CN219531317U - Refrigerator with a refrigerator body - Google Patents

Abstract

The utility model provides a refrigerator. The refrigerator comprises a refrigerator body, a door body, a top plate and a base, wherein the side wall of the first refrigerator body is connected between the door body and the back plate, and the evaporator is arranged in the heat exchange cavity; the water receiving disc comprises a first side surface and a second side surface, the first side surface extends along the width direction of the box body between the two first box body side walls, and the second side surface extends along the length direction of the box body between the door body and the backboard; an air duct cavity shell is arranged in the fan cavity to divide the fan cavity into a fan air inlet cavity and a fan air outlet cavity; the refrigerating return air duct comprises a first return air duct outlet connected with the heat exchange cavity, the first return air duct outlet is connected with the first side face and is arranged on one side, close to the base, of the evaporator, and the first return air duct outlet faces the door body to discharge air; the auxiliary air duct outlet of the auxiliary air duct is connected to the second side surface close to the first air return duct outlet, and the auxiliary air duct outlet blows air towards the opposite second side surface; the auxiliary air duct is opened to drive the refrigerating chamber return air blown out from the outlet of the first return air duct to an evaporator far away from the outlet of the auxiliary air duct.

Description

Refrigerator with a refrigerator body

Technical Field

The utility model relates to the technical field of household appliances, in particular to a refrigerator.

Background

With the rapid development of refrigerators, there is a higher demand for energy saving of the refrigerators.

The refrigerator comprises a shell, and further comprises a refrigerating chamber and a freezing chamber which are arranged in the shell, wherein the refrigerating chamber and the freezing chamber are distributed along the height direction of the refrigerator, the refrigerating chamber is arranged at a position close to the top plate, and the freezing chamber is arranged at a position close to the base. Generally, the temperature of the refrigerating chamber is 0 degrees or more for refrigerating food or beverage, and the temperature of the freezing chamber is 0 degrees or less for freezing food or beverage.

When the refrigerator is a single refrigerating system refrigerator, only one evaporator is provided, and the freezing chamber and the refrigerating chamber supply air through the freezing chamber air channel and the refrigerating chamber air channel respectively. Generally, the refrigerating chamber air duct is respectively a refrigerating air return duct and a refrigerating air delivery duct, and the return air flowing out of the refrigerating chamber is communicated with the heat exchange space where the evaporator is located through the refrigerating air return duct, wherein the refrigerating air return duct comprises a first air return duct inlet and a first air return duct outlet.

In the prior art, because the air in the refrigerating chamber contains higher water vapor, the water vapor in the return air of the refrigerating chamber flowing out from the outlet of the first return air duct is condensed into frost at the position close to the outlet of the first return air duct when meeting with a colder evaporator, a great amount of frost is condensed at the position close to the outlet of the first return air duct,

under normal conditions, the return air blown out from the outlet of the first return air duct passes through the evaporator close to the outlet of the first return air duct, and is blown out into the refrigerating air delivery duct after being reduced in temperature, and as the air flow flowing out from the outlet of the first return air duct always flows according to the same flow path, most of the return air in the refrigerating chamber exchanges heat with the part of the evaporator condensed with a large amount of frost, when the air supply in the refrigerating chamber has a certain problem, the normal use of the refrigerating chamber is affected.

Disclosure of Invention

The present utility model solves at least one of the technical problems in the related art to a certain extent.

Therefore, the utility model aims to provide the refrigerator, by arranging the auxiliary air duct and enabling the wind direction of the outlet of the auxiliary air duct to flow towards the second side surface of the water receiving disc opposite to the water receiving disc, the change of the flow path of the wind blown out from the outlet of the first air return duct by the wind of the auxiliary air duct is realized, so that the return air of the refrigerating chamber is blown towards the position of the evaporator far away from the outlet of the first air return duct, the return air of the refrigerating chamber can exchange heat with the position of the evaporator which is not blocked by frost, and the air supply of the refrigerating chamber is kept normal.

The refrigerator according to the present utility model includes:

the box body is internally provided with a storage space which is provided with a storage opening; the box body comprises a backboard opposite to the storage opening;

the door body is connected with the box body;

the top plate and the base are respectively arranged at the top and the bottom of the box body;

the first box body side walls are connected between the door body and the backboard and are provided with two, the two first box body side walls are oppositely arranged, and one first box body side wall is connected with the door body in a rotating way;

the freezing chamber and the refrigerating chamber are arranged in the storage space;

the heat exchange cavity is arranged in the storage space;

the evaporator is arranged in the heat exchange cavity;

the water receiving disc is arranged on one side, close to the base, of the evaporator and comprises a first side face and a second side face, the first side face extends along the width direction of the box body between the two first box body side walls, and the second side face extends along the length direction of the box body between the door body and the back plate;

the fan cavity is arranged in the storage space, an air channel cavity shell is arranged in the fan cavity to divide the fan cavity into a fan air inlet cavity and a fan air outlet cavity, and a fan mounting hole is formed in the air channel cavity shell;

the fan is arranged at the fan mounting hole;

a refrigerating return air duct which is communicated with the refrigerating chamber and the heat exchange cavity;

the auxiliary air duct is communicated with the fan air inlet cavity and the heat exchange cavity;

the refrigerating return air duct comprises a first return air duct outlet connected with the heat exchange cavity, the first return air duct outlet is connected with the first side face and is arranged on one side, close to the base, of the evaporator, and the first return air duct outlet faces the door body to discharge air;

the auxiliary air channel is provided with an auxiliary air channel outlet communicated with the heat exchange cavity, the auxiliary air channel outlet is connected to a second side surface close to the first air return channel outlet, an auxiliary air channel opening is formed in one side of the evaporator close to the base, and the auxiliary air channel outlet blows air towards the opposite second side surface;

the auxiliary air duct is opened to drive the refrigerating chamber return air blown out from the outlet of the first return air duct to an evaporator position far away from the outlet of the auxiliary air duct.

In some embodiments of the utility model, the refrigerator further comprises a condenser, a compressor, a throttling device and a refrigerant pipe, wherein the evaporator is connected with the compressor and the condenser through the refrigerant pipe;

the refrigerator comprises a wind pressure sensor, wherein the wind pressure sensor is arranged on a refrigerant pipe which is positioned in the heat exchange cavity and is not covered by the evaporator, so as to measure the wind pressure of the air inlet cavity of the fan.

In some embodiments of the present utility model, the refrigerant pipe is at least partially located between the fan inlet and the evaporator, and the wind pressure sensor is connected to the refrigerant pipe located between the fan inlet and the evaporator.

In some embodiments of the present utility model, the wind pressure sensor comprises a first wind pressure sensor, the refrigerator further comprises a controller, and the controller is connected with the first wind pressure sensor;

the auxiliary air duct comprises an auxiliary air duct inlet communicated with the air outlet cavity of the fan;

the refrigerator also comprises an electric auxiliary air duct valve, wherein the electric auxiliary air duct valve is communicated with an auxiliary air duct inlet, and the controller is connected with the electric auxiliary air duct valve.

In some embodiments of the utility model, the wind pressure sensor further comprises a second wind pressure sensor connected to the controller; the second wind pressure sensor is connected to a refrigerant pipe between the evaporator and the air inlet cavity of the fan and is arranged at intervals with the first wind pressure sensor, wherein the first wind pressure sensor is arranged close to the outlet of the first air return duct, and the second wind pressure sensor is arranged far away from the outlet of the second air return duct.

In some embodiments of the utility model, the refrigerator further comprises a defrosting device connected to the controller, the defrosting device comprising a heating wire that releases heat to a frosting place on the evaporator when the defrosting device is turned on.

In some embodiments of the present utility model, a refrigerator temperature sensor is provided in the refrigerator, and is connected to the controller, and detects and uploads the temperature Tx of the refrigerator to the controller.

In some embodiments of the utility model, the refrigeration delivery duct includes a first delivery duct inlet and a first delivery duct outlet, the refrigeration delivery duct extending in an up-down direction;

the first air delivery duct inlet is positioned in the fan air outlet cavity and communicated with the fan air outlet cavity, and the first air delivery duct inlet is positioned at the lower end part of the refrigeration air delivery duct;

the first air delivery duct outlet is positioned at the upper end part of the air outlet cavity of the fan, and is communicated with the refrigerating chamber, and the first air delivery duct outlet is positioned at the upper end part of the refrigerating air delivery duct.

In some embodiments of the utility model, the fan air inlet cavity and the fan air outlet cavity are both arranged above the heat exchange cavity, the air duct cavity shell is provided with a fan mounting hole, and the fan rotates to form low pressure in the fan air inlet cavity so that air flow in the heat exchange cavity flows upwards into the fan air inlet cavity;

the water collector is located the heat transfer intracavity, and the refrigerator still includes the drain pipe, and the drain pipe is connected in the bottom of water collector.

In some embodiments of the utility model, the refrigerator further comprises a freezing chamber air duct, wherein the freezing chamber air duct is communicated with the fan air outlet cavity through the freezing chamber air duct, and the freezing chamber air duct comprises a freezing air return duct and a freezing air delivery duct;

one side of the air channel cavity shell, which is close to the door body, is sequentially connected with an air channel baffle plate and an air channel cover plate, and the freezing return air channel and the freezing delivery air channel are defined by the air channel cover plate and the air channel baffle plate and are communicated with the freezing chamber.

The utility model has at least the following positive effects:

the utility model provides a refrigerator. The refrigerator comprises a refrigerator body, a door body, a top plate and a base, wherein the side wall of the first refrigerator body is connected between the door body and the back plate, and the evaporator is arranged in the heat exchange cavity; the water receiving disc comprises a first side surface and a second side surface, the first side surface extends along the width direction of the box body between the two first box body side walls, and the second side surface extends along the length direction of the box body between the door body and the backboard; an air duct cavity shell is arranged in the fan cavity to divide the fan cavity into a fan air inlet cavity and a fan air outlet cavity; the refrigerating return air duct comprises a first return air duct outlet connected with the heat exchange cavity, the first return air duct outlet is connected with the first side face and is arranged on one side, close to the base, of the evaporator, and the first return air duct outlet faces the door body to discharge air; the auxiliary air duct outlet of the auxiliary air duct is connected to the second side surface close to the first air return duct outlet, and the auxiliary air duct outlet blows air towards the opposite second side surface; the auxiliary air duct is opened to drive the return air of the refrigerating chamber blown out from the outlet of the first return air duct to the evaporator far away from the outlet of the auxiliary air duct, so that the return air of the refrigerating chamber is guided to the outlet far away from the outlet of the first return air duct, and the return air of the refrigerating chamber exchanges heat with the evaporator without frost blockage, thereby ensuring the air quantity and the cold quantity of the air supply of the refrigerating chamber.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a view of an external appearance of a refrigerator according to an embodiment of the present utility model;

fig. 2 is a view of a refrigerator according to an embodiment of the present utility model with a cabinet, a top plate, a door, and a base removed;

FIG. 3 is a rear view of FIG. 2;

FIG. 4 is a right side view of FIG. 3;

fig. 5 is an enlarged view a in fig. 4;

fig. 6 is a mating view of a refrigeration return air duct, a water tray, an evaporator, an air duct chamber housing and a blower of a refrigerator according to an embodiment of the present utility model;

fig. 7 is a mating view of a water tray, evaporator, air duct chamber housing and blower of a refrigerator according to an embodiment of the utility model;

FIG. 8 is a rear view of FIG. 3;

FIG. 9 is a B-B cross-sectional view of FIG. 8;

fig. 10 is an enlarged view C in fig. 8;

fig. 11 is a control flow chart of controlling an electric auxiliary duct valve of a refrigerator according to an embodiment of the present utility model;

fig. 12 is a control general flowchart for controlling an electric auxiliary air duct valve and a defrosting apparatus of a refrigerator according to an embodiment of the present utility model;

fig. 13 is a schematic view illustrating cooperation of the refrigerating return duct of the refrigerator and the inner container of the freezing chamber according to an embodiment of the present utility model;

FIG. 14 is a schematic view showing the cooperation of components such as a refrigerating return air duct, an auxiliary air duct, an air duct cover plate, an air duct partition plate, and an air duct cavity shell of a refrigerator according to an embodiment of the present utility model;

FIG. 15 is a schematic view of the assembly of FIG. 14 with the duct cover removed;

FIG. 16 is a schematic view of FIG. 14 with the duct cover and duct spacer removed;

FIG. 17 is a schematic view of FIG. 14 at another angle with the duct cover and duct spacer removed;

FIG. 18 is a rear view of FIG. 17;

fig. 19 is a refrigerating return air duct of a refrigerator according to an embodiment of the present utility model;

FIG. 20 is a top view of FIG. 13;

FIG. 21 is a D-D sectional view of FIG. 20;

in the above figures: 100. a refrigerator; 11. a case; 111. a storage space; 112. a storage port; 113. a first case side wall; 12. a door body; 13. a top plate; 14. a base; 15. an inner container; 16. a back plate; 21. a freezing chamber; 22. a refrigerating chamber; 31. a heat exchange cavity; 32. a fan cavity; 321. an air inlet cavity of the fan; 322. an air outlet cavity of the fan; 323. an air duct cavity shell; 3231. a fan mounting hole; 33. an air duct partition; 34. an air duct cover plate; 41. an evaporator; 42. a water receiving tray; 421. a first side; 422. a second side; 43. a drain pipe; 51. refrigerating the air return duct; 511. a first return air duct inlet; 512. a first return air duct outlet; 52. refrigerating and delivering air duct; 521. a first air delivery duct inlet; 522. an outlet of the first air delivery duct; 6. a blower; 7. an auxiliary air duct; 71. an auxiliary air duct inlet; 72. an auxiliary air duct outlet; 81. a refrigerant pipe; 82. a defrosting device; 91. a first wind pressure sensor; 92. a second wind pressure sensor; 93. an electric auxiliary air duct valve.

Detailed Description

The present utility model will be specifically described below by way of exemplary embodiments. It is to be understood that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present utility model, it should be understood that the orientations or positional relationships indicated by the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" or the like may include one or more such features, either explicitly or implicitly.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Hereinafter, embodiments of the present utility model will be described in detail with reference to fig. 1 to 21.

The width direction of the refrigerator 100 between the two first cabinet side walls 113 is defined as a first direction, which is a left-right direction, and when the user uses the refrigerator 100 and the base 14 of the refrigerator 100 contacts the ground, the directions perceived by the user are left and right sides of the refrigerator 100.

Defining the length direction of the refrigerator 100 between the door body 12 and the back plate 16 as a second direction, the second direction being a front-rear direction, the direction of the door body 12 of the refrigerator 100 being a front side of the refrigerator 100, the direction of the back plate 16 of the refrigerator 100 being a rear side of the refrigerator 100;

the height direction of the refrigerator 100 between the top plate 13 and the base 14 is defined as a third direction, the third direction is an up-down direction, the direction in which the top plate 13 of the refrigerator 100 is located is an upper side, and the direction in which the base 14 of the refrigerator 100 is located is a lower side of the refrigerator 100.

The refrigerator 100 includes a case 11, the case 11 being located at the outermost side of the refrigerator 100, a storage space 111 being formed in the case 11, a storage opening 112 being provided in the storage space 111, and a user taking out articles in the storage space 111 or putting the articles into the storage space 111 through the storage opening 112.

The case 11 further includes a back plate 16 disposed opposite the storage port 112.

The refrigerator 100 further includes a door body 12, the door body 12 is rotatably connected with the case 11, the back plate 16 is disposed opposite to the door body 12, and the door body 12 is connected to the storage opening 112. The user rotates the door 12 to open or close the storage opening 112.

The refrigerator 100 further includes a top plate 13 and a base 14, the top plate 13 being provided at the top of the cabinet 11 for enhancing a supporting strength of the top of the cabinet 11, the base 14 being provided at the bottom of the cabinet 11 for supporting components inside the refrigerator 100 and the cabinet 11 of the refrigerator 100,

the cabinet of the refrigerator 100 further includes a first cabinet side wall 113 connected between the door 12 and the back plate 16 and extending in the up-down direction, the first cabinet side wall 113 further connected between the top plate 13 and the base 14, the first cabinet side wall 113 having two. Two first case side walls 113 are oppositely disposed, one of the first case side walls 113 is rotatably connected to the door body 12, and the other first case side wall 113 is not connected to the door body 12. In some embodiments, the first case side wall 113 includes a first case 11 left side wall and a first case 11 right side wall, and the first case 11 left side wall or the first case 11 right side wall is connected with the door 12.

The storage space 111 has a temperature control region inside, and a single refrigerator 100 may have one or more temperature control regions inside, each of which maintains a different temperature interval. The temperature control areas of the refrigerator 100 of the present utility model are a freezing chamber 21 and a refrigerating chamber 22, the freezing chamber 21 and the refrigerating chamber 22 are both arranged in a storage space 111, the refrigerating chamber 22 and the freezing chamber 21 are arranged in the vertical direction, the temperature of the freezing chamber 21 is generally lower than or equal to 0 ℃, the temperature of the refrigerating chamber 22 is generally higher than 0 ℃, the freezing chamber 21 is used for freezing objects such as liquid or meat which need the freezing chamber 21, the refrigerating chamber 22 is used for placing objects such as vegetables and fruits which need to be refrigerated, and the freezing chamber 21 and the refrigerating chamber 22 are separately arranged to be favorable for users to store the objects which need different low temperatures.

In some embodiments, the refrigerating chamber 22 is provided at a side of the freezing chamber 21 near the top plate 13 such that the refrigerating chamber 22 is higher than the freezing chamber 21, and a user can conveniently stand to take out or put in the articles into the refrigerating chamber 22 when opening the door of the refrigerator 100. The refrigerator compartment 22 and the freezer compartment 21 are provided with a plurality of shelves, the freezer compartment 21 is provided with a drawer, a user can store and fetch articles in the drawer by pulling the drawer, the user does not need to bend down or squat down to see the condition of storing articles in the freezer compartment 21 with lower height, the articles can be conveniently stored in the freezer compartment 21 by the user, meanwhile, the articles in the freezer compartment 21 are stored more independently, and the possibility of odor tainting between the articles in the drawer and other articles in the storage space 111 is reduced.

The rear side of the freezing chamber 21 is provided with an air duct cover plate 34, the air duct cover plate 34 extends in the up-down direction, the rear side of the air duct cover plate 34 is provided with an air duct partition plate 33, and the rear side of the air duct partition plate 33 is connected with an air duct cavity shell 323.

The refrigerator 100 further includes a liner 15, and the freezing chamber 21 and the refrigerating chamber 22 are provided inside the liner 15. The inner container 15 is correspondingly formed with an air duct accommodating space at the rear side of the freezing chamber 21, and an air duct cover 34 is correspondingly disposed at the front side of the air duct accommodating space, and an air duct partition 33 and an air duct chamber housing 323 are sequentially disposed in the air duct accommodating space.

The heat exchange cavity 31 is formed between the air duct cavity housing 323 and the inner container 15, the refrigerator 100 further comprises an evaporator 41, the evaporator 41 is arranged in the heat exchange cavity 31, and the evaporator 41 releases cold energy into air flowing in the heat exchange cavity 31 so as to reduce the temperature of the air flowing in the heat exchange cavity 31.

The refrigerator 100 includes a water receiving tray 42, the water receiving tray 42 is disposed right below the evaporator 41 and is used for receiving condensed water flowing out of the surface of the evaporator 41, a drain pipe 43 is disposed below the water receiving tray 42, and the condensed water is discharged from the drain pipe 43 to the water receiving tray 42. The water pan 42 includes a first side 421 and a second side 422, the first side 421 has two, the second side 422 has two, and the first side 421 and the second side 422 are connected. The first side 421 extends in the width direction of the case 11 between the two first case side walls 113, that is, the first side 421 extends in the left-right direction; the second side 422 extends along the length of the case 11 between the door 12 and the back plate 16, i.e., the second side 422 extends in the front-rear direction.

A fan air inlet cavity 321 is formed between the air channel cavity shell 323 and the liner 15, a fan air supply cavity is formed between the air channel cavity shell 323 and the air channel partition plate 33, the air channel air inlet cavity and the air channel air supply cavity are separated by the air channel cavity shell 323, and a fan mounting hole 3231 is formed in the air channel cavity shell 323.

The refrigerator 100 further includes a blower installed at the blower installation hole 3231, and the blower rotates to form a low pressure in the blower inlet chamber 321, so that air flows are all sucked into the blower inlet chamber 321. The fan air inlet cavity 321 is located above the heat exchange cavity 31, and the fan air inlet cavity 321 is communicated with the heat exchange cavity 31, and the fan rotates to form low pressure in the heat exchange cavity 31 and the fan air inlet cavity 321, so that air flow is sucked into the heat exchange cavity 31.

The refrigerating chamber 22 and the heat exchange chamber 31 are communicated through a refrigerating air duct, the refrigerating air duct comprises a refrigerating air return duct 51 and a refrigerating air delivery duct 52, air in the refrigerating chamber 22 enters the heat exchange chamber 31 from the refrigerating air return duct 51, and after heat exchange with the evaporator 41 in the heat exchange chamber 31, the temperature is reduced, and cold air flow after the temperature reduction is sent into the refrigerating chamber 22 from the refrigerating air delivery duct 52 so as to form circulation. The blower provides a driving force in the air flow circulation of the refrigerating compartment 22.

Wherein, the refrigerating return air duct 51 is connected between the refrigerating chamber 22 and the heat exchange chamber 31, and the refrigerating return air duct 51 extends in the up-down direction. Since the freezing chamber 21 is located below the refrigerating chamber 22, the heat exchange chamber 31 is located right behind the freezing chamber 21, and the refrigerating return air duct 51 extends in the up-down direction, so that the air flow in the upper refrigerating chamber 22 can be guided into the heat exchange chamber 31 behind the freezing chamber 21.

The refrigerator 100 further comprises an auxiliary air duct 7, one end of the auxiliary air duct 7 is connected with the fan air supply cavity, the other end of the auxiliary air duct is connected with the heat exchange cavity 31, and air flow in the fan air supply cavity can be sent into the heat exchange cavity 31.

Specifically, the refrigeration return air duct 51 includes a first return air duct inlet and a first return air duct outlet 512, wherein the first return air duct inlet is located at an upper end of the refrigeration return air duct 51 and is communicated with the refrigeration chamber 22, so that air in the refrigeration chamber 22 can enter the interior of the refrigeration return air duct 51 through the first return air duct inlet, and the first return air duct outlet 512 is located at a lower end of the refrigeration return air duct 51 and is communicated with the heat exchange cavity 31, so that air flow in the refrigeration return air duct 51 can flow into the interior of the heat exchange cavity 31 through the refrigeration return air duct 51.

The water pan 42 is disposed in the heat exchange cavity 31, the first return air duct outlet 512 blows air toward the front door 12 and is connected to the first side 421 of the water pan 42 extending in the left-right direction, so that the return air of the refrigerating chamber 22 blows air toward the heat exchange cavity 31, the first return air duct outlet 512 is connected to the water pan 42 at a position at the bottom of the evaporator 41, the return air blown from the first return air duct outlet 512 flows to the bottom of the evaporator 41, flows toward the upper evaporator 41 under the entrainment of the fan, and most of the return air contacts a part of the evaporator 41 located above the opposite position of the first return air duct outlet 512 and exchanges heat with the part of the evaporator 41.

The refrigeration return air duct 51 comprises a first return air duct outlet 512 connected with the heat exchange cavity 31, the first return air duct outlet 512 is connected with the first side 421 and is arranged on one side of the evaporator 41 close to the base 14, and the first return air duct outlet 512 is used for exhausting air towards the door body 12;

the auxiliary air duct 7 is provided with an auxiliary air duct outlet 72 communicated with the heat exchange cavity 31, the opening of the auxiliary air duct 7 is connected to the second side 422 close to the first air return duct outlet 512, the opening of the auxiliary air duct 7 is arranged on one side of the evaporator 41 close to the base 14, and the auxiliary air duct outlet 72 blows air towards the opposite second side 422;

the auxiliary duct 7 is opened to drive the return air of the refrigerating compartment 22 blown out from the first return air duct outlet 512 to a position of the evaporator 41 remote from the auxiliary duct outlet 72.

Specifically, the auxiliary air duct 7 communicates with the fan air outlet chamber 322 and the heat exchange chamber 31. The auxiliary air duct 7 comprises an auxiliary air duct outlet 72 and an auxiliary air duct 7 inlet, and the auxiliary air duct 7 inlet is positioned at the upper end part of the auxiliary air duct 7 and is communicated with the fan air outlet cavity 322 so that air flow in the fan air outlet cavity 322 can enter the auxiliary air duct 7; the auxiliary air duct outlet 72 is located at the lower end of the auxiliary air duct 7 and is connected with the water receiving disc 42 in the heat exchange cavity 31, and the air outlet of the auxiliary air duct 7 is connected to the second side 422 of the water receiving disc 42, which is close to the first air return duct outlet 512, so that the air in the auxiliary air duct 7 is blown out from the auxiliary air duct outlet 72, and the auxiliary air duct outlet 72 is also located at the bottom of the evaporator 41, and the auxiliary air duct 7 is opened towards the center of the water receiving disc 42, so that the air blown out by the air outlet of the auxiliary air duct 7 flows in the left-right direction at the bottom of the evaporator 41.

Since the cool air blown out from the first return air duct outlet 512 also flows forward at the bottom of the evaporator 41, at this time, the flow path of the air blown out from the auxiliary air duct 7 intersects with the flow path of the air blown out from the first return air duct outlet 512, the air blown out from the auxiliary air duct 7 blows the air direction blown out from the first return air duct outlet 512 away from one side of the auxiliary air duct 7, so that the return air of the refrigerating chamber 22 is blown to the bottom of the evaporator 41 away from the first return air duct outlet 512 instead of flowing along the original path, and flows upward from the bottom of the evaporator 41 to exchange heat with the evaporator 41 under the entrainment action of the fan, thereby frosting the moist cool air chamber 22 return air at the evaporator 41 away from the first return air duct outlet 512 instead of frosting at the evaporator 41 at the first return air duct outlet 512.

When frost formation is severe in the portion of the original flow path of the return air from the refrigerating compartment 22 contacting the evaporator 41 in the heat exchange chamber 31, the auxiliary air duct 7 is opened to blow the return air from the refrigerating compartment 22 to a position away from the first return air duct outlet 512.

In the prior art, because the air in the refrigerating chamber 22 contains higher water vapor, the water vapor in the return air of the refrigerating chamber 22 flowing out from the first return air duct outlet 512 condenses into frost near the first return air duct outlet 512 when encountering colder evaporator 41, which causes a great amount of frost to condense near the first return air duct outlet 512, normally, the return air blown out from the first return air duct outlet 512 passes through the evaporator 41 near the first return air duct outlet 512 and is blown out into the refrigerating air supply duct 52 after the temperature is reduced, and because the air flow flowing out from the first return air duct outlet 512 always flows along the same flow path, most of the return air of the refrigerating chamber 22 exchanges heat with the evaporator 41 condensed with a great amount of frost, so that a certain problem exists in the air supply of the refrigerating chamber 22, which affects the normal use of the refrigerating chamber 22.

Compared with the prior art, the evaporator 41 in the refrigerator 100 also frosts at the position close to the first air return duct outlet 512, when frosting reaches a certain degree, the auxiliary air duct 7 of the refrigerator 100 is opened, so that the air in the auxiliary air duct 7 is blown out towards the second side 422 far away from the first air return duct outlet 512, and as the air blown out by the auxiliary air duct 7 and the air blown out by the first air return duct outlet 512 are intersected, the air blown out by the auxiliary air duct 7 can drive the return air of the refrigerating chamber 22 to flow towards the position far away from the evaporator 41 at the first air return duct outlet 512, so that the frosting position of the evaporator 41 is transferred, the return air of the refrigerating chamber 22 can be subjected to heat exchange at the position where the evaporator 41 does not frost, the heat exchange efficiency of the evaporator 41 is enhanced, the normal use of the refrigerating chamber 22 is not influenced, and the temperature of the refrigerating chamber 22 is ensured.

In some embodiments of the present utility model, the refrigerator 100 includes a wind pressure sensor, the refrigerator 100 further includes a condenser, a compressor, and a throttling device, and the evaporator 41 is connected to the compressor and the condenser through a refrigerant pipe 81; the wind pressure sensor is arranged on a refrigerant pipe 81 which is positioned in the heat exchange cavity 31 and is not covered by the evaporator 41, so as to measure the wind pressure of the fan air inlet cavity 321.

Specifically, the refrigerator 100 includes a compressor, a condenser, an expansion valve, and an evaporator 41, and a refrigeration cycle is performed through the compressor, the condenser, the expansion valve, and the evaporator 41. The refrigerating cycle includes a compression process, a condensation process, an expansion process, and an evaporation process, and provides cold or heat to the indoor space through heat absorption and release processes of the refrigerant, thereby achieving temperature adjustment of the storage space 111. The compressor compresses the refrigerant gas into a high-temperature and high-pressure state and discharges the compressed refrigerant gas, and the discharged refrigerant gas flows into the condenser. The condenser condenses the compressed high-temperature and high-pressure gaseous refrigerant into a liquid refrigerant, and heat is released to the surrounding environment through the condensation process. The liquid refrigerant flowing out of the condenser enters an expansion valve, and the expansion valve expands the liquid refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid refrigerant. The low-pressure liquid refrigerant flowing out of the expansion valve enters the evaporator 41, and when the liquid refrigerant flows through the evaporator 41, the absorbed heat evaporates into a low-temperature low-pressure refrigerant gas, and the refrigerant gas in a low-temperature low-pressure state is returned to the compressor. The evaporator 41 may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. Throughout the cycle, the refrigerator 100 may adjust the temperature of the storage space 111.

It should be noted that, in the present utility model, the refrigerant pipe 81 is at least partially located between the fan inlet 321 and the evaporator 41, and the wind pressure sensor is connected to the refrigerant pipe 81 located between the fan inlet 321 and the evaporator 41, so that the wind pressure sensor can not be blocked by the evaporator 41 and can accurately reflect the wind resistance inside the fan inlet 321.

In some embodiments of the present utility model, the wind pressure sensor includes a first wind pressure sensor 91, and the refrigerator 100 further includes a controller connected to the first wind pressure sensor 91;

the refrigerator 100 further includes an electric auxiliary air duct valve 93, and the controller is connected to the electric auxiliary air duct valve 93.

Specifically, the preset pressure value P1 is in the controller, the first wind pressure sensor 91 transmits the detected wind pressure value Px to the controller, and the controller compares the magnitude relation between the wind pressure value Px and the preset pressure value P1.

When Px is greater than or equal to P1, the controller determines that the wind pressure values of the fan air inlet chamber 321 and the heat exchange chamber 31 are in a normal state, and because the original flow path of the return air of the refrigerating chamber 22 is not severely blocked due to the frost formation of the evaporator 41, the return air of the refrigerating chamber 22 can obtain enough cold energy released by the evaporator 41 along the original flow path, and the auxiliary air duct 7 does not need to be opened, and at the moment, the controller controls the air door of the electric control auxiliary air duct 7 to be closed, and the auxiliary air duct 7 to be closed.

When Px < P1, the control determines that the wind pressure values of the fan air inlet 321 and the heat exchange chamber 31 are in a low state, and the return air of the refrigerating chamber 22 flows along the original flow path, so that the evaporator 41 cannot perform sufficient heat exchange with the evaporator 41, at this time, a part of the return air of the refrigerating chamber 22 in the original flow path is already in a frost blocking state, the auxiliary air duct 7 needs to be opened to enable the return air of the refrigerating chamber 22 to perform heat exchange with the evaporator 41 without frost blocking along the new flow path, at this time, the controller controls the valve of the electric control auxiliary air duct 7 to be opened, so that the wind in the air duct of the auxiliary air duct 7 blows into the water receiving disc 42, and the wind direction of the outlet 512 of the first return air duct is blown away from the outlet 512 of the first return air duct, so that heat exchange is performed between the return air of the refrigerating chamber 22 and the evaporator 41 without frost blocking.

In some embodiments of the present utility model, the wind pressure sensor further includes a second wind pressure sensor 92, wherein the second wind pressure sensor 92 is connected to the refrigerant pipe 81 between the evaporator 41 and the fan inlet 321 and is spaced apart from the first wind pressure sensor 91, and the first wind pressure sensor 91 is disposed near the first return air duct outlet 512, and the second wind pressure sensor 92 is disposed far from the second return air duct outlet.

The second wind pressure sensor 92 is connected to the controller, and the refrigerator 100 further includes a defrosting device 82, and the defrosting device 82 is connected to the controller.

It should be noted that, the preset pressure value P2 is in the controller, the second wind pressure sensor 92 detects the wind pressure Py and uploads the wind pressure Py to the controller, and the controller determines the magnitude relationship between the wind pressure detection value Py and the preset pressure value P2.

The preset temperature value T2 is in the controller, and the defrosting operation time value T for opening the refrigerator 100 is in the controller. When the temperature Tx of the refrigerating chamber 22 detected by the refrigerator 100 is less than T2:

when the time t0 of the refrigeration operation of the refrigerator 100 is equal to or longer than the on defrosting operation time t, the refrigeration time of the refrigerator 100 is already longer than the set operation time for defrosting, and defrosting of the refrigerator 100 is needed, and at this time, the evaporator 41 is already frosted in a large area, the controller controls the compressor, the fan and the electric auxiliary air duct valve 93 to be closed, and then controls the defrosting device 82 to start to operate, so that the heating wire of the defrosting device 82 starts to generate heat, and the heating wire emits heat to melt the frost on the surface of the evaporator 41, so that the frost blockage of the evaporator 41 can be relieved, and the evaporator 41 can maintain a good heat exchange effect.

When the cooling operation time t0 of the refrigerator 100 is less than the on defrosting operation time t and the pressure detection value Py of the second wind pressure sensor 92 is less than P2, the controller determines that the wind pressure in the air supply chamber of the fan is already in a relatively low state although the cooling operation time of the refrigerator 100 is less than the prescribed time, the evaporator 41 of the refrigerator 100 is already full of frost, and a certain influence is caused on the air supply of the refrigerating chamber 22, and the controller controls the defrosting device 82 to be turned on so that the heating wire of the defrosting device 82 starts to generate heat, and the heat generated by the heating wire can be absorbed by the frost on the evaporator 41 to melt the frost into water, so that the heat exchange efficiency of the evaporator 41 is kept at a high level.

When the refrigerating operation time t0 of the refrigerator 100 is less than the on defrosting operation time t and the pressure detection value Py of the second wind pressure sensor 92 is more than or equal to P2, the controller judges that the refrigerating operation time of the refrigerator 100 is less than the defrosting regulation time and the pressure in the air supply cavity of the fan is larger, at the moment, the evaporator 41 may not be frosted or a small amount of frost is formed, the controller controls the defrosting device 82 to be closed, and the defrosting device 82 is not required to be started to defrost, so that the return air of the refrigerating chamber 22 can meet the requirements,

In some embodiments of the present utility model, the preset refrigeration temperature value T1 of the preset refrigeration chamber 22 is in the controller, the refrigeration chamber 22 is provided with a refrigeration chamber 22 temperature sensor, the refrigeration chamber 22 temperature sensor is connected with the controller, the refrigeration chamber 22 temperature sensor detects the temperature Tx of the refrigeration chamber 22 and uploads the detected temperature Tx to the controller, and the controller determines the magnitude relation of the preset refrigeration temperature value T1 of the temperature Tx of the refrigeration chamber 22.

If Tx is greater than or equal to T1, the temperature of the refrigerating chamber 22 is higher at this time, the compressor and the fan are required to be started for cooling, the controller is connected with the compressor and the fan, and the controller controls the compressor and the fan to start.

The first wind pressure sensor 91 detects the wind pressure Px of the fan air inlet 321, and the controller determines whether to open the auxiliary air door according to the magnitude relation between the wind pressure Px and the preset value P1.

Meanwhile, whether the auxiliary air door is opened or not, the controller continuously judges whether to open the compressor, the fan, the clamping door of the electric control auxiliary air duct 7 and the defrosting device 82 according to the relation between the temperature value of the refrigerating chamber 22 and the preset value T2, the relation between the refrigerating operation time T0 of the refrigerator 100 and the opening defrosting operation time T and the relation between the pressure detection value Py and the pressure preset value P2 in the operation process of the refrigerator 100.

In some embodiments of the present utility model, the refrigeration stack 52 includes a first stack inlet 521 and a first stack outlet 522, and the refrigeration stack 52 extends in an up-down direction. Wherein, the first air delivery duct inlet 521 is located in the fan air outlet cavity 322, and the first air delivery duct inlet 521 is communicated with the fan air outlet cavity, and the first air delivery duct inlet 521 is located at the lower end of the refrigeration air delivery duct 52; the first air delivery duct outlet 522 is located at an upper end portion of the fan air outlet cavity 322, and the first air delivery duct outlet 522 is communicated with the refrigerating chamber 22, and the first air delivery duct outlet 522 is located at an upper end portion of the refrigerating air delivery duct 52. Since the refrigerating chamber 22 is located at the upper part of the freezing chamber 21 in the present utility model, the air flow in the air supply chamber of the fan can enter the refrigerating air supply duct 52 through the first air supply duct inlet 521 and then enter the refrigerating chamber 22 located above the freezing chamber 21 through the first air supply duct outlet 522.

In some embodiments of the present utility model, the fan air inlet cavity 321 and the fan air supply cavity are both arranged above the heat exchange cavity 31, the fan housing 32 is provided with a fan mounting hole 3231, and the fan rotates to form low pressure in the fan air inlet cavity 321, so that the air flow in the heat exchange cavity 31 flows upwards into the fan air inlet cavity 321, and enters the fan air supply cavity through the fan mounting hole 3231.

The refrigerating air delivery duct 52 and the auxiliary air duct 7 are communicated with a fan air supply cavity, and air flow in the fan air supply cavity flows out through the fan air supply cavity.

In some embodiments of the present utility model, the freezing chamber 21 and the fan air supply chamber are communicated through a freezing chamber 21 air channel, the freezing chamber 21 air channel comprises a freezing air return channel and a freezing air supply channel, the freezing air return channel and the freezing air supply channel are defined by an air channel cover plate 34 and an air channel partition plate 33, and the freezing air return channel and the freezing air supply channel are both communicated with the freezing chamber 21.

The foregoing is merely illustrative embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present utility model, and the utility model should be covered. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A refrigerator, comprising:

the box body is internally provided with a storage space, and the storage space is provided with a storage opening; the box body comprises a back plate opposite to the storage opening;

the door body is connected with the box body;

the top plate and the base are respectively arranged at the top and the bottom of the box body;

the first box side walls are connected between the door body and the backboard and are provided with two, the two first box side walls are oppositely arranged, and one of the first box side walls is rotationally connected with the door body;

the freezing chamber and the refrigerating chamber are arranged in the storage space;

the heat exchange cavity is arranged in the storage space;

the evaporator is arranged in the heat exchange cavity;

the water receiving disc is arranged on one side, close to the base, of the evaporator, and comprises a first side face and a second side face, wherein the first side face extends along the width direction of the box body between the two first box body side walls, and the second side face extends along the length direction of the box body between the door body and the backboard;

the fan cavity is arranged in the storage space, an air channel cavity shell is arranged in the fan cavity to divide the fan cavity into a fan air inlet cavity and a fan air outlet cavity, and a fan mounting hole is formed in the air channel cavity shell;

the fan is arranged at the fan mounting hole;

a refrigerating return air duct which is communicated with the refrigerating chamber and the heat exchange cavity;

the auxiliary air duct is communicated with the fan air inlet cavity and the heat exchange cavity;

the refrigerating return air duct comprises a first return air duct outlet connected with the heat exchange cavity, the first return air duct outlet is connected with the first side face and is arranged on one side, close to the base, of the evaporator, and the first return air duct outlet faces the door body to discharge air;

the auxiliary air duct is provided with an auxiliary air duct outlet communicated with the heat exchange cavity, the auxiliary air duct outlet is connected to the second side surface close to the first air return duct outlet, the auxiliary air duct opening is formed in one side of the evaporator close to the base, and the auxiliary air duct outlet blows air towards the opposite second side surface;

the auxiliary air duct is opened to drive the refrigerating chamber return air blown out from the outlet of the first return air duct to the evaporator part far away from the outlet of the auxiliary air duct.

2. The refrigerator of claim 1, further comprising a condenser, a compressor, a throttling device, and a refrigerant pipe, wherein the evaporator is connected with the compressor and the condenser through the refrigerant pipe;

the refrigerator comprises a wind pressure sensor, wherein the wind pressure sensor is arranged on the refrigerant pipe which is positioned in the heat exchange cavity and is not covered by the evaporator, so as to measure the wind pressure of the air inlet cavity of the fan.

3. The refrigerator of claim 2, wherein the refrigerant pipe is at least partially located between the blower inlet chamber and the evaporator, and the wind pressure sensor is connected to the refrigerant pipe located between the blower inlet chamber and the evaporator.

4. The refrigerator of claim 2 or 3, wherein the wind pressure sensor comprises a first wind pressure sensor, the refrigerator further comprising a controller connected to the first wind pressure sensor;

the auxiliary air duct comprises an auxiliary air duct inlet communicated with the fan air outlet cavity;

the refrigerator further comprises an electric auxiliary air duct valve, the electric auxiliary air duct valve is communicated with the auxiliary air duct inlet, and the controller is connected with the electric auxiliary air duct valve.

5. The refrigerator of claim 4, wherein the wind pressure sensor further comprises a second wind pressure sensor connected to the controller; the second wind pressure sensor is connected to the refrigerant pipe between the evaporator and the fan air inlet cavity and is arranged at intervals with the first wind pressure sensor, wherein the first wind pressure sensor is close to the first air return duct outlet, and the second wind pressure sensor is far away from the first air return duct outlet.

6. The refrigerator of claim 4, further comprising a defrosting device connected to the controller, the defrosting device comprising a heating wire that releases heat to a frosting place on the evaporator when the defrosting device is turned on.

7. The refrigerator of claim 4, wherein a refrigerating chamber temperature sensor is provided in the refrigerating chamber, the refrigerating chamber temperature sensor is connected to the controller, and the refrigerating chamber temperature sensor detects a temperature Tx of the refrigerating chamber and uploads the temperature Tx to the controller.

8. The refrigerator of claim 1, wherein the refrigerating chamber and the heat exchange chamber are communicated through a refrigerating air duct, the refrigerating air duct comprises a refrigerating air return duct and a refrigerating air delivery duct, the refrigerating air delivery duct comprises a first air delivery duct inlet and a first air delivery duct outlet, and the refrigerating air delivery duct extends in an up-down direction;

the first air delivery duct inlet is positioned in the fan air outlet cavity and communicated with the fan air outlet cavity, and the first air delivery duct inlet is positioned at the lower end part of the refrigerating air delivery duct;

the first air delivery duct outlet is positioned at the upper end part of the air outlet cavity of the fan, and is communicated with the refrigerating chamber, and the first air delivery duct outlet is positioned at the upper end part of the refrigerating air delivery duct.

9. The refrigerator of claim 1, wherein the fan air inlet cavity and the fan air outlet cavity are both arranged above the heat exchange cavity, a fan mounting hole is formed in the air channel cavity shell, and the fan rotates in the fan air inlet cavity to form low pressure so that air flow in the heat exchange cavity flows upwards into the fan air inlet cavity;

the water pan is arranged in the heat exchange cavity, and the refrigerator further comprises a drain pipe which is connected to the bottom of the water pan.

10. The refrigerator according to claim 1 or 9, further comprising a freezing chamber air duct, wherein the freezing chamber and the fan air outlet cavity are communicated through the freezing chamber air duct, and the freezing chamber air duct comprises a freezing air return duct and a freezing air delivery duct;

the one side of wind channel chamber shell is close to the door body has connected gradually wind channel baffle and wind channel apron, freezing return air channel with freezing delivery air channel passes through the wind channel apron with the wind channel baffle defines, freezing return air channel with freezing delivery air channel all communicates with the freezer.