CN1012521B - Temp. controlling means of refrigerator - Google Patents

Abstract

The present invention has the following main features: several temperature sensors are installed at different positions in the refrigerating room of the refrigerator, and these temperature sensors are used to control the switch of the air-conditioning control plate, so that there is no space in the refrigerator that is not cooled by the air-conditioning; The cold air flowing into the refrigerator is controlled by the plate, and directly sent to each space in the refrigerator divided by partitions through the communication channel, so that the purpose of air conditioning control can be accurately circulated in the refrigerator.

Description

The invention relates to the temperature control technology of a refrigerator, in particular to a control device for improving the temperature distribution state of a refrigerator.

Fig. 9 shows a cross-sectional view of a refrigerator equipped with a conventional temperature control device published in the Publication No. 58-57679.

In the figure, (1) is the main body of the refrigerator, (2) is the heat insulation wall plate that separates the inside of the refrigerator body (1), and (3) is the same as the heat insulation wall plate (2) that separates the body of the refrigerator (1). ) within a detachable compartment separated. (4) is a freezer room suitable for freezing food, (5) is a refrigerator room suitable for cold storage, and (6) is a vegetable room suitable for storing vegetables. Separated from the partition (3), the openings of each chamber are respectively equipped with switchable refrigerator doors. (7) is the cooling device of the refrigerator installed on the back wall of freezer compartment (4), (8) is the cooler body of this cooling device (7), and (9) is the fan that cold air is circulated. (10) is a back passage formed on the back of the cooling device, through which cold air enters the refrigerating chamber (5) from the cold air outlet (10a). (11) is an air regulator installed on the upper back of the refrigerator compartment (5) to adjust the inflow of cold air. This air regulator (11) is composed of a temperature regulator body (11a) and a regulating plate (11b). (12) is in order to make the cold air that circulated in the refrigerator compartment (5) and the vegetable compartment (6) return the cold air suction channel that cooling device (7) uses again. This cold air intake channel (12) is formed in the heat shield (2). (13) is to make cold air flow from the refrigerator compartment (5) into the vegetable compartment (6) Inside, and the rear channel formed at the rear of the partition (3). (14) is to make the cold air circulated in the vegetable compartment (6) return the passage in the refrigerator compartment (5). (15) is the storage rack that is properly arranged in the refrigerator compartment (5) to put food and other articles. (16) is the cold air passage that makes the cold air flow downward formed at the rear of the frame (15). (17) is the facing cover that protects the airflow adjuster (11) usefulness, and its top has the air-conditioning top vent (17a), and its bottom is provided with the bottom vent (17b). (18) is the air discharge grid that discharges cold air from cooling device (7) to freezing chamber (4). (19) is the suction grille that sucks the cold air that circulated in the freezer compartment (4). (20) is to suck away the front part suction port that circulated cold air in the same freezer compartment (4). formed on the front of the heat shield (2).

In the past, the structure of the refrigerator equipped with a temperature regulating device is as above: this kind of refrigerator uses the fan (9) to forcefully transport the cold air generated by the cooling device (7) to each room in the refrigerator, so that each room reach the proper temperature.

The cooling operation of each of the above chambers will be explained as follows.

The cold air generated by the cooler body (8) directly cools the freezer compartment (4).

The cooling condition of the refrigerator compartment (5) is as follows: relying on the work of the fan (9), the cold air in the cooling device (7) is forced into the back passage (10), and flows into it through the air outlet (10a) of the back passage (10) In the facing cover (17), it flows into the refrigerating chamber (5) from the upper air vent (17a) and the lower air vent (17b), and the cold air circulates in the refrigerating chamber (5) to cool it down. Then, part of the cold air flowing through the refrigerating chamber (5) flows into the vegetable chamber (6) through the cold air channel (16) and the rear hole (13), circulates and cools in the vegetable chamber (6) . Also, after the loop The cold air with a slightly increased temperature passes through the channel (14) and is sucked into the channel (12) by the cold air and then returns to the cooling device (7) for recooling.

As a result of the above cold air circulation, when the refrigerated compartment (5) and the vegetable compartment (6) reach the specified low temperature, the regulator (11) starts to work, and the regulator plate (11b) is used to close the air vent of the back passage (10) (10a), regulating the emission of cold air to prevent overcooling in the refrigerator compartment (5). When the temperature in the refrigerator exceeded the prescribed temperature, the regulator (11) started to work again to carry out the cold air circulation to control the temperature inside the refrigerator compartment (5) and the inside of the vegetable compartment (6).

Fig. 10 is a circuit diagram of a conventional refrigerator temperature control device described in JP-A-61-134564. In the figure (21) is a temperature sensor such as a thermistor installed in the freezing chamber, the voltage at point A determined by the voltage division ratio between it and the resistor (22), and the voltage determined by the resistor (23) and the resistor (24) The voltage at point B (corresponding to the set temperature) is compared with the comparison circuit (voltage comparison integrated circuit) (25), and its output is input to the compressor relay (27) driving transistor (26) and "OR" gate circuit (28).

(29) is a temperature sensor such as a thermistor installed in the refrigerating chamber, the voltage at point C determined by the voltage division ratio between it and the resistor (30), and the point D determined by the resistor (31) and the resistor (32) The voltage is compared by the comparator circuit (33), and its output is input to the transistor (34) for driving the damper relay (35) and the OR circuit (28).

The output of the "OR" gate circuit (28) which takes the outputs of the comparison circuits (25) and (33) as input is transmitted to the transistor (36) for driving the fan motor relay (37).

(38) is the alternating current power supply, and this power supply passes contact point (44) (43) (42), supply power to compressor (41), fan motor (40) and regulator (39) respectively.

First, when the temperature in the freezing chamber rises, the resistance value of the temperature sensor (21) will decrease, so the voltage at point A is higher than the voltage at point B, and the output of the comparison circuit (25) will increase. The transistor (26) is turned on by this output, the compressor relay (27) is excited and the contact (44) is closed, and the compressor (41) is energized.

Secondly, contrary to the above situation, when the temperature in the freezing chamber decreases, the resistance value of the temperature sensor (21) will increase, and the input of the comparison circuit (25) will decrease. As a result, the transistor (26) is turned off, the compressor relay (27) is not excited, the contact (44) is disconnected, and the compressor is stopped. Since the output of the comparison circuit (25) is input to an input terminal of the "OR" gate circuit (28), when its output value is high, the output of the "OR" gate circuit (28) will also increase, making the transistor (36) connected. Now the fan motor relay (37) is excited, the contact (43) is closed, and the fan motor starts to run. That is, when the output of the comparison circuit (25) increases, the compressor (41) and the fan motor (40) perform cooling operation simultaneously.

The temperature control of the refrigerator compartment is also the same as the case of the freezer compartment described above. That is to say, the change of the resistance value corresponding to the temperature change of the temperature sensor in the refrigerating chamber is measured, and when the temperature in the refrigerating chamber is high, the voltage at point C is higher than the voltage at point D, so the output of the comparison circuit (33) increases. Then, the transistor (34) is in the ON state, the relay (35) of the adjustment board is excited, the contact (42) is closed, and the power is supplied to the adjustment board (39), so the adjustment board is opened, and the refrigerating chamber is cooled. Simultaneously, because " OR " gate circuit ( 28 ) has accepted the high input value, the output of " OR " gate circuit ( 28 ) also increases, thereby fan motor ( 40 ) starts running.

Contrary to this, when the temperature (29) of the refrigerating compartment drops, the contact (42) is just broken. Open, the regulator (39) is de-energized, and the regulating plate is just closed.

As explained above, if the temperature of the freezer compartment of the conventional refrigerator rises, the compressor and the fan motor are turned on to cool the freezer compartment; Cool in the refrigerator.

The problem with the temperature control device in the past is that since there is only one temperature sensor (29) in the refrigerator, if there is too much food stored in the refrigerator, or when the circulation of the cold air is affected due to poor food placement, the refrigerator will The temperature distribution in the room will be uneven.

Another problem is that when only the refrigerator is cooled, because the fan motor is running, cold air is also sent to the freezer, and the temperature of this cold air is higher than the temperature in the freezer when the compressor is not running. When the compressor is stopped, the freezer temperature rises faster. For this reason, the compressor's operating rate is high, which increases power consumption.

In order to solve the above-mentioned problems, the object of the first invention is to provide a refrigerator control device which can make the temperature distribution in the refrigerator uniform and reduce power consumption.

In recent years, refrigerators have developed in the direction of large-scale and multi-door. The cold room is generally divided into several layers, and a large amount of food is stored, so that the cold air channel behind the partition is blocked. If the first invention is adopted, the cold air may still be insufficient to cool the whole cold room (5) The phenomenon.

The second invention is an improvement of the above first invention, and its purpose is to propose a temperature control device for a refrigerator that is not affected by the state of the stored items in the refrigerator and makes the temperature in the refrigerator evenly distributed.

The application example of the first invention will be described below with drawings.

Fig. 1 is the structural diagram of the whole refrigerator proposed by the application example of the first invention; Fig. 2 is the control process block diagram of Fig. 1; Fig. 3～Fig. 5 is the flowchart representing the control flow of Fig. 1; Fig. 6 is a sectional view of a refrigerator equipped with a temperature control device in the application example of the second invention; Fig. 7 is a block diagram showing the temperature control circuit of the refrigerator in the application example of the second invention; The flowchart of the working state of the temperature control device of the refrigerator; Figure 9 shows a sectional view of a traditional refrigerator equipped with a temperature control device; Figure 10 is a control circuit diagram of a traditional refrigerator.

Figure 1 is a general structural diagram of a refrigerator. (1) It is the main body of the refrigerator. (4) is freezing room, indoor temperature sensor (45) (hereinafter referred to as: F thermistor) such as thermistor is housed, its output is input in the refrigerator temperature detection means (46). A cooler (8) and a fan motor (9) are installed on the rear wall of the freezer (4), and the fan motor (9) passes the cold air cooled by the cooler (8) through the freezer (4) and the channel (10) Mandatory delivery to the cold room (5). (11) is an airflow adjuster equipped with an adjusting plate (11b) to control putting cold air into the refrigerating room (5). When the adjusting plate (11b) is opened, cold air is discharged into the refrigerating room (5). When the plate (11b) is closed, the cold air passage is closed. The switch of above-mentioned regulating plate (11b) is controlled by circuit.

On different positions in the refrigerator compartment (5), a first temperature sensor (47) such as a thermistor (hereinafter referred to as: R ₁ thermistor) and a second temperature sensor (48) (hereinafter referred to as: R ₂ Thermistor), the output of each sensor is input into the internal temperature detection means (46) of the refrigerator. (49) is a control panel installed on the surface of the refrigerator door for setting the internal temperature of the refrigerator, and inputs the set temperature into the set temperature detection means (50).

(51) is a control means, the signals sent from the refrigerator internal temperature detection means (46) and the set temperature detection means (50) are input into the control device (52), and from the control device (52) respectively control the compression The compressor control means (53) of the machine (56), the adjustment plate control means (54) of the control adjustment plate (11b) and And the fan motor control means (55) for controlling the fan motor (9) sends a control signal.

Fig. 2 is a block diagram of a control device. In the figure, (57) uses F thermistor (54), R ₁ thermistor (47) and R ₂ thermistor (48) as inputs to detect the internal temperature of the refrigerator (including the freezer compartment (4) The internal temperature detection circuit of the refrigerator used for the temperature of the refrigerator compartment (5) is corresponding to the internal temperature detection means (46) of the refrigerator. The temperature data is then sent to a control loop (59) corresponding to the control means (52) of Figure 1. (58) is the internal temperature setting loop of the refrigerator equivalent to the set temperature detection means (50) in Figure 1, and it also sends the set temperatures of the freezer compartment (4) and the refrigerator compartment (5) to the control loop (59) .

The control circuit (59) determines the operating conditions based on the data from the refrigerator internal temperature detection circuit (57) and the refrigerator internal temperature setting circuit (58), and compresses machine drive circuit (60), the fan motor drive circuit (61) equivalent to the fan motor control means (55) in Figure 1, and the adjustment plate drive circuit (62) equivalent to the adjustment plate control means (54) in Figure 1, respectively Control the operating states of the compressor (56), the fan motor (9) and the regulating plate (11b).

The working process of the refrigerator control device with the above structure is described as follows with FIG. 3 .

A brief flow chart of the entire program in the control loop (59) is represented in Fig. 3 . First perform the initial setting in step 100, and then enter the main program. In the 200th step, the data of each thermistor (45), (47), (48) are converted into temperature according to the data obtained from the refrigerator temperature detection circuit (57). In the 300th step, the data of the internal temperature setting loop (58) of the refrigerator is converted into a set temperature. In the 400th step, after the temperature is determined according to the internal temperature data and the set temperature data of the refrigerator, the operating conditions of the refrigerator are determined, and the result of the determination is output in the 500th step.

Fig. 4 is a flow chart showing the detailed procedure of the temperature judgment routine (step 400). First, compare the set temperature T _FS of the freezer compartment (4) with the temperature T _Fa of the F thermistor in the F temperature control section (steps 401 to 402), and if the temperature T _Fa of the F thermistor is high, set COMPF is set at 1 (step 404); if T _Fa is low, COMPF is set at 0 (step 403). Secondly, compare the average temperature T Ra of R ₁ thermistor temperature T _Ra1 and R ₂ thermistor temperature T _Ra2 with _{the set temperature T Rs in} the R temperature adjustment part (steps 410-415), if the average temperature If the resistance temperature T _Ra is high, set DAMPF at 1 (step 417); if T _Ra is low, set DAMP F at 0 again. Again, when R ₁ thermistor temperature T _Ra1 or R ₂ thermistor temperature T _Ra2 is lower than the set temperature T _RS - _{T 1} temperature (see Figure 4), set DAMPF at O (No. 418, 419 , step 422). If the temperature is high, compare the temperature of R ₁ thermistor T _Ra1 or R ₂ thermistor T _Ra2 with the set temperature T _Rs + T ₂ degrees, if the previous temperature is high, respectively compare DAMP F and FAN F is set at 1 (steps 420, 421, 424); if the previous temperature is low, FANF is set to 0 (step 423).

Fig. 5 shows the flow chart of the program (the 500th step) of the output part, the judgment of DAMP F is carried out in the (501) step, if it is 1, just output the signal of opening the regulating board (the 503rd step), if it is 0, just output A signal to close the regulator plate is output (step 502). Next, carry out the judgment (the 504th step) of COMP F, if it is 1, when outputting the signal (the 506th step) that the compressor starts, the fan is also started (the 509th step). If COMP F is 0, then output the signal of compressor shutdown (step 505), then judge FANF (step 507), if it is 1, output the signal of FANON (step 509), if it is 0, then output FANOFF's signal.

Since the control is carried out according to the above procedure, when the difference between the _R1 thermistor temperature T _Ra1 and the _R2 thermistor temperature T _Ra2 is small, that is, when the refrigerator load is stable in normal use, the above two thermistors The average value of the temperatures T _Ra1 and T _Ra2 is judged as the internal temperature of the refrigerating chamber, and the regulating board is switched on and off according to the average temperature to control the internal temperature of the refrigerating chamber. In addition, when the regulating plate is turned on and the compressor is turned off, since the fan motor is turned off, the temperature rise of the freezer part is small and the operation rate is low, so power can be saved.

Secondly, when a large amount of food is placed in the refrigerator, when the temperature inside the refrigerator rises (over the temperature determined by the above-mentioned temperature _T1 ), the fan motor will run even if the compressor is in the OFF state. Therefore, the refrigerator can be cooled down quickly.

Again, when the food stored in the refrigerator obstructs the convection of cold air and only part of it is cooled (when the temperature is lower than the temperature determined by _T2 ), since the regulating plate is closed first, the food can be prevented from freezing.

The above application example is the case where two temperature sensors are installed in the refrigerator, but the number is not limited to two, and three or more temperature sensors may be installed.

In the above application example, the average temperature of the two temperature sensors installed in the refrigerator is used as the internal temperature of the refrigerator for control, but one sensor is used as a special temperature sensor under normal conditions, and the other is used as a temperature sensor only for abnormal conditions. The same effect can be achieved with any sensor used for detection.

As mentioned above, according to the first invention proposed here, more than two temperature sensors are set in the refrigerator compartment, and the regulating board is switched according to the detected temperature of these sensors. As long as one of them exceeds a certain temperature, it will Make the adjustment board open and the fan motor run; if one of them is lower than a certain temperature, the adjustment board will be closed first, so it can be Make the temperature distribution in the refrigerating room even, realize the cooling that suits the load in the refrigerating room, and reduce power consumption.

The second invention is to improve the first invention, so that the temperature distribution in the refrigerating chamber is not affected by the storage state of the goods and achieves uniformity. The application example of the second invention will be described below with the drawings.

Fig. 6 shows a sectional view of a refrigerator equipped with a temperature control device as an example of the second invention. Fig. 7 is a block diagram of the circuit of the refrigerator temperature control device, and Fig. 8 is a flow chart of the working state of the same refrigerator temperature control device. (1) to (14) and (17) to (20) in the figure are the same or corresponding components as those in the above-mentioned 9th figure.

Among the figure (63) is the channel that conveys cold air, and it leads to the bottom of the veneer (17) that covers regulator (11) all the time, and this channel (63) extends the rear wall of cold room (5) to the partition The position where the rear hole (13) of the segment (3) (between the refrigerator compartment (5) and the vegetable compartment (6)) communicates. (64), (65), (66) are partitions that divide the cold room into several spaces, (67), (68), (69) are cold air outlets installed on the channel (63), and are respectively configured Between several compartments (64), (65), (66) of the cold room (5). (70), (71), (72) are respectively installed between each compartment (64), (65), (66) and are made of temperature sensors such as temperature measuring thermistors, wherein (70) is Representative temperature sensor. (73), (74), and (75) are temperature detection means connected to the temperature sensors (70), (71), and (72), respectively, and (73) is a representative temperature detection means. (76) is the variable resistor that is arranged on the freezer (4) door or the cold room (5) door, (77) is the set temperature detection means that is connected with the variable resistor (76), (78) is the microcomputer and other control means, use it to control the representative temperature detection means (73), temperature detection means (74), (75) and setting After the electrical signals of the temperature detection means (77) are compared respectively, the switching action of the regulator (11) is controlled.

As shown in Figure 6, the refrigerator compartment (5) is divided into 5 storage space (78), (79), (80), (81), (82). In addition, (83) is a cold air outlet for putting cold air into the space (78), and (84) is a cold air outlet for releasing air to the space (82).

The structure of the refrigerator temperature control device proposed in the second invention is as described above. The entire flow process and the circulation of the cold air delivered to the refrigerator body (1) by the fan (9) of the cold air produced by the cooling device (7) are basically the same as in the past. Therefore, in this specification, the improved parts different from conventional ones will be described emphatically.

First, the case of putting cold air into the refrigerator compartment (5) will be described. Because the present invention is provided with a decorative cover (17) covering the regulator (11), its lower part is connected with the channel (63), so the cold air generated in the cooling device (7) passes through the rear wall channel (10), The facing cover (17) flows into the channel (63). This channel (63) has cold air vents (67), (68), (69) respectively on several sub-chambers (64), (65), (66) in the refrigerator compartment (5), so that each cold air Air vents (67), (68), (69) emit cold air together. At the same time, the remaining cold air can be put into the vegetable compartment (6). Therefore, it is different from previous refrigerators (shown in Figure 9), and it is not only from the vent (17a) on the top of the decorative cover (17) and the vent (17b) on the bottom to release the cold air, so the cold air can flow in quickly In the refrigerator compartment (5) and in the vegetable compartment (6). And because these cold air outlets (67), (68), (69) are respectively arranged in each sub-chamber (64), (65), (66), so the cold air can be evenly put into the whole cold room (5) . In particular, cold air is generally downdraft This feature of moving, and this cold air is blown down from the cooling device (7) on the top of the refrigerator body (1), and the cold air vents (67), (68), (69) are arranged in the refrigerator compartment ( 5) In the vicinity of the lower surface of each grid plate (15) separated by several partitions (64), (65), (66), a better cold air circulation effect can be obtained. In addition, if the air outlet is set at this position, even if a large amount of food is stored in the refrigerator (5), the cold air outlet (67), (68), (69) will not be blocked, so the air conditioning will not be affected circulation. In addition, the channel (63) is set on the back side of the grid (15), which can ensure that the cold air channel is unimpeded, so even if a lot of food is placed on the grid (15), the circulation of the cold air will not be hindered. Therefore, the space for storing food can be effectively utilized in the refrigerator compartment (5).

Next, illustrate the temperature control means in the refrigerator compartment (5).

In order to detect the temperature inside the refrigerator compartment (5), several temperature sensors (70), (71), (72) are installed in the refrigerator compartment (5). This is due to the large capacity of the refrigerator (5), and it is difficult to achieve a uniform temperature distribution, and improper storage of food, etc. will also affect the temperature distribution, so the temperature in the refrigerator (5) is compared with the set temperature. Measures for temperature adjustment. Therefore, if the grid (15) in the refrigerating chamber (5) is divided by several partitions (64), (65), (66), if each partition (64), (65), (66) Three temperature sensors (70), (71), and (72) are installed correspondingly, and the effect is better. In addition, using the control means (78), the detection temperature detected by several temperature sensors (70), (71), (72) and temperature detection means (73), (74), (75) is compared with the temperature detected by the available After the variable resistance (76) is compared with the set temperature measured by the set temperature detection means (77), the switching action of the regulator (11) is controlled.

This control method will be described below.

For example, take any one of several temperature sensors as a representative temperature sensor (70), and use its detected temperature as a representative value, then compare this representative value with the set temperature, and when the representative value is greater than the set temperature , so that the regulating plate (11b) is in the open state, and when the representative value is lower than the set temperature, the regulating plate (11b) is in the closed state, so as to adjust the amount of cold air released. Only with this adjustment method for adjusting the amount of cold air released, when the temperature distribution of the compartments (64), (65), and (66) in the refrigerator compartment (5) are often maintained in a uniform state, it is also possible to adjust the temperature. regulated. However, this measure alone is not sufficient when the temperature distribution is not uniform. Therefore, without this representative value and set temperature, when the temperature detected by any one of the several temperature sensors (70), (71), (72) exceeds the set temperature to outside the specified temperature range, Just make its control regulator (11) produce switching action. That is to say, when the temperature detected by the temperature sensors (71) and (72) other than the representative temperature sensor (70), the lowest temperature is less than the set temperature minus the specified temperature (for example, the set temperature -3°C ), the regulating plate (11b) is in a closed state; on the contrary, the highest temperature among the temperatures detected by the temperature sensors (71), (72) is greater than the set temperature plus the specified temperature (for example, the set temperature + 3°C), the control regulating plate (11b) is turned on. After adopting this control method, among the compartments (64), (65), (66) in the refrigerating chamber (5), the compartment (64), (65) that deviates from the maximum temperature of the set temperature can ), (66) to control the switching action of the regulator (11), thus helping to make the temperature distribution in the refrigerator compartment (5) reach a uniform state. Using this control method can make the temperature distribution uniform to a certain extent .

When food with high temperature is stored on one of several compartments (64), (65), (66), and on each compartment (64), (65), (66) by When the temperature is prone to local changes due to the way the food is stored, it will not spoil or freeze the food at all.

The method for adjusting the cold air supply amount of the refrigerator temperature control device of this example is further described below using the flow chart of FIG. 8 .

In the figure, let the temperature detected by the representative temperature sensor (70) be T _A , among the detected temperatures measured by other temperature sensors (71), (72), let the highest temperature be T _BH , and the lowest temperature be T _BL , the set temperature is T _S . Then set the temperature difference higher than the set temperature T _S by a certain temperature as the specified temperature T ₁ (for example, 3°C), and the temperature difference lower than the certain temperature as the specified temperature T ₂ (for example, -3°C).

First, in step S1, the representative detected temperature T _A obtained by the representative temperature sensor (70) is compared with the highest temperature T _BH of detected temperatures measured by other temperature sensors (71), (72). If T _BH is higher than T _A by a predetermined temperature _T1 (eg 3°C), the regulating plate (11b) is opened in step S4. When the difference between T _BH and T _A is less than the specified temperature T ₁ , in step S2, the lowest temperature T _BL among the detection temperatures detected by the temperature sensors (71) and (72) and the representative detection temperature T _A are compared. Compare. And if the difference is greater than the specified temperature _T2 (eg -3°C), the regulating plate is turned off in step S5. In addition, when the difference is less than the specified temperature _T2 , then in step S3 again, the representative detected temperature T _A obtained by the representative temperature sensor (70) is compared with the set temperature T _S. In this step S3, when the representative detection temperature T _A is lower than the set temperature T _S , the regulating plate (11b) is closed in the S5 step, and if the situation is opposite, the The regulating plate (11b) is in an open state.

As mentioned above, among the compartments (64), (65), (66) in the refrigerating chamber (5), the part whose temperature condition deviates farthest is used as the basis, regardless of the set temperature. The switching action of the regulator (11) is controlled in a timely manner to make the temperature distribution in the refrigerator compartment (5) uniform. Moreover, if the difference in temperature of each compartment (64), (65), (66) is within the specified temperature range, simply compare the set temperature with the representative value measured by the representative temperature sensor (70). By comparison, the temperature in the refrigerator can be adjusted.

The method for adjusting the amount of air-cooled air released can be implemented repeatedly and continuously at regular intervals. Moreover, while the temperature distribution in the refrigerating chamber (5) is uniformized, the temperature in the refrigerating chamber (5) is also adjusted.

In the above application examples, it is explained that the representative value is determined by the detected temperature of several temperature sensors, that is, any one of these temperature sensors is set as a representative temperature sensor (70), and its detected temperature is used as a representative value Case. However, this representative temperature sensor ( 70 ) is not necessarily limited to a representative temperature sensor, and other temperature sensors ( 71 ), ( 72 ), etc. may be used instead. In addition, these temperature sensors are preferably installed at positions where it is easy to detect the temperature in each sub-chamber, and the installed quantity can also be appropriately increased with the increase of the internal volume of the refrigerator compartment (5).

When determining the representative value from the detected temperatures of several temperature sensors, the detected temperatures may be averaged and the average value may be used as the representative value of the detected values. In this case, it is particularly advantageous from the point of view of homogenizing the temperature distribution in the refrigerator compartment (5).

In the above application examples, the temperature sensors are arranged in the three spaces (79), (80), and (81), but it is also more convenient to arrange the temperature sensors in the uppermost space (78) and the lowermost space (82). Good method. If it is designed in this way, the application example is as follows: the cold air is sent from 5 vents (83), (67), (68), (69), (84) into 5 spaces (78), (79), ( 80), (81), (82), according to the detection signals obtained from the five temperature sensors respectively arranged in the five spaces (78), (79), (80), (81), and (82), in the control means Carry out the switch control of regulator (11) in (78).

The installation method of the temperature sensor and the temperature control method in the above examples can also be implemented in the same way as the application examples of the first invention shown in FIGS. 1 to 5 .

As can be seen from the above description, the refrigerator temperature control device proposed in the second invention is the same as the first invention. Control the switching action of the adjusting plate to adjust the flow of cold air, so that the temperature distribution of the entire refrigerator can be uniformed to a certain extent, eliminate irregular cooling, improve cooling efficiency, and achieve an ideal temperature control of the refrigerator. Not only that, the cold air channel is connected to the lower part of the decorative cover covering the regulator. On this channel, there are vents for putting cold air into each divided compartment. The cold air generated by the cooling device passes through the channel for delivering cold air. , Blow from each cold air outlet to each sub-chamber at the same time, so that the cold air can be quickly and accurately sent into the entire cold storage room without being affected by the amount of stored items.

Claims (4)

1. A temperature control device for a refrigerator, comprising an air regulator with a regulating plate for controlling the blowing of cold air into the refrigerator compartment and a compartment for dividing the refrigerator compartment into several spaces, characterized in that the refrigerator temperature control device It also includes cold air outlets located in the above-mentioned spaces, passages that cover the above-mentioned adjustment plates and communicate with the cold air outlets, several temperature sensors installed at different positions in the refrigerating room, and the temperature detected by the above-mentioned temperature sensors. The temperature control device in the refrigerating room controls the above-mentioned adjusting plate. 2. The refrigerator temperature control device according to claim 1, characterized in that the installation of the temperature sensor corresponds to each section. 3. The refrigerator temperature control device according to claim 1, characterized in that the airflow regulator is installed on the back of the upper part of the refrigerating chamber. 4. The temperature control device for a refrigerator according to claim 1, characterized in that the cold air outlet is installed near the lower surface of the compartment.

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