CN114412785B - Wide-temperature-range constant-temperature rotor type double-screw refrigeration compressor - Google Patents
Wide-temperature-range constant-temperature rotor type double-screw refrigeration compressor Download PDFInfo
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- CN114412785B CN114412785B CN202210308527.5A CN202210308527A CN114412785B CN 114412785 B CN114412785 B CN 114412785B CN 202210308527 A CN202210308527 A CN 202210308527A CN 114412785 B CN114412785 B CN 114412785B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 90
- 238000003825 pressing Methods 0.000 claims description 32
- 238000013016 damping Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 15
- 239000003507 refrigerant Substances 0.000 description 13
- 239000010687 lubricating oil Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 239000010724 circulating oil Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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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
- 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
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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
- 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
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/084—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- 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
- F04C29/04—Heating; Cooling; Heat insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention aims to provide a wide-temperature-range constant-temperature rotor type double-screw refrigerating compressor, which comprises a refrigerating machine shell, wherein a plurality of rotors are connected in the refrigerating machine shell in a rotating and meshing manner, and both axial ends of the refrigerating machine shell are elastically and slidably connected with a heat conducting liquid circulating box; the two ends of the rotor are coaxially and fixedly provided with rotating shafts, and the rotating shafts axially penetrate through and are circumferentially and rotatably connected to the shell of the refrigerator and the heat conducting liquid circulating box; communicated cavities are axially formed in the rotor and the rotating shaft, and a plurality of liquid through holes communicated with the cavities and the inner cavity of the heat conducting liquid circulating box are radially formed in the rotating shaft. The double-screw refrigerator is provided with the cooling circulation passage at the axis of the rotor, the cooling effect of the rotor is obviously superior to that of the single rotor outer wall cooling in the prior art, and the double-screw refrigerator is particularly suitable for the field of high-rotating-speed and ultrahigh-pressure refrigeration equipment.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a wide-temperature-range constant-temperature rotor type double-screw refrigeration compressor.
Background
The double-screw refrigerating machine mainly comprises a main machine, wherein a male rotor and a female rotor are arranged in the main machine, the male rotor and the female rotor are meshed with each other, a male rotor shaft is driven by a power device to rotate, the female rotor rotates along with the male rotor shaft in a synchronous meshing manner, so that a gaseous refrigerant sucked into the main machine is compressed, lubricating oil is sprayed in the compression process, after the compression is completed, the main machine inputs a compressed oil-gas mixture into an oil-gas separator to perform oil-gas separation, the separated compressed gaseous refrigerant enters engineering mechanical equipment to work, the separated lubricating oil is gathered at the bottom of the oil-gas separator and is pressed into a cooler to be cooled by virtue of air pressure, and the cooled lubricating oil returns to the main machine to form an oil cooling cycle outside the rotors.
However, due to the meshing friction between the male rotor and the female rotor and the self-heating of the compressed gaseous refrigerant, the cooling requirement cannot be met only by the oil cooling circulation outside the rotors at a high rotating speed, so that the heating problem of the double-screw refrigerating machine always exists, and the application range of the double-screw refrigerating machine in the high-pressure and even ultrahigh-pressure field is severely limited.
And before the double-screw refrigerating machine in the prior art is initially started in a cold area, lubricating oil in the double-screw refrigerating machine is very easy to condense and freeze due to too low temperature, and the double-screw refrigerating machine in the prior art does not have a starting preheating function, so that the condensed and frozen lubricating oil cannot be unfrozen in a heating mode, and the screw is very easy to wear.
Therefore, how to design a twin-screw refrigerator to structurally solve the contradiction between the rotor speed and the rotor heating of the twin-screw refrigerator through multiple cooling cycles is a problem to be solved urgently by the technical personnel in the field.
Through published patent searches, the following comparison documents were found:
CN103401353A discloses an oil-cooled screw gaseous refrigerant compressor coaxial with a motor, which comprises a gaseous refrigerant compressor main machine and a circulating oil system, wherein the tail part of the gaseous refrigerant compressor main machine is provided with a machine body bracket, a motor shell is installed on the machine body bracket in a centering manner, and a cooling interlayer is arranged on the motor shell; the inner wall of the motor shell is provided with a motor stator, a motor rotor is arranged in the motor shell, and the motor rotor is fastened with a driving shaft of a main machine of the gaseous refrigerant compressor to form a whole; and the cooling interlayer on the motor shell is communicated with the circulating oil system through an oil pipe. The rotor of the motor is arranged on the driving shaft of the main machine of the gaseous refrigerant compressor, so that the transmission efficiency of the motor reaches 100 percent, the purpose of integrating the motor and the main machine of the gaseous refrigerant compressor is achieved, the motor has no bearing, the fault point of the motor is eliminated, and the maintenance-free performance of the motor is realized.
Through the analysis, the oil cooling screw gaseous state refrigerant compressor in the above-mentioned patent, and the coaxial cooling structure with the motor only be for cladding cooling cycle cavity on motor housing, and it makes the cooling effect improve though adopt oil cooling to replace the forced air cooling, but it does not accomplish the circulative cooling of rotor axle center, especially compares in the aspect of circulation oil circuit and cooling effect with this application and has great difference, and does not set up elasticity and subtract shock insulation structure, consequently does not influence the novelty of this application.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a wide-temperature-range constant-temperature rotor type double-screw refrigerating compressor.
The wide-temperature-range constant-temperature rotor type double-screw refrigeration compressor comprises a refrigeration machine shell, wherein a plurality of rotors are connected in the refrigeration machine shell in a rotating and meshing manner, and both axial ends of the refrigeration machine shell are elastically and slidably connected with a heat conducting liquid circulating box; the two ends of the rotor are coaxially and fixedly provided with rotating shafts, and the rotating shafts axially penetrate through and are circumferentially and rotatably connected to the shell of the refrigerator and the heat conducting liquid circulating box; communicated cavities are axially formed in the rotor and the rotating shaft, and a plurality of liquid through holes communicated with the cavities and the inner cavity of the heat conducting liquid circulating box are radially formed in the rotating shaft.
Moreover, both ends of the shell of the refrigerator are axially and adjustably connected with a plurality of counter-pulling screw rods, the middle sections of the counter-pulling screw rods are in sliding fit and inserted with the heat conduction liquid circulation box, and the other ends of the counter-pulling screw rods are adjustably connected with the compression end sockets; damping springs are axially and slidably sleeved on the opposite-pulling screw rods at the two ends of the heat-conducting liquid circulation box, the damping spring at one end is supported on the axial end faces of the refrigerator shell and the heat-conducting liquid circulation box in a jacking mode, and the damping spring at the other end is supported on the axial end faces of the heat-conducting liquid circulation box and the pressing end socket in a jacking mode.
And both ends of the opposite-pulling screw rod are in threaded connection with fastening nuts, wherein the fastening nut at one end is supported on the refrigerator shell in a pressing and pressing manner, and the fastening nut at the other end is supported on the end face of the pressing seal head in a pressing and pressing manner.
And the rotating shafts at the two ends of the rotor sequentially rotate in the circumferential direction and axially penetrate through the shell of the refrigerator in a sealing manner, the heat conducting liquid circulating box and the pressing end socket.
And moreover, the inside of each heat conducting liquid circulation box is fixedly sealed with a partition plate for separating the inner cavity of the heat conducting liquid circulation box, and the separated inner cavities of the plurality of heat conducting liquid circulation boxes are in one-to-one correspondence with the rotating shafts of the plurality of rotors.
And a shell of the heat conducting liquid circulating box is fixedly provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the inner cavity of the heat conducting liquid circulating box.
And one end of the shell of the refrigerator is fixedly provided with an air inlet pipe and an oil inlet pipe, and the other end of the shell of the refrigerator is fixedly provided with an oil gas discharge pipe.
And the rotor comprises a male rotor and a female rotor, wherein rotating shafts at two ends of the male rotor penetrate through the pressing seal heads respectively and are in power connection with the transmission belt, and rotating shafts at two ends of the female rotor penetrate through the pressing seal heads respectively and are in axial limit connection with end faces of the pressing seal heads.
The invention has the advantages and technical effects that:
the wide temperature range constant temperature rotor type double-screw refrigeration compressor of the invention: 1. the main body of the refrigerator is fixedly supported by a refrigerator shell, an inner cavity of the refrigerator shell is used for providing radial limiting, circumferential rotation guiding and gaseous refrigerant pressurizing spaces for a rotor, and two ends of the refrigerator shell provide axial elastic sliding supports for a heat conducting liquid circulation box and a compression end socket; 2. circulating heat conducting liquid is introduced into each rotating shaft through a plurality of inner cavities which are sealed and separated by partition plates in the heat conducting liquid circulating box, and liquid through holes which are radially formed in the rotating shaft and cavities inside the rotating shaft and the rotor are used as circulating liquid paths of the heat conducting liquid, so that the axis cooling function of the rotor is realized; 3. under the cold working condition, lubricating oil in the double-screw refrigerator is condensed and frozen, and heat conducting liquid which circulates and is preheated can be introduced into each rotating shaft through a plurality of inner cavities which are sealed and separated by the partition plates in the heat conducting liquid circulating box, so that the preheating and lubricating functions of the double-screw refrigerator before starting are realized under the static condition of the screw, and the screw is prevented from being started in the state that the lubricating oil is condensed and frozen; 4. thermal conductance liquid circulation case and pressure head are through the both ends of split screw axial sliding connection at the refrigerator casing to the damping spring through the suit on the split screw absorbs the pivot and conducts the vibrations on thermal conductance liquid circulation case through sealed bearing, effectively improve the life of thermal conductance liquid circulation case and pivot hookup location, avoid the axial seal failure problem of thermal conductance liquid circulation case and pivot hookup location, and can be by the vibration power that the spring absorption refrigerator operation in-process rotor meshing rotated and brought, and the vibration power that the gaseous state refrigerant compression produced, thereby realize vibration/noise reduction function.
Drawings
FIG. 1 is a half sectional view of the present invention;
FIG. 2 is a half sectional view of the male and female rotors of the present invention;
FIG. 3 is a schematic diagram of the system connection of the refrigerant compressor of the present invention;
in the figure: 1, pressing a seal head; 2-heat conducting liquid circulating box; 3-a rotating shaft; 4-a rotor; 5-a refrigerator shell; 6-oil inlet pipe; 7-a damping spring; 8-oppositely pulling the screw rod; 9-a liquid discharge pipe; 10-liquid through hole; 11-a transmission belt; 12-a separator; 13-a liquid inlet pipe; 14-an air inlet pipe; 15-oil gas discharge pipe; 16-a sealed bearing; 17-a fastening nut; 18-a cavity; 19-male rotor; 20-female rotor; 21-a hose; 22-frame.
Detailed Description
For a further understanding of the contents, features and effects of the present invention, reference will now be made to the following examples, which are to be considered in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.
The wide-temperature-range constant-temperature rotor type double-screw refrigerating compressor comprises a refrigerator shell 5, wherein a plurality of rotors 4 are rotatably meshed and connected in the refrigerator shell, and both axial ends of the refrigerator shell are elastically connected with a heat conducting liquid circulating box 2 in a sliding manner; the two ends of the rotor are coaxially and fixedly provided with rotating shafts 3, and the rotating shafts axially penetrate through and are circumferentially and rotatably connected to the shell of the refrigerator and the heat conducting liquid circulating box; communicated cavities 18 are axially formed in the rotor and the rotating shaft, and a plurality of liquid through holes 10 communicated with the cavities and the inner cavity of the heat conducting liquid circulating box are radially formed in the rotating shaft.
Moreover, both ends of the shell of the refrigerator are axially and adjustably connected with a plurality of opposite-pulling screw rods 8, the middle sections of the opposite-pulling screw rods are in sliding fit and inserted with the heat conduction liquid circulation box, and the other ends of the opposite-pulling screw rods are adjustably connected with the compression seal heads 1; damping springs 7 are axially slidably sleeved on the opposite-pulling screw rods at the two ends of the heat-conducting liquid circulation box, wherein the damping spring at one end is supported on the axial end faces of the refrigerator shell and the heat-conducting liquid circulation box in a jacking mode, and the damping spring at the other end is supported on the axial end faces of the heat-conducting liquid circulation box and the pressing end socket in a jacking mode.
And both ends of the opposite-pulling screw rod are in threaded connection with fastening nuts 17, wherein the fastening nut at one end is supported on the refrigerator shell in a pressing and pressing manner, and the fastening nut at the other end is supported on the end face of the pressing seal head in a pressing and pressing manner.
And rotating shafts at two ends of the rotor sequentially rotate in the circumferential direction and penetrate through the shell of the refrigerator, the heat conducting liquid circulating box and the pressing end enclosure in an axial sealing manner.
And the inside of the heat conducting liquid circulating box is fixedly and hermetically provided with a clapboard 12 for separating the inner cavity of the heat conducting liquid circulating box, and the separated inner cavities of the heat conducting liquid circulating box correspond to the rotating shafts of the rotors one by one.
And a liquid inlet pipe 13 and a liquid outlet pipe 9 which are communicated with the inner cavity of the heat conducting liquid circulating box are fixedly arranged on the shell of the heat conducting liquid circulating box.
And, the one end of the refrigerator shell is fixedly provided with an air inlet pipe 14 and an oil inlet pipe 6, and the other end of the refrigerator shell is fixedly provided with an oil gas discharge pipe 15.
And the rotor comprises a male rotor 19 and a female rotor 20, wherein the rotating shafts at the two ends of the male rotor respectively penetrate through the pressing seal heads and are in power connection with the transmission belt 11, and the rotating shafts at the two ends of the female rotor respectively penetrate through the pressing seal heads and are in axial limit connection with the end faces of the pressing seal heads.
In addition, preferably, the circumferential end surfaces of the pressing end socket, the heat conducting liquid circulating box and the shell of the refrigerator are all embedded with sealing bearings 16, the sealing bearings circumferentially rotate and axially seal and insert the rotating shaft, and the sealing bearings and the axial sealing connection mode of the sealing bearings and the rotating shaft respectively adopt mature products in the prior art and mature technical means in the prior art.
In addition, the invention preferably adopts the mature technical means in the prior art for the power connection mode of the rotating shaft at the two ends of the male rotor and the transmission belt.
In addition, the present invention preferably has a frame 22 fixed outside the casing of the refrigerator, and the frame has two ends connected to several hoses 21, which are connected to the liquid draining pipe and the liquid inlet pipe and have heat conducting liquid heating and refrigerating source in the middle part. The heat conducting liquid heating and refrigerating source adopts mature products in the prior art, and has the functions of jointly forming the refrigerating and heating circulation of the heat conducting liquid with the flexible pipe, the heat conducting liquid circulating box and the inner cavities of the male rotor and the female rotor, so that the heat conducting liquid heating and refrigerating device is used for the axle center cooling function when the male rotor and the female rotor rotate at a high speed to generate heat and the axle center preheating function before the male rotor and the female rotor start when the lubricating liquid freezes and solidifies in a cold working condition.
To more clearly illustrate the embodiments of the present invention, an example is provided below:
the invention relates to a wide temperature range constant temperature rotor type double-screw refrigerating compressor, wherein a male rotor provides rotary power by a transmission belt in power connection with two ends of the male rotor when in operation, and then a female rotor is driven by the engagement of the male rotor to perform opposite rotary motion with the same angular velocity, in the process, normal pressure gas and lubricating oil are introduced into an inner cavity of a refrigerator shell through a gas inlet pipe and a gas inlet pipe, and after the temperature and the pressure of the male rotor and the female rotor are increased, the high pressure gas and the high temperature lubricating oil are mixed and discharged through a gas and oil discharge pipe, so that the same oil cooling circulation function of the outer wall of the rotor in the prior art is realized.
Different from the prior art, the wide temperature range constant temperature rotor type double-screw refrigeration compressor of the invention sequentially forms a cooling circulating liquid path positioned at the axis position of the rotor by the cavity, the liquid through holes at the two ends of the cavity, the heat conducting liquid circulating box and the liquid inlet pipe (liquid discharge pipe). In addition, the invention preferably selects the circulation direction of the heat conducting liquid in the cavity of the male rotor to be opposite to the circulation direction of the heat conducting liquid in the cavity of the female rotor (as shown in figure 2), and the cooling efficiency is improved by adopting a cross heat exchange mode, so that the dual cooling function of the heat conducting liquid circulation at the axis of the rotor matched with the oil cooling circulation at the outer wall of the rotor is realized.
It should be noted that, in order to guarantee the sealing effect and the service life of the thermal conduction liquid circulation box, the thermal conduction liquid circulation box is connected at the two axial ends of the refrigerator shell in an elastic sliding manner, so that an axial sliding buffering space (the distance between the axial end face of the compression sealing plate and the axial end face of the refrigerator shell can be adjusted by adjusting the elastic pre-tightening force of the damping spring, the adjusting function of the size of the buffering space and the size of the damping limit) exists between the thermal conduction liquid circulation box and the rotating shaft, and the damping spring is matched to absorb the vibration generated by the thermal conduction liquid circulation box and the refrigerator main body in the operation process, so that the service life of the thermal conduction liquid circulation box is prolonged and the vibration and noise reduction function of the refrigerator is realized.
Finally, the invention adopts mature products and mature technical means in the prior art.
It will be appreciated that modifications and variations are possible to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.
Claims (5)
1. Wide temperature range constant temperature rotor type double screw compressor, including the refrigerator casing, this refrigerator casing inside rotates the meshing and is connected with a plurality of rotors, its characterized in that: both axial ends of the shell of the refrigerator are elastically and slidably connected with a heat conducting liquid circulating box; the two ends of the rotor are coaxially and fixedly provided with rotating shafts, and the rotating shafts axially penetrate through and are circumferentially and rotatably connected to the shell of the refrigerator and the heat conducting liquid circulating box; communicated cavities are axially formed in the rotor and the rotating shaft, and a plurality of liquid through holes for communicating the cavities with the internal cavity of the heat conducting liquid circulating box are radially formed in the rotating shaft; the two ends of the shell of the refrigerator are axially and adjustably connected with a plurality of opposite-pulling screw rods, the middle sections of the opposite-pulling screw rods are in sliding fit and inserted with the heat conduction liquid circulation box, and the other ends of the opposite-pulling screw rods are adjustably connected with compression end sockets; damping springs are axially and slidably sleeved on the opposite-pulling screw rods at the two ends of the thermal liquid circulation box, wherein the damping spring at one end is supported on the axial end surfaces of the refrigerator shell and the thermal liquid circulation box in a jacking manner, and the damping spring at the other end is supported on the axial end surfaces of the thermal liquid circulation box and the pressing seal head in a jacking manner; the two ends of the opposite-pulling screw rod are in threaded connection with fastening nuts, the fastening nut at one end is supported on the refrigerator shell in a pressing and pressing manner, and the fastening nut at the other end is supported on the end face of the pressing seal head in a pressing and pressing manner; and rotating shafts at two ends of the rotor sequentially rotate in the circumferential direction and penetrate through the shell of the refrigerator in an axial sealing manner, the heat conducting liquid circulating box and the pressing end socket.
2. The wide temperature range constant temperature rotor type twin-screw refrigeration compressor according to claim 1, characterized in that: the inside of the heat conduction liquid circulation box is fixedly provided with a clapboard for separating the inner cavity of the heat conduction liquid circulation box in a sealing way, and the separated inner cavities of the plurality of heat conduction liquid circulation boxes are in one-to-one correspondence with the rotating shafts of the plurality of rotors.
3. The wide temperature range constant temperature rotor type twin-screw refrigeration compressor according to claim 1, characterized in that: and a shell of the heat conducting liquid circulating box is fixedly provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the inner cavity of the heat conducting liquid circulating box.
4. The wide temperature range constant temperature rotor type twin-screw refrigerating compressor according to claim 1, characterized in that: and one end of the shell of the refrigerator is fixedly provided with an air inlet pipe and an oil inlet pipe, and the other end of the shell of the refrigerator is fixedly provided with an oil gas discharge pipe.
5. The wide temperature range constant temperature rotor type twin-screw refrigeration compressor according to claim 1, characterized in that: the rotor comprises a male rotor and a female rotor, wherein rotating shafts at two ends of the male rotor penetrate through the pressing seal heads respectively and are in power connection with the transmission belt, and rotating shafts at two ends of the female rotor penetrate through the pressing seal heads respectively and are in axial limiting connection with end faces of the pressing seal heads.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210308527.5A CN114412785B (en) | 2022-03-28 | 2022-03-28 | Wide-temperature-range constant-temperature rotor type double-screw refrigeration compressor |
| DE102022107419.6A DE102022107419A1 (en) | 2022-03-28 | 2022-03-29 | Thermostatic twin-screw refrigeration and compression unit with a wide temperature range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210308527.5A CN114412785B (en) | 2022-03-28 | 2022-03-28 | Wide-temperature-range constant-temperature rotor type double-screw refrigeration compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114412785A CN114412785A (en) | 2022-04-29 |
| CN114412785B true CN114412785B (en) | 2022-07-15 |
Family
ID=81263377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210308527.5A Active CN114412785B (en) | 2022-03-28 | 2022-03-28 | Wide-temperature-range constant-temperature rotor type double-screw refrigeration compressor |
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| CN117780636B (en) * | 2024-02-26 | 2024-05-03 | 东营华来智能科技有限公司 | Proportional quantitative liquid feedback device applied to single-screw oil-gas mixed delivery pump |
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| JP2000314385A (en) * | 1999-05-06 | 2000-11-14 | Hitachi Ltd | Lubricating screw compressor |
| CN104204530A (en) * | 2012-02-28 | 2014-12-10 | 阿特拉斯·科普柯空气动力股份有限公司 | Screw compressor |
| CN204082557U (en) * | 2014-09-19 | 2015-01-07 | 浙江摩泰螺杆真空泵有限公司 | Vacuum pump screw rotor cooling system |
| KR20160033514A (en) * | 2014-09-18 | 2016-03-28 | 주식회사 동방플랜텍 | Screw rotor for screw-type vacuum pump |
| CN209261826U (en) * | 2017-06-21 | 2019-08-16 | 阿特拉斯·科普柯空气动力股份有限公司 | Inlet valve and compressor |
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| US2938664A (en) | 1955-01-17 | 1960-05-31 | Leybold S Nachfolger Fa E | Pump |
| FR2637655B1 (en) | 1988-10-07 | 1994-01-28 | Alcatel Cit | SCREW PUMP TYPE ROTARY MACHINE |
| DE19749572A1 (en) | 1997-11-10 | 1999-05-12 | Peter Dipl Ing Frieden | Vacuum pump or dry running screw compactor |
| CN103401353A (en) | 2013-07-27 | 2013-11-20 | 宁波德曼压缩机有限公司 | Oil-cooled screw air compressor coaxial with motor |
| CN106704176B (en) | 2016-12-02 | 2018-11-06 | 马德宝真空设备集团有限公司 | A kind of cooling system of lobe pump |
| CN208845356U (en) * | 2018-10-12 | 2019-05-10 | 南京长江江宇石化有限公司 | A kind of efficient screw vacuum pump of twin shaft |
| CN213176036U (en) * | 2020-06-03 | 2021-05-11 | 紫金恒基建材有限公司 | High efficiency double screw air compressor machine |
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- 2022-03-29 DE DE102022107419.6A patent/DE102022107419A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000314385A (en) * | 1999-05-06 | 2000-11-14 | Hitachi Ltd | Lubricating screw compressor |
| CN104204530A (en) * | 2012-02-28 | 2014-12-10 | 阿特拉斯·科普柯空气动力股份有限公司 | Screw compressor |
| KR20160033514A (en) * | 2014-09-18 | 2016-03-28 | 주식회사 동방플랜텍 | Screw rotor for screw-type vacuum pump |
| CN204082557U (en) * | 2014-09-19 | 2015-01-07 | 浙江摩泰螺杆真空泵有限公司 | Vacuum pump screw rotor cooling system |
| CN209261826U (en) * | 2017-06-21 | 2019-08-16 | 阿特拉斯·科普柯空气动力股份有限公司 | Inlet valve and compressor |
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| Publication number | Publication date |
|---|---|
| CN114412785A (en) | 2022-04-29 |
| DE102022107419A1 (en) | 2023-09-28 |
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Denomination of invention: Wide temperature range constant temperature rotor type twin screw refrigeration compressor Effective date of registration: 20230425 Granted publication date: 20220715 Pledgee: Tianjin Rural Commercial Bank Co.,Ltd. Dongli center sub branch Pledgor: TIANJIN GASIN-DH FRESH TECHNOLOGY CO.,LTD. Registration number: Y2023120000019 |