Oil-free water-cooling water chilling unit

Abstract

The utility model discloses an oil-free water-cooling water chilling unit, which belongs to the technical field of water chilling units and comprises an oil-free compressor and a fastening seat used for supporting the oil-free compressor, connecting pipes are mounted at two ends of the oil-free compressor, and a condenser and a vapor-liquid separator are mounted at the two ends of the oil-free compressor through the connecting pipes respectively. A high-voltage switch and a low-voltage switch are installed on connecting pipes at the two ends of the oil-free compressor respectively, a base is fixed to the bottom end of the oil-free compressor, a plurality of telescopic rods inserted into a fastening seat in a damping mode are fixed to the bottom end of the base, springs are arranged at the top ends of the telescopic rods in a sleeving mode, and rubber buffer seats are fixed to the bottom ends of the telescopic rods. According to the oil-free water-cooling water chilling unit, the influence of vibration generated by the oil-free compressor on unit equipment is reduced, and the situation that a spring is extruded and damaged due to the fact that the vibration amplitude is too large is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of chillers, and in particular relates to an oil-free water-cooled chiller. Background Art

[0002] The oil-free water-cooled chiller includes: refrigeration control system, shell and tube evaporator, oil-free compressor, air-cooled finned condenser, expansion valve, sight glass, gas-liquid separator and liquid receiver, etc.

[0003] The compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas. It is the heart of the refrigeration system. It draws in low-temperature, low-pressure refrigerant gas from the intake pipe, compresses it through the piston driven by the motor, and then discharges high-temperature, high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle.

[0004] The compressor cylinder requires the use of refrigeration oil, which increases the friction of the compressor. The compressor will also vibrate during use, causing the compressor unit to become loose and damaged due to the vibration. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an oil-free water-cooled chiller. The oil-free water-cooled chiller is intended to solve the technical problems in the existing technology that the compressor cylinder needs to use refrigeration oil, the refrigeration oil increases the friction of the compressor, and the compressor will vibrate during use, resulting in the compressor unit being easily loosened and damaged due to the influence of vibration.

[0006] In order to solve the above technical problems, the utility model provides an oil-free water-cooled chiller, which includes an oil-free compressor and a fastening base for supporting the oil-free compressor, connecting pipes are installed at both ends of the oil-free compressor, and a condenser and a vapor-liquid separator are respectively installed through the connecting pipes, and a high-pressure switch and a low-pressure switch are respectively installed on the connecting pipes at both ends of the oil-free compressor, wherein a base is fixed at the bottom end of the oil-free compressor, and a plurality of telescopic rods with damping plugged in the fastening base are fixed at the bottom end of the base, the top end of the telescopic rod is provided with a spring, and the bottom end of the telescopic rod is fixed with a rubber buffer seat.

[0007] Preferably, an evaporator is installed at the bottom end of the vapor-liquid separator through a connecting pipe, and a first filter is provided on the evaporator through the connecting pipe.

[0008] Furthermore, a second filter is installed on the top of the first filter through a connecting pipe, and a condenser fixed to the connecting pipe is provided on one side of the oil-free compressor.

[0009] Furthermore, a liquid storage tank is provided on the side wall of the condenser, and both ends of the liquid storage tank are fixed to the second filter and the condenser respectively through connecting pipes.

[0010] Furthermore, a sight glass and an expansion valve are respectively installed on the connecting pipe between the first filter and the second filter.

[0011] Furthermore, bolts are provided at both ends of the oil-free compressor, and the bottom ends of the bolts are threadedly inserted into the base.

[0012] Furthermore, a connecting portion is provided on the top end of the rubber buffer seat, and the connecting portion is threadedly sleeved on the bottom end of the telescopic rod.

[0013] Compared with the prior art, the beneficial effect of the present invention is that: by providing an oil-free compressor, the oil-free compressor does not require refrigeration oil in the compressor cylinder compared with the traditional compressor. The unique structural design of the compressor reduces friction points and can perform normal work without the lubrication of refrigeration oil. The refrigerant can also play a lubricating role to maintain the normal operation of the compressor. The use of an oil-free compressor can reduce the oil separator in the refrigeration system, making the pipeline of the refrigeration system simpler, reducing the welding points of the pipeline, and reducing the risk of leakage. At the same time, it also avoids the dilemma of oil return and eliminates various compressor failures caused by poor oil return. During the operation of the oil-free compressor, the discharged refrigerant is absolutely free of oil and gas, ensuring the purity of the refrigerant, and eliminating the refrigeration oil from forming an oil film inside the heat exchanger, which directly affects the effective heat exchange between the heat exchanger and the fluid, thereby reducing the heat transfer coefficient of the heat exchanger, ensuring efficient heat exchange between the evaporator and the condenser, and improving the overall operating performance of the oil-free water-cooled chiller. The oil-free water-cooled chiller will not generate oil mist and oil pollution during operation in the machine room, avoiding pollution to the environment, keeping the air in the machine room clean, and making the operating space more energy-saving and environmentally friendly.

[0014] The utility model is provided with a fastening seat at the bottom end of the oil-free compressor, and the base on the oil-free compressor is fixed with a telescopic rod with a damping inserted in the fastening seat. When the oil-free compressor is in use, the vibration generated by the oil-free compressor causes the base to squeeze the spring. After the spring is squeezed, the telescopic rod slides at a damping on the top end of the fastening seat, and the oil-free compressor is buffered by the spring, thereby reducing the impact of the vibration generated by the oil-free compressor on the unit equipment. When the vibration of the oil-free compressor is too large, the rubber buffer seat at the bottom end of the telescopic rod abuts against the bottom wall of the fastening seat and squeezes the rubber buffer seat to deform, thereby further buffering the vibration, thereby avoiding the situation where the spring is squeezed and damaged due to excessive vibration amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the environment in which the compressor of the present utility model is located;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the filter assembly in the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the oil-free compressor in the utility model;

[0020] Figure 5 It is a schematic cross-sectional structural diagram of the fastening seat in the present utility model.

[0021] The markings in the accompanying drawings are: 1. Oil-free compressor; 2. Fastening base; 3. Vapor-liquid separator; 4. Evaporator; 5. First filter; 6. Second filter; 7. Liquid storage tank; 8. Condenser; 9. Connecting pipe; 10. Sight glass; 11. Expansion valve; 12. Bolt; 13. High-pressure switch; 14. Telescopic rod; 15. Base; 16. Low-pressure switch; 17. Rubber buffer seat; 18. Spring; 19. Connecting part. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] This specific embodiment is an oil-free water-cooled chiller, and its structural diagram is as follows Figure 1 and Figure 2As shown, the oil-free water-cooled chiller includes an oil-free compressor 1 and a fastening base 2 for supporting the oil-free compressor 1. Connecting pipes 9 are installed at both ends of the oil-free compressor 1, and a condenser 8 and a vapor-liquid separator 3 are respectively installed through the connecting pipes 9. A high-pressure switch 13 and a low-pressure switch 16 are respectively installed on the connecting pipes 9 at both ends of the oil-free compressor 1. Compared with traditional compressors, the oil-free compressor 1 does not require refrigeration oil in the compressor cylinder. The unique structural design of the compressor reduces friction points and can perform normal work without the lubrication of refrigeration oil. The refrigerant can also play a lubricating role to maintain the normal operation of the compressor. The use of the oil-free compressor 1 can reduce the oil separator in the refrigeration system, making the pipeline of the refrigeration system simpler, reducing the welding points of the pipeline, reducing the risk of leakage, and also avoiding the dilemma of oil return, and putting an end to various compressor failures caused by poor oil return. During the operation of the oil-free compressor 1, the refrigerant discharged is absolutely free of oil and gas, ensuring the purity of the refrigerant, and preventing the refrigeration oil from forming an oil film inside the heat exchanger, which directly affects the effective heat exchange between the heat exchanger and the fluid, thereby reducing the heat transfer coefficient of the heat exchanger, ensuring efficient heat exchange between the evaporator 4 and the condenser 8, and improving the overall operating performance of the oil-free water-cooled chiller. The oil-free water-cooled chiller will not generate oil mist and oil pollution during operation in the machine room, avoiding pollution to the environment, keeping the air in the machine room clean, and making the operating space more energy-saving and environmentally friendly.

[0024] An evaporator 4 is installed at the bottom end of the vapor-liquid separator 3 through a connecting pipe 9, a first filter 5 is provided on the evaporator 4 through a connecting pipe 9, a second filter 6 is installed on the top of the first filter 5 through a connecting pipe 9, a condenser 8 fixed to the connecting pipe 9 is provided on one side of the oil-free compressor 1, a liquid storage tank 7 is provided on the side wall of the condenser 8, and both ends of the liquid storage tank 7 are respectively fixed to the second filter 6 and the condenser 8 through a connecting pipe 9, and a sight glass 10 and an expansion valve 11 are respectively installed on the connecting pipe 9 between the first filter 5 and the second filter 6.

[0025] like Figure 3 and Figure 4 As shown, a base 15 is fixed to the bottom end of the oil-free compressor 1, and a plurality of telescopic rods 14 with damping inserted in the fastening seat 2 are fixed to the bottom end of the base 15. A spring 18 is sleeved on the top end of the telescopic rod 14, and a rubber buffer seat 17 is fixed to the bottom end of the telescopic rod 14. Bolts 12 are provided at both ends of the oil-free compressor 1. The bottom end of the bolt 12 is threadedly inserted into the base 15. A connecting portion 19 is provided at the top end of the rubber buffer seat 17. The connecting portion 19 is threadedly sleeved on the bottom end of the telescopic rod 14. The spring 18 buffers the oil-free compressor 1, reducing the impact of the vibration of the oil-free compressor 1 on the unit equipment. When the oil-free compressor 1 vibrates too much, the rubber buffer seat 17 at the bottom end of the telescopic rod 14 abuts against the bottom wall of the fastening seat 2 and squeezes the rubber buffer seat 17 to deform, thereby avoiding the situation where the spring 18 is squeezed and damaged due to excessive vibration amplitude.

[0026] The structural diagram of the filter assembly of the oil-free water-cooled chiller is as follows: Figure 2 As shown, the structural diagram of the oil-free compressor 1 is as follows Figure 3 As shown, the cross-sectional structure diagram of the fastening seat 2 is as shown Figure 4 shown.

[0027] Working principle: When using the device of this technical solution, low-temperature and low-pressure refrigerant vapor is sucked into the oil-free compressor 1. After the mechanical action of the compressor, its volume is rapidly compressed, and then it becomes high-temperature and high-pressure refrigerant vapor. The high-temperature and high-pressure refrigerant vapor is directed to the condenser 8, where it undergoes heat exchange with the cooling water from the cooling water circulation system. After the condensation process, the high-pressure liquid refrigerant passes through the throttling device expansion valve 11 for throttling. During the throttling process, the pressure of the refrigerant drops sharply, causing its boiling point to drop accordingly. The low-pressure and low-temperature refrigerant gas-liquid mixture enters the evaporator 4, where it undergoes heat exchange with the chilled water from the chilled water circulation system. When the oil-free compressor 1 is in use, the spring 18 cushions the oil-free compressor 1, reducing the impact of the vibration generated by the oil-free compressor 1 on the unit equipment. When the oil-free compressor 1 vibrates too much, the rubber buffer seat 17 at the bottom end of the telescopic rod 14 abuts against the bottom wall of the fastening seat 2, and squeezes the rubber buffer seat 17 to deform, further cushioning the vibration, thereby avoiding the situation where the spring 18 is squeezed and damaged due to excessive vibration amplitude.

[0028] All technical features in this embodiment can be freely combined according to actual needs.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An oil-free water-cooled chiller, comprising an oil-free compressor (1) and a fastening base (2) for supporting the oil-free compressor (1), characterized in that: Both ends of the oil-free compressor (1) are equipped with connecting pipes (9), and a condenser (8) and a vapor-liquid separator (3) are respectively installed through the connecting pipes (9), and a high-pressure switch (13) and a low-pressure switch (16) are respectively installed on the connecting pipes (9) at both ends of the oil-free compressor (1), wherein a base (15) is fixed at the bottom end of the oil-free compressor (1), and a plurality of telescopic rods (14) are fixed at the bottom end of the base (15) and are inserted into the fastening seat (2) with damping, the top end of the telescopic rod (14) is provided with a spring (18), and the bottom end of the telescopic rod (14) is fixed with a rubber buffer seat (17).

2. The oil-free water-cooled chiller according to claim 1, characterized in that: An evaporator (4) is installed at the bottom end of the vapor-liquid separator (3) via a connecting pipe (9), and a first filter (5) is provided on the evaporator (4) via the connecting pipe (9).

3. The oil-free water-cooled chiller according to claim 2, characterized in that: A second filter (6) is installed on the top end of the first filter (5) via a connecting pipe (9), and a condenser (8) fixed to the connecting pipe (9) is provided on one side of the oil-free compressor (1).

4. The oil-free water-cooled chiller according to claim 3, characterized in that: A liquid storage tank (7) is provided on the side wall of the condenser (8), and both ends of the liquid storage tank (7) are respectively fixed to the second filter (6) and the condenser (8) through connecting pipes (9).

5. The oil-free water-cooled chiller according to claim 4, characterized in that: A sight glass (10) and an expansion valve (11) are respectively installed on the connecting pipe (9) between the first filter (5) and the second filter (6).

6. The oil-free water-cooled chiller according to claim 1, characterized in that: Bolts (12) are provided at both ends of the oil-free compressor (1), and the bottom ends of the bolts (12) are threadedly inserted into the base (15).

7. The oil-free water-cooled chiller according to claim 1, characterized in that: The top end of the rubber buffer seat (17) is provided with a connecting portion (19), and the connecting portion (19) is threadedly sleeved on the bottom end of the telescopic rod (14).

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