Self-cooling screw compressor

Abstract

The utility model belongs to the technical field of screw compressors, and discloses a self-cooling screw compressor which comprises a compressor body, a circulating cooling system is arranged on the outer surface of the compressor body, the input end of the circulating cooling system is connected with a refrigerating device, and the output end of the circulating cooling system is connected with a circulating water tank. The circulating water tank is arranged at the tail end of the refrigerating device, and the refrigerating device is covered with the heat dissipation device. The refrigeration device comprises two refrigeration cabins, the two refrigeration cabins are arranged in the installation cylinder from front to back in a spaced mode, and one end of the installation cylinder is connected with the tail portion of the compressor body in a fastened mode. Compared with a conventional water-cooling or air-cooling heat dissipation structure, the compressor achieves refrigeration through the semiconductor, the refrigeration effect is remarkable, normal long-time operation of equipment can be effectively guaranteed, the semiconductor technology is mature, the price is low, and great convenience is brought to operation and maintenance of the equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw compressors, and in particular relates to a self-cooling screw compressor. Background Art

[0002] Screw compressors are commonly used equipment in industry. When working, screw compressors need to continuously rotate and generate compressed gas. However, existing screw compressors are cooled by fans and do not have the function of high-efficiency cooling. The bearings will generate high temperatures when running for a long time, and the bearings are prone to damage or rust, resulting in the screw compressor being unable to operate for a long time. Utility Model Content

[0003] The utility model aims to provide a self-cooling screw compressor, aiming to solve the problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A self-cooling screw compressor comprises a compressor body, the outer surface of the compressor body is provided with a circulating cooling system, the input end of the circulating cooling system is connected to a refrigeration device, the output end of the circulating cooling system is connected to a circulating water tank, the circulating water tank is arranged at the tail end of the refrigeration device, and the outer cover of the refrigeration device is provided with a heat dissipation device;

[0006] The refrigeration device includes two refrigeration chambers, and the two refrigeration chambers are arranged inside the mounting tube at intervals from front to back. One end of the mounting tube is fastened to the tail of the compressor body, and the other end thereof is fastened to the front end of the circulating water tank. The refrigeration chamber includes a plurality of U-shaped or straight-line semiconductor refrigeration plates, a plurality of mounting plates and a heat exchange coil. The plurality of semiconductor refrigeration plates are arranged alternately and fixedly installed between the two mounting plates from top to bottom. The plurality of semiconductor refrigeration plates form a refrigeration corridor, and the refrigeration surface of the semiconductor refrigeration plate is arranged toward the inside of the refrigeration corridor. One end of the heat exchange coil is connected to the circulating water tank, and the other end thereof passes through the two refrigeration corridors in sequence to connect to the circulating cooling system.

[0007] In a preferred embodiment of the utility model, the circulating cooling system includes a return water pipeline, a front end coil, a rear end coil and a water inlet pipe, the front end coil and the rear end coil are both spiral-shaped, and the front end coil and the rear end coil are respectively arranged close to the outer surface of the compressor body, the front end coil and the rear end coil are connected through a connecting pipe, the output end of the front end coil is connected to one end of the return water pipeline, and the other end of the return water pipeline is connected to the circulating water tank, the input end of the rear end coil is connected to the output end of the heat exchange coil through the water inlet pipe, the input end of the heat exchange coil is connected to the output end of the water pump, and the input end of the water pump is connected to the circulating water tank.

[0008] In a preferred embodiment of the utility model, a heating zone is formed between the heating surface of the semiconductor refrigeration plate and the mounting plate and the inner wall of the mounting tube, and a plurality of heat dissipation strip holes are evenly provided on the surface of the mounting plate and corresponding to each of the heating zones.

[0009] In a preferred embodiment of the present utility model, a plurality of heat dissipation strip holes are evenly provided on the surface of the mounting tube and corresponding to the mounting gaps of the two groups of refrigeration chambers.

[0010] In a preferred embodiment of the utility model, the heat dissipation device includes an upper air duct cover and a lower air duct cover, and the upper air duct cover and the lower air duct cover are respectively installed on the upper and lower parts of the mounting tube and completely cover the outside thereof, an air inlet is provided at the top center of the upper air duct cover, a cooling fan is fixedly installed at the top of the air inlet, and an air outlet is provided at the bottom center of the lower air duct cover.

[0011] In a preferred embodiment of the present utility model, a detachable impurity filtering structure is provided between the input end of the heat exchange coil and the output end of the water pump.

[0012] In a preferred embodiment of the present utility model, a thermal insulation layer is applied on the surface of the upper air guide cover and the lower air guide cover.

[0013] In a preferred embodiment of the present invention, the cross-sections of the front-end coil and the rear-end coil are both rectangular, and the surfaces of the coils are both provided with a heat-insulating layer.

[0014] In a preferred embodiment of the present invention, a front cover and a rear cover are provided outside the circulating cooling system, and the front cover and the rear cover are fixedly mounted on the front and rear parts of the compressor body respectively.

[0015] The beneficial effects of the utility model are:

[0016] The utility model uses natural water as a heat-conducting medium and a semiconductor refrigeration plate as a cold source to cool the compressor body. Compared with conventional water-cooling or air-cooling heat dissipation structures, this compressor uses semiconductor refrigeration, and has a significant refrigeration effect, which can effectively ensure the normal and long-term operation of the equipment. The semiconductor technology is mature and low-priced, which brings great convenience to equipment operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional exploded structure of the utility model;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of a refrigeration device;

[0020] Figure 4 It is a schematic diagram of the planar cross-sectional structure of the refrigeration device.

[0021] Figure numerals; wherein, 100, compressor body; 200, front cover; 300, rear cover; 400, heat dissipation device; 401, cooling fan; 402, air inlet; 403, upper air guide cover; 404, lower air guide cover; 405, air outlet; 500, circulating water tank; 600, circulating cooling system; 601, return water pipeline; 602, front end coil; 603, connecting pipe; 604, rear end coil; 605, water inlet pipe; 700, refrigeration device; 701, installation cylinder; 702, refrigeration cabin; 70201, heat exchange coil; 70202, semiconductor refrigeration plate; 70203, installation plate; 70204, heating zone; 70205, water pump. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0023] Example:

[0024] like Figure 1-4As shown, this embodiment provides a self-cooling screw compressor, including a compressor body 100, the outer surface of the compressor body 100 is provided with a circulating cooling system 600, the input end of the circulating cooling system 600 is connected to a refrigeration device 700, the output end of the circulating cooling system 600 is connected to a circulating water tank 500, the circulating water tank 500 is arranged at the tail end of the refrigeration device 700, and the outer cover of the refrigeration device 700 is provided with a heat dissipation device 400;

[0025] The refrigeration device 700 includes two refrigeration chambers 702, which are arranged inside the mounting tube 701 at intervals from front to back. One end of the mounting tube 701 is fastened to the tail of the compressor body 100, and the other end is fastened to the front end of the circulating water tank 500. The refrigeration chamber 702 includes a plurality of U-shaped or straight-line semiconductor refrigeration plates 70202, a plurality of mounting plates 70203 and a heat exchange coil 70201. The plurality of semiconductor refrigeration plates 70202 are arranged alternately and fixedly installed between the two mounting plates 70203 from top to bottom. The plurality of semiconductor refrigeration plates 70202 form a refrigeration corridor, and the refrigeration surface of the semiconductor refrigeration plate 70202 is arranged toward the inside of the refrigeration corridor. One end of the heat exchange coil 70201 is connected to the circulating water tank 500, and the other end thereof passes through the two refrigeration corridors in sequence to connect to the circulating cooling system 600.

[0026] In a preferred embodiment of the utility model, further, the circulating cooling system 600 includes a return water pipeline 601, a front end coil 602, a rear end coil 604 and a water inlet pipe 605, the front end coil 602 and the rear end coil 604 are both spiral, the front end coil 602 and the rear end coil 604 are respectively arranged close to the outer surface of the compressor body 100, the front end coil 602 and the rear end coil 604 are connected through a connecting pipe 603, the output end of the front end coil 602 is connected to one end of the return water pipeline 601, and the other end of the return water pipeline 601 is connected to the circulating water tank 500, the input end of the rear end coil 604 is connected to the output end of the heat exchange coil 70201 through the water inlet pipe 605, and the input end of the heat exchange coil 70201 is connected to the output end of the water pump 70205.

[0027] Specifically, Figure 1-2As shown, the compressor will overheat after running for a period of time. In order to reduce the heat generated by the equipment, the compressor uses natural water as a heat transfer medium and a semiconductor refrigeration plate 70202 as a cold source to cool the compressor body 100. The input end of the water pump 70205 is connected to the circulating water tank 500. The water pump 70205 pumps the natural water in the circulating water tank 500 into the heat exchange coil 70201. The natural water flows along the heat exchange coil 70201. At the same time, the semiconductor refrigeration plates 70202 in the refrigeration corridor cool the tube wall of the heat exchange coil 70201, thereby achieving the cooling of the natural water. After cooling, , natural water enters the circulating cooling system 600, and conducts heat through the front coil 602 and the rear coil 604 close to the surface of the compressor body 100, thereby exchanging heat with the natural water, and the temperature of the compressor body 100 is taken away by the heating of the natural water. After the natural water is heated, it returns to the inside of the circulating water tank 500 through the return pipe 601 for standby use. In this way, the mixed cycle can achieve the purpose of cooling the compressor body 100. Compared with the conventional water-cooling or air-cooling heat dissipation structure, this compressor uses semiconductor refrigeration, and the refrigeration effect is significant, which can effectively ensure the normal and long-term operation of the equipment. The semiconductor technology is mature and low-priced, which brings great convenience to equipment operation and maintenance;

[0028] In addition, in order to realize automatic management of the equipment, a temperature sensor can be set on the surface of the compressor body 100, and a PLC controller can be used in conjunction to realize the automatic cooling function of the compressor. The temperature is preset by the temperature sensor. When the temperature exceeds the set value, the circulating cooling system 600 and the refrigeration device 700 are controlled by the PLC controller to start running, thereby realizing the circulating cooling operation of the compression body. When the temperature of the compressor body 100 returns to the preset value of the temperature sensor, the PLC controller can be used to control each device to stop running and thus stop the cooling operation. In this way, automatic control can be realized, personnel on duty can be reduced, energy waste can be eliminated, and damage to the compressor due to excessive temperature can be effectively prevented.

[0029] In a preferred embodiment of the utility model, further, a heating area 70204 is formed between the heating surface of the semiconductor refrigeration plate 70202 and the mounting plate 70203 and the inner wall of the mounting tube 701, and a plurality of heat dissipation strip holes are evenly provided on the surface of the mounting plate 70203 and corresponding to each heating area 70204.

[0030] In a preferred embodiment of the present invention, further, a plurality of heat dissipation strip holes are evenly provided on the surface of the mounting tube 701 and at the mounting gaps corresponding to the two groups of refrigeration chambers 702 .

[0031] In a preferred embodiment of the utility model, further, the heat dissipation device 400 includes an upper air guide cover 403 and a lower air guide cover 404, which are respectively installed on the upper and lower parts of the mounting tube 701 and completely cover the outside thereof, an air inlet 402 is arranged at the top center of the upper air guide cover 403, a cooling fan 401 is fixedly installed at the top of the air inlet 402, and an air outlet 405 is arranged at the bottom center of the lower air guide cover 404.

[0032] Specifically, Figure 3-4 As shown, due to the characteristic of the semiconductor refrigeration plate 70202 that one side cools and the other side heats, a heat dissipation device 400 needs to be set in turn to dissipate heat from the refrigeration chamber 702, by opening long strip heat dissipation holes at the positions corresponding to the heat sources on the surfaces of the mounting tube 701 and the mounting plate 70203, and by setting a heat dissipation fan 401 at the air inlet 402 on the top of the upper air guide cover 403, so that ambient wind is blown into the interior of the mounting tube 701, taking away the heat generated by the semiconductor refrigeration plate 70202, and dissipating it from the bottom of the mounting tube 701. At the same time, in order to prevent the dissipated heat from causing harm to the surrounding people, a lower air guide cover 404 is set to discharge the exhausted hot air to the ground through the air outlet 405 in the center of the top of the lower air guide cover 404, thereby improving the safety of the equipment during use.

[0033] In a preferred embodiment of the utility model, further, a detachable impurity filtering structure is provided between the input end of the heat exchange coil 70201 and the output end of the water pump 70205 to prevent impurities in the circulating water from corroding the equipment, thereby effectively extending the service life of the equipment.

[0034] In a preferred embodiment of the present invention, further, the surfaces of the upper air guide cover 403 and the lower air guide cover 404 are both provided with a thermal insulation layer.

[0035] In a preferred embodiment of the present invention, further, the cross-sections of the front coil 602 and the rear coil 604 are both rectangular, and the surfaces of the coils are both provided with a heat-insulating layer.

[0036] By setting up thermal insulation and heat-isolating layers, it can ensure that low temperatures will not dissipate quickly, and can prevent high temperatures on the outside of the equipment from scalding people around it. This ensures that the equipment not only dissipates heat efficiently, but also has outstanding safety performance.

[0037] In a preferred embodiment of the present invention, further, a front cover 200 and a rear cover 300 are provided outside the circulating cooling system 600, and the front cover 200 and the rear cover 300 are fixedly mounted on the front and rear parts of the compressor body 100 respectively.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-cooling screw compressor, comprising a compressor body (100), characterized in that: A circulating cooling system (600) is provided on the outer surface of the compressor body (100); an input end of the circulating cooling system (600) is connected to a refrigeration device (700); an output end of the circulating cooling system (600) is connected to a circulating water tank (500); the circulating water tank (500) is provided at the rear end of the refrigeration device (700); and a heat dissipation device (400) is provided on an outer cover of the refrigeration device (700); The refrigeration device (700) comprises two refrigeration chambers (702), the two refrigeration chambers (702) being arranged at intervals from front to back inside a mounting tube (701), one end of the mounting tube (701) being fastened to the rear of a compressor body (100), and the other end of the mounting tube (701) being fastened to the front of the circulating water tank (500), the refrigeration chamber (702) comprising a plurality of U-shaped or straight-line semiconductor refrigeration plates (70202), a plurality of mounting plates (70203) and a heat exchange coil (7020 1), a plurality of the semiconductor refrigeration plates (70202) are staggered and fixedly installed between two mounting plates (70203) from top to bottom, the plurality of the semiconductor refrigeration plates (70202) form a refrigeration corridor, the refrigeration surface of the semiconductor refrigeration plate (70202) is arranged toward the inside of the refrigeration corridor, one end of the heat exchange coil (70201) is connected to the circulating water tank (500), and the other end thereof passes through the two refrigeration corridors in sequence to connect to the circulating cooling system (600).

2. A self-cooling screw compressor according to claim 1, characterized in that: The circulating cooling system (600) comprises a return water pipeline (601), a front-end coil (602), a rear-end coil (604) and a water inlet pipe (605), wherein the front-end coil (602) and the rear-end coil (604) are both spiral-shaped, and the front-end coil (602) and the rear-end coil (604) are respectively arranged in close contact with the outer surface of the compressor body (100), and the front-end coil (602) and the rear-end coil (604) are connected via a connecting pipe (603). The output end of the tube (602) is connected to one end of the return water pipeline (601), and the other end of the return water pipeline (601) is connected to the circulating water tank (500). The input end of the rear coil (604) is connected to the output end of the heat exchange coil (70201) through the water inlet pipe (605), and the input end of the heat exchange coil (70201) is connected to the output end of the water pump (70205), and the input end of the water pump (70205) is connected to the circulating water tank (500).

3. A self-cooling screw compressor according to claim 2, characterized in that: A heating area (70204) is formed between the heating surface of the semiconductor refrigeration plate (70202), the mounting plate (70203) and the inner wall of the mounting tube (701), and a plurality of heat dissipation strip holes are evenly provided on the surface of the mounting plate (70203) and corresponding to each of the heating areas (70204).

4. A self-cooling screw compressor according to claim 3, characterized in that: A plurality of heat dissipation strip holes are also evenly provided on the surface of the installation cylinder (701) and at the installation gaps corresponding to the two groups of refrigeration chambers (702).

5. A self-cooling screw compressor according to claim 4, characterized in that: The heat dissipation device (400) comprises an upper air guide cover (403) and a lower air guide cover (404), wherein the upper air guide cover (403) and the lower air guide cover (404) are respectively mounted on the upper and lower parts of the mounting tube (701) and completely cover the outside thereof, an air inlet (402) is arranged at the top center of the upper air guide cover (403), a heat dissipation fan (401) is fixedly mounted at the top of the air inlet (402), and an air outlet (405) is arranged at the bottom center of the lower air guide cover (404).

6. A self-cooling screw compressor according to claim 2, characterized in that: A detachable impurity filtering structure is provided between the input end of the heat exchange coil (70201) and the output end of the water pump (70205).

7. A self-cooling screw compressor according to claim 5, characterized in that: The surfaces of the upper air guide cover (403) and the lower air guide cover (404) are both provided with a thermal insulation layer.

8. A self-cooling screw compressor according to claim 2, characterized in that: The cross-sections of the front coil (602) and the rear coil (604) are both rectangular, and the surfaces of both are provided with a thermal insulation layer.

9. A self-cooling screw compressor according to claim 1, characterized in that: A front cover (200) and a rear cover (300) are provided outside the circulating cooling system (600), and the front cover (200) and the rear cover (300) are respectively fixedly mounted on the front and rear parts of the compressor body (100).

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