CN114111150B

CN114111150B - Refrigerator and temperature adjusting method thereof

Info

Publication number: CN114111150B
Application number: CN202010905560.7A
Authority: CN
Inventors: 李同琴
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2023-08-18
Anticipated expiration: 2040-09-01
Also published as: CN114111150A

Abstract

The invention provides a refrigerator and a temperature regulating method thereof, which relate to the technical field of household appliances and comprise the following steps: the box body is provided with an evaporator cavity and at least one refrigeration compartment; at least two air doors are arranged between each refrigeration compartment and the evaporator cavity, and the ventilation areas of the at least two air doors are different from each other; the evaporator and the fan are arranged in the evaporator cavity, and the fan is positioned between the evaporator and the air door; the control system is connected with the air door control and controls the opening or closing of any air door. In the technical scheme, the refrigerator only adopts a single set of control system to carry out temperature regulation control on the refrigerating compartment, so that the occupation of the inner space of the refrigerator can be effectively reduced, the space utilization rate of the refrigerator is improved, and the control system and the plurality of air doors form logic fit, so that the cold quantity of the refrigerating compartment can be controlled in a targeted manner, the refrigerating compartment can form a correspondingly adapted temperature zone under different use states, and different use requirements of users are met.

Description

Refrigerator and temperature adjusting method thereof

Technical Field

The invention relates to the technical field of household appliances, in particular to a refrigerator and a temperature regulating method thereof.

Background

The refrigeration of the refrigerator is generally realized by adopting an evaporator, and the evaporator can conduct the generated cold energy to the refrigeration compartment, so that the refrigeration of the refrigeration compartment is realized. At present, the refrigerator generally adopts double systems to control the conduction of the refrigerating capacity, but two sets of refrigerating systems occupy large space, thereby reducing the volume rate of the refrigerator and causing the waste of space.

Disclosure of Invention

The invention aims to provide a refrigerator and a temperature regulating method thereof, which are used for solving the technical problem of low volume rate of the refrigerator in the prior art.

The invention provides a refrigerator, comprising:

a housing having an evaporator chamber and at least one refrigeration compartment; at least two air doors are arranged between each refrigeration compartment and each evaporator cavity, and the ventilation areas of the at least two air doors are different from each other;

the evaporator and the fan are arranged in the evaporator cavity, and the fan is positioned between the evaporator and the air door;

and the control system is in control connection with the air door and controls the opening or closing of any air door.

Further, a volute structure surrounding the fan is arranged in the evaporator cavity, and the volute structure corresponds to the air door;

the volute structure has a slope that gradually slopes upward in a direction gradually approaching the damper.

Further, the inner wall surface of the volute structure comprises at least one part of arc-shaped surface, and the arc-shaped surface is positioned at one side close to the fan;

the curvature of the arc-shaped surface is between 1/5m < -1 > and 1/4m < -1 >.

Further, the control system includes:

the temperature sensor is used for acquiring temperature data information of the refrigerating compartment;

the data collector is used for collecting opening and closing data information and/or refrigerating data information of the refrigerating compartment;

and the controller is in control connection with the temperature sensor, the data acquisition device and the air door and is used for controlling the opening or closing of the air door according to the opening and closing data information, the refrigerating data information and/or the temperature data information.

The invention also provides a temperature regulating method of the refrigerating compartment of the refrigerator, which comprises the following steps of:

and acquiring the operation data information of the refrigeration compartment, and controlling the air door of the refrigeration compartment to be opened or closed according to the operation data information so that the temperature of the refrigeration compartment reaches the preset temperature.

Further, the operation data information comprises opening and closing data information, temperature data information and refrigeration data information of the refrigeration compartment.

Further, the number of the air doors arranged between each refrigeration compartment and the evaporator cavity is 2.

Further, the on-off data information comprises an on signal and an off signal, and the temperature data information comprises a set temperature U, a real-time temperature Y and a preset temperature difference T;

if the acquired opening and closing data information is the opening signal, opening two air doors;

if |Y-U| < T is satisfied, both of the dampers are closed.

Further, the refrigeration data information comprises operation time K, downtime R and preset operation ratio A;

if the acquired opening and closing data information is the closing signal, judging whether K/(K+R) > A is met; if the air door is satisfied, opening two air doors, otherwise, only opening the air door with small ventilation area;

if |Y-U| < T is satisfied, both of the dampers are closed.

Further, the preset operation ratio A is 80%; and/or, the preset temperature difference T is 0.5 ℃.

In the technical scheme, the refrigerator only adopts a single set of control system to carry out temperature regulation control on the refrigerating compartment, so that the occupation of the inner space of the refrigerator can be effectively reduced, the space utilization rate of the refrigerator is improved, and the control system and the plurality of air doors form logic fit, so that the cold quantity of the refrigerating compartment can be controlled in a targeted manner, the refrigerating compartment can form a correspondingly adapted temperature zone under different use states, and different use requirements of users are met. In the refrigerator with the same volume, the control system occupies less space, and more internal space can be divided into the refrigerating compartments for accommodating more foods.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a schematic view of a scroll casing structure according to an embodiment of the present invention 1;

FIG. 3 is a schematic view of a scroll casing structure according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating connection of a control system according to an embodiment of the present invention;

fig. 5 is a flowchart of a temperature adjustment method according to an embodiment of the present invention.

Reference numerals:

1. a case; 2. an evaporator; 3. a blower; 4. a control system;

11. an evaporator chamber; 12. a refrigeration compartment; 13. a damper; 14. a volute structure;

21. a temperature sensor; 22. a data collector; 23. and a controller.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the refrigerator provided in this embodiment includes:

a tank 1, said tank 1 having an evaporator chamber 11 and at least one refrigerated compartment 12; at least two air doors 13 are arranged between each refrigeration compartment 12 and the evaporator cavity 11, and the ventilation areas of the at least two air doors 13 are different from each other;

an evaporator 2 and a fan 3, the evaporator 2 and the fan 3 being mounted in the evaporator chamber 11, the fan 3 being located between the evaporator 2 and the damper 13;

and the control system 4 is in control connection with the air door 13 and controls the opening or closing of any air door 13.

Therefore, compared with the double control system 4 in the prior art, the refrigerator adopts the single control system 4 to regulate the temperature of the refrigerating compartment 12, so that the occupation of the internal space of the refrigerator can be effectively reduced, and the space utilization rate of the refrigerator can be improved. In the same volume refrigerator, the control system 4 occupies less space, and more internal space can be divided into the refrigerating compartments 12 for accommodating more foods and the like. Furthermore, the single control system 4 can effectively reduce the cost and the installation difficulty and the failure rate.

Although the refrigerator is controlled by a single system, at least two air doors 13 are designed on the refrigerating compartment 12, and the ventilation areas defining the at least two air doors 13 are different. For example, the number of the air doors 13 may be set to two, wherein the ventilation area of one air door 13 is larger than that of the other air door 13, which corresponds to the case where one large air door 13 and one small air door 13 are provided on the refrigerating compartment 12. By means of logical matching of the large air door 13 and the small air door 13 with the single control system 4, the cold quantity of the refrigeration compartment 12 can be controlled in a targeted mode, so that the refrigeration compartment 12 can form correspondingly adapted temperature areas under different use states, and different use requirements of users are met.

The number of the refrigerating compartments 12 may be selected according to the need. For example, when the number of the refrigerating compartments 12 is plural, a proper number of the dampers 13 may be provided between each refrigerating compartment 12 and the evaporator chamber 11 according to the need, so that the amount of cooling capacity of the corresponding refrigerating compartment 12 is controlled by the same principle.

Meanwhile, a proper number of dampers 13 may be provided on each refrigerating compartment 12 according to the need, for example, when the number of the dampers 13 is two, the ventilation areas of the two dampers 13 may be different, thereby forming one large damper 13 and one small damper 13. When the number of the dampers 13 is plural, the ventilation area of the plural dampers 13 needs to be at least two types, that is, at least one small damper 13 needs to be provided and at least one large damper 13 needs to be provided, so that a small amount of cooling power is inputted through the small damper 13 and a large amount of cooling power is inputted through the large winds.

The ventilation area of the damper 13 (corresponding to the cross-sectional area of the damper 13) may be determined according to the wind speed of the cold input, for example, the ratio of the cold to the wind speed may be used to determine the ventilation area of the damper 13. Accordingly, the ventilation area of the damper 13 may be determined according to various factors such as different models and performances of refrigerators, and the size of the refrigerating compartment 12. The number of dampers 13, the size of the ventilation area, etc. can be set by those skilled in the art according to the need, and are not limited herein.

As shown in fig. 2 and 3, a volute structure 14 surrounding the fan 3 is arranged in the evaporator cavity, and the volute structure 14 corresponds to the air door 13; the volute structure 14 has a slope that gradually slopes upward in a direction gradually approaching the damper 13. Therefore, the control system 4 can also cooperate with the volute structure 14 to provide air supply effect when the fan 3 is used for delivering cold into the refrigeration compartment 12 when the air door 13 is controlled to be opened or closed.

The scroll casing structure 14 is structured to have a backward tilting structure, as shown in fig. 3, that is, the scroll casing structure 14 has a gradually upward tilting slope (i.e., in the downward to upward direction in fig. 3) in the direction gradually approaching the damper 13, so that the backward tilting structure is structured to effectively increase the upper air supply capacity (i.e., relative to the damper 13), and to maintain the thickness as uniform as possible at a position far from the damper 13, so that the scroll casing structure 14 is positioned at the same horizontal line at this portion, which can effectively reduce the resistance.

Wherein the inner wall surface of the volute structure 14 comprises at least a part of arc-shaped surface, and the arc-shaped surface is positioned at one side close to the fan 3; the curvature of the arc-shaped surface is 1/5m ^-1 To 1/4m ^-1 Between them. Wherein the inner wall is designed as an arc surface at the position of the volute structure 14 close to the air door 13, and the curvature of the arc surface can be limited to 1/5m ^-1 To 1/4m ^-1 And the upper air supply capacity can be increased, meanwhile, the static pressure of the fan 3 is collected, the whole compression resistance of the fan 3 is improved, and the stability of air supply of the refrigerator is realized. For example, the curvature of the arcuate surface may be 0.2m ^-1 、0.21m ^-1 、0.22m ^-1 、0.23m ^-1 、0.24m ^-1 Or 0.25m ^-1 Etc.

As shown in fig. 4, in an embodiment of the control system 4, the control system 4 may include:

a temperature sensor 21, wherein the temperature sensor 21 is used for collecting temperature data information of the refrigeration compartment 12;

the data collector 22 is used for collecting opening and closing data information and/or refrigerating data information of the refrigerating compartment 12;

the controller 23 is in control connection with the temperature sensor 21, the data collector 22 and the air door 13, and is used for controlling the opening or closing of the air door 13 according to the opening and closing data information, the refrigerating data information and/or the temperature data information.

The temperature sensor 21 may be disposed in the refrigerating compartment 12, or may be disposed at another position of the refrigerator, to directly or indirectly collect temperature data information of the refrigerating compartment 12. Wherein the refrigeration data information may be collected data information of the evaporator 2, and thus, the data collector 22 may be directly data-connected with the evaporator 2, thereby directly obtaining refrigeration data information of the evaporator 2. Or, the data collector 22 can also be connected with the control center in a wireless way, so that refrigeration data information of the evaporator 2 is indirectly collected through the control center, and particularly, the integration of the intelligent home is realized in a remote control mode matched with cloud control.

With continued reference to fig. 5, the invention also provides a temperature regulating method for a refrigerating compartment of a refrigerator, according to which the steps are as follows: and acquiring the operation data information of the refrigeration compartment, and controlling the air door of the refrigeration compartment to be opened or closed according to the operation data information so that the temperature of the refrigeration compartment reaches the preset temperature. Accordingly, the current operation state of the refrigerating compartment 12 of the refrigerator can be acquired based on the acquired operation data information, thereby forming targeted control of opening or closing of the damper 13 according to the single control system 4.

In one embodiment, the operation data information may include on-off data information, temperature data information, and cooling data information of the cooling compartment. When judging that the temperature of the refrigerating compartment 12 in the refrigerator is higher at this time according to the refrigerating data information and the temperature data information, the requirement of increasing the cold input is proved at this time, so that all the air doors 13 can be opened to provide maximum cold conveying for the refrigerating compartment 12, and the refrigerating compartment 12 can be ensured to reach the preset temperature quickly.

Similarly, when the temperature of the refrigerating chamber 12 in the refrigerator is judged to be suitable or at the standard temperature according to the refrigerating data information and the temperature data information, the fact that the input of the cooling capacity is not increased is proved to be unnecessary at the moment, so that the opening of the number of the air doors 13 can be reduced, or only the air door 13 with the smallest ventilation area, namely the small air door 13, is opened, the cooling capacity provided to the refrigerating chamber 12 is reduced, the refrigerating chamber is operated at low power, and the balance between the energy consumption and the refrigerating effect is ensured.

In addition, the refrigeration data information of the evaporator 2 can also be used as a basis for opening the number of the air doors 13. For example, when the operation time of the evaporator 2 is long, a large amount of cold energy is formed in the evaporator chamber 11, so that it is necessary to properly open more dampers 13 or open all the dampers 13 to input the cold energy into the refrigerating compartment 12, so that a large amount of cold energy is prevented from staying in the evaporator chamber 11 and not being utilized.

Similarly, if the evaporator 2 is operated for a short period of time, less cold is formed in the evaporator chamber 11, and so too many dampers 13 need not be opened at this time. The evaporator 2 itself can also adjust its working state according to the temperature of the refrigeration compartment 12, so the working time of the evaporator 2 is used as the basis for controlling the opening or closing of the air door 13, and the temperature state of the refrigeration compartment 12 can also be indirectly and flexibly adjusted.

In this logic determination and control process, the open or closed state of the refrigeration compartment 12 may be first determined. Whether the cooling compartment 12 is opened or not may be determined in various ways, for example, the temperature sensor 21 may monitor the ambient temperature of the cooling compartment 12 in real time, and if the ambient temperature rises instantaneously, it may be determined that the cooling compartment 12 is opened (the refrigerator door is opened) at this time, and a large amount of cool air flows into the external environment of the cooling compartment 12 due to the opening of the cooling compartment 12.

In addition, a monitoring device can be arranged between the refrigeration compartment 12 and the door body, and a signal can be sent out after the refrigeration compartment 12 is opened, so that the control system 4 can know the opening condition of the refrigeration compartment 12 through the received signal. Suitable monitoring devices may be employed by those skilled in the art as desired, and are not limited herein.

The temperature adjustment method will be described by taking an example in which two of the dampers 13 are provided to each of the refrigerating compartments 12, with reference to fig. 5. The on-off data information comprises an on signal and an off signal, and the temperature data information comprises a set temperature U, a real-time temperature Y and a preset temperature difference T; if the acquired opening and closing data information is the opening signal, opening two air doors; if |Y-U| < T is satisfied, both of the dampers are closed.

Thus, when the control system 4 determines that the refrigeration compartment 12 is open, the control system 4 controls the dampers 13 to be fully open. At this time, after the cooling compartment 12 is opened, a large amount of cool air in the cooling compartment 12 instantaneously flows into the external environment of the cooling compartment 12, thereby causing a large amount of cool air to flow out to raise the temperature in the cooling compartment 12. Therefore, at this time, the control system 4 is required to control more dampers 13 or all dampers 13 to open, thereby inputting a large amount of cold into the refrigeration compartment 12 to maintain the temperature level in the refrigeration compartment 12.

At this time, |y-u| < T indicates that the temperature difference between the real-time temperature in the cooling compartment 12 and the set temperature is within the preset range, so that the real-time temperature in the cooling compartment 12 is in a state close to the set temperature, and at this time, it is not necessary to input a large amount of cooling energy into the cooling compartment 12 to maintain the temperature of the cooling compartment 12, so that the damper 13 can be completely closed to maintain the current state.

With continued reference to FIG. 5, the refrigeration data information includes an operation time K, a downtime R, and a preset operation ratio A; if the acquired opening and closing data information is the closing signal, judging whether K/(K+R) > A is met; if the air door is satisfied, opening two air doors, otherwise, only opening the air door with small ventilation area; if |Y-U| < T is satisfied, both of the dampers are closed.

Therefore, when the control system 4 determines that the refrigeration compartment 12 is closed, if K/(k+r) > a, the control system 4 controls the damper 13 to be fully opened; if K/(K+R) +.A, the control system 4 controls the damper 13 with the smallest ventilation area to be opened.

At this time, K/(k+r) > a indicates that the operation time of the evaporator 2 is longer than the preset operation time, and the evaporator 2 generates a large amount of cold energy based on the longer operation time, so that the control system 4 is required to control more dampers 13 or all of the dampers 13 to open so as to be able to deliver the large amount of cold energy into the cooling compartment 12, and use the part of the cold energy. On the contrary, if K/(k+r) +.a, the operation time of the evaporator 2 is lower than the preset operation time, the evaporator 2 will not generate a lot of cold energy based on the shorter operation time, so the control will not need to control more dampers 13 or all the dampers 13 to open, only need to open fewer or smaller ventilation area dampers 13 to properly transfer the part of cold energy into the refrigeration compartment 12.

Wherein, the preset operation ratio a may be set to 80%, that is, when K/(k+r) +.80%, more than 80% of the evaporator 2 is continuously operated and generates cold, whereas when K/(k+r) +.80%, the evaporator 2 is operated and generates cold for less than 80%. In addition, the preset operation ratio a may be set to other values, such as 70%, 75%, 85%, etc., according to the model, performance, etc., of the refrigerator, which are not limited herein.

Meanwhile, |y-u| < T indicates that the temperature difference between the real-time temperature in the cooling compartment 12 and the set temperature is within the preset range, so that the real-time temperature in the cooling compartment 12 is in a state close to the set temperature, and a large amount of cooling energy is not required to be input into the cooling compartment 12 to maintain the temperature of the cooling compartment 12, so that the damper 13 can be completely closed to maintain the current state.

The determination as to whether or not the condition |y-u| < T is satisfied may be applied to control the state in which the cooling chamber 12 is opened or to control the state in which the cooling chamber 12 is closed. That is, when the refrigerated compartment 12 is closed, the open or closed state of the damper 13 may be controlled by |y-u| < T to ensure that the temperature within the refrigerated compartment 12 is maintained in an acceptable state. Meanwhile, when the cooling compartment 12 is opened, a large amount of cooling capacity is released, but if the temperature in the cooling compartment 12 can still meet |y-u| < T, then the damper 13 may be closed completely at this time, and the current state may be maintained.

Wherein, the preset temperature difference T may be set to 0.5 ℃, i.e. when |y-u| <0.5 ℃, the real-time temperature in the refrigerating chamber 12 is different from the set temperature by only 0.5 ℃. In contrast, when |y-u| <0.5 ℃, the real-time temperature in the refrigeration compartment 12 differs by more than 0.5 ℃ from the set temperature, so the temperature difference is larger at this time, and active intervention and control of cold input are required, as described above.

In a specific embodiment, as shown in fig. 5, the control system 4 may dynamically control the opening and closing of the damper 13 in combination with the on-off data information, the temperature data information, and the cooling data information in the cooling compartment 12. For example, in a normal use state of the refrigerator, the damper 13 having the smallest ventilation area may be controlled to be opened to maintain the temperature in the refrigerating compartment 12 in a set state. At this time, when the user uses the refrigerator, it is judged whether the refrigerating compartment 12 is opened, and if so, all the dampers 13 are controlled to be opened. At this time, it is continued to judge whether the temperature is satisfied with the temperature of the air door 13 being <0.5 ℃, and if the temperature is satisfied with the temperature of the air door 13 being <0.5 ℃, the air door is controlled to be fully closed.

Meanwhile, if not, judging whether K/(K+R) +.80% is satisfied. If K/(K+R) +.80%, then continuing to control all the air doors 13 to open, if K/(K+R) +.80%, then controlling the air door 13 with the smallest ventilation area to open. At this time, it may be continued to judge whether or not the temperature of the air door is satisfied with the temperature of the air door is <0.5 ℃, and if the temperature is satisfied with the temperature of the air door is <0.5 ℃, the air door 13 is controlled to be closed.

Since the specific structure, functional principle and technical effect of the refrigerator are described in detail above, they will not be described in detail herein. Therefore, any technical content related to the refrigerator can be referred to the above description.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A refrigerator, comprising:

the control system is in control connection with the air door and controls the opening or closing of any air door;

the control system comprises a data collector, wherein the data collector is used for collecting opening and closing data information and refrigerating data information of the refrigerating compartment;

the refrigeration data information comprises operation time K, downtime R and preset operation ratio A;

and the control system is used for judging whether K/(K+R) > A is met according to the acquired opening and closing data information as a closing signal, controlling the opening of the two air doors if the K/(K+R) > A is met, and otherwise, only controlling the opening of the air doors with small ventilation area.

2. The refrigerator of claim 1, wherein a volute structure surrounding the fan is disposed in the evaporator chamber, the volute structure corresponding to the damper;

3. The refrigerator of claim 2, wherein the inner wall surface of the scroll casing structure includes at least a portion of an arc surface, the arc surface being located at a side close to the blower;

the curvature of the arc-shaped surface is 1/5m ^-1 To 1/4m ^-1 Between them.

4. The refrigerator of any one of claims 1-3, wherein the control system comprises:

5. A method for regulating the temperature of a refrigeration compartment of a refrigerator according to any one of claims 1 to 4, comprising the steps of:

acquiring operation data information of the refrigeration compartment, and controlling the air door of the refrigeration compartment to be opened or closed according to the operation data information so that the temperature of the refrigeration compartment reaches a preset temperature;

if the acquired opening and closing data information is the closing signal, judging whether K/(K+R) > A is met; and opening two air doors if the air door is satisfied, otherwise, opening only the air door with small ventilation area.

6. The temperature regulating method of claim 5, wherein the operational data information comprises on-off data information, temperature data information, and refrigeration data information of the refrigeration compartment.

7. The method of tempering according to claim 6, wherein the number of said dampers provided between each said refrigeration compartment and said evaporator cavity is 2.

8. The temperature regulating method according to claim 7, wherein the on-off data information includes an on signal and an off signal, and the temperature data information includes a set temperature U, a real-time temperature Y, and a preset temperature difference T;

if |Y-U| < T is satisfied, both of the dampers are closed.

9. The temperature regulating method according to claim 8, characterized in that the preset operating ratio a is 80%; and/or, the preset temperature difference T is 0.5 ℃.