CN110736292A - Multi-temperature-zone refrigerator air duct system and multi-temperature-zone refrigerator - Google Patents

Multi-temperature-zone refrigerator air duct system and multi-temperature-zone refrigerator Download PDF

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Publication number
CN110736292A
CN110736292A CN201911090309.3A CN201911090309A CN110736292A CN 110736292 A CN110736292 A CN 110736292A CN 201911090309 A CN201911090309 A CN 201911090309A CN 110736292 A CN110736292 A CN 110736292A
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CN
China
Prior art keywords
air
duct
zone
temperature
freezing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911090309.3A
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Chinese (zh)
Inventor
王冠
郑英杰
李宗照
梁赵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Hefei Jing Hong Electrical Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Hefei Jing Hong Electrical Co Ltd
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Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai, Hefei Jing Hong Electrical Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201911090309.3A priority Critical patent/CN110736292A/en
Publication of CN110736292A publication Critical patent/CN110736292A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/143—Collecting condense or defrost water; Removing condense or defrost water characterised by means to fix, clamp, or connect water pipes or evaporation trays

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The invention provides a multi-temperature-zone refrigerator air duct system, which comprises a freezing zone, a refrigerating zone and a variable-temperature zone with working temperature between the freezing zone and the refrigerating zone, wherein a th drain pipe is arranged at an air inlet of the refrigerating zone and/or a second drain pipe is arranged at an air inlet of the variable-temperature zone, when a th drain pipe is arranged, the drain pipe is connected with an air outlet of the refrigerating zone or an air outlet duct of the refrigerating zone, and when the second drain pipe is arranged, the second drain pipe is connected with an air outlet of the variable-temperature zone or the air outlet duct of the variable-temperature zone.

Description

Multi-temperature-zone refrigerator air duct system and multi-temperature-zone refrigerator
Technical Field
The invention relates to a refrigerator, in particular to an multi-temperature-zone refrigerator air duct system and a multi-temperature-zone refrigerator.
Background
In the prior art, a single-system multi-temperature-zone air duct system and a refrigerator thereof are applied, but the air duct system has the problems of difficult defrosting and easy frost deposition of wind , and the problems of icing, frosting and the like are easily caused due to the fact that defrosting water is easily accumulated in the air duct system.
Disclosure of Invention
In view of the above, the present invention provides kinds of multi-temperature-zone refrigerator air duct systems and an arrangement method of the multi-temperature-zone refrigerator air duct systems, so as to solve the above problems, specifically:
the invention provides multi-temperature-zone refrigerator air duct system in , the multi-temperature zone comprises a freezing zone, a refrigerating zone and a variable temperature zone with working temperature between the freezing zone and the refrigerating zone, an th drain pipe is arranged in a refrigerating zone air inlet duct connected with an air inlet of the refrigerating zone and/or a second drain pipe is arranged in a variable temperature zone air inlet duct connected with an air inlet of the variable temperature zone, when a th drain pipe is arranged, the drain pipe is connected with an air outlet of the refrigerating zone or an air outlet duct of the refrigerating zone, and when the second drain pipe is arranged, the second drain pipe is connected with the air outlet of the variable temperature zone or the air outlet duct of the variable temperature zone.
Preferably, the inlet air of the cold storage area is arranged in the vertical direction or forms an acute angle with the vertical direction, and the inlet air of the temperature-variable area is arranged in the vertical direction or forms an acute angle with the vertical direction.
Preferably, the inlet air of the cold storage area is arranged to form an acute angle with the vertical direction within a range of not more than 45 degrees, and the inlet air of the temperature-variable area is arranged to form an acute angle with the vertical direction within a range of not more than 45 degrees.
Preferably, the air duct system further comprises at least heaters arranged on the temperature changing zone air inlet duct.
Preferably, the th heater is arranged on the side of the inlet air close to the temperature-changing area.
Preferably, a second heater is arranged on the side of the return air duct close to the freezing area inlet air duct.
Preferably, the drain pipe is arranged on the lower wall of a turning part of the temperature varying area air inlet duct close to the end of the temperature varying area and/or the lower wall of the temperature varying area air supply duct arranged in the horizontal direction.
Preferably, the drain pipe comprises a drain inserting pipe arranged on an air inlet duct of the variable temperature chamber and a drain inserting hole arranged on the return air channel.
The invention provides kinds of multi-temperature-zone refrigerator air duct system, the multi-temperature-zone includes a freezing zone, a refrigerating zone and a temperature changing zone with working temperature between the freezing zone and the refrigerating zone,
the air duct system comprises a freezing area air inlet duct, a cold storage area air outlet duct, a variable temperature area air inlet duct, a variable temperature area air outlet duct and a return air duct;
the freezing area is provided with a freezing area air inlet, a freezing area th air outlet and a freezing area second air outlet;
the cold storage area is provided with a cold storage area air inlet and a cold storage area air outlet;
the variable temperature zone is provided with a variable temperature zone air inlet and a variable temperature zone air outlet;
a freezing evaporator is arranged in the freezing area air inlet duct, and the freezing area air inlet duct part positioned at the downstream of the freezing evaporator is communicated with a freezing area air inlet; the air inlet duct part of the freezing area at the upstream is communicated with an air return duct;
cold air cooled by the freezing evaporator is sent into the freezing area through the air inlet of the freezing area, after heat exchange is carried out in the freezing area, parts enter the air inlet duct of the cold storage area through the air outlet of the freezing area, and parts enter the air inlet duct of the variable temperature area through the second air outlet of the freezing area;
cold air entering the air inlet duct of the cold storage area enters the cold storage area through the air inlet of the cold storage area, exchanges heat through the cold storage area and then enters the air outlet duct of the cold storage area through the air outlet of the cold storage area;
cold air entering the air inlet duct of the temperature varying region enters the temperature varying region through the air inlet of the temperature varying region, exchanges heat through the temperature varying region and then enters the air outlet duct of the temperature varying region through the air outlet of the temperature varying region;
the air outlet duct of the cold storage area and the air outlet duct of the variable temperature area are both connected with a return air duct, the air outlet of the air outlet duct of the cold storage area and the air outlet of the air outlet duct of the variable temperature area are mixed in the return air duct and then return to the air inlet duct of the freezing area, and the freezing evaporator continues to perform circulating refrigeration;
and the drain pipe is communicated with the air outlet of the variable temperature region or the air outlet duct of the variable temperature region or the air return duct.
Preferably, the inlet air of the cold storage area is arranged in the vertical direction or forms an acute angle with the vertical direction, and the inlet air of the temperature-variable area is arranged in the vertical direction or forms an acute angle with the vertical direction.
Preferably, the inlet air of the cold storage area is arranged to form an acute angle with the vertical direction within a range of not more than 45 degrees, and the inlet air of the temperature-variable area is arranged to form an acute angle with the vertical direction within a range of not more than 45 degrees.
Preferably, the air duct system further comprises at least heaters arranged on the temperature changing zone air inlet duct.
Preferably, the th heater is arranged on the side of the inlet air close to the temperature-changing area.
Preferably, a second heater is arranged on the side of the return air duct close to the freezing area inlet air duct.
Preferably, the drain pipe is arranged on the lower wall of a turning part of the temperature varying area air inlet duct close to the end of the temperature varying area and/or the lower wall of the temperature varying area air supply duct arranged in the horizontal direction.
Preferably, the drain pipe comprises a drain inserting pipe arranged on an air inlet duct of the variable temperature chamber and a drain inserting hole arranged on the return air channel.
The third aspect of the invention discloses kinds of multi-temperature-zone refrigerators, which adopt the multi-temperature-zone refrigerator air duct system of the above-mentioned any .
According to the invention, the defrosting water joint (drain pipe) is arranged between the air channels, so that the circulation of defrosting water in the refrigerator is realized, the residual frost at the air inlet of the refrigerator is effectively dissolved through the heater at the air channel part, and the frost adhering amount of the air is reduced by adjusting the installation position of the air .
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, the drawings described below are merely embodiments of the present disclosure, and other drawings may be derived therefrom by those of ordinary skill in the art without the exercise of inventive faculty.
FIG. 1 is a schematic view of various compartments and air paths on the back of an exemplary duct system;
FIG. 2 is a schematic view of the chambers and air paths on the front of the duct system of embodiment of the present invention;
FIG. 3 is a schematic diagram of the upper duct structure of the freezer compartment according to an embodiment of the invention ;
FIG. 4 is a schematic view of a return air duct and its associated components according to an embodiment of the present invention;
FIG. 5 is a schematic view of a drain of an embodiment of the invention;
FIG. 6 is a diagrammatic illustration of a variable temperature chamber supply air duct and drain pipe assembly of an embodiment of the present invention;
in the figure, 1-freezing zone, 2-freezing zone, 3-temperature-changing zone, 4-port of return air duct of the freezing zone, 5-freezing evaporator, 6-upper air duct of freezing chamber, 7-lower air duct of freezing chamber, 8-inlet air duct of the freezing zone, 9-inlet air duct of temperature-changing zone, 10-return air duct, 11-joint of return air duct, 12-drain pipe, 121-drainage plug, 122-drainage jack, 13-air duct of refrigerating chamber, 14-air duct of temperature-changing chamber, 15-fan of freezing chamber, 16-inlet air of the freezing zone, 17-inlet air of temperature-changing zone and 18-air chamber.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are partial embodiments of of the present invention, rather than all embodiments.
As used in this specification and the appended claims, the singular forms "", "the", and "the" are intended to include the plural forms as well, and "the" plurality " generally includes at least two, but does not exclude at least unless the context clearly indicates otherwise.
It should be understood that the term "and/or" is used herein only to describe kinds of association relationships that describe association objects, meaning that there may be three kinds of relationships, for example, a and/or B, and may mean that there are three cases of a alone, a and B together, and B alone.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises an series of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system.
In the existing refrigerator air duct, special parts such as the refrigerator air , the air duct elbow, the groove of the horizontal section of the air duct and the like are easy to frost, and the defrosted water is easy to accumulate in the positions, so that steps of improvement are needed for the air duct of the multi-temperature-zone refrigerator.
Example 1
As shown in FIGS. 1-6, in this embodiment, kinds of multi-temperature-zone refrigerator air duct systems are disclosed, the multi-temperature-zone includes a freezing zone 1, a refrigerating zone 2, and a variable-temperature zone 3 having a working temperature between the freezing zone and the refrigerating zone, a th drain pipe (not shown) is provided on a refrigerating-zone air duct 8 connected to an air inlet of the freezing zone and/or a variable-temperature-zone air duct provided with a second drain pipe (not shown) is provided, wherein the drain pipe is connected to an air outlet of the refrigerating zone or an air outlet duct of the refrigerating zone when a th drain pipe is provided, the second drain pipe is connected to the air outlet of the variable-temperature-zone or the air outlet duct of the variable-temperature-zone, the air outlet duct of the refrigerating zone is , and then connected to a return air duct, and the th drain pipe and the second drain pipe are connected to the return air duct.
In the embodiment, in order to reduce the frost amount of the wind and facilitate discharging of defrosted water through the first drain pipe and the second drain pipe, the inlet wind 16 of the cold storage area is arranged in the vertical direction or at an acute angle to the vertical direction, the inlet wind 17 of the temperature change area is arranged in the vertical direction or at an acute angle to the vertical direction, preferably, the inlet wind of the cold storage area is arranged at an acute angle to the vertical direction within a range of not more than 45 degrees, and the inlet wind of the temperature change area is arranged at an acute angle to the vertical direction within a range of not more than 45 degrees.
, the multi-temperature-zone refrigerator air duct system further comprises at least heaters (not shown) arranged on the temperature-varying-zone air inlet duct, wherein the arranged heaters can eliminate frost attached to the wind and the air inlet duct and convert the frost into defrosting water, so that a drain pipe is additionally arranged on the lower wall of the turning part of the air inlet duct and/or the lower wall of the air inlet duct arranged in the horizontal direction to discharge the defrosting water in the air inlet duct, the outlet of the drain pipe is connected to the air return duct of the air duct system, the defrosting water can be directly discharged to the bottom of the air inlet duct of the freezing zone communicated with the air return duct, preferably, the heater is arranged on the side of the air inlet duct close to the temperature varying zone, a small amount of frost near the wind is defrosted and discharged by using the heater, and frost accumulation in the existing air duct structure can be effectively solved.
The end of the return air duct near the freezing area inlet air duct is provided with a second heater, at this time, the accumulated water or ice collected in the return air duct near is treated by the second heater, and efficient circulation is formed.
In the embodiment, the drain pipe is arranged at the lower wall of the turn of the temperature changing zone air inlet duct close to the end of the temperature changing zone and/or the lower wall of the temperature changing zone air inlet duct arranged in the horizontal direction.
Example 2
As shown in fig. 1-6, based on the optimization of the duct system in embodiment 1, another embodiment of the present invention provides multi-temperature-zone refrigerator duct systems, wherein the multi-temperature zone includes a freezing zone 1, a cooling zone 2, and a temperature varying zone 3 having a working temperature between the freezing zone and the cooling zone, the duct system includes a freezing zone air intake duct, a cooling zone air intake duct 8, a cooling zone air outlet duct, a temperature varying zone air intake duct 9, a freezing zone air outlet duct, and a return air duct 10, the freezing zone is provided with a freezing zone air intake opening, a freezing zone air outlet, a freezing zone second air outlet, the cooling zone is provided with a cooling zone air intake opening and a cooling zone air outlet, the temperature varying zone air intake opening and a temperature varying zone air outlet, a freezing evaporator 5 is provided in the freezing zone air intake duct, the freezing zone air intake opening at the downstream of the freezing evaporator is partially communicated with the freezing zone air intake opening, the freezing zone air intake duct portion at the upstream is communicated with the return air duct, the freezing zone air intake opening is cooled by a cold air evaporator, and the cooling zone air is communicated with the freezing zone air intake opening through a temperature varying zone portion , and the cooling zone air intake opening is.
The cold air entering the air inlet duct of the cold storage area enters the cold storage area through the air inlet of the cold storage area, exchanges heat through the heat exchange of the cold storage area and then enters the air outlet duct of the cold storage area through the air outlet of the cold storage area. The cold air entering the air inlet duct of the temperature varying region enters the temperature varying region through the air inlet of the temperature varying region, exchanges heat through the temperature varying region and then enters the air outlet duct of the temperature varying region through the air outlet of the temperature varying region.
The air outlet duct of the cold storage area and the air outlet duct of the variable temperature area are both connected with the air return duct, the air outlet of the air outlet duct of the cold storage area and the air outlet of the air outlet duct of the variable temperature area are mixed in the air return duct and then return to the air inlet duct of the freezing area, and the freezing evaporator continues to perform circulating refrigeration. The variable temperature zone air inlet duct is provided with a drain pipe 12, and the drain pipe 12 is communicated with the variable temperature zone air outlet or the variable temperature zone air outlet duct or the return air duct.
In the embodiment, the inlet air 16 of the cold storage area is arranged in the vertical direction or at an acute angle with the vertical direction, the inlet air 17 of the variable temperature area is also arranged in the vertical direction or at an acute angle with the vertical direction, preferably, the inlet air of the cold storage area is arranged at an acute angle with the vertical direction within a range of not more than 45 degrees, and the inlet air of the variable temperature area is arranged at an acute angle with the vertical direction within a range of not more than 45 degrees, and the direction of an air port is improved based on the adjustment of the air , so that the air is not prone to frost formation, and after frost formation, the frost formation water can be discharged in time.
In the embodiment, the air duct system further comprises at least heaters arranged on the temperature-varying zone air inlet duct, and the structure of the cooling storage zone air inlet duct is not easy to frost compared with that of the temperature-varying zone air inlet duct, so that the air duct system can save energy and simplify the overall structure of the air duct, the heaters can be arranged on the temperature-varying zone air inlet duct only, preferably, the heater is arranged on the temperature-varying zone air inlet duct, wherein the temperature-varying zone air inlet duct is positioned between the air inlet and the temperature-varying zone, more preferably, the heater can be arranged near the air inlet aiming at the large frosting amount at the air , and the heater is used for defrosting and discharging a small amount of frosting near the air , so that the problem of frosting water accumulation in the existing air duct structure can be effectively solved.
The inlet air duct of the temperature changing area is close to the lower wall of the end of the temperature changing area and/or is arranged in the horizontal direction, and the outlet of the drain pipe is connected to the return air duct of the air duct system in drainage modes, so that the defrosting water can be directly discharged to the lower part of the inlet air duct of the freezing area connected with the return air duct, and the defrosting water can be conveniently discharged in time or left for other use.
The drain pipe is preferably arranged at the lower wall of a turning part of the temperature-changing zone air inlet duct close to end of the temperature-changing zone and/or the lower wall of the temperature-changing zone air supply duct arranged in the horizontal direction optional realization modes are that the drain pipe comprises a drain insertion pipe 121 arranged on the temperature-changing zone air inlet duct and a drain insertion hole 122 arranged on the return air duct, the drain insertion pipe 12 is designed to be similar to a funnel-shaped structure, meanwhile, a insertion hole is reserved at the end of the return air duct , a funnel-shaped tip part (the drain insertion pipe 121) is inserted and matched with the reserved hole (the drain insertion hole 122) to form the drain pipe 12, and the insertion hole is connected into the return air duct to accelerate water discharge by using air of the return air duct.
In the embodiment, the end of the return air duct close to the inlet air duct of the freezing area is provided with a second heater, and accumulated water or ice collected in the return air duct is heated by the second heater to form high-efficiency circulation.
For the return air ducts in the above embodiments 1 and 2, the connection between the outlet air duct of the cold storage area and the outlet air duct of the variable temperature area can achieve sufficient mixing of two return air with different temperatures, and can ensure of the temperature at the place where the refrigeration evaporator is arranged is returned, but in other embodiments, the outlet air duct of the cold storage area and the outlet air duct of the variable temperature area can be respectively connected to the inlet air duct of the refrigeration area, at this time, to ensure of the air temperatures in the two air ducts to be consistent, heaters are respectively arranged to heat up, so as to facilitate discharging of defrosting water in each outlet air duct, drain pipes arranged according to the air duct structure can also be connected to the corresponding outlet air ducts, and in other embodiments, paths of return air ducts of the refrigeration area can be additionally arranged after heat exchange of cold air in the refrigeration area, and connected to the inlet air duct of the refrigeration area provided with the refrigeration evaporator section, or mixed with the outlet air duct of the variable temperature area and the outlet air duct .
Example 3
As shown in figures 1-6, the invention also discloses kinds of multi-temperature-zone refrigerators, which adopt the air duct system of the above-mentioned anyn .
The refrigerator specifically comprises freezing chambers, refrigerating chambers, at least temperature-changing chambers, an air duct system for communicating the chambers and a freezing evaporator, wherein the freezing evaporator is arranged at the upstream of the air inlet duct of the freezing chamber.
The air duct system comprises: an upper air duct 6 of a freezing chamber and a lower air duct 7 of the freezing chamber (6 and 7 can be equivalent to an air duct of a freezing area) which are positioned in the freezing chamber, an air duct of a refrigerating chamber, an air duct of a temperature-changing chamber, an air duct 10 of a return air, a joint 11 of the air duct of the return air and a drain pipe 12 which are positioned in a foaming layer, an air duct 13 of the refrigerating chamber and an air duct 14 of the temperature-changing chamber which are positioned in.
The upper air duct 6 of the freezing chamber comprises a freezing chamber fan 15, refrigerating chamber inlet air , temperature-variable chamber inlet air and a formed air chamber 18, and the upper air duct 6 of the freezing chamber is respectively connected with the refrigerating chamber inlet air duct, the temperature-variable chamber inlet air duct and the lower air duct 7 of the freezing chamber.
The refrigerator comprises a temperature-variable chamber 3, a variable temperature chamber air outlet duct and a variable temperature chamber air outlet duct, wherein the back of the variable temperature chamber 3 is provided with an air return duct 10, the air return duct is integrated with an air outlet duct of the refrigerating chamber and an air outlet duct of the variable temperature chamber, the end of the air outlet duct of the refrigerating chamber is communicated with an air outlet of the refrigerating chamber, the end of the variable temperature chamber air return duct is communicated with a return air inlet of the variable temperature chamber, the end 4 of the air outlet duct of the refrigerating chamber and the other end of the air outlet duct of the variable temperature chamber are converged into channels and communicated with the bottom of a freezing chamber air inlet duct provided with a freezing chamber evaporator through the downstream end of the air return duct, the air return duct is.
The cold storage room air inlet and the variable temperature room air inlet are devices for controlling the air volume and the air speed entering the corresponding air channels, and the devices are vertically or slightly inclined in the air channels so as to be beneficial to defrosting and controlling the air volume.
The return air duct 10 is similar to a three-way joint, attached to a foaming layer on the back of the temperature-changing chamber, and respectively connected with the bottom of the refrigerating chamber above the return air duct, the bottom of the temperature-changing chamber in front of the return air duct and the return air duct joint 11. Meanwhile, a drain plug 121 arranged in an air supply duct of the temperature-changing chamber is matched with a drain jack 122 arranged at the upper part of the member to form a drain pipe 12.
The drain pipe 12 is a pipe piece which is connected with the air inlet duct and the air return duct 10 of the variable-temperature chamber to realize the flow of defrosting water between the ducts, when residual ice in the air inlet duct of the variable-temperature chamber is melted into liquid state by the operation of a compensating heater, water flows into the air return duct 10 through the drain joint and finally flows back to the bottom of the freezing chamber through the slope in the air return duct 10 to realize the circulation of the defrosting water.
And compensation heaters are attached to the air inlet duct and the air return duct joint 11 of the temperature-changing chamber and used for controlling the temperature of the air supply duct of the temperature-changing chamber and heating and melting the attached residual ice.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (10)

  1. The air duct system of the refrigerator with the multiple temperature zones comprises a freezing zone, a refrigerating zone and a variable temperature zone with working temperature between the freezing zone and the refrigerating zone, and is characterized in that an air inlet duct of the refrigerating zone connected with an air inlet of the refrigerating zone is provided with a th drain pipe and/or an air inlet duct of the variable temperature zone connected with an air inlet of the variable temperature zone is provided with a second drain pipe, when the th drain pipe is arranged, the drain pipe is connected with an air outlet of the refrigerating zone or the inside of an air outlet duct of the refrigerating zone, and when the second drain pipe is arranged, the second drain pipe is connected with an air outlet of the variable temperature zone or the inside of the air outlet duct of the variable temperature.
  2. 2, kinds of multi-temperature zone refrigerator air duct system, the said multi-temperature zone includes freezing zone, cold storage zone and variable temperature zone with working temperature between the freezing zone and cold storage zone, it is characterized in that,
    the air duct system comprises a freezing area air inlet duct, a cold storage area air outlet duct, a variable temperature area air inlet duct, a variable temperature area air outlet duct and a return air duct;
    the freezing area is provided with a freezing area air inlet, a freezing area th air outlet and a freezing area second air outlet;
    the cold storage area is provided with a cold storage area air inlet and a cold storage area air outlet;
    the variable temperature zone is provided with a variable temperature zone air inlet and a variable temperature zone air outlet;
    a freezing evaporator is arranged in the freezing area air inlet duct, and the freezing area air inlet duct part positioned at the downstream of the freezing evaporator is communicated with a freezing area air inlet; the air inlet duct part of the freezing area at the upstream is communicated with an air return duct;
    cold air cooled by the freezing evaporator is sent into the freezing area through the air inlet of the freezing area, after heat exchange is carried out in the freezing area, parts enter the air inlet duct of the cold storage area through the air outlet of the freezing area, and parts enter the air inlet duct of the variable temperature area through the second air outlet of the freezing area;
    cold air entering the air inlet duct of the cold storage area enters the cold storage area through the air inlet of the cold storage area, exchanges heat through the cold storage area and then enters the air outlet duct of the cold storage area through the air outlet of the cold storage area;
    cold air entering the air inlet duct of the temperature varying region enters the temperature varying region through the air inlet of the temperature varying region, exchanges heat through the temperature varying region and then enters the air outlet duct of the temperature varying region through the air outlet of the temperature varying region;
    the air outlet duct of the cold storage area and the air outlet duct of the variable temperature area are both connected with a return air duct, the air outlet of the air outlet duct of the cold storage area and the air outlet of the air outlet duct of the variable temperature area are mixed in the return air duct and then return to the air inlet duct of the freezing area, and the freezing evaporator continues to perform circulating refrigeration;
    and the drain pipe is communicated with the air outlet of the variable temperature region or the air outlet duct of the variable temperature region or the air return duct.
  3. 3. The air duct system for the multi-temperature-zone refrigerator according to claim 1 or 2, wherein the air inlet of the cooling zone is arranged in a vertical direction or at an acute angle to the vertical direction, and the air inlet of the temperature-variable zone is arranged in a vertical direction or at an acute angle to the vertical direction.
  4. 4. The air duct system for multi-temperature-zone refrigerator according to claim 3, wherein the air supply of the cooling zone is arranged to be at an acute angle with respect to the vertical direction within a range of 45 °, and the air supply of the temperature-variable zone is arranged to be at an acute angle with respect to the vertical direction within a range of 45 °.
  5. 5. The air duct system for multi-temperature-zone refrigerators according to claim 4, further comprising at least heaters disposed on the inlet air duct of the temperature varying zone.
  6. 6. The multi-temperature zone refrigerator duct system of claim 5, wherein the -th heater is disposed on the side of the intake air near the temperature-variable zone.
  7. 7. The air duct system for multi-temperature-zone refrigerators according to claim 6, wherein a second heater is provided on the side of the return air duct adjacent to the inlet air duct for the freezing zone.
  8. 8. The air duct system for refrigerators with multiple temperature zones of claim 7, wherein the water discharge pipe is disposed at a lower wall of a turn of the inlet air duct for variable temperature zone near the end of the variable temperature zone and/or a lower wall of the inlet air duct for variable temperature zone disposed in a horizontal direction.
  9. 9. The multi-temperature zone refrigerator duct system of claim 8, wherein the drain pipe comprises a drain insertion pipe disposed on the variable temperature chamber inlet duct and a drain insertion hole disposed on the return air channel.
  10. 10, kinds of multi-temperature zone refrigerator, characterized in that, the refrigerator adopts the multi-temperature zone refrigerator air duct system of any of claims 1-9.
CN201911090309.3A 2019-11-08 2019-11-08 Multi-temperature-zone refrigerator air duct system and multi-temperature-zone refrigerator Pending CN110736292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911090309.3A CN110736292A (en) 2019-11-08 2019-11-08 Multi-temperature-zone refrigerator air duct system and multi-temperature-zone refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911090309.3A CN110736292A (en) 2019-11-08 2019-11-08 Multi-temperature-zone refrigerator air duct system and multi-temperature-zone refrigerator

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CN110736292A true CN110736292A (en) 2020-01-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113899160A (en) * 2021-11-03 2022-01-07 青岛海尔电冰箱有限公司 Control method of refrigeration equipment
WO2022142351A1 (en) * 2020-12-31 2022-07-07 Tcl家用电器（合肥）有限公司 Air return duct heating control device and heating control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022142351A1 (en) * 2020-12-31 2022-07-07 Tcl家用电器（合肥）有限公司 Air return duct heating control device and heating control method
CN113899160A (en) * 2021-11-03 2022-01-07 青岛海尔电冰箱有限公司 Control method of refrigeration equipment

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