CN112890528A

CN112890528A - Display case and control method thereof

Info

Publication number: CN112890528A
Application number: CN202110178707.1A
Authority: CN
Inventors: 徐崇胜; 畅亚利; 丁进峰; 钱苏昕; 王尧
Original assignee: Shandong New Beiyang Information Technology Co Ltd; Weihai New Beiyang Digital Technology Co Ltd
Current assignee: Shandong New Beiyang Information Technology Co Ltd; Weihai New Beiyang Digital Technology Co Ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-06-04

Abstract

The application provides a display cabinet and a control method thereof, and relates to the field of storage equipment. In the embodiment of the application, the first storage area and the second storage area of the display cabinet are respectively used for storing articles at different temperatures, the first air duct is used for providing cold air for the first storage area, and the second air duct is used for providing hot air for the second storage area. An air outlet communicated with the outside of the display cabinet is arranged on the second air duct. The control method of the display cabinet can adjust the amount of hot air discharged from the air outlet to the outside of the display cabinet by adjusting the opening of the air exhaust valve based on the ambient temperature, the temperature of the first storage area or the temperature of the second storage area, so that the amount of hot air entering the second storage area is adjusted, the air temperature of the second storage area and even the air temperature in the whole display cabinet are adjusted, the load temperature of the first storage area and the load temperature of the second storage area are maintained in a reasonable range, and the energy consumption of the display cabinet in temperature adjustment is effectively reduced.

Description

Display case and control method thereof

Technical Field

The application relates to the field of storage equipment, in particular to a display cabinet and a control method thereof.

Background

In supermarkets, malls, restaurants and the like, articles such as fresh food or food materials are usually displayed or displayed through showcases. The related art provides an open type display cabinet with different temperature environments, the display cabinet comprises an article storage area with an opening, the article storage area comprises a cold area and a hot area, a refrigerating device and a heating device are arranged inside the display cabinet, cold air is generated by the refrigerating device and blown to the cold area of the article storage area through a cold air fan so as to refrigerate and keep fresh the articles in the cold area, hot air is generated by the heating device and blown to the hot area of the article storage area through a hot air fan so as to heat and preserve heat of the articles in the hot area.

However, since the cold area and the hot area are both located in the open type article storage area in the related art display case, the cooling effect of the cold area and the heating effect of the hot area are inevitably affected by each other, and both are also affected by the change of the ambient temperature, so that the related art display case has a problem that it is difficult to rapidly reach a reasonable range of the load temperature in a complicated and variable environment when operating, and the energy consumption is large in the process of adjusting the temperature.

Disclosure of Invention

The object of the present application includes, for example, providing a showcase and a control method thereof, which can maintain load temperatures of different storage regions in a reasonable interval as soon as possible according to use conditions and reduce power consumption for adjusting the temperature in the showcase.

The embodiment of the application can be realized as follows:

in a first aspect, the application provides a control method of a display cabinet, the display cabinet comprises a cabinet body and a temperature regulating system, a first air duct, a second air duct, a first storage area and a second storage area are arranged in the cabinet body, the first air duct is provided with a first air outlet communicated with the first storage area, the second air duct is provided with a second air outlet communicated with the second storage area, the temperature regulating system comprises a cold source arranged in the first air duct and a heat source arranged in the second air duct, the cold source is used for regulating the temperature of air flow in the first air duct, and the heat source is used for regulating the temperature of air flow in the second air duct, so that the first storage area and the second storage area can store articles at different temperatures; the second air duct is also provided with an air inlet and an air outlet which are communicated with the outside of the display cabinet, the heat source is positioned between the air inlet and the air outlet, the air outlet is provided with an air exhaust valve, and the air exhaust valve is used for adjusting the air exhaust amount of the air outlet, and the control method of the display cabinet comprises the following steps:

the opening degree of the exhaust valve is adjusted according to the ambient temperature, the temperature of the first storage area or the temperature of the second storage area so as to adjust the air in the cabinet body.

In an optional embodiment, the cold source comprises an evaporator, the heat source comprises a condenser, the temperature regulating system further comprises a throttling element and a compressor, and the evaporator, the compressor, the condenser and the throttling element are sequentially communicated to form a circulation loop; the method comprises the following steps of adjusting the opening degree of an exhaust valve according to the ambient temperature, the temperature of a first storage area or the temperature of a second storage area so as to adjust the air in the cabinet body, wherein the first adjustment is carried out on the air in the cabinet body in the following mode under the first operation state:

judging whether the environmental temperature is within a preset range;

under the condition that the ambient temperature is judged to be within the preset range, judging whether the cold quantity of the first storage area is sufficient or not according to the ambient temperature and the temperature of the first storage area;

and under the condition that the cold quantity in the first storage area is judged to be insufficient, the opening degree of the exhaust valve is increased.

In an alternative embodiment, the step of first conditioning the air inside the cabinet further comprises:

under the condition that the cold quantity of the first storage area is judged to be sufficient, whether the heat quantity of the second storage area is sufficient or not is judged according to the environment temperature and the temperature of the second storage area;

in the case where it is determined that the heat quantity of the second storage area is insufficient, the opening degree of the exhaust valve is reduced.

In an alternative embodiment, the heat source further comprises a heater for performing the first conditioning step on the air inside the cabinet, further comprising:

under the condition that the cold quantity of the first storage area is judged to be insufficient, whether the heat quantity of the second storage area is sufficient or not is judged according to the environment temperature and the temperature of the second storage area;

in the case where it is determined that the heat amount of the second storage area is insufficient, the heater heating is controlled.

In an optional embodiment, an air inlet valve is arranged at the air inlet, the air inlet valve is used for adjusting the air inlet amount of the air inlet, a return air channel is further arranged in the cabinet body, one end of the return air channel is communicated with the second storage area, the other end of the return air channel is communicated with the second air channel, and the control method of the showcase further comprises the following steps:

timing the heating time of the heater, acquiring the temperature of the second storage area at regular time and judging whether the temperature of the second storage area reaches the standard or not;

and when the heating time of the heater reaches the first preset time, if the temperature of the second storage area does not reach the standard, the opening degree of the air inlet valve is reduced.

In an alternative embodiment, in the first operating state, the air in the cabinet is first conditioned in a first time interval.

In an optional implementation manner, a condensing fan is further arranged in the second air duct, and the opening degree of the exhaust valve is adjusted according to the ambient temperature, the temperature of the first storage area or the temperature of the second storage area so as to adjust the air in the cabinet, and the second adjustment of the air in the cabinet is performed in the following manner in the second working state:

judging whether the environmental temperature is within a preset range;

under the condition that the environmental temperature is judged to be within the preset range, the running time of the compressor in a single period is obtained, and whether the temperature regulating system is stable or not is judged according to the running time of the compressor in the single period and the environmental temperature;

judging whether the heat of the second storage area is sufficient or not under the condition that the temperature regulating system is judged to be unstable;

if the heat of the second storage area is judged to be sufficient, the opening degree of the exhaust valve is increased, and if the heat of the second storage area is judged to be insufficient, the rotating speed of the condensing fan is increased.

In an alternative embodiment, the step of second conditioning the air inside the cabinet further comprises:

judging whether the heat of the second storage area is sufficient or not under the condition that the temperature regulating system is judged to be stable;

and under the condition that the heat of the second storage area is sufficient, judging whether the opening degree of the exhaust valve reaches the maximum, if not, increasing the opening degree of the exhaust valve, and if so, increasing the rotating speed of the condensing fan.

In an alternative embodiment, the method of controlling a display case further comprises:

after the air in the cabinet body is subjected to primary second regulation, judging whether the temperature of the first storage area is within a first preset range and judging whether the temperature of the second storage area is within a second preset range;

if the temperature of the first storage area is within a first preset range and the temperature of the second storage area is within a second preset range, second adjustment is carried out on the air in the cabinet body again after waiting for a second interval time, and if the temperature of the first storage area is not within the first preset range or the temperature of the second storage area is not within the second preset range, second adjustment is carried out on the air in the cabinet body again after waiting for a third interval time; wherein the second interval time is greater than the third interval time.

In an optional embodiment, the air inlet is provided with an air inlet valve, and the air inlet valve is used for adjusting the air inlet amount of the air inlet; the cabinet body is also internally provided with a return air channel, one end of the return air channel is communicated with the second storage area, the other end of the return air channel is communicated with the second air channel, and the control method of the showcase further comprises the following steps:

judging whether the ambient temperature is too high or too low under the condition that the ambient temperature is judged not to be within the preset range;

under the condition that the environment temperature is judged to be overhigh, the opening degrees of the air inlet valve and the air outlet valve are increased to the maximum;

and under the condition that the environment temperature is judged to be too low, the air inlet valve and the air outlet valve are closed.

In a second aspect, an embodiment of the application provides a display cabinet, which comprises a control device, a cabinet body and a temperature regulating system, wherein a first air duct, a second air duct, a first storage area and a second storage area are arranged in the cabinet body, the first air duct is provided with a first air outlet communicated with the first storage area, the second air duct is provided with a second air outlet communicated with the second storage area, the temperature regulating system comprises a cold source arranged in the first air duct and a heat source arranged in the second air duct, the cold source is used for regulating the temperature of air flow in the first air duct, and the heat source is used for regulating the temperature of air flow in the second air duct, so that the first storage area and the second storage area can store articles at different temperatures; the second wind channel still is provided with outside air intake and the air exit of intercommunication show case, and the heat source is located between air intake and the air exit, and the air exit is provided with the exhaust valve, and the exhaust valve is used for adjusting the volume of airing exhaust of air exit, and the exhaust valve is connected with controlling means electricity, and controlling means is set up to: the opening degree of the exhaust valve is adjusted according to the ambient temperature, the temperature of the first storage area or the temperature of the second storage area so as to adjust the air in the cabinet body.

The beneficial effects of the embodiment of the application include, for example:

in the embodiment of the application, the first storage area and the second storage area of the display cabinet are respectively used for storing articles at different temperatures, the first air duct is used for providing cold air for the first storage area, and the second air duct is used for providing hot air for the second storage area. An air outlet communicated with the outside of the display cabinet is arranged on the second air duct. The control method of the display cabinet can adjust the amount of hot air discharged from the air outlet to the outside of the display cabinet by adjusting the opening of the air exhaust valve based on the ambient temperature, the temperature of the first storage area or the temperature of the second storage area, so that the amount of hot air entering the second storage area is adjusted, the air temperature of the second storage area and even the air temperature in the whole cabinet are adjusted, the load temperature of the first storage area and the load temperature of the second storage area are maintained in a reasonable range, and the energy consumption of the display cabinet in temperature adjustment is effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view of a display case according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a display case of an embodiment of the present application, taken from a first viewing angle;

FIG. 3 is a schematic view of a display case in a back side view in accordance with an embodiment of the present application;

FIG. 4 is a schematic view of the air duct distribution on the back side of the display case according to an embodiment of the present application;

FIG. 5 is a cross-sectional view of the display case of one embodiment of the present application, taken from a second viewing angle;

FIG. 6 is a block diagram of the components of a display case according to one embodiment of the present application;

FIG. 7 is a flow chart illustrating a first conditioning of air within the cabinet according to one embodiment of the present application;

FIG. 8 is a block diagram of the control logic for an embodiment of the present application for a display case in a first operating state;

FIG. 9 is a flow chart illustrating a second conditioning of air within the cabinet according to an embodiment of the present application;

fig. 10 is a control logic block diagram of the display case in a second operating state according to an embodiment of the present application.

Icon: 010-showcases; 100-a cabinet body; 101-a back plate; 110 — a first storage area; 120-a second storage area; 130-layer plate; 140-a first air duct; 141-a refrigerating air inlet; 142-a first outlet; 143-an evaporation fan; 150-a second air duct; 151-air inlet; 152-an air inlet valve; 153-air outlet; 154-exhaust valve; 155-a second air outlet; 156-condensing fan; 160-return air channel; 161-an inlet end; 162-an outlet end; 163-return air fan; 200-a temperature regulating system; 210-an evaporator; 220-a compressor; 230-a condenser; 240-a heater; 300-ambient temperature detection means; 400-a first temperature detection mechanism; 500-a second temperature detection mechanism; 600-control means.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the present invention product is usually put into use, it is only for convenience of describing the present application and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

In order to meet the storage requirements of different types of articles, a cold area and a hot area are designed in the display case 010 for storing the different types of articles, the temperature of the cold area is regulated by using the cold area, and the temperature of the hot area is regulated by using the hot area. The method for adjusting the temperature of the display case 010 in the related art is relatively single, and excessively depends on the cooling of the cold source or the heating of the heat source, and the rapid temperature adjustment can only be realized by increasing the power of the cold source or the heat source. However, due to environmental influences or mutual influences between the cold area and the hot area, temperature adjustment of different areas in the showcase 010 is difficult, and it is not easy to quickly adjust the temperature to a reasonable temperature. In the process of temperature adjustment, the energy consumption is also higher.

In order to solve the above-mentioned problems in the related art, the present invention provides a showcase 010 and a control method thereof, which assist in adjusting the temperature of air in the showcase 010 by controlling the air passage where the heat source is located to communicate with air outside the showcase 010, so as to achieve efficient adjustment of the temperature in the showcase 010 and save energy consumption for temperature adjustment. In order to facilitate understanding of the control method of the showcase 010, the structure of the showcase 010 will be described first.

Fig. 1 is a schematic view of a showcase 010 in an embodiment of the present application, and fig. 6 is a block diagram of the showcase in the embodiment of the present application. Referring to fig. 1 and fig. 6, the showcase 010 of the present embodiment includes a cabinet 100 and a temperature adjustment system 200 disposed in the cabinet 100. An article storage area is disposed in the cabinet 100, and the article storage area is divided into a plurality of storage areas by the layer plate 130. In the present embodiment, a portion of the plurality of storage areas may be used for storing articles to be refrigerated (such as cold drinks and fresh foods), and this portion is the first storage area 110; another portion of the storage area may be used for storing items that need to be kept warm (e.g., cooked food), and this portion is the second storage area 120. The temperature regulating system 200 is used to regulate the temperature of the first storage area 110 and the second storage area 120. As shown in fig. 1, a plurality of sheets 130 are spaced apart in a vertical direction to divide a plurality of storage units arranged in the vertical direction, the sheets 130 have a support surface for supporting an article, and one or more storage units form a first storage area 110 or a second storage area 120, and as shown in fig. 1, in the present embodiment, the first storage area 110 includes three storage units, the second storage area 120 includes two storage units, and the second storage area 120 is located above the first storage area 110. Since the density of the hot air is low and the density of the cold air is high, by disposing the second storage area 120 above the first storage area 110, the convection of air between the first storage area 110 and the second storage area 120 can be reduced as much as possible, thereby reducing the influence of the temperature between the first storage area 110 and the second storage area 120 to some extent.

It should be understood that the dividing manner of the plurality of storage units is not limited to the above form, and in alternative embodiments, a plurality of storage units sequentially arranged in the horizontal direction may be divided by a partition plate vertically arranged.

In the present embodiment, the temperature of the first storage area 110 is brought to a desired temperature by blowing cold air into the first storage area 110, and the temperature of the second storage area 120 is brought to a desired temperature by blowing hot air into the second storage area 120. Fig. 2 is a cross-sectional view of the display case 010 from a first perspective in an embodiment of the present invention, as shown in fig. 2, a first air duct 140 and a second air duct 150 are disposed in the display case 010, and the first air duct 140 and the second air duct 150 are both located outside the article storage area, specifically, near the back side of the cabinet 100. The temperature adjusting system 200 includes a cold source disposed in the first air duct 140 and a heat source disposed in the second air duct 150. The first air duct 140 has a first air outlet 142, the first air outlet 142 is communicated with the first storage area 110, and the first air duct 140 discharges the air cooled by the cold source to the first storage area 110 through the first air outlet 142; the second air duct 150 has a second air outlet 155, the second air outlet 155 is communicated with the second storage area 120, and the second air duct 150 discharges the air heated by the heat source to the second storage area 120 through the second air outlet 155. As shown in fig. 1, in the present embodiment, the cabinet 100 further includes a vertical back plate 101, the back plate 101 forms an inner wall of the article storage area in the depth direction, and a portion of the first air duct 140 and a portion of the second air duct 150 are located on a side of the back plate 101 departing from the article storage area. The article storage area is provided with an opening for a user to access articles, and the opening is positioned on the other side of the article storage area opposite to the back plate 101.

As shown in fig. 2, the first air outlet 142 is disposed on the highest layer plate 130 in the entire first storage area 110, so that the cool air can be downwardly settled after being released from the layer plate 130, thereby cooling the entire first storage area 110. An air inlet (referred to as a cooling air inlet 141 for short) of the first air duct 140 is also located inside the cabinet 100, specifically below the first storage area 110, and the cooling air inlet 141 can suck the cold air sinking to the bottom of the first storage area 110. The cold air passes through the whole first storage area 110 from top to bottom, absorbs heat of the articles in the first storage area 110, and the temperature of the cold air is raised compared with that of the cold air sent out from the first air outlet 142, and then the cold air enters the first air duct 140 again to exchange heat with the cold source, and is sent into the first storage area 110 after being cooled again, so that circulation of the cold air in the first storage area 110 is realized. The hollow arrows in the first duct 140 and the first storage 110 in fig. 2 represent the circulation direction of the cool air.

Fig. 3 is a schematic view of display case 010 from a back side perspective in one embodiment of the present application. Referring to fig. 2 and 3, in the embodiment, the second air duct 150 is provided with an air inlet 151 and an air outlet 153 communicating with the outside of the showcase 010, the heat source is located between the air inlet 151 and the air outlet 153, the air outlet 153 is provided with an air outlet valve 154, and the air outlet valve 154 is used for adjusting the air outlet amount of the air outlet 153. In this embodiment, the air inlet 151 of the second air duct 150 is located below the article storage area and faces the front side of the cabinet 100, and the second air duct 150 extends horizontally from the front side of the cabinet 100 to the back side of the cabinet 100 and then extends upward to the position corresponding to the second storage area 120 according to the flowing direction of the air flow inside the second air duct 150. In the present embodiment, the laminate 130 of the second storage area 120 is hollow, and the second outlet 155 is disposed on the laminate 130 of the second storage area 120 and on a supporting surface of the laminate 130. The hot air delivered from the laminate 130 can form an updraft to heat and retain the items placed on the laminate 130. The solid arrows in the second air duct 150 and the second storage area 120 in fig. 2 represent the circulation direction of the hot air.

In this embodiment, an air inlet valve 152 is provided at the air inlet 151, and the air inlet 151 can be opened or closed by adjusting the opening degree of the air inlet valve 152, and the air inlet amount at the air inlet 151 can be adjusted. In this embodiment, the intake valve 152 is in the form of a louver and includes a plurality of blades that can be overlapped with each other, and each blade can be driven to rotate around its rotation axis so as to change the angle at which the blade opens the intake opening 151, thereby changing the intake amount of the intake opening 151; in another embodiment, the intake valve 152 includes a flap that can be driven in a translational motion relative to the intake opening 151 to vary the area of the flap that opens the intake opening 151 and thus vary the intake volume of the intake opening 151. Of course, in other embodiments of the present application, the air inlet valve 152 may be a conventional valve having a valve body, a valve flap, etc. with the opening being controllably adjusted.

In the embodiment of the present application, the air outlet 153 may discharge a part of the air heated by the heat source in the second air duct 150 to the outside of the showcase 010. Further, the opening degree of the exhaust valve 154 is adjustable, so that the exhaust amount of the exhaust port 153 can be adjusted. In this embodiment, the specific structure of the exhaust valve 154 is similar to that of the intake valve 152, and may be in the form of a shutter, a flap capable of translating, or a conventional valve, and the exhaust valve 154 can be controllably opened or closed, and the degree of opening can be varied.

In this embodiment, the cold source includes an evaporator 210, the heat source includes a condenser 230, the temperature adjustment system 200 further includes a throttling element and a compressor 220, the evaporator 210, the compressor 220, the condenser 230 and the throttling element (not shown in the figure) are sequentially communicated to form a circulation loop, and the circulation loop has a refrigerant, which can circulate under the driving of the compressor 220. As shown in fig. 2, the evaporator 210 and the throttling element are disposed in the first air duct 140, the condenser 230 and the compressor 220 are disposed in the second air duct 150, the evaporation fan 143 is disposed in the first air duct 140 for providing power to the air flow in the first air duct 140, and the condensation fan 156 is disposed in the second air duct 150 for providing power to the air flow in the second air duct 150. When the airflow flows through the evaporator 210, heat in the airflow is transferred to the refrigerant in the evaporator 210, the refrigerant evaporates to absorb heat, the temperature of the airflow is reduced to form cold air, and finally the cold air is sent into the first storage area 110 from the first air outlet 142 to realize cold storage and fresh-keeping storage of the articles. When the air flow flows through the condenser 230, the refrigerant in the condenser 230 is liquefied and releases heat, the heat is transferred to the air flow, hot air is formed, and finally the hot air flows into the second storage area 120 through the second air outlet 155, so that heating, heat preservation and storage of the articles are realized.

The temperature adjustment system 200 provided in the embodiment of the present application adopts a heat pump system, and the refrigerant absorbs heat at the evaporator 210 and releases heat at the condenser 230, which is equivalent to transporting the heat in the first storage area 110 to the second storage area 120. Of course, in alternative embodiments, other forms such as electric heating may be adopted, and the cold source and the heat source may also be embedded in the corresponding air duct walls.

In this embodiment, the heat source further includes a heater 240 disposed in the second air duct 150, and the heater 240 is capable of heating the air flow in the second air duct 150, and has an auxiliary effect on increasing the heat of the second storage area 120, so that the second storage area 120 reaches the target temperature as soon as possible. In the present embodiment, the heater 240 may be an electric heater.

Fig. 4 is a schematic view showing the distribution of air channels on the back side of showcase 010 in an embodiment of the present invention, and fig. 5 is a sectional view of showcase 010 in a second view in an embodiment of the present invention. As shown in fig. 2, 4 and 5, a return air channel 160 is further disposed in the cabinet 100, and one end of the return air channel 160 is communicated with the second storage area 120, and the other end is communicated with the second air duct 150. The inlet end 161 of the return air duct 160 is disposed at the top of the second storage area 120, and the outlet end 162 communicates with the second duct 150 at the bottom of the cabinet 100. A return air fan 163 may be disposed within the return air duct 160 to provide motive force to the air flow. In this embodiment, the return air duct 160 extends horizontally rearward from the top of the second storage area 120, extends to the back side of the display case 010, and extends downward to the bottom of the cabinet 100 to communicate with the second air duct 150. The outlet end 162 of the return air duct 160 is located upstream of the exhaust port 153, in terms of the direction of air flow in the second air duct 150. Specifically, the outlet end 162 of the return air duct 160 is located upstream of the condenser 230 so that air passing from the return air duct 160 into the second air duct 150 can be heated again by the condenser 230. As shown in fig. 4 and 5, the return air channel 160 is divided into two branches to return air to the second air duct 150 when the air is supplied from the top to the bottom of the cabinet 100, and the second air duct 150 is located in the middle of the two branches. The hot air rises to the top of the second storage area 120 after heating the contents of the second storage area 120, then enters the return air duct 160, and re-enters the second air duct 150 through the return air duct 160. The solid arrows in the return air duct 160 in fig. 2, 4, and 5 represent the direction of the airflow in the return air duct 160.

As described above, fig. 6 is a block diagram showing the components of the showcase 010 in the embodiment of the present application. As shown in fig. 6, in the embodiment of the present application, the showcase 010 further includes an ambient temperature detection means 300, a first temperature detection means 400, a second temperature detection means 500, and a control device 600. The ambient temperature detection mechanism 300 is used for detecting the ambient temperature outside the cabinet 100, the first temperature detection mechanism 400 is used for detecting the temperature of the first storage area 110, and the second temperature detection mechanism 500 is used for detecting the temperature of the second storage area 120.

Specifically, the ambient temperature detection mechanism 300 includes an ambient temperature sensor located outside the cabinet 100, for example, disposed at the top of the cabinet 100. The first temperature detection mechanism 400 includes a first sensor disposed at a measurement point of the first storage area 110, for example, disposed in the first storage area 110 and located on the back plate 101 of the first storage area 110. The second temperature detection mechanism 500 includes a second sensor disposed at a measurement point of the second storage area 120, for example, disposed in the second storage area 120 and on the back plate 101 of the second storage area 120.

The detection results of the first temperature detection mechanism 400 and the second temperature detection mechanism 500 can reflect the temperature in the corresponding storage area, and whether the cold or heat is sufficient. In another alternative embodiment, the first temperature detecting mechanism 400 may include a third sensor disposed at the first air outlet 142 of the first air duct 140, and the first temperature detecting mechanism 400 may further detect the first outlet air temperature of the first air duct 140 through the third sensor; the second temperature detecting mechanism 500 may include a fourth sensor disposed at the second air outlet 155 of the second air duct 150, and the second temperature detecting mechanism 500 may further detect the second air outlet temperature of the second air duct 150 through the fourth sensor.

In the embodiment of the present application, the ambient temperature detecting mechanism 300, the first temperature detecting mechanism 400, the second temperature detecting mechanism 500, the temperature adjusting system 200, the exhaust valve 154, the intake valve 152, the return air fan 163, the condensing fan 156, and the evaporating fan 143 are all electrically connected to the control device 600. The control device 600 is arranged to: the opening degree of the exhaust valve 154 is adjusted according to the ambient temperature, the temperature of the first storage area 110, or the temperature of the second storage area 120 to adjust the air inside the cabinet 100.

In the embodiment of the application, a heat source is disposed in the second air duct 150 of the showcase 010, the second air duct 150 can convey hot air into the showcase 010, the second air duct 150 is communicated with the air inlet 151 and the air outlet 153, and the air exhaust valve 154 can move relative to the air outlet 153 so as to adjust the air exhaust amount of the second air duct 150 exhausting the hot air to the outside of the showcase 100, so that the control device 600 of the showcase 010 can adjust the air temperature in the showcase 100 by adjusting the air exhaust amount of the air outlet 153 by adjusting the opening degree of the air exhaust valve 154 based on the ambient temperature, the temperature of the first storage area 110, or the temperature of the second storage area 120, and the load temperatures of the first storage area 110 and the second storage area 120 are maintained in a reasonable interval, thereby effectively reducing the overall energy consumption of the showcase.

The method for controlling the showcase 010 of the embodiment of the present application can be applied to the showcase 010 of the above embodiment of the present application, and the method for controlling the showcase 010 includes adjusting the opening degree of the air discharge valve 154 according to the ambient temperature, the temperature of the first storage area 110, or the temperature of the second storage area 120, so as to adjust the air in the cabinet 100. Fig. 7 is a flow chart illustrating a first conditioning of air within the cabinet 100 according to an embodiment of the present application; fig. 8 is a logic block diagram of the control of the display case in the first operating state according to an embodiment of the present application. As shown in fig. 7 and 8, when the temperature adjusting system 200 includes the evaporator 210, the condenser 230, the throttling element and the compressor 220 to form the heat pump system, the step of adjusting the opening degree of the exhaust valve 154 according to the ambient temperature, the temperature of the first storage area 110 or the temperature of the second storage area 120 to adjust the air in the cabinet 100 may specifically include performing the first adjustment on the air in the cabinet 100 in the first operation state by:

step S110, determining whether the ambient temperature is within a preset range.

Taking the display case 010 provided in the embodiment of the present application as an example, the ambient temperature detection mechanism 300 can collect the ambient temperature and feed back the ambient temperature to the control device 600, and the control device 600 determines whether the ambient temperature is within the preset range. Optionally, the environmental temperature being within the preset range means that the environmental temperature is greater than the minimum threshold T_L，0And the ambient temperature is less than the maximum threshold T_H，0E.g. minimum threshold T_L，0At 20 ℃ and a maximum threshold value T_H，0The temperature was 32 ℃. When the ambient temperature is greater than or equal to the maximum threshold T_H，0Then, the control device 600 determines that the showcase 010 has only the refrigerating and refreshing functions at this time, and does not need to consider the heating and heat-insulating functions of the showcase 010 at this time; when the ambient temperature is less than or equal to the lowest threshold T_L，0At this time, the control device 600 determines that the showcase 010 has only the heating and warm-keeping function, and at this time, the refrigerating and fresh-keeping function of the showcase 010 does not need to be taken into consideration.

And step S120, judging whether the cold quantity of the first storage area is sufficient or not according to the ambient temperature and the temperature of the first storage area under the condition that the ambient temperature is judged to be within the preset range.

Taking the showcase 010 of the embodiment as an example, in one embodiment, in the first operation state, the control device 600 detects the first warm-up time t of the first storage area 110 at regular time (for example, at intervals of 0.5s)_L，aAnd a second pull-up time t of the second storage area 120_H，aAnd according to the first temperature-raising time t of the first storage area 110_L，aAnd a first time threshold t_set，LThe magnitude relationship of (b) determines whether the cooling capacity of the first storage area 110 is sufficient. In addition, the second temperature t of the second storage area 120 can be used_H，aAnd a second time threshold t_set，HThe magnitude relationship of (a) determines whether the heat quantity of the second storage area 120 is sufficient. Wherein, the first temperature-raising time t of the first storage area 110_L，aThe time when the temperature of the measuring point of the first storage area 110 is reduced by a preset value (for example, 2 ℃), and the second temperature-pulling time t of the second storage area 120_H，_aIs referred to asThe temperature of the test point of the second memory area 120 is raised by a preset value (for example, 2 c) for a certain period of time. When the first temperature-raising time t_L，aGreater than or equal to a first time threshold t_set，LWhen the temperature is not lower than the first temperature, the control device 600 determines that the cooling capacity of the first storage area 110 is insufficient, and when the temperature is not higher than the first temperature, the control device controls the temperature to be lower than the second temperature_L，aLess than a first time threshold t_set，LWhen the temperature is low, the control device 600 determines that the cooling capacity of the first storage area 110 is sufficient, and when the second temperature-raising time t is up_H，aGreater than or equal to a second time threshold t_set，HWhen the heat quantity in the second storage area 120 is insufficient, the control device 600 judges that the heat quantity in the second storage area is insufficient, and when the temperature is raised for the second temperature t_H，aLess than a second time threshold t_set，HAt this time, the control device 600 determines that the amount of heat in the second storage area 120 is sufficient. Optionally, the control device 600 detects the ambient temperature at regular intervals (e.g. 0.5s per interval), the first time threshold t_set，LAnd a second time threshold t_set，HAccording to the environment temperature detected by the environment temperature detecting mechanism 300, for example, the control device 600 may calculate the first time threshold t according to the current environment temperature and the preset function respectively after acquiring the current environment temperature_set，LAnd a second time threshold t_set，H(ii) a Alternatively, after acquiring the current ambient temperature, the control device 600 looks up the table according to the current ambient temperature, and acquires the first time threshold t corresponding to the current ambient temperature through the pre-stored table of correspondence between the ambient temperature and the first time threshold_set，LAnd acquiring a second time threshold t corresponding to the current ambient temperature according to the pre-stored corresponding relation between the ambient temperature and the second time threshold_set，H。

In another alternative embodiment, for example, in a case that the first temperature detection mechanism 400 includes a third sensor disposed at the first air outlet 142 of the first air duct 140, and the second temperature detection mechanism 500 includes a fourth sensor disposed at the second air outlet 155 of the second air duct 150, the control device 600 may obtain the first outlet air temperature of the first air duct 140 through the third temperature sensor, and determine whether the cooling capacity of the first storage area 110 is sufficient according to the magnitude relationship between the first outlet air temperature and the first temperature threshold, obtain the second outlet air temperature of the second air duct 150 through the fourth sensor, and determine whether the cooling capacity of the second storage area 120 is sufficient according to the magnitude relationship between the second outlet air temperature and the second temperature threshold. When the first outlet air temperature is less than or equal to the first temperature threshold, the control device 600 determines that the cold quantity of the first storage area 110 is sufficient, and when the first outlet air temperature is greater than the first temperature threshold, the control device 600 determines that the cold quantity of the first storage area 110 is insufficient; when the second outlet air temperature is greater than or equal to the second temperature threshold, the control device 600 determines that the heat in the second storage area 120 is sufficient, and when the second outlet air temperature is less than the second temperature threshold, the control device 600 determines that the heat in the second storage area 120 is insufficient.

And step S130, increasing the opening degree of the exhaust valve under the condition that the cold quantity of the first storage area is judged to be insufficient.

Taking the showcase 010 of the embodiment of the present application as an example, when it is determined that the cooling capacity of the first storage area 110 is insufficient, the control device 600 controls the air exhaust valve 154 to increase the opening degree thereof, so as to achieve the effect of increasing the air exhaust capacity of the air exhaust opening 153. Under the condition that the cooling capacity of the first storage area 110 is judged to be insufficient, the air exhaust amount of the air exhaust opening 153 is increased by controlling the air exhaust valve 154, the exhaust amount of hot air in the second air duct 150 can be increased, the temperature of the condenser 230 is reduced, the temperature of a refrigerant circulating in the temperature adjusting system 200 is further reduced, the cooling capacity of the whole temperature adjusting system 200 is improved, the cooling capacity of the first storage area 110 is further improved, the load temperature of the first storage area 110 in the first running state reaches the standard as soon as possible, and the overall energy consumption of the display cabinet 010 is further reduced.

Optionally, when the showcase 010 is turned on, the control device 600 controls the exhaust valve 154 to move, so that the exhaust valve 154 is in a preset state (for example, the preset state includes full open, full close, opening a set degree, and the like), and when the showcase 010 is in the first operation state and the control device 600 needs to increase the exhaust amount of the exhaust port 153, the opening degree of the exhaust valve 154 is controlled to increase, for example, the exhaust valve 154 is in a louver type, and the control device 600 controls the exhaust valve 154 to move, so that the opening angle of the vane of the exhaust valve 154 is increased or decreased by a set value on the current opening angle. For example, in one embodiment, the degree of opening the air outlet 153 of the air outlet valve 154 when the opening angle is maximum is set to 100%, and in the case that the cooling capacity of the first storage area 110 is determined to be insufficient, the movement of the air outlet valve 154 is controlled to increase the degree of opening the air outlet 153 of the air outlet valve 154 by a first preset value, for example, the first preset value is 5%, 7%, 10%, etc.

In an alternative embodiment of the present application, the operation state of the showcase 010 is determined as the first operation state and the second operation state according to a time interval from the current time to the time when the showcase 010 is powered on. The showcase 010 in the first operation state is an operation state of the showcase 010 when a time interval from a current time to a power-on time of the showcase 010 does not exceed a set time, and in the operation state, the temperature adjusting system 200 is just started, the cold air sent by the first air duct 140 cools the first storage area 110, the temperature of the first storage area 110 continuously decreases, the hot air sent by the second air duct 150 heats the second storage area 120, and the temperature of the second storage area 120 continuously increases. The time interval between the current time and the power-on time of the showcase 010 exceeds the set time, and in the second working state, the temperature adjusting system 200 is stable, the temperature of the first storage area 110 is substantially maintained within the first preset range (e.g., 0 ℃ to 10 ℃), and the temperature of the second storage area 120 is substantially maintained within the second preset range (e.g., 40 ℃ to 50 ℃). Alternatively, the set time for determining the first operating state and the second operating state is determined by a predetermined test, for example, the set time is 8 hours or 10 hours.

In an alternative embodiment, the step of first conditioning the air inside the cabinet 100 further comprises: under the condition that the cold quantity of the first storage area 110 is judged to be sufficient, judging whether the heat quantity of the second storage area 120 is sufficient according to the ambient temperature and the temperature of the second storage area 120; in the case where it is determined that the heat quantity of the second storage area 120 is insufficient, the opening degree of the exhaust valve 154 is decreased. In this embodiment, when it is determined that the cooling capacity of the first storage area 110 is sufficient but the heat capacity of the second storage area 120 is insufficient, the opening degree of the exhaust valve 154 is reduced to further reduce the amount of hot air discharged from the second air duct 150, so as to increase the amount of hot air blown into the second storage area 120 by the condensing fan 156, further increase the heating capacity of the second storage area 120, and enable the load temperature of the second storage area 120 to reach the standard as soon as possible when the showcase 010 is in the first operating state, thereby reducing the overall energy consumption of the showcase 010.

Further, in the embodiment where the intake port 151 is provided with the intake valve 152, in the case where it is determined that the cooling capacity of the first storage area 110 is sufficient and the heating capacity of the second storage area 120 is insufficient, the control device 600 only controls the opening degree of the exhaust valve 154 to be decreased, and does not control the intake valve 152 to move, that is, the intake rate of the intake port 151 is kept constant. In this case, the air in the cabinet 100 is adjusted only by adjusting the air discharge amount of the air discharge port 153 while keeping the air supply amount of the air inlet 151 unchanged, which is advantageous to simplify the control process.

Further, in the case that it is determined that the cooling capacity of the first storage area 110 is sufficient and the heating capacity of the second storage area 120 is sufficient, the control device 600 does not control the exhaust valve 154 and the intake valve 152 to move, that is, the exhaust capacity of the exhaust opening 153 and the intake capacity of the intake opening 151 are kept unchanged, so that the first storage area 110 keeps the current cooling capacity and the second storage area 120 keeps the current heating capacity.

In embodiments where the heat source of display case 010 further includes heater 240, the step of first conditioning the air within cabinet 100 may further include: under the condition that the cold quantity of the first storage area 110 is judged to be insufficient, whether the heat quantity of the second storage area 120 is sufficient or not is judged according to the ambient temperature and the temperature of the second storage area 120; in the case where it is determined that the heat quantity of the second storage area 120 is insufficient, the heater 240 is controlled to heat. In this embodiment, when it is determined that the cooling capacity of the first storage area 110 is insufficient, the opening degree is increased by controlling the exhaust valve 154, so as to increase the exhaust amount of the hot air in the second air duct 150, thereby reducing the temperature of the condenser 230, so as to increase the cooling capacity of the whole temperature adjusting system 200. However, if the amount of heat in the second storage area 120 is insufficient, the heating capacity of the second storage area 120 will be lower after increasing the amount of air discharged from the air outlet 153, and therefore, in this case, the control device 600 controls the electric heater of the second air duct 150 to heat, so that the amount of heat generated by the electric heater compensates for the amount of heat in the second storage area 120, and the load temperature of the second storage area 120 reaches the standard as soon as possible.

Further, in the case that it is determined that the cooling capacity of the first storage area 110 is insufficient and the heating capacity of the second storage area 120 is sufficient, the control device 600 only controls the exhaust valve 154 to increase the opening degree, and does not control the intake valve 152 to move, that is, the intake volume of the intake port 151 maintains the current volume. In this case, the air in the cabinet 100 is adjusted only by adjusting the air discharge amount of the air discharge port 153 while keeping the air supply amount of the air inlet 151 unchanged, which is advantageous to simplify the control process.

In an embodiment where the showcase 010 is provided with the return air passage 160, the method of controlling the showcase 010 may further include: timing the heating time of the heater 240, acquiring the temperature of the second storage area 120 at regular time and judging whether the temperature of the second storage area 120 reaches the standard; when the heating time of the heater 240 reaches the first preset time t_danger，0Meanwhile, if the temperature of the second storage area 120 does not reach the standard, the opening degree of the air inlet valve 152 is reduced.

Specifically, the control device 600 acquires the temperature of the second storage area 120 output by the second sensor of the second temperature detection mechanism 500, and determines whether the temperature of the second storage area 120 is greater than or equal to a first reaching temperature (e.g., 40 ℃), wherein when the temperature of the second storage area 120 is greater than or equal to the first reaching temperature, it is determined that the temperature of the second storage area 120 reaches the first reaching temperature, and when the temperature of the second storage area 120 is less than the first reaching temperature, it is determined that the temperature of the second storage area 120 does not reach the first reaching temperature. When the heating time of the heater 240 reaches the first preset time t_danger，0If the temperature of the second storage area 120 does not reach the standard, the opening degree is reduced by controlling the air inlet valve 152, so that the amount of air entering the second air duct 150 from the outside of the cabinet body 100 is reduced, the temperature of hot air in the second air duct 150 is increased, the heating capacity of the second storage area 120 is further increased, and the load temperature of the second storage area 120 reaches the standard as soon as possible when the display cabinet 010 is in the first running state.

Further, the control method of the showcase 010 may further include: when the heating time of the heater 240 reaches the second preset time t_danger，1If the temperature of the second storage area 120 has not yet reached the first target value, the determination threshold is relaxed and the output is madeOutputting alarm information for relaxing the judgment threshold, wherein the second preset time t_danger，1Is more than the first preset time t_danger，0Relaxing the decision threshold means that the first achievement value is modified and the decision threshold for achieving the second storage area 120 is decreased, for example, the first achievement value is decreased by 1 ℃ so that the first achievement value is changed from 40 ℃ to 39 ℃. By such arrangement, when the showcase 010 is in the first operation state, the load temperature of the second storage area 120 reaches the standard as soon as possible under the condition that a part of the heating and heat-preserving effect of the second storage area 120 is slightly lost, so that the energy consumption of the whole showcase 010 is reduced, and meanwhile, the alarm information is output, so that the judgment threshold value for the staff to know that the temperature of the second storage area 120 of the showcase 010 reaches the standard is widened, and the staff can adopt a certain means to adjust or maintain under the condition that the heating and heat-preserving effect of the second storage area 120 of the showcase 010 is not satisfied.

Further, the control method of the showcase 010 may further include: when the heating time of the heater 240 reaches the second preset time t_danger，1If the temperature of the second storage area 120 reaches the first standard temperature, the electric heater is controlled to stop heating.

In an alternative embodiment, the first conditioning of the air within the cabinet 100 is performed at a first interval time period in the first operating state. Specifically, in the first operation state, the control device 600 performs the first adjustment on the air in the cabinet 100 once through the above-mentioned embodiment at every first interval time, and optionally, the first interval time is 20 minutes, 30 minutes, 40 minutes, 50 minutes, and the like.

The above description describes a manner of first conditioning air in the cabinet 100 in the first operational state of the showcase 010, and a control method of the showcase 010 in the second operational state is described below. FIG. 9 is a flow chart illustrating a second conditioning of the air within the cabinet 100 according to an embodiment of the present application; fig. 10 is a control logic block diagram of the showcase 010 in the second operation state according to an embodiment of the present application. As shown in fig. 9 and 10, in an alternative embodiment of the present application, the step of adjusting the opening degree of the exhaust valve 154 according to the ambient temperature, the temperature of the first storage area 110, or the temperature of the second storage area 120 to adjust the air inside the cabinet 100 further comprises performing a second adjustment on the air inside the cabinet 100 in the second operating state by:

step S210, determining whether the ambient temperature is within a preset range. This step can refer to the description of step S110, which is not described herein.

And step S220, acquiring the running time of the compressor in a single period under the condition that the environmental temperature is judged to be in the preset range, and judging whether the temperature regulating system is stable or not according to the running time of the compressor in the single period and the environmental temperature.

Taking the showcase 010 provided in the embodiment of the present application as an example, the control device 600 determines whether the temperature adjustment system 200 including the compressor 220, the condenser 230, the throttling element, and the evaporator 210 is stable or not, according to the operation time of the compressor 220 in a single cycle. Specifically, the control device 600 obtains the operation time t of the compressor 220 in a single cycle_sAnd according to t_sWith a predetermined running time threshold t_set，aDetermines whether the temperature regulation system 200 is stable, wherein the operation time t of the compressor 220 in a single cycle_sLess than a predetermined running time threshold t_set，aWhen the control device 600 determines that the temperature adjusting system 200 is stable, the operation time t of the compressor 220 in a single cycle is_sGreater than or equal to a preset running time threshold t_set，aIn the meantime, the control device 600 determines that the temperature control system 200 is unstable. Optionally, the running time threshold t is preset_set，aDetermined according to the current ambient temperature detected by the ambient temperature detecting mechanism 300, for example, the control device 600 may calculate the preset operation time threshold t according to the current ambient temperature by using a preset function according to the current ambient temperature after acquiring the current ambient temperature_set，aOr, after acquiring the current ambient temperature, the control device 600 looks up the table according to the current ambient temperature, and acquires the preset operation time threshold t corresponding to the current ambient temperature through the pre-stored correspondence table between the ambient temperature and the preset operation time threshold_set，a。

And step S230, judging whether the heat quantity of the second storage area is sufficient or not under the condition that the temperature regulating system is judged to be unstable.

Taking the showcase 010 provided in the embodiment of the present application as an example, optionally, when the showcase 010 is in the second working state, the control device 600 determines whether the lowest temperature of the second storage area 120 is greater than or equal to the second standard temperature T_set,HTo determine whether the heat of the second storage area 120 is sufficient. Specifically, the control device 600 determines the lowest temperature T of the second storage area 120 in this state according to the temperature value of the second storage area 120 outputted by the second temperature detection mechanism 500_H,aThe lowest temperature T of the second storage area 120 is judged_H,aWhether it is greater than or equal to the second attainment temperature T_set,HWherein, when the lowest temperature T of the second storage area 120 is reached_H,aGreater than or equal to the second attainment temperature T_set,HWhen the heat quantity of the second storage area 120 is determined to be sufficient, the lowest temperature T of the second storage area 120 is determined_H,aLess than the second temperature T_set,HThen, it is determined that the heat quantity of the second storage area 120 is insufficient. Optionally, the second attainment temperature T_set,HAccording to the current ambient temperature detected by the ambient temperature detecting means 300, for example, the control device 600 may calculate the second attainment temperature T according to the current ambient temperature using a preset function after acquiring the current ambient temperature_set,HOr, after acquiring the current ambient temperature, the control device 600 looks up the table according to the current ambient temperature, and acquires the second standard temperature T corresponding to the current ambient temperature through the pre-stored correspondence table between the ambient temperature and the second standard temperature_set,H。

And step S240, if the heat of the second storage area is judged to be sufficient, increasing the opening degree of the exhaust valve, and if the heat of the second storage area is judged to be insufficient, increasing the rotating speed of the condensing fan.

In this embodiment, when the temperature adjustment system 200 is determined to be unstable, if it is determined that the heat in the second storage area 120 is sufficient, the opening degree is increased by controlling the exhaust valve 154, so that the exhaust amount of hot air in the second air duct 150 is increased to lower the temperature of the condenser 230, and further, the cooling capacity of the entire temperature adjustment system 200 is increased, and the temperature adjustment system 200 is stabilized as soon as possible. If the heat in the second storage area 120 is insufficient, the air volume discharged from the second air duct 150 is increased by increasing the rotation speed of the condensing fan 156, so that the temperature of the condenser 230 is reduced, the temperature adjusting system 200 is stabilized as soon as possible, and the air volume discharged from the second air outlet 155 of the second air duct 150 is increased, the heat in the second storage area 120 is increased, and the load temperature in the second storage area 120 reaches the standard as soon as possible.

In an alternative embodiment, the step of second conditioning the air inside the cabinet 100 further comprises: under the condition that the temperature adjusting system 200 is judged to be stable, whether the heat of the second storage area 120 is sufficient is judged; when the heat in the second storage area 120 is determined to be sufficient, it is determined whether the opening of the exhaust valve 154 reaches the maximum, if not, the opening of the exhaust valve 154 is increased, and if so, the rotation speed of the condensing fan 156 is increased. In this embodiment, in the case where the system is stable, if it is determined that the heat in the second storage area 120 is sufficient, in order to prevent the temperature of the condenser 230 from being excessively high to affect the cooling effect of the first storage area 110, when the second air conditioning is performed, the hot air discharge amount of the second air duct 150 is increased by increasing the degree to which the air discharge valve 154 opens the air discharge port 153 or increasing the rotation speed of the condensing fan 156, so that the temperature adjusting system 200 is kept stable.

Further, in the case that the temperature adjusting system 200 is stable, if it is determined that the amount of heat in the second storage area 120 is insufficient, it indicates that the second storage area 120 is still in the temperature-raising state, at this time, the control device 600 maintains the current control strategy, that is, the air inlet valve 152 and the air outlet valve 154 maintain the current state, and the condensing fan 156 and the evaporating fan 143 maintain the current rotation speed.

In an alternative embodiment, the method of controlling the showcase 010 further includes: after the air in the cabinet 100 is subjected to the first adjustment, determining whether the temperature of the first storage area 110 is within a first preset range and determining whether the temperature of the second storage area 120 is within a second preset range; if the temperature of the first storage area 110 is within a first preset range and the temperature of the second storage area 120 is within a second preset range, second adjusting the air in the cabinet 100 again after waiting for a second interval time, and if the temperature of the first storage area 110 is not within the first preset range or the temperature of the second storage area 120 is not within the second preset range, second adjusting the air in the cabinet 100 again after waiting for a third interval time; wherein the second interval time is greater than the third interval time. Optionally, after the air in the cabinet 100 is subjected to the second adjustment once, the temperature of the first storage area 110 and the temperature of the second storage area 120 are acquired after waiting for a set time (for example, 30 minutes), and it is determined whether the temperature of the first storage area 110 is within the first preset range and whether the temperature of the second storage area 120 is within the second preset range.

In this embodiment, after the air in the cabinet 100 is secondarily conditioned once, if the temperature of the first storage area 110 satisfies the cooling requirement and the temperature of the second storage area 120 satisfies the heating requirement, the next secondary conditioning is performed on the air in the cabinet 100 after a longer time (e.g., 2h), and if the temperature of the first storage area 110 does not satisfy the cooling requirement or the temperature of the second storage area 120 does not satisfy the heating requirement, the next secondary conditioning is performed on the air in the cabinet 100 after a shorter time (e.g., 30 min). Through such setting, can adjust the cycle of carrying out the second regulation to the air in the cabinet body 100 according to actual conditions, make the working method of show case 010 more nimble, reduce the complete machine energy consumption of show case 010.

In an embodiment where the air inlet 151 is provided with an air inlet valve 152 and the cabinet 100 is provided with an air return channel 160, the method for controlling the showcase 010 may further include: judging whether the ambient temperature is too high or too low under the condition that the ambient temperature is judged not to be within the preset range; in the case where it is determined that the ambient temperature is too high, the opening degrees of the intake valve 152 and the exhaust valve 154 are increased to the maximum; when it is determined that the ambient temperature is too low, the intake valve 152 and the exhaust valve 154 are closed.

When the ambient temperature is greater than or equal to the maximum threshold T_H，0In this case, the control device 600 controls the air inlet valve 152 to open the air inlet 151 to the maximum (fully open) to maximize the air inlet amount of the air inlet 151, and controls the air outlet valve 154 to open the air outlet 153 to the maximum (fully open) to maximize the air outlet amount of the air outlet 153. Tong (Chinese character of 'tong')Through such an arrangement, the heat generated by the condenser 230 is discharged out of the second air duct 150 as much as possible, so that the temperature of the condenser 230 is reduced as much as possible, and the refrigeration effect of the temperature adjusting system 200 is improved. When the ambient temperature is less than or equal to the lowest threshold T_L，0In this case, the control device 600 controls the air inlet valve 152 to close the air inlet 151 and controls the air outlet valve 154 to close the air outlet 153, so that the second air duct 150 and the air circulation outside the cabinet body 100 are closed, the air circulation inside the cabinet body 100 is completed by the air return duct inside the cabinet body 100, the heat loss is reduced, and the heating and heat preservation effects of the second storage area 120 are improved.

It should be noted that the showcase 010 can have only the refrigerating and refreshing functions by disconnecting the air circulation path between the article storage region and the second air passage 150 by changing the air passage state of the showcase 010 and communicating the article storage region only with the first air passage 140, or the showcase 010 can have only the heating and warming functions by disconnecting the air circulation path between the article storage region and the first air passage 140 by changing the air passage state of the showcase 010 and communicating the article storage region only with the second air passage 150.

In summary, in the embodiment of the present application, the first storage area 110 and the second storage area 120 of the showcase 010 are respectively used for storing the articles at different temperatures, the first air duct 140 is used for supplying cold air to the first storage area 110, and the second air duct 150 is used for supplying hot air to the second storage area 120. The second air duct 150 is provided with an air outlet 153 communicating with the outside of the showcase 010, and the air outlet valve 154 can adjust an air outlet amount of the second air duct 150 discharging hot air to the outside of the showcase 010 through the air outlet 153. The control method of the showcase 010 of the present application can adjust the amount of gas discharged to the second storage area 120 by adjusting the opening degree of the exhaust valve 154 based on the ambient temperature, the temperature of the first storage area 110, or the temperature of the second storage area 120, thereby adjusting the heat exchange condition in the second storage area 120, adjusting the air temperature in the second storage area 120 and even in the entire cabinet 100, and maintaining the load temperature of the first storage area 110 and the second storage area 120 in a reasonable range, thereby improving the problem that the temperatures of the first storage area 110 and the second storage area 120 are easily influenced by each other, and both are easily influenced by the ambient temperature, and effectively reducing the energy consumption of the showcase 010 in temperature adjustment.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The control method of the display cabinet is characterized in that the display cabinet comprises a cabinet body and a temperature adjusting system, a first air duct, a second air duct, a first storage area and a second storage area are arranged in the cabinet body, the first air duct is provided with a first air outlet communicated with the first storage area, the second air duct is provided with a second air outlet communicated with the second storage area, the temperature adjusting system comprises a cold source arranged in the first air duct and a heat source arranged in the second air duct, the cold source is used for adjusting the temperature of air flow in the first air duct, and the heat source is used for adjusting the temperature of air flow in the second air duct, so that the first storage area and the second storage area can store articles at different temperatures; the second air duct is also provided with an air inlet and an air outlet which are communicated with the outside of the display cabinet, the heat source is positioned between the air inlet and the air outlet, the air outlet is provided with an air exhaust valve, the air exhaust valve is used for adjusting the air exhaust amount of the air outlet, and the control method of the display cabinet comprises the following steps:

and adjusting the opening degree of the exhaust valve according to the ambient temperature, the temperature of the first storage area or the temperature of the second storage area so as to adjust the air in the cabinet body.

2. The control method of the display cabinet according to claim 1, wherein the cold source comprises an evaporator, the heat source comprises a condenser, the temperature adjusting system further comprises a throttling element and a compressor, and the evaporator, the compressor, the condenser and the throttling element are communicated in sequence to form a circulation loop; the step of adjusting the opening degree of the exhaust valve according to the ambient temperature, the temperature of the first storage area or the temperature of the second storage area to adjust the air in the cabinet body comprises the following steps of adjusting the air in the cabinet body in a first operation state:

judging whether the environmental temperature is within a preset range;

under the condition that the environment temperature is judged to be within the preset range, judging whether the cold quantity of the first storage area is sufficient or not according to the environment temperature and the temperature of the first storage area;

and under the condition that the cold quantity of the first storage area is judged to be insufficient, the opening degree of the exhaust valve is increased.

3. The method of controlling a display case of claim 2, wherein the step of first conditioning the air within the case further comprises:

under the condition that the cold quantity of the first storage area is judged to be sufficient, judging whether the heat quantity of the second storage area is sufficient or not according to the environment temperature and the temperature of the second storage area;

and reducing the opening degree of the exhaust valve under the condition that the heat quantity of the second storage area is judged to be insufficient.

4. The method of controlling a display case of claim 2, wherein the heat source further comprises a heater, and the step of first conditioning the air within the case further comprises:

and controlling the heater to heat in the case that the heat quantity of the second storage area is determined to be insufficient.

5. The method for controlling a display cabinet according to claim 4, wherein an air inlet valve is provided at the air inlet, the air inlet valve is used for adjusting the air inlet amount of the air inlet, a return air channel is further provided in the cabinet, one end of the return air channel is communicated with the second storage area, and the other end of the return air channel is communicated with the second air channel, the method for controlling a display cabinet further comprises:

and when the heating time of the heater reaches a first preset time, if the temperature of the second storage area does not reach the standard, reducing the opening of the air inlet valve.

6. The method for controlling a display case according to claim 2, wherein a condensing fan is further provided in the second air duct, and the step of adjusting the opening degree of the exhaust valve according to the ambient temperature, the temperature of the first storage area or the temperature of the second storage area to adjust the air in the cabinet further comprises a step of second adjusting the air in the cabinet in a second operating state by:

judging whether the environment temperature is within the preset range or not;

under the condition that the environment temperature is judged to be in the preset range, the running time of the compressor in a single period is obtained, and whether the temperature regulating system is stable or not is judged according to the running time of the compressor in the single period and the environment temperature;

judging whether the heat of the second storage area is sufficient or not under the condition that the temperature adjusting system is judged to be unstable;

and if the heat of the second storage area is judged to be sufficient, increasing the opening degree of the exhaust valve, and if the heat of the second storage area is judged to be insufficient, increasing the rotating speed of the condensing fan.

7. The method of controlling a display case of claim 6, wherein the step of second conditioning the air within the case further comprises:

judging whether the heat of the second storage area is sufficient or not under the condition that the temperature adjusting system is judged to be stable;

and under the condition that the heat of the second storage area is sufficient, judging whether the opening degree of the exhaust valve reaches the maximum, if not, increasing the opening degree of the exhaust valve, and if so, increasing the rotating speed of the condensation fan.

8. The control method of the showcase according to claim 6 or 7, further comprising:

after the air in the cabinet body is subjected to the second adjustment for the first time, judging whether the temperature of the first storage area is within a first preset range and judging whether the temperature of the second storage area is within a second preset range;

if the temperature of the first storage area is within the first preset range and the temperature of the second storage area is within the second preset range, the second adjustment is performed on the air in the cabinet body again after waiting for a second interval time, and if the temperature of the first storage area is not within the first preset range or the temperature of the second storage area is not within the second preset range, the second adjustment is performed on the air in the cabinet body again after waiting for a third interval time; wherein the second interval time is greater than the third interval time.

9. The control method of the showcase according to claim 2 or 6, wherein the air inlet is provided with an air inlet valve for adjusting an air inlet amount of the air inlet; the cabinet body is also internally provided with a return air channel, one end of the return air channel is communicated with the second storage area, and the other end of the return air channel is communicated with the second air channel, and the control method of the display cabinet further comprises the following steps:

under the condition that the environment temperature is judged not to be in the preset range, judging whether the environment temperature is too high or too low;

10. A display cabinet is characterized by comprising a control device, a cabinet body and a temperature regulating system, wherein a first air duct, a second air duct, a first storage area and a second storage area are arranged in the cabinet body, the first air duct is provided with a first air outlet communicated with the first storage area, the second air duct is provided with a second air outlet communicated with the second storage area, the temperature regulating system comprises a cold source arranged in the first air duct and a heat source arranged in the second air duct, the cold source is used for regulating the temperature of air flow in the first air duct, and the heat source is used for regulating the temperature of air flow in the second air duct, so that articles can be stored in the first storage area and the second storage area at different temperatures; the second wind channel still is provided with the intercommunication outside air intake and the air exit of show case, the heat source is located the air intake with between the air exit, the air exit is provided with the exhaust valve, the exhaust valve is used for adjusting the volume of airing exhaust of air exit, the exhaust valve with the controlling means electricity is connected, controlling means is set up to: and adjusting the opening degree of the exhaust valve according to the ambient temperature, the temperature of the first storage area or the temperature of the second storage area so as to adjust the air in the cabinet body.