Box type unit with three parallel pistons

Abstract

The utility model relates to the field of refrigeration equipment, in particular to a piston three-parallel-connection box type unit which comprises three independent piston units, and each piston unit comprises a compressor, a condenser and an evaporator. Moreover, the three piston units operate in parallel through the shared liquid storage device, the oil separator and the cooling water system, the three independent piston units work at the same time, the refrigeration efficiency can be greatly improved through the parallel connection mode, quick response and efficient operation of the units are ensured, the liquid storage device, the oil separator and the cooling water system are shared, resource allocation is optimized, and the cost is reduced. The system has the advantages that the energy utilization efficiency of the whole system is improved, each piston unit can operate independently and can also work in parallel due to the modular design of the units, higher operation flexibility is provided for a user, and expansion interfaces on a liquid storage device, an oil separator and a cooling water tower are convenient to assemble and disassemble. The capacity of the system can be easily increased and expanded, and the constantly-changing refrigeration requirement is met.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration equipment, in particular to a piston three-parallel box-type unit. Background Art

[0002] Traditional piston chillers are widely used in the refrigeration industry, usually in the form of single or multiple units in parallel. This design model can meet the refrigeration needs to a certain extent, but it has obvious shortcomings in high-power refrigeration scenarios.

[0003] First, in order to meet the high-power cooling demand, it is often necessary to install multiple piston chillers, which significantly increases the space occupied by the equipment. In a limited space, installing multiple devices not only increases the difficulty of installation, but also increases the maintenance and management costs of the equipment.

[0004] Secondly, although running multiple devices in parallel can improve the refrigeration efficiency, it also increases the complexity of the system. Once one of the devices fails, it may affect the stable operation of the entire system, thereby reducing the reliability of the system.

[0005] Furthermore, the operation of multiple devices means higher energy consumption, which undoubtedly increases the operating cost. With energy becoming increasingly scarce, how to reduce energy consumption and improve energy efficiency has become an urgent problem to be solved in the refrigeration industry. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides a piston three-parallel box-type unit.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a piston three-parallel box-type unit of the utility model includes three independent piston units, each piston unit includes a compressor, a condenser and an evaporator; and the three piston units are operated in parallel through a common liquid reservoir, an oil separator and a cooling water system, the liquid reservoir is provided with a liquid inlet and a liquid outlet, wherein the liquid inlet is connected to the outlet of the evaporator through a pipeline, and the liquid outlet is respectively connected to the inlets of the evaporators of the three piston units through pipelines, the outlet of the evaporator and the inlet of the evaporator are provided with expansion valves, the oil separator is provided with an air inlet and an oil outlet, wherein the air inlet is connected to the outlet of the compressor through a pipeline, and the oil outlet is connected to the inlet of the compressor through a pipeline.

[0010] Preferably, the cooling water system includes a cooling water pump and a cooling water tower, wherein the outlet of the cooling water pump is connected to the inlet of the condenser through a pipeline, the outlet of the condenser is connected to the inlet of the cooling water tower through a pipeline, and the outlet of the cooling water tower is connected to the inlet of the cooling water pump through a pipeline to realize the circulation of cooling water.

[0011] Further preferably, the liquid inlet and outlet of the liquid reservoir, the air inlet and oil outlet of the oil separator, the outlet of the cooling water pump and the inlet of the cooling water tower are configured with three-way valves, and the three inlets of the three-way valves are configured with balancing pipes, and the balancing pipes are configured with flow regulating valves.

[0012] Again preferably, the liquid reservoir, the oil separator and the cooling water tower are provided with expansion interfaces, and the expansion interfaces use guide tubes to realize the splicing between multiple liquid reservoirs, oil separators and cooling water towers.

[0013] Preferably, it includes an installation frame, which includes a frame one and a frame two, the frame one is used to install a compressor, a condenser and an evaporator, and the frame two is used to install a liquid reservoir, an oil separator and a cooling water system, and the sides of the frame one and the frame two are provided with splicing rods, one side of the splicing rod is provided with a card slot, and the other side of the splicing rod is provided with a card rod, and the card slot is adapted to the card rod.

[0014] Further preferably, positioning holes are provided at the corners of the frame 1 and the frame 2, the splicing rod is adapted to the positioning hole via a threaded structure, the lower half of the splicing rod is a cavity structure, and the upper half of the splicing rod is adapted to the cavity.

[0015] Again preferably, the sides of the frame 1 and the frame 2 are provided with pulling grooves.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a piston three-parallel box type unit, which has the following beneficial effects:

[0018] Efficient energy utilization and cooling effect:

[0019] Three independent piston units work simultaneously, and the parallel connection can greatly improve the refrigeration efficiency and ensure the quick response and efficient operation of the units.

[0020] The shared liquid reservoir, oil separator and cooling water system optimizes resource allocation, reduces equipment redundancy, and thus improves the energy efficiency of the entire system.

[0021] Flexibility and scalability:

[0022] The modular design of the unit allows each piston unit to operate independently or in parallel, providing users with greater operational flexibility.

[0023] The expansion interfaces on the liquid receiver, oil separator and cooling water tower allow the system to easily increase and expand capacity to meet changing cooling needs.

[0024] System stability and reliability:

[0025] Through the design of three-way valves and balancing pipes, the flow of each pipeline can be effectively balanced to ensure that the system can remain stable under different working conditions.

[0026] The introduction of the flow control valve allows users to adjust the flow rate according to actual needs, further improving the stability and reliability of the system.

[0027] This piston three-parallel box-type unit achieves efficient and stable cooling effect by running three independent piston units in parallel, combined with a shared liquid reservoir, oil separator and cooling water system. The modular design, flow regulation and expansion interface configuration make the unit flexible and easy to maintain and expand. The ingenious design of the mounting rack improves installation efficiency and space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the piston unit of the utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the refrigeration unit of the utility model;

[0030] Figure 3 This is a schematic diagram of the installation frame structure of the utility model;

[0031] In the figure: 1. compressor; 2. evaporator; 3. condenser; 4. liquid storage tank; 5. oil separator; 6. cooling water pump; 7. cooling water tower; 8. three-way valve; 9. balance pipe; 10. flow regulating valve; 11. rack one; 12. rack two; 13. splicing rod; 14. clamping rod; 15. clamping slot; 16. pulling slot. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0033] See also Figure 1-3The utility model is a piston three-parallel box-type unit, comprising three independent piston units, each of which comprises a compressor 1, a condenser 3 and an evaporator 2; and the three piston units are operated in parallel through a common liquid reservoir 4, an oil separator 5 and a cooling water system, the liquid reservoir 4 is provided with a liquid inlet and a liquid outlet, wherein the liquid inlet is connected to the outlet of the evaporator 2 through a pipeline, and the liquid outlet is respectively connected to the inlet of the evaporator 2 of the three piston units through pipelines, and expansion valves are arranged on the outlet of the evaporator 2 and the inlet of the evaporator 2, the oil separator 5 is provided with an air inlet and an oil outlet, wherein the air inlet is connected to the outlet of the compressor 1 through a pipeline, and the oil outlet is connected to the inlet of the compressor 1 through a pipeline.

[0034] The preferred solution of the above three-parallel piston box-type unit is:

[0035] Cooling water circulation system: The cooling water pump 6 extracts cooling water from the cooling water tower 7 and transports it to the condenser 3 through the pipeline for heat exchange. The water after heat exchange flows back to the cooling water tower 7 through the pipeline again, completing the cooling process and forming a cycle.

[0036] Heat exchange process: In the refrigeration cycle composed of compressor 1, condenser 3 and evaporator 2, compressor 1 compresses the refrigerant into high-temperature and high-pressure gas, which enters condenser 3 to release heat and condense into liquid, then passes through liquid storage tank 4 and oil separator 5, enters evaporator 2 to absorb heat and evaporate into gas, and returns to compressor 1 to complete the refrigeration cycle.

[0037] Three-way valve 8 and flow regulation: The three-way valve 8 and balance pipe 9 configured at the outlet of the liquid reservoir 4, the oil separator 5, the cooling water pump 6 and the inlet of the cooling water tower 7 are used to adjust the flow to ensure stable operation of the system.

[0038] Equipment splicing and expansion: Through the expansion interface and the guide tube, the splicing between multiple liquid reservoirs 4, oil separators 5 and cooling water towers 7 can be realized, which is convenient for system expansion.

[0039] The working principle of the piston three-parallel box type unit is:

[0040] Piston units operate independently: Each piston unit includes a compressor 1, a condenser 3 and an evaporator 2, which work independently. The compressor 1 compresses the refrigerant into a high-temperature and high-pressure gas, which enters the condenser 3 to release heat and condense into liquid, and then is distributed to each evaporator 2 through the liquid storage 4. In the evaporator 2, the refrigerant absorbs heat and evaporates into gas, and then returns to the compressor 1 to form a refrigeration cycle.

[0041] Parallel operation and liquid reservoir 4: The three piston units are operated in parallel through a common liquid reservoir 4. The liquid inlet of the liquid reservoir 4 is connected to the outlet of the evaporator 2 to collect the evaporated refrigerant liquid. The liquid outlet sends the refrigerant liquid to the inlet of the evaporator 2 of the three piston units through pipelines to ensure that each unit has sufficient refrigerant supply.

[0042] Oil separation and circulation: The oil separator 5 is used to separate the lubricating oil in the exhaust of the compressor 1 to ensure the purity of the refrigerant. The air inlet is connected to the outlet of the compressor 1 to collect the oil-containing refrigerant gas. The oil outlet transports the separated lubricating oil back to the inlet of the compressor 1 to achieve oil recycling.

[0043] Cooling water circulation: The cooling water system includes a cooling water pump 6 and a cooling water tower 7. The cooling water pump 6 extracts cooling water from the cooling water tower 7 and sends it to the condenser 3 through a pipeline to help the refrigerant liquid in the condenser 3 release heat. The cooling water after heat exchange flows back to the cooling water tower 7 to complete the cooling cycle.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A piston three-parallel box type unit, characterized in that: The invention comprises three independent piston units, each of which comprises a compressor (1), a condenser (3) and an evaporator (2); and the three piston units are operated in parallel via a common liquid reservoir (4), an oil separator (5) and a cooling water system, the liquid reservoir (4) being provided with a liquid inlet and a liquid outlet, wherein the liquid inlet is connected to the outlet of the evaporator (2) via a pipeline, and the liquid outlet is connected to the inlet of the evaporators (2) of the three piston units via pipelines, respectively; the outlet of the evaporator (2) and the inlet of the evaporator (2) are provided with expansion valves, and the oil separator (5) is provided with an air inlet and an oil outlet, wherein the air inlet is connected to the outlet of the compressor (1) via a pipeline, and the oil outlet is connected to the inlet of the compressor (1) via a pipeline.

2. A piston three-parallel box type unit according to claim 1, characterized in that: The cooling water system comprises a cooling water pump (6) and a cooling water tower (7), wherein the outlet of the cooling water pump (6) is connected to the inlet of the condenser (3) via a pipeline, the outlet of the condenser (3) is connected to the inlet of the cooling water tower (7) via a pipeline, and the outlet of the cooling water tower (7) is connected to the inlet of the cooling water pump (6) via a pipeline, so as to realize the circulation of cooling water.

3. A piston three-parallel box type unit according to claim 2, characterized in that: The liquid inlet and liquid outlet of the liquid storage device (4), the air inlet and oil outlet of the oil separator (5), the outlet of the cooling water pump (6) and the inlet of the cooling water tower (7) are provided with a three-way valve (8), the three inlets of the three-way valve (8) are provided with a balancing pipe (9), and the balancing pipe (9) is provided with a flow regulating valve (10).

4. A piston three-parallel box type unit according to claim 3, characterized in that: The liquid reservoir (4), the oil separator (5) and the cooling water tower (7) are provided with expansion interfaces, and the expansion interfaces use flow guide pipes to realize the splicing between multiple liquid reservoirs (4), oil separators (5) and cooling water towers (7).

5. A piston three-parallel box type unit according to claim 4, characterized in that: The invention comprises an installation frame, wherein the installation frame comprises a first frame (11) and a second frame (12), wherein the first frame (11) is used to install a compressor (1), a condenser (3) and an evaporator (2), and the second frame (12) is used to install a liquid storage device (4), an oil separator (5) and a cooling water system, and the sides of the first frame (11) and the second frame (12) are provided with a splicing rod (13), one side of the splicing rod (13) is provided with a card slot (15), and the other side of the splicing rod (13) is provided with a card slot (14), and the card slot (15) is adapted to the card slot (14).

6. A piston three-parallel box type unit according to claim 5, characterized in that: Positioning holes are provided at the corners of the frame one (11) and the frame two (12); the splicing rod (13) is adapted to the positioning hole through a threaded structure; the lower half of the splicing rod (13) is a cavity structure; the upper half of the splicing rod (13) is adapted to the cavity.

7. A piston three-parallel box type unit according to claim 6, characterized in that: The sides of the first frame (11) and the second frame (12) are provided with lifting grooves (16).

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