WO2022111669A1

WO2022111669A1 - Refrigerator

Info

Publication number: WO2022111669A1
Application number: PCT/CN2021/133772
Authority: WO
Inventors: 陈�胜; 孙彬; 王国庆; 李腾昌; 程德彬
Original assignee: 海信容声(广东)冰箱有限公司
Priority date: 2020-11-27
Filing date: 2021-11-27
Publication date: 2022-06-02
Also published as: CN114562847A

Abstract

The present disclosure provides a refrigerator, comprising: a refrigerator compartment provided with a refrigerating heater and a refrigerating temperature-controlled switch, and a freezer compartment provided with a freezing temperature-controlled switch. The refrigerating temperature-controlled switch, the freezing temperature-controlled switch, and the refrigerating heater are connected in series to form a circuit for temperature compensation. When the temperature of the refrigerator compartment is lower than a second refrigerating temperature and when the temperature of the freezer compartment is higher than a first freezing temperature, the refrigerating temperature-controlled switch and the freezing temperature-controlled switch are both closed, and the refrigerating heater performs heating. By means of the configuration of the present invention, room temperature food placed in the freezer compartment can be sensed in a timely manner, and rapidly refrigerated and cooled; moreover, when the freezer compartment is rapidly cooled, the refrigerator compartment is in a state that the refrigerating capacity is substantially equivalent to the hating capacity, and the temperature of the refrigerator compartment is substantially kept constant, so that the refrigerator compartment is prevented from being excessively low in temperature or negative in temperature due to long-time refrigeration of a freezing requirement; in addition, the case that slow refrigeration is caused by the heating performed by the refrigerating heater when refrigeration is required in the refrigerator compartment can be avoided, such that the preservation quality of food in the refrigerator compartment is ensured, and the energy-saving purpose is achieved.

Description

refrigerator

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure claims the priority of the Chinese patent application with the application number 202011361118.9 and the invention titled refrigerator filed with the China Patent Office on November 27, 2020, the entire contents of which are incorporated herein by reference.

technical field

The present disclosure relates to the technical field of household appliances, and in particular, to a refrigerator.

Background technique

With the continuous improvement of people's living standards, household appliances are gradually moving towards the development direction of diversified functions, high quality and high cost performance. Refrigerator is one of the most common household appliances.

SUMMARY OF THE INVENTION

Some embodiments of the present disclosure provide a refrigerator, comprising: a refrigerating chamber, which is surrounded by a refrigerating inner tank; a freezing chamber, which is surrounded by a refrigerating inner tank; a refrigerating heater, which is arranged in the refrigerating chamber; When the temperature of the refrigerating chamber T _C is higher than the first refrigerating temperature T _C1 , the refrigerating temperature control switch is turned off; when the temperature T _C of the refrigerating chamber is lower than the second refrigerating temperature T _C2 , the refrigerating temperature control switch is closed; wherein, T _C1 > _T _C2 ; the freezing temperature control switch is set in the freezing chamber; when the freezing chamber temperature TD is higher than the first freezing temperature _TD1 , the freezing temperature control switch is closed; when the freezing chamber temperature _TD is lower than the second freezing temperature _TD2 When the temperature control switch for freezing is disconnected; among them, T _D1 > T _D2 ; the temperature control switch for refrigeration, the temperature control switch for freezing and the heater for refrigeration are connected in series to form a temperature compensation electric circuit; when the _temperature of the refrigerator room is lower than the first When the refrigerating temperature T _C2 and the freezing chamber temperature _{TD is higher than the first freezing temperature T D1} _, both the refrigerating temperature control switch and the freezing temperature control switch are closed, the electric circuit for temperature compensation is turned on, and the refrigerating heater is heated.

Description of drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present disclosure, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic diagram of the overall structure of a refrigerator according to some embodiments;

2 is a schematic diagram of an internal structure of a refrigerator according to some embodiments;

3 is a schematic diagram of the overall structure of a refrigerator according to some embodiments;

4 is a schematic diagram of an internal structure of a refrigerator according to some embodiments;

5 is a schematic diagram of an electrical circuit for temperature compensation of a refrigerator according to some embodiments;

FIG. 6 is a control flow diagram of a refrigerator compartment of a refrigerator according to some embodiments;

FIG. 7 is a flowchart of a freezer compartment control of a refrigerator according to some embodiments.

In the above figures: refrigerator 1; box 2; refrigerating chamber 3; freezing chamber 4; refrigerating inner tank 5;

Detailed ways

The present disclosure will be further described below in conjunction with specific embodiments, so that those skilled in the art can better understand the present disclosure and implement it, but the scope of protection required by the present disclosure is not limited to the scope described in the specific embodiments. . It should be noted that the embodiments of the present disclosure and the features of the embodiments may be arbitrarily combined with each other under the condition of no conflict.

It should be noted that the descriptions involving "first", "second", etc. in the present disclosure are only for the purpose of description, and should not be construed as indicating or implying their relative importance or implying the number of indicated technical features . Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature.

In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present disclosure.

As shown in FIGS. 1-5 , a refrigerator 1 is provided, which includes a box body 2 . The box body 2 is divided into a plurality of storage compartments, and the plurality of storage compartments include a refrigerator compartment 3 and a freezer compartment 4 .

FIG. 1 is a schematic diagram of an overall structure of a refrigerator according to some embodiments, and FIG. 2 is a schematic diagram of an internal structure of a refrigerator according to some embodiments. As shown in FIG. 1 and FIG. 2 , the refrigerating chamber 3 is disposed above the freezing chamber 4; in other embodiments, FIG. 3 is another schematic diagram of the overall structure of the refrigerator according to some embodiments, and FIG. Another schematic diagram of the internal structure of the refrigerator, as shown in FIG. 3 and FIG. 4 , the refrigerating chamber 3 is arranged below the freezing chamber 4 .

The refrigerating chamber 3 is surrounded by a refrigerating liner 5, and a refrigerating temperature control switch 7 is arranged in the refrigerating chamber 3; The refrigerating temperature control switch 7 is any one of a temperature magnetic switch, a bimetal thermostat switch, a thermometer equipped with a contact switch, and a temperature sensitive resistance switch. The freezing temperature control switch 8 is any one of a temperature magnetic switch, a bimetal thermostat switch, a thermometer equipped with a contact switch, and a temperature sensitive resistance switch. In a possible implementation manner, both the refrigerating temperature control switch 7 and the freezing temperature control switch 8 may be set as temperature magnetic switches. In the embodiment of the present disclosure, the refrigerator 1 is a mechanical direct cooling refrigerator.

Because the mechanical direct cooling refrigeration and freezing in the current refrigerator market is relatively common, the function is relatively simple, the main control principle is: use the temperature sensing head (or temperature sensing package) of a mechanical thermostat to extend to the evaporator of the refrigerating room, When the monitored temperature reaches the corresponding preset start-up (or shutdown) temperature value, the refrigerator operation circuit is turned on (or disconnected) to realize the start-stop control of the refrigerator compressor, thereby realizing the refrigeration cycle of the refrigerator.

Since this type of mechanical direct-cooling freezer refrigerator controls the compressor on and off through a single refrigerating temperature sensor head (or temperature sensor package), when the temperature of the freezer compartment is high, for example, when the user opens the door to put food at room temperature, the sense of refrigeration The temperature head cannot be sensed, so that the food newly put into the freezer cannot be rapidly cooled in time, which may affect the freshness and quality of the food. Therefore, the present disclosure proposes a new control strategy for such problems.

6 is a control flow chart of a refrigerating chamber of a refrigerator according to some embodiments, wherein, when the temperature T _C of the refrigerating chamber is higher than the first refrigerating temperature T _C1 , the refrigerating temperature control switch 7 is turned off; when the temperature T _C of the refrigerating chamber is lower than the first refrigerating temperature T C1 At the second refrigerating temperature T _C2 , the refrigerating temperature control switch 7 is closed; wherein, T _C1 >T _C2 . Specifically, the storage temperature range set in the refrigerator compartment 3 is [T _Cmin , T _Cmax ], where T _C1 >T _Cmax ≥T _C2 . In this embodiment, ΔT _C0 =T _C1 -T _C2 , and ΔT _C0 ≥ 3°C. The above settings can ensure that when the temperature of the refrigerating chamber is high (higher than the first refrigerating temperature T _C1 ), the temperature compensation circuit is disconnected, and the refrigerating heater does not work, so that the refrigeration of the refrigerating chamber 3 can be cooled rapidly, Effectively ensure the fresh-keeping quality of the food in the refrigerator compartment 3 .

Fig. 7 is a control flow chart of a freezing compartment of a refrigerator according to some embodiments. When the temperature T _D of the freezing compartment is higher than the first freezing temperature T _D1 , the freezing temperature control switch 8 is closed; when the temperature T _D of the freezing compartment is lower than the second freezing temperature T D1 When the temperature is T _D2 , the freezing temperature control switch 8 is turned off; wherein, T _D1 >T _D2 . Specifically, the storage temperature range set in the freezing compartment 4 is [T _Dmin , T _Dmax ], where T _D1 >T _Dmax ≥T _D2 . ΔT _D0 =T _D1 -T _D2 , in this embodiment, ΔT _D0 ≥ 3°C.

The above refrigeration temperature control switch 7, freezing temperature control switch 8, and refrigeration heater 9 are connected in series to form an electrical circuit for temperature compensation; when both the refrigeration temperature control switch 7 and the freezing temperature control switch 8 are closed, the temperature compensation electrical circuit conducts On, the refrigerating heater 9 heats the refrigerating chamber 3 to perform temperature compensation for the refrigerating chamber 3 .

Specifically, when the temperature of the refrigerating chamber T _C is lower than the second refrigerating temperature T _C2 and the temperature of the freezing chamber _{TD is higher than the first freezing temperature T D1} _, both the refrigerating temperature control switch 7 and the freezing temperature control switch 8 are closed, The refrigerator heater 9 heats the refrigerator compartment 3 . When the temperature compensating electric circuit that is turned on is lowered to the third freezing temperature _TD3 , the _freezing temperature control switch 8 is turned off, and the refrigerating heater 9 stops working. Wherein, the trigger temperature range for the freezing temperature control switch 8 to be turned off is [T _L1 , T _L2 ], where T _D3 ∈ [T _L1 , T _L2 ], T _D2 ∈ [T _L1 , T _L2 ]. Wherein, T _D3 may be equal to T _D2 or may not be equal to T _D2 ; specifically, in this embodiment, T _D3 ≠T _D2 is set.

When the refrigerating chamber 3 is in a normal refrigeration state, the temperature of the refrigerating chamber 3 is lower than the second refrigerating temperature T _C2 at this time, which can effectively ensure that the temperature of the refrigerating chamber is suitable for food preservation and storage, and the refrigerating temperature control switch 7 is closed at this time; Open the door of the freezer compartment 4 and put food at room temperature, then the temperature of the freezer compartment will rise, causing the temperature of the freezer compartment to be higher than the first freezing temperature T _D1 . At this time, the freezer temperature control switch 8 will be triggered to close, and the temperature compensation electrical circuit conducts On, the refrigerating heater 9 is heated to compensate the temperature of the refrigerating compartment 3 . At the same time, the working coefficient of the compressor is improved, the refrigeration of the freezer compartment 4 is increased, and the newly input food can be rapidly cooled down, which effectively improves the fresh-keeping quality of the food. The refrigerating chamber 3 is in a state of heating while cooling, and the cooling capacity and heating capacity in the refrigerating chamber 3 are basically balanced, so that the temperature of the refrigerating chamber 3 is basically kept constant, and the temperature in the refrigerating chamber 3 is prevented from being too low or negative temperature. As the working time of the compressor continues, the temperature in the freezing chamber 4 decreases; when the temperature _{TD of the freezing chamber is lower than the third freezing temperature TD3} _, it indicates that the cooling time has met the requirement of cooling the food, and the freezing temperature control is triggered at this time. The switch 8 is turned off, the electric circuit for temperature compensation is disconnected, the refrigerating heater 9 stops working, and the refrigerator 1 enters the normal operation mode.

In the present embodiment, the refrigerator 1 is provided with a refrigerating temperature control switch 7 and a refrigerating heater 9 in the refrigerating chamber 3, and a freezing temperature control switch 8, a refrigerating temperature control switch 7, a freezing temperature control switch 8, a refrigerating temperature control switch 8 in the freezing chamber 4 The heater 9 forms a temperature compensation electric circuit in series; when the temperature of the refrigerating chamber 3 is lower than the second refrigerating temperature T _C2 , and the temperature of the freezing chamber 4 is higher than the first refrigerating temperature T _D1 , the refrigerating temperature control switch 7 and the freezing The temperature control switches 8 are all closed, and the electric circuit for temperature compensation is turned on. At this time, the refrigerating heater 9 heats the refrigerating chamber 3, and the heat can be transferred to the refrigerating evaporator to delay the shutdown time, thereby improving the compressor operating coefficient and increasing refrigeration. Effect.

On the one hand, the arrangement of the present disclosure enables the freezer compartment 4 of the refrigerator 1 to sense and quickly cool down when food at room temperature is put in, so as to improve the food preservation effect, prolong the shelf life of the food, improve the product quality, and improve the user experience. 3 is in a state of heating while cooling, and the cooling capacity and heating capacity in the refrigerating chamber 3 are basically balanced, so that the temperature of the refrigerating chamber 3 is basically kept constant, so as to avoid the temperature of the refrigerating chamber 3 being too low or negative temperature; Avoid the situation that the refrigerating heater 9 is in a heating state when the refrigerating chamber 3 needs to be cooled, which leads to slow refrigeration and refrigeration, so as to prevent the refrigerator 1 from performing temperature compensation when unnecessary, effectively guaranteeing the fresh-keeping quality of the food in the refrigerating chamber 3, and achieving energy saving purpose. The above descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure in other forms. Any person skilled in the art may use the technical contents disclosed above to make changes or modifications to equivalent changes. The embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present disclosure without departing from the technical solutions of the present disclosure still belong to the protection scope of the technical solutions of the present disclosure.

Claims

A refrigerator, comprising:

The refrigerating room is surrounded by a refrigerating liner;

The freezer compartment is surrounded by a freezer liner;

a refrigerating heater, arranged in the refrigerating chamber;

The refrigerating temperature control switch is set in the refrigerating chamber; when the temperature T C of the refrigerating chamber is higher than the first refrigerating temperature T C1 , the refrigerating temperature control switch is turned off; when the temperature T C of the refrigerating chamber is lower than the second refrigerating temperature T When C2 , the refrigerating temperature control switch is closed; wherein, T C1 >T C2 ;

The freezing temperature control switch is set in the freezing chamber; when the freezing chamber temperature TD is higher than the first freezing temperature TD1 , the freezing temperature control switch is closed; when the freezing chamber temperature TD is lower than the second freezing temperature TD2 , the freezing temperature control switch is disconnected; wherein, T D1 > T D2 ;

The refrigerating temperature control switch, the freezing temperature control switch and the refrigerating heater are connected in series to form a temperature compensation electric circuit;

When the refrigerating chamber temperature T C is lower than the second refrigerating temperature T C2 , and the freezing chamber temperature TD is higher than the first freezing temperature T D1 , the refrigerating temperature control switch and the freezing temperature control switch are both closed, so The electric circuit for temperature compensation is turned on, and the refrigerating heater is heated.
The refrigerator according to claim 1, wherein the storage temperature range set in the refrigerating compartment is [T Cmin , T Cmax ], where T C1 >T Cmax ≥T C2 .
The refrigerator according to claim 2, ΔT C0 =T C1 -T C2 , and ΔT C0 ≥ 3°C.
The refrigerator according to claim 1, 2 or 3, wherein the storage temperature range set in the freezer compartment is [T Dmin , T Dmax ], where T D1 >T Dmax ≥T D2 .
The refrigerator according to claim 4, ΔT D0 =T D1 -T D2 , and ΔT D0 ≥ 3°C.
The refrigerator according to claim 1, when the temperature T D of the freezing chamber drops to a third freezing temperature T D3 , the freezing temperature control switch is turned off, and the refrigerating heater stops working; the freezing temperature control switch is turned off The trigger temperature range for ON is [T L1 , T L2 ], T D3 ∈ [T L1 , T L2 ], T D2 ∈ [T L1 , T L2 ].
The refrigerator according to claim 6, T D3 ≠T D2 .
Refrigerator according to claim 1, said refrigeration temperature control switch is any one of temperature magnetic sensitive switch, bimetal thermostat switch, thermometer equipped with contact switch, temperature sensitive resistance switch.
The refrigerator according to claim 2, wherein the freezing temperature control switch is any one of a temperature magnetic switch, a bimetal thermostat switch, a thermometer equipped with a contact switch, and a temperature sensitive resistance switch.
The refrigerator according to claim 1, wherein the refrigerator is a mechanical direct cooling refrigerator.