CN115479436A - Air duct assembly, refrigerator and control method of refrigerator - Google Patents

Abstract

The invention provides an air duct assembly, a refrigerator with the air duct assembly and a control method of the air duct assembly, wherein the air duct assembly comprises a first air duct with a first air inlet, a second air duct with a second air inlet, a first fan arranged in the first air duct and a second fan arranged in the second air duct, the first air inlet is positioned on an air inlet path of the second air inlet, and the plane where the second air inlet is positioned on the rear side of the plane where the first air inlet is positioned; the influence of the first fan on the second fan can be reduced, the first fan is prevented from influencing the air suction volume of the second fan, namely, part of cold air coming out of the evaporator chamber directly enters the second air inlet under the action of the suction force of the second fan, and the influence of the suction force of the first fan cannot be caused.

Description

Air duct assembly, refrigerator and control method of refrigerator

Technical Field

The invention relates to the field of refrigerating devices, in particular to an air duct assembly, a refrigerator and a control method of the air duct assembly.

Background

With the development of society, people have higher and higher requirements on the quality of life. Among them, the diversification and individuation requirements of people for food storage in home life are getting stronger, and therefore, a refrigerator with a temperature-variable chamber is produced, and the temperature in the temperature-variable chamber of the refrigerator can be independently adjusted to meet the requirements of users for storing various articles.

The existing refrigerator with a temperature-changing chamber generally adopts a multi-refrigeration system or a single-system multi-air door to realize corresponding functions. For a refrigerator with multiple refrigeration systems, electromagnetic valves need to be arranged to switch among the multiple refrigeration systems to respectively supply cold to each refrigeration compartment, simultaneous refrigeration of the multiple refrigeration compartments cannot be realized, and the multiple evaporators occupy storage space of the refrigerator, so that the storage space of the refrigerator is reduced, and the cost is increased. For the single-system multi-air door variable temperature refrigerator, the air door corresponding to the variable temperature chamber needs to be set to be larger so as to meet the function of variable temperature of the full temperature zone, which is not beneficial to the layout of the air duct.

In view of the above, it is desirable to provide a new air duct assembly, a refrigerator and a control method thereof to solve the above problems.

Disclosure of Invention

The invention aims to provide an air duct assembly, a refrigerator and a control method of the air duct assembly.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an air duct assembly, includes the first wind channel that has first air intake, has the second wind channel of second air intake, locates first fan in the first wind channel, locate second fan in the second wind channel, first air intake is located on the air inlet route of second air intake, just the plane at second air intake place is located the planar rear side at first air intake place.

As a further improved technical solution of the present invention, the air duct assembly includes a rear cover plate, and the first air inlet and the second air inlet are both disposed on the rear cover plate.

As a further improved technical solution of the present invention, the second fan includes a volute fixed on the rear cover plate, and a fan body fixed on the volute, and the volute and the rear cover plate form the second air duct.

As a further improved technical solution of the present invention, the air duct assembly includes a front cover plate, a rear cover plate matched with the front cover plate, and a heat insulation plate located between the front cover plate and the rear cover plate, a first accommodating cavity for accommodating the first fan and a second accommodating cavity for accommodating the second fan are formed between the heat insulation plate and the rear cover plate, the front cover plate is provided with a plurality of air outlets, and the first air duct communicates the first accommodating cavity and the plurality of air outlets.

As a further improved technical solution of the present invention, along the arrangement direction of the first accommodating chamber and the second accommodating chamber, the plurality of air outlets include a first air outlet and a second air outlet which are located at two opposite sides of the first accommodating chamber, and the first air duct includes a first sub-air duct communicating the first accommodating chamber with the first air outlet and a second sub-air duct communicating the first accommodating chamber with the second air outlet.

As a further improved technical scheme of the invention, the first air outlet is positioned at the side of the second accommodating cavity; the heat insulation plate comprises a rear heat insulation plate matched with the rear cover plate and a front heat insulation plate which is arranged to surround the rear heat insulation plate to form the first sub-air duct; the rear heat insulation plate is provided with a communication opening for communicating the first accommodating cavity with the first sub-air duct.

According to the technical scheme for further improvement of the invention, a flow guide strip is convexly arranged on one side of the rear heat insulation plate opposite to the front heat insulation plate, and the front end of the flow guide strip is positioned on the front side of the plane where the front periphery of the communication opening is positioned.

As a further improved technical scheme of the invention, the air duct assembly further comprises an air door used for controlling the on-off of the second air duct.

In order to achieve the above object, the present invention further provides a refrigerator, which includes a first refrigeration compartment, a second refrigeration compartment, a refrigeration system for providing refrigeration capacity to the first refrigeration compartment and the second refrigeration compartment, and the air duct assembly for conveying the refrigeration capacity generated by the refrigeration system to the first refrigeration compartment and the second refrigeration compartment, wherein the first air duct is communicated with the first refrigeration compartment, and the second air duct is communicated with the second refrigeration compartment.

In order to achieve the above object, the present invention further provides a control method for controlling the refrigerator, comprising the steps of:

when the second refrigeration chamber needs to refrigerate and the first refrigeration chamber does not need to refrigerate, the compressor and the second fan are controlled to start, and meanwhile, the first fan is controlled to run at a preset low speed.

As a further improved technical solution of the present invention, after "controlling the compressor and the second fan to start, and simultaneously controlling the first fan to operate at a preset low speed", the control method of the refrigerator further comprises the following steps:

and judging whether the temperature in the first refrigerating chamber is lower than a preset temperature, if so, controlling the compressor to stop, and continuously operating the first fan and the second fan until the first refrigerating chamber reaches the starting temperature or the second refrigerating chamber reaches the shutdown temperature.

The invention has the beneficial effects that: in the air duct assembly, the second air inlet is arranged behind the first air inlet, so that the influence of the first fan on the second fan can be reduced, the influence of the first fan on the air suction quantity of the second fan is prevented, namely, part of cold air from the evaporator chamber directly enters the second air inlet under the action of the suction force of the second fan and cannot be influenced by the suction force of the first fan.

Drawings

FIG. 1 is a schematic view of the air duct assembly of the present invention.

FIG. 2 is a schematic view of another angle of the air duct assembly shown in FIG. 1.

Fig. 3 is a schematic structural view of the rear cover plate of fig. 1, which is provided with the first fan and the second fan.

Fig. 4 is an exploded view of the second fan and the back cover plate of fig. 3.

FIG. 5 is a schematic view of another angle of the air duct assembly shown in FIG. 1.

Fig. 6 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 5.

Fig. 7 is a flowchart of a control method of a refrigerator in the present invention.

Detailed Description

The present invention will be described in detail with reference to the embodiments shown in the drawings, and reference is made to fig. 1 to 7, which are preferred embodiments of the present invention. It should be noted that these embodiments are not intended to limit the present invention, and those skilled in the art should be able to make functional, methodical, or structural equivalents or substitutions according to these embodiments without departing from the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 6, the present invention provides an air duct assembly 10, where the air duct assembly 10 is applied to a refrigerator and is used to respectively transmit cooling energy generated by a refrigeration system in the refrigerator to each refrigeration compartment of the refrigerator.

The refrigerating system (not shown) comprises a compressor, a condenser, capillary tubes and evaporators which are connected end to end through pipelines, the evaporators are arranged in an evaporator chamber, and the air channel assembly 10 comprises an air channel communicated with the evaporator chamber and each refrigerating chamber, so that cold energy in the evaporator chamber is conveyed to each refrigerating chamber through the air channel.

The duct assembly 10 is specifically described below as an example of the duct assembly for supplying cooling energy to the temperature-variable chamber and the refrigerating chamber disposed side by side with the temperature-variable chamber. It should be noted that the technical spirit involved in the embodiments described below may be alternatively applied to other forms of refrigerators, such as a refrigerator having three or more cooling compartments.

The air channel assembly 10 comprises a first air channel 1 used for communicating an evaporator chamber with the temperature-changing chamber, a first fan 2 arranged in the first air channel 1, a second air channel 3 used for communicating the evaporator chamber with the refrigerating chamber and a second fan 4 arranged in the second air channel 3, the first fan 2 is controlled to be started, cold energy in the evaporator chamber is conveyed to the temperature-changing chamber to be refrigerated, the second fan 4 is controlled to be started, and the cold energy in the evaporator chamber is conveyed to the refrigerating chamber to be refrigerated.

Specifically, referring to fig. 2, the first air duct 1 has a first air inlet 11 communicated with the evaporator chamber, the second air duct 3 has a second air inlet 31 communicated with the evaporator chamber, and the first air inlet 11 is located on an air inlet path of the second air inlet 31, on one hand, the first air inlet 11 is located close to the evaporator chamber, so as to provide more cooling capacity to the temperature-changing chamber, and facilitate adjusting the temperature of the temperature-changing chamber; simultaneously can prevent the evaporimeter room from influencing the temperature in the freezer, on the other hand, the comdenstion water that the freezer produced is more, is located second air intake 31 department the second fan 4 is far away from the evaporimeter room, can avoid the second fan 4 outlet to take place ice stifled because of the cold volume of evaporimeter room.

In one embodiment, the evaporator chamber is located at the bottom, and the second air inlet 31 is located at the upper side of the first air inlet 11.

Specifically, as shown in fig. 1 and fig. 2, the air duct assembly 10 includes a front cover plate 5 and a rear cover plate 6 matched with the front cover plate 5, the first air duct 1 and the second air duct 3 are located between the front cover plate 5 and the rear cover plate 6, the first air inlet 11 and the second air inlet 31 are both disposed on the rear cover plate 6, the first fan 2 is fixed on the rear cover plate 6 at a position corresponding to the first air inlet 11, and the second fan 4 is fixed on the rear cover plate 6 at a position corresponding to the second air inlet 31, so that the internal structure of the air duct assembly 10 can be simplified, and the assembly is facilitated.

Further, the plane where the second air inlet 31 is located at the rear side of the plane where the first air inlet 11 is located, so that the influence of the first fan 2 on the second fan 4 can be reduced, and the influence of the first fan 2 on the suction amount of the second fan 4 is prevented, that is, part of cold air coming out of the evaporator chamber directly enters the second air inlet 31 under the action of the suction force of the second fan 4, and is not influenced by the suction force of the first fan 2.

Specifically, referring to fig. 3 to 4, the second fan 4 includes a volute 41 and a fan body 42 fixed on the volute 41, the rear cover plate 6 has a volute portion matching with the volute 41, and the second fan 4 is fixed on the rear cover plate 6 by fixing the volute 41 on the rear cover plate 6.

After the second fan 4 is fixed on the rear cover plate 6, the volute 41 and the volute part together form the second air duct 3, which is beneficial to guiding the flow of cold air, and the second air duct 3 and the first air duct 1 are arranged in a heat-insulating manner, so that the temperature between the first air duct 1 and the second air duct 3 can be prevented from being influenced mutually.

Specifically, the second air inlet 31 is disposed on the volute portion.

It can be understood that the air outlet of the second air duct 3 is located on the side wall of the rear cover plate 6, so as to guide the cold air to flow into the refrigerating chamber.

Further, the air duct assembly 10 further includes an air door (not shown) disposed in the second air duct 3, and the temperature in the refrigerating chamber can be adjusted by controlling the second fan 4 and the air door, and the temperature in the variable temperature chamber can be adjusted by controlling the first fan 2, so that the temperature of the variable temperature chamber can be adjusted between larger temperature regions.

Further, referring to fig. 5 to 6, the air duct assembly 10 further includes a heat insulation plate 7 located between the front cover plate 5 and the rear cover plate 6, a first receiving cavity for receiving the first fan 2 and a second receiving cavity for receiving the second fan 4 are formed between the heat insulation plate 7 and the rear cover plate 6, and the first receiving cavity and the second receiving cavity are insulated from each other by the heat insulation plate 7, so that the mutual influence between the first air duct 1 and the second air duct 3 can be reduced. Meanwhile, the heat insulation plate 7 can separate the evaporator chamber, the air channel and the temperature changing chamber from each other to prevent the evaporator chamber and/or the air channel from influencing the temperature in the temperature changing chamber.

Furthermore, a plurality of air outlets are formed in the front cover plate 5, and the first air duct 1 is communicated with the first accommodating cavity and the plurality of air outlets, namely, the plurality of air outlets in the front cover plate 5 are used for providing cold energy for the temperature changing chamber, so that the air duct assembly and the refrigerator can be assembled conveniently.

Further, along the arrangement direction of the first accommodating cavity and the second accommodating cavity, the plurality of air outlets include a first air outlet 51 and a second air outlet 52 which are positioned on two opposite sides of the first accommodating cavity, so that the distribution of the air outlet in the variable temperature chamber is relatively uniform, and the temperature in the variable temperature chamber is relatively uniform.

Correspondingly, the first air duct 1 includes a first sub-air duct 12 communicating the first accommodating cavity with the first air outlet 51, and a second sub-air duct 13 communicating the first accommodating cavity with the second air outlet 52, that is, the cool air entering the first accommodating cavity is divided into two paths, and enters the temperature varying chamber from the first sub-air duct 12 and the second sub-air duct 13 respectively.

In this embodiment, the first air outlet 51 is located at a side where the second accommodating cavity is located, i.e. an upper side, and the cold air coming out through the first sub-air duct 12 is blown out from the upper side of the temperature-changing chamber to provide cold energy to the temperature-changing chamber; the second air outlet 52 is located on one side, i.e. the lower side, of the first accommodating cavity far away from the second accommodating cavity, and the cold air coming out through the second sub-air duct 13 is blown out from the lower side of the temperature-changing chamber to provide cold energy for the temperature-changing chamber.

Specifically, the heat insulation board 7 includes a rear heat insulation board 71 which surrounds the rear cover plate 6 to form the first receiving cavity and the second receiving cavity, and a front heat insulation board 72 which surrounds the rear heat insulation board 71 to form the first sub-duct 12; the rear heat insulating plate 71 has a communication port 711 communicating the first receiving chamber with the first sub-air duct 12, so that the first receiving chamber is communicated with the first sub-air duct 12, and cool air in the first receiving chamber can enter the first sub-air duct 12 through the communication port 711.

Meanwhile, the first air outlet 51 is located at a position on the front cover plate 5 corresponding to upper and lower ends of the front heat insulation plate 72, the rear heat insulation plate 71 has a groove for placing the front heat insulation plate 72, and the front heat insulation plate 72 and the groove together form the first sub-air passage 12, that is, the first sub-air passage 12 and the temperature-varying chamber are separated by the front heat insulation plate 72, so that the temperature-varying chamber and the first sub-air passage 12 can be prevented from being influenced by each other.

Furthermore, a flow guide strip 712 is convexly arranged on one side of the rear heat insulation plate 71 opposite to the front heat insulation plate 72, and the front end of the flow guide strip 712 is located on the front side of the plane where the front periphery of the communication port 711 is located, so that water condensed after contacting the flow guide strip 712 from the water vapor flowing back to the temperature change chamber in the first sub-air duct 12 at the first air outlet 51 cannot drop into the first accommodating cavity, and the water stored in the first fan 2 can be prevented from being frozen to influence the operation of the first fan 2.

Further, the second sub-air duct 13 is formed in the heat insulation board 7 on the side of the first receiving cavity far away from the second receiving cavity, so that the second sub-air duct 13 and the temperature change chamber can be prevented from being influenced with each other.

Further, the invention also provides a refrigerator (not shown in the figure), which comprises a first refrigerating chamber, a second refrigerating chamber, a refrigerating system for providing cold energy for the first refrigerating chamber and the second refrigerating chamber, and an air duct assembly 10 for conveying the cold energy generated by the refrigerating system into the first refrigerating chamber and the second refrigerating chamber, wherein the first air duct 1 is communicated with the first refrigerating chamber, and the second air duct 3 is communicated with the second refrigerating chamber.

It is understood that the first refrigeration compartment may be the temperature change compartment and the second refrigeration compartment may be the refrigeration compartment; of course, this is not a limitation.

The specific structure of the air duct assembly 10 is as described above, and is not described herein again.

The air duct assembly 10 is arranged at the rear side of the first refrigerating chamber, so that the storage space of the second refrigerating chamber can be enlarged, and the problem that a user has a large demand on the space of the second refrigerating chamber serving as a refrigerating chamber is solved.

Specifically, a guide air duct which is butted with an air outlet of the second air duct 3 penetrates through a heat insulation layer (not shown) of the refrigerating chamber, a refrigerating air outlet is arranged on a refrigerating liner of the refrigerating chamber, and the guide air duct is communicated with the refrigerating air outlet and the second air duct 3 so as to guide cold air in the second air duct 3 into the refrigerating chamber and provide cold energy for the refrigerating chamber.

Further, referring to fig. 7, the present invention further provides a control method for controlling the refrigerator, where the control method for the refrigerator includes the following steps:

when the second refrigeration chamber needs to refrigerate and the first refrigeration chamber does not need to refrigerate, the compressor and the second fan 4 are controlled to start, and meanwhile, the first fan 2 is controlled to run at a preset low speed.

Specifically, "controlling the compressor and the second fan 4 to start" specifically includes controlling the compressor to start, and controlling the second fan 4 to start at a rotation speed set in the cooling mode, so as to provide cooling capacity to the second cooling compartment.

When the second fan 4 is started to convey the cold energy of the evaporator chamber to the second refrigerating chamber, the first fan 2 runs at a preset low speed, so that the air in the first air channel 1 flows towards the first refrigerating chamber, the return air in the second refrigerating chamber cannot flow through the first fan 2 and the second fan 4 through the first air channel 1 even if entering the first refrigerating chamber through the return air channel of the first refrigerating chamber, and the first fan 2 and the second fan 4 can be prevented from condensing to cause path sealing blockage.

In one embodiment, the predetermined low speed is 800rpm. Of course, this is not a limitation.

Further, after the "controlling the compressor and the second fan 4 to start and simultaneously controlling the first fan 2 to operate at the preset low speed", the control method of the refrigerator further comprises the following steps:

and judging whether the temperature in the first refrigerating chamber is lower than a preset temperature, if so, controlling the compressor to stop, and continuously operating the first fan 2 and the second fan 4 until the first refrigerating chamber reaches the starting temperature or the second refrigerating chamber reaches the shutdown temperature.

It can be understood that when the first fan 2 operates at the preset low speed, part of the cooling capacity in the evaporator chamber can still be provided to the first refrigeration chamber to cool the first refrigeration chamber, so that the temperature in the first refrigeration chamber needs to be acquired at any time to judge whether the first refrigeration chamber is too cold, that is, when the temperature in the first refrigeration chamber is lower than the preset temperature, the temperature in the first refrigeration chamber is too cold. At this moment, the compressor is controlled to stop, even if the first fan 2 continuously operates, cold energy cannot be provided for the first refrigerating chamber, and food materials in the first refrigerating chamber are prevented from being frozen.

The phrase "the first fan 2 and the second fan 4 continuously operate" specifically means that the first fan 2 continuously operates at a preset low rotation speed, and the second fan 4 continuously operates at a rotation speed set in a cooling mode.

When the compressor is stopped, the first fan 2 continuously operates, return air with lower temperature in the first refrigerating chamber can be circulated to the evaporator chamber, the second fan 4 continuously operates, the return air with lower temperature circulated to the evaporator chamber can be conveyed to the second refrigerating chamber, and therefore cold energy in the first refrigerating chamber can be provided for the second refrigerating chamber to cool the second refrigerating chamber.

After the first refrigerating chamber reaches the starting temperature, the compressor is controlled to start, the first fan 2 operates at the set rotating speed in the refrigerating mode to refrigerate the first refrigerating chamber, and the second fan 4 operates at the set rotating speed in the refrigerating mode to refrigerate the second refrigerating chamber; or after the second refrigeration compartment reaches the shutdown temperature, the first fan 2 and the second fan 4 are controlled to stop.

It can be understood that when the first refrigeration compartment needs to be refrigerated and the second refrigeration compartment does not need to be refrigerated, the compressor and the first fan 2 can be controlled to be started, and the damper is controlled to close the second air duct 3, so that only the first refrigeration compartment is provided with the refrigeration.

When the first refrigeration chamber and the second refrigeration chamber need to refrigerate, the compressor is controlled to be started, and the first fan 2 and the second fan 4 operate at the set rotating speed in the refrigeration mode.

In summary, in the air duct assembly 10 of the present invention, the second air inlet 31 is disposed at a position behind the first air inlet 11, so that the influence of the first fan 2 on the second fan 4 can be reduced, and the influence of the first fan 2 on the suction flow of the second fan 4 can be prevented, that is, part of the cold air from the evaporator chamber directly enters the second air inlet 31 under the suction force of the second fan 4, and is not influenced by the suction force of the first fan 2.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (11)

1. The utility model provides an air duct assembly, includes the first wind channel that has first air intake, has the second wind channel of second air intake which characterized in that: the air duct assembly further comprises a first fan arranged in the first air duct and a second fan arranged in the second air duct, the first air inlet is located on an air inlet path of the second air inlet, and the plane where the second air inlet is located on the rear side of the plane where the first air inlet is located.

2. The air duct assembly of claim 1, wherein: the air duct assembly comprises a rear cover plate, and the first air inlet and the second air inlet are formed in the rear cover plate.

3. The air duct assembly of claim 2, wherein: the second fan comprises a volute fixed on the rear cover plate and a fan body fixed on the volute, and the volute and the rear cover plate form the second air duct.

4. The air duct assembly of claim 1, wherein: the air duct assembly comprises a front cover plate, a rear cover plate matched with the front cover plate and a heat insulation plate located between the front cover plate and the rear cover plate, a first accommodating cavity used for accommodating the first fan and a second accommodating cavity used for accommodating the second fan are formed between the heat insulation plate and the rear cover plate, a plurality of air outlets are formed in the front cover plate, and the first air duct is communicated with the first accommodating cavity and the plurality of air outlets.

5. The air duct assembly of claim 4, wherein: the air outlets comprise a first air outlet and a second air outlet which are positioned at two opposite sides of the first accommodating cavity, and the first air duct comprises a first sub-air duct communicated with the first accommodating cavity and the first air outlet and a second sub-air duct communicated with the first accommodating cavity and the second air outlet.

6. The air duct assembly of claim 5, wherein: the first air outlet is positioned at the side of the second accommodating cavity; the heat insulation plate comprises a rear heat insulation plate matched with the rear cover plate and a front heat insulation plate which is arranged to surround the rear heat insulation plate to form the first sub-air duct; the rear heat insulation plate is provided with a communication opening for communicating the first accommodating cavity with the first sub-air duct.

7. The air duct assembly of claim 6, wherein: and one side of the rear heat insulation plate opposite to the front heat insulation plate is convexly provided with a flow guide strip, and the front end of the flow guide strip is positioned on the front side of the plane where the front periphery of the communication port is positioned.

8. The air duct assembly of claim 1, wherein: the air duct assembly further comprises an air door used for controlling the second air duct to be opened and closed.

9. A refrigerator comprises a first refrigerating chamber, a second refrigerating chamber, a refrigerating system for providing cold quantity for the first refrigerating chamber and the second refrigerating chamber, and an air duct assembly for conveying the cold quantity generated by the refrigerating system to the first refrigerating chamber and the second refrigerating chamber; the method is characterized in that: the air duct assembly as claimed in any one of claims 1 to 8, wherein the first air duct is in communication with the first refrigerating compartment, and the second air duct is in communication with the second refrigerating compartment.

10. A control method of controlling the refrigerator of claim 9, characterized in that: the control method of the refrigerator comprises the following steps:

when the second refrigeration chamber needs refrigeration and the first refrigeration chamber does not need refrigeration, the compressor and the second fan are controlled to be started, and meanwhile, the first fan is controlled to run at a preset low speed.

11. The control method of a refrigerator as claimed in claim 10, wherein: after the compressor and the second fan are controlled to be started and the first fan is controlled to run at a preset low speed, the control method of the refrigerator further comprises the following steps:

and judging whether the temperature in the first refrigerating chamber is lower than a preset temperature, if so, controlling the compressor to stop, and continuously operating the first fan and the second fan until the first refrigerating chamber reaches the starting temperature or the second refrigerating chamber reaches the shutdown temperature.

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