CN108413701A - A kind of control method and refrigerator for refrigerator sterilization - Google Patents

Abstract

The invention provides a control method for refrigerator sterilization and a refrigerator. At least one ultraviolet germicidal lamp is arranged in a storage room of the refrigerator, and the control method includes: detecting that food is placed in the sterilization area of the storage room; Signal: turn on the ultraviolet germicidal lamp, reflect the light emitted by the ultraviolet germicidal lamp through the reflective cavity wall of the storage compartment, and sterilize the food in the sterilization area from multiple angles. The invention solves the problem in the prior art that the irradiated range of the ultraviolet germicidal lamp in the storage room of the refrigerator is blocked by the shelves, resulting in relatively poor sterilizing effect on food.

Description

A control method for refrigerator sterilization and refrigerator

technical field

The invention relates to the field of refrigerators, in particular to a control method for sterilization of refrigerators and a refrigerator.

Background technique

In the prior art, the irradiation range of the ultraviolet germicidal lamp in the storage room of the refrigerator is blocked by the shelves, so it is impossible to sterilize the entire space in the storage room, resulting in a relatively low sterilization effect on the food in the storage room. Difference.

Contents of the invention

An object of the present invention is to provide a control method for refrigerator sterilization and a refrigerator to solve the sterilizing effect on food caused by the irradiated range of the ultraviolet germicidal lamp in the storage room of the refrigerator in the prior art due to being blocked by the shelves. Relatively poor question.

In particular, the present invention provides a control method for refrigerator sterilization, wherein at least one ultraviolet germicidal lamp is arranged in a storage compartment of the refrigerator, and the control method includes:

Detect that food is placed in the sterilization area of the storage compartment;

Obtain a sterilization start signal;

The ultraviolet germicidal lamp is turned on, the light emitted by the ultraviolet germicidal lamp is reflected through the reflective cavity wall of the storage compartment, and the food in the sterilization area is sterilized from multiple angles.

Further, before the step of turning on the ultraviolet germicidal lamp, it also includes: identifying the type of food and measuring the weight of the food, and determining the sterilization level according to the type and weight of the food, and the sterilization level is preset There is the turn-on time and luminous intensity of the ultraviolet germicidal lamp;

The step of turning on the ultraviolet germicidal lamp includes: controlling the starting of the ultraviolet germicidal lamp according to the determined turn-on time and luminous intensity specified by the germicidal level.

Further, the step of controlling the start-up of the ultraviolet germicidal lamp according to the determined turn-on time and luminous intensity specified by the sterilizing level specifically includes:

When reaching a high level of sterilization, make the ultraviolet germicidal lamp irradiate the food with ultraviolet rays of a first preset intensity within a first preset time period, so as to sterilize the food;

When the moderate sterilization level is reached, the ultraviolet germicidal lamp is used to irradiate the food with ultraviolet rays of a second preset intensity within a second preset time period, so as to sterilize the food;

When the mild sterilization level is reached, the ultraviolet germicidal lamp is used to irradiate the food with ultraviolet rays of a third preset intensity within a third preset time period, so as to sterilize the food.

Further, the step of determining the sterilization level according to the type and weight of the food specifically includes:

If the food is vegetables and its weight is greater than a first preset weight, or if the food is meat and its weight is greater than a second preset weight, then sterilize the food at a high sterilization level;

If the food is vegetables and its weight is greater than the second preset weight and less than or equal to the first preset weight or the first preset weight, or the food is fruit and its weight is greater than the first preset weight, then use Moderate The sterilizing level sterilizes the food;

If the food is vegetables and its weight is less than or equal to the second preset weight, or if the food is fruit and its weight is less than the first preset weight, the food is sterilized at a mild sterilization level.

Further, the first preset weight is 2kg, and the second preset weight is 1kg.

Further, the first preset intensity of ultraviolet rays is 90-110uw/cm ² , and the first preset time is 35-45 minutes;

The ultraviolet rays of the second preset intensity are 70-80uw/cm ² , and the second preset time is 25-35 minutes;

The ultraviolet rays of the third preset intensity are 55-65uw/cm ² , and the third preset time is 20-30 minutes.

The present invention also provides a refrigerator, which includes:

The storage compartment has a hollowed-out shelf movably connected therewith and an ultraviolet germicidal lamp arranged above or below the hollowed-out shelf; and

A controller, which includes a memory and a processor, wherein the memory stores a computer program, and when the program is executed by the processor, the control method according to any one of claims 1 to 5 can be executed for the hollowing out. The food on the shelf is sterilized.

Further, the inner side wall of the storage compartment is a stainless steel plate, which is configured to reflect the light emitted by the ultraviolet germicidal lamp, so as to sterilize the food on the hollow shelf from multiple angles.

Further, the storage compartment has an infrared sensing device for identifying the type of food and a balance for measuring the weight of the food;

Wherein, the infrared sensing device includes an infrared transmitter and a receiver.

Further, there are two ultraviolet germicidal lamps, which are respectively arranged above and below the hollow shelf to sterilize the top and bottom of the food on the hollow shelf;

Wherein, the outer surfaces of the two ultraviolet germicidal lamps are covered with a vacuum heat insulation layer to reduce the heat emitted by the ultraviolet germicidal lamps from affecting the temperature in the storage compartment.

Further, the inner side wall of the storage compartment has a plurality of inclined sumps for collecting condensation; and the storage compartment is also provided with an evaporation tank connected to the lowest end of the sump and a heating plate located at the bottom of the storage compartment;

The evaporating tank is configured to extend from the lowermost end of the water collecting tank to the heating plate for introducing the condensed dew flowing into the water collecting tank into the heating plate so as to be heated by the heating plate. The plate evaporates the condensation.

The beneficial effects of the present invention are:

First of all, because the control method used for refrigerator sterilization first detects that food is placed in the sterilization area of the storage room, and then obtains the sterilization start signal. When the ultraviolet germicidal lamp starts to work, the ultraviolet rays emitted by the ultraviolet germicidal lamp pass through the storage room. The reflective cavity wall of the chamber emits light to sterilize the food in the sterilization area from multiple angles. In this way, since the cavity wall of the storage compartment has a reflective effect, the light emitted by the ultraviolet germicidal lamp in the cavity (storage compartment) can be reflected, so that it can be irradiated on the food from multiple angles, without limitation. Because the ultraviolet rays in the prior art can only irradiate the surface of the food, the efficiency of sterilization can be greatly improved. In this way, the problem in the prior art that the irradiation range of the ultraviolet germicidal lamp in the storage room of the refrigerator is blocked by the shelves and thus has a relatively poor sterilization effect on food is solved.

Secondly, put the food on the hollow shelf board. When the ultraviolet germicidal lamps above and/or below the hollow shelf board irradiate the food separately or at the same time, since the hollow shelf board has a light-transmitting effect, the ultraviolet rays can penetrate Through the hollow shelf, it can not only sterilize the top or surface of the food, but also can sterilize the bottom of the food, thus further expanding the range of ultraviolet rays covering food, so as to further improve the sterilization of food by ultraviolet germicidal lamps s efficiency.

Furthermore, the control method of the present invention can determine the corresponding sterilization grade according to the type and weight of the food to be sterilized, so that the ultraviolet germicidal lamp can be controlled to irradiate the food within the specified opening time according to different sterilization grades, and the food can be irradiated during the irradiation. During the process, the food is sterilized with the specified luminous intensity, so as to achieve the purpose of sterilizing the food while saving energy.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic flowchart of a control method for refrigerator sterilization according to an embodiment of the present invention;

Fig. 2 is a schematic flowchart of a control method for refrigerator sterilization according to another embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

Fig. 4 is a schematic structural block diagram for a refrigerator according to an embodiment of the present invention;

Fig. 5 is a schematic connection structure diagram of the refrigerator liner and the storage compartment shown in Fig. 3;

Fig. 6 is a schematic structural diagram of the storage compartment shown in Fig. 3;

Fig. 7 is a schematic structural diagram of a sump in the storage compartment shown in Fig. 3;

Fig. 8 is a schematic structural view of the inner side wall of the storage compartment with the water collection tank shown in Fig. 7 .

Detailed ways

Fig. 1 is a schematic flow chart of a control method for refrigerator sterilization according to an embodiment of the present invention, to solve the problem that the irradiation range of the ultraviolet germicidal lamp in the storage room of the refrigerator in the prior art is blocked by the shelves. The problem of poor sterilization effect on food. At least one ultraviolet germicidal lamp is installed in the storage room of the refrigerator, and the control methods include:

S101. Detect that food is placed in the sterilization area of the storage compartment;

S102. Obtain a sterilization start signal;

S103. Turn on the ultraviolet germicidal lamp, reflect the light emitted by the ultraviolet germicidal lamp through the reflective cavity wall of the storage compartment, and sterilize the food in the sterilization area from multiple angles.

Because the control method used for refrigerator sterilization first detects that food is placed in the sterilization area of the storage compartment, and then obtains the sterilization start signal, and when the ultraviolet germicidal lamp starts to work, the ultraviolet rays emitted by the ultraviolet germicidal lamp pass through the storage compartment. The reflective cavity wall is emitted to sterilize the food in the sterilization area from multiple angles. In this way, since the cavity wall of the storage compartment has a reflective effect, the light emitted by the ultraviolet germicidal lamp in the cavity (storage compartment) can be reflected, so that it can be irradiated on the food from multiple angles, without limitation. Because the ultraviolet rays in the prior art can only irradiate the surface of the food, the efficiency of sterilization can be greatly improved. In this way, the problem in the prior art that the irradiation range of the ultraviolet germicidal lamp in the storage room of the refrigerator is blocked by the shelves and thus has a relatively poor sterilization effect on food is solved.

As shown in Figure 2, in the above embodiment, before the step of turning on the ultraviolet germicidal lamp, it may also include:

S104. Identify the type of food and measure the weight of the food, and determine the sterilization level according to the type and weight of the food. The sterilization level is preset with the start time and luminous intensity of the ultraviolet germicidal lamp.

Wherein, the step of turning on the ultraviolet germicidal lamp may include: controlling the start-up of the ultraviolet germicidal lamp according to the turn-on time and luminous intensity specified by the determined sterilization level.

Further, the step of controlling the start-up of the ultraviolet germicidal lamp according to the determined turn-on time and luminous intensity specified by the sterilizing level may specifically include:

When a high level of sterilization is reached, the ultraviolet germicidal lamp is used to irradiate the food with ultraviolet rays of a first preset intensity within a first preset time period, so as to sterilize the food.

When the moderate sterilization level is reached, the ultraviolet germicidal lamp is used to irradiate the food with ultraviolet rays of a second preset intensity within a second preset time period, so as to sterilize the food.

When the mild sterilization level is reached, the ultraviolet germicidal lamp is made to irradiate the food with ultraviolet rays of a third preset intensity within a third preset time period, so as to sterilize the food.

It is worth noting that the control method in this embodiment automatically determines the sterilization level based on the principle of high efficiency and energy saving, so that the irradiation intensity of the ultraviolet germicidal lamp (that is, the ultraviolet germicidal dose) and the time of sterilization can be controlled according to different sterilization levels, wherein, The irradiation dose (J/m2) can be the product of the irradiation time (s) and the irradiation intensity (W/m2). Among them, the first preset intensity of ultraviolet rays can be 90-110uw/cm ² or about 100uw/cm ² , the first preset time can be 35-45 minutes, or about 40 minutes; the second preset The intensity of ultraviolet rays can be 70-80uw/cm ² or about 75uw/cm ² ; the first preset time can be 25-35 minutes or about 230 minutes; the third preset intensity of ultraviolet rays can be 55- 65uw/cm ² , or about 60uw/cm ² , the first preset time can be 20-30 minutes, or about 25 minutes. In this way, according to the type and weight of the food to be sterilized, the corresponding sterilization level is determined, and the irradiation intensity and sterilization time of the control ultraviolet germicidal lamp are determined through different sterilization levels, so that according to different food types and different food quantities (weight) ), sterilize the food in the storage compartment with the optimal sterilization mode (sterilization level), so as to achieve the purpose of sterilizing the food while saving energy, and solve the problem that the sterilization module of the refrigerator in the prior art has always been in the The problem of waste of electric energy in the working mode of alternate start and stop.

In the above further embodiment, the step of determining the sterilization level according to the type and weight of the food may specifically include:

If the food is vegetables and its weight is greater than the first preset weight, or the food is meat and its weight is greater than the second preset weight, the food is sterilized at a high sterilization level.

If the food is vegetables and its weight is greater than the second preset weight and less than or equal to the first preset weight, or if the food is fruit and its weight is greater than the first preset weight, the food is sterilized at a moderate sterilization level.

If the food is vegetables and its weight is less than or equal to the second preset weight, or if the food is fruit and its weight is less than the first preset weight, the food is sterilized at a mild sterilization level.

Among them, the identification of food types can be realized by infrared identification technology. As shown in Figure 3, the infrared sensing device 20 composed of an infrared emitter, a processor and a receiver assembly emits infrared rays through the infrared emitter and forms reflected light waves after irradiating food, and the processor analyzes the frequency of the light waves received by the receiver and intensity, and through database comparison to lock the type of ingredients corresponding to the frequency and intensity of light waves. In this embodiment, food can be mainly divided into three types: fruits, vegetables, and meat. It can also be further refined to divide food into fruits, vegetables, meat, beans, snacks, aquatic foods and so on. The weight or quantity of food can be determined by the built-in balance 21 in the storage room.

At the same time, it will be described in conjunction with FIGS. 3 to 6. This embodiment also provides a refrigerator 100, which may include: a storage compartment 1, which has a hollow shelf board 2 movably connected with it and is located on the hollow shelf board 2. The ultraviolet germicidal lamp 3 above or below; and a controller 4 including a memory and a processor, wherein the memory stores a computer program, which can execute the control method described in any one of the above-mentioned embodiments when the program is executed by the processor. The food on the shelf board 2 is sterilized. The inner wall of the storage compartment 1 can be a stainless steel plate, which can be configured to reflect the light emitted by the ultraviolet germicidal lamp, so as to sterilize the food on the hollow shelf from multiple angles. The storage compartment 1 is fixedly connected with the inner container structure of the refrigerator 100 (as shown in FIG. 4 ).

In this way, since the cavity wall of the storage compartment 1 has a reflective effect, the light emitted by the ultraviolet germicidal lamp 3 in the cavity (storage compartment) can be reflected, so that it can be irradiated on the food from multiple angles, and The ultraviolet rays that are not limited to the prior art can only irradiate the surface of the food, thereby greatly improving the efficiency of sterilization. In this way, the problem in the prior art that the irradiation range of the ultraviolet germicidal lamp in the storage room of the refrigerator is blocked by the shelves and thus has a relatively poor sterilization effect on food is solved. Moreover, since the shelf board 2 in the storage compartment 1 is a hollowed-out shelf board, when the ultraviolet rays emitted by the ultraviolet germicidal lamp 3 pass through the cavity wall of the storage compartment 1 after multiple reflections, they can penetrate the hollow space. The shelf board 2 can effectively penetrate through the bottom of the food and effectively sterilize the bottom of the food. It is not difficult to find that the shelf board 2 is set as a hollow structure, and combined with the stainless steel plate cavity wall of the storage compartment 1, it can more effectively sterilize the food at various angles or details, thereby greatly improving the safety of the food. Bactericidal efficiency.

In a further embodiment, the storage compartment 1 may have an infrared sensing device for identifying the type of food and a balance for measuring the weight of the food; wherein the infrared sensing device may include an infrared transmitter, a processor and a receiver. There are two ultraviolet germicidal lamps, which are respectively arranged above and below the hollow shelf to sterilize the top and bottom of the food on the hollow shelf. Wherein, the outer surfaces of the two ultraviolet germicidal lamps are covered with a vacuum heat insulation layer, so as to reduce the influence of the heat emitted by the ultraviolet germicidal lamps on the temperature in the storage room. In this embodiment, the number of ultraviolet germicidal lamps 3 can be set according to actual needs, such as setting one, two, three, four, five, etc. of ultraviolet germicidal lamps 3 . In the case of multiple ultraviolet germicidal lamps, they are generally installed above and below the shelf 2 to sterilize the food placed on the shelf from multiple angles, thereby further improving the sterilization efficiency. Certainly, the ultraviolet germicidal lamp 3 can also be arranged at other positions in the storage compartment 1, as long as it is convenient to sterilize the food.

In any of the above-mentioned embodiments, as described in conjunction with FIG. 7 and FIG. 8 , the inner side wall 10 of the storage compartment 1 may have a plurality of inclined sumps 11 for collecting condensation; and the storage compartment 1 is also An evaporation tank 14 connected to the lowest end of the sump 11 and a heating plate 15 arranged at the bottom of the storage compartment 1 may be provided. Wherein, the evaporating tank 14 can be configured to extend from the lowest end of the sump 11 to the heating plate 15, and is used to introduce the condensation that flows into the sump 11 into the heating plate 15, so that the heating plate 15 can Condensation evaporates.

It should be noted that since the inner side wall 10 of the storage compartment 1 has a special inclined water collection tank 11, when the ultraviolet germicidal lamp 3 is working normally, the inner side wall 10 of the storage compartment 1 will gather condensation. The design of the sump 11, the condensation on the inner wall will be collected in the sump 11, and the lowest end of the sump 11 is connected to the port of the evaporation tank, and the condensation in the sump will be introduced into the evaporation tank due to gravity . The shape of the sump 11 can be set according to actual needs, and it can be convenient to collect condensation. The quantity of the sump 11 can also be set according to actual needs. When the inner wall 10 of the storage compartment 1 is provided with a plurality of water collection tanks 11, each water collection tank can be arranged in parallel, or can be set according to requirements, but the port at the lowest end of each water collection tank can pass through the circulation groove 12 connected, and the circulation tank 12 communicates with the evaporation tank 14 so that the circulation tank 12 can introduce the condensate flowing into it into the evaporation tank 14 . Of course, the circulation tank 12 can also be an evaporation tank 14, but the evaporation tank 14 provided on the bottom surface of the storage compartment 1 can be configured to extend to the lowest port of each water collection tank. Wherein, the bottom surface of the storage compartment 1 can be provided with a heating plate 15, and the evaporation tank 14 or part of the evaporation tank located on the bottom surface of the storage room can be arranged on the heating plate 15 (that is, the evaporation tank and the heating plate are two separate parts) , also can directly be integrated with evaporating groove on heating plate 15 (that is, evaporating groove can be the groove that is provided with on heating plate).

Further, the evaporating tank 14 can be a heat-conducting stainless steel plate, that is, an evaporating tank can be arranged on the stainless steel heating plate, which can absorb the heat generated by the ultraviolet germicidal lamp and the heat of ultraviolet rays in the storage room, and the temperature is relatively high. When the sterilization is completed and the front cover 13 is opened, the condensation in the evaporation tank 14 is heated by the heating plate and evaporated, which not only takes away the heat generated by the ultraviolet germicidal lamp, but also makes the inner side of the storage room The condensation on the wall is reduced, and a certain amount of humidity can also be added to the storage compartment.

The evaporation tank can actually be a fine texture. The inner side wall 10 of the storage compartment 1 can be provided with a plurality of smooth inclined water collection grooves 11, which are used together with the evaporation groove to collect and drain the condensation into the evaporation groove, and finally make the condensation heated and evaporated.

In a specific embodiment, the refrigerator of this embodiment may include a storage compartment and a controller. A front cover 13 may also be included. One or more ultraviolet germicidal lamps 3 can be provided above or below the shelf board 2 in the storage room 1, and the outer wall of the refrigerator or the outer surface of the door can be provided with a sterilization time display screen and an indicator light. A manual switch can also be provided on the outer wall of the refrigerator or on the outer surface of the door. When the food needs to be sterilized, you only need to open the front cover of the sterilization chamber, put the food on the light-transmitting shelf, and close the front cover 13. At this time, you can manually open the working button, or you can reach the preset temperature after the door is closed. When the time is set, the sterilization signal is automatically turned on. Then, the food in the storage compartment is automatically scanned and sterilized according to the control method described in any one of the above embodiments. At this time, the front cover 13 is always in the closed state. At this time, the indicator light arranged on the outer wall of the refrigerator or the outer surface of the door turns red, indicating that the sterilization chamber is working. Because the cavity wall of the storage compartment 1 has the effect of reflecting light, and has the effect of light transmission in combination with the hollow shelf, therefore, the light emitted by the ultraviolet germicidal lamp 3 in the cavity (storage compartment) can be reflected from the The food is irradiated from multiple angles, and it is not limited to the ultraviolet rays in the prior art that can only irradiate the surface of the food, but can penetrate the bottom of the food to sterilize the bottom of the food or places that are not easily irradiated. In this way, It can greatly improve the sterilization efficiency of food.

Since a timer can be provided in the refrigerator, when the ultraviolet germicidal lamp starts to work, the timer starts counting and displays the remaining sterilizing time on the display screen. When the sterilization is completed, the controller can automatically cut off the power supply of the ultraviolet germicidal lamp. At this time, the indicator light can change to green or other colors different from red, indicating that the sterilization is completed. At this point, the front cover 13 can be opened to take out the food. During the working process of the above-mentioned ultraviolet germicidal lamp, other modules of the refrigerator can be used normally, and the refrigerator door can also be opened and closed normally, that is, the sterilization method in the above-mentioned storage compartment is a relatively independent module combined with the refrigerator freezer .

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. A control method for refrigerator sterilization, at least one ultraviolet germicidal lamp is arranged in the storage compartment of the refrigerator, and the control method comprises: Detect that food is placed in the sterilization area of the storage compartment; Obtain a sterilization start signal; The ultraviolet germicidal lamp is turned on, the light emitted by the ultraviolet germicidal lamp is reflected through the reflective cavity wall of the storage compartment, and the food in the sterilization area is sterilized from multiple angles. 2. The control method according to claim 1, wherein, Before the step of turning on the ultraviolet germicidal lamp, it also includes: identifying the type of food and measuring the weight of the food, and determining the sterilization level according to the type and weight of the food, and the sterilization level is preset with the The turn-on time and luminous intensity of the ultraviolet germicidal lamp; The step of turning on the ultraviolet germicidal lamp includes: controlling the starting of the ultraviolet germicidal lamp according to the determined turn-on time and luminous intensity specified by the germicidal level. 3. The control method according to claim 2, wherein the step of controlling the starting of the ultraviolet germicidal lamp according to the determined turn-on time and luminous intensity specified by the sterilizing level specifically includes: When reaching a high level of sterilization, make the ultraviolet germicidal lamp irradiate the food with ultraviolet rays of a first preset intensity within a first preset time period, so as to sterilize the food; When the moderate sterilization level is reached, the ultraviolet germicidal lamp is used to irradiate the food with ultraviolet rays of a second preset intensity within a second preset time period, so as to sterilize the food; When the mild sterilization level is reached, the ultraviolet germicidal lamp is used to irradiate the food with ultraviolet rays of a third preset intensity within a third preset time period, so as to sterilize the food. 4. The control method according to claim 3, wherein the step of determining the sterilization level according to the type and weight of the food, specifically comprises: If the food is vegetables and its weight is greater than a first preset weight, or if the food is meat and its weight is greater than a second preset weight, then sterilize the food at a high sterilization level; If the food is vegetables and its weight is greater than the second preset weight and less than or equal to the first preset weight or the first preset weight, or the food is fruit and its weight is greater than the first preset weight, then use Moderate The sterilizing level sterilizes the food; If the food is vegetables and its weight is less than or equal to the second preset weight, or if the food is fruit and its weight is less than the first preset weight, the food is sterilized at a mild sterilization level. 5. The control method according to claim 3 or 4, wherein, The ultraviolet rays of the first preset intensity are 90-110uw/cm ² , and the first preset time is 35-45 minutes; The ultraviolet rays of the second preset intensity are 70-80uw/cm ² , and the second preset time is 25-35 minutes; The ultraviolet rays of the third preset intensity are 55-65uw/cm ² , and the third preset time is 20-30 minutes. 6. A refrigerator comprising: The storage compartment has a hollowed-out shelf movably connected therewith and an ultraviolet germicidal lamp arranged above or below the hollowed-out shelf; and A controller, which includes a memory and a processor, wherein the memory stores a computer program, and when the program is executed by the processor, the control method according to any one of claims 1 to 5 can be executed for the hollowing out. The food on the shelf is sterilized. 7. The refrigerator according to claim 6, wherein the inner side wall of the storage compartment is a stainless steel plate, which is configured to reflect the light emitted by the ultraviolet germicidal lamp, so as to view the hollowed out space from multiple angles. The food on the shelf is sterilized. 8. The refrigerator according to claim 6, wherein the storage compartment has an infrared sensing device for identifying the type of food and a balance for measuring the weight of the food; Wherein, the infrared sensing device includes an infrared transmitter and a receiver. 9. The refrigerator according to claim 6, wherein there are two ultraviolet germicidal lamps, which are respectively arranged above and below the hollow shelf, so as to control the top and bottom of the food on the hollow shelf. Sterilize the bottom; Wherein, the outer surfaces of the two ultraviolet germicidal lamps are covered with a vacuum heat insulation layer to reduce the heat emitted by the ultraviolet germicidal lamps from affecting the temperature in the storage compartment. 10. The refrigerator according to any one of claims 6-9, further comprising: The inner side wall of the storage compartment has a plurality of inclined sumps for collecting condensation; and the storage compartment is also provided with an evaporation tank connected to the lowest end of the sump and a a heating plate at the bottom of the storage compartment; The evaporating tank is configured to extend from the lowermost end of the water collecting tank to the heating plate for introducing the condensed dew flowing into the water collecting tank into the heating plate so as to be heated by the heating plate. The plate evaporates the condensation.