CN210179967U

CN210179967U - Refrigerator capable of preventing freezing chamber air duct from moving downwards

Info

Publication number: CN210179967U
Application number: CN201920242152.0U
Authority: CN
Inventors: Jing Wang; 王晶; Shujuan Wu; 吴淑娟; Jianru Liu; 刘建如; Shengyuan Nie; 聂圣源; Xiaobing Zhu; 朱小兵
Original assignee: Qingdao Haier Co Ltd; Qingdao Haier Refrigerator Co Ltd
Current assignee: Qingdao Haier Co Ltd; Qingdao Haier Refrigerator Co Ltd
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-03-24
Anticipated expiration: 2029-02-26

Abstract

The utility model provides a refrigerator for preventing a freezing chamber air duct from moving downwards, which comprises a box body, an evaporator, a freezing chamber air duct and an air supply fan, wherein the box body comprises a freezing liner positioned at the lowest part, and a cooling chamber and a freezing chamber positioned above the cooling chamber are limited in the freezing liner; the evaporator and the air supply fan are arranged in the cooling chamber, and the air duct of the freezing chamber is arranged on the inner side of the rear wall of the freezing liner; the rear section of the bottom wall of the freezing inner container is provided with at least one first limiting boss protruding upwards, and each first limiting boss is provided with a limiting groove; the lower section of the freezing chamber air duct is provided with a matching part matched with the limiting groove, and the matching part is matched with the limiting groove to prevent the freezing chamber air duct from moving downwards.

Description

Refrigerator capable of preventing freezing chamber air duct from moving downwards

Technical Field

The utility model relates to a household electrical appliances technical field especially relates to a prevent refrigerator that freezer wind channel moved down.

Background

In the existing refrigerator, a freezing chamber is generally positioned at the lower part of the refrigerator, an evaporator is positioned at the rear part of the outer side of the freezing chamber, a press chamber is positioned at the rear part of the freezing chamber, and the freezing chamber needs to be abducted for the press chamber, so that the freezing chamber has special shape and the depth of the freezing chamber is limited.

Disclosure of Invention

In view of the above, it is an object of the present invention to provide a refrigerator that overcomes or at least partially solves the above problems.

The utility model discloses a further purpose promotes the steadiness of freezer wind channel installation and reduces the shared space of cooling chamber.

The utility model provides a refrigerator, include:

the refrigerator comprises a refrigerator body and a refrigerating chamber, wherein the refrigerator body comprises a refrigerating inner container positioned at the lowest part, and a cooling chamber and a freezing chamber positioned above the cooling chamber are limited in the refrigerating inner container;

an evaporator disposed within the cooling chamber and configured to cool an airflow entering the cooling chamber to form a cooled airflow;

the freezing chamber air duct is arranged on the inner side of the rear wall of the freezing inner container and is configured to convey at least part of cooling air flow into the freezing chamber;

the air supply fan is arranged in the cooling chamber and is configured to promote cooling airflow to enter the air duct of the freezing chamber;

the rear section of the bottom wall of the freezing inner container is provided with at least one first limiting boss protruding upwards, and each first limiting boss is provided with a limiting groove; the lower section of the freezing chamber air duct is provided with a matching part matched with the limiting groove, and the matching part is matched with the limiting groove to prevent the freezing chamber air duct from moving downwards.

Optionally, the areas of the two lateral side walls of the freezing inner container corresponding to the cooling chamber respectively protrude towards the cooling chamber to form a second limit boss;

the refrigerator also comprises a cover plate, wherein the cover plate forms the top wall and the front wall of the cooling chamber, and defines the cooling chamber together with the two second limit bosses, the section of the side walls of the two freezing inner containers in front of the corresponding second limit bosses, the bottom wall of the freezing inner container and the rear wall of the freezing inner container.

Optionally, the freezing chamber air duct includes an air duct front cover plate located at the front side and an air duct rear cover plate located at the rear side and defining the air supply air duct with the air duct front cover plate;

the air duct rear cover plate comprises a rear vertical plate section which is positioned at the lower part and extends vertically and a joint section which is bent and extends from the lower end of the rear vertical plate section to the front lower part, the joint section is positioned below the air duct front cover plate, and the front end of the joint section and the lower end of the air duct front cover plate define an air duct air inlet;

the engagement section is formed with a mating portion.

Optionally, the air supply fan is located behind the evaporator, and comprises a casing and an impeller arranged in the casing, the casing comprises a lower box body and an upper cover body buckled on the lower box body, and an air outlet of the casing is defined by the rear end of the upper cover body and the rear end of the lower box body;

the air duct front cover plate is detachably connected with the upper cover body, and the air duct rear cover plate is detachably connected with the lower box body through the joint section, so that the air outlet of the machine shell is communicated with the air inlet of the air duct.

Optionally, a third limiting boss protruding upwards is formed at a position close to the rear end on each of the two transverse sides of the bottom wall of the freezing inner container, and a space for arranging the air supply fan is defined by the two third limiting bosses and a section of the bottom wall of the freezing inner container located behind the evaporator.

Optionally, the bottom wall of the freezing inner container comprises a first inclined straight section extending obliquely forwards and downwards, a second inclined straight section extending obliquely forwards and downwards, a third inclined straight section extending obliquely forwards and downwards, a water receiving section positioned below the evaporator and a front bending section extending by bending the water receiving section forwards, which are connected in sequence from back to front;

at least one first limiting boss is formed at the position, close to the rear end, of the first inclined straight section.

Optionally, the bottom wall of the lower box body comprises a first horizontal straight section, a fourth inclined straight section and a fifth inclined straight section, wherein the first horizontal straight section, the fourth inclined straight section and the fifth inclined straight section are connected in sequence from back to front;

the first horizontal straight section is positioned above the rear section of the first inclined straight section and is connected with the joint section;

the fourth inclined straight section is positioned above the front section of the first inclined straight section and the second inclined straight section and is parallel to the second inclined straight section, and the fifth inclined straight section is positioned above the third inclined straight section and is parallel to the third inclined straight section.

Optionally, the air supply fan is a centrifugal fan, and a rotating shaft of the impeller is perpendicular to the fourth inclined straight section;

the top wall of the upper cover body forms an air inlet of the organic shell.

Optionally, an included angle between a projection line of the first inclined straight section on a vertical plane parallel to the side wall of the freezing inner container and a horizontal straight line extending back and forth is 5-15 °;

the included angle between the projection line of the second inclined straight section on the vertical plane parallel to the side wall of the freezing inner container and the horizontal straight line extending forwards and backwards is 30-40 degrees;

the projection line of the third inclined straight section on the vertical plane parallel to the side wall of the freezing inner container and the horizontal straight line extending forwards and backwards form an included angle of 5-15 degrees.

Optionally, the box further comprises:

the temperature-changing liner is positioned above the freezing liner, and a temperature-changing chamber is limited in the temperature-changing liner;

and the variable-temperature chamber air duct is configured to be in controllable communication with the freezing chamber air duct so as to convey part of the cooling air flow in the freezing chamber air duct into the variable-temperature chamber.

The utility model discloses a refrigerator is through injecing the cooling chamber in the bottom space of freezing inner bag to injecing the freezer in the top of cooling chamber, making the cooling chamber occupy the lower part space in the freezing inner bag, be convenient for at the rear limited pressure cabin of cooling chamber, the freezer need not to give way for the pressure cabin again, guarantees the storage volume of freezer. In addition, the bottom wall of the freezing inner container and the lower section of the freezing chamber air channel are specially designed, so that the phenomenon that the freezing chamber air channel falls down due to collision in the transportation process of the refrigerator can be avoided, and the refrigerating effect in the operation process of the refrigerator is ensured.

Furthermore, in the refrigerator of the utility model, the rear cover plate of the air duct is connected with the lower box body of the casing through the joint section with special structure, so that the air flow in the casing smoothly enters the air duct of the freezing chamber, and the noise is reduced; in addition, the appearance of casing cooperates with the diapire of freezing inner bag and makes the spatial layout in the cooling chamber compacter, reduces cooling chamber occupation space to provide bigger storage volume for the freezer of cooling chamber top.

Further, the utility model discloses an in the refrigerator, the freezer wind channel adopts split type design with air supply fan's casing, realizes the modularization, makes things convenient for dismouting and transportation, improves the yields.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a front view of a refrigerator according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a refrigerator according to an embodiment of the present invention;

fig. 3 is a schematic view of a freezing inner container of a refrigerator according to an embodiment of the present invention;

fig. 4 is a front view of the assembly of the freezing inner container, the evaporator, the air supply fan and the freezing chamber air duct of the refrigerator according to one embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along the line A-A of FIG. 4;

FIG. 6 is an enlarged view of area A of FIG. 5;

fig. 7 is a schematic view of a freezer air duct and an air supply fan assembly of a refrigerator according to an embodiment of the present invention;

fig. 8 is an exploded schematic view of a freezer air duct and an air supply fan of a refrigerator according to an embodiment of the present invention;

fig. 9 is a schematic view of an upper cover of a casing of a blower fan of a refrigerator according to an embodiment of the present invention; and

fig. 10 is a schematic view illustrating a lower case and an impeller of a casing of a blower fan of a refrigerator according to an embodiment of the present invention are assembled.

Detailed Description

The present embodiment provides a refrigerator 10, and the refrigerator 10 according to the embodiment of the present invention is described below with reference to fig. 1 to 10. In the following description, the orientation or positional relationship indicated by "front", "rear", "upper", "lower", "left", "right", etc. is an orientation based on the refrigerator 10 itself as a reference, the "front", "rear" is a direction indicated in fig. 5, 6, as shown in fig. 1 and 4, and the "lateral" refers to a direction parallel to the width direction of the refrigerator 10.

Fig. 1 is a front view of a refrigerator 10 according to an embodiment of the present invention, and fig. 2 is a schematic perspective view of the refrigerator 10 according to an embodiment of the present invention.

As shown in fig. 1 and 2, the refrigerator 10 may generally include a cabinet 100, the cabinet 100 including a housing 110 and a storage liner disposed inside the housing 110, a space between the housing 110 and the storage liner being filled with a thermal insulation material (forming a foaming layer), the storage liner defining therein a storage compartment, the storage liner may generally include a freezing liner 130, a refrigerating liner 120, and the like, the storage compartment including a freezing chamber 132 defined within the freezing liner 130 and a refrigerating chamber 121 defined within the refrigerating liner 120. The front side of the storage inner container is also provided with a door body to open or close the storage chamber, and the door body is hidden in both figures 1 and 2.

As those skilled in the art can appreciate, the refrigerator 10 of the present embodiment may further include an evaporator 101, a blower fan 103, a compressor, a condenser (not shown), a throttling element (not shown), and the like. The evaporator 101 is connected to a compressor, a condenser, and a throttle element via refrigerant lines to form a refrigeration cycle, and is cooled when the compressor is started to cool air flowing therethrough.

In particular, in the present embodiment, as shown in fig. 1 and 2, the freezing inner container 130 is located at the lower portion of the cabinet 100, and a cooling chamber at the bottom is defined therein, the evaporator 101 is disposed in the cooling chamber to cool the airflow entering the cooling chamber to form a cooling airflow, and the freezing chamber 132 defined by the freezing inner container 130 is located above the cooling chamber such that the cooling chamber is at the lowest portion of the cabinet 100.

The evaporator 101 may be disposed in the cooling chamber in a flat cubic shape, i.e., the long and wide sides of the evaporator 101 are parallel to the horizontal plane, the thickness side is perpendicular to the horizontal plane, and the thickness dimension is significantly smaller than the length dimension of the evaporator 101. By placing the evaporator 101 horizontally in the cooling chamber, the evaporator 101 is prevented from occupying more space, and the storage capacity of the freezing chamber 132 in the upper portion of the cooling chamber is ensured.

In the conventional refrigerator 10 in which the freezing chamber 132 is located at the lowermost portion of the refrigerator 10 and the compressor compartment is located at the rear portion of the freezing chamber 132, the freezing chamber 132 is inevitably made as a special-shaped space giving way to the compressor compartment, reducing the storage capacity of the freezing chamber 132, and also causing the following problems. On one hand, the position of the freezing chamber 132 is low, so that a user needs to bend down or crouch down greatly to carry out the operation of taking and placing articles in the freezing chamber 132, which is inconvenient for the user to use, especially for the old; on the other hand, since the depth of the freezing chamber 132 is reduced, in order to ensure the storage volume of the freezing chamber 132, the space in the height direction of the freezing chamber 132 needs to be increased, and when a user stores articles in the freezing chamber 132, the articles need to be stacked in the height direction, which is inconvenient for the user to find the articles, and the articles at the bottom of the freezing chamber 132 are easily shielded, so that the user is not easy to find the articles and forgets the articles, which causes deterioration and waste of the articles; furthermore, since the freezing chamber 132 is shaped and not a rectangular space, it is inconvenient to place some large and difficult-to-divide objects in the freezing chamber 132.

And the refrigerator 10 of this embodiment is through injecing the cooling chamber in freezing inner bag 130's bottom space to injecing freezer 132 in the top of cooling chamber, make the cooling chamber occupy the lower part space in freezing inner bag 130, raised freezer 132, reduce the degree of bowing that the user got when putting article operation to freezer 132, promote user's use experience. Meanwhile, the press cabin can be positioned behind the cooling chamber, and the freezing chamber 132 does not need to give way for the press cabin any more, so that the freezing chamber 132 is a rectangular space, and thus, the stacked storage of the articles can be changed into the flat-spread storage, the articles can be conveniently searched by a user, and the time and the energy of the user are saved; meanwhile, the storage device is convenient for storing large and difficult-to-divide articles, and the problem that pain spots of large articles cannot be stored in the freezing chamber 132 is solved.

Generally, the refrigerator 10 further includes another storage container above the freezing container 130, which may be a temperature-changing container 131 or a refrigerating container 120. In this embodiment, the temperature-variable liner 131 is located above the freezing liner 130, and the refrigerating liner 120 is located above the temperature-variable liner 131. The temperature-changing liner 131 is internally defined with two temperature-changing chambers 1311, as shown in fig. 1 and 2, the two temperature-changing liners 131 are transversely distributed, and each temperature-changing liner 131 is defined with one temperature-changing chamber 1311.

As is well known to those skilled in the art, the temperature within the refrigerated compartment 121 is generally between 2 ℃ and 10 ℃, preferably between 4 ℃ and 7 ℃. The temperature in the freezer compartment 132 is typically in the range of-22 c to-14 c. The temperature-changing chamber 1311 can be adjusted to-18 ℃ to 8 ℃ at will. The optimum storage temperatures for different kinds of articles are different and the suitable storage locations are different, for example, fruit and vegetable foods are suitable for storage in the refrigerating compartment 121 and meat foods are suitable for storage in the freezing compartment 132.

A refrigerating air duct (not shown) may be defined in the refrigerating inner container 120, and a refrigerating evaporator (not shown) and a refrigerating fan (not shown) are provided in the refrigerating air duct to independently supply air to the refrigerating chamber 121.

Under the driving of the air supply fan 103, the cooling air flow is respectively delivered to the freezing chamber 132 and the temperature change chamber 1311 through air ducts, as shown in fig. 1, a freezing chamber air duct 141 is provided inside the rear wall of the freezing inner container 130, and a freezing chamber air inlet 141a communicated with the freezing chamber 132 is formed in the freezing chamber air duct 141 to deliver at least part of the cooling air flow into the freezing chamber 132. Generally, the rear wall of the freezing inner container 130 is formed with a recess recessed rearward to match the freezing chamber air duct 141, and the freezing chamber air duct 141 is fitted into the recess.

A variable temperature chamber air duct (not shown) may be disposed at a rear side of the rear wall of each variable temperature liner 131, the rear wall of the variable temperature liner 131 is formed with a variable temperature chamber air inlet 131a communicated with an air outlet of the variable temperature chamber air duct, and the variable temperature chamber air duct is configured to be controllably communicated with the freezing chamber air duct 141 to deliver a part of the cooling air flow of the freezing chamber air duct 141 into the variable temperature chamber 1311.

As shown in fig. 7, at least one first top opening 141g is formed at the top end of the freezing chamber air duct 141, the first top openings 141g correspond to the air inlets of the variable temperature chamber air duct one by one, and at least one second top opening 130d corresponding to the at least one first top opening 141g is formed at the top wall of the freezing liner 130, so that the first top opening 141g is communicated with the air inlets of the variable temperature chamber air duct through the second top opening 130 d. A damper may be provided at the first top opening 141g of the freezing chamber air duct 141 to controllably open or close the first top opening 141 g. As shown in fig. 1, there are two temperature-changing liners 131, and correspondingly, there are two temperature-changing chamber air ducts, and there are two first top openings 141g and two second top openings 130 d.

Further particularly, in the present embodiment, as shown in fig. 3 and 6, the rear section of the bottom wall of the freezing inner container 130 is formed with at least one first stopper projection 130a protruding upward, and each first stopper projection 130a is formed with a stopper groove 130a 1; the lower section of the freezing chamber air duct 141 is formed with a fitting portion 141f fitted with the stopper groove 130a1, and the fitting portion 141f is fitted with the stopper groove 130a1 to prevent the freezing chamber air duct 141 from moving down.

As shown in fig. 3, there are two first limit projections 130a, two first limit projections 130a are spaced apart in the transverse direction, and correspondingly, there are two engagement portions 141f, and two engagement portions 141f are spaced apart in the transverse direction.

Generally, the lower section of the freezing chamber air duct 141 in the freezing chamber inner container 130 inevitably forms a gap with the bottom wall of the freezing chamber inner container 130, and after the refrigerator 10 is assembled, the first top opening 141g of the top end of the freezing chamber air duct 141 is normally in sealing fit with the second top opening corresponding to the top wall of the freezing chamber inner container 130.

In the transportation process of the refrigerator 10, the freezing chamber air duct 141 is liable to fall down when being collided, so that a gap appears between the first top opening 141g at the top end of the freezing chamber air duct 141 and the second top opening 130d corresponding to the top wall of the freezing inner container 130. During the operation of the refrigerator 10, the airflow in the variable temperature chamber 1311 enters the freezing chamber 132 through the slits, and because the airflow temperature of the variable temperature chamber 1311 is generally higher than that of the freezing chamber 132, frost is formed near the top end of the freezing chamber air duct 141, which affects the temperature of the freezing chamber 132 and the delivery of the cooling airflow. In this embodiment, the bottom wall of the freezing liner 130 and the lower section of the freezing chamber air duct 141 are specially designed, so that the freezing chamber air duct 141 can be prevented from falling down due to collision during transportation of the refrigerator 10, and the refrigeration effect of the refrigerator 10 during operation can be ensured.

The freezing chamber 130 and the cooling chamber are described in detail below:

as shown in fig. 3 and 4, in some embodiments, the regions of the two lateral side walls of the freezing inner container 130 corresponding to the cooling chamber are respectively protruded toward the cooling chamber to form a second limiting protrusion 130 b.

The refrigerator 10 further includes a cover plate constituting a top wall and a front wall of the cooling chamber, and defining the cooling chamber together with the two second limit bosses 130b, a section of the side walls of the two freezing containers 130 located in front of the corresponding second limit bosses 130b, the bottom wall of the freezing container 130, and the rear wall of the freezing container 130. As shown in fig. 2, the hood panel includes a top cover 1021 and at least one front cover set 102, the top cover 1021 is located above the evaporator 101, and at least one front return air inlet is formed at a front side of each front cover set 102, so that the return air flow of the freezing compartment 132 enters the cooling compartment through the at least one front return air inlet and is cooled by the evaporator 101, thereby forming an air flow circulation between the cooling compartment and the freezing compartment 132.

In some embodiments, as shown in fig. 1, there are two front cover groups 102, two front cover groups 102 are distributed in the transverse direction, and two front return air inlets, a first front return air inlet 102a and a second front return air inlet 102b, are formed at the front side of each front cover group 102.

The side wall of the freezing inner container 130 is formed with a side return air inlet (not shown) which communicates with the temperature change inner container 131 through a side return air passage (not shown) to convey the return air flow of the temperature change chamber 1311 into the cooling chamber for cooling by the side return air passage, thereby forming an air flow circulation between the temperature change chamber 1311 and the cooling chamber.

Preferably, the side return air inlet is formed in a section of the side wall of the freezing inner container 130 located in front of the corresponding second limiting boss 130b, so that the side return air inlet is further in front, the return air flow of the temperature change chamber 1311 flows backwards from the front of the evaporator 101, the heat exchange path between the return air flow of the temperature change chamber 1311 and the evaporator 101 is prolonged, and the heat exchange efficiency is improved.

In some embodiments, as shown in fig. 3 and 5, the bottom wall of the freezing inner container 130 includes, from back to front, a first inclined straight section 1301 extending obliquely downward forward, a second inclined straight section 1302 extending obliquely downward forward, a third inclined straight section 1303 extending obliquely downward forward, a water receiving section 1304 positioned below the evaporator 101, and a front bending section 1305 extending forward and bent from the water receiving section 1304. The first inclined straight section 1301 is formed with the first limit projection 130a at a position adjacent to the rear end.

In the present embodiment, by designing the bottom wall of the freezing inner container 130 to have the above-mentioned special configuration, a certain space is left below the first inclined straight section 1301, the second inclined straight section 1302 and the third inclined straight section 1303, which facilitates the arrangement of the compressor compartment; and is convenient to match with the appearance of the shell of the air supply fan 103, and the space occupied by the cooling chamber is reduced.

In some embodiments, the projection line of the first inclined straight section 1301 on the vertical plane parallel to the side wall of the freezing inner container 130 may form an angle e of 5 ° to 15 ° with the horizontal straight line extending back and forth, for example, e is 5 °, 8 °, 10 °, 12 °, 15 °. An angle θ between a projection line of the second inclined straight section 1302 on a vertical plane parallel to the side wall of the freezing inner container 130 and a horizontal straight line extending back and forth may be 20 ° to 35 °, for example, θ is 20 °, 25 °, 33 °, 35 °. The projection line of the third inclined straight section 1303 on the vertical plane parallel to the sidewall of the freezing inner container 130 may form an angle μ of 5 ° to 15 °, for example, μ is 5 °, 8 °, 10 °, 12 °, 15 °.

The evaporator 101 is arranged right above the water receiving section 1304, the water receiving section 1304 may be funnel-shaped and is used for receiving condensed water of the evaporator 101, a water outlet is formed at the lowest point of the water receiving section 1304, a drain pipe is connected to the water outlet and discharges the condensed water of the evaporator 101 to an evaporation pan in the compressor room, generally, the evaporation pan is arranged below the condenser, and the condensed water discharged to the evaporation pan absorbs heat around the condenser for evaporation.

The air supply fan 103 is located behind the evaporator 101, and includes a casing and an impeller 1031 arranged in the casing, the casing includes a lower box body 1032 and an upper cover body 1033 arranged on the lower box body 1032, the lower box body 1032 and the upper cover body 1033 can be buckled and connected, and the casing is convenient to disassemble and assemble.

As shown in fig. 3, a third limiting boss 130c protruding upward is formed at a position adjacent to the rear end on each of two lateral sides of the bottom wall of the freezing inner container 130, and a space for arranging the air supply fan 103 is defined by the two third limiting bosses 130c and a section of the bottom wall of the freezing inner container 130 located behind the evaporator 101.

The third limiting boss 130c may include a first portion formed at the first inclined straight section 1301 and a second portion formed at the second inclined straight section 1302. The section of the bottom wall of the freezing inner container 130 located behind the evaporator 101 is defined by the first inclined straight section 1301, the second inclined straight section 1302 and the third inclined straight section 1303.

The third limit boss 130c, the first inclined straight section 1301, the second inclined straight section 1302, and the third inclined straight section 1303 define an area where the air supply fan 103 is arranged. The aforementioned first limit projection 130a should be located between the two third limit projections 130 c.

Each of the third position-limiting bosses 130c may be formed with a first mounting hole (not numbered). The cabinet of the air supply fan 103 is formed with second mounting holes 103c1 corresponding one-to-one to the two first mounting holes to mount the cabinet of the air supply fan 103 on the bottom wall of the freezing inner container 130 by mounting members (e.g., screws) sequentially passing through the second mounting holes 103c1 and the first mounting holes. For example, as shown in fig. 8 and 10, one mounting plate 103c is formed on each of the lateral sides of the side walls of the lower case 1032, and the mounting plate 103c is formed with a second mounting hole 103c1 corresponding to the corresponding first mounting hole.

The air supply fan 103 and the freezing chamber air duct 141 are specifically described below:

the upper cover 1033 is open at both a rear end and an upper portion, that is, the upper cover 1033 includes a top wall 103a and a first side wall 103d extending downward from the top wall 103 a; accordingly, the lower case 1032 is open at both the rear end and the lower portion, and the lower case 1032 includes a bottom wall 103b and a second sidewall extending upward from the bottom wall 103 b.

The blower 103 may be a centrifugal blower, a top wall 103a of the upper cover 1033 forms a housing air inlet 1033a, and a rear end of the upper cover 1033 and a rear end of the lower box 1032 define a housing air outlet.

The horizontal distance α between the front end face of the casing of the air supply fan 103 and the rear end face of the evaporator 101 may be 15mm to 35mm, for example, α is 15mm, 20mm, 25mm, 30 mm, 35mm, so as to avoid frosting of the air supply fan 103 due to too small distance between the air supply fan 103 and the evaporator 101.

The bottom wall of the lower box 1032 of the casing may include, from back to front, a first horizontal straight section 103b2, a fourth inclined straight section (not numbered) extending obliquely forward and downward, and a fifth inclined straight section (not numbered) extending obliquely forward and downward, in this order, wherein the first horizontal straight section 103b2 is located above the rear section of the first inclined straight section 1301 and connected to the joint section, the fourth inclined straight section is located above the front section of the first inclined straight section 1301 and the second inclined straight section 1302 and parallel to the second inclined straight section 1302, and the fifth inclined straight section is located above the third inclined straight section 1303 and parallel to the third inclined straight section 1303. Therefore, the bottom wall of the lower box body 1032 is matched with the bottom wall of the freezing inner container 130, the interval gap between the lower box body 1032 and the bottom wall of the freezing inner container 130 is reduced, and the overall height of the machine shell is reduced.

The gap between the lower box body 1032 and the bottom wall of the freezing inner container 130 is filled with sponge strips to seal the gap and prevent air leakage.

The bottom wall 103b of the lower case 1032 may be formed with at least one water discharge hole 103b3, two in number, as shown in fig. 10, of the water discharge holes 103b3, so as to discharge condensed water that may be formed.

The top wall 103a of the upper cover 1033 of the casing may include a sixth inclined straight section (not numbered) extending obliquely forward and downward, a seventh inclined straight section (not numbered) extending obliquely forward and downward, and an eighth inclined straight section (not numbered) extending obliquely forward and downward, which are connected in sequence from back to front.

Wherein the sixth inclined straight section may be parallel to the first inclined straight section 1301 of the bottom wall of the freezing inner container 130, and the seventh inclined straight section may be parallel to the fourth inclined straight section of the bottom wall 103b of the lower box 1032. Thus, the overall appearance of the casing of the air supply fan 103 is matched with the freezing inner container 130, the arrangement height of the casing is reduced, and the space of the cooling chamber is reduced.

After the upper cover 1033 and the lower box 1032 are fastened together, the first sidewall 103d of the upper cover 1033 is located inside the second sidewall of the lower box 1032, that is, the first sidewall 103d of the upper cover 1033, the top wall 103a of the upper cover 1033 and the bottom wall 103b of the lower box 1032 define an air supply duct inside the housing.

As shown in fig. 9, the first side wall 103d of the upper cover 1033 has a spiral line and is configured as a spiral duct, so as to better guide the air to flow toward the outlet of the casing and reduce noise. The inner surface of the top wall 103a of the upper cover 1033 is formed with a spiral groove 103a3, and the spiral groove 103a3 cooperates with the first side wall 103d of the upper cover 1033 to better guide the airflow. For example, a spiral groove 103a3 is formed on the inner surface of the seventh inclined straight section of the top wall 103a of the upper cover 1033. The scroll groove 103a3 is formed with the aforementioned housing inlet 1033a, and the impeller 1031 is disposed in the area defined by the scroll groove 103a3 and the lower case 1032.

The rotation axis of the impeller 1031 is perpendicular to the fourth straight inclined section, that is, the included angle β between the rotation axis of the impeller 1031 and the vertical line is the same as θ, that is, β may be 20 ° to 35 °, for example, β is 20 °, 25 °, 33 °, 35 °.

The freezing chamber air duct 141 and the assembly of the freezing chamber air duct 141 and the air supply fan 103 will be specifically described below:

freezer air duct 141 includes an air duct front cover 1411 on a front side and an air duct rear cover 1412 on a rear side, and air duct front cover 1411 and air duct rear cover 1412 may be snap-fit. The air duct front cover 1411 is detachably connected to the upper cover 1033, and the air duct rear cover 1412 is detachably connected to the lower box 1032, so that the cabinet air outlet is communicated with the air duct inlet of the freezing chamber air duct 141.

Among the current refrigerator 10, the wind channel is the integral type structure with the casing of fan more, inconvenient transportation, can't modularize, and in this embodiment, freezing room wind channel 141 adopts split type design with the casing of air supply fan 103, realizes the modularization, makes things convenient for dismouting and transportation, improves the yields.

As shown in fig. 6, duct back cover plate 1412 may include a vertically extending rear riser section 1412e located at a lower portion and a joint section extending by bending a lower end of rear riser section 1412e to a lower front portion, the joint section being located below duct front cover plate 1411, a front end of the joint section and a lower end of duct front cover plate 1411 defining an air outlet duct air inlet. The duct back cover 1412 is detachably connected to the lower case 1032 through a joint section on which the aforementioned fitting portion 141f is formed.

In this embodiment, the duct back cover 1412 is designed to have a connecting section extending from the lower end of the rear riser section 1412e to the front and downward direction, so as to be connected to the casing of the front blower 103, and to promote the air flow in the casing to smoothly enter the freezing chamber duct 141, thereby reducing noise. In addition, the joint section forms a matching part 141f matched with the limiting groove 130a1 on the bottom wall of the freezing inner container 130, so that the air duct rear cover plate 1412 can be positively matched with the freezing inner container 130 and the shell of the air supply fan 103, and the whole layout is more compact and reasonable.

As shown in fig. 6, the engaging section of duct back cover 1412 includes a curved transition section 1412a curved forward and downward from rear riser section 1412e, a ninth straight inclined section 1412b inclined forward and downward from curved transition section 1412a, and a second straight horizontal section 1412c horizontally extending forward from ninth straight inclined section 1412 b.

The front end of the second horizontal straight section 1412c is provided with a first vertical plate 1412d extending vertically downward, the first vertical plate 1412d extends from one lateral side of the second horizontal straight section 1412c to the other lateral side, the front vertical surface of the first vertical plate 1412d is provided with at least one first buckle 141c protruding forward, and the rear vertical surface of the first vertical plate 1412d is provided with the aforementioned matching part 141f protruding rearward.

The rear end of the bottom wall 103b of the lower box body 1032 is provided with a second vertical plate 103b1 extending vertically downward, the second vertical plate 103b1 extends from one lateral side of the bottom wall 103b of the lower box body 1032 to the other lateral side, the lower end of the second vertical plate 103b1 is provided with a first notch 103b11 corresponding to and adapted to at least one first buckle 141c, and the first buckle 141c is clamped into the corresponding first notch 103b11 and hooked with the front vertical surface of the second vertical plate 103b1, so that the lower box body 1032 is buckled on the air duct rear cover plate 1412.

The rear end of the bottom wall 103b of the lower box 1032 is also the rear end of the first horizontal straight section 103b2 of the bottom wall 103b of the lower box 1032.

There are two first catches 141c and three first catches 141c laterally spaced apart, and correspondingly, there are three first notches 103b11 and three first notches 103b11 laterally spaced apart.

When lower box 1032 is buckled with air duct rear cover plate 1412, the front vertical surface of first vertical plate 1412d is close to and attached to the rear vertical surface of second vertical plate 103b1, a small gap exists between the front vertical surface and the rear vertical surface, and a sponge strip can be inserted into the gap to avoid air leakage.

As shown in fig. 6, the duct front cover 1411 includes a vertically extending front vertical plate 1411a at a lower portion, and at least one second catch 141b protruding forward is formed on a front wall of the front vertical plate 1411 a.

The rear end of the top wall 103a of the upper cover 1033 is formed with a third vertical plate 103a1 extending upward, the third vertical plate 103a1 extends from one lateral side to the other lateral side of the top wall 103a of the upper cover 1033, the upper end of the third vertical plate 103a1 is formed with at least one second notch 103a11 corresponding to and adapted to at least one second buckle 141b, and the second buckle 141b is clamped into the corresponding second notch 103a11 and hooked with the front vertical surface of the third vertical plate 103a1, so as to fasten the upper cover 1033 to the duct front cover 1411.

The rear end of the top wall 103a of the upper cover 1033 is also the rear end of the sixth inclined straight section.

As shown in fig. 7, there are two second hooks 141b, and two second hooks 141b are laterally spaced, and correspondingly, there are two second notches 103a11, and two second notches 103a11 are laterally spaced.

The transverse dimension of the front riser segment 1411a should be equal to or greater than the transverse dimension of the third riser 103a1, as shown in fig. 8, the transverse dimension of the front riser segment 1411a is substantially the same as the transverse dimension of the third riser 103a1, so that when the upper cover 1033 is fastened to the duct front cover 1411, the front riser segment 1411a can completely shield the third riser 103a 1. When the upper cover body 1033 is buckled with the air duct front cover plate 1411, the rear vertical face of the front vertical plate section 1411a is close to and attached to the front vertical face of the third vertical plate 103a1, a small gap exists between the front vertical plate section 1411a and the third vertical plate 103a1, and a sponge strip can be plugged into the gap to avoid air leakage.

The rear wall of the front riser section 1411a may be formed with a plurality of ribs 141e projecting rearwardly to increase the strength of the front riser section 1411 a.

The front vertical surface of the third vertical plate 103a1 is formed with a plurality of ribs 103a2 distributed at intervals along the transverse direction, the third vertical plate 103a1 is further formed with an installation part 141h protruding above the third vertical plate 103a1, for example, the installation part 141h is formed at the transverse middle position of the third vertical plate 103a1, the installation part 141h is formed with a first screw hole, the region of the front vertical plate section 1411a corresponding to the installation part 141h is formed with a second screw hole corresponding to the first screw hole, so that the upper cover body 1033 and the air duct front cover plate 1411 are assembled by screws penetrating through the first screw hole and the second screw hole.

The two transverse sides of the air duct rear cover plate 1412 are also respectively formed with a sealing portion 141d extending forward, each sealing portion 141d extends into the casing of the air supply fan 103, and is used for sealing the two transverse sides of the joint of the freezing chamber air duct 141 and the casing of the air supply fan 103, namely, the joint of the two transverse sides when the air duct rear cover plate 1412 is fastened with the lower box body 1032, and the joint of the two transverse sides when the air duct front cover plate 1411 is fastened with the upper cover body 1033, so as to avoid air leakage.

As shown in fig. 6 and 8, the section defined by the rear riser segment 1412e and the joint segment of the duct back cover plate 1412 is referred to as a lower plate segment of the duct back cover plate 1412, and two sealing portions 141d are formed inside the two lateral ends of the lower plate segment, respectively.

As described above, by the special structure of the freezing inner container 130 and the special structure of the air duct rear cover plate 1412, the frost formation around the top end of the freezing chamber air duct 141 due to the dropping of the freezing chamber air duct 141 is avoided, and the refrigerating effect in the operation process of the refrigerator 10 is ensured; the space layout in the cooling chamber is more compact and the occupied space of the cooling chamber is reduced through the matching of the special structure of the shell of the air supply fan 103 and the special structure of the bottom wall of the freezing inner container 130, so that a larger storage volume is provided for the freezing chamber 132 above the cooling chamber; in addition, the split design of the freezing chamber air duct 141 and the casing of the air supply fan 103 is realized through the special structure of the air duct rear cover plate 1412, the special structure of the air duct front cover plate 1411 and the special structure of the casing of the air supply fan 103, and the sealing performance of the assembling of the freezing chamber air duct 141 and the casing of the air supply fan 103 is ensured.

In the refrigerator 10 of the present embodiment, the bottom of the refrigerator body 100 defines a press chamber (not shown) located behind the cooling chamber, and as before, the freezing chamber 132 does not give way for the press chamber any more, so as to ensure the depth of the freezing chamber 132, and facilitate the placement of the large-sized and difficult-to-separate articles.

The refrigerator 10 further includes a heat dissipation fan (not shown), which may be an axial fan, and the compressor, the heat dissipation fan, and the condenser (not shown) are sequentially disposed in the press compartment at intervals in the transverse direction. The bottom wall of the box 100 defines a bottom air inlet corresponding to the condenser and a bottom air outlet corresponding to the compressor, which are transversely arranged, and the heat dissipation fan is configured to suck ambient air from the ambient environment of the bottom air inlet and promote the air to flow through the condenser and then the compressor, and then flow into the ambient environment from the bottom air outlet, so as to dissipate heat from the condenser and the compressor.

The refrigerator 10 of the present embodiment may be disposed in a built-in type for a built-in cabinet to reduce the space occupied by the refrigerator 10. In order to improve the overall aesthetic measure of the refrigerator 10 and reduce the space occupied by the refrigerator 10, the reserved space between the rear wall of the refrigerator 10 and the cabinet is small, which results in low heat dissipation efficiency of the front and rear air inlet and outlet modes adopted in the prior art, and if the heat dissipation is ensured, the distance between the rear wall of the refrigerator 10 and the cabinet must be increased, but at the same time, the space occupied by the refrigerator 10 is increased.

In the refrigerator 10 of the present embodiment, the bottom air inlet and the bottom air outlet which are transversely arranged are defined on the bottom wall of the box body 100, and the heat dissipation airflow circulates at the bottom of the refrigerator 10, so that the space between the refrigerator 10 and the supporting surface is fully utilized, the distance between the rear wall of the refrigerator 10 and the cabinet does not need to be increased, and the heat dissipation efficiency is improved while the space occupied by the refrigerator 10 is reduced.

The four corners of the bottom wall of the box 100 may be provided with support rollers (not shown), and the box 100 is placed on a support surface by the four support rollers, so that a certain space is formed between the bottom wall of the box 100 and the support surface.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A refrigerator for preventing a freezing chamber air duct from moving downwards is characterized by comprising:

the refrigerator comprises a refrigerator body and a refrigerating device, wherein the refrigerator body comprises a refrigerating liner positioned at the lowest part, and a cooling chamber and a freezing chamber positioned above the cooling chamber are defined in the refrigerating liner;

a freezing chamber air duct arranged inside the rear wall of the freezing inner container and configured to convey at least part of the cooling air flow into the freezing chamber;

the air supply fan is arranged in the cooling chamber and is configured to promote the cooling airflow to enter the freezing chamber air duct;

the rear section of the bottom wall of the freezing inner container is provided with at least one first limiting boss protruding upwards, and each first limiting boss is provided with a limiting groove; the lower section of the freezing chamber air duct is formed with a matching part matched with the limiting groove, and the matching part is matched with the limiting groove to prevent the freezing chamber air duct from moving downwards.

2. The refrigerator as claimed in claim 1, wherein the refrigerator further comprises a cover for covering the opening of the door

Areas, corresponding to the cooling chamber, of the two transverse side walls of the freezing inner container respectively protrude towards the cooling chamber so as to form a second limiting boss respectively;

the refrigerator also comprises a cover plate, wherein the cover plate forms the top wall and the front wall of the cooling chamber, and defines the cooling chamber together with the two second limiting bosses, the sections of the side walls of the two freezing inner containers in front of the corresponding second limiting bosses, the bottom wall of the freezing inner container and the rear wall of the freezing inner container.

3. The refrigerator as claimed in claim 1, wherein the refrigerator further comprises a cover for covering the opening of the door

The freezing chamber air duct comprises an air duct front cover plate positioned on the front side and an air duct rear cover plate positioned on the rear side and limiting an air supply air duct with the air duct front cover plate;

the air duct rear cover plate comprises a rear vertical plate section which is positioned at the lower part and extends vertically and a joint section which is bent and extends from the lower end of the rear vertical plate section to the front lower part, the joint section is positioned below the air duct front cover plate, and an air duct air inlet is defined by the front end of the joint section and the lower end of the air duct front cover plate;

the engagement section is formed with the fitting portion.

4. The refrigerator as claimed in claim 3, wherein the refrigerator further comprises a cover for covering the opening of the door

The air supply fan is positioned behind the evaporator and comprises a casing and an impeller arranged in the casing, the casing comprises a lower box body and an upper cover body buckled on the lower box body, and an air outlet of the casing is defined by the rear end of the upper cover body and the rear end of the lower box body;

the air duct front cover plate is detachably connected with the upper cover body, and the air duct rear cover plate is detachably connected with the lower box body through the joint section, so that the shell air outlet is communicated with the air duct air inlet.

5. The refrigerator as claimed in claim 4, wherein the refrigerator further comprises a cover for covering the opening of the door

And the transverse two sides of the bottom wall of the freezing inner container are close to the rear end, and a third limiting boss protruding upwards is formed respectively, and the space for arranging the air supply fan is limited by the two third limiting bosses and the section of the bottom wall of the freezing inner container positioned at the rear of the evaporator.

6. The refrigerator as claimed in claim 4, wherein the refrigerator further comprises a cover for covering the opening of the door

The bottom wall of the freezing inner container comprises a first inclined straight section, a second inclined straight section, a third inclined straight section, a water receiving section and a front bending section, wherein the first inclined straight section, the second inclined straight section, the third inclined straight section, the water receiving section and the front bending section are connected in sequence from back to front;

the first inclined straight section is provided with at least one first limiting boss at a position close to the rear end.

7. The refrigerator as claimed in claim 6, wherein the refrigerator further comprises a cover for covering the opening of the door

The bottom wall of the lower box body comprises a first horizontal straight section, a fourth inclined straight section and a fifth inclined straight section, wherein the first horizontal straight section, the fourth inclined straight section and the fifth inclined straight section are sequentially connected from back to front;

the fourth inclined straight section is located above the front section of the first inclined straight section and the second inclined straight section and is parallel to the second inclined straight section, and the fifth inclined straight section is located above the third inclined straight section and is parallel to the third inclined straight section.

8. The refrigerator as claimed in claim 7, wherein the refrigerator further comprises a cover for covering the opening of the door

The air supply fan is a centrifugal fan, and a rotating shaft of the impeller is vertical to the fourth inclined straight section;

the top wall of the upper cover body forms an organic shell air inlet.

9. The refrigerator as claimed in claim 6, wherein the refrigerator further comprises a cover for covering the opening of the door

The included angle between the projection line of the first inclined straight section on the vertical surface parallel to the side wall of the freezing inner container and the horizontal straight line extending forwards and backwards is 5-15 degrees;

the included angle between the projection line of the second inclined straight section on the vertical surface parallel to the side wall of the freezing inner container and the horizontal straight line extending forwards and backwards is 30-40 degrees;

the included angle between the projection line of the third inclined straight section on the vertical plane parallel to the side wall of the freezing inner container and the horizontal straight line extending forwards and backwards is 5-15 degrees.

10. The refrigerator of claim 1, wherein the cabinet further comprises: