WO2018121786A1

WO2018121786A1 - Refrigerator and control method thereof

Info

Publication number: WO2018121786A1
Application number: PCT/CN2017/120380
Authority: WO
Inventors: 李登强; 费斌; 刘金林; 尚亚洲
Original assignee: 青岛海尔股份有限公司
Priority date: 2016-12-30
Filing date: 2017-12-30
Publication date: 2018-07-05
Also published as: CN107062735A; CN107062735B

Abstract

A refrigerator (100) comprises: a drawer (3) arranged in a refrigerating chamber (2), a cover (4) used to open or close the drawer (3); a driving mechanism (5) used to drive the cover (4) to move along a front-back direction in relation to the drawer (3); and a controller. In the embodiment, the driving mechanism (5) drives a movement of the cover (3) to control a temperature inside the drawer (3).

Description

Refrigerator and control method thereof

The present application claims the priority of the Chinese Patent Application Serial No. PCT Application No. PCT Application No.

Technical field

The invention relates to a refrigerator, in particular to a refrigerator with a constant temperature freezing drawer and a control method thereof.

Background technique

Traditional air-cooled refrigerators have large temperature fluctuations due to factors such as working logic and defrosting; especially during defrosting, it will affect the preservation of ingredients and lead to the loss of nutrients. At present, some refrigerators have a sealing cover on the drawer of the freezer compartment, but because there are air outlets and return air vents on the drawer, it is not a strict seal. During the cooling and warming process of the freezer compartment, the temperature inside the drawer The temperature is basically the same as the temperature outside the drawer, and the temperature fluctuation does not greatly improve.

In view of the above problems, it is necessary to provide a refrigerator and a control method thereof to solve the above problems.

Summary of the invention

To achieve the object of the invention, the present invention provides a refrigerator having a constant temperature freezer drawer and a control method therefor.

In order to achieve the object of the present invention, the present invention provides a refrigerator including a refrigerating compartment formed by a liner, a drawer disposed in the refrigerating compartment, and a cover for opening and closing the drawer, The inner casing is provided with a rib extending in the front-rear direction to fix the cover body; the cover body has at least one protrusion protruding toward the rib, and the rib has one and one protrusions a corresponding receiving slot; the refrigerator further includes a driving mechanism for driving the cover body to move in a front-rear direction with respect to the drawer, and a controller communicably connected to the driving mechanism, the driving mechanism including a screw extending in a front-rear direction a motor for driving the rotation of the screw, and a nut sleeved on the screw and engaging with a thread on the screw, the nut being fixedly coupled to the cover body to limit the nut with the screw Rotating and restricting movement of the nut back and forth relative to the cover.

As a further improvement of the present invention, the rear side of the cover body is provided with a limiting member, the limiting member includes a receiving cavity for receiving the nut, and a front wall and a rear wall surrounding the receiving cavity. The outer circumference of the nut has a limiting block that cooperates with the receiving cavity to restrict rotation of the nut with the screw, and the front wall and the rear wall are provided with through holes through which the screw passes. The through hole has a smaller diameter than the outer diameter of the nut.

As a further improvement of the present invention, the limiting member further includes a connecting wall connecting the front wall and the rear wall, and an opening formed on the connecting wall for the nut to be inserted into the receiving cavity; The front wall and the rear wall each have a guide groove recessed inwardly from the side of the opening to the through hole; the width of the guide groove is not less than the diameter of the screw.

As a further improvement of the present invention, the rear side of the cover body is provided with a limiting member, and the limiting member comprises a receiving cavity matched with the nut; the nut is non-circular. .

As a further improvement of the present invention, the refrigerator further includes a refrigeration system that supplies a cooling amount to the refrigerating compartment, a fan that conveys a cooling amount generated by the refrigerating system to a refrigerating compartment, a duct, and a controller, The refrigeration system and the fan are all connected to the controller; the inner casing is provided with an air outlet communicating with the air duct, and when the drawer is located in the cabinet, the air outlet is located at the One side of the drawer.

As a further improvement of the present invention, when the driving mechanism drives the cover body to move in the front-rear direction relative to the drawer, the protrusion is separated from the receiving groove and supported on the rib, and the cover is There is a gap between the body and the drawer; the air outlet is opened at a position on the inner tank corresponding to the slit.

As a further improvement of the present invention, a seal is provided between the cover and the drawer.

In order to achieve the above object, the present invention also provides a method of controlling a refrigerator, the refrigerator further comprising a temperature sensor communicatively coupled to the controller to sense a temperature in the refrigerating compartment, the control method comprising the following step:

A1: determining whether the temperature in the refrigerating compartment rises to a startup temperature, and if so, starting the fan and the compressor and jumping to step a2; if not, the compressor and the fan are kept in a shutdown state;

A2: determining whether the temperature in the refrigerating compartment falls to a temperature lower than the starting temperature by a first preset temperature value, and if so, the controller controls the driving mechanism to drive the cover to move in the front-rear direction to make The protrusion is separated from the receiving groove and supported on the rib, and the process proceeds to step a3; if not, the fan and the compressor continue to operate until the temperature in the refrigerating compartment drops to be lower than the starting temperature. The temperature of a preset temperature value.

A3: determining whether the temperature in the refrigerating compartment chamber drops to a temperature higher than a shutdown temperature by a second preset temperature value, and if so, the controller controls the driving mechanism to drive the cover body to move backwards to cause the The protrusion is received in the receiving slot and jumps to step a4; if not, the cover remains stationary until the temperature in the cooling compartment drops to a temperature higher than the shutdown temperature by a second predetermined temperature value;

A4: determining whether the temperature in the refrigerating compartment falls to a shutdown temperature, and if so, the fan is stopped, the compressor is stopped, and the process returns to step a1; if not, the fan and the compressor remain in operation until the The temperature in the cooling compartment drops to the shutdown temperature.

In order to achieve the above object, the present invention also provides a control method of a refrigerator, the refrigerator further comprising a second temperature sensor for sensing a temperature in the drawer, the second temperature sensor and the controller The communication connection includes the following steps:

B1: determining whether the temperature in the drawer rises to a starting temperature, and if so, the controller controls the fan to start, the compressor starts, the driving mechanism drives the cover to move in the front-rear direction to make the convex Disengaging from the receiving groove and supporting the rib, jumping to step b2; if not, the compressor and the fan remain in a stopped state; the starting temperature is lower than the normally set cooling compartment The boot temperature is lower than the first preset temperature value;

B2: determining whether the temperature in the drawer drops to a shutdown temperature, and if so, the controller controls the fan to stop, the compressor stops, and the driving mechanism drives the cover to move in reverse to cause the protrusion to be received The receiving slot; if not, the fan and the compressor continue to operate until the temperature in the refrigerating compartment drops to a shutdown temperature; the shutdown temperature is higher than a normally set shutdown temperature of the refrigerating compartment Preset temperature value.

In order to achieve the above object, the present invention also provides a control method of a refrigerator, the refrigerator further comprising a temperature sensor for sensing a temperature in the refrigerating compartment, and a temperature for sensing a temperature in the drawer a temperature sensor, the temperature sensor and the second temperature sensor are both communicatively connected to the controller, and the control method comprises the following steps:

C1: determining whether the temperature in the refrigerating compartment rises to a startup temperature, and if so, starting the fan and the compressor and jumping to step c2; if not, the compressor and the fan are kept in a shutdown state;

C2: determining whether the temperature in the drawer rises to a starting temperature, and if so, the controller controls the fan to start, the compressor starts, the driving mechanism drives the cover to move in the front-rear direction to make the convex Disengaging from the receiving groove and supporting the rib, jumping to step c3; if not, jumping to step c4; the starting temperature is lower than the starting temperature by a first preset temperature value;

C3: determining whether the temperature in the drawer drops to a shutdown temperature, and if so, the controller controls the driving mechanism to drive the cover body to move backwards so that the protrusion is received in the receiving slot and jumps Go to step c4, if no, continue to run step c3; the shutdown temperature is higher than the shutdown temperature by a second preset temperature value;

C4: determining whether the temperature in the refrigerating compartment falls to a shutdown temperature, and if so, the fan is stopped, the compressor is stopped, and the process returns to step c1; if not, the fan and the compressor remain in operation until the The temperature in the cooling compartment drops to the shutdown temperature.

The invention has the beneficial effects that: the invention drives the cover plate to move in the front-rear direction by a driving mechanism, and the cover body and the drawer are separated when the protrusion is separated from the receiving groove and supported on the rib There is a gap therebetween; cold air can be uniformly introduced into the drawer from the periphery from the periphery, so that the temperature in each area of the drawer is uniform; when the refrigeration is not required, the cover seals the drawer, and the drawer is on the drawer No other air outlets are provided, and the sealing effect is good.

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:

FIG. 1 is a perspective view of the refrigerator of the present invention, and the refrigerator only shows the inner tank.

2 is a perspective view of the inner liner of the refrigerator shown in FIG. 1.

3 is a schematic view showing the cooperation of the drawer, the cover body and the driving mechanism of the present invention.

4 is a schematic view showing the cooperation of the cover body and the driving mechanism of the present invention.

Figure 5 is an exploded view of Figure 4.

Figure 6 is a schematic view of Figure 5 at another angle.

detailed description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of the invention shown in the drawings and described in the drawings are merely exemplary, and the invention is not limited to the embodiments.

It is also to be noted that, in order to avoid obscuring the invention in unnecessary detail, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and the description is omitted. Invented other details that have little to do with.

In addition, it should be noted that the terms "comprising", "including", or any other variants are intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, item, or device.

Referring to FIGS. 1 to 6 , a refrigerator 100 according to the present invention includes a refrigerating compartment 2 surrounded by a liner 1 and a refrigeration system (not shown) that supplies a cooling amount to the refrigerating compartment 2 , Cooling amount generated by the refrigeration system is sent to a fan (not shown) and an air duct (not shown) in the refrigerating compartment 2, a drawer 3 provided in the refrigerating compartment 2, and the opening and closing a cover body 4 of the drawer 3, a drive mechanism 5 for driving the cover body 4 to move in the front-rear direction with respect to the drawer 3, and a controller (not shown), and the inner liner 1 is connected to the air duct The air outlet is opened for cold air to enter the refrigerating compartment 2. The refrigeration system, the fan and the drive mechanism 5 are all communicatively coupled to the controller.

a sealing member is disposed between the cover 4 and the drawer 3, for example, the cover 4 has a sealing member that protrudes toward the drawer 3 and cooperates with the opening of the drawer 3; when the cover 4 is When located on the drawer 3, a substantially completely sealed drawer 3 can be formed.

The inner liner 1 is provided with a rib 11 extending in the front-rear direction to fix the cover body 4; the cover body 4 has at least one protrusion 41 protruding toward the rib 11 and the rib 11 The receiving groove 12 has a one-to-one correspondence with the protrusions 41. When the protrusion 41 is located in the receiving groove 12, the cover 4 seals the drawer 3; when the protrusion 41 is separated from the receiving groove 12 and supported on the rib 11, the cover There is a gap between the body 4 and the drawer 3; cold air can enter the drawer 3. Since the slit is an opening around the drawer 3, air is introduced from various directions so that the temperatures in the respective regions in the drawer are uniform.

The driving mechanism 5 includes a screw 51 extending in the front-rear direction, a motor 52 for driving the rotation of the screw 51, and a nut 53 sleeved on the screw 51 and engaging with a thread on the screw 51, A nut 53 is fixedly coupled to the cover body 4 to restrict the nut 53 from rotating with the screw 51 and to restrict the nut 53 from moving back and forth relative to the cover body 4. "The nut 53 is fixedly coupled to the cover 4" means that the position of the nut 53 relative to the cover 4 is fixed when the body is used, but the two can be split.

When the motor 52 drives the screw 51 to rotate, the screw 51 drives the nut 53 to move back and forth, and the nut 53 drives the cover 4 to move back and forth, so that the protrusion 41 is disengaged from the receiving slot 12 and When supported on the rib 11, the cover 4 and the drawer 3 have a slit for allowing cold air to enter the drawer 3.

Specifically, the rear side of the cover body 4 is provided with a limiting member 42. The limiting member 42 includes a receiving cavity (not labeled) for receiving the nut 53 and a front wall 421 surrounding the receiving cavity. a rear wall 422, the outer circumference of the nut 53 has a limiting block that cooperates with the receiving cavity to restrict rotation of the nut 53 with the screw 51, and the front wall 421 and the rear wall 422 are provided with a through hole 426 through which the screw 51 passes, the through hole 426 has a smaller diameter than the outer diameter of the nut 53; thus, when the screw 51 rotates in the through hole 426, the nut 53 does not Rotate inside the containment chamber.

The structure of the limiting block is not limited as long as it can cooperate with the inner wall of the receiving cavity to prevent the nut 53 from rotating. In one embodiment, the nut 53 is configured to be non-circular, the receiving cavity is matched with the shape of the nut 53, and the nut 53 cannot be rotated in the receiving cavity.

The limiting member 42 further includes a connecting wall 423 connecting the front wall 421 and the rear wall 422, and an opening 424 formed on the connecting wall 423 for the nut 53 to be inserted into the receiving cavity; The front wall 421 and the rear wall 422 each have a guide groove 425 recessed inwardly from the side of the opening 424 to the through hole 426; the width of the guide groove 425 is not less than the diameter of the screw 51. In this embodiment, the opening 424 is formed on the connecting wall 423 of the bottom of the limiting member 42 . The size of the opening 424 is not limited. For example, the opening 424 can be opened at the bottom of the limiting member 42 as shown in FIG. 6 . The entire connecting wall 423, that is, the entire connecting wall 423 at the bottom of the limiting member 42 is entirely removed to form the opening 424. When assembled, the nut 53 is cooperatively sleeved on the screw 51, and the nut 53 is inserted into the receiving cavity from the opening 424, and the screw 51 enters the through the guiding groove 425. Through hole 426; easy to install. In the embodiment without the guide groove 425, the nut 53 is first placed in the receiving space, passing through the nut 53 while passing the screw 51 through the through hole 426.

The air outlet is located at one side of the drawer 3, and when the driving mechanism 5 drives the cover 4 to move in the front-rear direction relative to the drawer 3, the protrusion 41 is separated from the receiving slot 12 and supported by On the rib 11, there is a gap between the cover 4 and the drawer 3, and cold air enters the drawer 3 from the slit. Further, the air outlet is opened at a position corresponding to the slot on the inner casing 1; the cold air directly enters the drawer 3 after exiting the air outlet, and the temperature adjustment speed is fast and accurate.

The present invention also provides a control method for the above-described refrigerator 100, in which the refrigerator 100 includes a temperature sensor in communication with the controller to sense a temperature in the refrigerating compartment 2, the control The method includes the following steps:

A1: determining whether the temperature in the refrigerating compartment 2 rises to the starting temperature, and if so, starting the fan and the compressor and jumping to step a2; if not, the compressor and the fan are kept in a stopped state.

A2: determining whether the temperature in the refrigerating compartment 2 drops to a temperature lower than the starting temperature by a first preset temperature value, and if so, the controller controls the driving mechanism 5 to drive the cover 4 in the front-rear direction Moving so that the protrusion 41 is disengaged from the receiving groove 12 and supported on the rib 11 and jumps to step a3; if not, the fan and compressor continue to operate until the refrigerating compartment 2 The temperature is lowered to a temperature lower than the starting temperature by a first preset temperature value; in this embodiment, the first preset temperature is 2 ° C, in the process, the cold air first cools the cooling compartment 2 to a temperature drop of 2 ° C Thereafter, the cover body 4 is moved back and forth, so that cold air enters the drawer 3 from the gap between the cover body 4 and the drawer 3; air of a higher temperature can be prevented from entering the drawer 3, thereby reducing temperature fluctuations in the drawer 3.

A3: determining whether the temperature in the refrigerating compartment 2 drops to a temperature higher than a shutdown temperature by a second preset temperature value, and if so, the controller controls the driving mechanism 5 to drive the cover 4 to move backward So that the protrusion 41 is received in the receiving slot 12, and jumps to step a4; if not, the cover 4 remains stationary until the temperature in the refrigerating compartment 2 drops to a higher temperature than the shutdown temperature The temperature of the second preset temperature value; in the embodiment, the second preset temperature is 2 ° C. In the process, when the temperature of the cooling compartment 2 is higher than the shutdown temperature by 2 ° C, the cover 4 is reset and sealed. The drawer 3 can prevent the lower temperature air from entering the drawer 3, thereby reducing the temperature fluctuation in the drawer 3. In addition, by the cooperation of the cover 4 and the drawer 3, the temperature change in the drawer 3 is small, and the freezing effect is good; And the time when the cold air blows directly into the drawer 3 is reduced, and the moisturizing performance is improved.

A4: determining whether the temperature in the refrigerating compartment 2 drops to a shutdown temperature, and if so, the fan is stopped, the compressor is stopped, and the process returns to step a1; if not, the fan and the compressor remain in operation until The temperature in the refrigerating compartment 2 drops to a shutdown temperature.

In summary, in the control method, the temperature difference inside the drawer 3 is smaller than that of the refrigerating compartment 2, and the temperature change in the drawer 3 is small through the cooperation of the cover 4 and the drawer 3, and the freezing effect is good; and the cold air blows directly inside the drawer 3. Reduced time and improved moisturizing performance.

The present invention also provides a control method of another refrigerator 100. In the embodiment in which the refrigerator 100 includes only a second temperature sensor for sensing the temperature in the drawer 3, the control method includes the following steps:

B1: determining whether the temperature in the drawer 3 rises to a starting temperature, and if so, the controller controls the fan to start, the compressor starts, and the driving mechanism 5 drives the cover 4 to move in the front-rear direction so that The protrusion 41 is disengaged from the receiving groove 12 and supported on the rib 11 and jumps to step b2; if not, the compressor and the fan remain in a stopped state; the starting temperature is lower than the normal setting The starting temperature of the refrigerating compartment 2 is lower than the first preset temperature value; in the embodiment, the first preset temperature is 2 ° C, and the temperature in the drawer 3 is directly sensed by the second temperature sensor to provide cold in real time. The amount is such that the temperature control within the freezing drawer 3 is more precise. In addition, the starting temperature is lower than the normally set opening temperature of the refrigerating compartment 2, and the cooling amount of the drawer 3 can be provided in time, and the temperature in the drawer 3 is reduced.

B2: determining whether the temperature in the drawer 3 drops to a shutdown temperature, and if so, the controller controls the fan to stop, the compressor stops, the drive mechanism 5 drives the cover 4 to move in the reverse direction to make the convex The fan 41 and the compressor continue to operate until the temperature in the refrigerating compartment 2 drops to a shutdown temperature; the shutdown temperature is lower than the normally set cooling compartment. The shutdown temperature of chamber 2 is higher than the second preset temperature value. In this embodiment, the second preset temperature is 2 ° C, and the shutdown temperature is higher than the normally set shutdown temperature of the refrigerating compartment 2 by a second preset temperature value, and the drawer 3 can be stopped in time. The cooling capacity reduces the temperature in the drawer 3; at the same time, the temperature setting limit value in the drawer 3 is located within the temperature setting limit value of the ordinary refrigerating compartment 2, and the temperature can be changed within a small range.

The present invention also provides a control method of another refrigerator 100, which simultaneously includes a temperature sensor for sensing the temperature in the refrigerating compartment 2, and a second temperature sensing the temperature in the drawer 3. In an embodiment of the sensor, the control method comprises the following steps:

C1: determining whether the temperature in the refrigerating compartment 2 rises to a startup temperature, and if so, starting the fan and the compressor and jumping to step c2; if not, the compressor and the fan are kept in a shutdown state;

C2: determining whether the temperature in the drawer 3 rises to a starting temperature, and if so, the controller controls the fan to start, the compressor starts, and the driving mechanism 5 drives the cover 4 to move in the front-rear direction so that The protrusion 41 is disengaged from the receiving groove 12 and supported on the rib 11 and jumps to step c3; if not, jumps to step c4; the starting temperature is lower than the starting temperature. Temperature value. In this embodiment, the first preset temperature is 2 ° C, and the process is: when the compressor and the fan are running, determining whether the drawer 3 needs to be cooled, and the temperature can be controlled more accurately; The temperature is 2 ° C lower than the starting temperature, so that higher temperature air can be prevented from entering the drawer 3, thereby reducing temperature fluctuations in the drawer 3.

C3: determining whether the temperature in the drawer 3 drops to a shutdown temperature, and if so, the controller controls the driving mechanism 5 to drive the cover 4 to move in the reverse direction so that the protrusion 41 is received in the receiving The slot 12, and jumps to step c4, if not, continues to run step c3; the shutdown temperature is higher than the shutdown temperature by a second preset temperature value; in this embodiment, the second preset temperature is 2 °C, the process is to determine whether the drawer 3 needs to be cooled when the compressor and the fan are running, and can control the temperature more accurately; the shutdown temperature is 2 ° C higher than the shutdown temperature, and the temperature can be avoided. Low air enters the drawer 3, thereby reducing temperature fluctuations in the drawer 3.

C4: determining whether the temperature in the refrigerating compartment 2 drops to a shutdown temperature, and if so, the fan is stopped, the compressor is stopped, and the process returns to step c1; if not, the fan and the compressor are kept in operation until The temperature in the refrigerating compartment 2 drops to a shutdown temperature.

In the method, the compressor and the fan are controlled to be turned on by the temperature signal fed back by the temperature sensor, and the temperature signal fed back by the second temperature sensor controls whether to move the cover 4 to the drawer 3 The cooling amount is provided therein; the temperature control inside the drawer 3 is ensured to be accurate, and the temperature of the refrigerating compartment 2 in which the drawer 3 is located is also in a good state, and the temperature fluctuation in the drawer 3 can be further reduced.

In summary, the present invention drives the cover plate 4 to move in the front-rear direction by the driving mechanism 5, and when the protrusion 41 is disengaged from the receiving groove 12 and supported on the rib 11, the cover body 4 and There is a gap between the drawers 3; cold air can be uniformly introduced into the drawer 3 from the periphery from the periphery, so that the temperature in each area of the drawer 3 is uniform; when the cooling is not required, the cover 4 is sealed. The drawer 3 has no other air outlets on the drawer 3, and the sealing effect is good.

It is to be understood that the equivalents of the present invention, which are within the scope of the present invention, should be included within the scope of the invention as claimed.

Claims

A refrigerator includes a refrigerating compartment formed by a liner, a drawer disposed in the refrigerating compartment, and a cover for opening and closing the drawer, wherein the inner casing is provided to extend in the front-rear direction to be fixed a rib of the cover; the cover has at least one protrusion protruding toward the rib, and the rib has a receiving groove corresponding to the protrusion in one-to-one; The refrigerator further includes a driving mechanism for driving the cover body to move in a front-rear direction with respect to the drawer, and a controller communicably connected to the driving mechanism, the driving mechanism including a screw extending in a front-rear direction for driving the screw a rotating motor and a nut sleeved on the screw and cooperating with a thread on the screw, the nut being fixedly coupled to the cover to limit rotation of the nut with the screw and limiting the relative of the nut The cover moves back and forth.
The refrigerator according to claim 1, wherein the rear side of the cover body is provided with a limiting member, and the limiting member comprises a receiving cavity for receiving the nut and a front portion surrounding the receiving cavity. a wall, a rear wall, an outer circumference of the nut having a retaining block that cooperates with the receiving cavity to restrict rotation of the nut with the screw, and the front wall and the rear wall are provided with the screw passing through a through hole having a smaller diameter than the outer diameter of the nut.
The refrigerator according to claim 2, wherein the limiting member further comprises a connecting wall connecting the front wall and the rear wall, and is disposed on the connecting wall for the nut to be placed in the receiving An opening of the cavity; each of the front wall and the rear wall has a channel recessed inwardly from the side of the opening to the through hole; the width of the channel is not less than the diameter of the screw.
The refrigerator according to claim 1, wherein the rear side of the cover body is provided with a limiting member, and the limiting member comprises a receiving cavity matched with the nut; the nut is non-circular. .
The refrigerator according to claim 1, wherein the refrigerator further comprises a refrigeration system that supplies a cooling capacity to the refrigerating compartment, and a fan and a duct that delivers a cooling amount generated by the refrigerating system to a refrigerating compartment. And a controller, the refrigeration system and the fan are all communicatively connected to the controller; the inner casing is provided with an air outlet communicating with the air duct, and when the drawer is located in the cabinet, It is stated that the tuyere is located on one side of the drawer.
The refrigerator according to claim 5, wherein when the driving mechanism drives the cover body to move in the front-rear direction with respect to the drawer, the protrusion is separated from the receiving groove and supported on the rib At this time, the cover body and the drawer have a gap; the air outlet is opened at a position on the inner tank corresponding to the slit.
The refrigerator according to claim 1, wherein a seal is provided between the cover and the drawer.
A refrigerator control method for a refrigerator according to claim 1, wherein the refrigerator further includes a temperature sensor communicably connected to the controller to sense a temperature in the refrigerating compartment, the control method Including the following steps:

A1: determining whether the temperature in the refrigerating compartment rises to a startup temperature, and if so, starting the fan and the compressor and jumping to step a2; if not, the compressor and the fan are kept in a shutdown state;

A2: determining whether the temperature in the refrigerating compartment falls to a temperature lower than the starting temperature by a first preset temperature value, and if so, the controller controls the driving mechanism to drive the cover to move in the front-rear direction to make The protrusion is separated from the receiving groove and supported on the rib, and the process proceeds to step a3; if not, the fan and the compressor continue to operate until the temperature in the refrigerating compartment drops to be lower than the starting temperature. The temperature of a preset temperature value.

A3: determining whether the temperature in the refrigerating compartment chamber drops to a temperature higher than a shutdown temperature by a second preset temperature value, and if so, the controller controls the driving mechanism to drive the cover body to move backwards to cause the The protrusion is received in the receiving slot and jumps to step a4; if not, the cover remains stationary until the temperature in the cooling compartment drops to a temperature higher than the shutdown temperature by a second predetermined temperature value;

A4: determining whether the temperature in the refrigerating compartment falls to a shutdown temperature, and if so, the fan is stopped, the compressor is stopped, and the process returns to step a1; if not, the fan and the compressor remain in operation until the The temperature in the cooling compartment drops to the shutdown temperature.
A refrigerator control method for a refrigerator according to claim 1, wherein the refrigerator further comprises a second temperature sensor for sensing a temperature in the drawer, the second temperature sensor and the The controller communicates, and the control method includes the following steps:

B1: determining whether the temperature in the drawer rises to a starting temperature, and if so, the controller controls the fan to start, the compressor starts, the driving mechanism drives the cover to move in the front-rear direction to make the convex Disengaging from the receiving groove and supporting the rib, jumping to step b2; if not, the compressor and the fan remain in a stopped state; the starting temperature is lower than the normally set cooling compartment The boot temperature is lower than the first preset temperature value;

B2: determining whether the temperature in the drawer drops to a shutdown temperature, and if so, the controller controls the fan to stop, the compressor stops, and the driving mechanism drives the cover to move in reverse to cause the protrusion to be received The receiving slot; if not, the fan and the compressor continue to operate until the temperature in the refrigerating compartment drops to a shutdown temperature; the shutdown temperature is higher than a normally set shutdown temperature of the refrigerating compartment Preset temperature value.
A refrigerator control method for the refrigerator according to claim 1, further comprising a temperature sensor for sensing a temperature in the refrigerating compartment, and a second temperature for sensing a temperature in the drawer The sensor, the temperature sensor and the second temperature sensor are both communicatively connected to the controller, and the control method comprises the following steps:

C1: determining whether the temperature in the refrigerating compartment rises to a startup temperature, and if so, starting the fan and the compressor and jumping to step c2; if not, the compressor and the fan are kept in a shutdown state;

C2: determining whether the temperature in the drawer rises to a starting temperature, and if so, the controller controls the fan to start, the compressor starts, the driving mechanism drives the cover to move in the front-rear direction to make the convex Disengaging from the receiving groove and supporting the rib, jumping to step c3; if not, jumping to step c4; the starting temperature is lower than the starting temperature by a first preset temperature value;

C3: determining whether the temperature in the drawer drops to a shutdown temperature, and if so, the controller controls the driving mechanism to drive the cover body to move backwards so that the protrusion is received in the receiving slot and jumps Go to step c4, if no, continue to run step c3; the shutdown temperature is higher than the shutdown temperature by a second preset temperature value;

C4: determining whether the temperature in the refrigerating compartment falls to a shutdown temperature, and if so, the fan is stopped, the compressor is stopped, and the process returns to step c1; if not, the fan and the compressor remain in operation until the The temperature in the cooling compartment drops to the shutdown temperature.