阅读说明：本技术 补气通道、压缩机及空调器 (Air supply channel, compressor and air conditioner ) 是由 朱东阳 李永贵 陈强 韩鑫 于 2020-11-18 设计创作，主要内容包括：本公开提供一种补气通道、压缩机及空调器,补气通道用于转子式压缩机的补气增焓,包括：依次连通的第一通道、第三通道,第一通道与压缩机补气管连通,第三通道与压缩腔连通,压缩腔通过第一通道、第三通道与补气管相连通；第一通道设置在法兰件或隔板件上,第三通道设置在滚子上。本公开的补气通道,用于转子式压缩机的补气增焓,适用于单缸或双缸压缩机,通过在隔板或法兰件上的第一通道,及滚子上的第三通道,补气经第一、三通道通入压缩腔,出口设置在最优位置,使得补气起始位置设置于滚子与气缸内壁面靠近高压腔一端,结束位置在滚子旋转至压缩腔压力达到补气压力位置,因此不会出现补气及吸气回流问题,补气效果好。(The utility model provides an tonifying qi passageway, compressor and air conditioner, tonifying qi passageway are used for rotor compressor's tonifying qi to increase enthalpy, include: the compressor air supplementing pipe is communicated with the first channel and the third channel in sequence, the first channel is communicated with the compressor air supplementing pipe, the third channel is communicated with the compression cavity, and the compression cavity is communicated with the air supplementing pipe through the first channel and the third channel; the first channel is provided on the flange member or the partition member and the third channel is provided on the roller. The air supply channel is used for supplying air and increasing enthalpy of a rotor compressor, is suitable for a single-cylinder or double-cylinder compressor, and is characterized in that air is supplied to a compression cavity through a first channel on a partition plate or a flange part and a third channel on a roller, an outlet is arranged at an optimal position, so that an air supply starting position is arranged at one end, close to the high-pressure cavity, of the inner wall surface of the roller and the inner wall surface of an air cylinder, and an end position is arranged at a position where the roller rotates to reach the pressure of the compression cavity to supply air pressure, so that the problems of air supply and air suction backflow cannot.)

1. An air supply channel for increasing enthalpy of air supply of a rotor compressor, comprising:

the compressor air supplementing pipe comprises a first channel (4) and a third channel (6) which are sequentially communicated, wherein the first channel (4) is communicated with a compressor air supplementing pipe (8), the third channel (6) is communicated with a compression cavity, and the compression cavity is communicated with the air supplementing pipe (8) through the first channel (4) and the third channel (6);

the first channel (4) is arranged on the flange part (1) or the partition part, and the third channel (6) is arranged on the roller (2).

2. The air supplement channel according to claim 1, characterized in that it further comprises a second channel (5), said second channel (5) being arranged on the crankshaft (3), said second channel (5) communicating between said first channel (4) and said third channel (6), said compression chamber communicating with an air supplement pipe (8) through said first channel (4), second channel (5), third channel (6).

3. The air compensation channel according to claim 2, characterized in that the first channel (4) comprises a first radial channel (4.1) and a first axial channel (4.2) which are communicated, the first radial channel (4.1) is arranged along the radial direction of the flange piece (1) or the partition piece, and the first axial channel (4.2) is communicated to the inner cavity of the cylinder (7) along the axial direction of the flange piece (1) or the partition piece.

4. The air supply channel according to claim 3, characterized in that, starting from the midline of the slide (9) in the cylinder (7), air supply is started when the contact line between the roller (2) and the cylinder (7) rotates within the cylinder (7) by an angle α, the first channel (4), the second channel (5), and the third channel (6) are in communication with the compression chamber, and when the contact line between the roller (2) and the cylinder (7) rotates within the cylinder (7) by an angle β, air supply is ended, and the first channel (4), the second channel (5), and the third channel (6) are disconnected from the compression chamber.

5. The air compensation channel as claimed in claim 4, wherein α -15 ° -40 ° and β -150 ° -180 ° are satisfied.

6. The air compensation channel according to claim 3, characterized in that the first radial channel (4.1) corresponds in position to an air compensation opening (11) in the compressor housing (10), the air compensation tube (8) communicating with the first radial channel (4.1) through the air compensation opening (11) by means of a distally mounted injection needle assembly (12).

7. The air compensation channel according to claim 2, characterized in that the first channel (4) comprises a first circumferential channel (4.3), the first circumferential channel (4.3) being a groove opening on an axial end face of the flange member (1) or the partition member facing the cylinder (7), the first circumferential channel (4.3) being configured to be normally open to the first channel (4).

8. The gas compensation channel according to claim 7, characterized in that the second channel (5) comprises a first radial channel (5.1), the first radial channel (5.1) being a groove opening on an axial end face of the eccentric portion (13) close to the first channel (4) in the radial direction of the eccentric portion (13);

the third channel (6) comprises a second radial channel (6.1), and the second radial channel (6.1) is a groove which is formed on the axial end face of the roller (2) close to the first channel (4) along the radial direction of the roller (2);

the first radial channel (5.1) is connected with the second radial channel (6.1) to form a second radial channel, the second radial channel is configured to be communicated with the first annular channel (4.3) at the beginning of air supply and disconnected from the first annular channel (4.3) at the end of air supply, and the second radial channel is also configured to be normally communicated with a compression cavity.

9. The gas compensation channel according to claim 7, characterized in that the second channel (5) comprises a second axial channel (5.3), a second radial channel one (5.1), the second axial channel (5.3) being a hole made in the eccentric portion (13) in the axial direction of the eccentric portion (13), the second radial channel one (5.1) being a hole made in the eccentric portion (13) in the radial direction of the eccentric portion (13);

the third channel (6) comprises a second radial channel II (6.1), and the second radial channel II (6.1) is a hole formed in the roller (2) along the radial direction of the roller (2);

the first radial channel (5.1) is connected with the second radial channel (6.1) to form a second radial channel, the second axial channel (5.3) is configured to be communicated with the first annular channel (4.3) at the beginning of air supply and disconnected from the first annular channel (4.3) at the end of air supply, the second axial channel (5.3) is also configured to be normally communicated with the second radial channel, and the second radial channel is communicated with a compression cavity.

10. The gas compensation channel according to claim 2, characterized in that the second channel (5) comprises a first second annular channel (5.2), the first second annular channel (5.2) being a groove opening on an axial end face of the eccentric (13) close to the first channel (4), the third channel (6) comprising a second annular channel (6.2), the second annular channel (6.2) being a groove opening on an axial end face of the roller (2) close to the first channel (4);

the first second annular channel (5.2) is connected with the second annular channel (6.2) to form a second annular channel, the second annular channel is configured to be communicated with the first channel (4) when air supply starts, and is disconnected from the first channel (4) when air supply ends.

11. The gas compensation channel according to claim 10, characterized in that the second channel (5) further comprises a first radial channel (5.1), the first radial channel (5.1) being a groove provided on an axial end face of the eccentric portion (13) close to the first channel (4) in the radial direction of the eccentric portion (13);

the third channel (6) further comprises a second radial channel II (6.1), and the second radial channel II (6.1) is a groove which is formed on the axial end face of the roller (2) close to the first channel (4) along the radial direction of the roller (2);

the first second radial channel (5.1) is connected with the second radial channel (6.1) to form a second radial channel, the second annular channel is communicated with the second radial channel, and the second radial channel is communicated with the compression cavity.

12. The gas compensation channel according to claim 10, characterized in that the second channel (5) comprises a first radial channel (5.1), a second axial channel (5.3), the second axial channel (5.3) being a hole made in the eccentric portion (13) in the axial direction of the eccentric portion (13), the first radial channel (5.1) being a hole made in the eccentric portion (13) in the radial direction of the eccentric portion (13);

the third channel (6) comprises a second radial channel II (6.1), and the second radial channel II (6.1) is a hole formed in the roller (2) along the radial direction of the roller (2);

the first second radial channel (5.1) is connected with the second radial channel (6.1) to form a second radial channel, the second annular channel, the second axial channel (5.3) and the second radial channel are communicated in sequence, and the second radial channel is communicated with the compression cavity.

13. The air compensation channel according to claim 12, characterized in that a cylindrical counter bore is provided at the connection of the second circumferential channel and the second axial channel (5.3).

14. The gas supplementing channel according to any one of claims 7-13, wherein the diameters of the first circumferential channel (4.3), the second circumferential channel and the second radial channel are all D1, and the diameter of the first axial channel (4.2) is D0, which satisfies D0-D1.

15. The air supplement channel according to claim 14, wherein D0-D1-3 mm is 1mm ≤.

16. The gas supplementing channel according to any one of claims 7 to 13, wherein when the gas supplementing channel comprises a first annular channel (4.3), the circle center of the first annular channel (4.3) is coincident with the circle center of the flange piece (1) or the partition piece, the outer diameter of the first annular channel (4.3) is D2, the outer diameter of the roller (2) is D3, the eccentricity of the crankshaft (3) is e, the minimum sealing distance between the first annular channel (4.3) and the outer wall of the roller (2) is f, and D2 is equal to or less than D3/2-e-f is satisfied;

when the air supplementing channel comprises a second annular channel, the circle center of the second annular channel coincides with the circle center of the flange piece (1) or the flange piece (1), the outer diameter of the second annular channel is D2, the outer diameter of the roller (2) is D3, the eccentric amount of the crankshaft (3) is e, the minimum sealing distance between the second annular channel and the outer wall of the roller (2) is f, and D3/2-e-f is satisfied, wherein D2 is not more than D3/2-e-f.

17. The air supply channel according to claim 4, characterized in that the outlet of the third channel (6) on the outer wall of the roller (2) is positioned on the side of the contact line of the cylinder (7) and the roller (2) close to the compression chamber, and the chord length of the third channel (6) and the contact line in axial projection is L1, which satisfies 2mm L1 mm 4 mm.

18. The air compensation channel according to any one of claims 2 to 17, characterized in that the crankshaft (3) and the roller (2) are fixed by a pin (14), the crankshaft (3) and the roller (2) being non-rotatable with respect to each other.

19. The air compensation channel according to claim 18, characterized in that the distance between the pin (14) and the outer wall of the roller (2) is L2, satisfying L2 ≥ 1.5 mm.

20. A compressor, characterized in that a gas compensation channel according to any one of claims 1-19 is used.

21. An air conditioner characterized in that the air supplement passage according to any one of claims 1 to 19 is used.

Technical Field

The disclosure belongs to the technical field of compressors, and particularly relates to an air supplementing channel, a compressor and an air conditioner.

Background

In the prior art, when the conventional compressor is used in high-temperature refrigeration and low-temperature heating environments, such as heating in the middle east or cooling in the north, the problems of poor environment and poor refrigeration and heating effects are solved by a gas-supplementing and enthalpy-increasing structure. Under high-temperature refrigeration, air is supplemented through the middle of the system, and the gas proportion of a refrigerant entering an evaporator is reduced, so that the enthalpy value of the refrigerant entering the evaporator is reduced, and the cold quantity of an air conditioner is increased; under low-temperature heating, the density of the air suction refrigerant is low, and the quantity of the refrigerant entering the compressor is increased through intermediate air supplement to increase the heating capacity.

The conventional air supply compressor is used for punching a partition plate or a flange, air is directly supplied to enter a high-pressure cavity of an air cylinder through a straight channel, and due to the fact that the punching position is limited by screw holes and exhaust channel holes in parts such as the partition plate or the flange, the air supply channel is unreasonable in design, air supply backflow and air suction backflow phenomena can occur, and the problem of poor air supply effect is caused.

Disclosure of Invention

Therefore, the technical problem to be solved by the present disclosure is that the compressor air supply channel in the related art is unreasonable in design, which results in air supply backflow and air suction backflow phenomena, and the air supply effect is poor, thereby providing an air supply channel, a compressor and an air conditioner.

In order to solve the above problem, the present disclosure provides an air-supply channel for increasing enthalpy of air supply of a rotary compressor, including:

the compressor air supplementing pipe is communicated with the first channel and the third channel in sequence, the first channel is communicated with the compressor air supplementing pipe, the third channel is communicated with the compression cavity, and the compression cavity is communicated with the air supplementing pipe through the first channel and the third channel;

the first channel is provided on the flange member or the partition member and the third channel is provided on the roller.

In some embodiments, the air supply passage further comprises a second passage, the second passage is arranged on the crankshaft and communicated between the first passage and the third passage, and the compression cavity is communicated with the air supply pipe through the first passage, the second passage and the third passage.

In some embodiments, the first passage includes a first radial passage and a first axial passage which are communicated with each other, the first radial passage is arranged along the radial direction of the flange member or the partition member, and the first axial passage is communicated to the inner cavity of the cylinder along the axial direction of the flange member or the partition member.

In some embodiments, starting from a center line of a slide in a cylinder, when a contact line between a roller and the cylinder rotates in the cylinder at an angle α, air supply is started, and a first channel, a second channel, and a third channel are communicated with a compression cavity.

In some embodiments, α is 15 ° -40 °, β is 150 ° -180 °.

In some embodiments, an acute angle included by a projection of an axis of the first radial passage and a midline of the slide in the cylinder in a vertical plane is β, and β is 150 ° -180 °.

In some embodiments, the first radial passage corresponds in position to an air supplement port in the compressor housing, and the air supplement tube communicates with the first radial passage through the air supplement port by a distally mounted injection needle assembly.

In some embodiments, the first passage comprises a first circumferential passage which is a groove opened on an axial end face of the flange member or the partition member facing the cylinder, the first circumferential passage being configured to be normally open to the first passage.

In some embodiments, the second channel comprises a first second radial channel, and the first second radial channel is a groove which is arranged on the axial end face of the eccentric part close to the first channel along the radial direction of the eccentric part;

the third channel comprises a second radial channel II which is a groove arranged on the axial end surface of the roller close to the first channel along the radial direction of the roller;

the first radial channel is connected with the second radial channel to form a second radial channel, the second radial channel is configured to be communicated with the first annular channel when air supply is started and disconnected from the first annular channel when air supply is finished, and the second radial channel is also configured to be normally communicated with the compression cavity.

In some embodiments, the second channel includes a second axial channel that is a hole opened in the eccentric portion in the axial direction of the eccentric portion, and a second radial channel one that is a hole opened in the eccentric portion in the radial direction of the eccentric portion;

the third channel comprises a second radial channel II which is a hole formed in the roller along the radial direction of the roller;

the first radial channel is connected with the second radial channel to form a second radial channel, the second axial channel is configured to be communicated with the first annular channel when air supplement is started and disconnected from the first annular channel when air supplement is finished, the second axial channel is also configured to be normally communicated with the second radial channel, and the second radial channel is communicated with the compression cavity.

In some embodiments, the second channel comprises a first second circumferential channel, the first second circumferential channel being a groove formed in an axial end face of the eccentric portion adjacent to the first channel, and the third channel comprises a second circumferential channel, the second circumferential channel being a groove formed in an axial end face of the roller adjacent to the first channel;

the first second annular channel is connected with the second annular channel to form a second annular channel, the second annular channel is configured to be communicated with the first channel when air supply starts, and is disconnected with the first channel when air supply ends.

In some embodiments, the second channel further comprises a first second radial channel, and the first second radial channel is a groove formed on the axial end face of the eccentric part close to the first channel along the radial direction of the eccentric part;

the third channel also comprises a second radial channel II which is a groove arranged on the axial end surface of the roller close to the first channel along the radial direction of the roller;

the first radial channel is connected with the second radial channel to form a second radial channel, the second annular channel is communicated with the second radial channel, and the second radial channel is communicated with the compression cavity.

In some embodiments, the second channel includes a first radial channel and a second axial channel, the second axial channel is a hole formed in the eccentric part along the axial direction of the eccentric part, and the first radial channel is a hole formed in the eccentric part along the radial direction of the eccentric part;

the third channel comprises a second radial channel II which is a hole formed in the roller along the radial direction of the roller;

the first second radial channel is connected with the second radial channel to form a second radial channel, the second annular channel, the second axial channel and the second radial channel are communicated in sequence, and the second radial channel is communicated with the compression cavity.

In some embodiments, a cylindrical counterbore is arranged at the position where the second annular channel is communicated with the second axial channel.

In some embodiments, the diameters of the first circumferential channel, the second circumferential channel and the second radial channel are all D1, the diameter of the first axial channel is D0, and D0-D1 is satisfied.

In some embodiments, 1mm ≦ D0 ≦ D1 ≦ 3 mm.

In some embodiments, when the air supply channel comprises a first annular channel, the center of the first annular channel coincides with the center of the flange piece or the flange piece, the outer diameter of the first annular channel is D2, the outer diameter of the roller is D3, the eccentricity of the crankshaft is e, the minimum sealing distance between the first annular channel and the outer wall of the roller is f, and D2 is equal to or greater than D3/2-e-f;

when the air supplementing channel comprises a second annular channel, the circle center of the second annular channel is overlapped with the circle center of the flange piece or the partition plate piece, the outer diameter of the second annular channel is D2, the outer diameter of the roller is D3, the eccentric amount of the crankshaft is e, the minimum sealing distance between the second annular channel and the outer wall of the roller is f, and D3/2-e-f is larger than or equal to D2.

In some embodiments, the outlet of the third channel on the outer wall of the roller is positioned on one side of the contact line of the cylinder and the roller, which is close to the compression cavity, and the chord length of the third channel and the contact line in axial projection is L1, which satisfies 2mm < L1 < 4 mm.

In some embodiments, the crankshaft and the roller are fixed by pins, and the crankshaft and the roller cannot rotate relatively.

In some embodiments, the distance between the pin and the outer wall of the roller is L2, and L2 is more than or equal to 1.5 mm.

A compressor adopts above-mentioned tonifying qi passageway.

An air conditioner adopts the air supply channel.

The air supply channel, the compressor and the air conditioner provided by the disclosure at least have the following beneficial effects:

the air supply channel is used for supplying air and increasing enthalpy of a rotor compressor, is suitable for a single-cylinder or double-cylinder compressor, and is characterized in that the air supply is led into a compression cavity from a first channel and a third channel on a partition plate or a flange part, an outlet is arranged at the optimal position, so that the air supply starting position is arranged at one end, close to a high-pressure cavity, of the roller and the inner wall surface of an air cylinder, the ending position is arranged at the position where the pressure of the compression cavity reaches the air supply pressure when the roller rotates to reach the air supply pressure, the problems of air supply and air suction backflow cannot occur, and the air.

Drawings

FIG. 1 is a schematic view of a compressor employing the disclosed air supplement channel;

FIG. 2 is a schematic view of a gas filling starting state of the gas filling channel according to the present disclosure and a perspective view of the gas filling channel according to the first embodiment;

FIG. 3 is a schematic view illustrating a gas filling end state of the gas filling channel according to the present disclosure;

FIG. 4 is a sectional view of the gas supply channel according to the present disclosure;

FIG. 5 is a sectional view of the gas supply channel according to the second embodiment of the present disclosure;

FIG. 6 is a perspective view of the gas supply channel of the present disclosure in a third embodiment;

FIG. 7 is a sectional view of the gas supply channel according to the third embodiment of the present disclosure;

FIG. 8 is a sectional view of the structure of the gas supply channel according to the fourth embodiment of the present disclosure.

The reference numerals are represented as:

1. a flange member; 2. a roller; 3. a crankshaft; 4. a first channel; 4.1, a first radial channel; 4.2, a first axial passage; 4.3, a first annular channel; 5. a second channel; 5.1, a first second radial channel; 5.2, a first second annular channel; 5.3, a second axial channel; 6. a third channel; 6.1, a second radial channel II; 6.2, a second annular channel II; 7. a cylinder; 8. a gas supplementing pipe; 9. sliding blades; 10. a housing; 11. an air supplement port; 12. an injection needle assembly; 13. an eccentric portion; 14. a pin; 15. an air suction opening.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the following embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. It is to be understood that the described embodiments are merely a subset of the disclosed embodiments and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

With reference to fig. 1 to 4, a first embodiment of the present disclosure discloses an air-supply channel for increasing enthalpy of air supply of a rotor compressor, including: the compressor air supplementing pipe comprises a first channel 4 and a third channel 6 which are sequentially communicated, wherein the first channel 4 is communicated with the compressor air supplementing pipe 8, the third channel 6 is communicated with a compression cavity, and the compression cavity is communicated with the air supplementing pipe 8 through the first channel 4 and the third channel 6; the first passage 4 is provided on the flange member 1 or the partition member, and when applied to a single cylinder compressor, the first passage 4 may be provided on the upper flange or the lower flange, and when applied to a double cylinder or multi cylinder compressor, the first passage 4 may be provided on the partition member. A third channel 6 is provided on the roller 2.

The air supply channel provided by the embodiment of the disclosure solves the problems that in the related art, when holes are directly punched on the air cylinder, the flange and the partition plate to the compression cavity for air supply, but the punching position is limited by the structure of the component, the position cannot reach the best, air supply backflow or air suction backflow is caused, and the air supply effect is poor.

The air supply channel of the embodiment is used for air supply and enthalpy increase of a rotor compressor, and is suitable for a single-cylinder or double-cylinder compressor, air supply is introduced into a compression cavity from the first channel 4 and the third channel 6 on a partition plate or a flange piece, an outlet is arranged at an optimal position, so that an air supply starting position is arranged at one end, close to a high-pressure cavity, of the inner wall surfaces of a roller 2 and an air cylinder 7, and an end position is arranged at a position where the pressure P4 of the compression cavity reaches the air supply pressure P3 after the roller 2 rotates to reach the air supply pressure P4, the problems of air supply and air suction backflow cannot occur, and the air supply.

In some embodiments, considering that the sizes of the roller 2, the eccentric portion 13 and the cylinder 7 need to meet the requirement of compression performance, the air supply passage further comprises a second passage 5, the second passage 5 is arranged on the crankshaft 3, the second passage 5 is communicated between the first passage 4 and the third passage 6, and the compression cavity is communicated with the air supply pipe 8 through the first passage 4, the second passage 5 and the third passage 6, so that the air supply passage can be arranged in a sufficient size range to be reasonably arranged, and an air supply outlet reaches the optimal position of the compression cavity.

In some embodiments, the crankshaft 3 and the roller 2 are fixed through the pin 14, the crankshaft 3 and the roller 2 cannot rotate relatively, so that the second channel 5 and the third channel 6 can be kept relatively stationary and are in a normally open state, the position of an air replenishing outlet in the compression cavity is relatively fixed with a contact line between the roller 2 and the cylinder 7, the period of starting and ending air replenishing is always kept at an optimal time, and the air replenishing effect is good.

In some embodiments, the first passage 4 is a reference passage for the intermediate-pressure gas to enter the compressor and is communicated with an external air supplement pipe 8, the first passage 4 comprises a first radial passage 4.1 and a first axial passage 4.2 which are communicated, the first radial passage 4.1 is arranged along the radial direction of the flange member 1 or the partition plate member, and the first axial passage 4.2 is communicated with the inner cavity of the cylinder 7 along the axial direction of the flange member 1 or the partition plate member, namely an inlet of the second passage 5.

In some embodiments, the first radial passage 4.1 corresponds to the location of an air supplement port 11 on the compressor housing 10, the air supplement tube 8 communicates with the first radial passage 4.1 through the air supplement port 11 via a tip-mounted injection needle assembly 12, intermediate-pressure gas in the air supplement tube 8 enters the first radial passage 4.1 via the injection needle assembly 12, and the first radial passage 4.1 is in sealing engagement with the injection needle assembly 12.

In some embodiments, starting from the center line of the sliding sheet 9 in the cylinder 7, when the contact line between the roller 2 and the cylinder 7 rotates within the cylinder 7 by an angle α, the suction is terminated, the air supply is started, the first passage 4, the second passage 5, the third passage 6 and the compression cavity are communicated, and the intermediate pressure air enters the compression cavity through the first passage 4, the second passage 4 and the third passage 6 to start the air supply. When the contact line of the roller 2 and the cylinder 7 rotates in the cylinder 7 by an angle beta, air supplement is finished, the first channel 4, the second channel 5 and the third channel 6 are disconnected from the compression cavity, the channels are closed, intermediate pressure gas is not injected into the compression cavity, the positions where air supplement starts and finishes are kept at the optimal positions, air suction or air supplement backflow cannot occur, and the air supplement effect is good.

In some embodiments, α is 15 ° -40 °, β is 150 ° -180 °. When the alpha and the beta satisfy the numerical value range, the sufficient air supply duration can be ensured, the position of the gas outlet is reasonably controlled, and the air suction backflow or the air supply backflow is effectively prevented.

In some embodiments, the outlet of the second radial passage on the outer wall of the roller 2 is located on one side, close to the compression cavity, of a contact line between the cylinder 7 and the roller 2, and the chord length of the second radial passage and the contact line in axial projection is L1, which satisfies that 2mm is larger than or equal to L1 is smaller than or equal to 4mm, so that the positions of starting and ending air supplement are kept at the optimal positions, air suction or air supplement backflow cannot occur, and the air supplement effect is good.

In some embodiments, the flange or the partition plate is provided with an air supply passage leading to the compression chamber, so that the air backflow is caused, the first passage 4 includes a first circumferential passage 4.3, the first circumferential passage 4.3 is a groove formed in an axial end surface of the flange 1 or the partition plate facing the cylinder 7, the first circumferential passage 4.3 is configured to be normally open to the first passage 4, the first circumferential passage 4.3 is formed in an end surface of the flange 1 or the partition plate, which is matched with the cylinder, and as the roller 2 and the eccentric portion 13 rotate, the first circumferential passage 4.3 forms a periodic conduction characteristic, the start of a conduction period just corresponds to the start of air supply, the end of the conduction period just corresponds to the end of air supply, so that the periodic air supply is realized, and when the air supply is not supplied, the air supply pipe 8 is not communicated with the compression chamber, so that the air backflow is prevented.

In some embodiments, the second channel 5 comprises a second radial channel one 5.1, based on the characteristic that the first circumferential channel 4.3 on the end surface of the flange member 1 or the partition member is provided with periodic conduction, and the second radial channel one 5.1 is a groove formed on the axial end surface of the eccentric portion 13 close to the first channel 4 along the radial direction of the eccentric portion 13; the third channel 6 comprises a second radial channel 6.1, and the second radial channel 6.1 is a groove which is formed on the axial end face of the roller 2 close to the first channel 4 along the radial direction of the roller 2;

the second radial channel one 5.1 is joined with the second radial channel two 6.1 to form a second radial channel, the second radial channel is configured to be communicated with the first annular channel 4.3 at the beginning of air supply and disconnected from the first annular channel 4.3 at the end of air supply, and the second radial channel is also configured to be normally communicated with the compression chamber.

Therefore, with the rotation of the crankshaft 3 and the roller 2, when the contact line between the roller 2 and the cylinder 7 is rotated to the angle α, the second radial passage reaches the range of the first annular passage 4.3, and the intermediate pressure gas flows through the gas supplementing pipe 8, the injection needle assembly 12, the first radial passage 4.1, the first axial passage 4.2, the first annular passage 4.3, the first second radial passage 6.1 and the second radial passage 6.2 in sequence, finally enters the compression chamber, and starts to supplement gas. The crankshaft 3 and the roller 2 continue to rotate, when the contact line of the roller 2 and the cylinder 7 rotates to an angle beta, the second radial channel is separated from the range of the first annular channel 4.3, the first annular channel 4.3 is covered by the roller 2 and the end face of the eccentric part 13 to form a blind channel, intermediate pressure gas flows to the first annular channel 4.3 along the original route and is blocked until the second radial channel rotates next time to reach the range of the first annular channel 4.3, at the moment, the air supplement is finished, and the compression cavity and the air supplement pipe are isolated.

Fig. 5 shows a second embodiment of the present disclosure, and the air replenishing channel of the second embodiment, on the basis of the first embodiment, in consideration of the uneven distribution of the gas pressure in the cylinder along the axial direction, the second channel 5 includes a second axial channel 5.3 and a second radial channel one 5.1, the second axial channel 5.3 is a hole formed in the eccentric portion 13 along the axial direction of the eccentric portion 13, and the second radial channel one 5.1 is a hole formed in the eccentric portion 13 along the radial direction of the eccentric portion 13; the third channel 6 comprises a second radial channel 6.1, and the second radial channel 6.1 is a hole formed in the roller 2 along the radial direction of the roller 2;

the second radial channel one 5.1 is joined with the second radial channel two 6.1 to form a second radial channel, the second axial channel 5.3 is configured to communicate with the first annular channel 4.3 at the beginning of air supply and to be disconnected from the first annular channel 4.3 of the second axial channel 5.3 at the end of air supply, the second axial channel 5.3 is also configured to be normally communicated with the second radial channel, and the second radial channel is communicated with the compression chamber.

Therefore, the second radial channel extends a certain distance to the inside of the cylinder along the axial direction of the cylinder 7 by the arrangement of the second axial channel 5.3, so that middle pressure gas is directly injected into the basic center of the compression cavity during air supplement, the pressure balance of the gas in the compression cavity is improved, the pulsation caused by the gas pressure difference in the compression cavity is reduced, and the performance of the compressor is improved.

Fig. 6 and 7 show a third embodiment of the present disclosure, in which the second channel 5 includes a first second circumferential channel 5.2, the first second circumferential channel 5.2 is a groove formed in an axial end face of the eccentric portion 13 adjacent to the first channel 4, the third channel 6 includes a second circumferential channel 6.2, and the second circumferential channel 6.2 is a groove formed in an axial end face of the roller 2 adjacent to the first channel 4; the second annular channel I5.2 is connected with the second annular channel II 6.2 to form a second annular channel, the second annular channel is configured to be communicated with the first channel 4 when air supply is started, and is disconnected with the first channel 4 when air supply is finished.

The second annular channel is arranged on the end faces of the eccentric part 13 and the roller 2 matched with the flange part 1 or the partition plate part, the second annular channel and the first channel 4 on the flange part 1 or the partition plate part form the characteristic of periodic conduction along with the rotation of the roller 2 and the eccentric part 13, the beginning of the conduction period just corresponds to the beginning of air supplement, and the end of the conduction period just corresponds to the end of air supplement, so that periodic air supplement is realized, and when air supplement is not performed, the air supplement pipe 8 is not communicated with the compression cavity, and the backflow of air is prevented.

In some embodiments, when the second annular channel is periodically communicated with the first channel 4, a path is needed to be set after the intermediate-pressure gas enters the second annular channel, so that the gas enters the compression cavity for air supplement. Therefore, the second channel 5 also comprises a first radial channel 5.1, and the first radial channel 5.1 is a groove which is arranged on the axial end face of the eccentric part 13 close to the first channel 4 along the radial direction of the eccentric part 13; the third channel 6 also comprises a second radial channel 6.1, and the second radial channel 6.1 is a groove which is formed on the axial end face of the roller 2 close to the first channel 4 along the radial direction of the roller 2; the first radial channel 5.1 is connected with the second radial channel 6.1 to form a second radial channel, the second annular channel is communicated with the second radial channel, and the second radial channel is communicated with the compression cavity.

Therefore, with the periodic conduction of the second annular channel, the middle pressure gas reaches the compression cavity through the second radial channel, the compression cavity is periodically supplemented with air, the air suction or air supplement backflow is avoided, and the effect is not good.

Fig. 8 shows a fourth embodiment of the present disclosure, in which, based on the third embodiment, in consideration of the uneven distribution of the gas pressure in the cylinder along the axial direction, the second passage 5 includes a first radial passage 5.1 and a second axial passage 5.3, the second axial passage 5.3 is a hole formed in the eccentric portion 13 along the axial direction of the eccentric portion 13, and the first radial passage 5.1 is a hole formed in the eccentric portion 13 along the radial direction of the eccentric portion 13; the third channel 6 comprises a second radial channel 6.1, and the second radial channel 6.1 is a hole formed in the roller 2 along the radial direction of the roller 2; the first second radial channel 5.1 is connected with the second radial channel 6.1 to form a second radial channel, the second annular channel, the second axial channel 5.3 and the second radial channel are communicated in sequence, and the second radial channel is communicated with the compression cavity.

Therefore, the second radial channel extends a certain distance to the inside of the cylinder along the axial direction of the cylinder 7 by the arrangement of the second axial channel 5.3, so that middle pressure gas is directly injected into the basic center of the compression cavity during air supplement, the pressure balance of the gas in the compression cavity is improved, the pulsation caused by the gas pressure difference in the compression cavity is reduced, and the performance of the compressor is improved.

In some embodiments, the second annular channel is provided with a cylindrical counterbore at the location where it communicates with the second axial channel 5.3.

In some embodiments, the diameter of the first annular passage 4.3 or the second annular passage and the second radial passage is D1, the diameter of the first axial passage 4.2 is D0, and D0 is D1, the first axial passage 4.2, the first annular passage 4.3, the second annular passage and the second radial passage in the air supplementing passage have the same inner diameter, and the flow of the intermediate pressure air in the air supplementing passage does not form large pressure fluctuation, so that the air supplementing pressure equalization is ensured.

In some embodiments, when the inner diameter of the channel in the air supply channel is within this range, the air supply channel can keep smaller volume on the premise of satisfying the air supply function, and the air supply channel is prevented from generating larger air supply clearance to influence the compression efficiency of the cylinder.

In some embodiments, when the air supply channel comprises a first annular channel 4.3, the center of the first annular channel 4.3 coincides with the center of the flange 1 or the flange 1, the outer diameter of the first annular channel 4.3 is D2, the outer diameter of the roller 2 is D3, the eccentricity of the crankshaft 3 is e, the minimum sealing distance between the first annular channel 4.3 and the outer wall of the roller 2 is f, and D2 is equal to or greater than D3/2-e-f;

when the air supplementing channel comprises a second annular channel, the circle center of the second annular channel is overlapped with the circle center of the flange part 1 or the partition plate part, the outer diameter of the second annular channel is D2, the outer diameter of the roller 2 is D3, the eccentric amount of the crankshaft 3 is e, the minimum sealing distance between the second annular channel and the outer wall of the roller 2 is f, and the requirement that D2 is equal to or larger than D3/2-e-f is met.

Therefore, the air supply channel in the embodiment enables the air supply starting position to be arranged at one end, close to the high-pressure cavity, of the inner wall surfaces of the roller 2 and the air cylinder 7, and the ending position is that the pressure P4 of the compression cavity reaches the air supply pressure P3 after the roller 2 rotates, so that the air supply and suction backflow problem cannot occur, the air supply effect is good, and meanwhile, the annular channel and the outer wall of the roller 2 have enough sealing distance to prevent air supply leakage.

In some embodiments, the distance between the pin 14 and the outer wall of the roller 2 is L2, which satisfies L2 ≧ 1.5mm, ensuring that the end face of the roller 2 has a sufficient sealing distance to prevent end leakage.

In some embodimentsWhen the compressor is started, the motor drives the crankshaft 3 and the roller 2 to rotate, four pressures are formed in the compressor, namely suction pressure P1, exhaust pressure P2, air supplement pressure P3 and compression cavity pressure P4, and the four pressures meet the requirements of air suction pressure P1, exhaust pressure P2, air supplement pressure P3 and compression cavity pressure P4The air replenishing effect is best, and the performance of the compressor is best.

Referring to fig. 1, an embodiment of the present disclosure provides a compressor, which employs the air supplement channel in any of the embodiments.

When the compressor in this embodiment is started, the motor drives the roller 2 and the crankshaft 3 to rotate, and the movement of the roller 2 and the sliding blade 9 causes the cylinder to generate a suction cavity, i.e., a low pressure cavity, and a high pressure cavity, i.e., a compression cavity.

According to the air supply device, the air supply pipe 8 is additionally connected to the compressor, so that a compression cavity of an air cylinder of the compressor is connected with the intermediate pressure of an air conditioning system through a channel formed by the roller 2, the crankshaft 3 and the flange piece 1, the effect of supplying air to the compressor is achieved, and the problem that the position of an air supply channel is limited in the related technology is solved.

An air conditioner adopts the air supply channel.

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

The present disclosure is to be considered as limited only by the preferred embodiments and not limited to the specific embodiments described herein, and all changes, equivalents and modifications that come within the spirit and scope of the disclosure are desired to be protected. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present disclosure, and these improvements and modifications should also be considered as the protection scope of the present disclosure.