Water chilling unit circulating system

Abstract

The utility model discloses a water chilling unit circulating system which comprises a heat preservation water tank, at least one refrigerating unit, a water using pipeline and a circulating pipeline. A water inlet pipeline and a water return pipeline are connected between the refrigerating unit and the heat preservation water tank, an inner circulation water pump is installed on the water return pipeline, the water using pipeline is communicated between the heat preservation water tank and a user side, and an outer circulation variable frequency water pump is installed on the water using pipeline. And the circulating pipeline is communicated between a user side and the heat preservation water tank. All the components are connected through pipelines and can be detachably and separately packaged, the problems of transportation space, outlet size limitation and the like are effectively solved, and when being transported to a user site, all the components only need to be connected through the pipelines and connected with a power source, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of water chillers, in particular to a circulation system of a water chiller. Background Art

[0002] Chillers are widely used in chemical, pharmaceutical, industrial processing equipment, food processing or other industrial sites that require cooling. However, existing chillers are generally large in size, which leads to problems such as transportation space and export size restrictions. Summary of the invention

[0003] In view of the above problems of the existing chiller circulation units, the present invention aims to provide a chiller circulation system with high stability and solving the problems of transportation space and outlet size limitation.

[0004] The specific technical solutions are as follows:

[0005] A chiller circulation system, comprising:

[0006] Insulated water tank;

[0007] At least one refrigeration unit; a water inlet pipeline and a water return pipeline are connected between the refrigeration unit and the thermal insulation water tank, and an internal circulation water pump is installed on the water return pipeline;

[0008] A water pipeline, the water pipeline is connected between the thermal insulation water tank and the user end, and an external circulation variable frequency water pump is installed on the water pipeline;

[0009] A circulation pipeline is connected between the user end and the thermal insulation water tank.

[0010] As a further improvement and optimization of this solution, the water inlet pipeline and the water use pipeline are both connected to the top side wall of the insulated water tank, and the return pipeline and the circulation pipeline are both connected to the bottom side wall of the insulated water tank.

[0011] As a further improvement and optimization of this solution, the refrigeration unit includes an evaporator and at least one refrigeration component, the water inlet pipeline and the water return pipeline are both connected to the evaporator, and the refrigeration component includes:

[0012] A compressor, wherein the compressor is connected to the evaporator via a first pipeline;

[0013] At least one condenser, wherein the condenser is connected to the compressor via a second pipeline and is connected to the evaporator via a third pipeline.

[0014] As a further improvement and optimization of this solution, an expansion valve is installed on the third pipeline.

[0015] As a further improvement and optimization of the present solution, a drying filter is also installed on the third pipeline, and the drying filter is arranged between the expansion valve and the condenser.

[0016] As a further improvement and optimization of this solution, the expansion valve is an electronic expansion valve.

[0017] As a further improvement and optimization of this solution, the compressor is a scroll compressor.

[0018] As a further improvement and optimization of the present solution, an intermediate pipeline is connected between the water inlet pipeline and the water return pipeline, and a valve is provided on the intermediate pipeline for opening and closing the intermediate pipeline.

[0019] Compared with the prior art, the above technical solution has the following positive effects:

[0020] (1) The various components of the utility model are connected by pipelines and can be disassembled and packaged separately, which effectively solves the problems of transportation space and export size restrictions. When transported to the user's site, it only needs to connect the various components through pipelines and connect the power supply to operate, which is convenient and fast.

[0021] (2) The utility model adopts components such as a vortex compressor and an electronic expansion valve to improve the stability and reliability of the unit performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a chiller circulation system of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a refrigeration unit in a chiller circulation system of the utility model;

[0024] In the attached figure: 1. Insulated water tank; 2. Refrigeration unit; 3. Internal circulation water pump; 4. External circulation variable frequency water pump; 5. Water outlet pipeline; 6. Return pipeline; 7. Water pipeline; 8. Circulation pipeline; 9. Intermediate pipeline; 10. Valve; 20. Step-able platform; 21. Evaporator; 22. Refrigeration component; 30. Main power control cabinet; 221. Compressor; 222. Condenser; 223. Second pipeline; 224. First pipeline; 225. Third pipeline; 226. Expansion valve; 227. Dry filter; 228. Fourth pipeline. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Figure 1 This is a schematic diagram of the structure of a chiller circulation system of the utility model. Figure 2 The schematic diagram of the structure of a refrigeration unit of a chiller circulation system of the utility model is as follows: Figure 1-2 As shown, a chiller circulation system of a preferred embodiment is shown, including an insulated water tank 1, at least one refrigeration unit 2, a water pipe 7 and a circulation pipe 8; an inlet pipe 5 and a return pipe 6 are connected between the refrigeration unit 2 and the insulated water tank 1, an internal circulation water pump 3 is installed on the return water pipe 6, the water pipe 7 is connected between the insulated water tank 1 and the user end, and an external circulation variable frequency water pump 4 is installed on the water pipe 7, and the circulation pipe 8 is connected between the user end and the insulated water tank 1.

[0029] The working principle of this embodiment is as follows: the required temperature is set according to the needs of the user end, and the water in the insulated water tank 1 is transported by the internal circulation water pump 3 through the refrigeration unit 2 (cooling and temperature control) to obtain the required water temperature and return to the insulated water tank 1 through the return pipe 6 to achieve a constant water temperature of the insulated water tank 1; the external circulation variable frequency water pump 4 provides a cold water source with a constant pressure through the insulated water tank 1 to the user's water source demand, and brings the used water back to the insulated water tank 1 through the circulation pipe 8, neutralizes the water temperature of the insulated water tank 1 again, and controls the water tank temperature through the internal circulation water pump 3.

[0030] In this embodiment, the components are connected by pipelines and can be disassembled and packaged separately, which effectively solves the problems of transportation space and export size restrictions. When transported to the user's site, it only needs to connect the components through pipelines and connect the power supply to operate, which is convenient and fast.

[0031] Preferably, the water inlet pipe 5 and the insulated water tank 1, the water inlet pipe 5 and the refrigeration unit 2, the return pipe 6 and the insulated water tank 1, and the return pipe 6 and the refrigeration unit 2 are all detachably connected via flange structures.

[0032] Furthermore, the outside of the insulated water tank 1 is wrapped with an insulation layer, which may be insulation cotton, foam board, etc.

[0033] Furthermore, as a preferred embodiment, the water inlet pipe 5 and the water use pipe 7 are both connected to the top side wall of the insulated water tank 1, and the return pipe 6 and the circulation pipe 8 are both connected to the bottom side wall of the insulated water tank 1.

[0034] Furthermore, as a preferred embodiment, the refrigeration unit 2 includes an evaporator 21 and at least one refrigeration component 22, the water inlet pipeline 5 and the return water pipeline 6 are both connected to the evaporator 21, the refrigeration component 22 includes a compressor 221 and at least one condenser 222, the compressor 221 is connected to the evaporator 21 through a first pipeline 224, the condenser 222 is connected to the compressor 221 through a second pipeline 223, and is connected to the evaporator 21 through a third pipeline 225.

[0035] More preferably, the refrigeration assembly 22 is provided with two groups, using dual compressors 221, and after the combination, the system has a large energy regulation range.

[0036] Furthermore, as a preferred embodiment, an expansion valve 226 is installed on the third pipeline 225 .

[0037] Furthermore, as a preferred embodiment, a drying filter 227 is also installed on the third pipeline 225 , and the drying filter 227 is arranged between the expansion valve 226 and the condenser 222 .

[0038] Furthermore, as a preferred embodiment, the expansion valve 226 is an electronic expansion valve 226 .

[0039] Preferably, the expansion valve 226 and the compressor 221 are connected via a fourth pipeline 228, and the exhaust temperature of the compressor 221 is controlled by the electronic expansion valve 226 to prevent the increase of the exhaust temperature from having an adverse effect on the system performance.

[0040] Furthermore, as a preferred embodiment, the compressor 221 is a scroll compressor 221 .

[0041] In this embodiment, components such as a scroll compressor 221 and an electronic expansion valve 226 are used to improve the stability and reliability of the unit performance.

[0042] Furthermore, as a preferred embodiment, an intermediate pipeline 9 is connected between the water inlet pipeline 5 and the water return pipeline 6 , and a valve 10 is provided on the intermediate pipeline 9 for opening and closing the intermediate pipeline 9 .

[0043] More preferably, valves 10 are provided on the water inlet pipeline 5 , the circulation pipeline 8 , the water pipe 7 , and the return pipe 6 , for opening and closing the water inlet pipeline 5 / the circulation pipeline 8 / the water pipe 7 / the return pipe 6 .

[0044] The valve 10 may be a manual valve or an electric valve.

[0045] Furthermore, as a preferred embodiment, it also includes a step-able placement platform 20, and the insulated water tank 1 is installed on the step-able placement platform 20.

[0046] More preferably, a main power control cabinet 30 is also provided on the steppable placement platform 20 , and the main power control cabinet 30 is electrically connected to the refrigeration unit 2 , the internal circulation water pump 3 , and the external circulation variable frequency water pump 4 .

[0047] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A chiller circulation system, characterized in that: include: Insulated water tank; At least one refrigeration unit; a water inlet pipeline and a water return pipeline are connected between the refrigeration unit and the thermal insulation water tank, and an internal circulation water pump is installed on the water return pipeline; A water pipeline, the water pipeline is connected between the thermal insulation water tank and the user end, and an external circulation variable frequency water pump is installed on the water pipeline; A circulation pipeline is connected between the user end and the thermal insulation water tank.

2. The chiller circulation system according to claim 1, characterized in that: The water inlet pipeline and the water use pipeline are both connected to the top side wall of the thermal insulation water tank, and the water return pipeline and the circulation pipeline are both connected to the bottom side wall of the thermal insulation water tank.

3. The chiller circulation system according to claim 1, characterized in that: The refrigeration unit includes an evaporator and at least one refrigeration component, the water inlet pipeline and the water return pipeline are both connected to the evaporator, and the refrigeration component includes: A compressor, wherein the compressor is connected to the evaporator via a first pipeline; At least one condenser, wherein the condenser is connected to the compressor via a second pipeline and is connected to the evaporator via a third pipeline.

4. The chiller circulation system according to claim 3, characterized in that: An expansion valve is installed on the third pipeline.

5. The chiller circulation system according to claim 4, characterized in that: The third pipeline is also provided with a drying filter, and the drying filter is arranged between the expansion valve and the condenser.

6. The chiller circulation system according to claim 4, characterized in that: The expansion valve is an electronic expansion valve.

7. The chiller circulation system according to claim 3, characterized in that: The compressor is a scroll compressor.

8. The chiller circulation system according to claim 1, characterized in that: An intermediate pipeline is connected between the water inlet pipeline and the water return pipeline, and a valve is provided on the intermediate pipeline for opening and closing the intermediate pipeline.

9. The chiller circulation system according to claim 1, characterized in that: It also includes a step-able placement platform, and the insulated water tank is installed on the step-able placement platform.

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