CN201203320Y - Indirect cooling three-door three-temperature zone refrigerator - Google Patents

Abstract

The utility model provides an indirect cooling type refrigerator with three doors and three temperature zones, which includes a controller, a compressor, a condenser, an evaporator, a fan, a box door and a box body. , in which, the refrigerating room, variable temperature room and freezing room are arranged sequentially from top to bottom, and the compressor, condenser and an evaporator constitute a refrigeration cycle system, which consists of a fan and a circulating air duct leading to the refrigerating room, variable temperature room and freezing room Form a cold air circulation system. Using a single fan with multi-channel circulating air ducts improves the efficiency of the fan and simplifies the setting of the air supply mechanism; uses a controllable damper to control the circulation of cold air, taking into account the balance of the system and meeting the requirements of separate control of multiple temperature zones.

Description

Indirect cooling three-door three-temperature zone refrigerator

technical field

The utility model relates to an indirect cooling type refrigerator with three doors and three temperature zones.

Background technique

Commonly known as refrigerators and freezers, it generally refers to double-door double-temperature, three-door three-temperature, and cabinet-type multi-door refrigerators. Generally, it has an independent outer door of the freezer, and the volume of the freezer is also relatively large, about 1/4 to 1/2 of the total volume, which can store more frozen food. Some refrigerators also have compartments and doors so that they can be stored separately according to different storage temperatures of food.

The refrigeration principle of this refrigerator-freezer is divided into direct cooling and indirect cooling. Direct-cooling refrigeration systems often use solenoid valves to control the flow of refrigerant, and supply refrigerant to the evaporators of each refrigerating (freezing) room to cool each space to the required temperature. Usually, double-door, double-temperature, double-control refrigerators use two-position three-way solenoid valves to control the refrigerant supplied to the refrigerator and freezer compartments respectively; intercooled refrigerator-freezers need to be equipped with corresponding air ducts to supply air to each space.

Along with the raising of people's living standard, people have put forward higher requirement to refrigerator, as: in order to make refrigerator better able to adapt to the cold storage of various food, add ice greenhouse (fruit room, vegetable room) on refrigerator, use For refrigerated fruits, vegetables and other foods with a slightly higher refrigerated temperature. Therefore, a direct-cooling refrigerator with three doors and three temperature zones has appeared in which a compressor supplies refrigerant separately. In order to realize the separate cooling of the three chambers, it is necessary to use one-inlet and three-outlet solenoid valves to control the flow of refrigerant separately. Due to the increase of control channels, it is difficult to achieve a single reciprocating valve core. Therefore, the existing refrigerators use one-inlet and three-outlet solenoid valves, and most of them use rotary valves. The structure is that there are three outlets on the valve wall. The stepping motor controls the rotation of the spool. When the spool rotates to a certain angle, one of the outlet pipes communicates with the inlet pipe, and the other two are closed, so as to respectively control the three channels connecting the three chambers. However, the structure of the rotary valve is complicated, and the processing precision is extremely high. Not only is the manufacturing process complicated, but the current domestic processing technology is difficult to achieve. , the control circuit is complicated, so the manufacturing cost is higher.

For the three-door and three-temperature zone refrigerators with indirect cooling structure, the structure of multi-evaporator and multi-fan control respectively is adopted to solve the problem of refrigeration cycle and control. This design complicates the structure, increases the manufacturing cost and reduces the efficiency.

In view of the above problems, the utility model is proposed.

Utility model content

The purpose of the utility model is to provide an indirect cooling type refrigerator with three doors and three temperature zones, which can realize refrigeration cycle and control without using multiple evaporators and multiple blowers to control separately.

The utility model provides an indirect cooling type refrigerator with three doors and three temperature zones, which includes a controller, a compressor, a condenser, an evaporator, a fan, a box door and a box body. , in which, the refrigerating room, variable temperature room and freezing room are arranged sequentially from top to bottom, and the compressor, condenser and an evaporator constitute a refrigeration cycle system, which consists of a fan and a circulating air duct leading to the refrigerating room, variable temperature room and freezing room Constitutes a cold air circulation system.

Using a single fan with multi-channel circulating air ducts improves the efficiency of the fan and simplifies the setting of the air supply mechanism; uses a controllable damper to control the circulation of cold air, taking into account the balance of the system and meeting the requirements of separate control of multiple temperature zones.

The preferred evaporator of the utility model is arranged at the rear of the freezer.

In this way, this facilitates the arrangement of the air duct in space.

The preferred fan of the utility model is located at the rear of the variable room, above the evaporator.

Since the temperature increases after the cold air exchanges heat with the evaporator, this setting can make full use of the fact that the air with high temperature is easy to flow upwards and save power.

The utility model is preferably equipped with a variable temperature room air door with an adjustable opening for adjusting the air intake on the circulating air duct leading to the refrigerator room and the variable temperature room.

The temperature control of the storage room of the refrigerator can be realized by adjusting the opening degree of the air door of the variable room.

In the utility model, the damper of the variable temperature room preferably includes a damper seat and a rotatable windshield disposed on the damper seat, and one end of the rotatable windshield is provided with a transmission part connected with the control part.

Through the control of the transmission part by the control part, the control of the opening of the damper can be realized.

In the utility model, temperature sensors for detecting the respective indoor temperatures are preferably arranged in the freezer compartment, the cold storage compartment and the temperature-changing compartment.

In this way, the respective indoor temperatures can be monitored in real time, and temperature adjustments can be made according to the detected temperatures.

The utility model preferably leads to the refrigerated room, the variable room, and the circulating air duct of the freezing room to be relatively independent.

In this way, the airflows in the respective air ducts are relatively independent and do not affect each other.

The utility model preferably leads to the refrigerated room, the variable temperature room, and the circulating air duct of the freezing room to be formed by composite lapping.

This helps to save space.

In the utility model, the air duct is preferably arranged outside the cavity formed by the inner tank and the casing shell.

This makes the process simple and easy to maintain.

In the utility model, the cross section of the circulating air duct is preferably roughly rectangular.

This facilitates spatial arrangement.

Because the utility model uses one evaporator in freezing, refrigerating, and temperature-changing work, and utilizes the circulation air duct formed by the fan, air duct and damper of the utility model, it can adjust the air intake volume of each indoor space to achieve the required temperature.

In addition, the utility model separates the soft freezer from the refrigerating room to form a separate space, which realizes its temperature changing function completely independently. The temperature of the drawer-type variable room can be continuously adjusted from -18°C to 10°C.

Description of drawings

Fig. 1 is a front view showing the overall structure of the utility model indirect cooling type refrigerator with three doors and three temperature zones.

Fig. 2 is a side view showing the overall structure of the indirect cooling type refrigerator with three doors and three temperature zones of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

As shown in FIGS. 1 and 2 , a refrigerator 1 has a refrigerating chamber 2 , a variable temperature chamber 3 and a freezing chamber 4 , and the variable temperature chamber 3 is arranged between the refrigerating chamber 2 and the freezing chamber 4 . Refrigerator 1 also has an evaporator 5 and a blower fan 6, and evaporator 5 is arranged on the rear portion of freezing chamber 4, and blower fan 6 is arranged on the rear portion of temperature-changing chamber 3, the top of evaporator 5.

In the utility model, a compressor (not shown), a condenser (not shown) and an evaporator 5 form a refrigeration cycle system, a fan 6 and the circulating air leading to the refrigerating room 2, the variable room 3 and the freezing room 4 The channel constitutes a cold air circulation system.

When working, the compressor promotes the circulation of the refrigerant, and the refrigerant entering the evaporator 5 absorbs heat and evaporates, and the fan 6 sends the cold air to the corresponding chamber through the circulating air duct. That is, the cold air enters the cold room and the cooling room through the freezing room.

The flow path of the airflow is shown by the arrow in the figure.

The freezer compartment 4 has a freezer compartment air outlet 11 and a freezer compartment air return port 12. The fan 6 sends cold air to the freezer compartment 4 through the freezer compartment air outlet 11, and the cold air returns through the freezer compartment return air port 12 after heat exchange in the freezer compartment 4. The air duct flows upwards and exchanges heat with the evaporator 5. As shown in FIG. 1 , four freezer compartment air outlets 11 are separately arranged on the rear side of the inner container of the freezer compartment 4 .

The mixed air after the heat exchange enters the variable room 3 through the air inlet 13 of the variable room. The temperature-changing room air inlet 13 is provided with one, is arranged on the center of the upper part of the rear side of the temperature-changing room 3 liners, which is beneficial to the flow of cold wind, and certainly the temperature-changing room air inlet 13 can also be arranged on other positions. The variable room air inlet 13 is provided with a variable room damper 16 . The temperature-changing air door 16 is a control air door with an adjustable opening. It includes a damper seat and a rotatable windshield arranged on the damper seat, and one end of the rotatable windshield is provided with a transmission part connected with the control part. The user can adjust the opening degree of the variable temperature door 16 according to the temperature.

The variable room 3 also has a variable room air outlet 14 and a variable room air return port 15 . A part of the air-flow in the temperature-changing room 3 enters the air duct through the air outlet 14 of the temperature-changing room, and the other part enters the freezing chamber 4 through the air return port 15 of the temperature-changing room. There are four variable room air outlets 14, which are arranged separately on the upper part of the variable room air inlet 13 on the top of the variable room 3, so that the heat exchanged air flow in the variable room 3 can be reduced by using the principle that the hot air is easy to rise. It is discharged from the changing chamber 3. The return air outlet 15 of the temperature-changing room is arranged on a lower corner of the inner bag rear side of the temperature-changing room 3 , which is beneficial to making cooler air flow enter the freezing room 4 .

In addition, the cooling room 3 is also provided with a refrigerating room air inlet 17 , which is located near the upper one of the changing room air outlets 14 , and is used to guide cold air to the refrigerating room 2 .

Connected with the refrigerated air inlet 17, a refrigerated room air inlet duct 20 is provided in the refrigerated room 2, and a refrigerated room damper 19 is provided at the bottom of the refrigerated room air intake duct 20, and the refrigerated room damper 19 is an adjustable opening control The damper is identical in structure with the temperature-varying greenhouse damper 16. The user can adjust the opening degree of the damper 19 of the refrigerating chamber according to the temperature.

In addition, the refrigerating room 2 is provided with a refrigerating room return air outlet 18 , and the refrigerating room return air opening 18 is arranged at a lower corner of the inner container rear side of the refrigerating room 2 . The cold air enters the return air outlet 18 of the refrigerating chamber after heat exchange in the refrigerating chamber 2 , and enters the freezing chamber 4 through the air duct.

As described above, the air flow completes one cycle in the refrigerator 1 .

In this embodiment, the circulating air ducts leading to the refrigerating room 2, the temperature changing room 3, and the freezing room 4 are relatively independent. Of course, it can also be composed of composite lap joints, that is, one pipe is used for the circulating air duct connecting different storage rooms. For example, the air duct that makes air flow enter the freezer compartment 4 from the return air outlet 15 of the temperature-changing room and the air duct that enters the freezer compartment 4 from the return air outlet 18 of the refrigerator compartment can adopt a pipeline, which has no impact on the realization of the present utility model.

In this embodiment, there is a damper on the circulating air duct leading to the refrigerating room 2 and the changing room 3 . Certainly also can have damper on the circulating air duct leading to freezer compartment 4.

In this embodiment, the cross-sectional shape of the air duct is substantially rectangular, and of course it may also be circular or square.

In addition, temperature sensors (not shown) for detecting the respective indoor temperatures are provided in the refrigerator compartment 2, the freezer compartment 3, and the variable temperature compartment 4. Controller (not shown) according to the signal that the temperature sensor that is installed in refrigerating room 2, changing room 3 and freezer room 4 transmits, adjusts the damper opening degree that is located on refrigerating room 2 and changing room 3 circulating air ducts and compressor Working conditions, so that the entire system maintains the set state.

Through the composition of the above embodiment, the utility model can provide a temperature-changing room freely adjustable between 10°C and -18°C.

In addition, the utility model adopts the direct connection of a single compressor and a single evaporator, which simplifies the setting of the evaporator and the control circuit of the refrigerant.

The utility model is not limited to the structures described in the above embodiments, and the utility model can be modified arbitrarily within the scope of the technical idea. As long as its technical ideas are within the scope of the utility model, it all falls into the technical protection scope of the utility model.

Claims (10)

1. three three-temperature-zone refrigerators of an indirect-cooling, comprise evaporimeter (5), blower fan (6) and casing, be divided into refrigerating chamber (2), temperature-changing chamber (3) and refrigerating chamber (4) in the casing, it is characterized in that: refrigerating chamber (4) is arranged on the lower side, compressor, condenser and an evaporimeter (5) constitute cooling cycle system, by a blower fan (6) with lead to the circulation air path formation cold air circulating system of refrigerating chamber (2), temperature-changing chamber (3), refrigerating chamber (4).

2. three three-temperature-zone refrigerators of indirect-cooling as claimed in claim 1 is characterized in that: described evaporimeter (5) is arranged on the rear portion of described refrigerating chamber (4).

3. three three-temperature-zone refrigerators of indirect-cooling as claimed in claim 1 is characterized in that: described blower fan (6) is located at the rear portion of described temperature-changing chamber (3), is positioned at the top of evaporimeter (5).

4. three three-temperature-zone refrigerators of indirect-cooling as claimed in claim 1 is characterized in that: the temperature-changing chamber air door (16) that is provided with the regulated aperture that is used to regulate intake on the circulation air path that leads to described refrigerating chamber (2), temperature-changing chamber (3).

5. three three-temperature-zone refrigerators of indirect-cooling as claimed in claim 1, it is characterized in that: described temperature-changing chamber air door (16) comprises the air door seat, is located at rotatable blinker on the air door seat, and an end of this rotatable blinker is provided with the driving section that is connected with control part.

6. three three-temperature-zone refrigerators of indirect-cooling as claimed in claim 1 is characterized in that: be provided with in described refrigerating chamber (4), refrigerating chamber (2) and the temperature-changing chamber (3) and detect the temperature sensor of indoor temperature separately.

7. three three-temperature-zone refrigerators of indirect-cooling as claimed in claim 1 is characterized in that: the circulation air path that leads to described refrigerating chamber (2), temperature-changing chamber (3), refrigerating chamber (4) is relatively independent.

8. three three-temperature-zone refrigerators of indirect-cooling as claimed in claim 1 is characterized in that: the compound overlap joint of circulation air path that leads to described refrigerating chamber (2), temperature-changing chamber (3), refrigerating chamber (4) forms.

9. three three-temperature-zone refrigerators of indirect-cooling as claimed in claim 1 is characterized in that: described air channel is arranged on the outside of the cavity of inner bag and cabinet shell formation.

10. three three-temperature-zone refrigerators of indirect-cooling as claimed in claim 1, it is characterized in that: the cross section of described circulation air path is roughly rectangular.

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