CN110274423B

CN110274423B - Refrigeration device

Info

Publication number: CN110274423B
Application number: CN201910483237.2A
Authority: CN
Inventors: 李同琴
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2021-08-31
Anticipated expiration: 2039-06-04
Also published as: CN110274423A

Abstract

The invention provides a refrigeration device, which comprises a box body, an evaporator, a fan air duct and a heater, wherein the evaporator is arranged in the box body; the evaporator and the fan air duct are arranged in the box body, the fan air duct is provided with an air inlet, and the air inlet is positioned above the evaporator; the heater is arranged in the box body and is positioned below the evaporator; the air conditioner is characterized by further comprising a flow guide device, the flow guide device is arranged between the evaporator and the air inlet and comprises a rotating motor and a baffle, the baffle comprises a frame and a plurality of blades arranged on the inner side of the frame, the blades are connected with the rotating motor, the blades guide cold air of the evaporator to enter the fan air duct under the condition that the rotating motor drives the blades to be opened, and the baffle blocks hot air of the heater from entering the fan air duct under the condition that the rotating motor drives the blades to be closed. The refrigeration equipment has the advantage that the temperature fluctuation of the chamber can be reduced.

Description

Refrigeration device

Technical Field

The invention relates to the field of refrigeration, in particular to refrigeration equipment.

Background

In the existing refrigeration equipment, taking an air-cooled refrigerator as an example, in the refrigeration process of an evaporator of the air-cooled refrigerator, when air in a compartment passes through the evaporator, the air may be desublimated due to overlarge temperature difference to form frosts; in the prior art, a heating wire is placed at the bottom of an evaporator, and the evaporator is defrosted in a high-temperature heating mode, but because the heating wire is placed close to the bottom of the evaporator, the evaporator is heated and defrosted through rising of hot air, and the hot air enters a compartment through a fan air duct on the upper part of the evaporator, so that temperature fluctuation of the compartment can be caused. And because the evaporimeter is the pipe structure, the air current flows the back, can produce vortex and turbulent phenomenon, and is very big to the influence of the air inlet efficiency of fan to cause pneumatic noise big, the fan has the stall risk simultaneously. Meanwhile, the heater is adopted to heat hot air to rise, the water receiving disc is arranged below the heater, so that the heat received by the water receiving disc is less, ice on the water receiving disc cannot melt, the ice falls into a water outlet, and the risk of blocking a water discharge pipe is caused.

In view of the above, there is a need for a new type of refrigeration device that solves or at least alleviates the above technical drawbacks.

Disclosure of Invention

The invention mainly aims to provide refrigeration equipment, and aims to solve the technical problem that the temperature fluctuation of a room of the traditional refrigeration equipment is too large.

To achieve the above object, the present invention provides a refrigerating apparatus comprising:

a box body;

an evaporator and a fan duct; the evaporator and the fan air duct are arranged in the box body, the fan air duct is provided with an air inlet, and the air inlet is positioned above the evaporator;

the heater is arranged in the box body and is positioned below the evaporator;

guiding device, set up in the evaporimeter with between the air intake, guiding device includes rotating electrical machines and baffle, the baffle includes the frame and sets up a plurality of blades of frame inboard, it is a plurality of the blade with rotating electrical machines connects rotating electrical machines drives a plurality of under the condition that the blade was opened, the cold air of evaporimeter is from a plurality of the clearance of blade gets into the fan wind channel rotating electrical machines drives a plurality of under the condition that the blade was closed, the baffle blocks the steam of heater gets into the fan wind channel.

Preferably, the plurality of blades are arranged in parallel with the shutter open to guide cool air from the evaporator into the fan duct.

Preferably, the guiding device further comprises a connecting rod, and a gear and a rack which are meshed with each other, the gear is in transmission connection with the rotating motor, the number of the connecting rods is multiple, one end of the connecting rod is hinged to the rack, the other end of the connecting rod is fixedly connected with the blade, and the connecting rod drives the blade to be opened or closed through movement of the rack.

Preferably, the gear includes driving gear and driven gear, the driving gear with the rotating electrical machines transmission is connected, driven gear distributes in the both sides of driving gear.

Preferably, the flow guide device further comprises travel switches, the travel switches are respectively arranged on the upper side and the lower side of the rack, and the travel switches are in signal connection with the rotating motor.

Preferably, the guiding device comprises a shell, the gear and the rack are both arranged in the shell, a support is further arranged in the shell, and the gear and the rack are mounted on the support.

Preferably, the rotating motor is a servo motor.

Preferably, the refrigeration equipment further comprises a water pan, the water pan is arranged below the heater, and one surface of the blades, facing the water pan, is coated with a heat reflection coating layer.

Preferably, the refrigeration equipment further comprises a water pan, the water pan is arranged below the heater, and an aluminum foil layer is arranged on one surface of the blades facing the water pan.

Preferably, the refrigeration equipment further comprises a main control board, and the main control board is in signal connection with the evaporator, the heater, the rotating motor and the travel switch respectively.

In the technical scheme of the invention, the flow guide device is arranged between the evaporator and the air inlet of the fan air duct, when the refrigeration equipment refrigerates, the rotating motor controls the plurality of blades to be opened, and cold air from the evaporator passes through gaps among the plurality of blades and enters the compartment (which can be a refrigerating compartment) from the air inlet to play a refrigeration role; when the refrigerator is in when changing the frost, the evaporimeter heating, steam rises and changes the frost to the evaporimeter through the evaporimeter condenser pipe, and rotating electrical machines control a plurality of blades and close this moment, and whole baffle forms a confined baffle and blocks the top of sending out the ware, blocks that the steam of heater rises and gets into the fan wind channel, avoids causing the room temperature fluctuation because of steam gets into the room. The invention has the advantage of being capable of reducing the temperature fluctuation of the compartment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a portion of a refrigeration unit according to an embodiment of the present invention;

FIG. 2 is a schematic view of a closed state of a vane of a refrigeration unit in accordance with an embodiment of the present invention;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is another schematic illustration of a closed vane condition of a refrigeration unit in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of an open state of a refrigeration unit vane according to an embodiment of the present invention;

FIG. 6 is a left side view of FIG. 5;

fig. 7 is another schematic view of the opened state of the refrigeration equipment blade according to the embodiment of the invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Box body	2	Evaporator with a heat exchanger
3	Fan air duct	31	Air inlet
				4	Heating device	5	Flow guiding device
6	Water pan	32	Air outlet
				7	Rotating electrical machine	8	Baffle plate
9	Blade	10	Shell body
				11	Rack bar	13	Connecting rod
101	Driving gear	102	Driven gear
				14	Travel switch	15	Compartment
17	Fan blower

The implementation, functional features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that all the directional indicators (such as the upper and lower … …) in the embodiment of the present invention are only used to explain the relative position relationship, movement, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a refrigeration device, which aims to solve the technical problem of excessive temperature fluctuation of a conventional refrigeration device compartment 15.

a box body 1;

an evaporator 2 and a fan duct 3; the evaporator 2 and the fan air duct 3 are arranged in the box body 1, the fan air duct 3 is provided with an air inlet 31, and the air inlet 31 is positioned above the evaporator 2;

the heater 4 is arranged in the box body 1, and the heater 4 is positioned below the evaporator 2;

guiding device 5, guiding device 5 sets up between evaporimeter 2 and air intake 31, guiding device 5 includes rotating electrical machines 7 and baffle 8, baffle 8 includes the frame and sets up a plurality of blades 9 at the frame inboard, a plurality of blades 9 are connected with rotating electrical machines 7, under the condition that rotating electrical machines 7 drive a plurality of blades 9 and open, the cold air of evaporimeter 2 gets into fan wind channel 3 from the clearance of a plurality of blades 9, under the condition that rotating electrical machines 7 drive a plurality of blades 9 and close, baffle 8 blocks the hot gas entering fan wind channel 3 of heater 4.

In the above embodiment, the flow guiding device 5 is arranged between the evaporator 2 and the air inlet 31 of the fan air duct 3, when the refrigeration equipment is used for refrigeration, the rotating motor 7 controls the plurality of blades 9 to be opened, cold air from the evaporator 2 passes through gaps among the plurality of blades 9, enters the fan air duct 3 from the air inlet 31, and enters the compartment 15 (which may be a refrigerating compartment or a freezing compartment of the refrigeration equipment) from the air outlet 32 of the fan air duct 3 to play a refrigeration role; when the refrigerator is in when changing the frost, 2 heats of evaporimeter, and steam rises and changes the frost to evaporimeter 2 through 2 condenser pipes of evaporimeter, and rotating electrical machines 7 control a plurality of blades 9 and close this moment, and sealed cooperation makes whole baffle 8 form a confined baffle 8 and violently in the top of evaporimeter 2 between two adjacent blades 9, blocks that the steam of heater 4 rises and gets into fan wind channel 3, avoids causing 15 temperature fluctuations of compartment because of steam gets into compartment 15. The sealing fit can be a partially overlapped fit of adjacent parts, or the sides of adjacent blades 9 are just abutted together, as long as air can be prevented from entering the fan duct 3 from the blades 9. This invention has the advantage of being able to reduce the temperature fluctuations of the compartment 15. The refrigerating equipment can be household appliances such as a refrigerator, a freezer, a wine cabinet or a freezer.

Referring to fig. 4 to 5, according to a preferred embodiment of the present invention, a plurality of blades 9 are arranged in parallel to guide cool air of the evaporator 2 into the fan duct 3 with the damper 8 open. The air inlet 31 may be provided with a blower 17 for blowing cold air from the evaporator 2 into the air inlet duct. Because the evaporator 2 is the pipe structure, the air current flows the back, can produce vortex and turbulent phenomenon, and is very big to the influence of the air inlet efficiency of fan to it is big to cause pneumatic noise, and the fan has the stall risk simultaneously. The blades 9 are arranged in parallel, after the blades 9 are opened, the openings formed between the blades 9 are also arranged in parallel, and the cold air blown out of the evaporator 2 forms parallel air flow under the guide action of the blades 9, so that the vortex and the disorder phenomenon can not be generated. The opening angle of the vanes 9 may be controlled by the rotating electric machine 7, and may be either a certain angle or all of the opening angles.

Referring to fig. 2 to 7, according to another preferred embodiment of the present invention, the deflector 5 further includes a plurality of connecting rods 13 and a plurality of gears and a rack 11 engaged with each other, the gears are in transmission connection with the rotating motor 7, one end of each connecting rod 13 is hinged to the rack 11, and the other end of each connecting rod 13 is fixedly connected to the vane 9, so that the connecting rod 13 drives the vane 9 to open or close by the movement of the rack 11. The gear is driven to rotate by the rotating motor 7, the gear drives the rack 11 to move up and down, so that the connecting rod 13 hinged with the rack 11 is driven to move, and the other end of the connecting rod 13 drives the vane 9 to rotate, so that the vane 9 is opened or closed. The blades 9 may be rectangular strips. It should be noted that fig. 4 and 7 are only partial schematic views of the air guiding device, and are only for illustrating the connection relationship between the connecting rod and the rack and the vane.

As a preferred implementation manner of the above embodiment, as shown in fig. 6, the gear includes a driving gear 101 and a driven gear 102, the driving gear 101 is in transmission connection with the rotating electrical machine 7, and the driven gear 102 is distributed on both sides of the driving gear 101. The driving gear 101 is used for driving the rack 11 to move up and down, and the driven gear 102 mainly plays a limiting role, so that the rack 11 is prevented from being warped, and the rack 11 is ensured to move along the vertical direction.

Referring to fig. 2 to 5, in addition, the deflector 5 further includes travel switches 14, the travel switches 14 are respectively disposed on the upper side and the lower side of the rack 11, and the travel switches 14 are in signal connection with the rotating electrical machine 7. Travel switches 14 are provided at a distance from the upper and lower ends of the rack 11. The travel switch 14 includes an up travel switch and a down travel switch. For example, when the rack 11 moves to the upper travel switch, the travel switch 14 sends a signal to the rotating motor 7, and the rotating motor 7 stops rotating, preventing the rack 11 from moving beyond a preset range.

In addition, the deflector 5 includes a housing 10, a gear and a rack 11 are both disposed in the housing 10, and a bracket (not shown) is further disposed in the housing 10, and the gear and the rack 11 are mounted on the bracket. The rotating motor 7 is also arranged in the shell 10, and the shell 10 mainly plays a role in protecting the gear, the rack 11 and the rotating motor 7, so that excessive cold air is prevented from entering the rotating motor 7 and the rack and pinion 11, and the service life is prolonged.

Of course, the rotating motor 7 is a servo motor, and the rotating motor 7 can rotate forward or backward to control the opening and closing of the blades 9, and can also rotate to any angle to control the opening angle of the blades 9 and control the air intake and air intake speed of the fan air duct.

Referring to fig. 1, further, the refrigeration equipment further comprises a water pan 6, the water pan 6 is arranged below the heater 4, and one surface of the plurality of blades 9 facing the water pan 6 is coated with a heat reflection coating layer. In the defrosting process of the refrigerator in the prior art, the heater 4 is heated, hot gas rises, the water pan 6 is arranged below the heater 4, so that the heat received by the water pan 6 is less, ice on the water pan 6 cannot melt, the ice cannot fall into a water outlet, and the risk of blocking the water outlet pipe is caused. In this embodiment, because blade 9 coating has the heat reflection coating layer, can reflect the water collector 6 of heater 4 below with the heat of steam, melt the ice on the water collector 6, reduce the risk that the ice-cube blockked up the drain pipe, the heat reflection coating can be the polyester coating of nickeliferous or aluminium.

As another embodiment of the above embodiment, a heat reflective material, which may be a gold, silver, nickel or aluminum foil layer, may be provided on the surface of the plurality of blades 9 facing the water pan 6, and an aluminum foil is preferred for cost reasons. The aluminum foil layer also acts as a heat reflector, reflecting the heat of the hot gases to the drip pan 6 below the heater 4.

Preferably, the refrigeration equipment further comprises a main control board which is in signal connection with the evaporator 2, the heater 4, the rotating motor 7 and the travel switch 14 respectively. The main control panel controls the movement of the rotary motor 7, i.e., opens or closes the vanes 9, according to the operation state of the cooling device (e.g., cooling or defrosting).

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical spirit of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A refrigeration apparatus, comprising:

a box body;

the evaporator and the fan air duct are arranged in the box body, an air inlet is formed in the fan air duct, and the air inlet is positioned above the evaporator;

the heater is arranged in the box body and is positioned below the evaporator;

the flow guide device is arranged between the evaporator and the air inlet, and comprises a rotating motor and a baffle plate, the baffle plate comprises a frame and a plurality of blades arranged on the inner side of the frame, the blades are connected with the rotating motor, cold air of the evaporator enters the fan air duct from gaps of the blades under the condition that the rotating motor drives the blades to be opened, and hot air of the heater enters the fan air duct under the condition that the rotating motor drives the blades to be closed;

the refrigeration equipment further comprises a water pan, the water pan is arranged below the heater, and a heat reflection coating layer is coated on one surface, facing the water pan, of the blades.

2. The refrigeration appliance according to claim 1 wherein a plurality of said vanes are arranged in parallel with said baffle open to direct cool air from said evaporator into said fan duct.

3. The refrigeration equipment as claimed in claim 1, wherein the flow guide device further comprises a connecting rod and a gear and a rack which are meshed with each other, the gear is in transmission connection with the rotating motor, the number of the connecting rods is multiple, one end of each connecting rod is hinged with the rack, and the other end of each connecting rod is fixedly connected with the vane, so that the connecting rod drives the vane to open or close through the movement of the rack.

4. The refrigeration device as recited in claim 3 wherein the gear comprises a driving gear and a driven gear, the driving gear is in transmission connection with the rotating electrical machine, and the driven gear is distributed on two sides of the driving gear.

5. The refrigeration equipment as claimed in claim 3, wherein the flow guide device further comprises travel switches respectively disposed at upper and lower sides of the rack, the travel switches being in signal connection with the rotating electrical machine.

6. The refrigeration device as recited in claim 5 further comprising a main control board in signal connection with the evaporator, the heater, the rotary motor and the travel switch, respectively.

7. The refrigeration appliance according to claim 3, wherein the deflector comprises a housing, the gear and the rack are both disposed in the housing, a bracket is further disposed in the housing, and the gear and the rack are mounted to the bracket.

8. A cold appliance according to any of claims 1-7, wherein the rotating electrical machine is a servo motor.

9. A cold appliance according to any of claims 1-7, wherein the side of the plurality of vanes facing the water tray is provided with a layer of aluminium foil.