Supercharging device for two-stage compression centrifugal cooling-water machine
By introducing bevel gear transmission, cooling fan, spiral cooling pipe and pressure relief mechanism into the two-stage compression centrifugal chiller, the problems of pressure boosting device loss and heat dissipation are solved, and the stability and efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202422870844.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The booster devices of existing two-stage compression centrifugal chillers suffer from wear and heat dissipation problems during long-term use, affecting the stability and efficiency of the equipment.
A pressure boosting device was designed, comprising a motor, a bevel gear transmission system, a cooling fan, a spiral cooling pipe, and a pressure relief mechanism. The bevel gear transmission improves the rotational stability of the impeller, the cooling fan and spiral cooling pipe are used for heat dissipation, the pressure relief cylinder is used for air pressure regulation, and slip rings and balls reduce friction.
It improves the stability and heat dissipation of the centrifugal compressor, expands the operating range, reduces frictional loss, and ensures stable operation of the equipment for a long time.
Smart Images
Figure CN223512300U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to centrifugal cold water machine technical field especially relates to a kind of supercharging device for two-stage compression centrifugal cold water machine. BACKGROUND
[0002] Two-stage compression centrifugal cold water machine is a kind of high-efficiency refrigeration equipment, widely used in large air conditioning system, industrial cooling and other refrigeration applications, compared with single-stage compressor, two-stage compression can work under low temperature and high pressure conditions, suitable for processing lower evaporation temperature, improve refrigeration efficiency.
[0003] In prior art, centrifugal compressor is needed to be used for compression treatment in the use process of two-stage compression centrifugal cold water machine, to ensure the stable use of cold water machine, and supercharging device can be worn out after long time use, and the motor in supercharging device can be affected by heat dissipation after long time use due to closed setting for improving protection effect. Therefore, the utility model designs a kind of supercharging device for two-stage compression centrifugal cold water machine. UTILITY MODEL CONTENT
[0004] The utility model aims at solving the problem of the prior art in the use process of two-stage compression centrifugal cold water machine, centrifugal compressor is needed to be used for compression treatment, to ensure the stable use of cold water machine, and supercharging device can be worn out after long time use, and the motor in supercharging device can be affected by heat dissipation after long time use due to closed setting for improving protection effect, and proposes a kind of supercharging device for two-stage compression centrifugal cold water machine.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A kind of supercharging device for two-stage compression centrifugal cold water machine, including cooling machine body, controller, connecting pipe, centrifugal compressor and impeller, the controller, connecting pipe and centrifugal compressor are fixedly connected on the upper surface of cooling machine body respectively, the centrifugal compressor and connecting pipe are fixedly connected, the impeller is fixedly connected in the inside of centrifugal compressor, the centrifugal compressor is fixedly connected with shell on the side wall outside impeller, the shell is sleeved on the outside of impeller, the inner wall of the shell is fixedly connected with partition, the inner wall of the partition is rotatably connected with shaft, the first gear is fixedly sleeved on the shaft wall of the shaft, the end of the shaft is fixedly connected with impeller, the inner wall of the shell is fixedly connected with fixed plate, the upper surface of the fixed plate is fixedly connected with motor, the bottom end inner wall of the partition is rotatably connected with rotating rod, the second gear is fixedly sleeved on the rod wall of the rotating rod, the first gear and the second gear are meshingly arranged, the rod wall of the rotating rod and motor is fixedly sleeved with bevel gear respectively, two the bevel gears are meshingly arranged.
[0007] Preferably, the inner wall of the shell and the fixing plate is respectively provided with a cavity, the two cavities are communicated, the inner wall of the cavity of the shell is fixedly connected with a cooling fan, and the top end of the inner wall of the fixing plate is provided with a plurality of air outlets.
[0008] Preferably, the top end of the fixing plate is fixedly connected with a cylinder, the inner wall of the cylinder is provided with a spiral cooling pipe, and the spiral cooling pipe is arranged on the outer side of the motor.
[0009] Preferably, the top end of the shell is fixedly connected with a pressure relief cylinder, the top end of the inner wall of the pressure relief cylinder is fixedly connected with a spring, the bottom of the spring is fixedly connected with a piston, the piston is slidingly arranged on the inner wall of the pressure relief cylinder, and a pressure relief hole is formed in the cylinder wall of the pressure relief cylinder.
[0010] Preferably, the side wall of the impeller is fixedly connected with a sliding ring, the inner wall of the shell is provided with an annular sliding groove, the sliding ring is slidingly arranged on the inner wall of the annular sliding groove, the inner wall of the sliding ring is rollingly provided with a plurality of rolling balls, and the rolling balls are rollingly arranged on the inner wall of the annular sliding groove.
[0011] Preferably, the bottom end of the inner wall of the shell is fixedly connected with a support frame, and the support frame is fixedly connected to the bottom of the fixing plate.
[0012] Compared with the prior art, the utility model provides a kind of pressure increasing device for double-stage compression centrifugal cold water machine, with following beneficial effects:
[0013] 1, the pressure increasing device for double-stage compression centrifugal cold water machine, the output shaft rotation of motor can drive bevel gear rotation, two bevel gears are meshed transmission and can drive rotating rod rotation, rotating rod rotation drives second gear rotation, second gear rotation can drive first gear rotation, first gear rotation can drive rotating shaft and impeller rotation, impeller is arranged as double-stage impeller can make pressure ratio higher, and range is more wide, can reduce compressor rotating speed, improve the stability of centrifugal compressor use.
[0014] 2, the pressure increasing device for double-stage compression centrifugal cold water machine, gas can be sent to the inside of cavity by cooling fan, gas is sent to the inner wall of cylinder by cavity and air outlet, can carry out heat dissipation treatment to motor, and spiral cooling pipe is arranged on the outer side of motor, can further improve the cooling effect of motor.
[0015] 3, the pressure increasing device for double-stage compression centrifugal cold water machine, when the air pressure of the shell located on the inner side of baffle is too high, pressure relief treatment can be carried out, when air pressure increases, piston can push spring compression, so that piston can slide along the inner wall of pressure relief cylinder, after sliding to the top of pressure relief hole, gas is discharged from pressure relief hole and can be depressurized.
[0016] 4. The booster device for the two-stage compression centrifugal water chiller, the sliding ring slides along the inner wall of the annular sliding groove, the stability of the impeller rotation is improved, and the ball rolls along the inner wall of the annular sliding groove, the friction of the sliding ring on the inner wall of the annular sliding groove is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 A structure diagram of the booster device for the two-stage compression centrifugal water chiller is provided in the utility model.
[0018] Figure 2 For Figure 1 A structure enlarged schematic view of the local part A.
[0019] Figure 3 For Figure 1 A structure enlarged schematic view of the local part B.
[0020] Figure 4 For Figure 3 A structure enlarged schematic view of the local part C.
[0021] In the figure: 1, the cooling machine body, 2, the controller, 3, the connecting pipe, 4, the centrifugal compressor, 5, the shell, 6, the impeller, 7, the partition, 8, the rotating shaft, 9, the first gear, 10, the fixed plate, 11, the rotating rod, 12, the second gear, 13, the motor, 14, the bevel gear, 15, the cooling fan, 16, the cylinder, 17, the pressure relief cylinder, 18, the spring, 19, the piston, 20, the sliding ring, 21, the ball, 22, the spiral cooling pipe, 23, the support frame. DETAILED DESCRIPTION
[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0023] Embodiment one
[0024] Referring to Figures 1-4A kind of pressure increasing device for two-stage compression centrifugal cold water machine, including cooling machine body 1, controller 2, connecting pipe 3, centrifugal compressor 4 and impeller 6, controller 2, connecting pipe 3 and centrifugal compressor 4 are fixedly connected on the upper surface of cooling machine body 1 respectively, centrifugal compressor 4 and connecting pipe 3 are fixedly connected, impeller 6 is fixedly connected in the inside of centrifugal compressor 4, shell 5 is fixedly connected on the side wall outside impeller 6 of centrifugal compressor 4, shell 5 is sleeved on the outside of impeller 6, the inner wall of shell 5 is fixedly connected with partition 7, the inner wall of partition 7 is rotatably connected with shaft 8, the first gear 9 is fixedly sleeved on the shaft wall of shaft 8, the end of shaft 8 is fixedly connected with impeller 6, the inner wall of shell 5 is fixedly connected with fixed plate 10, the upper surface of fixed plate 10 is fixedly connected with motor 13, the bottom end inner wall of partition 7 is rotatably connected with rotating rod 11, the second gear 12 is fixedly sleeved on the rod wall of rotating rod 11, the first gear 9 and the second gear 12 are meshingly arranged, the rod wall of rotating rod 11 and motor 13 is fixedly sleeved with bevel gear 14 respectively, and the two bevel gears 14 are meshingly arranged.
[0025] The inner wall of shell 5 and fixed plate 10 is respectively provided with a cavity, and the two cavities are communicatively arranged, the inner wall of shell 5 is fixedly connected with a heat dissipation fan 15, a plurality of air outlets are formed in the top inner wall of fixed plate 10 located in the cavity, a cylinder 16 is fixedly connected to the top of fixed plate 10, the inner wall of cylinder 16 is provided with a spiral cooling pipe 22, and the spiral cooling pipe 22 is arranged around the outside of motor 13.
[0026] In use, the output shaft of motor 13 rotates to drive the bevel gear 14 to rotate, the two bevel gears 14 meshingly drive the rotating rod 11 to rotate, the rotating rod 11 drives the second gear 12 to rotate, the second gear 12 drives the first gear 9 to rotate, and the first gear 9 drives the shaft 8 and the impeller 6 to rotate, the impeller 6 is arranged as a two-stage impeller to make the pressure ratio higher and the operating range wider, and the compressor speed can be reduced to improve the stability of the centrifugal compressor.
[0027] The heat dissipation fan 15 can blow gas into the cavity, the gas passes through the cavity and the air outlets to blow against the inner wall of the cylinder 16 to cool the motor 13, and the spiral cooling pipe 22 is arranged around the outside of the motor 13 to further improve the cooling effect of the motor 13.
[0028] Embodiment two
[0029] Refer to Figures 1-4 The top of shell 5 is fixedly connected with a pressure relief cylinder 17, the top inner wall of pressure relief cylinder 17 is fixedly connected with a spring 18, the bottom of spring 18 is fixedly connected with a piston 19, the piston 19 is slidingly arranged in the inner wall of pressure relief cylinder 17, and a pressure relief hole is formed in the cylinder wall of pressure relief cylinder 17.
[0030] The side wall of the impeller 6 is fixedly connected with a sliding ring 20, the inner wall of the shell 5 is provided with an annular sliding groove, the sliding ring 20 is slidingly arranged on the inner wall of the annular sliding groove, the inner wall of the sliding ring 20 is rollingly provided with a plurality of rolling balls 21, the rolling balls 21 are rollingly arranged on the inner wall of the annular sliding groove, and the bottom end inner wall of the shell 5 is fixedly connected with a supporting frame 23, which is fixedly connected to the bottom of the fixed plate 10.
[0031] The pressure relief cylinder 17 can perform pressure relief when the shell 5 is located on the inner side of the partition plate 7, the piston 19 can push the spring 18 to compress when the air pressure increases, the piston 19 can slide along the inner wall of the pressure relief cylinder 17, and the gas is discharged from the pressure relief hole to perform pressure reduction when the piston 19 slides to the upper side of the pressure relief hole.
[0032] The sliding ring 20 slides along the inner wall of the annular sliding groove, the stability of the rotation of the impeller 6 can be improved, and the rolling balls 21 roll along the inner wall of the annular sliding groove, the friction of the sliding ring 20 on the inner wall of the annular sliding groove can be reduced.
[0033] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A booster device for a two-stage compression centrifugal chiller, comprising a cooling body (1), a controller (2), a connecting pipe (3), a centrifugal compressor (4), and an impeller (6), characterized in that: The controller (2), connecting pipe (3), and centrifugal compressor (4) are respectively fixedly connected to the upper surface of the cooling body (1). The centrifugal compressor (4) and connecting pipe (3) are fixedly connected. The impeller (6) is fixedly connected inside the centrifugal compressor (4). A housing (5) is fixedly connected to the side wall of the centrifugal compressor (4) outside the impeller (6). The housing (5) is sleeved on the outside of the impeller (6). A partition (7) is fixedly connected to the inner wall of the housing (5). A rotating shaft (8) is rotatably connected to the inner wall of the partition (7). A first... The gear (9) is fixedly connected to the end of the rotating shaft (8) and the impeller (6). The inner wall of the housing (5) is fixedly connected to the fixing plate (10). The upper surface of the fixing plate (10) is fixedly connected to the motor (13). The bottom inner wall of the partition (7) is rotatably connected to the rotating rod (11). The second gear (12) is fixedly sleeved on the rod wall of the rotating rod (11). The first gear (9) and the second gear (12) are meshed with each other. The rotating rod (11) and the motor (13) are respectively fixedly sleeved with bevel gears (14). The two bevel gears (14) are meshed with each other.
2. The booster device for a two-stage compression centrifugal chiller according to claim 1, characterized in that: The inner walls of the housing (5) and the fixing plate (10) are respectively provided with cavities, and the two cavities are connected. The housing (5) is fixedly connected to the inner wall of the cavity with a cooling fan (15), and the fixing plate (10) is provided with multiple air outlets on the inner wall at the top of the cavity.
3. A booster device for a two-stage compression centrifugal chiller according to claim 1, characterized in that: The top of the fixed plate (10) is fixedly connected to a cylinder (16), and the inner wall of the cylinder (16) is provided with a spiral cooling pipe (22), which is arranged around the outside of the motor (13).
4. A booster device for a two-stage compression centrifugal chiller according to claim 1, characterized in that: A pressure relief cylinder (17) is fixedly connected to the top of the housing (5). A spring (18) is fixedly connected to the inner wall of the top of the pressure relief cylinder (17). A piston (19) is fixedly connected to the bottom of the spring (18). The piston (19) is slidably disposed on the inner wall of the pressure relief cylinder (17). A pressure relief hole is provided on the cylinder wall of the pressure relief cylinder (17).
5. A booster device for a two-stage compression centrifugal chiller according to claim 1, characterized in that: A slip ring (20) is fixedly connected to the side wall of the impeller (6). An annular groove is provided on the inner wall of the housing (5). The slip ring (20) is slidably disposed on the inner wall of the annular groove. Multiple balls (21) are rolled on the inner wall of the slip ring (20). The balls (21) are rolled on the inner wall of the annular groove.
6. A booster device for a two-stage compression centrifugal chiller according to claim 1, characterized in that: A support frame (23) is fixedly connected to the inner wall of the bottom end of the housing (5), and the support frame (23) is fixedly connected to the bottom of the fixing plate (10).