CN111878403A - Compressor air supplementing mechanism, compressor and compressor air supplementing method - Google Patents

Compressor air supplementing mechanism, compressor and compressor air supplementing method Download PDF

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Publication number
CN111878403A
CN111878403A CN202010856191.7A CN202010856191A CN111878403A CN 111878403 A CN111878403 A CN 111878403A CN 202010856191 A CN202010856191 A CN 202010856191A CN 111878403 A CN111878403 A CN 111878403A
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China
Prior art keywords
air supplement
compressor
rotor
air
pressure
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CN202010856191.7A
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Chinese (zh)
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CN111878403B (en
Inventor
曹聪
张贺龙
李日华
毕雨时
杨亚洲
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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

Abstract

The invention relates to a compressor air supplement mechanism, a compressor and a compressor air supplement method. Thereby can select suitable tonifying qi mouth to open and carry out the tonifying qi according to the in-process that uses to the noise reduction. The situation that the noise is large because the position of the air supplementing port is not matched with the required air supplementing pressure when the compressor operates under variable working conditions is avoided.

Description

Compressor air supplementing mechanism, compressor and compressor air supplementing method
Technical Field
The invention relates to the technical field of compressors, in particular to a compressor air supplementing mechanism, a compressor and a compressor air supplementing method.
Background
In the field of compressor technology, in order to improve the cooling capacity and cooling efficiency of the compressor, an air supplement port is usually provided. When the compressor is in operation, when the rotor rotates to compress the refrigerant, the supplemented refrigerant can enter the rotor cavity from the gas supplementing port, and the refrigerating capacity is further increased. And the tonifying qi pressure and tonifying qi position based on the tonifying qi mouth are directly relevant with the operating mode of compressor, if the tonifying qi pressure or tonifying qi position of tonifying qi mouth do not match with the operating mode of compressor, then can have great noise. When the general compressor is used, the working condition can be adjusted according to actual requirements, and the conditions of full-load operation and partial-load operation can exist. In the process of using a general compressor, if the compressor is operated under variable working conditions, larger noise exists.
Disclosure of Invention
The invention provides a compressor air supplementing mechanism, a compressor and a compressor air supplementing method, aiming at the problem of high noise when a common compressor operates under variable working conditions, and the compressor air supplementing mechanism, the compressor and the compressor air supplementing method can adapt to various working conditions of the compressor and effectively reduce the noise when the compressor operates under variable working conditions.
The utility model provides a compressor tonifying qi mechanism, includes the organism, the organism is equipped with the rotor chamber that is used for installing the screw rotor, the lateral wall in rotor chamber is equipped with the tonifying qi mouth, the tonifying qi mouth is two at least, each the tonifying qi mouth is followed the axial interval of screw rotor sets up.
Above-mentioned scheme provides a compressor tonifying qi mechanism, through set up two at least tonifying qi mouths on the lateral wall in rotor chamber to the in-process of using can be according to the in-service use operating mode, selects suitable tonifying qi mouth to open and carries out the tonifying qi, thereby the noise reduction. The situation that the noise is large because the position of the air supplementing port is not matched with the required air supplementing pressure when the compressor operates under variable working conditions is avoided.
In one embodiment, the screw rotor comprises a male rotor and a female rotor which are matched with each other, the side wall of the rotor cavity comprises a first side wall which is contacted with the male rotor and a second side wall which is contacted with the female rotor, and a part of the air supplementing ports are positioned on the first side wall, and the other part of the air supplementing ports are positioned on the second side wall.
In one embodiment, the first side wall and the second side wall are provided with at least two air supplementing ports, and each air supplementing port on the same side wall is arranged at intervals along the axial direction of the corresponding rotor.
In one embodiment, the air supplement ports are arranged adjacent to the tooth spiral line on the side wall of the rotor cavity, and two adjacent air supplement ports are respectively positioned on two sides of the same tooth spiral line on the side wall of the rotor cavity.
In one embodiment, the air supplementing port comprises a plurality of small air supplementing holes, and the small air supplementing holes of the same air supplementing port are sequentially arranged at intervals along the spiral direction of the screw rotor.
In one embodiment, the machine body is provided with at least two air supplementing cavities, and the air supplementing cavities are communicated with the air supplementing ports in a one-to-one correspondence manner.
In one embodiment, the machine body includes a compression inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the compression inner cylinder, the compression inner cylinder is connected with the outer cylinder, the compression inner cylinder surrounds the rotor cavity, the air supplement port is arranged on the compression inner cylinder, the outer cylinder is provided with at least two air supplement inlets, a cavity shell for surrounding the air supplement cavity is arranged between the compression inner cylinder and the outer cylinder, and the air supplement inlets are communicated with the air supplement cavity in a one-to-one correspondence manner.
In one embodiment, the chamber housing corresponding to the adjacent air replenishing ports has a common portion which is a chamber partition plate, the chamber partition plate is a bent plate, the bent plate includes a first partition plate arranged along the axial direction of the rotor chamber and a second partition plate arranged along the circumferential direction of the rotor chamber, the first partition plate is connected with the second partition plate, and the second partition plate is located between the adjacent air replenishing ports.
In one embodiment, an air supply inlet sealing plate is arranged at the air supply inlet and used for sealing the air supply inlet.
A compressor comprises a male rotor, a female rotor and the compressor air replenishing mechanism, wherein the male rotor and the female rotor are arranged in a rotor cavity.
Above-mentioned scheme provides a compressor, through adopting the compressor tonifying qi mechanism in any above-mentioned embodiment to select suitable tonifying qi mouth to supply qi according to compressor operating mode. The situation that the noise is large because the position of the air supplementing port is not matched with the required air supplementing pressure when the compressor operates under variable working conditions is avoided.
In one embodiment, the air supply mechanism further comprises a slide valve installed in the compressor air supply mechanism, a part of side surface of the slide valve faces to the rotor cavity, the part of side surface of the slide valve is in contact with the male rotor and the female rotor, and the slide valve can slide in the axial direction of the male rotor so as to form an exhaust outlet at a position close to the suction side.
The compressor air supplementing method is characterized by being used for supplementing air to the compressor, and comprises the following steps:
obtaining the initial pressure P of the element volume according to the current compressor working conditionStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')And pressure P at each of the plurality of portsn；
According to the starting pressure PStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')Calculating the intermediate pressure PtSaid intermediate pressure
Figure BDA0002646472920000031
Judging the pressure P of each air supplement portnAnd intermediate pressure PtWith respect to said intermediate pressure PtThe difference between them is minimal and less than the intermediate pressure PtPressure P ofnThe corresponding air supplement port is used for supplementing air.
The scheme provides a compressor air supplementing method which is used for supplementing air to the compressor, and when the compressor runs stably, the intermediate pressure P is calculated according to the working conditiontAnd comparing the pressure P at each of the plurality of portsnAnd intermediate pressure PtThe proper air supplement port is selected for supplementing air according to the size relation between the air supplement ports, so that the situation that the position of the air supplement port is not matched with the required air supplement pressure when the compressor operates under variable working conditions is avoidedAnd a loud noise occurs.
A compressor air supplement method is used for supplementing air to the compressor, the side wall of the rotor cavity comprises a first side wall contacted with the male rotor and a second side wall contacted with the female rotor, at least two air supplement ports are arranged on the first side wall and the second side wall respectively, each air supplement port on the same side wall is arranged along the axial direction of the corresponding rotor at intervals, and the compressor air supplement method comprises the following steps:
obtaining the initial pressure P of the element volume according to the current compressor working conditionStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')And pressure P at each of the plurality of portsn；
According to the starting pressure PStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')Calculating the intermediate pressure PtSaid intermediate pressure
Figure BDA0002646472920000041
Determining the pressure P of each air supplement port on the same side wallnAnd intermediate pressure PtWith respect to said intermediate pressure PtThe difference between them is minimal and less than the intermediate pressure PtPressure P ofnThe corresponding air supplement port is used for supplementing air.
The scheme provides a compressor air supplementing method which is used for supplementing air to the compressor, and when the compressor runs stably, the intermediate pressure P is calculated according to the working conditiontAnd comparing the pressure P at each air supply port on the same side wallnAnd intermediate pressure PtThe size relation between, all select suitable tonifying qi mouth to carry out the tonifying qi on first lateral wall and second lateral wall to avoid the compressor when becoming operating mode operation, because tonifying qi mouth position and required tonifying qi pressure mismatch, and the great condition of noise takes place. And because the air supplementing ports are arranged on the first side wall and the second side wall to participate in the air supplementing process, the air supplementing amount of a single air supplementing port is reduced. Thereby reducing the flow velocity of the air supplementing port and further reducing the noise.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a front view of a compressor according to the present embodiment;
FIG. 2 is an isometric view of the compressor shown in FIG. 1;
FIG. 3 is a cross-sectional view of the compressor of FIG. 1 shown with the female and male rotors concealed;
FIG. 4 is a cross-sectional view of the male rotor side of the air supplement mechanism of the compressor according to the present embodiment;
FIG. 5 is a cross-sectional view of the female rotor side of the air supplement mechanism of the compressor according to the present embodiment;
FIG. 6 is a sectional view of the gas replenishing cavity of the gas replenishing mechanism of the compressor according to the present embodiment;
FIG. 7 is a schematic structural view of a seal plate of an inlet for supplying air in the air supplying mechanism of the compressor of this embodiment;
FIG. 8 is a cross-sectional view of the compressor at 75% load;
fig. 9 is a cross-sectional view of the compressor at 50% load.
Description of reference numerals:
10. a compressor; 11. a female rotor; 12. a male rotor; 13. a spool valve; 131. an exhaust outlet; 20. a compressor air supplement mechanism; 21. a body; 211. a rotor cavity; 212. a first side wall; 213. a second side wall; 214. an air supplement port; 2141. small air-replenishing holes; 215. a suction helix; 216. a first tooth helix; 217. a second tooth helix; 218. compressing the inner cylinder; 219. an outer cylinder; 22. a chamber housing; 221. a first separator; 222. a second separator; 23. a rib plate; 24. a side plate; 25. a gas supplementing sealing plate; 26. an air supplement cavity; 27. an air supply inlet seal plate.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In one embodiment, as shown in fig. 4 and 5, a compressor air supplement mechanism 20 is provided, which includes a body 21, the body 21 being provided with a rotor cavity 211 for mounting a screw rotor. As shown in fig. 1 and 2, the compressor air supply mechanism 20 is used in a compressor 10, the screw rotors include a male rotor 12 and a female rotor 11 of the compressor 10, the male rotor 12 and the female rotor 11 are installed in the rotor cavity 211, and the compression of the gas is realized through the rotary engagement of the male rotor 12 and the female rotor 11.
Further, as shown in fig. 1 to 3, in one embodiment, the compressor 10 includes a slide valve 13, the slide valve 13 is installed in the compressor air supply mechanism 20, a part of the side surface of the slide valve 13 faces the rotor cavity 211, and the part of the side surface of the slide valve 13 contacts with the male rotor 12 and the female rotor 11. The slide valve 13, the machine body 21, the male rotor 12 and the female rotor 11 form a closed compression cavity together, and the element volume between the teeth of the male rotor and the female rotor 12 changes in the rotating and meshing process of the male rotor 12 and the female rotor 11, so that the compression of gas is realized.
As shown in fig. 8 and 9, the slide valve 13 is slidable in the axial direction of the male rotor 12 or the female rotor 11, so that an exhaust outlet 131 is formed at a position close to the suction side. Allowing compressor 10 to have different load conditions.
The optimum air supply pressure and the air supply position are different under different working conditions based on different working conditions of the compressor 10. Therefore, in one embodiment, as shown in fig. 3 to 5, a compressor air supplement mechanism 20 is provided, the compressor air supplement mechanism 20 includes at least two air supplement ports 214 on the side wall of the rotor cavity 211, and each air supplement port 214 is arranged at intervals along the axial direction of the screw rotor.
Therefore, the air supply port 214 is properly selected to be opened for air supply according to actual use working conditions in the use process, and the noise is reduced. The situation that the noise is large because the position of the air supplement port 214 is not matched with the required air supplement pressure when the compressor 10 operates under variable working conditions is avoided.
Specifically, when the operating condition of the compressor 10 is determined, the initial pressure P of the elementary volumeStarting pointEnd pressure PFinal (a Chinese character of 'gan')And pressure P at each of the plurality of supply ports 214nCan be obtained by calculation. According to the starting pressure PStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')Calculating the intermediate pressure PtSaid intermediate pressure
Figure BDA0002646472920000071
Said intermediate pressure PtThe optimal pressure for the supply of air is reached. Pressure P at each of the locations of the ports 214 spaced axially along the screw rotornDifferent. Thus, the pressure P at each of the plurality of supply ports 214 may be comparednAnd intermediate pressure of PtThe proper air supply port 214 is selected for air supply according to the size relationship.
When the operating conditions of compressor 10 are determined, the pressure at suction helix 215 and the corresponding pressure at each tooth helix are determined accordingly. Specifically, taking the male rotor 12 as 5 teeth as an example, the positions of the suction helix 215, the first tooth helix 216 and the second tooth helix 217 are shown in fig. 3. The first helical tooth line 216 is a 72 ° rotation of the aspiration helix 215 and the second helical tooth line is a 144 ° rotation of the aspiration helix 215. The two air supply ports 214 are respectively arranged corresponding to the first helical gear 216 and the second helical gear 217. Two adjacent air supplement ports 214 are respectively positioned on two sides of the same tooth spiral line on the side wall of the rotor cavity 211. For example, as shown in FIG. 3, the number of the air supply ports 214 is two, and one air supply port 2 is provided14 are located on the side of the first tooth helix 216 adjacent to the second tooth helix 217 and the other of the plurality of charging ports 214 is located on the side of the second tooth helix 217 remote from the first tooth helix 216. In other words, the air supplement ports 214 are disposed adjacent to the tooth helix on the sidewall of the rotor cavity 211. Thus, when the operating condition of the compressor 10 is determined, the pressures at the two air supply ports 214 are close to the pressure at the corresponding tooth spiral line, and the pressure at the corresponding tooth spiral line under the operating condition is compared with the intermediate pressure PtThe proper air supply port 214 is selected for air supply according to the size relationship.
Further, in one embodiment, as shown in fig. 4 and 5, the sidewalls of the rotor cavity 211 include a first sidewall 212 in contact with the male rotor 12 and a second sidewall 213 in contact with the female rotor 11. A portion of the air supplement port 214 is located on the first sidewall 212, and another portion of the air supplement port 214 is located on the second sidewall 213. In other words, the air supply ports 214 for supplying air selected in the above-described manner of selecting the air supply ports 214 may be located on the male rotor 12 side or the female rotor 11 side.
Alternatively, the air supply ports 214 may be disposed on the first sidewall 212 or the second sidewall 213, as long as each air supply port 214 is disposed at an interval along the axial direction of the male rotor 12 or the female rotor 11, so as to meet different requirements of operating conditions.
Further, in another embodiment, at least two air supplement ports 214 are disposed on each of the first sidewall 212 and the second sidewall 213, and each air supplement port 214 on the same sidewall is spaced along the axial direction of the corresponding rotor. In other words, the air replenishing ports 214 on the first side wall 212 and the second side wall 213 can be opened during air replenishing.
Specifically, the pressure P at each of the transfer ports 214 on the same sidewall is comparednAnd intermediate pressure of PtThe size relationship of (a) and (b), the proper air replenishing port 214 is selected from the first side wall 212 and the second side wall 213 for replenishing air. Therefore, under the same working condition, the air supplementing ports 214 are arranged on both sides of the male and female rotors for supplementing air, so that the air supplementing amount of a single air supplementing port 214 is reduced, the flow rate is reduced, and further the air supplementing quantity is reducedThe noise is reduced. And based on the difference of general tooth number of the rotor of negative and positive, the tonifying qi position of selecting respectively on first lateral wall 212 and second lateral wall 213 has some differences, and two tonifying qi mouths 214 tonifying qi are asynchronous when tonifying qi, have certain pulsation difference to according to the sound wave interference keeps away from, finally further noise reduction.
Further, as shown in fig. 3 to 6, and fig. 8 and 9, in one embodiment, the gas supplementing opening 214 includes a plurality of gas supplementing small holes 2141, and the plurality of gas supplementing small holes 2141 of the same gas supplementing opening 214 are sequentially arranged at intervals along the spiral direction of the screw rotor. After the working condition is determined, after the proper air supply port 214 is selected, each air supply small hole 2141 included in the air supply port 214 participates in the air supply process. Specifically, the number of the small air supply holes 2141 is determined comprehensively according to the air supply flow rate required by the air supply port 214 for air supply and the aperture of each small air supply hole 2141. In the case where the flow rate of the gas supply is determined, the smaller the aperture of the gas supply holes 2141 is, the larger the number of the gas supply holes 2141 is.
Further, as shown in fig. 3 to 6, in an embodiment, the machine body 21 is provided with at least two air supply chambers 26, and the air supply chambers 26 are in one-to-one correspondence with the air supply ports 214. The gas needed for supplying gas passes through the gas supply chamber 26 and then enters the rotor chamber 211 from the gas supply port 214.
More specifically, in one embodiment, as shown in fig. 1-5, the housing 21 includes a compression inner cylinder 218 and an outer cylinder 219. The outer barrel 219 is sleeved outside the compression inner barrel 218, and the compression inner barrel 218 is connected with the outer barrel 219. The compression inner cylinder 218 encloses the rotor cavity 211, and the air supplement port 214 is provided on the compression inner cylinder 218. As shown in fig. 7, the outer cylinder 219 is provided with at least two air supply inlets, and the air supply inlets are in one-to-one correspondence with the air supply chambers 26. A cavity shell 22 for enclosing the air replenishing cavity 26 is arranged between the compression inner cylinder 218 and the outer cylinder 219.
When a proper air supplementing position is selected, the air supplementing inlet corresponding to the air supplementing port 214 at the position is opened, and the air to be supplemented enters the air supplementing cavity 26 from the air supplementing inlet and then enters the rotor cavity 211 from the air supplementing port 214. When the air supply ports 214 are arranged on both sides of the male and female rotors, the corresponding cavity shell 22 is respectively arranged on both sides of the male and female rotors, and similarly, each air supply inlet is also correspondingly arranged on the outer cylinder 219 at a position corresponding to the cavity shell 22. In other words, the chamber housing 22 and the supply air inlet are disposed corresponding to the position of the supply air port 214.
For example, in the compressor 10 shown in fig. 1, the cavity housing 22 corresponding to the air supplement port 214 on the first side wall 212 on the male rotor 12 side is located at the lower right corner of the male rotor 12. The chamber housing 22 corresponding to the air replenishing port 214 on the second side wall 213 on the female rotor 11 side is located in the upper left corner of the female rotor 11. The orientation relationship between the lower right corner and the upper left corner as described herein refers to the corresponding orientation relationship when the compressor 10 is placed at the angle shown in fig. 1.
In one embodiment, as shown in fig. 4-6, chamber housings 22 corresponding to adjacent air replenishment ports 214 have a common portion that is a chamber partition. As shown in fig. 6, the chamber partition is a bent plate including a first partition 221 arranged in an axial direction of the rotor chamber 211 and a second partition 222 arranged in a circumferential direction of the rotor chamber 211, the first partition 221 is connected to the second partition 222, and the second partition 222 is located between adjacent air supplement ports 214. Thereby dividing the adjacent air supplement ports 214, and the first partition plate 221 is connected to the second partition plate 222 at one end and the other end of the chamber shell 22 at the other end when arranged in the axial direction, so as to form the closed air supplement chamber 26.
Specifically, as shown in fig. 3 and 4, a rib 23 is originally provided between the compression inner cylinder 218 and the outer cylinder 219, and the rib 23 constitutes a part of the structure of the chamber housing 22. The chamber shell 22 corresponding to the adjacent air supplement ports 214 is combined to form an auxiliary shell. As shown in fig. 6, the auxiliary housing further includes an air-supplying sealing plate 25 and two opposite side plates 24, both side plates 24 are connected to the rib 23, and the side plates 24 are arranged along the axial direction of the rotor cavity 211, and the bent plate is located between the two side plates 24. The second partition plate 222 is connected between one of the side plates 24 and the first partition plate 221, an opening is formed between one end of the first partition plate 221, which is not connected with the second partition plate 222, and the two side plates 24 at intervals, and the air replenishing seal plate 25 seals the opening to form the closed air replenishing cavity 26. It can be understood that the air-supplying sealing plate 25 is spaced opposite to the rib plate 23, the two side plates 24 are spaced opposite to each other, the four plates enclose a closed space, the bending plate is disposed in the closed space to divide the closed space into two air-supplying chambers 26, and one air-supplying chamber 26 is correspondingly communicated with one air-supplying port 214.
Further, as shown in fig. 2 and 7, in one embodiment, an air supply inlet sealing plate 27 is provided at the air supply inlet for sealing the air supply inlet. When the proper air replenishing port 214 is selected for the air replenishing port 214, the air replenishing inlet closed by the corresponding air replenishing sealing plate 25 is opened.
Further, in another embodiment, a method for supplying air to a compressor 10 is provided, and is characterized in that the method is used for supplying air to the compressor 10, and the method for supplying air to the compressor 10 includes the following steps:
acquiring the initial pressure P of the elementary volume according to the current working condition of the compressor 10Starting pointAnd an end pressure PFinal (a Chinese character of 'gan')And pressure P at each of the plurality of ports 214n；
According to the starting pressure PStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')Calculating the intermediate pressure PtSaid intermediate pressure
Figure BDA0002646472920000111
Determining the pressure P of each of the plurality of supply ports 214nAnd intermediate pressure PtWith respect to said intermediate pressure PtThe difference between them is minimal and less than the intermediate pressure PtPressure P ofnThe corresponding air supplement port 214 is used for supplementing air.
The scheme provides a compressor 10 air supplementing method which is used for supplementing air to the compressor 10, and when the compressor 10 runs stably, the air supplementing method is carried out according to the working conditionsCalculating an intermediate pressure PtAnd comparing the pressure P at each of the plurality of ports 214nAnd intermediate pressure PtThe proper air supplement port 214 is selected for air supplement according to the size relationship between the air supplement ports, so that the situation that the noise is large due to the fact that the position of the air supplement port 214 is not matched with the required air supplement pressure when the compressor 10 operates under variable working conditions is avoided.
Further, in another embodiment, a method for supplying air to a compressor 10 is provided, for supplying air to the compressor 10, where the side wall of the rotor cavity 211 includes a first side wall 212 contacting with the male rotor 12 and a second side wall 213 contacting with the female rotor 11, each of the first side wall 212 and the second side wall 213 is provided with at least two air supply ports 214, and each air supply port 214 on the same side wall is spaced along the axial direction of the corresponding rotor, the method for supplying air to the compressor 10 includes the following steps:
acquiring the initial pressure P of the elementary volume according to the current working condition of the compressor 10Starting pointAnd an end pressure PFinal (a Chinese character of 'gan')And pressure P at each of the plurality of ports 214n；
According to the starting pressure PStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')Calculating the intermediate pressure PtSaid intermediate pressure
Figure BDA0002646472920000112
Determining the pressure P of each of the plurality of air supply ports 214 on the same sidewallnAnd intermediate pressure PtWith respect to said intermediate pressure PtThe difference between them is minimal and less than the intermediate pressure PtPressure P ofnThe corresponding air supplement port 214 is used for supplementing air.
The scheme provides a compressor 10 air supplementing method which is used for supplementing air to the compressor 10, and when the compressor 10 runs stably, the intermediate pressure P is calculated according to the working conditiontAnd comparing the pressure P at each of the plurality of ports 214 on the same sidewallnAnd intermediate pressure PtThe size relationship between the first sidewall 212 and the second sidewall 213 selects suitable air supplementing openings214 to prevent the occurrence of loud noises due to the mismatch between the position of the air supply port 214 and the required air supply pressure when the compressor 10 is operated under variable conditions. Moreover, the air supplement ports 214 are formed on the first side wall 212 and the second side wall 213 to participate in the air supplement process, so that the air supplement amount of the single air supplement port 214 is reduced. Thereby reducing the flow velocity of the air supply port 214 and further reducing the noise.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (13)

1. The utility model provides a compressor tonifying qi mechanism, its characterized in that, includes the organism, the organism is equipped with the rotor chamber that is used for installing screw rotor, the lateral wall in rotor chamber is equipped with the tonifying qi mouth, the tonifying qi mouth is two at least, each the tonifying qi mouth is followed screw rotor's axial interval sets up.
2. The compressor air supplement mechanism of claim 1, wherein the screw rotor comprises a male rotor and a female rotor that mate with each other, the side wall of the rotor cavity comprises a first side wall that contacts the male rotor and a second side wall that contacts the female rotor, and a portion of the air supplement port is located on the first side wall and another portion of the air supplement port is located on the second side wall.
3. The compressor air supplement mechanism of claim 2, wherein at least two air supplement ports are disposed on each of the first side wall and the second side wall, and each air supplement port on the same side wall is spaced along an axial direction of the corresponding rotor.
4. The compressor air supplement mechanism of claim 1, wherein the air supplement ports are disposed adjacent to a tooth spiral on the sidewall of the rotor cavity, and two adjacent air supplement ports are respectively located on two sides of the same tooth spiral on the sidewall of the rotor cavity.
5. The compressor air supplement mechanism according to any one of claims 1 to 4, wherein the air supplement port comprises a plurality of air supplement small holes, and the plurality of air supplement small holes of the same air supplement port are sequentially arranged at intervals along the spiral direction of the screw rotor.
6. The compressor air supplement mechanism according to any one of claims 1 to 4, wherein the machine body is provided with at least two air supplement cavities, and the air supplement cavities are communicated with the air supplement ports in a one-to-one correspondence manner.
7. The compressor air supplement mechanism according to claim 6, wherein the machine body comprises a compression inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the compression inner cylinder, the compression inner cylinder is connected with the outer cylinder, the compression inner cylinder encloses the rotor cavity, the air supplement port is arranged on the compression inner cylinder, the outer cylinder is provided with at least two air supplement inlets, a cavity housing for enclosing the air supplement cavity is arranged between the compression inner cylinder and the outer cylinder, and the air supplement inlets are communicated with the air supplement cavities in a one-to-one correspondence manner.
8. The compressor air supplement mechanism of claim 7, wherein the chamber housing corresponding to adjacent air supplement ports has a common portion, the common portion is a chamber partition, the chamber partition is a bent plate, the bent plate includes a first partition arranged along an axial direction of the rotor chamber and a second partition arranged along a circumferential direction of the rotor chamber, the first partition is connected with the second partition, and the second partition is located between the adjacent air supplement ports.
9. The compressor air supplement mechanism of claim 7, wherein an air supplement inlet sealing plate is disposed at the air supplement inlet for sealing the air supplement inlet.
10. A compressor comprising a male rotor, a female rotor and the compressor air supplement mechanism of any one of claims 1 to 9, said male rotor and said female rotor being mounted in said rotor chamber.
11. The compressor of claim 10, further comprising a slide valve installed in the compressor air supplement mechanism, a portion of a side surface of the slide valve facing the rotor chamber being in contact with the male and female rotors, the slide valve being slidable in an axial direction of the male rotor to form an exhaust outlet at a position close to a suction side.
12. A compressor air-replenishing method for replenishing air to the compressor of claim 10 or 11, the compressor air-replenishing method comprising the steps of:
obtaining the initial pressure P of the element volume according to the current compressor working conditionStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')And pressure P at each of the plurality of portsn；
According to the starting pressure PStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')Calculating the intermediate pressure PtSaid intermediate pressure
Figure FDA0002646472910000021
Judging the pressure P of each air supplement portnAnd intermediate pressure PtWith respect to said intermediate pressure PtThe difference between them is minimal and less than the intermediate pressure PtPressure P ofnThe corresponding air supplement port is used for supplementing air.
13. A method for supplying gas to a compressor according to claim 10 or 11, wherein the side walls of the rotor chamber include a first side wall contacting the male rotor and a second side wall contacting the female rotor, at least two gas supply ports are provided on each of the first side wall and the second side wall, and each gas supply port on the same side wall is spaced along the axial direction of the corresponding rotor, the method comprising the steps of:
obtaining the initial pressure P of the element volume according to the current compressor working conditionStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')And pressure P at each of the plurality of portsn；
According to the starting pressure PStarting pointAnd an end pressure PFinal (a Chinese character of 'gan')Calculating the intermediate pressure PtSaid intermediate pressure
Figure FDA0002646472910000031
Judgment ofPressure P of each air supplement port on the same side wallnAnd intermediate pressure PtWith respect to said intermediate pressure PtThe difference between them is minimal and less than the intermediate pressure PtPressure P ofnThe corresponding air supplement port is used for supplementing air.
CN202010856191.7A 2020-08-24 Compressor air supplementing mechanism, compressor and compressor air supplementing method Active CN111878403B (en)

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CN106949051A (en) * 2017-03-20 2017-07-14 珠海格力电器股份有限公司 Compressor guiding valve and the helical-lobe compressor with it
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CN110578690A (en) * 2019-10-21 2019-12-17 无锡锡压压缩机有限公司 Interstage pressure adjusting structure of two-stage screw air compressor
CN210799361U (en) * 2019-07-29 2020-06-19 珠海格力电器股份有限公司 Compressor and air conditioning system
CN212454832U (en) * 2020-08-24 2021-02-02 珠海格力电器股份有限公司 Compressor air supplement mechanism and compressor

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Publication number Priority date Publication date Assignee Title
JPH10141261A (en) * 1996-11-08 1998-05-26 Mayekawa Mfg Co Ltd Screw compressor
WO2005066503A1 (en) * 2004-01-08 2005-07-21 Koichi Hatamura Positive displacement compressor and supercharger using the same
JP2009215882A (en) * 2008-03-06 2009-09-24 Ihi Corp Screw compressor
CN106949051A (en) * 2017-03-20 2017-07-14 珠海格力电器股份有限公司 Compressor guiding valve and the helical-lobe compressor with it
CN107829932A (en) * 2017-11-30 2018-03-23 珠海格力电器股份有限公司 Helical-lobe compressor, the apparatus of air conditioning and its volumetric efficiency adjusting method
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