CN2694189Y - Air-cooling and direct-cooling combined refrigerator with three systems - Google Patents

Abstract

The utility model provides a three-system combined wind and direct cooling refrigerator, which includes three refrigerator compartments, the refrigerator compartment is surrounded by two side walls, a rear wall, a top wall and a bottom wall, and the refrigerator is provided with a circulating pipe A compressor, a condenser, and an evaporator connected in sequence form a refrigeration cycle system. The refrigeration system is controlled by a control circuit. One of the refrigerator compartments uses a fan in the air duct that matches the evaporator to blow cold air into the refrigerator. Cold mode refrigeration, the temperature can be continuously adjusted from refrigeration to freezing; the other two refrigerator compartments are refrigerated by direct cooling, which are the refrigerator compartment and the freezer compartment, and the overall cooling effect is realized by the matching of the three-system refrigeration system and circuit control; Among them, the cold room and the temperature-changing room can be closed separately. The refrigerator has multiple temperature zones such as refrigeration, freezing, and variable temperature zones. Users can adjust the configuration of the refrigerator according to their own needs to meet different requirements.

Description

Three-system wind, direct cooling refrigerator

technical field

The utility model relates to a refrigerator, in particular to a three-system air-cooling and direct-cooling refrigerator which adopts both the air-cooling system and the direct-cooling system to refrigerate the refrigerator.

Background technique

Refrigerators are widely used household appliances. In order to meet the needs of different temperature ranges of food preservation, refrigeration (temperature range 5 ~ -1 ℃) and freezing (temperature range below -18 ℃), refrigerators are usually equipped with multiple refrigerator compartments. , the refrigerator compartment is surrounded by two side walls, a rear wall, a top wall and a bottom wall. A refrigeration cycle system including a compressor, an evaporator and a condenser is installed in the refrigerator. The refrigeration system is connected by a circulation pipeline, which is the refrigerator compartment The refrigeration device is an evaporator. Through the circulation of the refrigerant in the refrigeration system, especially through the expansion of the refrigerant in the evaporator, it can absorb the heat in the surrounding air and cool the refrigerator compartment. In order to realize the cooling of the refrigerator compartment, the evaporator is usually arranged on the rear wall, side wall, top wall or bottom wall of the refrigerator compartment. There are two refrigeration methods for existing refrigerators. One is to directly install the refrigerator evaporator on the wall surrounding the refrigerator compartment, and cool the surrounding air through the evaporator, and transfer the cold energy to the refrigerator compartment for refrigeration. The first method is the direct cooling method, and the direct cooling method can also directly install the evaporator in the refrigerator compartment through the coil; the other method is to install the evaporator in the wall surrounding the refrigerator compartment, usually in the refrigerator In the rear wall of the compartment, an air duct connected to the evaporator is arranged on the wall surface surrounding the refrigerator compartment, an air supply fan is arranged in the air duct, and an air duct connected to the refrigerator compartment is arranged on the wall surface enclosing the refrigerator compartment. The connected air outlet blows the cold air refrigerated by the evaporator into the refrigerator compartment through the air outlet through the fan to cool the refrigerator compartment. Existing refrigerators, especially refrigerators with multiple refrigerator compartments, all use direct cooling to cool the refrigerators, or all use air-cooling to cool the refrigerators. Among them, refrigerators that use direct cooling require cooling for each refrigerator compartment. Each compartment is equipped with an evaporator, and an air-cooled refrigerator can be equipped with an evaporator for each compartment of the refrigerator, but usually one or more evaporators are installed, and multiple air ducts are used to connect the evaporator and the compartment of the refrigerator. , the cold air is blown by the blower fan to cool the refrigerator compartment. Compared with the air-cooled cooling method, the direct cooling method can save the space of the refrigerator compartment and accommodate more food because the evaporator is directly arranged on the wall surrounding the refrigerator compartment or in the refrigerator compartment. The air-cooled cooling method has a narrow temperature range, and the temperature range changes slowly. For example, the direct-cooled refrigerator compartment can only be set as a fresh-keeping room, refrigerator room or freezer room through a certain evaporator configuration. The temperature of the refrigerator compartment Difficult to adjust, when the user of the refrigerator adjusts the operating temperature of the refrigerator compartment due to special needs, it is not easy to realize. At the same time, due to the slow temperature change of the direct cooling refrigerator, compared with the air-cooling refrigeration method, the chance of food deterioration in the refrigerator increases, and the refrigerator consumes a lot of energy.

Contents of the invention

The utility model provides a new type of three-system system for the existing refrigerators provided with multiple refrigerator compartments, adopting the direct cooling method for refrigeration, the refrigerator has a large effective space, adopts the air-cooling method for refrigeration, and has a wide temperature range adjustment. Air direct cooling refrigerator, in this refrigerator, some refrigerator compartments are refrigerated by space-saving direct cooling method, and some refrigerator compartments are refrigerated by air-cooling method with fast temperature adjustment and continuously adjustable temperature range, so users can adjust the temperature according to their needs. The configuration of the refrigerator makes full use of the effective space of the refrigerator, and at the same time realizes the optimal combination of continuously adjustable temperature and wide temperature adjustment range.

In order to achieve the above-mentioned purpose of the invention, the utility model adopts the following technical solutions.

The utility model discloses a three-system wind and direct cooling refrigerator, which comprises three refrigerator compartments. The refrigerator is provided with a refrigeration circulation system formed by a compressor, a condenser and an evaporator sequentially connected by pipelines. The refrigerator compartments are respectively An evaporator is provided, and the refrigeration cycle system is controlled by a control circuit, which is characterized in that,

At least one refrigerator compartment is refrigerated by an air-cooling method in which a fan is installed in the air duct communicating with the evaporator to blow cold air into the refrigerator compartment;

The rest of the refrigerator compartments are refrigerated by direct cooling in which the evaporator is directly refrigerated.

Usually, the refrigerator is equipped with refrigeration and freezing functions. In order to provide the usual refrigeration and freezing functions of the refrigerator, and at the same time improve the effective use of space of the refrigerator, one of the refrigerator compartments is cooled by air cooling, and the other two refrigerator compartments are cooled by direct cooling. Refrigeration.

In the present utility model, the three compartments of the refrigerator can be freely arranged in the upper, middle and lower compartments, preferably:

The air-cooled refrigerator is arranged in the middle, and the direct-cooled refrigerator compartment is arranged at the upper and lower parts of the air-cooled refrigerator compartment.

In order to realize random configuration of refrigerator functions according to the needs of refrigerator users, the temperature of at least one refrigerator compartment is controlled by a control circuit, and can be continuously adjusted from refrigerating temperature to freezing temperature. The refrigerator compartment with continuously adjustable temperature provides greater flexibility for refrigerator users, making the refrigerator more free and convenient to use.

In order to realize the refrigeration cycle of the three compartments of the refrigerator, the evaporators of the three compartments of the refrigerator can be configured as required, preferably: the evaporators of the three compartments of the refrigerator are connected in parallel. The evaporators are connected in parallel with each other, and through the control of the stop valve, one or more of the evaporators can be connected arbitrarily, and different evaporators are respectively controlled to cool the corresponding refrigerator compartments.

At the same time, the refrigerating system may be preferably: the two refrigerator compartment evaporators are connected in parallel with a connecting pipeline and then connected in series with another evaporator. After the two evaporators are connected in parallel, they are connected in series with the other evaporator, so that the refrigerant that passes through the parallel evaporator is further passed through the evaporator connected in series and then returned to the compressor for compression, thus saving the energy of the refrigeration system. When the evaporator connected in parallel with the pipeline does not need to cool its corresponding refrigerator compartment, it is closed by the stop valve, and the series evaporator is separately connected through the parallel pipeline, so that it can realize One evaporator can be switched off without affecting the cooling function of the remaining refrigeration cycle.

Through a certain configuration of the refrigerator evaporator, through the control of the control circuit, the temperature of the direct cooling and air-cooling refrigerator compartments can be continuously adjusted. Since the temperature of the direct cooling method changes slowly, in order to realize the optimal setting of the refrigerator, the above-mentioned The air-cooled refrigerator compartment is continuously adjustable from refrigerating temperature to freezing temperature.

Description of drawings

Figure 1 is the front view of the three-system wind and direct cooling refrigerator.

Fig. 2 is a sectional view along A-A in the figure.

Fig. 3 is a schematic diagram of the connection relationship of the refrigeration systems of the three-system air-cooled refrigerator and the direct-cooled refrigerator.

Detailed ways

As shown in Figure 1, the three-system wind and direct cooling refrigerator 1, the refrigerator 1 is provided with three refrigerator compartments, the temperature range of the upper part is controlled at 5 ~ -5 ℃ refrigerating room 2, and the temperature range of the lower part is controlled at -18 ℃ In the following freezer compartment 3, the middle part is a temperature-changing compartment 4 with a continuously adjustable temperature range of 5 to -18°C. As shown in Figure 2, the freezer compartment is surrounded by a side wall 21, a rear wall 22, a top wall 23 and a bottom wall 24 , Freezing chamber 2 and temperature-changing chamber 4 are surrounded by side wall, rear wall, top wall and bottom wall equally. As shown in Figure 1, switchable door bodies 20, 30, 40 are respectively provided with switchable door bodies 20, 30, 40 at the front parts of the refrigerator compartment 2, the freezer compartment 3, and the temperature-changing compartment 4, and handles 200, 300 are respectively arranged on the door bodies 20, 30, 40. and 400.

As shown in Figure 2, a refrigerating room evaporator 29 is arranged on the back wall of the refrigerating room 2, a variable temperature evaporator 49 is set on the back wall of the changing room 4, and three freezer room evaporators 39 are set in the freezing room 3. , The evaporator is directly installed in the freezer, which can make the refrigeration direct and the refrigeration effect is good. The refrigerating room 2 and the freezing room 4 control the operation of the refrigeration system through the control circuit, and the evaporators 29 and 39 arranged in the rear wall respectively cool the refrigerating room and the freezing room, that is, the refrigerating room 2 and the freezing room 3 are refrigerated by direct cooling. . At the same time, an air passage part 48 is arranged on the rear wall of the variable room 4, and an air supply fan 47 is installed in the air channel 48. An air supply port 46 is arranged on the upper part of the rear wall of the variable room 4, and a return fan is arranged on the lower part of the rear wall of the variable room. The tuyere 45, when the evaporator is cooling, the fan 47 blows the cold air refrigerated by the evaporator 49 into the variable room 4 from the air supply port 46, and returns to the air duct 48 through the air return port 45, so that the reciprocating cycle will turn the temperature in the variable room. food cooling.

Fig. 3 has shown a kind of concrete implementation of the refrigeration system that refrigerator 1 adopts, and refrigeration system comprises the compressor 5 that connects successively through pipeline, dew pipe 6, condenser 7 and filter 13, after the refrigeration medium passes through filter 13 , divided into three paths through pipelines, after the variable temperature evaporator 49 is connected in parallel with the refrigerating chamber evaporator 29 and the circulation pipeline 8, it is connected in series with the freezing chamber evaporator 39, and the freezing chamber evaporator 39 is connected with the compressor. Electromagnetic valves 10 and 11 are respectively arranged at the evaporator and the pipeline branch.

When the refrigerator 1 is in the refrigeration cycle, the refrigerant compressed by the compressor 5 releases heat and condenses in the condenser, and then branches at the electromagnetic valves 10 and 11. When the refrigerator needs cooling, the electromagnetic valves 10 and 11 lead to the refrigerator. The evaporator 29 closes other circulation loops, the refrigeration system refrigerates the refrigerating chamber, and the refrigerating medium flowing through the evaporator 29 of the refrigerating chamber further flows through the evaporator 39 of the freezing chamber to refrigerate the freezing chamber. When the freezer needs to be refrigerated, the electromagnetic valve 10 closes the circulation pipeline of the freezer, the electromagnetic valve 11 closes the temperature-changing evaporator 49, and leads the pipeline 8, and the refrigeration system only refrigerates the freezer. When the variable room needs to be refrigerated, the solenoid valves 10 and 11 are connected to the variable room evaporator 49 and other circulation loops are closed, and the refrigeration system refrigerates the variable room, and the refrigerating medium flowing through the variable room evaporator 49 further flows through the freezing room evaporator 39 Cool the freezer. By analogy, through the solenoid valves 11 and 10 controlling the conduction and closing of different pipelines, the refrigeration system can respectively refrigerate one or more of the refrigerating chamber, variable temperature chamber and freezing chamber to achieve accurate temperature control. The refrigerator and freezer are refrigerated by the direct cooling method of direct cooling by the evaporator, which effectively utilizes the space of the refrigerator, and the air-cooling method of the air duct structure is used in the variable temperature room, which can be adjusted in a wide range from 5 to -18°C through the control circuit The temperature of the greenhouse can be changed to meet the needs of different consumers for different temperature configurations of the refrigerator, and the use of the refrigerator is more flexible.

In the utility model, in order to realize the closure of the refrigerant medium in the circulation circuit, it can be realized by using an electronic throttle valve or setting capillaries on different pipelines. In order to realize separate circulation of different evaporators, each evaporator can be connected in parallel with each other, and refrigeration control can also be realized through the control of the stop valve set at the branch of the connecting pipeline.

Claims (7)

1. A three-system wind and direct-cooling refrigerator, including three refrigerator compartments. A refrigeration cycle system formed by a compressor, a condenser and an evaporator connected in sequence by pipelines is arranged in the refrigerator, and the refrigerator compartments are respectively provided with evaporators. device, the refrigeration cycle system is controlled by a control circuit, and it is characterized in that, At least one refrigerator compartment is refrigerated by an air-cooling method in which a fan is installed in the air duct communicating with the evaporator to blow cold air into the refrigerator compartment; The rest of the refrigerator compartments are refrigerated by direct cooling in which the evaporator is directly refrigerated. 2. The three-system wind and direct cooling refrigerator according to claim 1, characterized in that: One refrigerator compartment is cooled by air cooling, and the other two refrigerator compartments are cooled by direct cooling. 3. The three-system wind and direct cooling refrigerator according to claim 2, characterized in that: The air-cooled refrigerator is arranged in the middle, and the direct-cooled refrigerator compartment is arranged at the upper and lower parts of the air-cooled refrigerator compartment. 4. The three-system wind and direct cooling refrigerator according to claim 1, 2 or 3, characterized in that: The temperature of at least one compartment of the refrigerator is controlled by a control circuit, and is continuously adjustable from refrigerating temperature to freezing temperature. 5. The three-system wind and direct cooling refrigerator according to claim 1, characterized in that: The evaporators in the three refrigerator compartments are connected in parallel. 6. The three-system wind and direct cooling refrigerator according to claim 1, characterized in that: The two refrigerator compartment evaporators are connected in parallel with a connecting pipeline and then connected in series with another evaporator. 7. The three-system wind and direct cooling refrigerator according to claim 4, characterized in that: The air-cooled refrigerator compartment is continuously adjustable from refrigerating temperature to freezing temperature.

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