CN201110676Y

CN201110676Y - Refrigerator cooling cycle system with heat regenerator

Info

Publication number: CN201110676Y
Application number: CNU2007200607734U
Authority: CN
Inventors: 童蕾; 陈超敏
Original assignee: Guangdong Mechanical and Electrical College
Current assignee: Guangdong Mechanical and Electrical College
Priority date: 2007-12-04
Filing date: 2007-12-04
Publication date: 2008-09-03
Anticipated expiration: 2017-12-04

Abstract

The utility model discloses a refrigeration cycle system of a two-element non-azeotropic mixed-refrigerant refrigerator with a regenerator, which comprises a compressor, a condenser, a capillary tube, a refrigerating room evaporator and a cold storage room evaporator, and each component is connected orderly to form the refrigeration cycle system. Further, the refrigeration cycle system comprises a regenerator A and a regenerator B, a low pressure return conduit of the regenerator A is connected with a passage between an outlet of the cold storage room evaporator and an inlet of the compressor, a high pressure fluid conveying pipe of the regenerator A and a high pressure fluid conveying pipe of the regenerator B are in series connection via a conduit to be connected between the inlet of the capillary tube and the outlet of the condenser. The refrigeration cycle system adds two regenerators on the existing refrigeration system, which not only reduces the heat transfer temperature difference between the cold storage room evaporator and the cold storage room, but also can sufficiently employ energy and reduce exergy loss, thereby increasing coefficient of refrigeration of the refrigeration system, and achieving energy-saving effect.

Description

The cooling cycle system of refrigerator of band regenerator

Technical field

The utility model relates to a kind of cooling cycle system of refrigerator, especially relates to a kind of refrigeration working medium with regenerator and adopts double base non-azeotropic mixed working medium cooling cycle system of refrigerator.

Background technology

As shown in Figure 1, the conventional refrigerator cooling cycle system comprises compressor 11, condenser 13, capillary 12,14 5 parts of freezer evaporator 15 and refrigerator evaporator, and the continuous successively formation cooling cycle system of each parts.Its workflow is: the refrigeration working medium after the throttling flows through freezer evaporator 15 and refrigerator evaporator 14 along conduit and is heated and flashes to Low Temperature Steam, deliver to condenser 13 release heat after 11 actings of the compressed machine of this steam are compressed into the HTHP gas, warm liquid refrigeration working medium decrease temperature and pressure after capillary 12 throttlings becomes the low temperature liquid refrigeration working medium and delivers to freezer evaporator 15 and enter next circulation from the high pressure that condenser 13 comes out.

Refrigerator is as the big power consumer of household electrical appliance, and the development level of its power-saving technology has very big influence with the application of using world energy sources.At present, domestic refrigerator manufacturer the power-economizing method that generally adopts have following several basically: the leakage heat that the first, reduces refrigerator; The second, optimize structure; Three, adopt high-efficient compressor.This is the most direct effective power-economizing method; Four, the optimal design of refrigeration system.And the optimisation technique of cooling cycle system has: 1. reduce the power consumption that the compressor startup-shutdown causes; 2. strengthen the backheat utilization; 3. optimization of capillary flow and refrigerant charge or the like.Can there be certain energy-saving effect the front for three kinds, but also causes the high investment of crossing aspect production cost.Up to the present, many Refrigeration Technique personnel are being devoted to have good energy-conserving effect, and are simple and reasonable, in the research of the cooling cycle system that production cost is low.

The utility model content

The purpose of this utility model provides a kind of cooling cycle system of refrigerator with regenerator.

The purpose of this utility model can realize in the following manner: a kind of cooling cycle system of refrigerator with regenerator, comprise compressor, condenser, capillary, freezer evaporator and refrigerator evaporator, and each parts formation cooling cycle system that joins successively, also comprise regenerator A and regenerator B, low pressure return duct among the regenerator A is connected on the passage between outlet of described freezer evaporator and the refrigerator evaporator import, and the low pressure return duct among the regenerator B is connected in that high pressure pipe conveying fluid and the high pressure pipe conveying fluid among the regenerator B among the regenerator A is connected between the outlet of import capillaceous and condenser on the passage between described refrigerator evaporator outlet and the compressor inlet after the conduit series connection.

Return duct among return duct among the regenerator A described in the utility model and pipe conveying fluid, the regenerator B and pipe conveying fluid all adopt is close to reverse-flow layout in the pipe side by side.

Capillary described in the utility model is attached to the wall of inner container of refrigerating chamber.

The low pressure muffler of compressor inlet described in the utility model is close to the outer surface of condenser ends pipe regularly.

Compared with prior art, the utlity model has following advantage: (1), since the utility model increasing by two regenerators and changing position capillaceous, this not only can reduce the heat transfer temperature difference between refrigerator evaporator and the refrigerating chamber, and can allow the condenser system that the required energy of refrigeration working medium temperature recovery can be cooled in the muffler fully absorb, reduce fire with losing, thereby improve the coefficient of refrigerating performance of refrigeration system, reach energy-saving effect; (2), the utility model realizes only having increased by two regenerators energy-conservation the time, and is simple and reasonable, low cost of manufacture.

Description of drawings

Fig. 1 is a conventional refrigerator cooling cycle system structure chart;

Fig. 2 is a cooling cycle system of refrigerator structure chart of the present utility model.

The specific embodiment

As shown in Figure 2, cooling cycle system of the present utility model comprises compressor 21, condenser 23, capillary 22, freezer evaporator 25, refrigerator evaporator 24, regenerator A and regenerator B, low pressure return duct among the regenerator A is connected on the passage between 25 outlets of described freezer evaporator and refrigerator evaporator 24 imports, low pressure return duct among the regenerator B is connected on the passage between 24 outlets of described refrigerator evaporator and compressor 21 imports, between the import and the outlet of condenser 23 of the high pressure pipe conveying fluid among regenerator A and the regenerator B through being connected in capillary 22 after the conduit series connection.Return duct among return duct among the regenerator A and pipe conveying fluid, the regenerator B and pipe conveying fluid all adopt is close to reverse-flow layout in the pipe side by side.

Workflow is: the refrigeration working medium after the throttling flows through freezer evaporator 25 along conduit and is heated and flashes to the low temperature liquid-vapor mixture, this low temperature liquid-vapor mixture in regenerator A with from regenerator B come out high pressure warm liquid refrigeration working medium carry out flowing to refrigerator evaporator 24 after the heat exchange, become Low Temperature Steam after the heat absorption evaporation, this steam is sent to compressor 21 behind the warm liquid refrigeration working medium heat-shift and is compressed into the HTHP gas in regenerator B and from the high pressure that condenser 23 comes out, deliver to condenser 23 again, finish the heat absorption temperature-rise period; The high pressure that after condenser 23 release heat, comes out warm liquid refrigeration working medium respectively in regenerator B and regenerator A heat-shift after after capillary 22 throttlings decrease temperature and pressure become the low temperature liquid refrigeration working medium and deliver to freezer evaporator 25 and enter next circulation, finish the heat release temperature-fall period.

Refrigeration working medium of the present utility model adopts the double base non-azeotropic mixed working medium, utilize the peculiar temperature glide effect of non-azeotropic mixed working medium, the at first evaporation in freezer evaporator 25 of low boiling refrigeration working medium, the refrigeration working medium heating temperature in regenerator A that mixes higher raises, and flashes to steam in refrigerator evaporator 24 fully.Wherein, the effect of regenerator A is further to reduce the preceding high-pressure working medium temperature of capillary 22 throttlings on the one hand, improves the inlet temperature of refrigerator evaporator 24 preceding working medium on the other hand, thereby has reduced the heat transfer temperature difference of refrigerator evaporator 24 with freezer evaporator 25.And among regenerator B, carry out heat exchange steam temperature before compression is raise from the refrigeration working medium steam that refrigerator evaporator 24 comes out, reduce compressor 21 actings on the one hand, also reduced the temperature of the refrigeration working medium that comes out from condenser 23 on the other hand, the heat that compressor 21 preceding steam are raise comes the refrigeration working medium of condenser 23 terminals to provide, thereby the energy loss of system is minimized.

In order further to improve energy-saving efficiency, the outer surface that tight regularly condenser 23 terminal parts of the low pressure muffler part of compressor 21 import departments of refrigeration system of the present utility model are in charge of makes between them and carries out heat exchange by heat conduction or thermal-radiating mode.And come out to enter in order to make in the refrigerator refrigeration system that refrigeration working mediums kept cold in the capillary 22 from condenser 23; improve refrigerating efficiency; capillary 22 no longer is attached at the outer surface of low pressure muffler as traditional design; but press close to the refrigerating chamber wall of inner container as far as possible, this reaches not only heat exchange well but also the injury-free effect of protective hair tubule 22.Regenerator adds that capillary 22 attaches processing, the degree of supercooling of system has been increased, the required certain degree of superheat of the system that guaranteed, reduced the heat transfer temperature difference of freezer evaporator 25 with refrigerator evaporator 24, thereby improved the refrigerating capacity of system and the ratio of refrigeration work consumption (cop), can realize energy-conservation 5%-6%.

Claims

1, a kind of cooling cycle system of refrigerator with regenerator, comprise compressor, condenser, capillary, freezer evaporator and refrigerator evaporator, and each parts formation cooling cycle system that joins successively, it is characterized in that: also comprise regenerator A and regenerator B, low pressure cold return duct among the regenerator A is connected on the passage between outlet of described freezer evaporator and the refrigerator evaporator import, low pressure cold return duct among the regenerator B is connected on the passage between outlet of described refrigerator evaporator and the compressor inlet, and hot high pressure pipe conveying fluid among the regenerator A and the hot high pressure pipe conveying fluid among the regenerator B are through being connected between the outlet of import capillaceous and condenser after the conduit series connection.

2, a kind of cooling cycle system of refrigerator with regenerator according to claim 1 is characterized in that: return duct among return duct among the described regenerator A and pipe conveying fluid, the regenerator B and pipe conveying fluid are is close to reverse-flow layout in the pipe side by side.

3, a kind of cooling cycle system of refrigerator with regenerator according to claim 1, it is characterized in that: described capillary is attached to the wall of inner container of refrigerating chamber.

4, a kind of cooling cycle system of refrigerator with regenerator according to claim 1, it is characterized in that: the low pressure muffler of described compressor inlet is close to the outer surface of condenser ends pipe regularly.