CN2526757Y

CN2526757Y - Device for refrigerating and defrosting

Info

Publication number: CN2526757Y
Application number: CN 01226934
Authority: CN
Inventors: 程聪棋
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-08
Filing date: 2001-06-08
Publication date: 2002-12-18
Anticipated expiration: 2011-06-08

Abstract

The utility model relates to a device for refrigerating and defrosting. The four components of a refrigerating and cycling device of the device for refrigerating and defrosting comprise a compressor, an evaporator, a cold medium controller and a condenser; wherein a defrosting loop is arranged. The defrosting loop is a device provided with a warehouse which is stored with non freezing solution and can conduct flow in the condenser to absorb heat through the non freezing solution, so as to form non freezing solution with high temperature and conduct the non freezing solution back to the warehouse; when the frost coagulated on a perisporium of a cold medium pipe of the evaporator is needed to be removed, the non freezing solution with high temperature is conducted in the evaporator to radiate and defrost; then the non freezing solution with low temperature after radiating is led to flow back to the warehouse to form circulation.

Description

The freezing and refrigeration defroster

The design belongs to the technical field of structures of refrigerating engineering, relates in particular to a kind of freezing and refrigeration defroster, refers in particular to and have additional a defrost circuit in freezing cycle device, and the energy used heat that use device produced, with the operation that defrosts, it is good to reach defrosting effect, effectively saves energy waste.

Modern age the developing rapidly of refrigerating plant, the application on various industrial technologies is also very extensive, the preservation food in the general reference daily life is as domestic refrigerator; The application of ice making industry, the application of food industry, the cooling device rapidly of metal tools, chemical worker's chemical reaction control, air conditioning or other special application, too numerous to enumerate, refrigerating engineering is breezy relevant with everyone life as can be known, but, in the freeze cycle process, still have its unavoidable problem, because it is extremely low in the evaporimeter environment temperature, therefore very easily frosting herein, the evaporimeter refrigerant pipe periphery of refrigerator inside for example, just very easily frosting.

General known freezing and refrigeration defroster roughly is divided into high pressure defrost, heating wire defrosting, water defrosting; Wherein high pressure defrost reverses freeze cycle, to utilize high temperature refrigerant the frosting of evaporimeter refrigerant pipe periphery is removed, but because reverse is not general recurrent state for freezing cycle device, therefore causes the damage of refrigerating plant easily.

In addition, have heating wire defrosting and water defrosting on the market, and heating wire defrosting is located at for the heating wire circuit connects and abuts near the evaporimeter refrigerant pipe, when heating wire conducts electricity, make heating wire produce the high heat energy of high resistance, remove so that near the frosting the refrigerant pipe of evaporimeter is melted, but, because heating wire need be arranged on the power supply in addition, and the waste in the energization source of moving;

As for water defrosting, frosting is washed away near evaporimeter refrigerant pipe for utilizing the water swash of wave, in some freeze cycle comparatively under the situation of low temperature, then inapplicable this kind method, therefore Defrost method in above-mentioned three kinds of fridge-freezers commonly used still has above-mentioned disappearance, and needs to improve.

The design's main purpose is for providing a kind of freezing and refrigeration defroster, it has additional a defrost circuit in freezing cycle device, and utilize the used heat that is produced that defrost circuit can absorption plant itself, to connect into this evaporimeter, the effect of defrosting, can save the energy and reach, and preferable defrosting effect.

The design's a time purpose is for providing a kind of freezing and refrigeration defroster, it can be equiped with an assisted heating device outside the apotheca of defrost circuit, make non freezing solution when the defrosting temperature is not enough, must utilize the assisted heating device heating, increase temperature so that the operation that defrosts.

For achieving the above object, a kind of freezing and refrigeration defroster that the design provides, refrigeration system is made of compressor, condenser, expansion valve, evaporimeter, cooling tower.

This condenser inside of the design is provided with the refrigerant channel that communicates with the refrigerant pipe, and the non freezing solution runner; This evaporimeter inside is provided with refrigerant pipe and defrosting pipe;

The design is provided with a defrost cycle device, this defrost cycle device includes one and adds a temperature loops and a defrost circuit, wherein, the described temperature loops that adds comprises an interior reservoir and has pipeline, that the apotheca, of solidifying liq not is connected in the non freezing solution runner input of apotheca and described condenser inside and be located at the return line that pump, on this pipeline is connected in condenser non freezing solution output and apotheca input;

The design's defrost circuit comprises one and is connected in conduit, between the defrosting pipe input of apotheca output and evaporimeter and is located at this supravasal pump, one and is connected in the defrosting pipe output of evaporimeter and the return-flow catheter of apotheca input.

The periphery of the design's apotheca is provided with an auxiliary heater.

The adiabatic condensation temperature of the design's non freezing solution is lower than the temperature of this evaporimeter refrigerant pipe periphery.

For further understanding the design's architectural feature and practical effect, elaborate as the back with preferred embodiment conjunction with figs. hereinafter described:

(1) accompanying drawing is partly:

Fig. 1 is the design's freezing cycle device figure.

Fig. 2 is the schematic cross-section on the design's inner condensing tube road.

Fig. 3 is the schematic perspective view of the design's part vaporization chamber.

Fig. 4 is another embodiment freezing cycle device figure of the design.

(2) figure number is partly:

(10) add temperature loops (11) apotheca

(110) (12) pipeline (111) return line

(13) refrigerant channel (14) non freezing solution runner

(15) (23) pump (20) defrost circuit

(200) refrigerant pipe (21) defrosting pipe

(22) conduit (24) return-flow catheter

(30) compressor (40) (41) condenser

(50) expansion valve (60) evaporimeter

(70) cooling tower (80) auxiliary heater

As shown in Figure 1, the freezing cycle device figure of the design's freezing and refrigeration defroster, the output of one compressor (30) is provided with the refrigerant pipe of a conveying refrigerant, to connect to condenser (40) input of a cooling refrigerant, and be provided with the refrigerant pipe by this condenser (40) output, connect the input that can reduce the expansion valve (50) of refrigerant pressure to one, the output that is matched with expansion valve (50) again is provided with the refrigerant pipe, this refrigerant pipe is connected to evaporimeter (60) input of cooling matchmaker heat absorption, and be provided with a refrigerant pipe by this evaporimeter (60) output and carry high temperature refrigerant, be arranged in the input of this compressor (30), and the main manner of execution of this freeze cycle is:

By the air-breathing scavenging action of this compressor (30), make refrigerant form the gaseous coolant of high pressure-temperature;

The gaseous coolant of this high pressure-temperature is imported in the condenser (40), outer and use the type of cooling by condenser (40) pressurization, and make gaseous coolant condense into liquid refrigerants, and discharge heat and compressor (30) the heat that work done produced of refrigerant in evaporimeter (60) institute absorption refrigerating space, and the type of cooling of this evaporimeter (60) is for utilizing cooling tower (70) cooling, utilize the recirculated cooling water in the cooling tower (70) to import condenser (40), by cooling water flow through condenser (40) refrigerant pipe periphery, with the effect of absorbing heat, refrigerant in cooler condenser (40) the refrigerant pipe, and make the refrigerant cooling form the liquid refrigerants of high pressure low temperature;

Make the liquid refrigerants of the high pressure low temperature expansion valve (50) of flowing through again,, form the liquid refrigerants of low-pressure low-temperature so that the high pressure refrigerant by narrow valve port, makes refrigerant pressure reduce;

The refrigerant liquid of low-pressure low-temperature flows in this evaporimeter (60) again, because of descending, pressure impel liquid refrigerants to be evaporated rapidly easily, and refrigerant can absorb a large amount of evaporation latent heats once evaporation, to absorb evaporimeter (60) ambient heat, make evaporimeter (60) environment temperature rapid drawdown, therefore near the easy frosting of airborne hydrone evaporimeter (60) the refrigerant pipe

The design's principal character is:

Be provided with a defrost cycle device, this defrost cycle device includes one and adds a temperature loops (10) and a defrost circuit (20), this adds temperature loops (10) and is provided with an apotheca (11), be equipped with the non freezing solution of freezing point in this apotheca (11) far below the interior refrigerant pipe of this evaporimeter (60) temperature, utilize apotheca (11) to be provided with a pipeline (110), be provided with a pump (15) between pipeline (110) to utilize, non freezing solution is imported in the condenser (40), as Fig. 2, divide between pipeline (12) wall of this condenser (40) and be separated with two partly, some is provided with multiple tracks refrigerant channel (13), another partly is provided with multiple tracks non freezing solution runner (14), utilize the high temperature refrigerant of condenser (40) refrigerant channel (13) of flowing through, make this non freezing solution non freezing solution runner (14) of flowing through simultaneously, and utilize pipeline (10) wall to be formed with the heat exchange of conduction, make non freezing solution can absorb the heat energy of high temperature refrigerant, reduce the temperature of refrigerant simultaneously, return apotheca (11) with a return line (111) water conservancy diversion again, absorb heat by importing in the condenser (40) of non freezing solution repetitiousness again by pipeline (110), be stored in apotheca (11) to form the high temperature non freezing solution, and reach the used heat that can utilize condenser (40), this non freezing solution of heating is with the waste of effective saving energy;

This defrost circuit (20) is by a conduit (22) of apotheca (11), and this conduit one end is connected with in the input of this evaporimeter (60), and is provided with a pump (23) between this conduit (22), with the pressurization non freezing solution.This high temperature non freezing solution inflow evaporator (60) of water conservancy diversion, as Fig. 3, be provided with the refrigerant pipe (20) of arrangement in this evaporimeter (60), and be interval in the defrosting pipe (21) between refrigerant pipe (20), because the temperature of all sides of refrigerant pipe (20) of evaporimeter (60) is extremely low, easily make refrigerant pipe (20) frosting, can import the defrosting pipe (21) that is interval between refrigerant pipe (20) this moment with the high temperature non freezing solution, make non freezing solution have the heat exchange action of heat radiation, so that the frost melts between refrigerant pipe (20) is got rid of, make the high temperature non freezing solution dispel the heat into the low temperature non freezing solution, utilize this defrosting pipe (21) to connect out evaporimeter (60) again and be provided with a return-flow catheter (24), this return-flow catheter (24) is led and is located at this apotheca (11) one ends, and simultaneously low temperature non freezing solution water conservancy diversion is returned in the apotheca (11), so that add temperature loops next time.

As Fig. 1, under some ultralow temperature or winter freezing device, evaporimeter (40) refrigerant duct ligation frost speed is fast, and easily cause the temperature after the defrosting of this non freezing solution low excessively, and still can't heat fast and effectively through adding temperature loops, can have additional an auxiliary heater (80) this moment in a side of this apotheca (11), with the auxiliary temperature that increases non freezing solution fast, conveniently to carry out defrosting operation next time.

Again as shown in Figure 4, another implements illustration the design, in the design's freeze cycle, when the effect of the pressurization cooling refrigerant of this condenser (40) is not enough, can utilize and set up a condenser (40) again, high temperature refrigerant is flowed through behind first condenser (41), second condenser (41) of flowing through again, to increase the supercharging cooling effect of high temperature refrigerant, make the refrigerant cooling tower (70) of flowing through, be back to second condenser (41), be guided to expansion valve (50) through second condenser (41) again, to carry out the freeze cycle operation.

By said structure, the design's freezing and refrigeration defroster has following advantages:

1. because the design mainly utilizes the used heat of condenser, absorb heat energy by non freezing solution, and Not freezing after heating up introduced near the condenser pipe of evaporimeter, with the effect of defrosting, reached energy Effectively remove the frosting of refrigerant pipe periphery, and can effectively reduce the waste of the energy, do not expend other The energy has practicality and economy.

2. by the apotheca outside of the design's defrost cycle device, can have additional an auxiliary heater, Can overcome the serious or environment temperature of some ultralow temperature frostings to increase the defrosting temperature of non freezing solution, to reach Low special freezing place.

Claims

1, a kind of freezing and refrigeration defroster, refrigeration system is made of compressor, condenser, expansion valve, evaporimeter, cooling tower, it is characterized in that:

This condenser inside is provided with the refrigerant channel that communicates with the refrigerant pipe, and the non freezing solution runner;

This evaporimeter inside is provided with refrigerant pipe and defrosting pipe;

An if defrost cycle device, this defrost cycle device includes one and adds a temperature loops and a defrost circuit, wherein, the described temperature loops that adds comprises an interior reservoir and has pipeline, that the apotheca, of solidifying liq not is connected in the non freezing solution runner input of apotheca and described condenser inside and be located at the return line that pump, on this pipeline is connected in condenser non freezing solution output and apotheca input;

This defrost circuit comprises one and is connected in conduit, between the defrosting pipe input of apotheca output and evaporimeter and is located at this supravasal pump, one and is connected in the defrosting pipe output of evaporimeter and the return-flow catheter of apotheca input.

2, freezing and refrigeration defroster according to claim 1, it is characterized in that: the periphery of this apotheca is provided with an auxiliary heater.

3, freezing and refrigeration defroster according to claim 1 and 2 is characterized in that: the adiabatic condensation temperature of this non freezing solution is lower than the temperature of this evaporimeter refrigerant pipe periphery.