WO2014173098A1 - Refrigerator and temperature control method thereof - Google Patents

Abstract

A refrigerator, comprising a freezer compartment (20), a quick-freeze compartment (30), a fan (12), a ventilation duct (13), and a ventilation door (14); the ventilation duct (13) comprises multiple air supply inlets (131, 132), at least one air supply inlet (132) for the quick-freeze compartment (30) to blow air into the quick-freeze compartment (30); the ventilation door (14) is disposed in the ventilation duct (13) downstream of an evaporator (11) and between an air supply inlet (132) for the quick-freeze compartment and an air supply inlet (131) for the freezer compartment; the air supply inlet (132) for the quick-freeze compartment is disposed upstream of the air supply inlet (131) for the freezer compartment; and the ventilation door (14) controls the ventilation duct (13) to adjust the proportion of air blowing into the quick-freeze compartment (30) and the freezer compartment (20). Also disclosed is a refrigerator temperature control method, the method enables the temperature in the freezer compartment (20) to remain normally controlled after the activation of the quick-freeze function, thus preventing the overtemperature in the freezer compartment (20) due to the quick-freeze requirement of the quick-freeze compartment (30).

Description

 Temperature control method for refrigerator and refrigerator

The present application claims the priority of the Chinese Patent Application No. 201310152158.6, the entire disclosure of which is incorporated herein by reference.

[Technical Field]

The invention relates to a refrigeration device, in particular to a refrigerator with a quick freezing function and a temperature control method of the refrigerator.

【Background technique】

With the improvement of living standards, people's requirements for food preservation are getting higher and higher. Especially the food stored in the freezer room sometimes needs to be frozen quickly to prevent the cell wall damage caused by the freezing speed being too slow. In the prior art, a refrigerator having a quick freezing function is often provided with a quick freezing compartment, and the refrigerator includes a first fan, a second fan, an evaporator, a first air passage, and a second air passage. The first air passage is in communication with the freezer compartment, and the second air duct is in communication with the quick freezing compartment. In the case of general cooling, if the freezer compartment of the refrigerator needs to be cooled, the first fan operates, and the air cooled by the evaporator passes through the first air duct and the second air duct to cool the freezer compartment and the quick freezing compartment. When the quick freezing function is turned on, the first fan stops working, and the second fan separately cools the quick freezing compartment. At this time, the air volume passing through the evaporator enters the quick freezing compartment through the second air passage, so that all the cooling capacity is blown into the quick freezing compartment, and the food in the quick freezing compartment can be quickly frozen.

However, after the quick freezing function is turned on, in order to lower the temperature in the quick freezing compartment, the first fan stops working and the second fan operates alone. At this time, the second fan inputs all of the air cooled by the evaporator into the quick freezing compartment. In this way, there is no supply of cold in the freezer compartment, which causes an increase in the temperature in the freezer compartment, and thus cannot meet the demand for refrigeration in the freezer compartment.

 [Summary of the Invention]

One of the objects of the present invention is to provide a refrigerator which solves the problem that the temperature in the freezer compartment cannot be kept constant during quick freezing and freezing in the current quick freezing refrigerator.

Another object of the present invention is to provide a temperature control method for the above refrigerator.

In order to achieve the above object, a refrigerator of the present invention comprises: a freezing compartment, a quick freezing compartment, a fan, and an air duct, the air duct including a plurality of air blowing vents, at least one of which is provided with a tuyere and a quick freezing compartment. The chamber cooperates to supply air to the interior of the quick freezing compartment, and the refrigerator further includes a damper disposed in the air duct, the damper is disposed downstream of the evaporator, and is located at a supply air outlet and a joint with the quick freezing compartment Between the air supply vents of the freezer compartment, the tuyere corresponding to the quick freezing compartment is disposed upstream of the air supply vent cooperated with the freezing compartment, and the damper controls the air duct to adjust the quick freezing compartment The ratio of air supply in the chamber and the freezer compartment.

As a further improvement of the present invention, the fan is disposed between the air supply vent and the damper that cooperate with the quick freezing compartment.

As a further improvement of the present invention, the refrigerator includes a temperature sensor for sensing a temperature in the freezing compartment, the temperature sensor configured to when the freezing compartment temperature is higher than a set first threshold, The temperature sensor feeds back information to the refrigerator control unit, placing the damper in an open position.

As a further improvement of the present invention, the refrigerator includes a temperature sensor for sensing a temperature in the freezing compartment, the temperature sensor being configured to when the freezing compartment temperature is lower than a set second threshold, The temperature sensor feeds back information to the refrigerator control unit, placing the damper in the closed position.

As a further improvement of the present invention, the fan speed when the damper is in the closed position is lower than the fan speed in which the damper is in the open position.

In order to achieve another object of the present invention, the present invention provides a temperature control method for a refrigerator, the method comprising the following steps:

S1. Monitoring a temperature in the freezer compartment of the refrigerator;

S2, controlling a damper disposed in the air duct according to the monitoring result to adjust a ratio of air supply in the quick freezing compartment and the freezing compartment, wherein the damper is disposed downstream of the evaporator and is located in cooperation with the quick freezing compartment Between the air supply vent and the air supply vent which cooperates with the freezing chamber, the air vent which cooperates with the quick freezing compartment is disposed upstream of the air supply vent which cooperates with the freezing compartment.

As a further improvement of the present invention, the fan of the refrigerator is disposed between the air supply vent and the damper that cooperate with the quick freezing compartment.

As a further improvement of the present invention, the step S2 includes: placing the damper in an open position if the monitored temperature in the freezer compartment is above a set first threshold.

As a further improvement of the present invention, the step S2 includes: placing the damper in a closed position if the monitored temperature in the freezing chamber is below a set second threshold.

As a further improvement of the present invention, the step S2 further includes: controlling the fan speed of the refrigerator to be lower than a fan speed of the damper in an open position when the damper is in a closed position.

Compared with the prior art, the invention has the beneficial effects that the refrigerator of the invention can ensure the normal regulation of the temperature in the freezer compartment at the same time after the quick freezing function is turned on, and does not appear to meet the quick freezing demand of the quick freezing compartment. The problem of causing the temperature in the freezer compartment to be relatively high.

 [Description of the Drawings]

1 is a schematic view showing the internal structure of a refrigerator according to an embodiment of the present invention, wherein the arrows indicate the flow direction of the refrigerating air in the air duct in the refrigerator;

Figure 2 is a partial schematic view of the damper portion of Figure 1;

3 is a schematic diagram of temperature curves in a freezer compartment and a quick freezing compartment of a refrigerator according to the present invention, wherein the horizontal axis is the time axis, the vertical axis is the temperature axis, the curve A represents the temperature profile of the freezer compartment, and the curve B represents the temperature of the quick freezing compartment. curve.

 【detailed description】

Example 1

The present invention will be described in detail below with reference to the embodiments shown in the drawings, but these embodiments are not intended to limit the invention, the function, method, or structure of Equivalent transformations or substitutions are within the scope of the invention.

As shown in FIGS. 1 to 2, the refrigerator 100 of the present invention includes a casing 10 having a space formed therein, which forms a freezer compartment 20 of the refrigerator, and the freezer compartment 20 is required for food placed therein. Refrigerated items are frozen to prevent spoilage. A separate quick freezing compartment 30 is also disposed in the freezing compartment 20, and the quick freezing compartment 30 can quickly freeze the items to be cooled placed therein independently of the freezing compartment 20.

In order to realize the refrigeration function of the refrigerator, the cabinet 10 is provided with an evaporator 11 and a fan 12, and the air passing through the evaporator 11 is cooled to a lower temperature, and the cooled air is sent to the freezing chamber 20 by the fan 12, and is frozen. In the compartment 30. The refrigerator 100 also includes a duct 13 for conveying the refrigerating air driven by the blower 12. The air duct 13 includes a plurality of air supply vents, and at least one of the quick freezing air vents 132 cooperates with the quick freezing compartment 30 to supply air to the interior of the quick freezing compartment 30. The air supply vent also includes a chilled air supply port 131 that cooperates with the freezer compartment 20, and the quick-frozen air supply vent 132 is disposed upstream of the chilled air supply vent 131. It should be noted that "upstream" herein, and "downstream" as used hereinafter as opposed to "upstream", are defined in terms of the flow direction of the refrigerating air in the refrigerator.

As an embodiment, a damper 14 is disposed in the air duct 13, and the damper 14 is located between the quick-frozen air supply vent 132 and the chilled air supply vent 131, and can be used to control the air passage communicating with the freezing compartment 20, thereby blocking entry. The refrigerating air in the duct 13 enters the freezing compartment 20. The fan 12 is disposed between the quick-frozen air supply port 132 and the damper 14.

When the damper 14 is closed, the air cooled by the evaporator 11 is completely driven by the blower 12 into the quick freezing compartment 30 through the air duct 13, so that the refrigeration of the food in the quick freezing compartment 30 can be quickly achieved.

In the above embodiment, the refrigerator 100 further includes a temperature sensor located in the freezing compartment 20, which can be used to detect the temperature in the freezing compartment to actuate the opening and closing of the damper 14. Specifically, the temperature sensor is configured to, when the temperature in the freezing compartment is higher than a set first threshold, the temperature sensor feeds back information to the refrigerator control unit, and places the damper 14 in an open position. At this time, the refrigerating air enters both the freezing compartment 20 and the freezing compartment 30 to ensure that the freezing compartment 20 can be at a suitable low temperature.

The temperature sensor is configured to feedback information to a refrigerator control unit to place the damper 14 in a closed position when the freezing chamber temperature is below a set second threshold. At this time, the refrigerating air is completely sent into the quick freezing compartment 30 via the air duct 13.

It should be noted that the first threshold is greater than or equal to the second threshold.

The damper 14 selectively pivots the air passage communicating with the freezing compartment 20 in a pivotal manner, and the controlled opening size of the damper 14 can be used to control the air supply ratio between the freezing compartment 20 and the quick freezing compartment 30.

When the food in the quick freezing compartment 30 is separately cooled, the refrigerator 100 also has a power saving mode because excessive cooling is not required. Specifically, when the damper 12 is closed, the corresponding command is triggered, and the control system of the refrigerator receives the corresponding command to control the rotation speed of the fan 12 to reduce the rotation speed of the fan 12. That is, when the damper is in the closed position, the fan speed that controls the refrigerator is lower than the fan speed in which the damper is in the open position. At the same time, the amount of air passing through the evaporator 11 is reduced. In this way, not only the rapid cooling of the food in the quick freezing compartment, but also the power consumption of the refrigerator is reduced, further saving energy and improving the refrigeration efficiency of the refrigerator.

As shown in connection with Figure 3, the temperature profile in the freezer compartment remains relatively constant, thus indicating that the temperature of the freezer compartment can be relatively constant even during rapid freezing refrigeration.

The refrigerator of the invention ensures that the temperature in the freezer compartment can be normally regulated at the same time after the quick freezing function is turned on, and there is no problem that the temperature in the freezer compartment is relatively high in order to meet the quick freezing requirement of the quick freezing compartment. At the same time, the beneficial effect of the present invention is that since only one fan is disposed in the refrigerator, the power consumption of the refrigerator is reduced. Further, the volume occupied by the above damper is small, and the volume ratio of the refrigerator of the present invention is relatively increased.

Accordingly, the present invention also relates to a temperature control method applied to the above refrigerator, and in particular, the temperature sensor control method includes the following steps:

S1. Monitoring a temperature in the freezer compartment of the refrigerator;

S2, controlling a damper disposed in the air duct according to the monitoring result to adjust a ratio of air supply in the quick freezing compartment and the freezing compartment, wherein the damper is disposed downstream of the evaporator and located in the quick freezing compartment Between the air supply vent and the air supply vent which cooperates with the freezer compartment, the air vent which cooperates with the quick freezing compartment is disposed upstream of the air supply vent which cooperates with the freezing compartment.

The fan 12 of the refrigerator is disposed between the air supply vent and the damper 14 that cooperate with the quick freezing compartment.

Further, the step S2 further includes: if the monitored temperature in the freezing chamber is higher than a set first threshold, placing the damper in an open position; if the monitored temperature in the freezing chamber is lower than a set value At the second threshold, the damper is placed in the closed position. The first threshold is greater than or equal to the second threshold.

The step S2 further includes: when the damper is in the closed position, controlling the fan speed of the refrigerator to be lower than the fan speed of the damper in the open position.

In addition, the refrigerator also has a normal cooling mode, in which case the above temperature sensor is used to trigger the opening or closing of the fan 12.

The quick freezing compartment 30 described above may be a quick freezing drawer.

It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims instead All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim.

In addition, it should be understood that although the description is described in terms of embodiments, not every embodiment includes only one independent technical solution. The description of the specification is merely for the sake of clarity, and those skilled in the art should regard the specification as a whole. The technical solutions in the respective embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

Claims (10)

1. A refrigerator includes: a freezing compartment, a quick freezing compartment, a fan, and an air duct, wherein the air duct includes a plurality of air blowing vents, wherein at least one air blowing vent cooperates with the quick freezing compartment, and sends the room to the quick freezing compartment Wind, characterized in that the refrigerator further comprises a damper disposed in the air duct, the damper is disposed downstream of the evaporator, and is located at a supply tuyere that cooperates with the quick freezing compartment and a supply air that cooperates with the freezing compartment Between the tuyères, the tuyere that cooperates with the quick freezing compartment is disposed upstream of the air supply tuyere that cooperates with the freezing compartment, and the damper controls the air duct to adjust the quick freezing compartment and the freezing compartment The proportion of air supply.
2. The refrigerator according to claim 1, wherein the fan is disposed between the air supply vent and the damper that cooperate with the quick freezing compartment.
3. The refrigerator according to claim 1, wherein the refrigerator includes a temperature sensor for sensing a temperature in the freezing compartment, the temperature sensor being configured to be higher than a set temperature when the freezing compartment is higher At a threshold, the temperature sensor feeds back information to the refrigerator control unit, placing the damper in an open position.
4. The refrigerator according to claim 1, wherein the refrigerator includes a temperature sensor for sensing a temperature in the freezing compartment, the temperature sensor being configured to be lower than a set temperature when the freezing compartment temperature At the second threshold, the temperature sensor feeds back information to the refrigerator control unit to place the damper in the closed position.
5. The refrigerator according to claim 1 or 4, wherein the fan speed when the damper is in the closed position is lower than the fan speed of the damper in the open position.
6. A temperature control method for a refrigerator, characterized in that the method comprises the following steps:

   S1. Monitoring a temperature in the freezer compartment of the refrigerator;

   S2, controlling a damper disposed in the air duct according to the monitoring result to adjust a ratio of air supply in the quick freezing compartment and the freezing compartment, wherein the damper is disposed downstream of the evaporator and is located in cooperation with the quick freezing compartment Between the air supply vent and the air supply vent which cooperates with the freezing chamber, the air vent which cooperates with the quick freezing compartment is disposed upstream of the air supply vent which cooperates with the freezing compartment.
7. The temperature control method according to claim 6, wherein the fan of the refrigerator is disposed between the air supply vent and the damper that cooperate with the quick freezing compartment.
8. The temperature control method according to claim 6, wherein the step S2 comprises: placing the damper in an open position if the monitored temperature in the freezing chamber is higher than a set first threshold.
9. The temperature control method according to claim 6, wherein the step S2 comprises: placing the damper in a closed position if the monitored temperature in the freezing chamber is lower than a set second threshold.
10. The temperature control method according to claim 6 or 9, wherein the step S2 further comprises: controlling the fan speed of the refrigerator to be lower than the fan in the open position when the damper is in the closed position; Rotating speed.

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