WO2015103935A1

WO2015103935A1 - Refrigerator, devices for producing air curtain within same, and control method therefor

Info

Publication number: WO2015103935A1
Application number: PCT/CN2014/095681
Authority: WO
Inventors: 贾振飞; 李鹏
Original assignee: 海尔集团公司; 青岛海尔股份有限公司
Priority date: 2014-01-13
Filing date: 2014-12-30
Publication date: 2015-07-16
Also published as: CN104344629A; CN104344629B

Abstract

A refrigerator (100) and a control method for devices (6) for producing an air curtain within same. The refrigerator (100) comprises the box body (1) of a refrigeration chamber (10), a door for opening and closing said refrigeration chamber (10), a door open/closed detection element (3) arranged between the box body (1) and the door, and a first and a second temperature-sensing elements (4, 5) for sensing the temperature within the refrigeration chamber (10) near the door and away from the door respectively. Also arranged on the box body (1) and at opposite sides of the opening within the refrigeration chamber (10) are air curtain production devices (6). Each air curtain production device (6) comprises an air outlet (61) arranged within the refrigeration chamber (10) and near the opening thereof, and a fan (62) arranged outside of each such air outlet (61). On the basis of feedback received from the door open/closed detection element (3) and the first and second temperature-sensing elements (4, 5), a control device (7) controls the forward or rearward rotation of the fans (62) of the air curtain production devices (6).

Description

Control method of air curtain generating device in refrigerator and refrigerator

Technical field

The present invention relates to a refrigerator, and more particularly to a refrigerator and a wind curtain generating device control method having the air curtain generating device.

Background technique

Refrigerators, as a container that keeps food or other items at a constant low temperature, have become one of the indispensable household appliances in modern homes. Usually, during the use of the refrigerator, the door of the refrigerator compartment should be frequently switched for taking or placing items. When the door is opened, the outside hot air easily enters the refrigerator compartment, and the cold air of the refrigerator compartment is also exposed, which may cause the loss of cold air. In addition, the outside hot air enters the refrigerator and will dew or frost at low temperatures, affecting the refrigerator. The use of the food will also affect the food in the refrigerator. In order to solve the above problems, a Chinese invention patent application No. CN102419057A published on April 18, 2012 discloses a top air blowout anti-exhaust refrigerator which is connected to a refrigerator control circuit at the top. The air curtain machine is provided with a downward air supply opening; when the refrigerator compartment door of the refrigerator is opened, the fan of the air curtain machine operates to blow the wind downward from the air supply opening, thereby separating the airflow inside and outside the refrigeration compartment To avoid loss of cooling capacity.

However, the wind curtain provided by the one-way downward ejector air has a long air outlet distance, and the power requirement of the corresponding fan is large, so that the energy consumption is increased; in addition, the long-distance wind direction is caused by the long-distance air supply. It weakens and is unstable, but it will blow external hot air into the refrigerator compartment or take the internal air-conditioning out of the refrigerator.

Therefore, it is necessary to provide an improved control method for a refrigerator and an air curtain generating device to solve the above problems.

Summary of the invention

An object of the present invention is to provide a refrigerator which is excellent in forming a wind curtain.

Another object of the present invention is to provide a method of controlling an air curtain generating device.

According to an aspect of the present invention, a refrigerator including a cabinet having a refrigerator compartment, a door body that opens and closes the refrigerator compartment, and a door body switch disposed between the cabinet and the door body are provided And a first temperature detecting element and a second temperature detecting element for respectively detecting a temperature in the refrigerator compartment near the opening of the refrigerator compartment and away from the opening, and detecting the switch with the door a measuring device, a control device to which the first temperature detecting element and the second temperature detecting element are connected;

The box body is further respectively provided with a set of air curtain generating devices on opposite sides of the refrigerator compartment near the opening, each set of the air curtain generating device comprising a fan curtain chamber disposed adjacent to the opening in the refrigerator compartment a tuyere, and a fan disposed outside the tuyere;

The control device is connected to the fan and controls the fan to rotate forward or reverse according to feedback information of the door switch detecting element, the first temperature detecting element and the second temperature detecting element.

As a further improvement of the present invention, the casing may be provided with opposite top and bottom sides, and opposite left and right sides, and two sets of the curtain generating devices are disposed opposite to the left side of the casing and Right.

As a further improvement of the present invention, the case may include a liner formed around the refrigerator compartment, an outer casing, and a foam layer disposed between the inner casing and the outer casing;

Each set of the air curtain generating device further includes a housing that houses the fan, the housing being embedded in the foam layer.

As a further improvement of the present invention, the tuyere of each set of the air curtain generating device may be opened on a side wall of the inner casing and communicated with the casing and the refrigerator compartment.

As a further improvement of the present invention, the tuyere may extend in the height direction of the refrigerator;

The air curtain generating device includes a plurality of the fans uniformly disposed along a height direction of the refrigerator.

As a further improvement of the present invention, the tuyere may extend in the height direction of the refrigerator by more than 2/3 of the height of the liner side wall and at an intermediate position of the side wall of the liner in the height direction of the refrigerator.

According to another aspect of the present invention, a control method of an air curtain generating device in a refrigerator including a cabinet having a refrigerator compartment, a door body that opens and closes the refrigerator compartment, and a cabinet are provided a door body detecting detecting element between the door body and a first temperature detecting element and a second temperature detecting device for respectively detecting a temperature in the refrigerator compartment near the refrigerator compartment opening and away from the opening An element, two sets of air curtain generating devices disposed on opposite sides of the case near the opening, and a control device; wherein each set of the air curtain generating device includes a refrigerator compartment disposed adjacent to the opening a tuyere, and a fan disposed outside the tuyere; the control method includes the following steps:

Detecting switch information of the door body;

Controlling, in the opening of the door body, the fan in the two sets of the air curtain generating device to rotate forward, so that the two air outlets are opposite to the wind to form an air curtain on the front side of the refrigerator compartment;

When detecting that the door body is closed, acquiring a temperature difference between the refrigerator compartment near the opening and away from the opening, and comparing the temperature difference with a preset value;

If the temperature difference is greater than the preset value, controlling the fan reversal in the two sets of the air curtain generating device to make the indoor cold air flow in the refrigerator, and the difference in the temperature is not greater than the pre- After the value is set, the fan is controlled to stop rotating.

As a further improvement of the present invention, the preset value may be 1 °C.

As a further improvement of the present invention, the case may include a liner formed around the refrigerator compartment, an outer casing, and a foam layer disposed between the inner liner and the outer casing;

The air curtain generating device may further include a housing that houses the fan, the housing being inlaid in the foam layer.

As a further improvement of the present invention, the tuyere of each set of the air curtain generating device may be opened on the side wall of the inner tank and extend in the height direction of the refrigerator;

Each set of the air curtain generating device includes a plurality of the fans uniformly disposed along the height direction of the refrigerator.

The invention has the beneficial effects that the invention provides a pair of air curtain generating devices respectively on opposite sides of the box body near the opening of the refrigerator compartment, so that a two-way pair of outflow wind is formed when the door body is opened, and the wind is short due to the wind exit distance. Further, a wind curtain with better strength is formed on the front side of the refrigerator compartment, thereby effectively preventing the inflow of air outside the refrigerator and the cooling airflow on the inside. In addition, when the door body is closed, the present invention also detects the temperature near the opening of the refrigerator compartment and away from the opening by the first temperature detecting element and the second temperature detecting component, respectively, and controls the wind curtain generation when the temperature at the opening is high. The fan of the device is reversed, so that the airflow in the interior of the refrigerator compartment is disturbed by the pumping force when the fan is reversed, thereby accelerating the cold air with a lower temperature on the inner side of the refrigerator compartment and the air having a higher temperature near the opening. The temperature inside the refrigerator is in equilibrium.

DRAWINGS

Figure 1 is a perspective view of the inner casing and air curtain generating device of the refrigerator of the present invention;

Figure 2 is a partial cross-sectional front elevational view of the inner liner and air curtain generating device of Figure 1;

Figure 3 is an enlarged view of the circled portion of Figure 2;

Figure 4 is a block diagram showing a portion of the structure of the refrigerator of the present invention.

detailed description

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

1 to 4 show a preferred embodiment of the refrigerator 100 of the present invention. Referring to FIGS. 1 to 4, the refrigerator 100 of the present invention includes a cabinet 1 having a refrigerator compartment 10 (which is well known to those skilled in the art, the refrigerator compartment 10 has an opening at the front end thereof), and the door compartment of the refrigerator compartment 10 is opened. (not shown), the door body switch detecting element 3 disposed between the casing 1 and the door body, and the first for detecting the temperature in the refrigerator compartment 10 near the refrigerator compartment 10 and away from the opening The temperature detecting element 4 and the second temperature detecting element 5, two sets of air curtain generating devices 6, which are disposed on opposite sides of the opening of the cabinet 1 near the refrigerator compartment 10, a refrigeration system (not shown), and a door switch detection The element 3, the first temperature detecting element 4 and the second temperature detecting element 5 are connected to control the control device 7 of the air curtain generating device 6. The refrigeration system of the refrigerator 100 is also connected to the control device 7 and controlled by the control device 7.

Those skilled in the art can understand the above-mentioned technical term "in the first temperature detecting element 4 and the second temperature detecting element 5 for respectively detecting the temperature in the refrigerator compartment 10 near the opening and away from the opening". "Close" and "away" are relative concepts, that is, the first temperature detecting element 4 is closer to the opening of the refrigerator compartment 10, and the second temperature detecting element 5 is farther from the opening of the refrigerator compartment 10. In some embodiments, the distance of the first temperature detecting element 4 from the opening of the refrigerator compartment 10 may be, for example, between 1 mm and 100 mm, preferably between 10 mm and 50 mm; the second temperature detecting element 5 is open to the refrigerator compartment 10 The distance may be, for example, between 50 mm and 300 mm, preferably between 100 mm and 200 mm, and the distance from the first temperature detecting element 4 to the opening of the refrigerator compartment 10 is smaller than the opening of the second temperature detecting element 5 from the opening of the refrigerator compartment 10. the distance.

It will also be understood by those skilled in the art that the technical term "close" in the above-mentioned "two sets of air curtain generating devices 6 disposed on opposite sides of the opening of the refrigerator compartment 10" can be understood as the first There is a distance between a temperature detecting element 4 and the opening of the refrigerator compartment 10, which may be, for example, between 1 mm and 100 mm, specifically, 50 mm, 30 mm, 10 mm, 5 mm, or the like.

Referring to Fig. 1, the casing 1 is provided with opposite top and bottom sides, and opposite left and right sides; in the present embodiment, two sets of air curtain generating devices 6 are oppositely disposed on the left and right sides of the casing 1. The side, so that each group of air curtain generating device 6 requires a shorter air outlet distance, thereby ensuring the wind output strength and lower energy consumption. Of course, the two sets of air curtain generating devices 6 can also be selected to be disposed opposite to the top side of the casing 1 and The bottom side can also achieve the object of the invention.

The casing 1 includes a casing 11, a casing (not shown) formed around the refrigerator compartment 10, and a foam layer (not shown) provided between the liner 11 and the casing (not shown).

2 and 3, each set of air curtain generating device 6 includes a tuyere 61 disposed near the opening of the refrigerator compartment 10, a fan 62 disposed outside the tuyere 61, and a casing 63 housing the fan 62.

In the present embodiment, the tuyere 61 of each set of the air curtain generating device 6 is opened on the (one) side wall of the inner casing 11 and extends in the height direction of the refrigerator 100. The tuyere 61 communicates with the casing 63 and the refrigerator compartment 10 such that the fan 62 in the casing 63 can be blown from the tuyere 61 toward the refrigerator compartment 10, thereby forming an air curtain. In order to make the wind curtain cover the front side of the refrigerator compartment 10, the length of the tuyere 61 in the height direction of the refrigerator 100 is greater than 2/3 of the height of the side wall of the liner 11, and is located on the side of the liner 11 in the height direction of the refrigerator 100. The middle position of the wall. It will be understood by those skilled in the art that the term "intermediate position" herein is understood to mean that the distance from the top end of the tuyere 61 to the top end of the side wall of the inner casing 11 is substantially the same as the distance from the bottom end of the tuyere 61 to the bottom end of the side wall of the inner casing 11. In other embodiments, the distance from the top end of the tuyere 61 to the top end of the side wall of the inner casing 11 may be different from the distance from the bottom end of the tuyere 61 to the bottom end of the side wall of the inner casing 11.

The air curtain generating device 6 includes a plurality of fans 62 uniformly disposed along the height direction of the refrigerator 100 so that the wind blown by the fan 62 uniformly fills the front side of the refrigerator compartment 10, thereby forming a better air curtain. The casing 63 of the accommodating fan 62 is embedded in the foam layer on the outer side of the inner casing 11, so that the inner space of the refrigerator compartment 10 or the space outside the refrigerator 100 can be occupied, so that the overall visual effect of the refrigerator 100 is good.

Of course, the air curtain generating device 6 as a whole may be disposed inside the inner liner 11 or on the side wall of the inner liner 11.

1 to 4, the control device 7 mainly controls the forward rotation of the fan 62 in the air curtain generating device 6 based on the feedback information of the door body detecting element 3, the first temperature detecting element 4, and the second temperature detecting element 5. Or reverse.

In combination with the structural arrangement of the above refrigerator 100 of the present invention, the present invention also relates to a method for controlling the air curtain generating device 6 in the refrigerator 100, comprising the following steps:

The control device 7 receives the switch information of the door body detected by the door body detecting element 3;

Upon detecting the opening of the door, the control device 7 controls the fan 62 in the two sets of air curtain generating devices 6 to rotate forward, so that the two air ports 62 are relatively ventilated, thereby forming a wind on the front side of the refrigerator compartment 10. curtain;

Upon detecting the closing of the door body, the control device 7 acquires the detected values of the first temperature detecting element 4 and the second temperature detecting element 5 to obtain a temperature difference between the refrigerator compartment 10 near the opening and away from the opening, and The temperature difference is compared with a preset value; in this embodiment, the preset value is set to 1 ° C;

If the temperature difference is greater than the preset value, the fan 62 in the two sets of air curtain generating devices 6 is controlled to reverse, so that the cold air in the refrigerator compartment 10 flows forward, and the fan 62 is controlled after the temperature difference is not greater than a preset value. Stop turning.

When the door body is closed, the control device 7 simultaneously controls the operation of the refrigeration system based on the temperature condition in the refrigerator compartment 10, that is, the detected value of the second temperature detecting element 5.

In summary, the present invention provides a pair of air curtain generating devices 6 on opposite sides of the opening of the cabinet 1 near the opening of the refrigerator compartment 10, thereby forming a two-way pair of outflow winds when the door body is opened, and then in the refrigerator compartment. 10 The front side forms a wind curtain with better strength, which effectively prevents the outside air of the refrigerator 100 from flowing in and the inside of the cold air flowing out. Further, when the door body is closed, the present invention also detects the temperature in the refrigerator compartment 10 near the opening and away from the opening by the first temperature detecting element 4 and the second temperature detecting element 5, respectively, and when the temperature is high at the opening The fan 62 that controls the air curtain generating device 6 is reversed, so that the airflow inside the refrigerator compartment 10 is disturbed by the pumping force when the fan 62 is reversed, thereby accelerating the cold air at the inner side of the refrigerator compartment 10 and the air near the opening. The air having a higher temperature flows to each other, so that the temperature inside the refrigerator 100 reaches an equilibrium state.

It should be understood that, although the description is described in terms of embodiments, the embodiments are not intended to be construed as a single. The technical solutions in the embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions set forth above are merely illustrative of the possible embodiments of the present invention, and are not intended to limit the scope of the present invention. Changes are intended to be included within the scope of the invention.

Claims

A refrigerator comprising a cabinet having a refrigerator compartment, a door body for opening and closing the refrigerator compartment, a door body detecting detecting component disposed between the cabinet and the door body, for respectively detecting the refrigerator a first temperature detecting element and a second temperature detecting element adjacent to the opening of the refrigerator compartment and away from the opening, and the door body detecting element, the first temperature detecting element, and the a control device to which the second temperature detecting element is connected;

The utility model is characterized in that: the box body is further provided with a set of air curtain generating devices respectively on opposite sides of the refrigerator compartment close to the opening, each set of the air curtain generating device comprises a refrigerator compartment arranged close to the opening a tuyere at the place, and a fan disposed outside the tuyere;

The control device is connected to the fan and controls the fan to rotate forward or reverse according to feedback information of the door switch detecting element, the first temperature detecting element and the second temperature detecting element.
The refrigerator according to claim 1, wherein:

The box body is provided with opposite top and bottom sides, and opposite left and right sides, and two sets of the air curtain generating devices are disposed opposite to the left and right sides of the box.
The refrigerator according to claim 2, wherein:

The case includes a liner formed around the refrigerator compartment, an outer casing, and a foam layer disposed between the inner liner and the outer casing;

Each set of the air curtain generating device further includes a housing that houses the fan, the housing being embedded in the foam layer.
The refrigerator according to claim 3, wherein:

The tuyere of each set of the air curtain generating device is disposed on a side wall of the inner casing and communicates with the casing and the refrigerator compartment.
A refrigerator according to claim 4, wherein:

The tuyere extends in a height direction of the refrigerator;

Each set of the air curtain generating device includes a plurality of the fans uniformly disposed along the height direction of the refrigerator.
A refrigerator according to claim 5, wherein:

The tuyere has an extension length in the height direction of the refrigerator that is greater than 2/3 of the height of the side wall of the liner, and is located at an intermediate position of the side wall of the liner in the height direction of the refrigerator.
A control method for a wind curtain generating device in a refrigerator, characterized in that:

The refrigerator includes a cabinet having a refrigerator compartment, a door body that opens and closes the refrigerator compartment, and a door body detecting component disposed between the cabinet and the door body to respectively detect the refrigerator compartment a first temperature detecting element and a second temperature detecting element in the room near the opening of the refrigerator compartment and away from the temperature of the opening, and two sets of air curtain generating devices disposed on opposite sides of the box near the opening And a control device; wherein each set of the air curtain generating device comprises a tuyere disposed at the refrigerator compartment near the opening, and a fan disposed outside the tuyere; the control method comprising the steps of:

Detecting switch information of the door body;

Controlling, in the opening of the door body, the fan in the two sets of the air curtain generating device to rotate forward, so that the two air outlets are opposite to the wind to form an air curtain on the front side of the refrigerator compartment;

When detecting that the door body is closed, acquiring a temperature difference between the refrigerator compartment near the opening and away from the opening, and comparing the temperature difference with a preset value;

If the temperature difference is greater than the preset value, controlling the fan reversal in the two sets of the air curtain generating device to make the indoor cold air flow in the refrigerator, and the difference in the temperature is not greater than the pre- After the value is set, the fan is controlled to stop rotating.
A method of controlling an air curtain generating device for a refrigerator according to claim 7, wherein:

The preset value is 1 °C.
A method of controlling an air curtain generating device for a refrigerator according to claim 8, wherein:

The case includes a liner formed around the refrigerator compartment, an outer casing, and a foam layer disposed between the inner liner and the outer casing;

The air curtain generating device further includes a housing that houses the fan, and the housing is embedded in the foam layer.
A method of controlling an air curtain generating device in a refrigerator according to claim 9, wherein:

The tuyere of each set of the air curtain generating device is opened on the side wall of the inner tank and extends in the height direction of the refrigerator;

Each set of the air curtain generating device includes a plurality of the fans uniformly disposed along the height direction of the refrigerator.