CN220793526U - Hot gas blocking device and refrigerator - Google Patents

Abstract

The utility model discloses a hot gas blocking device and a refrigerator, comprising: the water storage tank is connected with a refrigerator refrigerating compartment to collect condensed water; the ventilation bearing piece is arranged at the air duct opening of the blocked compartment and used for bearing the ice film; the spray pipes are connected with the water storage tank, and the spray ends are aligned with the ventilation bearing piece; and the controller is used for starting the spraying pipe to spray the breathable bearing part when the refrigerator reaches a defrosting condition, so that an ice film for blocking hot air is formed on the breathable bearing part. According to the utility model, condensed water and defrosting water are sprayed at the air channel inlet and the air return opening of the deep freezing area, an ice film with a certain thickness is formed at the air channel inlet and the air return opening by utilizing the low-temperature environment of the evaporator cavity so as to isolate hot air entering the deep freezing compartment during defrosting, so that temperature fluctuation is caused, wherein the air channel inlet and the air return opening of the deep freezing area are both provided with grids which are favorable for adhesion of the ice film, and when the ice film reaches a certain thickness, electric heating is started to enter a defrosting link, and the ice film always exists during defrosting and has the function of isolating defrosting hot air.

Description

Hot gas blocking device and refrigerator

Technical Field

The utility model relates to the technical field of refrigerators, in particular to a hot gas blocking device and a refrigerator.

Background

With the continuous improvement of living standard, air-cooled refrigerators are also becoming popular, and meanwhile, the requirements of people on food storage of the refrigerators are also increasing. Particularly, the deep freezing refrigerator at the temperature of minus 50 ℃ can frost on the evaporator after the refrigerator works normally for a period of time, so that the refrigerator needs to automatically defrost periodically, and in the defrosting process of the refrigerator, hot air in the evaporator cavity can enter the freezing compartment through the air duct inlet and the air return port, so that the temperature of the compartment is increased, and the storage and the fresh keeping of foods are not facilitated.

Disclosure of Invention

The utility model provides a hot air blocking device and a refrigerator, and aims to solve the technical problem that hot air returns to a deep freezing or freezing compartment through an air duct in the defrosting process of the refrigerator in the prior art.

The technical scheme adopted by the utility model is as follows:

the utility model proposes a hot gas barrier device comprising:

the ventilation bearing piece is arranged at the air duct opening of the blocked compartment and used for bearing the ice film;

the spraying ends of the spraying pipes are aligned with the ventilation bearing piece;

the water storage tank is connected with the spray pipe to supply water to the spray pipe;

and the controller is used for starting the spraying pipe to spray the breathable bearing part when the refrigerator reaches a defrosting condition, so that an ice film for blocking hot air is formed on the breathable bearing part.

Further, the spray pipe is provided with a corresponding spray pump, and the controller starts the spray pump to enable the spray pipe to be started for spraying.

Specifically, the breathable bearing piece comprises a first grille and a second grille, wherein the first grille is arranged at an air duct inlet of the blocked compartment, and the second grille is arranged at an air return opening of the blocked compartment.

In a first embodiment, the first grille and the second grille are net-shaped.

In the second embodiment, a plurality of sheet-shaped fan blades with the same inclination angle are arranged on the windward surfaces of the first grille and the second grille at intervals, and a plurality of raised strips are arranged on the sheet-shaped fan blades.

The utility model further comprises an ice film thickness detection device, and when the ice film thickness detected by the ice film thickness detection device is larger than or equal to a preset value, the controller closes the spray pipe.

Further, a first electric heating wire is wound on the spray pipe, and the controller controls the first electric heating wire to be electrified when the refrigerator achieves a defrosting condition.

Further, a second electric heating wire is arranged at the air duct opening of the freezing compartment, and the controller starts the second electric heating wire when the refrigerator finishes defrosting.

Further, the water storage tank is connected with a water receiving disc of the refrigerator through a water receiving disc pipeline and is connected with a refrigerating compartment of the refrigerator through a condensed water pipeline to collect condensed water, and the water receiving disc is provided with a water suction pump corresponding to the water receiving disc pipeline.

The water storage tank is internally provided with a water level detection device, when the water level detection device detects that the water level of the water storage tank does not reach a preset water level line, the controller starts the water suction pump of the water receiving disc to convey defrosting water in the water receiving disc to the water storage tank for storage, and when the water level in the water storage tank reaches the preset water level line, the water suction pump in the water receiving disc is closed.

Specifically, the water storage tank is pre-buried in the foaming layer of the refrigerator and arranged above the deep freezing container of the refrigerator, and the isolated compartment is a deep freezing compartment.

The utility model also provides a refrigerator comprising the hot gas blocking device.

The refrigerator includes: the refrigerator comprises a refrigerator body, a refrigerator liner arranged on the upper portion of the refrigerator body, and a deep freezing liner and a freezing liner which are arranged on the lower portion of the refrigerator body side by side.

Further, a cold accumulation plate is arranged in the freezing chamber of the refrigerator.

Compared with the prior art, the utility model sprays the refrigerating condensed water and the refrigerator defrosting water at the air channel inlet and the air return opening of the deep freezing area, and forms the ice film with a certain thickness at the air channel inlet and the air return opening by utilizing the low-temperature environment of the evaporator cavity so as to isolate the temperature fluctuation caused by the hot air entering the deep freezing room during defrosting, wherein the air channel inlet and the air return opening of the deep freezing area are both provided with grids which are favorable for the adhesion of the ice film, and when the ice film reaches a certain thickness, the electric heating is started to enter the defrosting link, and the ice film always exists during defrosting and has the function of isolating the defrosting hot air.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present 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 side view of a prior art evaporator bin location;

FIG. 2 is a side view of an evaporator bin position in an embodiment of the utility model forming an ice film;

fig. 3 is a schematic structural view of a side of a refrigerator according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a deep-frozen container according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a pipeline structure of a water storage tank in an embodiment of the utility model;

fig. 6 is a schematic structural diagram of a deep-frozen container liner protruding from a second heating wire in an embodiment of the utility model;

FIG. 7 is a schematic perspective view of a deep-frozen container according to an embodiment of the utility model;

FIG. 8 is a schematic view of a first grille according to a first embodiment of the present utility model;

FIG. 9 is a schematic view showing the structure of a second grille according to the first embodiment of the present utility model;

FIG. 10 is a schematic view showing the structure of a first grille according to a second embodiment of the present utility model;

FIG. 11 is a schematic view of a second grille according to a second embodiment of the present utility model;

FIG. 12 is an enlarged view of a portion of FIG. 11;

FIG. 13 is a schematic view of a cold accumulation plate according to an embodiment of the present utility model;

FIG. 14 is a control flow diagram in an embodiment of the utility model;

1. an evaporator; 11. a water receiving tray; 12. defrosting water pipeline; 13. a water suction pump;

2. a water storage tank;

21. an ice film; 22. a return air inlet duct; 23. a water jet pump; 24. an air duct inlet duct; 25. a water receiving tray pipeline; 261. a first grid; 262. a second grid; 27. a sprayer; 28. a first electric heating wire; 29. a second electric heating wire;

3. a refrigerator liner; 31. a condensed water pipe;

4. deep freezing container; 41. a blower;

5. a freezer liner; 51. a cold accumulation plate;

6. a foaming layer;

7. and a compressor bin.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The principles and structures of the present utility model are described in detail below with reference to the drawings and the examples.

With the continuous improvement of living standard, air-cooled refrigerators are also becoming popular, and meanwhile, the requirements of people on food storage of the refrigerators are also increasing. After the refrigerator works normally for a period of time, water vapor in the cold air can frost on the evaporator, so that the refrigerator needs to automatically defrost periodically, and in the defrosting process of the refrigerator, as shown in fig. 1, hot air in the evaporator chamber can enter the freezing compartment through the air duct inlet and the air return opening, so that the temperature of the compartment is increased, and the storage and the fresh keeping of foods are not facilitated. In the prior art, an evaporator is divided into two evaporation parts, and the characteristics of a semiconductor refrigerating sheet are utilized to cool and heat the evaporator at the same time, so that the cooling capacity and the heat are counteracted to prevent the temperature of an inner compartment of the refrigerator from rising too fast. The application provides a steam separation device, use in the deep-frozen refrigerator of-50 ℃, spray refrigerating comdenstion water and refrigerator defrosting water in deep-frozen region wind channel entry and return air inlet department, utilize the low temperature environment of evaporimeter cavity to form the ice film that has certain thickness in wind channel entry and return air inlet in order to isolate the steam entering deep-frozen compartment in the period of defrosting and cause temperature fluctuation (as shown in figure 2), wherein the freezing wind channel entry in deep-frozen region and return air inlet all are provided with the grid that is favorable to the ice film to adhere to, start the electrical heating after the ice film reaches certain thickness and get into defrosting link, the ice film is always present and has the effect of isolating defrosting steam during the defrosting.

As shown in fig. 4 to 7, the present utility model proposes a hot gas blocking device comprising: the water storage tank 2, the ventilation bearing piece, a plurality of spray pipes and a water spraying pump 23; the water storage tank 2 is arranged above the deep freezing container 4 of the refrigerator, the upper part of the water storage tank 2 is connected with a condensed water pipeline 31 which is communicated with the bottom of the refrigerating chamber, so that condensed water in the refrigerating chamber can be collected by the water storage tank 2, the water storage tank 2 is connected with a plurality of spray pipes, namely an air return pipeline 22 and an air duct inlet pipeline 24, and the spray ends of the air return pipeline 22 and the air duct inlet pipeline 24 are provided with sprayers 27 which are respectively aligned with an air return port and an air duct inlet of a blocked chamber (particularly a freezing chamber or a deep freezing chamber); the ventilation bearing piece is arranged at the return air inlet and the air duct inlet of the freezing compartment and is used for bearing the ice film 21; the water spraying pump 23 is arranged in the water storage tank 2 and corresponds to each spraying pipe respectively, when the refrigerator achieves defrosting conditions, the controller (which can be a controller of the refrigerator or a controller of the hot gas blocking device) starts the water spraying pump 23 to supply water to each spraying pipe (namely, opens the spraying pipe) to spray the breathable bearing piece, so that an ice film 21 for blocking hot gas is formed on the breathable bearing piece. The ice film 21 is always present during defrosting of the refrigerator and has the function of isolating defrosting hot air, preventing the deep freezing compartment from entering the hot air to cause temperature fluctuation.

In the specific embodiment shown in fig. 3, the compartment to be blocked is a deep freezer compartment 4, i.e. a deep freezer compartment, arranged below the refrigerator compartment 3.

In a specific embodiment, as shown in fig. 4, the air permeable carrier is a grille, and specifically includes a first grille 261 and a second grille 262, where the first grille 261 is installed at the air duct inlet of the deep-freezing compartment, and the second grille 262 is installed at the air return opening of the deep-freezing compartment. The first grille 261 is circular, and supporting feet are arranged on the edge of the leeward surface opposite to the air duct inlet, so that the first grille 261 can be fixed at the air duct inlet; the second grille 262 is rectangular, and the edge of the leeward surface facing the air return opening is provided with supporting feet, so that the second grille 262 can be fixed at the air return opening.

As shown in fig. 8 and 9, in the first embodiment, the grille is in a grid shape, wherein the first grille includes a plurality of circles of circular spokes with gradually increasing radius, and radial spokes connected with the circular spokes in a radial arrangement. An ice film may be formed at the gap between the circular spokes and the radius spokes to cover the air duct inlet. The second grille is rectangular and corresponds to the shape of the return air inlet, and is in a grid shape.

As shown in fig. 10, 11 and 12, in the second embodiment, the grille is in a sheet shape, wherein the first grille comprises a circle of circular spokes, a plurality of reinforcing spokes connected with each other in the circular spokes, and a plurality of sheet-shaped fan blades, the sheet-shaped fan blades are perpendicular to the reinforcing spokes and are connected with the circular spokes at the same time, the length of the sheet-shaped fan blades is adapted to the surrounding area of the circular spokes, and the length of the sheet-shaped fan blades positioned in the middle is approximately equal to the diameter of the circular spokes. The slice flabellum slope sets up and inclination is the same, is equipped with long banding sand grip on the slice flabellum simultaneously and makes slice flabellum surface unevenness be convenient for steam and remains, forms the ice film more easily. The second grille is rectangular and corresponds to the shape of the return air inlet, a plurality of parallel flaky fan blades are arranged at intervals along the length direction, and a plurality of long strip-shaped raised strips are arranged on the flaky fan blades, so that the surface of the flaky fan blades is uneven, water vapor is convenient to remain, and an ice film is easier to form.

In a specific embodiment, the first electric heating wire 28 is arranged on the spray pipe, and when the refrigerator reaches a defrosting condition, the first electric heating wire 28 is electrified and used for melting an ice layer in the spray pipe, so that the spray pipe can normally spray. The first electric heating wire 28 may be wound around the spray pipe, and the spray pipe may be a metal pipe for heat transfer, or may be a plastic material, i.e. the first electric heating wire 28 is disposed on the inner wall of the spray pipe, and directly heats the ice layer in the spray pipe.

In a specific embodiment, the air duct opening of the compartment to be blocked is provided with a second electric heating wire 29, specifically, the air duct opening and the air return opening, and when defrosting of the refrigerator is finished, the second electric heating wire 29 is electrified to melt the ice film 21 of the air duct opening, so that the compartment to be blocked can normally refrigerate.

In a specific embodiment, the refrigerator further comprises an ice film 21 thickness detection device for detecting the thickness of the ice film 21, when the refrigerator reaches a defrosting condition, the water spraying pump 23 is started to supply water to each spraying pipe, the thickness of the ice film 21 is detected in real time, and when the thickness of the ice film 21 reaches a preset thickness, the water spraying pump 23 is closed to stop spraying water. The thickness of the ice film 21 is detected by the thickness detection device of the ice film 21, so that the ice film 21 can not be directly penetrated by hot air to cause the hot air to enter the blocked compartment when the hot air is frosted.

In a specific embodiment, the water storage tank 2 is pre-buried in the foaming layer 6 of the refrigerator and is arranged above the deep freezing tank liner 4 of the refrigerator, and is positioned below a refrigerating compartment of the refrigerator, the water storage tank 2 is connected to the bottom of the refrigerating compartment through a condensed water pipeline 31, so that condensed water in the refrigerating compartment can be collected by the water storage tank 2, a return air inlet pipeline 22 is arranged on the left side of the water storage tank 2 and is used as a spray pipe of an air return opening, an air channel inlet pipeline 24 is arranged in the middle and is used as a spray pipe of an air channel inlet, meanwhile, the spray ends of the air return opening pipeline 22 and the air channel inlet pipeline 24 are both provided with sprayers 27, the right side of the water storage tank 2 is provided with a water receiving disc 11 which is connected with the bottom of the refrigerator through the pipeline, the water receiving disc 11 is connected with a defrosting water pipeline 12 through a compressor bin, the defrosting water receiving disc 11 is used for collecting defrosting water produced by defrosting the evaporator 1, a water suction pump 13 corresponding to the water receiving disc 11 pipeline is arranged in the water receiving disc 11, and when water in the water storage tank 2 is insufficient, water can be sucked into the water storage tank 2 through the water suction pump 13.

In a specific embodiment, a water level detection device is arranged in the water storage tank 2, so that whether the water level in the water storage tank 2 reaches a preset water level line or not can be detected, when the water level is insufficient, the water suction pump 13 of the water receiving disc 11 is started to convey defrosting water in the water receiving disc 11 to the water storage tank 2 for storage, and when the water level in the water storage tank 2 reaches the preset water level line, the water suction pump 13 in the water receiving disc 11 is closed.

The utility model provides a refrigerator which comprises the hot gas blocking device.

In a specific embodiment, the refrigerator is a deep freezer refrigerator. The refrigerator specifically comprises: the refrigerator liner 3 is arranged at the upper part, and the deep freezing liner 4 and the freezing liner 5 are arranged at the lower part side by side.

The back of the middle part of the deep freezing box liner 4 is provided with an air channel inlet, the bottom is provided with an air return opening, and the air channel inlet is provided with a fan 41 for sending air in the air channel into the deep freezing box liner 4. The back of the deep freezing container 4 is an evaporator 1 chamber, and when the spray pipe sprays, the low-temperature environment of the evaporator 1 chamber can be the thickness of the ice film which is formed by rapid condensation and repeated superposition of water drops attached to the grid.

As shown in fig. 14, the specific control in the refrigerator is as follows:

when the refrigerator reaches defrosting conditions, a compressor and a fan of the refrigerator are firstly turned off, a first electric heating wire and a water spray pump which are wound outside a spray pipe are started, the electric heating wire heats a pipeline, a water source in a water storage tank is conveyed to an air channel inlet and an air return opening of a deep freezing area (a deep freezing compartment) through the spray pipe, the spray operation is carried out on grids at the air channel inlet and the air return opening through an atomized spray installed at the tail end of the pipeline, the water source attached to the grids is quickly condensed and overlapped with the thickness of an ice film for a plurality of times by means of the low-temperature environment of an evaporator chamber, the thickness of the ice film is detected in real time by an ice film thickness detection device, the water spray pump is controlled to stop working and the spraying process is ended when the thickness of the ice film at the air channel inlet and the air return opening reaches a preset value, and the thickness of the ice film is required to meet the requirement that the ice film always exists in the whole defrosting period and has the function of isolating defrosting hot air.

After defrosting is finished, the ice films at the inlet of the freezing air duct and the air return opening are not completely melted, so that the second electric heating wires at the inlet of the air duct and the air return opening are started to melt the residual ice layers after defrosting is finished, and smoothness of an air path is ensured.

As shown in fig. 13, during the whole defrosting period, the compressor stops working, the evaporator does not refrigerate, defrosting is performed by an electric heating belt on the evaporator, if the ring temperature is too high, the temperature rise of the freezing compartment can be accelerated, a concave table is added at the bottom of the freezing drawer (which can be the freezing compartment or the deep freezing compartment) and is embedded into the cold accumulation plate 51, the cold accumulation plate 51 is filled with cold accumulation agent, and the temperature of the freezing compartment is kept not to rise by the cold accumulation agent.

It is noted that the above-mentioned terms are used merely to describe specific embodiments, and are not intended to limit exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (14)

1. A hot gas blocking device, comprising:

the ventilation bearing piece is arranged at the air duct opening of the blocked compartment and used for bearing the ice film;

the spraying ends of the spraying pipes are aligned with the ventilation bearing piece;

the water storage tank is connected with the spray pipe to supply water to the spray pipe;

and the controller is used for starting the spraying pipe to spray the breathable bearing part when the refrigerator reaches a defrosting condition, so that an ice film for blocking hot air is formed on the breathable bearing part.

2. The hot gas blocking device according to claim 1, wherein the spray pipes are provided with corresponding spray pumps, and the controller turns on the spray pumps to turn on the spray pipes for spraying.

3. The hot gas blocking device according to claim 1, wherein the gas permeable carrier comprises a first grille mounted at the air duct inlet of the blocked compartment and a second grille mounted at the return air inlet of the blocked compartment.

4. The hot gas blocking apparatus of claim 3, wherein the first and second grills are net-shaped.

5. The hot air blocking device according to claim 3, wherein a plurality of sheet-shaped blades with the same inclination angle are arranged on the windward surfaces of the first grille and the second grille at intervals, and a plurality of raised strips are arranged on the sheet-shaped blades.

6. The hot gas blocking apparatus of claim 1, further comprising an ice film thickness detecting means, wherein the controller closes the shower pipe when the ice film thickness detected by the ice film thickness detecting means is greater than or equal to a preset value.

7. The hot gas blocking apparatus of claim 1, wherein the shower pipe is wound with a first electric heating wire, and the controller controls the first electric heating wire to be energized when the refrigerator reaches a defrosting condition.

8. The hot gas blocking device of claim 1, wherein the air duct port is provided with a second electric heating wire, and the controller activates the second electric heating wire when the refrigerator finishes defrosting.

9. The hot gas blocking apparatus of claim 1, wherein the water storage tank is connected to a water receiving tray of the refrigerator through a water receiving tray pipe, and is connected to a refrigerating compartment of the refrigerator through a condensed water pipe to collect condensed water, and the water receiving tray is provided with a water suction pump corresponding to the water receiving tray pipe.

10. The hot gas blocking device according to claim 8, wherein a water level detection device is arranged in the water storage tank, the controller starts a water suction pump of the water receiving tray to convey defrosting water in the water receiving tray to the water storage tank for storage when the water level in the water storage tank reaches a preset water level line, and closes the water suction pump in the water receiving tray when the water level in the water storage tank reaches the preset water level line.

11. The hot gas blocking device according to claim 1, wherein the water storage tank is pre-buried in a foaming layer of a refrigerator and is arranged above a deep freezing container of the refrigerator, and the blocked compartment is a deep freezing compartment.

12. A refrigerator comprising the hot gas blocking device according to any one of claims 1 to 11.

13. The refrigerator of claim 12, wherein the refrigerator comprises: the refrigerator comprises a refrigerator body, a refrigerator liner arranged on the upper portion of the refrigerator body, and a deep freezing liner and a freezing liner which are arranged on the lower portion of the refrigerator body side by side.

14. The refrigerator of claim 12, wherein a cold accumulation plate is provided in a freezing compartment of the refrigerator.