CN2265514Y - Electric refrigerator with heating thermal-insulating function - Google Patents

Abstract

The utility model relates to an electric refrigerator with a heating heat insulating functions. The utility model comprises three door box bodies, such as a freezing chamber, a refrigerating chamber, and a storing chamber which has double function of the heating heat insulation and the refrigeration, wherein, the refrigerating chamber and the storing chamber are communicated, the communicating opening of the refrigerating chamber and the storing chamber is provided with an insulating cover plate, and the storing chamber is provided with a heat source body. When the storing chamber is used for refrigerating food, the two chambers are communicated; when the storing chamber is used for heating and insulating the heat, the heat radiated by a heat source body can be insolated and sealed by the cover plate for the two chambers. The utility model has the freezing, the refrigerating, the heating heat insulation functions, and the utility model has a high utilization rate. The utility model has the advantages of simple structure, convenient operation, and energy saving.

Description

A kind of refrigerator with heating and heat preserving function

The utility model relates to a kind of refrigerator, particularly has the refrigerator of a storeroom that not only can refrigerate but also can heat tracing.

Existing refrigerator comprises refrigerating chamber and refrigerating chamber, and refrigerating chamber is used for storing the food that storage temperature is not higher than-10 ℃, and refrigerating chamber is then stored the food that storage temperature is higher than-10 ℃.This refrigerator does not generally have the storage temperature of storage and is higher than 20 ℃ food heat-insulation chamber, therefore can not satisfy the needs of family life fully.

But the purpose of this utility model is to provide a kind of to be had one and not only can refrigerate but also the refrigerator of the storeroom of heat tracing.

The purpose of this utility model is this realization: a kind of refrigerator that comprises refrigerating chamber and refrigerating chamber, its special character is that it also has one and both can be used as the refrigerating chamber use, can be used as the storeroom that use the heat tracing chamber again, storeroom is positioned at the refrigerating chamber bottom and is interconnected with refrigerating chamber, be provided with to be complementary with port and to be convenient to open at its passage port and two Room are communicated and close the heat insulation cover plate that makes two Room seal isolation, be provided with the heat source body that is used for producing heat in the storeroom.

Described heat source body can be an electrical heating elements or/and be arranged on the interior condenser A of refrigerator storeroom, and it can be arranged on storeroom sidewall or the bottom surface.Utilize electrical heating elements or condenser for refrigerator A to produce heat, the former need use electric energy, though the latter utilizes waste heat, when refrigerator is not worked, is difficult for reaching desired holding temperature.So mode that preferably adopts both to combine.When refrigerator was worked, the heat that utilizes condenser to distribute was realized heat tracing.When not working, then utilize electrical heating elements to produce heat.So both saved the energy, and can make storeroom reach certain holding temperature again.

Described storeroom, its underpart is for being provided with the groove of heat insulation cover plate, and heat source body is arranged in the groove, the notch shape of groove, big or small identical with port, two mouthfuls can a shared heat insulation cover plate.When storeroom used as the heat tracing chamber, heat insulation cover plate covered on port, and refrigerating chamber and storeroom are kept apart.When storeroom used as refrigerating chamber, heat insulation cover plate covered on notch, and heat source body and storeroom are kept apart.

By the heat source body that electrical heating elements and storeroom condenser A constitute, its governor circuit be by power switch K, successively the serial connection the temperature-control circuit relay J ₁Normally opened contact J _1-1, the delayed alarm circuit relay J ₂Normally-closed contact J _2-2, be attempted by the relay J of compressor for refrigeration working power end ₃often open, normally-closed contact J _3-1And and relay J ₃Normally-closed contact the CH electrical heating elements and the relay J that link to each other ₃The electromagnetic valve coil of the condenser A that links to each other of normally opened contact CL constitute.

On a cell wall of storage cloth chamber groove, be provided with the indoor and extraneous constant voltage wireway that is connected, identical in the holding chamber with pressure outside, prevent that the pressure that produces because of indoor heat tracing from backing down storeroom door and heat insulation cover plate, perhaps backs down the heat insulation cover plate on the notch.This wireway also can be used for discharging the liquid that produces because of heating evaporation simultaneously.

Condenser for refrigerator is made up of the condenser A two parts that are positioned at the casing back and have the condenser B of better ventilation condition and be positioned at storeroom.Compressor for refrigeration is connected with B with condenser A respectively through magnetic valve, and condenser A is connected to form path through check valve and condenser B.The magnetic valve energising, compressor is connected with condenser A.Magnetic valve no power, compressor then are connected with condenser B.That is to say that when the refrigerator storeroom was used for heat tracing food, compressor constituted path through magnetic valve and condenser A, check valve, condenser B polyphone.When the refrigerator storeroom was used for chilled food, compressor was connected with condenser B.Owing to be provided with check valve between condenser B and the A, so condenser B is not communicated with A.

Characteristics of the present utility model are: refrigerator not only has freezing and refrigerating chamber, but and also has not only a heat tracing but also a storeroom that can chilled food.This storeroom can be used as the heat tracing chamber in the winter time and uses, to keep treating the temperature of edible food, and simultaneously can also defrosting food.Then can be used as refrigerating chamber summer uses.That this refrigerator integrates is freezing, refrigeration, heat tracing, can satisfy the family life needs, self utilization rate height.It is simple in structure, easy to use, the heat heat preservation food that utilizes refrigerator to produce, and energy consumption is little.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an internal structure schematic diagram of the present utility model.

Fig. 3 is the schematic diagram of the utility model heat source body governor circuit.

Fig. 4 is the temperature-control circuit schematic diagram of the utility model heat source body.

Fig. 5 is the utility model heat source body delay control circuit schematic diagram.

Be described in further detail below in conjunction with accompanying drawing:

As shown in Figure 1, 2, the refrigerator that provides of the utility model is made of the three open-door casing that has heat tracing and refrigerate bifunctional storeroom (3) of the refrigerating chamber (2) at the refrigerating chamber that comprises top (1), middle part, bottom.Separation layer between refrigerating chamber and the storeroom (4) is provided with port, be provided with mouthful heat insulation cover plate (5) that is complementary therewith at passage port, the periphery of cover plate and port junction is provided with sealing ring, and makes both produce certain the suction-combining force by the magnetic material that is arranged on the separation layer passage port.Cover plate end face medial recess place is provided with handle (6).All be filled with the heat-insulation and heat-preservation material in separation layer and the cover plate cavity body.Heat source body is made up of electrical heating elements (7) and condenser A two parts.Electrical heating elements is the PTC heating plate, it is arranged on the storeroom rear wall, the front of PTC plate is provided with gas-flow deflector (8), the back promptly and between the rear wall is provided with electric fan (9), it is driven by the motor that is positioned at the casing outside (10), motor is by the power switch K control work of heat source body governor circuit, and the effect of electric fan and gas-flow deflector is that the heat that is sent by PTC and condenser A is distributed in the storeroom equably.Condenser is made up of condenser for refrigerator B and storeroom condenser A two parts.Condenser A is horizontally set in the groove (11) of storeroom bottom, and the notch place of groove can be provided with the heat insulation cover plate (5) that condenser A and storeroom are separated, and the notch shape of groove, size are identical with port, and two mouthfuls can a shared heat insulation cover plate.When storeroom was used for heat tracing food, heat insulation cover plate covered on the separation layer port.When being used for chilled food, this cover plate then covers on storeroom groove mouth.The turnover pipe (12) (13) of condenser A passes casing and is connected with condenser B with compressor (16) with check valve (15) through magnetic valve (14) respectively, is provided with one with groove and the extraneous wireway (17) that is interconnected on the cell wall of storeroom groove.

See Fig. 3, by the heat source body that PTC (7) and condenser A form, its governor circuit is by power switch K, the relay J of temperature-control circuit of serial connection successively ₁Normally opened contact J _1-1, delayed alarm circuit relay J ₂Normally-closed contact J _2-2, relay J ₃often open, normally-closed contact J _3-1And and relay J ₃The PTC that normally-closed contact CH links to each other, the electromagnetic valve coil that links to each other with normally opened contact CL are formed.For temperature-control circuit and delayed alarm circuit provide 12 volts of galvanic D.C. regulated power supplies (17) also by power switch K control break-make.Relay J ₃Be attempted by the two ends of compressor.Compressor operating, relay J ₃Must be electric, normally opened contact CL closure is communicated with electromagnetic valve coil.Compressor is not worked, relay J ₃Dead electricity, normally-closed contact CH closure is communicated with PTC.

Fig. 4 has provided a kind of schematic diagram of temperature-control circuit.This circuit is mainly by sensor R _t, comparator A-LM358, triode BG ₁, relay J ₁And resistance R ₁～R ₁₀Form.When not reaching set point of temperature, comparator A exports high level, triode BG ₁Conducting, relay J ₁Must be electric, be connected the normally opened contact J on the heat source body governor circuit _1-1Closed.When reaching set point of temperature, the comparator A output low level of overturning, triode BG ₁End relay J ₁Dead electricity, normally opened contact J _1-1Disconnect, in order to prevent the frequent break-make of relay, establish delay circuit in the circuit, delay time can be by adjusting R ₇Determine.Resistance R ₆Be used for adjusting temperature.LED is a power supply indicator, LED ₂Be burner on light.

Fig. 5 has provided a kind of schematic diagram of delayed alarm circuit, and it is mainly by IC-CC4541, triode Q ₁, Q ₂, relay J ₂, resistance R ₁～R ₃, potentiometer W ₁Deng composition.The delay time of this circuit is determined by adjusting potentiometer W.Behind the power connection, because IC 9 pin connect high level, output 8 pin are high level, make triode Q ₁Conducting, Q ₂End, relay keeps the state before the energising.When the IC timing arrives, it is low level that output 8 pin of IC are jumped by high level, makes triode Q ₁End Q ₂Conducting, relay gets electric, normally opened contact J _2-1Closure, buzzer toot cry, meanwhile, the normally-closed contact that is located on the heat source body governor circuit disconnects, and cuts off the heat source body power supply.

The course of work of the present utility model is: when storeroom uses as the heat tracing chamber, at first should cover heat insulation cover plate on the port of separation layer, refrigerating chamber and storeroom are kept apart, adjust the potentiometer R of temperature-control circuit then ₆As 50 ℃, adjust delayed alarm circuit potentiometer W to the stipulated time to set point of temperature, as 1 hour, connect power switch K, temperature-control circuit and delay control circuit must be established beginning work, relay J by cable ₁The normally opened contact closure, if this moment compressor be in duty, relay J ₃Normally opened contact CL closure, connect electromagnetic valve coil, magnetic valve will be connected the path of compressor and condenser A, the high-temperature high-pressure air flow that comes out from compressor flows to condenser A through magnetic valve, again through check valve to condenser B.Condenser A is as the thermal source of storeroom at this moment.If compressor is in off working state, relay J ₃Normally-closed contact CH reset, normally opened contact CL disconnects, PTC gets electric generation heat.When if the storeroom temperature surpasses the temperature of regulation, the relay J in the temperature-control circuit ₁Dead electricity, normally opened contact J _1-1Open, cut off the heat source body power supply.If delay time arrives, relay J ₂Normally-closed contact J _2-2Open, cut off the heat source body power supply, normally opened contact J _2-1The warning of sounding of closure, buzzer reminds user's temperature retention time to arrive.During heat source body work, electric fan is worked simultaneously.Storeroom can take out heat insulation cover plate and cover on storeroom groove mouth during as refrigerating chamber, and condenser A and storeroom are kept apart, and refrigerating chamber is communicated with storeroom.When compressor was in work, the heat source body governor circuit was not connected, and therefore the high-temperature high-pressure air flow that is produced by compressor directly enters among the condenser B through magnetic valve.Owing between condenser A and B, be provided with check valve, so air-flow can not enter among the condenser A.

Claims (6)

1, a kind of refrigerator with heating and heat preserving function, it comprises refrigerating chamber and refrigerating chamber, it is characterized in that it also has one and both can be used as the refrigerating chamber use, can be used as the storeroom that use the heat tracing chamber again, storeroom is positioned at the refrigerating chamber bottom and is interconnected with refrigerating chamber, be provided with to be complementary with port and to be convenient to open at its passage port and two Room are communicated and close the heat insulation cover plate that makes two Room seal isolation, be provided with the heat source body that is used for producing heat in the storeroom.

2, a kind of refrigerator with heating and heat preserving function according to claim 1 is characterized in that described heat source body can be an electrical heating elements or/and be arranged on the interior condenser A of refrigerator storeroom.

3, a kind of refrigerator according to claim 1 with heating and heat preserving function, it is characterized in that condenser for refrigerator is made up of the condenser A two parts that are positioned at the casing back and have the condenser B of better ventilation condition and be positioned at storeroom, compressor for refrigeration is connected with B with condenser A respectively through magnetic valve, and condenser A is connected to form path through check valve and condenser B.

4, a kind of refrigerator according to claim 1 with heating and heat preserving function, it is characterized in that described storeroom, its underpart is for being provided with the groove of heat insulation cover plate, and heat source body is arranged in the groove, the notch shape of groove, big or small identical with port, two mouthfuls can a shared heat insulation cover plate.

5, a kind of refrigerator with heating and heat preserving function according to claim 2 is characterized in that the heat source body that is made of electrical heating elements and storeroom condenser A, its governor circuit are by power switch K, the temperature-control circuit relay J of serial connection successively ₁Normally opened contact J _1-1, the delayed alarm circuit relay J ₂Normally-closed contact J _2-2, be attempted by the relay J of compressor for refrigeration working power end ₃often open, normally-closed contact J _3-1, and and relay J ₃Normally-closed contact the CH electrical heating elements and the relay J that link to each other ₃The electromagnetic valve coil of the condenser A that links to each other of normally opened contact CL constitute.

6, a kind of refrigerator with heating and heat preserving function according to claim 4 is characterized in that being provided with on a cell wall of storeroom groove with the indoor and extraneous constant voltage wireway that is connected.

Images