CN1202396C

CN1202396C - Quick refrigerating device for refrigerator

Info

Publication number: CN1202396C
Application number: CN 02137944
Authority: CN
Inventors: 芮志明; 谢作为; 张雄杰
Original assignee: SITONG HOUSEHOLD ELECTRIC APPLIANCE FITTING FACTORY YIXING
Current assignee: SITONG HOUSEHOLD ELECTRIC APPLIANCE FITTING FACTORY YIXING
Priority date: 2002-06-18
Filing date: 2002-07-10
Publication date: 2005-05-18
Anticipated expiration: 2022-07-10
Also published as: CN1395075A

Abstract

The present invention relates to a refrigeration device for a refrigerator, particularly to a rapid refrigeration device for a refrigerator, which can be rapidly converted into a refrigeration working condition after a compressor is stopped and is started once again. The refrigeration device is characterized in that a unidirectional pressure retaining valve is connected to the input end of a refrigeration working loop condenser in series, and an auxiliary refrigerant pressure relief loop is connected to the unidirectional pressure retaining valve and both ends of the refrigeration working loop condenser in parallel. Two outlet paths are connected to a refrigeration loop by valves in an alternate conduction mode, and thus, a refrigerant with high pressure is still kept into the refrigeration working loop condenser after a compressor stops working. The compressor can rapidly enter a refrigeration working condition after the compressor is started, an energy saving effect is achieved, and the refrigeration device can save 10 to 20% of electrical energy within 24 hours. The refrigeration device is particularly suitable for a common mechanical temperature controlled refrigerator.

Description

A kind of quick refrigerating device for refrigerator

Technical field

The present invention relates to start the refrigerator quick cooling device that can change cooling condition rapidly over to once more after a kind of refrigerator refrigerating plant, the especially compressor shutdown.

Background technology

Existing refrigerator (comprising refrigerator) refrigerating plant such as Fig. 1 promptly are connected in series condenser, filter, capillary, evaporimeter successively in the compressor operating loop, form refrigeration work loop.This refrigerating plant, after compressor shutdown, system pressure returns back to low-pressure state very soon in the refrigeration loop, when compressor starts once more, then needs the time to carry out system's supercharging, makes the refrigeration pipe internal pressure rise to certain value and just can change effective cooling condition over to.Thereby the normally externally refrigeration of the once more starting initial stage of this chiller after compressor shutdown, and become invalid work done waste electric energy, and this periodic duty number of times of refrigerator is comparatively frequent, thereby the waste electric energy is considerable.

Summary of the invention

The objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of compressor shutdown is provided after, play the quick refrigerating device for refrigerator that kinetic energy changes cooling condition rapidly over to once more.

The object of the invention realizes, main improvement is that the check valve of pressurize effect is together set up in compressor high pressure, the series connection of condenser inlet end at refrigeration loop, and parallel connection inserts depressurized circuit in being serially connected with the condenser pipe of check valve, depressurized circuit outlet and condensator outlet, insert refrigeration loop by two-position three way magnetic valve or two stop valve alternate conduction, after realizing that compressor quits work, in ending under the pressurize effect of check valve, make the refrigerant that still keeps elevated pressures in the condenser, when compressor starts once more, need not pressurising and can change the refrigeration operating mode immediately over to.Specifically, quick refrigerating device for refrigerator of the present invention, comprise refrigeration work loop, it is characterized in that said refrigeration work loop condenser input is serially connected with check valve, one auxiliary refrigerant depressurized circuit is attempted by check valve and condenser two ends, auxiliary refrigerant depressurized circuit outlet and condensator outlet insert refrigeration loop by two-position three way magnetic valve or two stop valve alternate conduction.

The said check valve of the present invention, it is logical that access way is pressed the refrigerant workflow wizard, backflow ends, effect in refrigeration loop mainly is after compressor stops, and the effect that ends by check valve and serial connection valve ends the condenser pipe two ends, thereby make the pressure when keeping former refrigeration to work in the condenser, when compressor starts to work once more, wait for like this, can change normal refrigeration operating mode immediately over to owing to the refrigerant that maintains higher operating pressure in the condenser need not pressurising; Said refrigerant depressurized circuit, its effect are with after the compressor shutdown, and a refrigerant bypass backflow release path is provided, and have guaranteed the backflow of refrigerant after compressor shutdown, and compressor high-voltage end pressure is descended, and help compressor and start once more.Said depressurized circuit wherein is preferably and is connected to auxiliary condenser, can make full use of refrigerant refrigeration energy.Said valve alternate conduction can be the two position three-way valve of alternate conduction, also can be two stop valves, and effect is to open, stop and switch refrigerant work loop along with compressor, and cooperates check valve to play the pressurize effect.

The present invention is owing to be serially connected with check valve at the condenser inlet end of refrigerator refrigeration loop, and is parallel with and shuts down the refrigerant depressurized circuit, the outlet of two paths by valve respectively the conducting series connection insert the refrigerant cycles loop.Thereby after compressor quits work, make the refrigerant that still maintains elevated pressures in the duty condenser, after starting once more, compressor can change refrigeration operating mode fast-refrigerating rapidly over to, make the compressor start get final product refrigeration, thereby reduced compressor and started the idle work that to do system's pressurising once more, save electric energy, can save the electric energy of 10-20% in 24 hours.The present invention is particularly useful for the standard machinery temperature control refrigerator.

Below in conjunction with two example embodiment, further specify the structure of the present invention and the course of work, embodiment is not the qualification to concrete structure of the present invention.

Description of drawings

Fig. 1 is a prior art chiller schematic diagram.

Fig. 2 is two evaporimeters schematic diagrames that insert in parallel.

Fig. 3 is that two evaporator series insert schematic diagram.

Fig. 4 is one embodiment of the present invention structural representation.

Fig. 5 is the another embodiment of the present invention structural representation.

The specific embodiment

Embodiment 1: referring to Fig. 4, quick refrigerating device for refrigerator, be connected in series the check valve 2 that makes condensing agent reflux and end at duty condenser 3.1 arrival ends, one auxiliary condenser 3.2 is in parallel with the aforementioned duty condenser 3.1 that is connected to check valve, and two paths are concatenated into the refrigeration working cycles loop of device for drying and filtering 5, capillary 6, evaporimeter 7, compressor 1 by a two-position three way magnetic valve 4.

Compressor operating, two-position three way magnetic valve 4A-C conducting, A-B ends, the HTHP refrigerant of compressor output is by check valve 2, duty condenser 3.1, two-position three way magnetic valve A-C path, flow into device for drying and filtering 5, capillary 6, the evaporimeter 7 of serial connection successively, get back to compressor, form normal refrigeration working cycles, refrigerator normally freezes; When compressor quits work, two-position three way magnetic valve 4 switches, A-C ends, the A-B conducting, HTHP refrigerant in the refrigeration loop is got back to compressor through auxiliary condenser 3.2 off-loads of depressurized circuit, end because of check valve 2 this moment, and HTHP refrigerant is owing to check valve is maintained in the duty condenser 3.1 by effect; Compressor starts to work once more, replys the aforementioned normal refrigeration operating mode that changes over to, owing to remain with the refrigerant of high pressure in the duty condenser 3.1, thereby can make compressor change the refrigeration duty immediately over to.Thereby shortened the freezer compressor start back refrigeration time, reached energy-conservation purpose.

Embodiment 2: referring to Fig. 5, as embodiment 1, two-position three way magnetic valve is replaced with two bistable state cut-off electromagnetic valve.

Compressor operating, bistable state cut-off electromagnetic valve 10 is ended, and bistable state cut-off electromagnetic valve 11 conductings simultaneously enter normal refrigerant cycles; When compressor quits work, 10 conductings of bistable state cut-off electromagnetic valve, bistable state cut-off electromagnetic valve 11 is ended simultaneously, HTHP refrigerant in the refrigeration loop is got back to compressor through 3.2 off-loads of depressurized circuit auxiliary condenser, and HTHP refrigerant is owing to check valve is maintained in the duty condenser 3.1 by effect.

Evaporimeter 7 among the figure, can by Fig. 2,3 or other any-modes insert, be not particularly limited.

The bistable state cut-off electromagnetic valve can also replace with other stop valve, can realize conducting effect respectively equally.

Claims

1, a kind of quick refrigerating device for refrigerator, comprise refrigeration work loop, it is characterized in that described refrigeration work loop condenser input is serially connected with check valve, one auxiliary refrigerant depressurized circuit is attempted by check valve and condenser two ends, auxiliary refrigerant depressurized circuit outlet and condensator outlet insert refrigeration loop by two-position three way magnetic valve or two stop valve alternate conduction.

2,, it is characterized in that described stop valve is the bistable state cut-off electromagnetic valve according to the described quick refrigerating device for refrigerator of claim 1.

3,, it is characterized in that described auxiliary refrigerant depressurized circuit is an auxiliary condenser according to claim 1 or 2 described quick refrigerating device for refrigerator.