CN109974372A - refrigerator - Google Patents

Abstract

The invention discloses a refrigerator, the refrigerator includes a refrigerating compartment and a freezing compartment, and the air paths of the refrigerating compartment and the freezing compartment are kept in communication, and the refrigerator further includes a main control board for controlling the operation of the refrigerator, The main control board performs detection steps and control steps, and the detection steps include: Step E1—detecting whether the temperature of the freezing compartment is higher than a certain value, and whether the temperature rises above a certain value within a certain period of time; the control steps include: : Step C1—when step E1 is true, the main control board controls the compressor to run in strong gear. When the main control board detects that the temperature of the freezer compartment is higher than a certain value, and the temperature rises above a certain value within a certain period of time, the main control board controls the compressor to run in a strong gear to force cooling, thereby shortening the freezing time.

Description

refrigerator

technical field

The invention relates to a refrigerator, in particular to a control step of the refrigerator, and belongs to the field of refrigeration equipment.

Background technique

There is a refrigerator with relatively strong cost competitiveness in the market: there are two types of compartments: refrigerating and freezing. The temperature range of the refrigerating compartment is 0 to 8 °C, and the freezing compartment is below -18 °C.

The air path between the refrigerated compartment and the refrigerated compartment of this kind of refrigerator is kept connected. In terms of refrigeration control, the program only controls the working state of the compressor according to the temperature of the refrigerated compartment. Through the distribution of air volume or the area of the evaporator, each compartment is balanced Cooling demand, so as to realize the different temperature requirements of each room; instead of using dampers, solenoid valves and other components to control the temperature of each room.

Such a design has the characteristics of low cost and simple control program, which makes the product more competitive in the market.

However, when such a control program is used for freezing capacity experiments, or when a user puts a large amount of food in the freezing compartment at one time, since the refrigeration time is controlled by the refrigerating compartment, even if the freezing temperature does not reach -18°C, as long as the refrigerating compartment When the room temperature reaches the standard, the compressor will stop working, and the cooling will end, and the compressor will not work again until the refrigerator compartment rises to the starting point again, and the cooling will start again. As a result, it takes a long time for the food in the freezer compartment to drop below -18°C. cause users to complain.

The traditional method of improving the freezing capacity is to increase the damper, electromagnetic valve and other components. When a large amount of food is put into the freezing compartment, the damper is closed to allow the freezing compartment to cool alone, thereby shortening the cooling time of the frozen food. The cost of such a refrigerator realizing the fast cooling function by independent control of the freezing compartment is high, and the control logic is complicated.

The purpose of the invention is to reduce the freezing time through optimized control steps on the basis of not adding components such as dampers and electromagnetic valves.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a refrigerator capable of shortening the freezing time.

In order to achieve the above object of the invention, the present invention provides a refrigerator, the refrigerator includes a refrigerating compartment and a freezing compartment, and the air passages of the refrigerating compartment and the freezing compartment are kept in communication, and the refrigerator further includes controlling the operation of the refrigerator. The main control board, which performs the detection step and the control step, is characterized in that:

The detection step includes: Step E1—detecting whether the temperature of the freezing compartment is higher than a certain value, and whether the temperature rise is higher than a certain value within a certain period of time;

The control steps include: step C1—when step E1 is true, the main control board controls the compressor to run in high gear.

As a further improvement of an embodiment of the present invention, the detection step also includes: Step E2—the main control board detects whether the door of the refrigerator is closed, and when steps E1 and E2 are true, the main control board controls the compressor to run in a strong gear .

As a further improvement of an embodiment of the present invention, the step E1 and the step E2 have no sequence requirement.

As a further improvement of an embodiment of the present invention, the refrigerator further includes a low-temperature compensation heating wire close to the refrigerated compartment, and the control step further includes step C2—turning on the low-temperature compensation heating wire.

As a further improvement of an embodiment of the present invention, the step C1 and the step C2 have no sequence requirement.

As a further improvement of an embodiment of the present invention, the refrigerator is further provided with a defrosting sensor, and the control step further includes step C3—the main control board detects that the refrigerator is in a defrosting state through the defrosting sensor , the main control board stops executing steps C1 and C2.

As a further improvement of an embodiment of the present invention, the main control board records the execution time of step C1, and when the refrigerator is in a defrosting state and stops executing step C1, the main control board continuously records the execution time of step C1.

As a further improvement of an embodiment of the present invention, the main control board exits the control step when any of the following exit conditions are satisfied, and the exit conditions include:

Condition Q1—control gear change;

Condition Q2—the temperature of the refrigerated compartment is greater than or equal to a specific value;

Condition Q3—the main control board detects that the time for the refrigerator door to be opened exceeds a specific value;

Condition Q4—The execution time of step C1 reaches a specific value

As a further improvement of an embodiment of the present invention, the main control board stops executing the detection step when executing the control step; after the main control board exits the control step, the main control board executes the detection step once at a specific time interval.

Compared with the prior art, the beneficial effect of the present invention is that: when the main control board detects that the temperature of the freezing compartment is higher than a certain value, and the temperature rise is higher than a certain value within a specific time, the main control board controls the compressor to run at a strong gear , Strong refrigeration, thus shortening the freezing time. The invention optimizes the control process of the existing main control board in the refrigerator, so as to rapidly cool the freezing compartment and improve the freezing capacity. Compared with adding dampers, solenoid valves and other components, the cost is lower, and it is more in line with the needs of low-cost refrigerators.

Description of drawings

Fig. 1 is a schematic diagram of a control module of a main control board of a refrigerator provided in a specific embodiment of the present invention.

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same or similar parts or parts are designated by the same reference numerals in the figures. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. For example, some dimensions of structures or parts may be appropriately exaggerated relative to other structures or parts for the convenience of illustration. Therefore, the accompanying drawings are only used to illustrate the present invention. The basic structure of the subject of the application.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

Referring to FIG. 1, an embodiment of the present invention provides a refrigerator. The refrigerator includes a refrigerating compartment and a freezing compartment, and the air paths of the refrigerating compartment and the freezing compartment are kept in communication.

Since the air passages between the refrigerating compartment and the freezing compartment are kept connected, the refrigerator in this embodiment has no components such as dampers and electromagnetic valves, and the cost is relatively lower and more cost-competitive.

The refrigerator also includes a main control board that controls the operation of the refrigerator. The main control board performs detection steps and control steps,

The detection steps include: E1—detect whether the temperature of the freezing compartment is higher than a certain value, and whether the temperature rise is higher than a certain value within a certain time;

The control steps include: C1—when step E1 is true, the main control board controls the compressor to run in high gear.

That is to say, when the main control board detects that the temperature of the freezer compartment is higher than a certain value, and the temperature rises above a certain value within a certain period of time, the main control board controls the compressor to run at a strong gear to perform strong cooling, thereby shortening the freezing time.

For example, when the main control board detects that the temperature of the freezer compartment is higher than -18°C, and the 120S internal temperature rise is higher than 5°C, at this time, it can be judged that the user puts a large number of items in the freezer compartment at one time. The board controls the strong gear operation of the compressor, which can quickly lower the temperature of the freezing compartment, thereby shortening the freezing time.

In this embodiment, by optimizing the control process of the existing main control board in the refrigerator, the freezing compartment is rapidly refrigerated and the freezing capacity is improved. Compared with adding dampers, solenoid valves and other components, the cost is lower, and it is more in line with the needs of low-cost refrigerators.

In this embodiment, preferably, the detection step further includes: step E2—the main control board detects whether the refrigerator door is closed, and when steps E1 and E2 are true, the main control board controls the compressor to run at a high gear.

That is to say, when the main control board detects that the temperature of the freezer compartment is higher than a certain value, and the temperature rises above a certain value within a certain period of time, and the refrigerator door is also in the closed state, the main control board controls the compressor to run in strong gear. .

On the premise that the refrigerator door is closed, the main control board controls the compressor to run at a high gear, which can avoid energy waste caused by a large amount of cold air leakage.

Preferably, in this embodiment, step E1 and step E2 have no sequence requirement.

Therefore, the main control board can firstly detect the temperature change and duration of the freezer compartment, and can also firstly detect whether the refrigerator door is closed. This provides more possibilities for programming the main control board.

In this embodiment, preferably, the refrigerator further includes a low-temperature compensation heating wire close to the refrigerated compartment, and the control step further includes C2—turning on the low-temperature compensation heating wire.

When the control step C1 is executed, the compressor runs at a strong gear to perform strong cooling, which can cause the temperature of the freezing compartment to drop rapidly. Since the air passage between the refrigerating compartment and the freezing compartment remains connected, the temperature of the freezing compartment drops rapidly while the refrigeration The temperature of the compartment will also drop rapidly, which may spoil some foods if it reaches near-freezing temperatures.

Therefore, the control step of this embodiment turns on the low-temperature compensation heating wire close to the refrigerated compartment while cooling strongly, so as to keep the temperature of the refrigerated compartment within a suitable refrigerated temperature range and avoid freezing the food in the refrigerated compartment.

In this embodiment, preferably, there is no sequence requirement for step C1 and step C2.

That is to say, when the detection step is true and the control step is entered, step C1 of intensive cooling can be performed first, or step C2 of turning on the low temperature compensation heating wire can be performed first. This provides more possibilities for the program setting of the main control board.

In this embodiment, preferably, a defrosting sensor is provided on the refrigerator, and the control step further includes C3—when the main control board detects that the refrigerator is in a defrosting state through the defrosting sensor, the main control board stops executing steps C1 and C2.

If the refrigerator is heavily frosted and does not defrost, the evaporator, fan, etc. may be frozen, and the cooling effect is extremely poor. The machine stops running and turns off the low temperature compensation heating wire.

The main control board will check the status of the defrost sensor at intervals, for example, every one minute. If the signal from the defrost sensor to the main control board is that the refrigerator is no longer in the defrosting state, the main control board will perform steps C1 and C2 again, that is, Control the strong gear movement of the compressor again to refrigerate strongly, and open the low temperature compensation heating wire close to the refrigerated compartment.

Preferably, in this embodiment, the main control board records the execution time of step C1, and when the refrigerator is in a defrosting state and stops executing step C1, the main control board continues to record the execution time of step C1.

That is, the defrosting time of the refrigerator is included in the execution time of step C1. Since the defrosting time is shorter than the cooling time, the short defrosting time during the cooling process is included in the cooling time, which can make the design of the main control board simpler.

Preferably in this embodiment, the main control board exits the control step when any of the following exit conditions are met, and the exit conditions include:

Q1—control gear change;

Q2—The temperature of the refrigerated compartment is greater than or equal to a specific value;

Q3—The main control board detects that the opening time of the refrigerator door exceeds a certain value;

Q4 - The execution time of step C1 reaches a certain value.

Regarding Q1, that is to say, when the user adjusts the gear and causes the control gear to change, for example, when the user adjusts the gear of the refrigerator through a control switch such as a button, the main control board stops the control step and executes the control step that the user adjusted to. The control flow corresponding to the gear. This is to respect the user's choice.

Regarding Q2, during the strong cooling process, the low temperature compensation heating wire will be turned on to prevent the room temperature of the refrigerating room from being too low. On the contrary, if the temperature of the refrigerating room is greater than or equal to a certain value, for example, when it is greater than or equal to 8°C, it means that the low temperature compensation heating If the heating time of the wire is too long, not only the low temperature compensation heating wire may be damaged, but also the food in the refrigerated room may be damaged. At this time, the main control board exits the control step to avoid the above adverse consequences.

Regarding Q3, because during the strong cooling process, the low temperature compensation heating wire will be turned on to prevent the room temperature of the refrigerating room from being too low, that is, the low temperature compensation heating wire will increase the temperature of the refrigerating room. For example, when the value exceeds 5 banknotes, it is judged that the user may feel that the inner tank of the refrigerating compartment is partially overheated and doubt the performance of the refrigerator. At this time, the main control board exits the control step, which can alleviate the user's concern.

Regarding Q4, step C1 is to perform strong cooling. If the time of strong cooling reaches a certain value, such as 26 hours, it means that the running time of the compressor has also reached a certain value. At this time, the main control board exits the control step to avoid compressor Decreased life due to prolonged operation.

In this embodiment, preferably, the main control board stops executing the detection step when executing the control step; after the main control board exits the control step, the main control board executes the detection step once at a specific time interval.

When the main control board is executing the control step, it stops executing the detection step, which can reduce the burden of the main control board; and when the main control board exits the control step, the main control board executes the detection step at a certain interval, for example, every one minute, which can be done at any time. When needed, the freezer compartment can be quickly cooled to meet user needs.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not used to limit the protection scope of the present invention. Changes should all be included within the protection scope of the present invention.

Claims (9)

1. a kind of refrigerator, the refrigerator includes refrigerator room and freezing compartment, the wind of the refrigerator room and the freezing compartment Road keeps connection, and the refrigerator further includes the master control borad for controlling refrigerator operation, and the master control borad executes detecting step and control step Suddenly, it is characterised in that:

The detecting step includes: whether step E1-detection freezing compartment temperature is higher than particular value, and warm in specific time Increase in whether certain value；

The rate-determining steps include: step C1-when step E1 is true, and master control borad controls the operation of compressor prime time.

2. refrigerator according to claim 1, it is characterised in that: the detecting step further include: the step E2-master control Whether plate detection refrigerator door closes, and when step E1 and E2 are true, master control borad controls the operation of compressor prime time.

3. refrigerator according to claim 2, it is characterised in that: the step E1 and step E2 out-of-order requirement.

4. refrigerator according to claim 1, it is characterised in that: the refrigerator further includes the low temperature close to the refrigerator room Heater strip is compensated, the rate-determining steps further include step C2-opening low temp compensating heater strip.

5. refrigerator according to claim 4, it is characterised in that: the step C1 and step C2 out-of-order requirement.

6. refrigerator according to claim 4, it is characterised in that: be additionally provided with defrosting sensor, the control on the refrigerator When step further includes that step C3-master control borad detects that the refrigerator is in defrost state by the defrosting sensor, institute Master control borad is stated to stop executing step C1 and C2.

7. refrigerator according to claim 6, it is characterised in that: the execution time of the master control borad recording step C1, work as ice When case is in defrost state stopping execution step C1, the master control borad continues the execution time of recording step C1.

8. refrigerator according to claim 1, it is characterised in that: the master control borad when following any exit criteria meets, The rate-determining steps are exited, the exit criteria includes:

Condition Q1-control gear changes；

Condition Q2-refrigerator room temperature is more than or equal to particular value；

Condition Q3-master control borad detects that the time that the cold sotrage door is opened is more than particular value；

Condition Q4-step C1 execution time reaches particular value.

9. refrigerator according to claim 1, it is characterised in that: the master control borad stops executing when executing rate-determining steps Detecting step；For the master control borad after exiting rate-determining steps, master control borad interval specific time executes one-time detection step.