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External oil cooling device for novel water-cooled type low-temperature refrigerant compressor unit

A technology for refrigeration compression and cooling devices, which is applied to liquid variable-capacity machinery, mechanical equipment, and variable-capacity pump components. , the effect of easy maintenance

Inactive Publication Date: 2013-03-27
CHANGZHOU JINGLENG IND REFRIGERATION EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main shortcomings: the compressor does not have an external cooling device, and the stability is easy to be too high; the lubricating oil in the compressor will contain impurities that will affect the operation of the compressor

Method used

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  • External oil cooling device for novel water-cooled type low-temperature refrigerant compressor unit

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Embodiment

[0023] Such as figure 1 As shown, a new type of external oil cooling device for water-cooled low-temperature refrigeration compressor unit, which includes: compressor 1, oil cooler 2, oil pump 3 and hand valve A7. The compressor 1 is a medium-temperature screw compressor including a backup oil inlet 1-1 and a backup oil outlet 1-2. The spare oil outlet 1-2 is sequentially connected to the oil cooler 2, the hand valve A7, the oil pump 3 and the spare oil inlet 1-1. A bypass valve 6 is also connected in parallel between the spare oil outlet 1-2 and the hand valve A7. An oil filter 10 is connected between the oil pump 3 and the hand valve A7. A flow switch 12 is connected between the oil pump 3 and the standby oil inlet 1-1. Between the oil filter 10 and the flow switch 12, a regulating valve 4 and a one-way valve 5 are respectively connected in parallel. A differential pressure switch 13 for detecting the differential pressure between the inlet and outlet of the oil filter 1...

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Abstract

The invention relates to an external oil cooling device for a novel water-cooled type low-temperature refrigerant compressor unit. The external oil cooling device comprises a compressor (1), an oil cooler (2), an oil pump (3) and a hand valve A (7). The compressor (1) comprises a standby oil inlet (1-1) and a standby oil outlet (1-2), wherein the standby oil outlet (1-2) is sequentially connected with the oil cooler (2), the hand valve A (7), the oil pump (3) and the standby oil inlet (1-1), and a bypass valve (6) is connected between the standby oil outlet (1-2) and the hand valve A (7) in parallel. An oil filter (10) is connected between the oil pump (3) and the hand valve A (7). A flow switch (12) is connected between the oil pump (3) and the standby oil inlet (1-1). A differential pressure switch (13) for detecting differential pressure of an inlet and an outlet of the oil filter (10) is further provided. The external oil cooling device for the novel water-cooled type low-temperature refrigerant compressor unit has the advantages of cooling lubricating oil, removing impurities in the lubricating oil and prolonging the service life.

Description

technical field [0001] The invention relates to a thermodynamic cycle device, in particular to a novel external oil cooling device for a water-cooled low-temperature refrigeration compressor unit. Background technique [0002] Chinese Patent Publication No. CN101089518A discloses an air-cooled water-cooled double evaporator hot water unit, which has a refrigeration cycle circuit composed of a compressor, a water-cooled condenser, an air-cooled evaporator, and a water-cooled evaporator. There is a controller, and the compressor is connected to a water-cooled condenser through a four-way valve. The water-cooled condenser is connected with an inlet and an outlet, and the water-cooled condenser is connected to a thermal expansion valve. The air-cooled evaporator and the water-cooled evaporator are provided with water inlet and outlet ports, the water-cooled evaporator and the air-cooled evaporator are connected to a four-way valve, and the four-way valve is connected to the ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/06F04B39/16
Inventor 阚福林
Owner CHANGZHOU JINGLENG IND REFRIGERATION EQUIP
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