CN111609611A

CN111609611A - Refrigerator for heat radiation by centrifugal fan

Info

Publication number: CN111609611A
Application number: CN201910142758.1A
Authority: CN
Inventors: 王晶; 曹东强; 李孟成; 聂圣源; 苗建林
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: 2020-09-01

Abstract

The invention provides a refrigerator for dissipating heat by using a centrifugal fan, wherein a compressor and a condenser are transversely distributed in a press cabin defined at the bottom of the refrigerator at intervals, a first bottom opening positioned at the front side of the press cabin is defined on the bottom wall of a box body, the centrifugal fan is arranged at one transverse side of the first bottom opening, is provided with a fan outlet communicated with the space below the bottom wall of the box body, and is configured to suck ambient air from the first bottom opening, promote the ambient air to pass through the condenser and the compressor, then flow to the lower part of the bottom wall of the box body from the fan outlet and flow forwards to the ambient environment, so that heat dissipation airflow circulation is formed below the bottom wall of the press cabin, the space occupied by the refrigerator is reduced, and meanwhile, the heat dissipation effect of the press cabin can be ensured; in addition, the lateral width dimension of the press compartment is reduced, so that the refrigerator can be adapted to smaller platforms.

Description

Refrigerator for heat radiation by centrifugal fan

Technical Field

The invention relates to the technical field of household appliances, in particular to a refrigerator capable of dissipating heat by using a centrifugal fan.

Background

For an integral cabinet assembled in a kitchen, in order to improve the aesthetic property and the integrity of the cabinet, the integral cabinet usually adopts an embedded refrigerator, the space of the embedded refrigerator is limited, and the storage space and the heat dissipation problem of the refrigerator need to be considered in the structural design of the refrigerator.

At present, the embedded refrigerator generally forms a heat dissipation circulation air path in the front and rear direction. However, the reserved space between the back of the embedded refrigerator and the cabinet is small, the front and back airflow is not smooth, the heat dissipation efficiency is low, and in order to ensure the front and back airflow to smoothly circulate, the reserved space between the embedded refrigerator and the cabinet needs to be increased, which brings the problem of increasing the occupied space of the refrigerator.

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.

A further object of the present invention is to improve the heat dissipation efficiency of the compressor compartment and to improve the heat exchange efficiency of the return air with the evaporator and to facilitate the drainage of the condensed water.

The present invention provides a refrigerator, including:

the refrigerator comprises a box body, a compressor chamber, a condenser, a first bottom opening and a second bottom opening, wherein the bottom of the box body is limited with the compressor chamber, the compressor and the condenser are distributed in the box body at intervals along the transverse direction, and the bottom wall of the box body is limited with the first bottom opening positioned on the front side of the compressor chamber;

a centrifugal fan disposed on a lateral side of the first bottom opening, having a fan outlet in communication with the space below the bottom wall of the tank, configured to draw ambient air from the first bottom opening and force the ambient air to pass through the condenser, the compressor, and then from the fan outlet to below the bottom wall of the tank and onward to the ambient environment.

Optionally, the bottom wall of the box body further defines a second bottom opening located on one lateral side of the first bottom opening;

the first bottom opening is located below a front side of the condenser, and the second bottom opening is located below a front side of the compressor; or the first bottom opening is located below the front side of the compressor and the second bottom opening is located below the front side of the condenser.

Optionally, centrifugal fan is by preceding to be backward and set up in tilt up the second end opening part, centrifugal fan's lower surface is formed with the fan import, centrifugal fan's preceding terminal surface be formed with the communicating fan export of diapire below space of box.

Optionally, the refrigerator further comprises:

the front and rear extending wind shielding strips are arranged on the lower surface of the bottom wall of the box body and are used for isolating the first bottom opening from the second bottom opening, so that when the refrigerator is placed on a supporting surface, the space between the bottom wall of the box body and the supporting surface is transversely divided.

Optionally, two wind-shielding strips are arranged on the lower surface of the bottom wall of the box body at intervals in the transverse direction and are arranged to separate an arrangement space between the first bottom opening and the second bottom opening, the wind-shielding strip adjacent to the first bottom opening is arranged to isolate the first bottom opening from the arrangement space, and the wind-shielding strip adjacent to the second bottom opening is arranged to isolate the second bottom opening from the arrangement space;

the centrifugal fan is disposed at the arrangement space and configured to draw in ambient air from the first and second bottom openings, cause the ambient air to pass through the condenser, the compressor, and then flow from the fan outlet to below the bottom wall of the case and forward to the ambient environment.

Optionally, the refrigerator further comprises:

the storage inner container is positioned in the upper front of the press cabin, and a cooling space positioned below and a storage space positioned right above the cooling space are defined in the storage inner container;

an evaporator disposed in the cooling space and configured to cool an airflow entering the cooling space to provide a cooled airflow at least to the storage space.

Optionally, the refrigerator further comprises:

the top cover divides the storage liner into the storage space positioned above and the cooling space positioned below;

the air return cover is arranged at the front end of the top cover and defines the cooling space together with the top cover and the bottom wall of the storage liner;

the return air cover includes:

the front wall surface of the air return frame body is provided with a first front opening, and the rear end of the air return frame body is open;

the air return rear cover is inserted into the air return frame body from the open position of the rear end of the air return frame body, and is arranged to divide the first front opening into a first front air return inlet positioned above and a second front air return inlet positioned below, so that the air return of the storage space can flow back to the cooling space through the first front air return inlet and the second front air return inlet.

Optionally, the return air frame body comprises a first inclined flow guide section extending from the upper end of the front wall surface of the return air frame body to the rear upper direction and a second inclined flow guide section extending from the position, close to the lower end, of the front wall of the return air frame body to the rear lower direction;

the air return rear cover comprises a third flow guide inclined section extending from the rear to the front lower part, a fourth flow guide inclined section extending from the lower end of the third flow guide inclined section to the front lower part, a fifth flow guide inclined section extending from the front end of the fourth flow guide inclined section to the rear lower part and a sixth flow guide inclined section extending from the lower end of the fifth flow guide inclined section to the rear lower part;

the first front return air inlet is formed in the first front return air inlet, the second front return air inlet is formed in the second front return air inlet, and the second front return air inlet is formed in the second front return air inlet;

and the second air return duct positioned behind the second front air return inlet is limited by the second flow guide inclined section and the sixth flow guide inclined section.

Optionally, a joint of the fourth flow guide inclined section and the fifth flow guide inclined section is located under the first flow guide inclined section, so that condensed water condensed on the return air frame body drips to the joint of the fourth flow guide inclined section and the fifth flow guide inclined section along the first flow guide inclined section, drips to the second flow guide inclined section along the fifth flow guide inclined section, and further flows to the lower side of the evaporator.

Optionally, the lower surface of the top cover and the upper surface of the evaporator are distributed at intervals, and the front end of the top cover is located at the rear upper part of the front end of the evaporator, so that the top cover does not completely shield the upper surface of the evaporator;

the air return rear cover also comprises a shielding part which extends from the third flow guide inclined section to the front end of the top cover from the rear to the upper part so as to shield the section of the upper surface of the evaporator which is not shielded by the top cover;

and the shielding part is spaced from the upper surface of the evaporator to form an airflow bypass communicated with the second rear opening, so that at least part of return air entering through the second rear opening enters the evaporator through the airflow bypass and is cooled by the evaporator.

According to the refrigerator, the heat dissipation airflow circulation is formed below the bottom wall of the press cabin, the interval between the back of the embedded refrigerator and the cabinet does not need to be increased, the space occupied by the refrigerator is reduced, and meanwhile, the heat dissipation effect of the press cabin of the embedded refrigerator is ensured; in addition, the centrifugal fan is located on the transverse side of the first bottom opening on the front side of the compressor cabin and is not located on the same transverse direction with the compressor and the condenser, the transverse width size of the compressor cabin can be reduced, the refrigerator can be suitable for smaller platforms, and the compressor cabin can still be guaranteed to have good heat dissipation performance under the condition that the width direction space needs to be compressed.

Furthermore, in the refrigerator, the bottom wall of the refrigerator body and the space between the supporting surfaces are transversely separated by the wind shielding strips, airflow in the space on the left side of the wind shielding strips in the transverse direction is prevented from streaming with airflow in the space on the right side of the wind shielding strips in the transverse direction, and the heat dissipation efficiency is ensured.

Furthermore, in the refrigerator, the lowest space of the refrigerator is a cooling space, so that the height of the storage space above the cooling space is raised, the stooping degree of a user when the user takes and places articles in the storage space is reduced, and the use experience of the user is improved; in addition, two air return inlets which are distributed up and down are formed at the front side of the air return cover, so that the visual appearance is attractive, and fingers or foreign matters of children can be effectively prevented from entering the cooling space; moreover, the two air return areas which are distributed up and down can enable the air return to flow through the evaporator more uniformly after entering the cooling space, so that the problem that the front end face of the evaporator is easy to frost can be avoided to a certain extent, the heat exchange efficiency can be improved, the defrosting period can be prolonged, and the energy conservation and the high efficiency are realized.

Furthermore, in the refrigerator, the design structures of the inclined sections of the air return frame body and the air return rear cover can guide the condensed water formed on the air return cover, so that the water is drained conveniently, the water drop sound which can be sensed by human ears can be avoided, and the use experience of users is improved.

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 invention will be described in detail hereinafter, by way of illustration and not 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 an exploded schematic view of a refrigerator according to one embodiment of the present invention;

fig. 2 is a schematic view of a refrigerator according to another embodiment of the present invention, in which a door body and the like are hidden;

fig. 3 is a schematic view of a bottom structure of a refrigerator according to one embodiment of the present invention;

FIG. 4 is a schematic view of the components within the press compartment of a refrigerator according to one embodiment of the present invention;

fig. 5 is a bottom view of a refrigerator according to a first embodiment of the present invention;

fig. 6 is a bottom view of a refrigerator according to a second embodiment of the present invention;

fig. 7 is a schematic view of one direction of a refrigerator according to a first embodiment of the present invention;

fig. 8 is a bottom view of a refrigerator according to a third embodiment of the present invention;

fig. 9 is an exploded view of the return air frame and return air rear cover of the refrigerator in accordance with one embodiment of the present invention;

fig. 10 is a partial sectional view of a refrigerator according to one embodiment of the present invention; and

fig. 11 is an enlarged view of region B in fig. 10.

Detailed Description

The present embodiment provides a refrigerator 100, and the refrigerator 100 according to the embodiment of the present invention will be described below with reference to fig. 1 to 11. In the following description, the orientations or positional relationships indicated by "front", "rear", "upper", "lower", "lateral", etc. are orientations based on the refrigerator 100 itself as a reference, and "front", "rear" are directions indicated in fig. 2, 5, etc., as shown in fig. 5, and "lateral" refers to a direction parallel to the width direction of the refrigerator 100.

As shown in fig. 1 and 2, the refrigerator 100 may generally include a cabinet, the cabinet includes a housing 110 and at least one storage container disposed inside the housing 110, a space between the housing 110 and the storage container is filled with a thermal insulation material (forming a foaming layer), the storage container defines a storage space therein, and a corresponding door is further disposed at a front side of each storage container to open and close the corresponding storage space.

The lowermost storage bladder 130 may be a freezer bladder and, accordingly, the storage space 132 defined within the storage bladder 130 may be a freezer space.

In one embodiment, as shown in fig. 1, the refrigerator 100 further includes a refrigerating inner container 120 located right above the storage inner container 130, a refrigerating space 121 is defined in the refrigerating inner container, two storage drawers 137 capable of being pushed and pulled back and forth are distributed in the storage inner container 130, and two split refrigerating door bodies 136 are disposed at the front side of the refrigerating inner container 120 to open and close the refrigerating space 121.

In another embodiment, as shown in fig. 2, the refrigerator 100 further includes two temperature-changing liners 131 laterally distributed over the storage liner 130, and a refrigerating liner 120 located over the two temperature-changing liners 131. A variable temperature space is defined in each variable temperature liner 131, a refrigerating space 121 is defined in the refrigerating liner 120, and correspondingly, corresponding door bodies are respectively arranged on the front sides of the storage liner 130, the variable temperature liner 131 and the refrigerating liner 120.

As is well known to those skilled in the art, the temperature in the refrigerated space 121 is generally between 2 ℃ and 10 ℃, preferably between 4 ℃ and 7 ℃. The temperature in the refrigerated space is typically in the range of-22 ℃ to-14 ℃. The temperature-changing space can be adjusted to-18 ℃ to 8 ℃ at will. The optimum storage temperatures for different types of items are different and the locations suitable for storage are different, for example, fruit and vegetable food is suitable for storage in the refrigerated space 121 and meat food is suitable for storage in the refrigerated space.

As those skilled in the art can appreciate, the refrigerator 100 of the present embodiment may further include an evaporator 101, a compressor 104 and a condenser 105 disposed in the compressor compartment 180, a throttling element (not shown), and the like. The evaporator 101 is connected to the compressor 104, the condenser 105, and the throttle element via refrigerant lines to constitute a refrigeration cycle, and is cooled when the compressor 104 is started to cool air flowing therethrough.

As shown in fig. 1, a pressurized compartment 180 is defined at the bottom of the box, namely, the pressurized compartment 180 is defined at the lower rear part of the storage inner container 130, and in the embodiment shown in fig. 2, the pressurized compartment (not shown in fig. 2) is also defined at the bottom of the box. The compressor 104 and the condenser 105 are arranged in the nacelle 180 at a lateral spacing.

In particular, the bottom wall of the box defines a first bottom opening 110a located at the front side of the cabin, and a centrifugal fan 106, as a heat dissipation fan, is disposed on one lateral side of the first bottom opening 110a, having a fan outlet in communication with the space below the bottom wall of the box, configured to draw ambient air from the first bottom opening 110a and force the ambient air to pass through the condenser 105, the compressor 104, and then from the fan outlet to flow below the bottom wall of the box and onward to the ambient environment.

In this embodiment, the first bottom opening 110a is defined in the bottom wall of the box body, and the specially arranged centrifugal fan 106 is adopted to realize the circulation of the heat dissipation airflow below the bottom wall of the box body, so that the space occupied by the refrigerator 100 is reduced without increasing the distance between the back of the embedded refrigerator 100 and the cabinet, and the refrigeration effect of the embedded refrigerator 100 is ensured.

In addition, the centrifugal fan 106 is adopted as the heat dissipation fan, and the centrifugal fan 106 is disposed on one lateral side of the first bottom opening 110 a. Compared with the scheme that an axial flow fan is adopted as a heat radiation fan, and the compressor 104, the axial flow fan and the condenser 105 are sequentially arranged along the transverse direction, in the embodiment, the centrifugal fan 106 is positioned at the front side of the compressor compartment 180 and is not positioned on the same transverse direction as the compressor 104 and the condenser 105, so that the transverse width dimension of the compressor compartment 180 can be reduced, the refrigerator 100 can be suitable for a smaller platform, and the compressor compartment 180 can still be ensured to have good heat radiation performance under the condition that the space in the width direction needs to be compressed.

Further specifically, the refrigerator 100 further includes a wind shielding strip 107 extending in the front-rear direction, and the wind shielding strip 107 is configured to isolate a space below the bottom wall of the cabinet communicating with the outlet of the blower fan from the first bottom opening, so as to laterally partition a space between the bottom wall of the refrigerator 100 and a supporting surface when the refrigerator 100 is placed on a supporting surface, and to prevent air flow in the space on the lateral left side of the wind shielding strip 107 from being in series with air flow in the space on the lateral right side of the wind shielding strip 107.

In some embodiments, the bottom wall of the case also defines a second bottom opening 110b located on one lateral side of the first bottom opening 110 a. In the first embodiment, as shown in fig. 5 and 7, the first bottom opening 110a is located below the front side of the condenser 105, and the second bottom opening 110b is located below the front side of the compressor 104; in the second embodiment, as shown in fig. 6, the first bottom opening 110a is located below the front side of the compressor 104, and the second bottom opening 110b is located below the front side of the condenser 105.

As shown in fig. 7, the centrifugal fan 106 is disposed at the second bottom opening 110b in an upward inclined manner from front to back, a fan inlet 106a is formed on the lower surface of the centrifugal fan 106, and a fan outlet 106b communicating with the space below the bottom wall of the box body is formed on the front end surface of the centrifugal fan 106.

In embodiments where the first bottom opening 110a is located below the front side of the condenser 105 and the second bottom opening 110b is located below the front side of the compressor 104, as shown in fig. 5, the airflow circulation path is shown by the dashed arrows in fig. 5, and the centrifugal fan 106 is configured to cause the first bottom opening 110a to draw in ambient air and cause the ambient air to flow sequentially through the condenser 105, the compressor 104, and then onward from the fan outlet 106b to the ambient environment.

In embodiments where the first bottom opening 110a is located below the front side of the compressor 104 and the second bottom opening 110b is located below the front side of the condenser 105, as shown in fig. 6, the airflow circulation path is shown by the dashed arrows in fig. 6, and the centrifugal fan 106 is configured to cause the first bottom opening 110a to draw in ambient air and cause the ambient air to flow sequentially through the compressor 104, the condenser 105, and then forward from the fan outlet 106b into the ambient environment.

In the embodiment where the bottom wall of the box body defines the first bottom opening 110a and the second bottom opening 110b, the wind shielding strip 107 should be configured to isolate the first bottom opening 110a from the second bottom opening 110b, so as to transversely partition the space between the bottom wall of the box body and a supporting surface when the refrigerator 100 is placed on a supporting surface, thereby preventing the air flow in the space on the transverse left side of the wind shielding strip 107 from being series-connected with the air flow in the space on the transverse right side of the wind shielding strip 107 and ensuring the heat dissipation efficiency.

In the third embodiment, as shown in fig. 3, two wind shielding strips 107 are provided on the lower surface of the bottom wall of the box body at a lateral interval, and are arranged to separate the arrangement space between the first bottom opening 110a and the second bottom opening 110b, the wind shielding strip 107 adjacent to the first bottom opening 110a is arranged to isolate the first bottom opening 110a from the arrangement space, and the wind shielding strip 107 adjacent to the second bottom opening 110b is arranged to isolate the second bottom opening 110b from the arrangement space.

A centrifugal fan 106 is provided at the arrangement space, as shown in fig. 8, the dashed arrows in fig. 8 showing the airflow circulation path, the centrifugal fan 106 being configured to draw in ambient air from the first and

second bottom openings

110a, 110b, causing the ambient air to flow forward from the fan outlet 106b into the ambient environment via the condenser 105, the compressor 104.

In some embodiments, as shown in fig. 4, both lateral side walls of the nacelle 180 are formed with side vents 119a, and ambient air around the side vents 119a enters the nacelle 180 under the driving of the centrifugal fan 106. When the refrigerator 100 is used as a non-embedded refrigerator, the refrigerator 100 has certain airflow circulation spaces on both lateral sides, and under the driving of the centrifugal fan 106, the ambient airflow in the spaces can enter the compressor compartment 180 through the side vent holes 119a, so that the flow rate of the heat dissipation air is increased, and the heat dissipation efficiency of the compressor compartment 180 is further improved.

As shown in fig. 1 and 2, the outer case 110 includes two case side plates 111 extending in a horizontal direction, the two case side plates 111 extending in a vertical direction and forming two side walls of the refrigerator 100, and the two case side plates 111 respectively form a side opening 111a communicating with a corresponding side vent hole 119a, so that ambient air on both sides of the refrigerator 100 enters the compartment 180.

In some embodiments, as shown in fig. 4, a section of the rear wall of the compressor compartment 180 corresponding to the compressor 104 is formed with a first rear vent 116a, and a section corresponding to the condenser 105 is formed with a second rear vent 116b, when the refrigerator 100 is used as a non-embedded refrigerator, the rear portion of the refrigerator 100 has a certain airflow circulation space, and under the action of the centrifugal fan 106, ambient air around the first rear vent 116a and the second rear vent 116b enters the compressor compartment 180, so as to further increase the amount of heat dissipation airflow and improve the heat dissipation effect of the compressor compartment.

As shown in fig. 3, in particular, the housing 110 further includes a bottom plate, a support plate 112, two side plates 119, and a vertically extending back plate 116. The support plate 112 forms a bottom wall of the compressor compartment 180 for carrying the compressor 104 and the condenser 105, the two side plates 119 respectively form two lateral side walls of the compressor compartment 180, and the vertically extending back plate 116 forms a rear wall of the compressor compartment 180. The compressor 104 and the condenser 105 are arranged on the pallet 112 at intervals in the lateral direction in sequence.

More particularly, the bottom plate comprises a bottom horizontal section 113 located at the front side of the bottom and a bent section bent and extended from the rear end of the bottom horizontal section 113 to the rear and upward direction, the bent section extends to the upper side of the supporting plate 112, and the supporting plate 112 and the bottom horizontal section 113 together form the bottom wall of the box body. The bending section has an inclined section 114 located above the first bottom opening 110a and the second bottom opening 110 b.

Specifically, the bending section may include the aforementioned inclined section 114 extending obliquely upward and rearward from the rear end of the bottom horizontal section 113, a top inclined section 118 extending obliquely upward and rearward from the rear end of the inclined section 114, and a top horizontal section 115 extending rearward from the rear end of the top inclined section 118, and the support plate 112 is disposed at a distance from the bottom horizontal section 113 to form a bottom opening communicating with the external space by using a space between the front end of the support plate 112 and the rear end of the bottom horizontal section 113.

The compressor 104 and the condenser 105 are arranged on the supporting plate 112 at intervals in the transverse direction, and are located in a space defined by the supporting plate 112, the two side plates 119, the back plate 116 and the bent section.

The refrigerator 100 further includes a partition 117, the partition 117 being disposed behind the bent section, specifically, the partition 117 being disposed behind the inclined section 114, a rear portion of the partition 117 being connected with a front end of the tray 112, and a front portion of the partition 117 being connected with a rear end of the bottom horizontal section 113, thereby dividing a space (i.e., the aforementioned bottom opening) between the tray 112 and the bottom horizontal section 113 into the first bottom opening 110a and the second bottom opening 110 b.

The aforementioned wind shielding strip 107 may extend from the lower surface of the bottom horizontal section 113 to the lower surface of the support plate 112 and connect the lower ends of the partitions 117 to completely isolate the first and

second bottom openings

110a and 110b by the wind shielding strip 107 and the partitions 117.

In the third embodiment, as shown in fig. 8 (the partition 117 is not shown in fig. 8), two partitions 117 may be provided, and the two partitions 117 together partition the aforementioned bottom opening into a first bottom opening 110a, an arrangement space in which the centrifugal fan 106 is located, and a second bottom opening 110b which are laterally distributed in sequence, wherein one partition 117 is engaged with the corresponding wind shielding strip 107 to completely isolate the first bottom opening 110a from the space in which the centrifugal fan 106 is located, the other partition 117 is engaged with the corresponding wind shielding strip 107, and the second bottom opening 110b is completely isolated from the arrangement space in which the centrifugal fan 106 is located.

Further particularly, the storage bladder 130 defines therein a cooling space located therebelow, in which the evaporator 101 is arranged, and a storage space 132 located directly above the cooling space.

In the conventional refrigerator 100, the lowermost space of the refrigerator 100 is generally a storage space, the storage space is located at a lower position, and a user needs to bend down or squat down greatly to perform an operation of taking and placing objects in the lowermost storage space, which is inconvenient for the user to use, especially for the old; and, because the evaporimeter has taken up the rear region of below storing space for the depth of below storing space reduces, moreover, because the press cabin is located the rear portion of below storing space generally, below storing space inevitably will give way for the press cabin, leads to below storing space dysmorphism, is not convenient for the deposit of the great and difficult segmentation article of volume.

In the refrigerator 100 of the embodiment, the lowermost space of the refrigerator 100 is a cooling space, the height of the storage space 132 above the cooling space is raised, the stooping degree of the user when the user puts articles into and out of the storage space 132 is reduced, and the use experience of the user is improved. In addition, the depth size of the storage space 132 is guaranteed, the press cabin can be located below the rear side of the storage space 132, the storage space 132 does not need to give way for the press cabin, a rectangular space with a large volume and a regular shape is formed, the large-size and difficult-to-divide article can be placed conveniently, and the problem that a pain point of a large article cannot be placed in the storage space 132 is solved.

The evaporator 101 cools the air flow entering the cooling space to form a cooling air flow, at least a portion of the cooling air flow is delivered into the storage space 132 through the air supply duct 141, the air supply duct 141 may be disposed inside the rear wall of the storage liner 130 and is communicated with the cooling space, as shown in fig. 2, the air supply duct 141 is formed with a plurality of air supply outlets 141a communicated with the storage space 132.

In the embodiment shown in fig. 2, the refrigerator 100 further includes a temperature-varying air duct (not shown) for delivering the cooling air flow to the temperature-varying space, and the temperature-varying air duct and the air supply duct 141 can be controllably communicated through a temperature-varying damper (not shown) to introduce a part of the cooling air flow in the air supply duct 141 into the temperature-varying air duct.

In the embodiment shown in fig. 1 and 2, the refrigerator 100 may further include a refrigerating air duct (not shown) for delivering a cooling air flow to the refrigerating space, and the refrigerating air duct may be controllably communicated with the air supply duct 141 through a refrigerating damper to introduce a portion of the cooling air flow of the air supply duct 141 into the refrigerating air duct. In some alternative embodiments, another evaporator may be disposed in the refrigerating inner container 120 to cool the refrigerating space 121 by air cooling or direct cooling, so as to form the refrigerator 100 of the dual refrigerating system, and prevent odor tainting between the storage space 132 and the refrigerating space 121.

In some embodiments, a blower for accelerating the airflow may be located behind the evaporator 101, and the air outlet end of the blower is connected to the air inlet end of the air duct 141, and configured to promote the cooling airflow to enter the air duct 141, so as to accelerate the airflow circulation and increase the cooling speed. The blower may be a centrifugal fan, an axial flow fan, or a cross flow fan.

The refrigerator 100 further includes at least one air return cover 102 disposed at a front end of the top cover 103, and defining the cooling space together with the top cover 103 and a bottom wall of the storage container 130.

As shown in fig. 9, each of the return air covers 102 includes a return air frame 1021 and a return air rear cover 1022 located on the front side, the front wall of the return air frame 1021 is formed with a first front opening 102c, the rear end of the return air frame 1021 is open, and the return air rear cover 1022 is inserted into the return air frame 1021 from the open rear end of the return air frame 1021 and is configured to divide the first front opening 102c into a first front return air inlet 102b located above and a second front return air inlet 102a located below, so that the return air in the storage space 132 flows back to the cooling space through the first front return air inlet 102b and the second front return air inlet 102a and is cooled by the evaporator 101, thereby forming an air flow circulation between the storage space 132 and the cooling space.

In this embodiment, two air return inlets (a first front air return inlet 102b and a second front air return inlet 102a) are formed at the front side of the air return cover 102 and are distributed up and down, so that the visual appearance is attractive, and fingers or foreign matters of children can be effectively prevented from entering a cooling space; moreover, the two air return areas distributed up and down can enable the air return to flow through the evaporator 101 more uniformly after entering the cooling space, so that the problem that the front end face of the evaporator 101 is easy to frost can be avoided to a certain extent, the heat exchange efficiency can be improved, the defrosting period can be prolonged, and the energy conservation and the high efficiency are realized.

The number of the wind return covers 102 may be two, the two wind return covers 102 are distributed at intervals in the transverse direction, and a vertical beam (not shown) is disposed between the two wind return covers 102 and vertically extends upward to the top wall of the storage liner 130 to divide the front side of the storage liner 130 into two areas distributed in the transverse direction.

The front side of the storage bladder 130 may be provided with two door bodies (not shown) that are split to open and close two areas separated by the vertical beam, respectively.

More particularly, as shown in fig. 9 to 11, the return air frame 1021 includes a first flow guiding inclined section 1021a extending from the upper end of the front wall surface of the return air frame 1021 to the upper rear, and a second flow guiding inclined section 1021c extending from the front wall of the return air frame 1021 to the lower rear; the air return rear cover 1022 includes a third inclined flow guide section 1022a extending from rear to front downward, a fourth inclined flow guide section 1022b extending from the lower end of the third inclined flow guide section 1022a to front downward, a fifth inclined flow guide section 1022c extending from the front end of the fourth inclined flow guide section 1022b to rear downward, and a sixth inclined flow guide section 1022d extending from the lower end of the fifth inclined flow guide section 1022c to rear downward.

Referring to fig. 11, the first oblique flow guiding section 1021a, the third oblique flow guiding section 1022a and the fourth oblique flow guiding section 1022b define a first return air duct (not numbered) located behind the first front return air inlet 102b, and the third oblique flow guiding section 1022a is formed with a second rear opening 102 d. The return air entering from the first front return air inlet 102b enters the cooling space through the first return air duct and the second rear opening 102d, and enters the evaporator 101 from the upper section of the evaporator 101 to exchange heat with the evaporator 101. The second flow guiding inclined section 1021c and the sixth flow guiding inclined section 1022d define a second return air duct (not numbered) located behind the second front return air inlet 102 a. The return air introduced from the second front return air inlet 102a enters the cooling space through the second return air duct, and enters the evaporator 101 from the lower section of the evaporator 101 to exchange heat with the evaporator 101.

As shown in fig. 11, the dashed arrows in fig. 11 schematically represent the return air flow path. The return air enters the cooling space through the upper return air duct and the lower return air duct, so that the return air more uniformly passes through the evaporator 101, and the heat exchange efficiency is improved. The design of the inclined sections of the return air frame 1021 and the design of the inclined sections of the return air rear cover 1022 guide the condensed water condensed on the return air cover 102, thereby facilitating drainage.

As shown in fig. 9, the second rear openings 102d are vertical bars, and the plurality of second rear openings 102d are distributed in the transverse direction in sequence, and disperse the return air so that the return air more uniformly enters the upper section of the evaporator 101.

The sixth guide slope 1022d may be formed with a plurality of third openings (not shown) sequentially distributed in the lateral direction, and the return air passing through the second return air passage is divided by each of the third openings and then introduced into the cooling space, so that the return air is introduced into the lower section of the evaporator 101 more uniformly.

As shown in fig. 11 and fig. 2, the lower surface of the top cover 103 is spaced apart from the upper surface of the evaporator 101, and the front end of the top cover 103 is located behind and above the front end of the evaporator 101, that is, the top cover 103 does not completely shield the upper surface of the evaporator 101, and the front section of the upper surface of the evaporator 101 is not shielded by the top cover 103.

The return air rear cover 1022 further includes a shielding portion (referred to as a first shielding portion 1022e) extending from the third flow guiding inclined section 1022a to the front end of the top cover 103 toward the rear and upward direction, the first shielding portion 1022e is configured to shield a section of the upper surface of the evaporator 101 that is not shielded by the top cover 103, and the first shielding portion 1022e is spaced from the upper surface of the evaporator 101 to form an airflow bypass communicating with the second rear opening 102d, and at least part of the return air entering through the second rear opening 102d can enter the evaporator 101 from above the evaporator 101 through the airflow bypass.

The space between the top cover 103 and the upper surface of the evaporator 101 is filled with a wind-shielding foam, that is, the rear of the airflow bypass is filled with a wind-shielding foam, so that the return air passing through the airflow bypass flows into the evaporator 101. Therefore, even when the front end face of the evaporator 101 is frosted, return air still enters the evaporator 101 to exchange heat with the evaporator 101, the refrigeration effect of the evaporator 101 is guaranteed, the problem that the refrigeration effect of the existing refrigerator 100 is reduced due to the fact that the front end face of the evaporator 101 is frosted is solved, and the refrigeration performance of the refrigerator 100 is improved.

As shown in fig. 9 and 11, the return air frame 1021 further includes a second shielding portion 1021b bent and extended from the first flow guiding inclined section 1021a to the top cover 103, and the second shielding portion 1021b completely shields the first shielding portion 1022e, so as to maintain the beautiful appearance of the return air cover 102.

Further, referring to fig. 11, a joint C between the fourth oblique flow guiding section 1022b and the fifth oblique flow guiding section 1022C is located right below the first oblique flow guiding section 1021a, and the condensed water formed in the air return frame 1021 drops down along the inclined surface of the first oblique flow guiding section 1021a to the joint C between the fourth oblique flow guiding section 1022b and the fifth oblique flow guiding section 1022C right below (i.e., a corner between the fourth oblique flow guiding section 1022b and the fifth oblique flow guiding section 1022C), and then drops down along the inclined surface of the fifth oblique flow guiding section 1022C to the second oblique flow guiding section 1021C, and further flows below the evaporator 101. The evaporator 101 generally has a water receiving area formed with a drain opening below the evaporator to discharge condensed water. Therefore, the condensed water formed on the air return cover 102 is guided and discharged, the water drop sound which can be sensed by human ears is avoided, and the use experience of a user is improved.

The bottom wall of the storage liner 130 may be formed with a water receiving section located below the evaporator 101, a projection of the water receiving section on a vertical plane parallel to the side wall of the storage liner 130 includes a front guiding oblique section 133 located at the front side and extending downward and rearward, a horizontal straight section 134 horizontally extending rearward from the front guiding oblique section 133, and a rear guiding oblique section 135 horizontally extending upward and rearward from the rear end of the horizontal straight section 134, and the horizontal straight section 134 is formed with a water outlet (not shown). The condensed water formed on the return air cover 102 is guided by the inclined sections of the return air frame 1021 and the return air rear cover 1022, flows along the front guide inclined section 133 to the horizontal straight section 134, and is finally discharged through the water outlet. The condensed water on the evaporator 101 flows to the horizontal straight section 134 along the front diversion inclined section 133 and the rear diversion inclined section 135, respectively, and is discharged through the water discharge port.

A drain (not shown) is connected to the drain, through which the condensed water is directed into an evaporation pan of the refrigerator 100, which pan may be generally located in the compressor compartment for evaporating the water therein by means of the heat of a condenser and/or a compressor arranged in the compressor compartment.

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

Claims

1. A refrigerator for dissipating heat using a centrifugal fan includes:

2. The refrigerator of claim 1, wherein

The bottom wall of the box body is also provided with a second bottom opening which is positioned on one side of the first bottom opening in the transverse direction;

3. The refrigerator of claim 2, wherein

The centrifugal fan is arranged at the second bottom opening part in an upward inclined mode from front to back, a fan inlet is formed in the lower surface of the centrifugal fan, and a fan outlet communicated with the space below the bottom wall of the box body is formed in the front end face of the centrifugal fan.

4. The refrigerator of claim 2, further comprising:

5. The refrigerator of claim 4, wherein

The two wind shielding strips are arranged on the lower surface of the bottom wall of the box body at intervals along the transverse direction and are arranged to separate an arrangement space between the first bottom opening and the second bottom opening, the wind shielding strip close to the first bottom opening is arranged to isolate the first bottom opening from the arrangement space, and the wind shielding strip close to the second bottom opening is arranged to isolate the second bottom opening from the arrangement space;

6. The refrigerator of claim 1, further comprising:

7. The refrigerator of claim 6, further comprising:

the return air cover includes:

8. The refrigerator of claim 7, wherein

The air return frame body comprises a first flow guide inclined section and a second flow guide inclined section, wherein the first flow guide inclined section extends from the upper end of the front wall surface of the air return frame body to the rear upper side, and the second flow guide inclined section extends from the position, close to the lower end, of the front wall of the air return frame body to the rear lower side;

9. The refrigerator of claim 8, wherein

The junction of the fourth diversion inclined section and the fifth diversion inclined section is located under the first diversion inclined section, so that condensed water condensed on the air return frame body drips to the junction of the fourth diversion inclined section and the fifth diversion inclined section along the first diversion inclined section, drips to the second diversion inclined section along the fifth diversion inclined section, and further flows to the below of the evaporator.

10. The refrigerator of claim 8, wherein

The lower surface of the top cover and the upper surface of the evaporator are distributed at intervals, and the front end of the top cover is positioned at the rear upper part of the front end of the evaporator, so that the top cover does not completely shield the upper surface of the evaporator;