WO2018121664A1

WO2018121664A1 - Refrigerator

Info

Publication number: WO2018121664A1
Application number: PCT/CN2017/119351
Authority: WO
Inventors: 朱小兵; 陶海波; 刘建如; 姬立胜; 聂圣源; 刘昀曦
Original assignee: 青岛海尔股份有限公司
Priority date: 2016-12-28
Filing date: 2017-12-28
Publication date: 2018-07-05
Also published as: CN106766635B; CN106766635A

Abstract

A refrigerator (100), comprising: a drawer (40) and a positioning mechanism (50), wherein the drawer (40) comprises a box body (41), which is provided with an opening, and a cover body (42), for use in opening and closing the opening; the cover body (42) is movably connected, by means of the positioning mechanism (50), to an inner chamber (21) between a first position and a second position, the height of the first position being greater than the height of the second position; when the box body (41) is pulled out of a compartment (20), the cover body (42) moves from the first position to the second position and stops in the compartment (20) so as to open the opening; when the box body (41) is pushed into the compartment, the box body (41) pushes the cover body to return to the first position from the second position, the cover body (42) sealing and closing the opening.

Description

refrigerator

The present application claims priority to Chinese Patent Application Serial No. No. No. No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

The invention relates to a refrigerator, belonging to the technical field of household appliances.

Background technique

The refrigerator is a commonly used household appliance for storing various foods. With the improvement of the quality of life, people not only have higher and higher requirements for the performance of the refrigerator, but also the preservation performance of the refrigerator drawer, especially for the refrigerator drawer. There are also increasingly high demands. For example, because different foods have different humidity storage requirements, in order to meet these needs, sealed drawers have been added to some refrigerators.

However, the current refrigerator with a sealed drawer has the following problems: on the one hand, the drawer with a simple structure has poor sealing performance, and the high-tightness drawer needs a complicated structure to support the realization, and the compact and high sealing property cannot be coexisted; On the one hand, the current sealed drawers are usually only used in the refrigerating compartment, and the drawers in the freezer compartment are open-type, while the open-type drawers not only have the problem of odor drying, but also the rapid loss of cooling and temperature fluctuations; Nowadays, the humidity of the drawer is usually only used for the humidity adjustment. The sealing of the drawer is not applied to the temperature control, and the control effect on the food is poor, and the optimal storage effect cannot be achieved.

Summary of the invention

In order to at least solve one of the above problems, it is an object of the present invention to provide a refrigerator having a sealed drawer having a simple structure and a good sealing property, thereby solving the problem that the compactness and the high sealing property cannot coexist.

In order to achieve the above object, an embodiment of the present invention provides a refrigerator including a compartment and a drawer housed in the compartment, the drawer including

a box body detachably disposed in the compartment, including an opening formed in an upper portion of the box body, and an edge enclosing the opening;

a cover body disposed at the opening, comprising a cover plate and a sealing ring disposed around a bottom surface of the cover plate;

The refrigerator further includes a positioning mechanism disposed on two sides of the cover plate, and the cover body is movably connected to the inner chamber of the compartment by the positioning mechanism between the first position and the second position, The height of the first position is greater than the height of the second position;

Wherein, when the casing is pulled out of the compartment, the cover moves from the first position to the second position and stops in the compartment to open the opening;

When the casing is pushed into the compartment, the casing pushes the cover back from the second position to the first position, the cover covers the opening and the edge abuts The lower surface of the seal ring seals the opening.

According to a further improvement of an embodiment of the present invention, the positioning mechanism includes a fixing member and a guiding groove matched with the fixing member, and the fixing member protrudes from one of a side surface of the cover plate and the inner casing. The guiding groove is recessed on the other side of the cover plate and the inner casing, and the fixing member is movable along the extending direction of the guiding groove to make the cover body in the first position and the Reciprocating between the second positions.

According to a further improvement of an embodiment of the present invention, the positioning mechanism is disposed in at least two pairs spaced apart from each other, and each pair of the positioning mechanisms are respectively disposed opposite to the two sides of the cover.

As a further improvement of an embodiment of the present invention, the guiding groove is arranged to extend along a circular arc line; in any two of the guiding grooves, the arc of the relatively front guiding groove is larger than the guiding groove corresponding to the rear The curvature.

As a further improvement of an embodiment of the invention, the sealing ring is provided as a flexible material.

According to a further improvement of an embodiment of the present invention, the inner tank is provided with a limiting portion, and when the cover body is in the first position, the limiting portion is applied to the cover body to resist the force, Resilience has a vertical downward component.

According to a further improvement of an embodiment of the present invention, the inner casing includes a inner tank groove corresponding to two sides of the cover body, the limiting portion is disposed as an upper end wall of the inner tank groove, and the cover body faces two The side extends into the inner tank groove; wherein, when the cover body is in the first position, the upper end wall abuts against a top surface of the cover plate.

According to a further improvement of an embodiment of the present invention, the inner tank groove further includes a lower end wall disposed opposite the upper end wall; the case body includes a side edge fitted into the inner tank groove, the side edge including An upper end surface constituting the edge, and a lower end surface disposed opposite to the upper end surface; wherein, when the case is pushed into the compartment, the lower end surface is attached to the lower end wall, and the The upper end surface abuts the lower surface to deform the seal ring.

According to a further improvement of an embodiment of the present invention, a front end of the cover body is provided with a first guiding slope, and a rear end of the box body is provided with a second guiding slope; wherein when the box is pushed into the compartment And the first guiding slope and the second guiding slope cooperate with each other to apply a pushing force to the cover body, the driving force has a vertical upward force component and a horizontal backward The force component.

According to a further improvement of an embodiment of the present invention, the casing further includes a mating surface adapted to the shape of the first guiding bevel, the first guiding bevel when the casing is pushed into the compartment Can be attached to the mating surface.

Compared with the prior art, the present invention has the following beneficial effects: by the cooperation of the box body and the cover body, especially the sealing ring and the edge abut each other, the sealing of the drawer can be realized under the gravity of the cover body itself, and then The cold storage of the food in the drawer accommodating cavity is ensured; and the positioning mechanism eliminates the need to manually operate the cover body, and the drawer can be sealed and opened only by pushing and pulling the box body, the structure is simple and the operation is convenient, thereby achieving a simple structure and a high seal. The dual effect of sex.

DRAWINGS

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

2 is a schematic view of the drawer in a push-in state according to an embodiment of the present invention;

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

Figure 4 is a schematic view of the drawer in an extracted state according to an embodiment of the present invention;

5 is a schematic structural view of a refrigerator in a rapid cooling mode according to an embodiment of the present invention;

Fig. 6 is a schematic view showing the structure of the refrigerator in a constant temperature mode according to an embodiment of the present invention.

detailed description

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

It is to be understood that, in the description of the present invention, the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", The orientation or positional relationship of "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the side of the door facing the user facing the refrigerator It is to be understood that the present invention is not limited by the description of the invention, and is not intended to be a . Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to Fig. 1, a refrigerator 100 according to an embodiment of the present invention includes a cabinet 10, a compartment 20, a door body 30, a drawer 40 housed in the compartment 20, and a positioning mechanism 50.

The compartment 20 is defined in the casing 10 and is used for storing articles having a liner 21 and a first opening at the front, through which the compartment 20 can communicate with the outside of the refrigerator 100. The number of the compartments 20 may be set to one or more, and may be specifically set to a refrigerating compartment, a greenhouse, a freezing compartment, and the like divided according to the storage temperature, wherein the freezing compartment usually requires a lower storage temperature, and the greenhouse is changed. Moreover, the refrigerating compartment usually has a high storage temperature.

The door body 30 is movably mounted on the casing 10 and can be used to open and close the first opening. When the door body 30 is opened, the first opening is in an open state, and the compartment 20 is in communication with the outside of the refrigerator 100, and the user can operate the interior of the compartment 20 through the first opening; when the door body 30 is closed, the The first opening is in a gas path sealed state, and the compartment 20 can be used for low temperature storage of food.

The drawer 40 is movably housed in the compartment 20. Referring to Figures 2 to 4, the drawer 40 of the present embodiment is specifically configured to seal the drawer. The drawer 40 includes a case 41 and a cover 42 that encloses a receiving chamber 400 for storing food.

The casing 41 is slidably disposed in the compartment 20 in the horizontal direction by the guide rails 43, and specifically includes a front wall 411, a rear wall 412, two

side walls

413, 414, and a bottom wall 415. The case 41 further includes a second opening formed at an upper portion thereof and an edge enclosing the second opening. Specifically, the edge is formed by the upper wall 411, the rear wall 412, and the upper edges of the two

side walls

413, 414.

The cover body 42 is disposed above the box body 41 and is disposed in cooperation with the second opening, and includes a cover plate 421 and a sealing ring 422. The cover plate 421 includes a top surface 4211 and a bottom surface 4212 disposed opposite to each other. The sealing ring 422 is disposed at a periphery of the bottom surface 4212 and extends into a closed loop shape. The sealing ring 422 includes an upper surface (not labeled) that is closely attached to the bottom surface 4212, and A lower surface 4222 disposed opposite the upper surface.

The positioning mechanism 50 is disposed on the left and right sides of the cover 42 , and the cover 42 is movably connected to the inner casing 21 between the first position and the second position by the positioning mechanism 50 . Wherein the height of the first position is greater than the height of the second position, that is, when the cover 42 moves between the first position and the second position, the movement has a movement in a vertical direction Component.

In the present embodiment, the drawer 40 has a push-in state and a pull-out state.

2 and FIG. 3, when the drawer 40 is in the pushed-in state, the box body 41 is received in the compartment 20, the cover body 42 is located at the first position, and the cover plate 421 covers the second opening. And the edge abuts and supports the lower surface 4222 of the seal ring 422 to seal the second opening. Thus, by the cooperation of the casing 41 and the cover 42, in particular, the sealing ring 422 and the edge abut each other, the high sealing of the drawer 40 is achieved, thereby ensuring the cold storage of the food in the accommodating chamber 400.

Referring to Fig. 4, when the casing 41 is pulled out of the compartment 20, that is, when the drawer 40 is changed from the pushed state to the drawn state, the casing 41 is gradually taken out of the compartment 20, and the cover 42 is subjected to gravity. The lower portion is gradually moved from the first position to the second position and finally stopped in the compartment 20, and the lid body 42 and the casing 41 are separated from each other, and the second opening is opened. In this way, by pulling the box body 41, the unsealing of the drawer 40 can be realized, thereby enabling the user to pick up and place the food through the second opening, and the operation is simple and convenient.

When the casing 41 is pushed into the compartment 20, that is, when the drawer 40 is changed from the extracted state to the pushed state, the lid 42 is returned from the second position to the lower portion by the pushing of the casing 41. The first position is described until the cover 421 covers the second opening and the edge abuts and supports the lower surface 4222 of the seal ring 422 to reseal the second opening.

Compared with the prior art, the refrigerator of the embodiment can ensure the sealing of the drawer by the cooperation of the box body and the cover body, in particular, the sealing ring and the edge abut each other under the gravity of the cover body, thereby ensuring the sealing of the drawer. The drawer accommodates the cold storage of the food in the cavity; and the positioning mechanism eliminates the need to manually operate the cover, and the drawer can be sealed and opened only by pushing and pulling the casing, and the structure is simple and convenient to operate, thereby achieving a simple structure and high sealing performance. The double effect.

Further, when the drawer 40 is in the pushed-in state, the projection of the edge in the vertical direction and the projection of the seal ring 422 in the vertical direction have overlapping regions which are in a closed loop shape. In this way, it is ensured that any position around the second opening is sealed by the abutment of the edge and the sealing ring 422.

In the present embodiment, the sealing ring 422 is provided as a flexible material, that is, when the edge abuts the sealing ring 422, the sealing ring 422 is deformed under the edge of the edge, thereby increasing the sealing ring 422 and The tight contact between the edges achieves high sealing.

Further, the inner tank 21 is provided with a limiting portion. When the box body 41 pushes the cover body 42 to move to the first position, the limiting portion applies a resisting force to the cover body 42. The resisting force has a vertical force. Straight downward force component. Thus, the lid body 42 is respectively restrained from the upper and lower sides by the limiting portion and the box body 41, and the edge abuts against the sealing ring 422 to deform the sealing ring 422, further increasing the sealing ring 422 and the The contact tightness between the edges; and by the resisting action of the limiting portion, the sealing property due to the change of the air pressure in the accommodating chamber 400 or the excessive food is caused to cause the sealing property of the lid body 42 to rise upward.

In the present embodiment, the inner tank 21 includes a inner tank groove 210 corresponding to the left and right sides of the cover body 42, and the inner tank groove 210 includes an upper end wall 211 defining an upper boundary thereof, and the upper end wall 211 is also the limit portion. Correspondingly, the cover 42 extends to the left and right sides into the inner tank groove 210. Wherein, when the box body 41 is pushed into the compartment 20, the box body 41 pushes the cover body 42 to the first position, and the top surface 4211 of the cover plate 421 abuts against the upper end wall 211, thereby restricting the cover body 42 from continuing upward movement. . Thus, the restriction of the cover body 42 by the upper end wall 211 of the inner tank groove 210 causes the cover body 42 to be pressed tightly toward the casing 41, thereby achieving a high sealing effect.

The inner tank groove 210 further includes a lower end wall 212 disposed above and below the upper end wall 211. The upper portions of the two

side walls

413, 414 of the casing 41 are respectively provided with outwardly projecting side edges 410. The side edge 410 includes an upper end surface 4101 and a lower end surface 4102 which are disposed opposite each other, wherein the upper end surface 4101 constitutes a part of the edge. When the drawer 40 is in the pushed-in state, the side edge 410 fits into the inner tank groove 210, and the lower end surface 4102 fits the lower end wall 212, and the upper end surface 4101 abuts against the lower surface 4222 of the seal ring 422.

In other words, the distance between the upper end surface 4101 and the lower end surface 4102 defines the thickness H1 of the side edge 410; the portion of the cover 42 that extends into the inner tank groove 210 is defined as a fitting portion, when the sealing ring 422 is not deformed, The thickness of the mating portion defines the thickness H2 of the cover 42; the distance between the upper end wall 211 and the lower end wall 212 defines the width H3 of the inner tank groove 210; wherein (H1+H2)-H3 is greater than zero and is approximately 2 to 3 mm . Thus, the cover body 42 and the casing 41 are interference fit into the inner tank groove 210 to strengthen the sealing force, and the structure is simple.

It should be noted that, in the drawings, in order to facilitate the clear display of the structure of each component, each abutting or fitting surface/wall: for example, between the upper end surface 4101 and the lower surface 4222, the lower end surface 4102 and the lower end wall 212 Between, between the top surface 4211 and the upper end wall 211, and the like, are shown at a distance from each other in the figure.

Further, the inner tank groove 210 further includes a third opening formed at a front end thereof, the third opening being in communication with the first opening, and the side edge 410 can enter or exit the inner tank groove 210 through the third opening.

Further, the positioning mechanism 50 includes a fixing member 51 and a guiding groove 52 that cooperates with the fixing member 51. The arrangement of the fixing member 51 and the guide groove 52 has various embodiments. For example, in the embodiment, the fixing member 51 is outwardly protruded from the side surface 4213 of the cover plate 421, and the guiding groove 52 is recessed on the inner casing 21, and the fixing member 51 is fitted into the guiding groove 52 and can be guided along The extending direction X of the slot 52 is moved to reciprocate the cover 42 between the first position and the second position; of course, in other embodiments, the positions of the fixing member 51 and the guiding groove 52 are interchangeable. For example, the fixing member 51 is protruded from the inner casing 21, and the guiding groove 52 is recessed on the side surface 4211 of the cover plate 421.

The positioning mechanism 50 is disposed in at least two pairs spaced apart from each other in the front and rear. In the present embodiment, the positioning mechanism 50 is disposed in two pairs. Each pair of positioning mechanisms 50 are respectively disposed opposite to the left and right sides of the cover body 42, so that the movement of the cover body 42 can be ensured to avoid the turning or offset.

In the present embodiment, the guide groove 52 is disposed to extend along a circular arc line, that is, the extending direction X is a circular arc line, so that the movement of the cover 42 between the first position and the second position is performed. There is also a component of motion in the horizontal direction. When the casing 41 pushes the cover 42 to move from the second position to the first position, the cover 42 moves to the upper rear arc to make the movement smoother, and the guide groove 52 and the fixing member 51 can be avoided. Lateral resistance between.

Preferably, in any two guiding grooves 52, the curvature of the relatively front guiding groove 52 is greater than the curvature of the opposite rear guiding groove 52. For example, the two guide grooves 52 shown in FIG. 4 have an arc of R1 with respect to the front guide groove 52, and an arc of R2 with respect to the rear guide groove 52, and R1 is larger than R2. Thus, when the casing 41 is pushed into the compartment 20, the lid body 42 performs a compound motion along the variable axis, rather than a translational movement, thereby achieving smooth and smooth pushing of the casing 41.

Further, the front end of the cover 42 is provided with a first guiding slope 423, and correspondingly, the rear end of the casing 41 is provided with a second guiding slope 4162. Wherein, when the box body 41 is pushed into the compartment 20, the first guiding slope 423 and the second guiding slope 4162 can cooperate with each other, so that the driving force applied to the cover 42 by the casing 41 has an upward force component and The rear force component pushes the cover 42 to move rearward and upward, thereby allowing the casing 41 to smoothly enter under the cover 42.

Preferably, a partial sealing ring 222 is provided at the first guiding slope 423.

In addition, the box body 41 further includes a mating surface 4161 adapted to the shape of the first guiding slope 423. When the drawer 40 is in the pushed-in state, the mating surface 4161 and the first guiding slope 423 are fitted to ensure a sealing effect. .

Further, depending on the specific arrangement of the compartments 20, the drawer 40 may be specifically disposed in any one or more of the compartments 20 of the freezing compartment, the refrigerating compartment, the changing greenhouse, and the like. For example, the compartment 20 is provided as a refrigerating compartment, the drawer 40 can be disposed in the refrigerating compartment and used for moisturizing and fresh-keeping of the food; the compartment 20 is provided as a greenhouse, and the drawer 40 can be disposed in the variable greenhouse and used as a variable temperature drawer.

Referring to Figures 1, 5 and 6, in the present embodiment, the compartment 20 is used as a freezer compartment, and the drawer 40 is disposed in the freezer compartment for rapid freezing and constant temperature storage of the food. Specifically, the compartment 20 includes a first space occupied by the drawer 40 and a second space outside the drawer 40.

The drawer 40 also includes a vent through which the receiving chamber 400 can communicate with the exterior of the drawer 40. In this embodiment, the vent is disposed on the rear wall 412 of the casing 41. Of course, the specific position thereof is not limited to the embodiment. Wherein, when the drawer 40 is in the pushed-in state, the accommodating cavity 400 can communicate with the outside of the drawer 40 only through the vent. In this way, temperature and humidity control of the accommodating chamber 400 can be facilitated.

Further, the refrigerator 100 is provided as an air-cooled refrigerator, which further includes a refrigeration system, an evaporator chamber 70, a blower system, and a control system.

The refrigeration system is used to provide refrigeration for the refrigerator 100. Specifically, the refrigeration system includes a compressor 61, a condenser, and an evaporator 62, and the compressor 61, the condenser, and the evaporator 62 communicate with each other to form a passage for the refrigerant to flow.

The compressor 61 is for compressing the refrigerant and supplying the compressed refrigerant to the condenser. The evaporator 62 cools its corresponding surrounding air by performing a cooling operation for absorbing ambient latent heat to supply refrigerant supplied from the condenser. In a typical refrigeration cycle, a refrigerant (e.g., Freon) may be pressurized by compressor 61, for example, in a gaseous state, and flowed through the line to the condenser, and after being dissipated through the fins on the condenser, condensing In a liquid state; then the liquid refrigerant flows into the evaporator 62 through the pipeline, and is vaporized due to the pressure of the compressor 61, and causes the air around the evaporator 62 to be cooled; and the vaporized refrigerant passes through the pipeline. It is again introduced into the compressor 61 and circulated in this way.

The evaporator chamber 70 is defined by a tank 10 having an evaporator 62 disposed therein. When the refrigeration system is turned on, the evaporator 62 can exchange heat with the air in the evaporator chamber 70 to form cold air in the evaporator chamber 70. In the present embodiment, the evaporator chamber 70 is adjacent to the rear of the compartment 20.

The air supply system is used to deliver cold air in the evaporator chamber 70 to a space that needs to be cooled. In this embodiment, the air supply system includes a freezing air duct 81, and the freezing air duct 81 includes a first air supply duct 811 that communicates with the evaporator chamber 70 and the second space, and can be seamlessly connected to the ventilation. The mouth is connected to the evaporator chamber 70 and the second air supply duct 812 of the accommodating chamber 400.

The control system can be used to control the first air supply duct 811 and the second air supply duct 812 to be selectively opened, that is, the control system can control the first air supply duct 811 to be opened and the second air supply duct 812 to be closed, or The first air supply duct 811 is controlled to be closed and the second air supply duct 812 is opened, thereby causing the refrigerator 100 to be in different operating modes.

Wherein, referring to FIG. 5, when the control system controls the first air supply duct 811 to be closed and the second air supply duct 812 to be opened, the refrigerator 100 is in a rapid cooling mode, and at this time, the cold air in the evaporator chamber 70 cannot pass the first The air supply duct 811 enters the second space of the compartment 20, and can directly enter the accommodating cavity 400 through the second air supply duct 812 to cool and cool the food in the accommodating cavity 400. Since the volume of the accommodating chamber 400 is much smaller than the volume of the compartment 20, the required amount of cooling is also small, so that the temperature in the accommodating chamber 400 can be rapidly lowered.

Referring to FIG. 6, when the control system controls the first air supply duct 811 to be opened and the second air supply duct 812 to be closed, the refrigerator 100 is in the constant temperature mode, and at this time, the cold air in the evaporator chamber 70 cannot pass through the second air supply duct. The 812 enters the accommodating chamber 400 and can enter the second space through the first air supply duct 811 to cool the compartment 20. Thus, the accommodating chamber 400 is in a closed space, the cooling loss is slow, and the outside of the drawer 40 is also a colder environment, reducing the rate of loss of the accommodating chamber 400; the accommodating chamber 400 and the second space are fluidly isolated from each other, That is, when there is no gas flow between each other, when the temperature fluctuation occurs in the compartment 20 due to the opening and closing of the door body 30, the accommodating chamber 400 still maintains a relatively constant temperature, and the fluctuation is small; and the food in the accommodating chamber 400 is not caused by the The second space is ventilated and cooled to cause water loss, and the food is kept fresh for a long time.

Further, the air supply system further includes a damper 82. The damper 82 is disposed in the freezing air duct 81. The control system is connected to the damper 82 and controls the damper 82 to selectively open the first air supply duct 811 and the second air supply duct 812. . Specifically, the control system may control the damper 82 to open the first air supply duct 811 and close the second air supply duct 812 to make the refrigerator 100 in the constant temperature mode; and also control the damper 82 to close the first air supply duct 811 and The second air supply duct 812 is opened to place the refrigerator 100 in the rapid cooling mode. Certainly, the damper 82 may be configured to simultaneously control one of the first air supply duct 811 and the second air supply duct 812 as shown in this embodiment; or the damper 82 may be further configured to respectively control the first air supply duct 811, Two of the second air supply ducts 812 are opened and closed.

The freezing duct 81 has a plurality of air blowing ports formed on the inner tank 21 or the air duct plate 810. In this embodiment, the second air supply duct 812 is disposed to correspond to the first air blowing port of the air vent, and the air door 82 is disposed at the first air blowing port. Thus, when the damper 82 closes the second air supply duct 812, as little space as possible in the freezing air duct 81 communicates with the accommodating chamber 400, so that temperature fluctuations in the accommodating chamber 400 are made smaller. In addition, when the casing 41 is pulled out of the compartment 20, the vent opening is disengaged from the first air supply opening (ie, the second air supply duct 812); when the casing 41 is pushed into the compartment 20, The vent is seamlessly connected to the first air supply opening.

In this embodiment, the first air supply duct 811 is disposed as a second air supply opening disposed near the first air supply opening; the air door 82 is configured as a single pole double throwing damper to facilitate simultaneous control of the first air supply opening and the first Two air outlets.

The freezing air duct 81 further has a return air opening 813 formed on the inner tank 21 or the air duct plate 810. When the damper 82 closes the second air supply duct 812 and opens the first air supply duct 811, the air in the second space is It can be returned to the evaporator chamber 70 through the return air 813.

Further, in the embodiment, the control system further includes a first temperature sensing device 91 for sensing the temperature of the food in the accommodating chamber 400 in real time. When the drawer 40 enters and exits the push-in state, the control system can control the operation mode of the refrigerator 100 according to the food temperature.

Wherein, when the temperature of the food is not higher than the first preset temperature, the control system controls the damper 82 to close the second air supply duct 812 and open the first air supply duct 811, so that the receiving chamber 400 is in a closed space, thereby Maintain a constant temperature moisturizing environment and improve the storage quality of food.

When the food temperature is higher than the first preset temperature, the control system controls the damper 82 to close the first air supply duct 811 and open the second air supply duct 812, so that the cold air in the evaporator chamber 70 can enter. The inside of the accommodating chamber 400 can realize the rapid cooling of the high-temperature food in the drawer 40, so as to quickly pass the largest ice crystal zone of the food, thereby ensuring the quality of the food to the utmost extent, and ensuring that the flavor and nutrition of the food are not lost.

Specifically, the first temperature sensing device 91 is disposed under the cover 42 to ensure that the detection range covers the receiving cavity 400 as much as possible; preferably, the first temperature sensing device 91 is specifically configured as a resistive temperature sensor, and the electric heating Even temperature sensors, integrated temperature sensors, infrared sensors, etc., to more accurately sense food temperature.

Further, the air supply system further includes a fan 83 that is placed in the freezing duct 81 or the evaporator chamber 70. The control system is connected to the fan 83 and controls the opening and closing of the fan 83. When the fan 83 is turned on, the fan 83 can drive the formation of an air flow to accelerate the flow of air between the spaces in which the phases communicate. In this embodiment, the fan 83 can be used to drive the airflow into the first air supply duct 811, and can also be used to drive the airflow into the second air supply duct 812; in other embodiments, the fan 83 can be configured to correspond to the first Two air ducts 811 and two air ducts 812 are provided.

Specifically, in the embodiment, when the first air supply duct 811 is opened and the second air supply duct 812 is closed, the fan 83 is turned on, and the cold air in the evaporator chamber 70 can be promptly entered through the first air supply duct 811. In the second space, the air in the second space is returned to the evaporator chamber 70 through the return air 813, that is, in the second space of the evaporator chamber 70, the freezing duct 81, and the compartment 20. A circulating airflow is formed between the air outlets 813; when the first air supply duct 811 is closed and the second air supply duct 812 is opened, the fan 83 is turned on to cause the cold air in the evaporator chamber 70 to quickly enter the receiving chamber through the second air supply duct 812. 400 inside.

Further, the control system can also control the operating rate of the fan 83. When the operating speed of the fan 83 is changed from slow to slow, the air volume of the airflow formed by the driving of the fan 83 becomes large and the wind speed becomes fast.

In this embodiment, when the food temperature is higher than the first preset temperature, the control system controls the fan 83 to be turned on to supply air to the second air supply duct 812. In this way, the cold air in the evaporator chamber 70 can be quickly entered into the accommodating chamber 400, and the temperature decreasing rate in the accommodating chamber 400 is accelerated, thereby rapidly cooling the high temperature food.

In addition, the control system further includes a second temperature sensing device 92 disposed in the second space of the compartment 20 for sensing the environment in the second space in real time. The temperature, that is, the temperature of the air outside the drawer 40 of the compartment 20.

The control system can also control opening and closing of the refrigeration system based on the ambient temperature. Wherein, when the ambient temperature is higher than the second preset temperature, the control system controls the refrigeration system to be turned on to operate the evaporator 62 and exchange heat with the air in the evaporator chamber 70 to reduce the evaporator The temperature of the air within chamber 70. In other words, the opening and closing of the refrigeration system depends on the temperature sensing result of the second space of the compartment 20.

In addition, in this embodiment, the food temperature is higher than the first preset temperature, and the ambient temperature is higher than the second preset temperature. When the two conditions satisfy either or both, the The control system controls the fan 83 to be turned on.

Specifically, the operation of the refrigerator 100 of the present embodiment is roughly classified into the following cases according to the sensed food temperature and the ambient temperature:

First, when the food temperature is not higher than the first preset temperature and the ambient temperature is not higher than the second preset temperature: the control system controls the refrigeration system to be closed, the fan 83 is closed, The damper 82 closes the second air supply duct 812 and opens the first air supply duct 811. In this case, the accommodating chamber 400 forms a closed space, and the accommodating chamber 400 maintains a constant temperature without moisture loss, thereby ensuring the storage quality of the food.

Second, when the food temperature is not higher than the first preset temperature and the ambient temperature is higher than the second preset temperature: the control system controls the refrigeration system to be turned on, the fan 83 is turned on, and the damper 82 closing the second air supply duct 812 and opening the first air supply duct 811; until the ambient temperature is lowered to not higher than the third preset temperature, the control system controls the refrigeration system to be turned off and the fan 83 to be turned off. In this case, the air is blown into the second space to lower the temperature of the compartment 20; the accommodating chamber 400 is still a closed space, and the temperature and humidity of the accommodating chamber 400 are less affected by the second space, and the temperature is kept constant. Moisturizing environment.

Third, when the food temperature is higher than the first preset temperature and the ambient temperature is not higher than the second preset temperature: the control system controls the refrigeration system to be turned off, the fan 83 is turned on, and the damper 82: closing the first air supply duct 811 and opening the second air supply duct 812; after the food temperature is lowered to not higher than the first preset temperature, the control system controls the fan 83 to be closed and the damper 82 to be closed. The air duct 812 is supplied and the first air supply duct 811 is opened. In this case, the air is directly supplied into the accommodating chamber 400 to quickly lower the temperature of the accommodating chamber 400, so that the placed high-temperature food is quickly cooled to ensure the quality of the food; at the same time, the residual cooling of the evaporator 62 is fully utilized to accommodate The cavity 400 cools down, saving energy. Of course, in other embodiments, the refrigeration system can be controlled to be turned on in this case, and although energy consumption is generated, the cooling rate of the accommodating chamber 400 can be accelerated to further ensure the quality of the food.

Fourth, when the food temperature is higher than the first preset temperature and the ambient temperature is higher than the second preset temperature: the control system first controls the refrigeration system to be turned on, the fan 83 to be turned on, and the damper 82: closing the first air supply duct 811 and opening the second air supply duct 812 to preferentially supply air into the accommodating chamber 400; until the food temperature is lowered to not higher than the first preset temperature, the control system Re-controlling that the refrigeration system is turned on, the fan 83 is turned on, the damper 82 is closed to the second air supply duct 812, and the first air supply duct 811 is opened to supply air to the second space; until when the ambient temperature is lowered to a low level After the third preset temperature, the control system controls the refrigeration system to be turned off and the fan 83 to be turned off. In this case, the inside of the accommodating chamber 400 is preferentially ventilated and cooled to quickly lower the temperature of the accommodating chamber 400, so that the placed high-temperature food can be quickly cooled to ensure the quality of the food.

Further, in the control method corresponding to the above-described refrigerator 100, first, the first temperature sensing device 91 senses the temperature of the food in the accommodating chamber 400 in real time; then, the control system determines whether the food temperature is higher than the a first preset temperature (the result of the determination is hereinafter referred to as a first determination result), and controls an operation mode of the refrigerator 100 according to the first determination result; if the first determination result is “Yes”, that is, the food temperature is higher than the The first preset temperature, the control system controls the second air supply duct 812 to be opened, and the first air supply duct 811 is closed, so that the refrigerator 100 is in the rapid cooling mode; if the first determination result is “No”, That is, the food temperature is not higher than the first preset temperature, and the control system controls the first air supply duct 811 to be opened and the second air supply duct 812 to be closed, so that the refrigerator 100 is in the constant temperature mode. In this way, when the high temperature food is placed in the drawer 40, the temperature of the accommodating chamber 400 can be rapidly reduced by the control method of the embodiment, and the food can be quickly cooled and passed through the largest ice crystal belt to ensure the quality of the food to the utmost extent. The flavor and nutrition of the food are ensured to be lost; and when the high temperature food is not placed in the drawer 40, the drawer 40 is always kept sealed, thereby ensuring a constant temperature fluctuation in the drawer 40 and less water loss.

In the control method, the control method controls the opening and closing of the first air supply duct 811 and the second air supply duct 812 by controlling the damper 82. Specifically, the control method controls the damper 82 to open the first air supply duct 811 and close the second air supply duct 812, or the control damper 82 closes the first air supply duct 811 and opens the second air supply duct 812.

In addition, if the first determination result is “Yes”, the control system further controls the fan 83 to be turned on, so that the cold air in the evaporator chamber 70 enters the accommodating chamber 400 through the second air supply duct 812 to quickly provide cold air, further. The rate of temperature reduction within the containment chamber 400 is guaranteed.

Further, in the control method, the method further includes: the second temperature sensing device 92 senses the ambient temperature in the second space of the compartment 20 in real time; and then the control system determines whether the ambient temperature is high At the second preset temperature (the result of the determination is hereinafter referred to as a second determination result), and controlling the opening and closing of the refrigeration system according to the second determination result; if the second determination result is "Yes", the control system The refrigeration system is controlled to be turned on; if the second determination result is "NO", the control system controls the refrigeration system to be turned off. That is, the on/off of the refrigeration system is controlled by the temperature of the second space of the compartment 20.

Compared with the prior art, the refrigerator of the embodiment has the following beneficial technical effects:

Through the cooperation of the box body and the cover body, in particular, the sealing ring and the edge abut each other, the sealing of the drawer can be realized under the gravity of the cover body, thereby ensuring the cold storage of the food in the drawer accommodating cavity; The mechanism does not need to manually operate the cover body, and the drawer can be sealed and opened only by pushing and pulling the box body, and the structure is simple and convenient to operate, thereby achieving the dual effects of simple structure and high sealing performance;

When the drawer 40 is in the pushed-in state, the accommodating cavity 400 can form a closed space, the cooling loss is slow, and the outside of the drawer 40 is also a colder environment, which reduces the rate of loss of the accommodating cavity 400; the accommodating cavity 400 and The second spaces are fluidly isolated from each other, that is, there is no gas flow between each other. When the second space of the compartment 20 is caused by temperature fluctuations due to opening and closing of the door body 30, the accommodating chamber 400 maintains a relatively constant temperature and fluctuates. Small; and the food in the accommodating chamber 400 does not cause water loss due to the ventilation and cooling of the second space, and the freshness of the food is increased;

When the high temperature food is placed in the drawer 40, the air can be directly supplied to the accommodating chamber 400. Since the volume of the accommodating chamber 400 is much smaller than that of the chamber 20, the required cooling capacity is also small, and the temperature in the accommodating chamber 400 can be rapidly lowered. In order to quickly pass the food's largest ice crystal belt, the quality of the food is guaranteed to the utmost extent, and the flavor and nutrition of the food are not lost.

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 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. It is included in the scope of protection of the present invention.

Claims

A refrigerator includes a compartment and a drawer housed in the compartment, wherein the drawer includes

a box body detachably disposed in the compartment, including an opening formed in an upper portion of the box body, and an edge enclosing the opening;

a cover body disposed at the opening, comprising a cover plate and a sealing ring disposed around a bottom surface of the cover plate;

The refrigerator further includes a positioning mechanism disposed on two sides of the cover plate, and the cover body is movably connected to the inner chamber of the compartment by the positioning mechanism between the first position and the second position, The height of the first position is greater than the height of the second position;

Wherein, when the casing is pulled out of the compartment, the cover moves from the first position to the second position and stops in the compartment to open the opening;

When the casing is pushed into the compartment, the casing pushes the cover back from the second position to the first position, the cover covers the opening and the edge abuts The lower surface of the seal ring seals the opening.
The refrigerator according to claim 1, wherein the positioning mechanism comprises a fixing member and a guiding groove engaged with the fixing member, wherein the fixing member protrudes from a side of the cover plate and the inner casing In one aspect, the guiding groove is recessed on one side of the cover plate and the inner side of the inner casing, and the fixing member is movable along an extending direction of the guiding groove to make the cover body at the first Reciprocating between the position and the second position.
The refrigerator according to claim 2, wherein the positioning mechanism is disposed in at least two pairs spaced apart from each other, and each pair of the positioning mechanisms are oppositely disposed on opposite sides of the cover plate.
The refrigerator according to claim 3, wherein the guide groove is disposed to extend along a circular arc line; of any two of the guide grooves, the arc of the opposite front guide groove is larger than that of the opposite rear The curvature of the guide groove.
The refrigerator according to claim 1, wherein the seal ring is provided as a flexible material.
The refrigerator according to claim 5, wherein the inner casing is provided with a limiting portion, and when the cover is located at the first position, the limiting portion is applied to the cover body to resist the force The resisting force has a vertically downward component.
The refrigerator according to claim 6, wherein the inner casing comprises a inner tank groove corresponding to two sides of the cover body, and the limiting portion is disposed as an upper end wall of the inner tank groove, the cover The body extends into the inner tank groove on both sides; wherein the upper end wall abuts against the top surface of the cover plate when the cover body is in the first position.
The refrigerator according to claim 7, wherein the inner tank groove further comprises a lower end wall disposed opposite the upper end wall; the case body includes a side edge fitted into the inner tank groove, The side edge includes an upper end surface constituting the edge and a lower end surface disposed opposite to the upper end surface; wherein the lower end surface abuts the lower end wall when the case is pushed into the compartment And the upper end surface abuts the lower surface to deform the sealing ring.
The refrigerator according to claim 1, wherein a front end of the cover body is provided with a first guiding slope, and a rear end of the box body is provided with a second guiding slope; wherein when the box is pushed into the box When the chamber is described, the first guiding slope and the second guiding slope cooperate with each other to apply a pushing force to the cover body, and the driving force has a vertical upward force component and Horizontal backward force component.
The refrigerator according to claim 1, wherein the casing further comprises a mating surface adapted to the shape of the first guiding bevel, when the casing is pushed into the compartment, the A guiding ramp can be attached to the mating surface.