的低压制冷剂吸入静涡盘21及动涡盘22之间作压缩。止推盘23的一侧设于支撑座14上，另一侧抵接于静涡盘21并且和静涡盘21共同夹持动涡盘22，使动涡盘22能够被夹持地保持在两者之间作动。静涡盘21与动涡盘22之间形成有连通排气通道132的一高压腔室24，而动涡盘22在高压腔室24的相对侧和止推盘23之间形成有一背压腔室25。具体而言，压缩机在运转后所吸入的低压制冷剂会逐渐于高压腔室24压缩为高压气体，并经由排气通道132从排气阀口131排出，而背压腔室25则在压缩机运转时提供一定的背压力，使动涡盘22能保持动态平衡且不易受到高压气体的影响而远离静涡盘21。The scroll assembly 20 is disposed in the scroll chamber 15 , and the scroll assembly 20 includes a fixed scroll 21 , a movable scroll 22 and a thrust plate 23 that are sequentially arranged away from the exhaust passage 132 . The fixed scroll 21 is stuck on the cover 13 and cannot rotate. The fixed scroll 21 and the movable scroll 22 respectively have a spiral structure (not numbered in the figure) as shown in Figure 2 and are nested with each other so that the movable scroll 22 can face each other. The fixed scroll 21 acts spirally to achieve the effect of compressing the refrigerant. And as shown in Figure 3, the fixed scroll 21 is provided with at least one gap (not numbered in the figure) connected to the air inlet chamber 111, so that the low-pressure refrigerant in the air inlet chamber 111 can be sucked into the fixed scroll 21 and the moving scroll through the gap. Compression occurs between the scrolls 22. One side of the thrust plate 23 is provided on the support seat 14, and the other side is in contact with the fixed scroll 21 and jointly clamps the movable scroll 22 with the fixed scroll 21, so that the movable scroll 22 can be clamped and held on both sides. Action between them. A high-pressure chamber 24 connected to the exhaust passage 132 is formed between the fixed scroll 21 and the movable scroll 22, and the movable scroll 22 forms a back-pressure chamber between the opposite side of the high-pressure chamber 24 and the thrust plate 23. Room 25. Specifically, the low-pressure refrigerant sucked in by the compressor after operation will gradually be compressed into high-pressure gas in the high-pressure chamber 24 and discharged from the exhaust valve port 131 through the exhaust passage 132, while the back-pressure chamber 25 is compressing When the engine is running, a certain back pressure is provided so that the movable scroll 22 can maintain dynamic balance and be less susceptible to the influence of high-pressure gas and move away from the fixed scroll 21 .
涡盘组件20设有一泄压通道30，泄压通道30穿设静涡盘21及止推盘23，且经由静涡盘21及止推盘23而分别连通排气通道132及背压腔室25。支撑座14抵接止推盘23并封闭涡盘容腔15，且支撑座14朝向止推盘23的一侧面形成有一连通槽141。连通槽141和止推盘23围设而连通泄压通道30，即连通槽141连通背压腔室25及排气通道132。压缩机本体10的盖体13还设有一分歧道31，分歧道31连通排气通道132并延伸至静涡盘21而连通泄压通道30。具体而言，分歧道31连接排气通道132的一端设置在排气通道132邻近排气阀口131的一侧，并且穿设盖体13的一部分而连接于涡盘组件20的泄压通道30，再经由泄压通道30穿过静涡盘21以及止推盘23，并通过支撑座14上的连通槽141和马达A的 驱动轴A1及背压腔室25连通。单向阀40设置在泄压通道30内。于本实施例中，单向阀40设置在泄压通道30位于静涡盘21的部分内，但本发明不以此为限，例如单向阀40也可以设置在分歧道31的盖体13内或泄压通道30的止推盘23内。The scroll assembly 20 is provided with a pressure relief passage 30. The pressure relief passage 30 passes through the fixed scroll 21 and the thrust plate 23, and is connected to the exhaust passage 132 and the back pressure chamber through the fixed scroll 21 and the thrust plate 23 respectively. 25. The support seat 14 abuts the thrust plate 23 and closes the scroll chamber 15 , and a communication groove 141 is formed on a side of the support seat 14 facing the thrust plate 23 . The communication groove 141 is surrounded by the thrust plate 23 and communicates with the pressure relief passage 30 , that is, the communication groove 141 communicates with the back pressure chamber 25 and the exhaust passage 132 . The cover 13 of the compressor body 10 is also provided with a branch channel 31 . The branch channel 31 is connected to the exhaust channel 132 and extends to the fixed scroll 21 to be connected to the pressure relief channel 30 . Specifically, one end of the branch channel 31 connected to the exhaust channel 132 is disposed on a side of the exhaust channel 132 adjacent to the exhaust valve port 131 , and passes through a part of the cover 13 to be connected to the pressure relief channel 30 of the scroll assembly 20 , and then passes through the fixed scroll 21 and the thrust plate 23 through the pressure relief passage 30, and communicates with the drive shaft A1 of the motor A and the back pressure chamber 25 through the communication groove 141 on the support seat 14. The one-way valve 40 is provided in the pressure relief passage 30 . In this embodiment, the one-way valve 40 is disposed in the portion of the pressure relief passage 30 located in the fixed scroll 21 , but the invention is not limited thereto. For example, the one-way valve 40 can also be disposed in the cover 13 of the branch passage 31 or in the thrust plate 23 of the pressure relief channel 30.
借此，当高压腔室24及排气通道132的压力高于单向阀40内钢珠推动弹簧的开启压力时，单向阀40开启而使排气通道132经由分歧道31、泄压通道30和连通槽141形成导通，进而让高压腔室24内的高压气体能够经由分歧道31及泄压通道30朝背压腔室25进行泄压而起到压力平衡的效果，同时避免压缩机的保护机制启动而导致停机。另外，高压腔室24的泄压亦能够增加背压腔室25所产生的背压力，借以使动涡盘22能够贴紧静涡盘21而维持涡盘组件20的密封性。再者，高压腔室24及排气通道132内的高压气体所挟带的润滑油，亦能够以油气混合的方式经由分歧道31及泄压通道30而回收至支撑座14的连通槽141上，进而对穿设支撑座14的驱动轴A1产生回油润滑的功效。Thereby, when the pressure of the high-pressure chamber 24 and the exhaust channel 132 is higher than the opening pressure of the steel ball pushing spring in the one-way valve 40 , the one-way valve 40 opens and the exhaust channel 132 passes through the branch channel 31 and the pressure relief channel 30 It forms a connection with the communication groove 141, thereby allowing the high-pressure gas in the high-pressure chamber 24 to release pressure toward the back-pressure chamber 25 through the branch channel 31 and the pressure relief channel 30 to achieve a pressure balance effect, and at the same time avoid the failure of the compressor. The protection mechanism activates and causes downtime. In addition, the pressure relief of the high-pressure chamber 24 can also increase the back pressure generated by the back-pressure chamber 25, so that the movable scroll 22 can be in close contact with the fixed scroll 21 and maintain the sealing performance of the scroll assembly 20. Furthermore, the lubricating oil carried by the high-pressure gas in the high-pressure chamber 24 and the exhaust channel 132 can also be recovered to the communication groove 141 of the support base 14 through the branch channel 31 and the pressure relief channel 30 in the form of oil-gas mixing. , thereby producing an oil return lubrication effect on the drive shaft A1 passing through the support base 14 .
进一步说明，请参阅图4所示，分歧道31自静涡盘21偏向排气阀口131倾斜连接排气通道132。借此，高压腔室24及排气通道132内的高压气体在朝背压腔室25进行泄压时，混合油气所挟带的润滑油亦有部分会吸附在泄压通道30的管壁上，进而通过分歧道31而使管壁上的润滑油因重力朝向静涡盘21掉落，从而通过泄压通道30及连通槽141回收，进一步提升回油的效果。For further explanation, please refer to FIG. 4 . As shown in FIG. 4 , the branch channel 31 is inclined from the fixed scroll 21 to the exhaust valve port 131 and is connected to the exhaust channel 132 . Therefore, when the high-pressure gas in the high-pressure chamber 24 and the exhaust passage 132 is decompressed toward the back-pressure chamber 25, part of the lubricating oil carried by the mixed oil and gas will also be adsorbed on the wall of the pressure relief passage 30. , and then through the branch passage 31, the lubricating oil on the tube wall falls toward the fixed scroll 21 due to gravity, and is recovered through the pressure relief passage 30 and the communication groove 141, further improving the oil return effect.
又，复参阅图2及图4～图6所示，压缩机本体10的盖体13还具有一偏心排气道133，且偏心排气道133连通涡盘容腔15及排气通道132。而当静涡盘21卡设于压缩机本体10的盖体13时，静涡盘21与盖体13之间形成有一中继腔室211，中继腔室211连通前述之偏心排气道133及高压腔室24，且中继腔室211的中心和偏心排气道133的中心错位。具体而言，偏心排气道133的中心位于分歧道31及中继腔室211的中心之间。借此，通过涡盘组件20所压缩产生的高压气体，能够经由中继腔室32及偏心排气道133适度地控制压力，从而避免高压气体直接排放至排气通道132内，导致压力过大而使压缩机的保护装置启动。Referring again to FIG. 2 and FIGS. 4 to 6 , the cover 13 of the compressor body 10 also has an eccentric exhaust passage 133 , and the eccentric exhaust passage 133 communicates with the scroll chamber 15 and the exhaust passage 132 . When the fixed scroll 21 is clamped on the cover 13 of the compressor body 10, a relay chamber 211 is formed between the fixed scroll 21 and the cover 13, and the relay chamber 211 is connected to the aforementioned eccentric exhaust passage 133. and the high-pressure chamber 24, and the center of the relay chamber 211 and the center of the eccentric exhaust passage 133 are misaligned. Specifically, the center of the eccentric exhaust channel 133 is located between the branch channel 31 and the center of the relay chamber 211 . Thereby, the pressure of the high-pressure gas generated by the compression of the scroll assembly 20 can be moderately controlled through the relay chamber 32 and the eccentric exhaust passage 133, thereby preventing the high-pressure gas from being directly discharged into the exhaust passage 132, resulting in excessive pressure. The compressor protection device is activated.
进一步说明，本发明之二氧化碳涡旋压缩机，其二氧化碳制冷剂的压缩作动流程简述如下：To further explain, the carbon dioxide scroll compressor of the present invention has a brief description of the compression operation process of carbon dioxide refrigerant as follows:
压缩机启动运行时，动涡盘22相对于静涡盘21开始螺旋作动，使自进气阀口112进入进气腔111内的低压制冷剂被吸至高压腔室24内压缩为高压气体，再通过静涡盘21而进入中继腔室211，并通过偏心排气道133排放至排气通道132内，最后从排气通道132的排气阀口131排出至压缩机外部。When the compressor starts running, the movable scroll 22 starts to spiral relative to the fixed scroll 21, so that the low-pressure refrigerant entering the intake chamber 111 from the intake valve port 112 is sucked into the high-pressure chamber 24 and compressed into high-pressure gas. Then it enters the relay chamber 211 through the fixed scroll 21, is discharged into the exhaust passage 132 through the eccentric exhaust passage 133, and is finally discharged from the exhaust valve port 131 of the exhaust passage 132 to the outside of the compressor.
而当排气通道132内的高压气体的压力高于泄压通道30内的单向阀40的开启压力时，单向阀40内的钢珠被推开而使排气通道132经由分歧道31及泄压通道30和连通槽141形成导通，进而让排气通道132内的高压气体能够经由分歧道31及泄压通道30朝背压腔室25进行泄压而起到压力平衡的效果，同时避免压缩机的保护机制启动而导致停机；而当排气通道132内的高压气体的压力逐渐降低至低于单向阀40之弹簧所施加于钢珠的弹力时，单向阀40重新封闭而使泄压通道30不导通，此时排气通道132内的高压气体便仅能够由排气阀口131排出。When the pressure of the high-pressure gas in the exhaust channel 132 is higher than the opening pressure of the one-way valve 40 in the pressure relief channel 30, the steel ball in the one-way valve 40 is pushed open so that the exhaust channel 132 passes through the branch channel 31 and The pressure relief channel 30 and the communication groove 141 are connected, thereby allowing the high-pressure gas in the exhaust channel 132 to release pressure toward the back pressure chamber 25 through the branch channel 31 and the pressure relief channel 30 to achieve a pressure balance effect. This prevents the compressor from being shut down due to activation of the protection mechanism; and when the pressure of the high-pressure gas in the exhaust passage 132 gradually drops below the elastic force exerted by the spring of the one-way valve 40 on the steel ball, the one-way valve 40 is re-closed to cause the compressor to shut down. When the pressure relief passage 30 is not conductive, the high-pressure gas in the exhaust passage 132 can only be discharged through the exhaust valve port 131 .
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。当然，本发明还可有其他多种实施例，在不背离本发明精神及其实质的情況下，熟悉本领域的技术人员当可根据本发明演化出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明所申请专利的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the present principles, and these improvements and modifications should also be made. regarded as the protection scope of the present invention. Of course, the present invention can also have various other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can evolve various corresponding changes and deformations according to the present invention. However, these corresponding All changes and deformations shall fall within the protection scope of the patent applied for by the present invention.

Claims (9)

  1. 一种二氧化碳涡旋压缩机的压力平衡结构，其特征是，包括：A pressure balance structure of a carbon dioxide scroll compressor, which is characterized by including:
    一压缩机本体(10)，具有一涡盘容腔(15)及连通该涡盘容腔(15)的一排气通道(132)；A compressor body (10) has a scroll chamber (15) and an exhaust passage (132) connected to the scroll chamber (15);
    一涡盘组件(20)，设于该涡盘容腔(15)内，该涡盘组件(20)包括一静涡盘(21)、一动涡盘(22)及一止推盘(23)，该静涡盘(21)与该动涡盘(22)相套接而在该静涡盘(21)与该动涡盘(22)之间形成有连通该排气通道(132)的一高压腔室(24)，该动涡盘(22)被夹持在该止推盘(23)及该静涡盘(21)之间，该动涡盘(22)于该高压腔室(24)的相对侧形成有一背压腔室(25)，该涡盘组件(20)设有一泄压通道(30)，该泄压通道(30)经由该静涡盘(21)及A scroll assembly (20) is located in the scroll cavity (15). The scroll assembly (20) includes a fixed scroll (21), a movable scroll (22) and a thrust plate (23). , the fixed scroll (21) and the movable scroll (22) are sleeved, and a connection with the exhaust passage (132) is formed between the fixed scroll (21) and the movable scroll (22). The high-pressure chamber (24), the movable scroll (22) is clamped between the thrust plate (23) and the fixed scroll (21), the movable scroll (22) is in the high-pressure chamber (24) ) is formed on the opposite side of the back pressure chamber (25), the scroll assembly (20) is provided with a pressure relief passage (30), and the pressure relief passage (30) passes through the fixed scroll (21) and
    该止推盘(23)而分别连通该排气通道(132)及该背压腔室(25)；及The thrust plate (23) communicates with the exhaust channel (132) and the back pressure chamber (25) respectively; and
    一单向阀(40)，设置在该泄压通道(30)内；A one-way valve (40) is provided in the pressure relief channel (30);
    其中当该高压腔室(24)的压力高于该单向阀(40)的开启压力时，该单向阀(40)开启而使该高压腔室(24)经由该泄压通道(30)朝该背压腔室(25)泄压。When the pressure of the high-pressure chamber (24) is higher than the opening pressure of the one-way valve (40), the one-way valve (40) opens to allow the high-pressure chamber (24) to pass through the pressure relief channel (30) Pressure is relieved towards the back pressure chamber (25).
  2. 如权利要求1所述的二氧化碳涡旋压缩机的压力平衡结构，其特征是，其中该单向阀(40)设于该静涡盘(21)内。The pressure balance structure of a carbon dioxide scroll compressor according to claim 1, wherein the one-way valve (40) is provided in the fixed scroll (21).
  3. 如权利要求1所述的二氧化碳涡旋压缩机的压力平衡结构，其特征是，其还包括一支撑座(14)，该支撑座(14)抵接该止推盘(23)并封闭该涡盘容腔(15)，该支撑座(14)朝向该止推盘(23)的一侧面形成有一连通槽(141)，该连通槽(141)连通该泄压通道(30)。The pressure balance structure of a carbon dioxide scroll compressor according to claim 1, characterized in that it further includes a support seat (14), the support seat (14) abuts the thrust plate (23) and seals the scroll. In the disk cavity (15), a communication groove (141) is formed on a side of the support seat (14) facing the thrust plate (23), and the communication groove (141) communicates with the pressure relief channel (30).
  4. 如权利要求1所述的二氧化碳涡旋压缩机的压力平衡结构，其特征是，其中该压缩机本体(10)设有一分歧道(31)，该分歧道(31)连通该排气通道(132)并延伸至该静涡盘(21)而连通该泄压通道(30)。The pressure balance structure of a carbon dioxide scroll compressor according to claim 1, wherein the compressor body (10) is provided with a branch channel (31), and the branch channel (31) is connected to the exhaust passage (132). ) and extends to the fixed scroll (21) to communicate with the pressure relief passage (30).
  5. 如权利要求4所述的二氧化碳涡旋压缩机的压力平衡结构，其特征是，其中该压缩机本体(10)设有一排气阀口(131)，该排气阀口(131)连接该排气 通道(132)。The pressure balance structure of a carbon dioxide scroll compressor according to claim 4, wherein the compressor body (10) is provided with an exhaust valve port (131), and the exhaust valve port (131) is connected to the exhaust valve. Air channel (132).
  6. 如权利要求5所述的二氧化碳涡旋压缩机的压力平衡结构，其特征是，其中该分歧道(31)自该静涡盘(21)偏向该排气阀口(131)倾斜连接该排气通道(132)。The pressure balance structure of a carbon dioxide scroll compressor according to claim 5, wherein the branch channel (31) is inclined from the fixed scroll (21) to the exhaust valve port (131) and is connected to the exhaust gas. channel(132).
  7. 如权利要求6所述的二氧化碳涡旋压缩机的压力平衡结构，其特征是，其中该泄压通道(30)经由该分歧道(31)连接于该排气通道(132)邻近该排气阀口(131)的一侧。The pressure balance structure of a carbon dioxide scroll compressor as claimed in claim 6, wherein the pressure relief passage (30) is connected to the exhaust passage (132) adjacent to the exhaust valve via the branch passage (31). One side of the mouth (131).
  8. 如权利要求1所述的二氧化碳涡旋压缩机的压力平衡结构，其特征是，其中该压缩机本体(10)具有一偏心排气道(133)，该偏心排气道(133)连通该涡盘容腔(15)及该排气通道(132)。The pressure balance structure of a carbon dioxide scroll compressor according to claim 1, wherein the compressor body (10) has an eccentric exhaust passage (133), and the eccentric exhaust passage (133) communicates with the scroll. The disc chamber (15) and the exhaust channel (132).
  9. 如权利要求8所述的二氧化碳涡旋压缩机的压力平衡结构，其特征是，其中该静涡盘(21)与该压缩机本体(10)之间形成有一中继腔室(211)，该中继腔室(211)连通该偏心排气道(133)及该高压腔室(24)，且该中继腔室(211)的中心和该偏心排气道(133)的中心错位。The pressure balance structure of a carbon dioxide scroll compressor according to claim 8, wherein a relay chamber (211) is formed between the fixed scroll (21) and the compressor body (10), and the The relay chamber (211) communicates with the eccentric exhaust channel (133) and the high-pressure chamber (24), and the center of the relay chamber (211) and the center of the eccentric exhaust channel (133) are misaligned.
PCT/CN2022/120208 2022-08-12 2022-09-21 Pressure balance structure of carbon dioxide scroll compressor WO2024031787A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210969478.X 2022-08-12
CN202210969478.XA CN115306711A (en) 2022-08-12 2022-08-12 Pressure balance structure of carbon dioxide scroll compressor

Publications (1)

Publication Number Publication Date
WO2024031787A1 true WO2024031787A1 (en) 2024-02-15

Family

ID=83863100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/120208 WO2024031787A1 (en) 2022-08-12 2022-09-21 Pressure balance structure of carbon dioxide scroll compressor

Country Status (2)

Country Link
CN (1) CN115306711A (en)
WO (1) WO2024031787A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024103379A1 (en) * 2022-11-18 2024-05-23 深圳昂湃技术有限公司 Temperature sensing and pressure regulating structure of carbon dioxide scroll compressor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0942175A (en) * 1995-07-28 1997-02-10 Mitsubishi Heavy Ind Ltd Scroll compressor
US20070140872A1 (en) * 2005-12-16 2007-06-21 Hutt Richard S Compressor assembly for air conditioner system
CN110159536A (en) * 2019-06-10 2019-08-23 珠海格力节能环保制冷技术研究中心有限公司 Screw compressor, air conditioner and vehicle
KR20200085123A (en) * 2019-01-04 2020-07-14 현대모비스 주식회사 Motor driven compressor apparatus
CN211144798U (en) * 2019-10-24 2020-07-31 艾默生环境优化技术(苏州)有限公司 Scroll compressor having a plurality of scroll members
CN213205965U (en) * 2020-06-10 2021-05-14 安徽省大富智能空调技术有限公司 Scroll compressor, refrigeration equipment and automobile
CN215805191U (en) * 2021-08-23 2022-02-11 珠海格力节能环保制冷技术研究中心有限公司 Compressor end cover assembly, compressor and air conditioning system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0942175A (en) * 1995-07-28 1997-02-10 Mitsubishi Heavy Ind Ltd Scroll compressor
US20070140872A1 (en) * 2005-12-16 2007-06-21 Hutt Richard S Compressor assembly for air conditioner system
KR20200085123A (en) * 2019-01-04 2020-07-14 현대모비스 주식회사 Motor driven compressor apparatus
CN110159536A (en) * 2019-06-10 2019-08-23 珠海格力节能环保制冷技术研究中心有限公司 Screw compressor, air conditioner and vehicle
CN211144798U (en) * 2019-10-24 2020-07-31 艾默生环境优化技术(苏州)有限公司 Scroll compressor having a plurality of scroll members
CN213205965U (en) * 2020-06-10 2021-05-14 安徽省大富智能空调技术有限公司 Scroll compressor, refrigeration equipment and automobile
CN215805191U (en) * 2021-08-23 2022-02-11 珠海格力节能环保制冷技术研究中心有限公司 Compressor end cover assembly, compressor and air conditioning system

Also Published As

Publication number Publication date
CN115306711A (en) 2022-11-08

Similar Documents

Publication Publication Date Title
CN100570238C (en) Refrigerating air-conditioning
US6913448B2 (en) Load-regulating device for scroll type compressors
AU650377B2 (en) Pressure ratio responsive unoader
US4545747A (en) Scroll-type compressor
US7381037B2 (en) Apparatus for varying capacity of scroll compressor
CN107620705B (en) Scroll compressor and air conditioning system
US6769881B2 (en) Vacuum preventing device for scroll compressor
WO2024031787A1 (en) Pressure balance structure of carbon dioxide scroll compressor
CN200985871Y (en) Sealed-type compressor
US20220099092A1 (en) Motor driven compressor apparatus including swing pin
KR20090084298A (en) Apparatus for changing mode in scroll compressor
KR20190025250A (en) Scroll compressor
KR100920980B1 (en) Capacity varying device for scroll compressor
JP2005264827A (en) Scroll compressor
US5341658A (en) Fail safe mechanical oil shutoff arrangement for screw compressor
JPWO2005010372A1 (en) Scroll compressor
JPH1077977A (en) Scroll type compressor
WO2020125064A1 (en) Scroll compressor, air conditioner, and backpressure adjustment method for scroll compressor
JPH0584394B2 (en)
JP2002317784A (en) Rotary two-stage compressor
KR102138568B1 (en) Compressor
WO2024103379A1 (en) Temperature sensing and pressure regulating structure of carbon dioxide scroll compressor
WO2020008849A1 (en) Scroll compressor
KR101238208B1 (en) Apparatus for preventing vacumm of scroll compressor
JP2008215115A (en) Scroll compressor

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22954733

Country of ref document: EP

Kind code of ref document: A1