CN2539945Y

CN2539945Y - Electronic cooling system for refrigerator

Info

Publication number: CN2539945Y
Application number: CN 02221981
Authority: CN
Inventors: 陈幼平; 刘光辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-25
Filing date: 2002-03-25
Publication date: 2003-03-12
Anticipated expiration: 2012-03-25

Abstract

The electronic cooling system of refrigerator is different from the prior refrigerator compressor refrigeration system, applies to each single-door, two-door, three-door refrigerator and all freezers and refrigerated containers and others for refrigeration, and comprises a semiconductor cooling device (1), cold-end radiator (2), heat-end radiator (3), cold-end cooling fan (4), heat-end cooling fan (5), return air pipeline (14) and control circuit (10). After the electronic cooling system is used in the refrigerator, as the electronic cooling system has a compact structure and is not like a compressor seeming like 'a huge monster', the effective capacity of the refrigerator will be increased in the same size of the appearance. The electronic cooling system of refrigerator compared with the prior compressor refrigeration systems does not need refrigerant, does not generate pollution, has low noise, simple structure, low failure rate and cost, operates reliably and is easily maintained,.

Description

The refrigerator electron refrigerating system

Existing various refrigerator, generally all can't do without compressor and various cold-producing medium, its circulatory system complexity, compressor operating is under HTHP, the circulatory system and compressor are all worked under the condition of sealing, break down easily, manufacture, keep in repair all cumbersome, wherein also some cold-producing medium does not meet environmental requirement, and is therefore desirable not enough.

The refrigerator electron refrigerating system belongs to electronic devices and components refrigeration, is operated under the open condition, except fan electromotor, does not have the parts of other mechanical movement, and noise is little, reliable when therefore working, and the life-span is long.More without any pollution.

A kind of semiconductor cooler is arranged, wherein the temperature difference of one-level cooler can reach 50-60 ℃, the temperature difference of secondary cooler can reach 70-80 ℃, the temperature difference of three grades of coolers can reach 80-90 ℃, if 20 amperes secondary cooler is used for refrigerator, can makes the temperature inside the box drop to subzero 50 ℃ within an hour from 25 ℃.The working life of this semiconductor cooler reaches hundreds of thousands hour.The refrigerator electron refrigerating system is then selected this semiconductor cooler for use.

The refrigerator electron refrigerating system is achieved by the following technical solution: the refrigerator electron refrigerating system is made up of refrigerator, cool and heat ends radiator, electric fan, control circuit.It is characterized in that there is not mechanical moving element in the refrigerator, so its work the time is static fully.

Describe according to Figure of description below.

The 1st page of Fig. 1 of specification is the functional-block diagram of refrigerator electron refrigerating system, (1) is semiconductor cooler among the figure, (2) be the cold junction radiator, (3) be the hot-side heat dissipation device, (4) be the cold junction radiator fan, (5) be the hot-side heat dissipation fan, (6) are the refrigerating chamber air inlets, and (7) are the refrigerating chamber air inlets, (8) be the refrigerating chamber return air inlet, (9) be that refrigerating chamber return air inlet (10) is a control circuit, (11) are the refrigerating chambers of refrigerator, and (12) are the refrigerating chambers of refrigerator, (13) be thermal insulation layer, (14) be return air duct, (15) are the hot blast air outlets, and (17) are attaching plug (civil power 220V).

Refrigerator electron refrigerating system operation principle is as follows: control circuit (10) gets electric work by attaching plug (17), to semiconductor cooler (1), cold junction radiator fan (4) and hot-side heat dissipation fan (5) power supply, semiconductor cooler (1) gets electric work, it is blown out heat radiation by hot-side heat dissipation fan (5) by hot blast air outlet (15) at the heat that hot-side heat dissipation device (3) is produced, and the air circulation of heat radiation is open.The cold that the cold junction radiator produces then is blown into the refrigerating chamber (11) of refrigerator and the refrigerating chamber (12) of refrigerator by cold junction radiator fan (4) respectively by refrigerating chamber air inlet (6) and refrigerating chamber air inlet (7), and by refrigerating chamber return air inlet (8) be the circulation of refrigerating chamber return air inlet (9), return air duct (14) formation cold air.Refrigerating chamber (11) space is less because refrigerating chamber air inlet (6) is big; Refrigerating chamber air inlet (7) is less and refrigerating chamber (12) space is bigger, so, in refrigerating chamber (11) and refrigerating chamber (12), form different temperature.Can reach the standard of three-star refrigerator, promptly refrigerating chamber is subzero 18 ℃, and refrigerating chamber is about 4 ℃.

Owing to be air-cooled, refrigerating chamber does not have the phenomenon of frosting.

The 1st page of Fig. 2 of specification is basic electrical schematic diagram, and (B) is step-down transformer among the figure, (D) is rectifier, (C) is filter condenser, (1) being semiconductor cooler, (K) is the controlling refrigerator door switch, (R) is temperature controller, (L) being bulb, (J) is relay, (J ₁), (J ₂) be two pairs of contacts of relay, (4) are the cold junction radiator fans, (5) are the hot-side heat dissipation fans, (X) are protective tube.

The circuit working principle is as follows: when refrigerator doors is shut, the 220V civil power after transformer (B) step-down, rectifier (D) rectification, capacitor (C) filtering to semiconductor cooler (1) the power supply refrigeration that is operated under the low-voltage direct state.Simultaneously, the 220V civil power makes cold junction radiator fan (4), hot-side heat dissipation fan (5) and relay (J) work by temperature controller (R), controlling refrigerator door switch (K).When temperature reached design temperature in the refrigerator, temperature controller (R) disconnected, and makes cold junction radiator fan (4), hot-side heat dissipation fan (5) and relay (J) dead electricity quit work the contact (J of relay (J) ₁) disconnect, semiconductor cooler (1) quits work.When refrigerator doors is opened, controlling refrigerator door switch (K) promptly disconnects relay (J) and cold junction radiator fan (4), semiconductor cooler (1) and cold junction radiator fan (4) are quit work, in order to avoid cold air in the refrigerator is blown out outside the case, but hot-side heat dissipation fan (5) is still in work, because of the heat on the radiator can't disappear immediately.Meanwhile, controlling refrigerator door switch connection bulb (L) is so that people's accessing article.

For for simplicity, indicator lamp and defroster do not draw among the 1st page of Fig. 2 of specification.

Instructions Page 2 Fig. 3 is the refrigerator side sectional view, (15) are the hot blast air outlets among the figure, (6) be the refrigerating chamber air inlet, (11) be the refrigerating chamber of refrigerator, (2) be the cold junction radiator, (1) be semiconductor cooler, (8) are the refrigerating chamber return air inlets, and (7) are the refrigerating chamber air inlets, (14) be return air duct, (13) be thermal insulation layer, (3) are the hot-side heat dissipation devices, and (4) are the cold junction radiator fans, (5) be the hot-side heat dissipation fan, (9) be the refrigerating chamber return air inlet, (16) are wanigans, (10) control circuit.This figure is a kind of reference diagram of two-door refrigerator, drainpipe and drip tray after the cold junction defrost of not drawing among the figure.

Instructions Page 3 Fig. 4 is the semiconductor cooler installation diagram, and (1) is semiconductor cooler, and (6), (7) are its two electrodes, and (2) are the cold junction radiators, and (3) are the hot-side heat dissipation devices, and (4) are thermal insulation layers, and (5) are the nylon fastening bolts.Cold junction radiator (2) and hot-side heat dissipation device (3) clamp several semiconductor coolers (1) by several nylon bolts (5), to absorb cold and the heat that semiconductor cooler (1) is produced reliably, its complementary space between cold junction radiator (2) and hot-side heat dissipation device (3) is then installed thermal insulation layer (4), with the heat transmission between blocking-up cold junction (2) and hot junction (3).

Instructions Page 3 Fig. 5 is the profile of cold junction radiator and hot-side heat dissipation device, and cold junction radiator and hot-side heat dissipation device are the heat sink format of being made by copper material or aluminium.

After refrigerator has adopted the electron cooling system,, therefore, under same appearance and size, the dischargeable capacity of refrigerator will be increased because electron cooling system architecture compactness does not have compressor such " huge monster " again.The refrigerator electron refrigerating system is compared with compressor refrigeration system, and it does not need refrigerant, not pollution, operating noise is little, simple in structure, reliable, fault rate is low, maintenance is easy, cost is low.

It is applicable to the refrigeration of various simple gates, two-door, refrigerator such as three and various refrigerator-freezer, refrigerator etc.

Claims

1, refrigerator electron refrigerating system, formed by semiconductor cooler (1), cold junction radiator (2), hot-side heat dissipation device (3), cold junction radiator fan (4), hot-side heat dissipation fan (5), return air duct (14) and control circuit (10), it is characterized in that cold junction radiator (2) and hot-side heat dissipation device (3) come fastening semiconductor cooler (1) by nylon bolt, so that cold junction radiator (2) and hot-side heat dissipation device (3) absorb cold and the heat that semiconductor cooler (1) is produced reliably.

2, refrigerator electron refrigerating system as claimed in claim 1, its feature also have been in the space mounting except the shared space of semiconductor cooler (1) between cold junction radiator (2) and the hot-side heat dissipation device (3) thermal insulation layer (13).

3, refrigerator electron refrigerating system as claimed in claim 1 is characterized in that having adopted fan forced heat radiation and fan to transmit cold air.