CN1186214A - refrigerator - Google Patents

Abstract

A refrigerator in which a compressor 23 is started to operate when any one of the temperature sensor for the freezing chamber 5 and the temperature sensor for the specification switching chamber 4 detects a temperature higher than the set temperature for power-on, and the two temperature sensors When the temperature below the shutdown setting temperature is detected, the operation of the compressor 23 is stopped. In the refrigerator of the present invention, when the standard switching chamber is set to the freezing standard, good temperature control can be performed on both the standard switching chamber and the freezing chamber.

Description

refrigerator

The present invention relates to a refrigerator having a freezer compartment and a specification switching compartment capable of setting the storage temperature in a plurality of storage temperature zones including the freezing temperature zone.

Recently, there is a refrigerator that has a specification switching chamber that can set a storage temperature in a plurality of storage temperature zones including a freezing temperature zone. In this type of refrigerator, the compressor that starts the refrigerating cycle starts when the temperature sensor for the freezer detects the start-up set temperature, and stops when it detects the turn-off set temperature. And in order to control the standard switching chamber at the temperature of the set standard, the control device is a damper device for supplying cool air to the standard switching chamber by opening and closing based on the detected temperature of the standard switching chamber temperature sensor.

However, when this temperature control structure is adopted, the operation of the compressor is only controlled according to the temperature of the freezer compartment. Therefore, in winter and other low temperature conditions, once the compressor is running, the temperature of the freezer compartment can be lowered to shutdown in a short time. Set the temperature and the compressor runs for a short time. In this way, especially when the standard switching chamber is set to the freezing standard, the compressor may stop operating before cooling to the necessary freezing temperature.

In addition, if the temperature sensor for the freezer compartment or the specification switching compartment fails, the compressor will not operate, which may affect the preservation of food.

In view of the above circumstances, an object of the present invention is to provide a refrigerator which can control the temperature of the freezer compartment and the specification switching compartment well, and even when the temperature sensor for the freezer compartment and the temperature sensor for the specification switching compartment are abnormal. Minimize adverse effects on food preservation.

In order to achieve the above object, the first technical solution of the present invention is a refrigerator, which has:

Freezer room, storage temperature switchable room that can set the storage temperature in multiple storage temperature ranges including the freezing temperature range, temperature sensor for the freezer room that detects the temperature in the aforementioned freezer room, and a size switchable room that detects the temperature in the aforementioned size switchable room a temperature sensor, a damper device for controlling the supply of cool air from the cooler to the specification switching chamber, a control device for controlling the compressor and the damper device based on the temperature detected by the temperature sensor,

aforementioned control device

In the case where the standard switching room is set to the freezing standard, the compressor is started to operate when any one of the temperature sensor for the freezing room and the temperature sensor for the standard switching room detects a temperature above the power-on setting temperature. When both sensors detect a temperature below the shutdown setting temperature, the operation ends, and the aforementioned damper device is opened when the temperature sensor for the aforementioned specification switching chamber detects a temperature above the startup setting temperature. shutdown at temperatures below,

In the case where the specification switching chamber is set to a specification other than the freezing specification, the compressor starts to operate when the temperature sensor for the freezing chamber detects the start-up set temperature, and stops running when the shutdown set temperature is detected, and at the same time The damper device is opened when the temperature sensor for the specification switching chamber detects a temperature higher than the preset temperature for power-on, and closed when a temperature lower than the preset temperature for shutdown is detected.

The second technical solution of the present invention is that the aforementioned control device

In the case where the aforementioned specification switching chamber is set to a freezing specification, the aforementioned compressor is started to run when both the temperature sensor for the freezing compartment and the temperature sensor for the specification switching chamber detect a temperature above the power-on setting temperature, and When each temperature sensor detects a temperature below the shutdown setting temperature, the operation ends, and at the same time, the aforementioned damper device is opened when the temperature sensor in the aforementioned specification switching chamber detects a temperature above the startup setting temperature, and when the shutdown setting temperature is detected. shutdown at temperatures below,

In the case where the specification switching chamber is set to a specification other than the freezing specification, the compressor starts to operate when the temperature sensor for the freezing chamber detects the start-up set temperature, and stops running when the shutdown set temperature is detected, and at the same time The damper device is opened when the temperature sensor for the specification switching chamber detects a temperature higher than the preset temperature for power-on, and closed when a temperature lower than the preset temperature for shutdown is detected.

By adopting the above-mentioned structure, when the standard switching room is a freezing specification, the compressor does not stop running when only the temperature sensor for the freezing room detects a temperature below the shutdown setting temperature, and only the temperature sensor for the freezing room and the standard switching room Both temperature sensors stop running when they detect a temperature below the shutdown set temperature, so there will be no insufficient cooling of the specification switching room.

In the third technical solution of the present invention, in order to deal with the abnormal situation of the temperature sensor for the freezing room and the temperature sensor for the specification switching room,

When any one or both of the above-mentioned temperature sensors for the freezer and the temperature sensor for the specification switching room are abnormal,

aforementioned control device

When the specification switching chamber is set to the refrigeration specification, the compressor is operated while the damper device is opened,

On the other hand, when the standard switching chamber is set to a standard other than the refrigeration standard, the compressor is operated while the damper device is closed.

By adopting the above-mentioned structure, when the temperature sensor for the freezing room and the temperature sensor for the standard switching room are abnormal, when the standard switching room is of the freezing standard, the compressor operates and the damper device is in an open state, so the temperature of the freezing room and the standard switching room Frozen food will not be defrosted. In addition, when the specification switching chamber is of a specification other than the freezing specification, the compressor runs and the damper device is closed, so the frozen food in the freezing chamber will not be thawed, and the food in the specification switching chamber will not be frozen.

The following is a brief description of the accompanying drawings.

Fig. 1 is a front view of an embodiment of the present invention.

Fig. 2 is a longitudinal sectional side view.

Fig. 3 is a longitudinal sectional side view of a size switching chamber.

FIG. 4 is a circuit configuration diagram.

Fig. 5 is a diagram illustrating changes in detected temperatures of two temperature sensors used in other embodiments of the present invention.

An embodiment of the present invention will be described below with reference to FIG. 1 to FIG. 4 .

In Fig. 1 and Fig. 2 showing the refrigerator as a whole, in the refrigerator main body 1, as a storage room, from top to bottom, there are refrigerating room 2, left and right side by side ice making room 3 and specification switching room 4, freezing room 5, The vegetable compartment 6 is opened and closed by the doors 7-11 of the respective compartments 2-6, respectively. Among the above-mentioned respective chambers 2-6, the ice-making chamber 3 and the freezing chamber 5 are in the same temperature zone, so the chambers 3 and 5 communicate with each other.

The cooling structure of each of the above-mentioned chambers 2 to 6 will be described below. At the rear of the mutually connected ice-making chamber 3 and freezing chamber 5, a cooler chamber 13 isolated from the freezing chamber 5 is formed with a cover 12. The air cooled by the cooler 14 in 13 is first sent to the air supply path 16 formed inside the cover 12 by the fan device 15 . And a part of the cold air sent into the air supply path 16 is supplied to the ice making compartment 3 and the freezer compartment 5 from the air outlets 17a, 17b formed on the front portion of the cover body 12, and the remaining cold air then passes through the air supply path 16 according to the specification. Switch the damper device 18 shown in FIG.

The cold air supplied to the ice-making compartment 3, the freezer compartment 5, and the standard switching compartment 4, and the cold air supplied from the refrigerator compartment 2 to the vegetable compartment 6 are then returned to the cooler compartment 13, where they are cooled again by the cooler 14, thus circulating in the refrigerator. In addition, a damper (not shown) for controlling the supply of cold air to the refrigerator compartment 2 and a damper 18a for controlling the supply of cold air to the specification switching chamber 4 are provided in the damper unit 18, and these are controlled to open and close by a motor 18b.

In the above-mentioned storage room, the standard switching room 4 constitutes a cooling room whose storage temperature (cooling temperature) can be changed in a wide range, and its storage temperature can be changed to freezer room, local freezer room, cooling room, refrigerator room and vegetable room. A temperature zone of various specifications. In order to switch the standard switching chamber 4 to a desired standard, a variable resistor 20 is provided on the operating panel 19 in the refrigerator compartment 2 as a switching device for setting the temperature (standard) of the standard switching chamber 4 .

As shown in Figure 4, the resistor 20a of the variable resistor 20 is connected in series with another resistor 21, and is connected between the positive power supply +Vcc and the ground, corresponding to the position of the slider 20b of the variable resistor 20 The voltage is input to a microcomputer 22 as a control device. The microcomputer 22 detects the standard set in the standard switching chamber 4 based on the input voltage from the variable resistor 20 . The storage temperature range of each specification can be, for example: -23°C to -12°C for the freezer, -4.5°C to -1°C for the partial freezer, -1°C to +3°C for the cooling room, and -1°C to +3°C for the refrigerator. Specifications and vegetable room specifications are +3°C to +5°C.

The temperature control structure of each chamber 2 to 6 will be described below. First, the temperature of the freezer chamber 5 is controlled through the operation control of the compressor 23 of the refrigeration cycle, and the refrigerating chamber 2 and the refrigerating chamber 2 are controlled by opening and closing the baffles of the damper device 18 respectively. Specification switching chamber 4 temperature. The temperature control structures of the standard switching chamber 4 and the freezing chamber 5 directly related to the present invention will be described below.

That is, the refrigerator main body 1 is provided with a standard switching chamber temperature sensor 24 and a freezing chamber temperature sensor 25 that detect the temperatures in the standard switching chamber 4 and the freezer compartment 5 . These temperature sensors 24, 25 are composed of, for example, negative characteristic thermistors. As shown in FIG. Microcomputer 22.

On the other hand, the motor 23a of the compressor 23 and the motor 18b used to open and close the side baffle 18a of the standard switching chamber 4 of the damper device 18 are connected in series with the relay switches 29 and 30 as drive devices, and are connected to the AC power supply 28. connect. The microcomputer 22 performs on-off control of the relay coils 29a, 30a of the relay switches 29, 30 according to the detected temperature of the above-mentioned temperature sensors 24, 25 and a preset program. Also, the fan unit 15 is not shown in FIG. 4 , and its operation and stop are synchronized with the operation and stop of the compressor 23 as described above.

In this configuration, once the relay coil 29a is energized, its relay switch 29 is turned on, and the compressor 23 is operated. And once the relay coil 30a is energized, its relay switch 30 is just connected, so the motor 18b of the damper device 18 is energized, and the baffle plate 18a of the specification switching chamber 4 is made to open and close.

In this case, the cam (not shown) rotated by the motor 18b causes the shutter 18a of the damper 18 to open and close, and the open and close state is detected by the detection switch 31 . The detection switch 31 is turned from off to on when the shutter 18 a is opened, and from on to off when it reaches the fully open position, and the on-off signal of the detection switch 31 is input to the microcomputer 22 . The microcomputer 22 compares the detection temperature of the temperature sensor 24 for the standard switching chamber with the cooling temperature set by the variable resistor 20 for the standard setting, and controls the opening and closing of the damper 18a of the damper device 18 so that The specification switching chamber 4 maintains the set temperature.

The microcomputer 22 of the present embodiment has a function of detecting abnormality of the temperature sensors 24 and 25 . Here, the abnormality of the temperature sensors 24 and 25 is mainly caused by a disconnection of the voltage dividing circuit composed of the temperature sensors 24 and 25 and the resistors 26 and 27, or a short circuit with the positive power supply +Vcc and ground. When this type of abnormality occurs, the voltage divider circuit forms a high impedance state, or outputs the potential of the positive power supply +Vcc or the potential of the ground wire, so the microcomputer 22 will When the above-mentioned state caused by disconnection or short circuit is detected by the input of the voltage circuit, it is judged that the sensor is abnormal (sensor abnormality judging device).

And this sensor abnormality is notified to the user by, for example, a light-emitting diode 32 provided on the front of the door 7 of the refrigerator compartment 2 as an abnormality warning device. The light emitting diode 32 is connected in series with a transistor between the positive power supply +Vcc and the ground, and when the microcomputer 22 detects an abnormality in the sensor, it turns on the transistor so that the light emitting diode 32 emits light.

In addition, although not shown in the figure, a temperature sensor for detecting the internal temperature is also provided in the refrigerator compartment 2, and the microcomputer 22 controls the temperature sensor of the damper device 18, which is not shown, based on the temperature detected by the temperature sensor for the refrigerator compartment. The refrigerating chamber uses a baffle to carry out opening and closing control, so that the refrigerating chamber 2 maintains the refrigerated temperature.

The operation of temperature control of the standard switching chamber 4 and the freezing chamber 5 in the above-mentioned structure will be described below.

First, the microcomputer 22 detects whether there is a sensor abnormality at a constant cycle, and performs normal control when both temperature sensors 24 and 25 are functioning normally, and performs emergency control when it is judged that the sensor is abnormal. Different occasions are described below.

(1) Normal control

a) When the specification switching chamber 4 is a freezing specification

At this time, the microcomputer 22 starts the operation of the compressor 23 when any one of the temperature sensor 24 for the specification switching chamber and the temperature sensor 25 for the freezing chamber detects the set temperature at startup, and the temperature is detected by both the temperature sensors 24 and 25. Make compressor 23 shut down when shutting down and setting temperature. And the start-up set temperature and the shutdown set temperature of the two temperature sensors 24 and 25 are different. For example, the set-up temperature of the temperature sensor 24 for setting the specification switching chamber is -19° C., and the shutdown set temperature is -21° C. , the temperature sensor 25 for the freezer compartment is set to have a power-on set temperature of -20° C. and a power-off set temperature of -24.5° C.

Once any one of the standard switching chamber 4 and the freezing chamber 5, for example, the temperature in the freezing chamber 5 rises above the set temperature and the freezing chamber detects this temperature with the temperature sensor 25, the microcomputer 22 starts the compressor 23 and the fan immediately. Operation of device 15. In this way, the air cooled by the cooler 14 is directly supplied to the ice making compartment 3 and the freezing compartment 5 through the fan unit 15, and the two compartments 3 and 5 are cooled. During the operation of the compressor 23, once the temperature in the specification switching chamber 4 reaches above the start-up set temperature and the temperature sensor 24 in the specification switching chamber detects this temperature, the microcomputer 22 will make the baffle plate 18a of the damper device 18 Make an opening action. In this way, the cold air supplied to the air supply path 16 by the fan unit 15 is supplied to the specification switching chamber 4 through the damper unit 18 to cool the chamber 4 .

In addition, in the specification switching chamber 4 and the freezer compartment 5, when the temperature of the specification switching chamber 4 first rises above the start-up set temperature, the microcomputer 22 starts the operation of the compressor 23 according to the detected temperature of the specification switching chamber temperature sensor 24. At the same time, the baffle plate 18a of the damper device 18 is opened. In this way, the air cooled by the cooler 14 is directly supplied to the ice making compartment 3 and the freezing compartment 5 through the fan unit 15 , and is also supplied to the specification switching compartment 4 through the damper unit 18 . In this case, although the cold air is supplied to the freezer compartment 5 at a temperature below the power-on setting temperature, it only further cools the frozen food, and does not have any adverse effect on the frozen food.

Once the temperature of both the standard switching chamber 4 and the freezing chamber 5 reaches below the shutdown setting temperature due to the above-mentioned cold air supply, the microcomputer 22 stops the compressor 23 and the fan unit 15 . Once the temperature of any one of the standard switching chamber 4 and the freezing chamber 5 rises above the start-up setting temperature due to the stoppage of the operation, the microcomputer 22 will start the operation of the compressor 23 and the fan unit 15 again, and in the standard switching chamber 4 Compressor 23 and fan unit 15 are shut down when both sides of freezer compartment 5 reach the shutdown set temperature. At this time, if the standard switching chamber 4 is cooled below the shutdown setting temperature before the freezing chamber 5, the microcomputer 22 will close the baffle plate 18a of the damper device 18, and stop supplying cold air to the standard switching chamber 4.

As mentioned above, when any one of the temperature sensor 24 and the freezing room temperature sensor 25 in the standard switching chamber detects a temperature above the start-up setting temperature, the compressor 23 is started to run, so the temperature in the standard switching chamber 4 can be turned on and off. Temperature, the temperature in the freezer compartment 5 all remain below the power-on setting temperature.

And be when two temperature sensors 24,25 all detect the temperature below shutdown setting temperature and just make compressor 23 stop running, so can prevent compressor 23 from being cooled to necessary refrigerating temperature when specification switching chamber 4 has not yet been cooled to necessary refrigerating temperature. Then the problem of stalling occurs.

b) When the specification switching chamber 4 is a specification other than the refrigeration specification

At this time, the operation of the compressor 23 is controlled based on the temperature detected by the freezer compartment temperature sensor 25 . And the start-up set temperature and the shut-down set temperature of the temperature sensor 24 for the standard switch chamber are set to the temperature corresponding to the standard set with the variable resistor 20, and the baffle plate 18a of the damper device 18 switches the room temperature according to the standard. The start-up set temperature and the turn-off set temperature of the sensor 24 are subject to on-off control.

That is, once the temperature in the freezer compartment 5 rises above the start-up set temperature and the temperature sensor 25 for the freezer compartment detects this temperature, the microcomputer 22 will start the operation of the compressor 23 and the fan unit 15 . In this way, cold air is supplied to the ice making compartment 3 and the freezing compartment 5 in the same manner as described above. At this time, once the temperature sensor 24 for the specification switching chamber detects a temperature above the start-up setting temperature, the microcomputer 22 makes the damper 18 open, and cold air is supplied to the specification switching chamber 4 through the damper 18 .

Once this cold air supply makes the temperature of the specification switching chamber 4 cool down to below the shutdown setting temperature, the microcomputer 22 just makes the baffle plate 18a of the damper 18 do the closing action, and stops supplying cold air to the specification switching chamber 4. Once the freezer compartment 5 cools below the shutdown set temperature, the microcomputer 22 stops the compressor 23 and the fan unit 15 from running.

And, make ice making compartment 3 and freezer compartment 5 keep freezing temperature by the running and stopping of above-mentioned compressor 23 and fan device 15, make specification switching chamber 4 keep setting by opening and closing of damper 18a of damper device 18 simultaneously. specification temperature.

(2) Emergency control when the sensor is abnormal

Once the microcomputer 22 judges that the sensor is abnormal, it makes the light-emitting diode 32 emit light, and reports to the user that either or both of the temperature sensor 24 for the switching room and the temperature sensor 25 for the freezer are abnormal, and normal control cannot be performed. The user can ask for a repair if he knows that an abnormality has occurred according to the light emitting diode 32 . The microcomputer 22 performs emergency control at the time of an abnormality described below in addition to the above-mentioned abnormal alarm.

That is, once it is judged that the sensor is abnormal, the microcomputer 22 judges whether the standard switching chamber 4 is set to the freezer standard, and if it is set to the freezer standard, regardless of the temperature detected by the temperature sensors 24 and 25, the compressor is activated. 23 and fan unit 15 operation, make the baffle plate 18a of damper unit 18 do opening action simultaneously. In this way, cold air is supplied to the ice making compartment 3, the specification switching compartment 4, and the freezing compartment 5, and these compartments 3 to 5 are kept at freezing temperatures.

On the other hand, when the standard switch chamber 4 is set to a standard other than the freezer standard, the microcomputer 22 starts the operation of the compressor 23 and the fan device 15 regardless of the detected temperatures of the temperature sensors 24 and 25, and simultaneously activates the damper device. The baffle plate 18a of 18 is in closed state. In this way, both the ice-making compartment 3 and the freezing compartment 5 are kept at the freezing temperature, and at the same time, the standard switching chamber 4 is prevented from becoming at the freezing temperature and causing the food to freeze.

The above-mentioned emergency operation is an operation in a relatively short period of time before the maintenance personnel complete replacement of the temperature sensor, etc., and this operation can prevent the serious problem of thawing of frozen food from occurring. Adopting above-mentioned emergency operation is also because when the specification switching chamber 4 is a specification other than the freezing specification, it will hardly rise to normal temperature in a short period of time before the maintenance personnel complete the repair and cause food to deteriorate, and it is more important for the user. The purpose is to prevent food from freezing due to supply of cold air into the specification switching chamber 4 .

In the above-mentioned embodiment, when the standard switching chamber 4 is set to the freezer standard, when any one of the two temperature sensors 24, 25 detects a temperature above the power-on setting temperature, the compressor 23 starts to run. . Therefore, the following events are expected to occur.

First, the standard switching room 4 and the freezing room 5 have the following properties. That is, the cooling chamber 13 is formed at the back of the freezer compartment 5, which is easily cooled by the cooler 14, and the cold air cooled by the cooler 14 is directly supplied to it at once, so it is easy to be cooled. On the other hand, the internal volume of the freezer compartment 5 is large, and the areas of the left and right side walls in contact with the outside air are large, so there are many heat leaks and the temperature rises easily.

And the specification switching chamber 4 receives the cold air in the cooler 13 through the air supply path 16 and damper 18 formed in the cover body 12, so it is difficult to obtain a large air volume due to the passage resistance therebetween, and the blowing temperature of the cold air Also higher than freezer 5. Therefore, the standard switching chamber 4 is less likely to be cooled. On the other hand, the standard switching chamber 4 is connected to the refrigerator compartment 2, the freezer compartment 5 and the ice making compartment 3 on the upper and lower sides and the left side. The air contacts less wall area, as a result, less heat leaks out and the temperature rises less easily.

The specification switching chamber 4 and the freezing chamber 5 have the above-mentioned properties. Therefore, when the standard switching chamber 4 is set to the freezing standard, as described above, when any one of the two temperature sensors 24, 25 detects a temperature above the power-on setting temperature, the operation of the compressor 23 is started. After the standard switching chamber 4 and the freezing chamber 5 are cooled below the shutdown setting temperature, the freezing chamber 5 with more heat leakage first rises above the startup setting temperature. In the process that the temperature of the freezer compartment 5 rises from the state below the shutdown setting temperature due to the stoppage of the compressor 23, because the specification switching chamber 4 rises to a temperature above the startup setting temperature, the compression Machine 23 runs, forms the frequent running of compressor 23 like this.

In order to prevent this type of situation from happening, other embodiments of the present invention start the operation of the compressor 23 when both the temperature sensor 24 for the specification switching chamber and the temperature sensor 25 for the freezer chamber detect a temperature above the start-up setting temperature.

In this way, as shown in Figure 5, even if the freezer compartment 5 with more heat leakage rises to a temperature above the start-up set temperature (-20°C) (at time t1 in Figure 5), the specification switching compartment 4 has not yet reached the start-up temperature. The temperature above the set temperature (-19° C.) prevents the compressor 23 from operating. Then, once the specification switching chamber 4 reaches a temperature above the start-up setting temperature (time t2 in FIG. 5 ), the compressor 23 just starts running. At this time, although the temperature in the freezer compartment 5 reaches more than the set temperature for starting the machine, it is still maintained at a temperature below the minimum necessary for freezing, so the food in the freezer compartment 5 will not suffer from problems such as thawing. And in case specification switching chamber temperature sensor 24 and freezer compartment temperature sensor 25 are all cooled to below the shut-down setting temperature (time t3 among Fig. 5), compressor 23 just stops.

As mentioned above, in this embodiment, the operation of the compressor 23 is started only when the two temperature sensors 24 and 25 both detect a temperature higher than the set temperature, so that the compressor 23 can be prevented from overrunning. And when two temperature sensors 24, 25 all detect the temperature below the shutdown set temperature, the compressor 23 just stops running, so the specification switching chamber 4 or freezer compartment 5 can not be cooled to below the shutdown set temperature to compress Machine 23 just stops running problem.

As described above, the present invention has the following effects.

In the invention of technical solution 1, when the standard switching room is set to the freezing standard, the compressor is started when any one of the temperature sensor for the freezing room and the temperature sensor for the standard switching room detects a temperature above the power-on setting temperature. It runs, and it ends when both sensors detect a temperature below the shutdown set temperature, so the temperature of the freezer and specification switching chamber can be controlled to prevent its temperature from being higher than the start-up set temperature.

In the invention of technical solution 2, when the standard switching room is set to the freezing standard, the compressor starts to run when both the temperature sensor for the freezing room and the temperature sensor for the standard switching room detect a temperature higher than the set temperature at startup. Therefore, the compressor operating rate can be prevented from being too high.

The invention of the third technical solution can prevent frozen food from thawing or freezing of food that should not be frozen when the temperature sensor is abnormal.

Claims (3)

1. refrigerator has:

The refrigerating chamber that refrigerating chamber, the specification that can set reserve temperature in comprising a plurality of reserve temperature bands of cryogenic temperature band switch the chamber, detect described freezing indoor temperature with temperature sensor, detect described specification and switch the specification of indoor temperature and switch compressor and described throttle setting are controlled in the chamber with temperature sensor, to the throttle setting controlled to the cool-air feed of described specification switching chamber from cooler, according to the detected temperatures of described temperature sensor control device

It is characterized in that described control device

Switch the occasion that the chamber is set to freezing specification in described specification; Make the entry into service when described refrigerating chamber detects the temperature of starting shooting more than the design temperature with temperature sensor and specification switching chamber with the either party in the temperature sensor of described compressor; When all detecting the temperature of shutting down below the design temperature, finish by these two temperature sensors running; Described throttle setting is switched in described specification to be opened when the chamber detects the temperature of starting shooting more than the design temperature with temperature sensor; When detecting the temperature of shutting down below the design temperature, close

Switch the chamber in described specification and be set to the freezing specification occasion of specification in addition, make the entry into service when aforementioned refrigerating chamber detects the start design temperature with temperature sensor of described compressor, and when detecting the shutdown design temperature, finish to turn round, described throttle setting is switched in described specification open when the chamber detects the temperature of starting shooting more than the design temperature with temperature sensor, and when detecting the temperature of shutting down below the design temperature, close.

2. refrigerator has:

The refrigerating chamber that refrigerating chamber, the specification that can set reserve temperature in comprising a plurality of reserve temperature bands of cryogenic temperature band switch the chamber, detect described freezing indoor temperature with temperature sensor, detect described specification and switch the specification of indoor temperature and switch compressor and described throttle setting are controlled in the chamber with temperature sensor, to the throttle setting controlled to the cool-air feed of described specification switching chamber from cooler, according to the detected temperatures of described temperature sensor control device

It is characterized in that described control device

Switch the occasion that the chamber is set to freezing specification in described specification; Make the entry into service when described refrigerating chamber all detects the temperature of starting shooting more than the design temperature with temperature sensor and specification switching chamber with temperature sensor of described compressor; And when all detecting the temperature of shutting down below the design temperature, finish by these two temperature sensors to turn round; Described throttle setting is switched in described specification to be opened when the chamber detects the temperature of starting shooting more than the design temperature with temperature sensor; And when detecting the temperature of shutting down below the design temperature, close

Switch the chamber in described specification and be set to the freezing specification occasion of specification in addition, make the entry into service when described refrigerating chamber detects the start design temperature with temperature sensor of described compressor, and when detecting the shutdown design temperature, finish to turn round, described throttle setting is switched in described specification open when the chamber detects the temperature of starting shooting more than the design temperature with temperature sensor, and when detecting the temperature of shutting down below the design temperature, close.

3. refrigerator according to claim 1 and 2 is characterized in that, when described refrigerating chamber switch with temperature sensor and specification the chamber with temperature sensor in either party or both sides all take place when unusual,

Described control device

Switch the occasion that the chamber is set to freezing specification in described specification, make described compressor operation, described throttle setting is opened,

Switch the chamber in described specification and be set to the freezing specification occasion of specification in addition, make described compressor operation, described throttle setting cuts out.

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