WO2023185937A1

WO2023185937A1 - Refrigerator and control method therefor

Info

Publication number: WO2023185937A1
Application number: PCT/CN2023/084744
Authority: WO
Inventors: 赵斌堂; 费斌; 朱小兵
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2022-04-02
Filing date: 2023-03-29
Publication date: 2023-10-05
Also published as: CN116928988A

Abstract

The present invention relates to a refrigerator and a control method therefor. The control method comprises: when a first indication signal is acquired, blowing to a buffer solution storage tank a cooling airflow which has been subjected to heat exchange by an evaporator of a refrigerator, wherein the first indication signal indicates that the temperature of a buffer solution in the buffer solution storage tank is too high; and when a second indication signal is acquired, heating the buffer solution storage tank or the buffer solution stored in the buffer solution storage tank, wherein the second indication signal indicates that the temperature of the buffer solution in the buffer solution storage tank is too low.

Description

Refrigerator and control method thereof

Technical field

The present invention relates to refrigeration and freezing technology, and in particular to a refrigerator and a control method thereof.

Background technique

With the improvement of people's living standards, it is usually necessary to detect pesticide residues, viruses, nutritional elements or other aspects of some food ingredients in daily life to obtain the status of the food materials qualitatively or quantitatively. For example, due to the abuse of pesticides, the fruits, vegetables and agricultural and sideline products we buy daily may contain excessive pesticide residues. If the excessive pesticide residues in these foods are not discovered in time, it will cause great harm to the human body after ingestion. For another example, the breastfeeding currently advocated is the best feeding for the baby only if the breast milk has normal nutritional value. However, if the wet nurse is sick, takes medicine, has surgery or other circumstances, the nutrients in the milk secreted by the wet nurse may be compromised. The element content is reduced and even viruses are produced, thus affecting the growth, development and health of the baby.

Among the many detection methods, the detection method using microfluidic biological detection technology is relatively fast and small in size, making it easy to be integrated on the refrigerator for home use. Microfluidic biological detection technology requires diluting or dissolving the sample with the help of buffer to obtain the sample liquid, and then using biological enzymes or other detection reagents to react with the sample liquid. The adequacy of the reaction between the detection reagent and the sample solution directly affects the accuracy of the detection results.

Contents of the invention

The inventors realized that detection reagents, especially enzymes, usually have better activity or performance at a specific temperature and can fully react with the sample liquid. Therefore, in order to fully react between the detection reagent and the sample liquid, directly heating the detection cell where the detection reagent is located to raise the temperature of the liquid in the detection cell to the optimal temperature will not be very satisfactory. This is because the size of the microfluidic biochip is very small, and the size of the detection pool is even smaller. The size and power of the heating device that can be used are very limited. In a low-temperature environment, it is difficult to directly heat the detection pool. Reaction requirements are not met, resulting in inaccurate test results or longer test times.

To this end, an object of the first aspect of the present invention is to overcome at least one defect of the prior art and provide a control method for a refrigerator that can fully react between the detection reagent and the sample liquid under various environmental conditions.

A further object of the first aspect of the invention is to simplify the structure of the refrigerator and reduce its cost.

The second object of the present invention is to provide a refrigerator that can fully react between the detection reagent and the sample liquid under various environmental conditions.

According to a first aspect of the present invention, the present invention provides a control method for a refrigerator. The refrigerator has a microfluidic detection system for qualitatively and/or quantitatively detecting preset detection parameters of a sample. The microfluidic detection system The detection system includes a buffer storage tank for storing detection buffer, and the control method includes:

When the first indication signal is obtained, the cooling air flow after heat exchange by the evaporator of the refrigerator is blown to the buffer storage tank, and the first indication signal is used to indicate the buffer stored in the buffer storage tank. The temperature of the liquid is too high; and

When a second indication signal is obtained, the buffer storage tank or the buffer stored in the buffer storage tank is heated. The second indication signal is used to indicate that the buffer storage tank is stored in the buffer storage tank. The buffer temperature is too low.

Optionally, the first indication signal and the second indication signal are generated in the following manner:

Obtain the temperature of the buffer stored in the buffer storage tank;

The first indication signal is generated when the temperature of the buffer stored in the buffer storage tank is higher than the maximum endpoint value of the first preset temperature range;

The second indication signal is generated when the temperature of the buffer solution stored in the buffer solution storage tank is lower than the minimum endpoint value of the first preset temperature range.

Optionally, when the temperature of the buffer liquid stored in the buffer liquid storage tank is within the first preset temperature range, stop blowing cooling air flow to the buffer liquid storage tank or stop cooling the buffer liquid storage tank. Or heating the buffer solution stored in the buffer solution storage tank.

Optionally, the refrigerator has a blowing port for allowing cooling air to flow to the buffer storage tank, a damper for selectively opening or closing the blowing port, and a blower for heating the buffer storage tank. heating device; among which

The step of blowing cooling airflow to the buffer storage tank includes: controlling the damper to open the blowing port;

The step of stopping blowing the cooling air flow to the buffer storage tank includes: controlling the damper to close the blowing port;

The step of heating the buffer storage tank or the buffer stored in the buffer storage tank includes: starting the heating device to heat the buffer storage tank, and heating the buffer storage tank through the buffer storage tank. Transferring heat to the buffer in the buffer storage tank;

The step of stopping heating the buffer storage tank or the buffer stored in the buffer storage tank includes: stopping the heating device.

Obtain the ambient temperature of the external environment where the refrigerator is located;

When the ambient temperature is higher than the maximum endpoint value of the second preset temperature range, the first indication signal is generated;

The second indication signal is generated when the ambient temperature is lower than the minimum endpoint value of the second preset temperature range.

Optionally, the refrigerator has a blowing port for cooling airflow to the buffer storage tank, and a damper that selectively opens or closes the blowing port;

The step of blowing the cooling air flow that has been heat-exchanged by the evaporator of the refrigerator to the buffer storage tank includes:

Determine the target switching ratio of the damper within a preset time period according to the ambient temperature; and

The opening and closing state of the damper is adjusted according to the target switching ratio.

Optionally, the refrigerator further includes a heating device for heating the buffer storage tank; and

The step of heating the buffer storage tank or the buffer stored in the buffer storage tank includes:

Determine the target on-stop ratio of the heating device within a preset time period according to the ambient temperature;

Control the starting and stopping of the heating device according to the target on-stop ratio.

Optionally, when the ambient temperature is within the second preset temperature range, the damper is controlled to be continuously closed and the heating device is controlled to be continuously stopped.

According to a second aspect of the present invention, the present invention also provides a refrigerator, including:

Microfluidic detection system, used for qualitative and/or quantitative detection of preset detection parameters of samples, the microfluidic The control detection system includes a buffer storage tank for storing detection buffer;

An air supply mechanism for blowing the cooling air flow after heat exchange by the evaporator of the refrigerator to the buffer storage tank;

A heating device for heating the buffer storage tank or the buffer stored in the buffer storage tank; and

A control device includes a processor and a memory. A machine executable program is stored in the memory, and when the machine executable program is executed by the processor, it is used to implement the control method described in any of the above solutions.

Optionally, the air supply mechanism includes a blowing port for allowing cooling air to flow to the buffer storage tank, and a damper that selectively opens or closes the blowing port; and

The blowing port has two open ports respectively facing the cold storage compartment of the refrigerator and the buffer storage tank. The number of the air doors is two, and the two air doors are respectively provided at the two open ports. , to synchronously open or synchronously close the two open ports.

In order to solve the problem of severely limited heating of the detection pool, the present invention does not continue to seek unnecessary breakthroughs in the direction of directly heating the detection pool, but takes a new approach to control the temperature of the buffer used to form the sample solution in advance. That is, when the temperature of the buffer liquid stored in the buffer liquid storage tank is too high, the temperature of the buffer liquid is reduced by blowing cooling airflow into the buffer liquid storage tank. When the temperature of the buffer liquid stored in the buffer liquid storage tank is too low, the temperature of the buffer liquid is reduced by heating. Buffer storage tank or heating the buffer stored in the buffer storage tank to increase the temperature of the buffer. Therefore, during detection, regardless of the external environment, the temperature of the sample liquid formed after mixing the buffer solution and the sample that is pre-controlled within an appropriate range is more suitable. The sample liquid with a suitable temperature can directly react fully with the detection reagent. Or it can fully react with the detection reagent after slight temperature adjustment, which improves the detection speed and the accuracy of the detection results.

Furthermore, the temperature of the buffer solution can be directly measured by a temperature sensor, which requires an additional temperature sensor to be installed in the buffer storage tank, which increases the cost. The inventor realized that in order to facilitate operation, the microfluidic detection system is usually installed on the door of the refrigerator, and the buffer storage tank is exposed to the environmental space. Therefore, the temperature of the buffer stored in the buffer storage tank is different from the environment of the environmental space. The temperatures are about the same. Based on this, in the preferred embodiment, the present invention directly measures the ambient temperature of the environmental space where the refrigerator is located through the ambient temperature sensor commonly used in refrigerators, thereby indirectly determining the temperature of the buffer solution. Not only can a more accurate judgment result be obtained, It also saves the number of temperature sensors, simplifies the structure of the refrigerator, and reduces its cost.

From the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will further understand the above and other objects, advantages and features of the present invention.

Description of drawings

Some specific embodiments of the invention will be described in detail below by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar parts or portions. Those skilled in the art will appreciate that these drawings are not necessarily drawn to scale. In the attached picture:

Figure 1 is a schematic structural diagram of a microfluidic detection system according to one embodiment of the present invention;

Figure 2 is a schematic structural diagram of a control method for a refrigerator according to one embodiment of the present invention;

Figure 3 is a schematic structural diagram of a control method for a refrigerator according to another embodiment of the present invention;

Figure 4 is a partial structural schematic diagram of a refrigerator according to an embodiment of the present invention;

Figure 5 is a schematic structural diagram of a control method for a refrigerator according to another embodiment of the present invention;

Figure 6 is a schematic structural diagram of a control method for a refrigerator according to yet another embodiment of the present invention;

Figure 7 is a schematic structural diagram of a control method for a refrigerator according to yet another embodiment of the present invention;

Figure 8 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

Figure 9 is a schematic structural block diagram of a refrigerator according to an embodiment of the present invention.

Detailed ways

The present invention first provides a method for controlling a refrigerator. The refrigerator of the present invention has a microfluidic detection system for qualitatively and/or quantitatively detecting preset detection parameters of samples. Specifically, the preset detection parameters may be, for example, pesticide residue parameters used to indicate whether the pesticide residue amount exceeds the standard and/or a specific value of the pesticide residue amount, nutritional parameters used to indicate whether the nutrient element reaches the standard and/or the specific content of the nutrient element. , specific substance parameters used to indicate whether a specific harmful substance (such as a specific virus) exceeds the standard and/or the specific content, etc.

Figure 1 is a schematic structural diagram of a microfluidic detection system according to an embodiment of the present invention. The microfluidic detection system 10 may include a buffer storage tank 11 for storing a detection buffer. It can be understood that in some embodiments, the microfluidic detection system 10 may also optionally include a microfluidic biochip 12 with a detection pool, a sample stage 13 for placing the sample cup 2, and a driving buffer. The buffer in the storage tank 11 flows to the buffer driving device 14 of the sample cup, the sample liquid driving device 15 for driving the sample liquid into the microfluidic biochip 12, and the like. Among them, the sample cup 2 is used for users to place samples, receive buffer driven by the buffer driving device, etc.

Taking the microfluidic detection system 10 with the above structure as an example, after the user puts the sample into the sample cup 2, the buffer driving device 14 drives the buffer in the buffer storage tank 11 to flow to the sample cup 2. After the sample and the buffer are mixed, A sample liquid is formed, and the sample liquid driving device 15 drives the sample liquid into the microfluidic biochip 12 and then completes reactions, detection, etc. in the microfluidic biochip 12 .

Figure 2 is a schematic structural diagram of a control method for a refrigerator according to an embodiment of the present invention. In some embodiments, the control method of the present invention includes:

Step S10, determine whether the first indication signal is obtained; the first indication signal is used to indicate that the temperature of the buffer solution stored in the buffer storage tank 11 is too high; if yes, go to step S20; if not, go to step S30;

Step S20, blow the cooling air flow that has been heat-exchanged by the evaporator of the refrigerator to the buffer storage tank 11;

Step S30, determine whether a second indication signal is obtained; the second indication signal is used to indicate that the temperature of the buffer solution stored in the buffer storage tank 11 is too low; if yes, go to step S40; if not, go to step S10; as well as

In step S40, the buffer storage tank 11 or the buffer stored in the buffer storage tank 11 is heated.

That is to say, when the temperature of the buffer liquid stored in the buffer liquid storage tank 11 is too high, the cooling air flow is blown to the buffer liquid storage tank 11; when the temperature of the buffer liquid stored in the buffer liquid storage tank 11 is too low, the cooling air flow is blown to the buffer liquid storage tank 11. The liquid storage tank 11 or the buffer liquid stored in the buffer liquid storage tank 11 is heated.

It can be understood that the cooling air flow blown to the buffer storage tank 11 can come directly from the cold storage compartment of the refrigerator, or can also directly come from other storage compartments, air supply ducts or evaporator compartments of the refrigerator.

It can also be understood that the embodiment shown in Figure 2 is only one embodiment of the present invention. In essence, in order to achieve the purpose of the present invention, there is no strict sequence limit on the above steps S10 and S30, that is, they can be executed first. Step S10 and then step S30 may be executed, or step S30 may be executed first and then step S10.

In order to solve the problem of severely limited heating of the detection pool, the present invention does not continue to seek unnecessary breakthroughs in the direction of directly heating the detection pool, but takes a new approach to control the temperature of the buffer used to form the sample solution in advance. That is, when the temperature of the buffer liquid stored in the buffer liquid storage tank 11 is too high, the cooling air flow is blown into the buffer liquid storage tank 11 to reduce the temperature of the buffer liquid. When the temperature of the buffer liquid stored in the buffer liquid storage tank 11 is too low, The temperature of the buffer solution is increased by heating the buffer solution storage tank 11 or heating the buffer solution stored in the buffer solution storage tank 11 . Therefore, during detection, regardless of the external environment, the temperature of the sample liquid formed after mixing the buffer solution and the sample that is pre-controlled within an appropriate range is more suitable. The sample liquid with a suitable temperature can directly react fully with the detection reagent. Or it can fully react with the detection reagent after slight temperature adjustment, effectively improving the detection speed and accuracy of the detection results.

In some embodiments, the first indication signal and the second indication signal are generated as follows:

Obtain the temperature of the buffer solution stored in the buffer storage tank 11;

The first indication signal is generated when the temperature of the buffer stored in the buffer storage tank 11 is higher than the maximum endpoint value of the first preset temperature range;

The second indication signal is generated when the temperature of the buffer liquid stored in the buffer liquid storage tank 11 is lower than the minimum endpoint value of the first preset temperature range.

That is to say, the temperature of the buffer can be directly obtained, and based on the obtained temperature value, it can be determined whether the temperature of the buffer is too high or too low. When the obtained temperature value is higher than the maximum endpoint value of the first preset temperature range, it means that the temperature of the buffer solution is too high; when the obtained temperature value is lower than the minimum endpoint value of the first preset temperature range, it means that the buffer solution is too high. The liquid temperature is too low.

Specifically, FIG. 3 is a schematic structural diagram of a control method for a refrigerator according to another embodiment of the present invention. In some embodiments, the control method of the present invention includes:

Step S11, obtain the temperature of the buffer stored in the buffer storage tank 11;

Step S12, determine whether the temperature of the buffer is higher than the maximum endpoint value of the first preset temperature range; if so, go to step S20; if not, go to step S31;

Step S31, determine whether the temperature of the buffer is lower than the minimum endpoint value of the first preset temperature range; if so, go to step S40; if not, go back to step S11; and

That is to say, when the temperature of the buffer liquid is within the first preset temperature range, the cooling air flow is neither blown to the buffer liquid storage tank 11 nor the buffer liquid storage tank 11 or the buffer liquid stored in the buffer liquid storage tank 11 . Apply heat.

In some embodiments, after step S20 or step S40, the control method of the present invention further includes:

When the temperature of the buffer liquid stored in the buffer liquid storage tank 11 is within the first preset temperature range, stop blowing the cooling air flow to the buffer liquid storage tank 11 or stop cooling the buffer liquid storage tank 11 or storing the buffer liquid in the buffer liquid storage tank 11 The buffer solution is heated.

That is to say, if after blowing the cooling air flow to the buffer storage tank 11 and the temperature of the buffer stored in the buffer storage tank 11 is adjusted to within the first preset temperature range, the cooling air flow will no longer be continued to the buffer storage tank 11 Cooling airflow. If the buffer storage tank 11 or the buffer stored in the buffer storage tank 11 is heated and the temperature of the buffer stored in the buffer storage tank 11 is adjusted to within the first preset temperature range, heating will no longer be continued. . Thus, the temperature of the buffer liquid stored in the buffer liquid storage tank 11 can be dynamically maintained within the first preset temperature range so that it can be used for detection at any time.

Figure 4 is a partial structural diagram of a refrigerator according to an embodiment of the present invention. In some embodiments, the refrigerator has a blowing port 21 for flowing cooling air to the buffer storage tank 11 , a damper 22 for selectively opening or closing the blowing port 21 , and a heating device for heating the buffer storage tank 11 Device 30. Among them, the blowing port 21 and the damper 22 form an air blowing mechanism 20 for selectively blowing the cooling air flow to the buffer storage tank 11 .

In these embodiments, the step of blowing the cooling air flow to the buffer storage tank 11 may specifically include: controlling the damper 22 to open the blowing port 21 .

The step of stopping the cooling air flow to the buffer storage tank 11 may specifically include: controlling the damper 22 to close the blowing port 21 .

The step of heating the buffer storage tank 11 or the buffer stored in the buffer storage tank 11 can be specifically It includes: starting the heating device 30 to heat the buffer storage tank 11 and transferring the heat to the buffer in the buffer storage tank 11 through the buffer storage tank 11 .

The step of stopping heating the buffer storage tank 11 or the buffer stored in the buffer storage tank 11 may specifically include: stopping the heating device 30 .

The inventor realized that in the embodiment shown in FIG. 3 , although the temperature of the buffer solution can be directly measured by a temperature sensor, this requires an additional temperature sensor to be installed in the buffer storage tank, which increases the cost. The inventor further realized that in order to facilitate operation, the microfluidic detection system 10 is usually installed on the door of the refrigerator, and the buffer storage tank 11 is exposed to the environmental space. Therefore, the temperature of the buffer stored in the buffer storage tank 11 is different from that of the refrigerator. The ambient temperature of the ambient space is roughly the same, and the ambient temperature of the ambient space can be used to characterize the temperature of the buffer solution.

To this end, in some embodiments, the first indication signal and the second indication signal may be generated in the following manner:

When the ambient temperature is higher than the maximum endpoint value of the second preset temperature range, a first indication signal is generated;

That is to say, in the preferred embodiment, the present invention directly measures the ambient temperature of the environmental space where the refrigerator is located through the ambient temperature sensor commonly found in refrigerators, thereby indirectly determining the temperature of the buffer solution based on the ambient temperature, which not only can obtain a relatively Accurate judgment results, and also saves the number of temperature sensors, simplifying the structure of the refrigerator and reducing its cost.

Specifically, FIG. 5 is a schematic structural diagram of a control method for a refrigerator according to yet another embodiment of the present invention. In some embodiments, the control method of the present invention includes:

Step S11′, obtain the ambient temperature of the external environment where the refrigerator is located;

Step S12′, determine whether the ambient temperature is higher than the maximum endpoint value of the second preset temperature range; if so, go to step S20; if not, go to step S31;

Step S31', determine whether the ambient temperature is lower than the minimum endpoint value of the second preset temperature range; if so, go to step S40; if not, return to step S11'; and

In some embodiments, when the ambient temperature is within the second preset temperature range, the damper 22 is controlled to be continuously in a closed state and the heating device 30 is controlled to be in a stopped state.

That is to say, when the ambient temperature is within the second preset temperature range, neither the cooling air flow is blown to the buffer storage tank 11 nor the buffer storage tank 11 or the buffer stored in the buffer storage tank 11 is heated. .

In some embodiments, the refrigerator has a blowing port 21 for flowing cooling air to the buffer storage tank 11 and a damper 22 that selectively opens or closes the blowing port 21 . In these embodiments, referring to the schematic structural diagram of a control method of a refrigerator according to another embodiment of the present invention shown in FIG. 6 , the step of blowing the cooling air flow after heat exchange by the evaporator of the refrigerator to the buffer storage tank 11 Specifics may include:

Step S21, determine the target switching ratio of the damper 22 within a preset time period according to the ambient temperature; and

Step S22: adjust the opening and closing state of the damper 22 according to the target opening and closing ratio.

It can be understood that the target switching ratio of the damper 22 can be expressed as a percentage. For example, when the target on/off ratio is 40%, it means that within the preset time period, the damper 22 opens the air outlet 21 for 40% of the time and closes the air outlet 21 for 60% of the time.

The present invention selects different opening and closing ratios of the damper 22 according to different ambient temperatures, which can not only ensure that the damper 22 has sufficient opening time to effectively reduce the temperature of the buffer liquid stored in the buffer storage tank 11, but also avoid the need for dampers. 22 is opened for too long, causing the temperature of the buffer stored in the buffer storage tank 11 to drop several degrees.

Specifically, a correspondence table about the ambient temperature and the switching ratio of the damper 22 can be pre-stored in the refrigerator, and it only needs to be matched to the corresponding target switching ratio according to the obtained ambient temperature.

It can be understood that the ambient temperature and the on-off ratio of the damper 22 can be roughly proportional to each other, that is, the higher the ambient temperature, the greater the on-off ratio of the damper 22 .

In some embodiments, the refrigerator further includes a heating device 30 for heating the buffer storage tank 11 . In these embodiments, referring to the schematic structural diagram of a control method of a refrigerator according to yet another embodiment of the present invention shown in FIG. 7 , the buffer storage tank 11 or the buffer stored in the buffer storage tank 11 is performed. The heating steps may specifically include:

Step S41, determine the target on-stop ratio of the heating device 30 within a preset time period according to the ambient temperature;

Step S42: Control starting and stopping of the heating device 30 according to the target starting and stopping ratio.

The present invention selects different start-stop ratios of the heating device 30 according to different ambient temperatures, which can not only ensure that the heating device 30 has sufficient startup time to effectively increase the temperature of the buffer liquid stored in the buffer storage tank 11, but also avoid the need for heating. 30 The long start-up time causes the temperature of the buffer stored in the buffer storage tank 11 to rise many degrees.

It can be understood that the target on/off ratio of the heating device 30 can be expressed as a percentage. For example, when the target on/off ratio is 60%, it means that within the preset time period, the heating device 30 starts heating for 60% of the time and the heating device 30 stops heating for 40% of the time.

Specifically, a correspondence table about the ambient temperature and the heating device's on-stop ratio can be pre-stored in the refrigerator, and it only needs to be matched to the corresponding target on-off ratio based on the acquired ambient temperature.

It can be understood that the ambient temperature and the on-stop ratio of the heating device 30 can be roughly inversely proportional, that is, the lower the ambient temperature, the greater the on-off ratio of the heating device 30 .

It can also be understood that in some embodiments, steps S21, S22, S41 and S42 may be included simultaneously, that is, the damper 22 and the heating device 30 operate according to the target on/off ratio and the target on/off ratio respectively.

The present invention also provides a refrigerator. Figure 8 is a schematic structural diagram of the refrigerator according to one embodiment of the present invention. Figure 9 is a schematic structural block diagram of the refrigerator according to one embodiment of the present invention. The refrigerator 1 of the present invention includes a microfluidic detection system 10, an air supply mechanism 20 and a heating device 30. The microfluidic detection system 10 is used to conduct qualitative and/or quantitative detection of preset detection parameters of a sample. The microfluidic detection system 10 includes a buffer storage tank 11 for storing a detection buffer. The air blowing mechanism 20 is used to blow the cooling air flow that has been heat-exchanged by the evaporator of the refrigerator 1 to the buffer storage tank 11 . The heating device 30 is used to heat the buffer liquid storage tank 11 or the buffer liquid stored in the buffer liquid storage tank 11 .

In particular, the refrigerator 1 also includes a control device 40. The control device 40 includes a processor 41 and a memory 42. The memory 42 stores a machine executable program 43, and when executed by the processor 41, the machine executable program 43 is used to implement any of the above. The control method described in an embodiment.

Specifically, the processor 41 may be a central processing unit (central processing unit, CPU for short), or a digital processing unit, or the like. The processor 41 sends and receives data through the communication interface. The memory 42 is used to store programs executed by the processor 41 . The memory 42 is any medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, and can also be a combination of multiple memories. The above-mentioned machine executable program 43 can be downloaded from a computer-readable storage medium to a corresponding computing/processing device or to a computer or external storage device via a network (such as the Internet, a local area network, a wide area network and/or a wireless network).

Further, the refrigerator 1 further includes a box body 50 and a door body 60 , and the microfluidic detection system 10 can be disposed on the door body 60 .

In some embodiments, the air supply mechanism 20 may specifically include an air blowing port 21 for allowing the cooling air flow to flow to the buffer storage tank 11 , and a damper 22 that selectively opens or closes the blowing port 21 .

Specifically, the air outlet 21 can be directly connected to the cold storage compartment of the refrigerator 1 , or can be directly connected to other storage compartments, air supply ducts or evaporator rooms of the refrigerator 1 .

Preferably, the microfluidic detection system 10 is disposed on the refrigeration door of the refrigerator 1 corresponding to the refrigeration compartment. Correspondingly, the air blowing port 21 can communicate with the refrigeration compartment. Further, the air blowing port 21 may have two open ports facing the cold storage compartment of the refrigerator and the buffer storage tank 11 respectively, and the number of air doors 22 is two. The two air doors 22 are respectively provided at the two open ports of the air blowing port 21. , to synchronously open or synchronously close the two open ports of the blowing port 21. Therefore, when the damper 22 is in a closed state, it can not only prevent the cooling air flow from flowing into the blowing port 21, but also isolate the inside of the blowing port 21 from the external environment, thereby avoiding condensation inside the blowing port 21.

In some embodiments, the heating device 30 may be disposed on the rear side of the buffer storage tank 11 to directly heat the buffer storage tank 11 , thereby indirectly heating the buffer in the buffer storage tank 11 .

Those skilled in the art should also understand that terms such as "upper", "lower", "front", "back", "top", and "bottom" used to express orientation or positional relationships in the embodiments of the present invention are Based on the actual use state of the refrigerator 1, these terms are only used to facilitate the description and understanding of the technical solution of the present invention, but do not indicate or imply that the device or device referred to must have a specific orientation or be constructed in a specific orientation. and operation, and therefore cannot be construed as limitations of the present invention.

By now, those skilled in the art will appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, the disclosed embodiments may still be practiced in accordance with the present invention without departing from the spirit and scope of the present invention. The content directly identifies or leads to many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A control method for a refrigerator, which has a microfluidic detection system for qualitatively and/or quantitatively detecting preset detection parameters of a sample, and the microfluidic detection system includes a buffer for storing a detection buffer. Buffer storage tank, the control method includes:

When the first indication signal is obtained, the cooling air flow after heat exchange by the evaporator of the refrigerator is blown to the buffer storage tank, and the first indication signal is used to indicate the buffer stored in the buffer storage tank. The temperature of the liquid is too high; and

When a second indication signal is obtained, the buffer storage tank or the buffer stored in the buffer storage tank is heated. The second indication signal is used to indicate that the buffer storage tank is stored in the buffer storage tank. The buffer temperature is too low.
The control method according to claim 1, wherein the first indication signal and the second indication signal are generated in the following manner:

Obtain the temperature of the buffer stored in the buffer storage tank;

The first indication signal is generated when the temperature of the buffer stored in the buffer storage tank is higher than the maximum endpoint value of the first preset temperature range;

The second indication signal is generated when the temperature of the buffer solution stored in the buffer solution storage tank is lower than the minimum endpoint value of the first preset temperature range.
The control method according to claim 2, wherein,

When the temperature of the buffer liquid stored in the buffer liquid storage tank is within the first preset temperature range, stop blowing cooling air flow to the buffer liquid storage tank or stop cooling the buffer liquid storage tank or the buffer liquid storage tank. The buffer stored in the buffer storage tank is heated.
The control method according to claim 3, wherein the refrigerator has a blowing port for supplying cooling air flow to the buffer storage tank, a damper for selectively opening or closing the blowing port, and a blower for a heating device for heating the buffer storage tank; wherein

The step of blowing cooling airflow to the buffer storage tank includes: controlling the damper to open the blowing port;

The step of stopping blowing the cooling air flow to the buffer storage tank includes: controlling the damper to close the blowing port;

The step of heating the buffer storage tank or the buffer stored in the buffer storage tank includes: starting the heating device to heat the buffer storage tank, and heating the buffer storage tank through the buffer storage tank. Transferring heat to the buffer in the buffer storage tank;

The step of stopping heating the buffer storage tank or the buffer stored in the buffer storage tank includes: stopping the heating device.
The control method according to claim 1, wherein the first indication signal and the second indication signal are generated in the following manner:

Obtain the ambient temperature of the external environment where the refrigerator is located;

When the ambient temperature is higher than the maximum endpoint value of the second preset temperature range, the first indication signal is generated;

The second indication signal is generated when the ambient temperature is lower than the minimum endpoint value of the second preset temperature range. Number.
The control method according to claim 5, wherein the refrigerator has a blowing port for supplying cooling air flow to the buffer storage tank, and a damper that selectively opens or closes the blowing port;

The step of blowing the cooling air flow that has been heat-exchanged by the evaporator of the refrigerator to the buffer storage tank includes:

Determine the target switching ratio of the damper within a preset time period according to the ambient temperature; and

The opening and closing state of the damper is adjusted according to the target switching ratio.
The control method according to claim 6, wherein the refrigerator further includes a heating device for heating the buffer storage tank; and

The step of heating the buffer storage tank or the buffer stored in the buffer storage tank includes:

Determine the target on-stop ratio of the heating device within a preset time period according to the ambient temperature;

Control the starting and stopping of the heating device according to the target on-stop ratio.
The control method according to claim 7, wherein,

When the ambient temperature is within the second preset temperature range, the damper is controlled to be continuously closed and the heating device is controlled to be continuously stopped.
A refrigerator including:

A microfluidic detection system, used for qualitative and/or quantitative detection of preset detection parameters of samples, the microfluidic detection system includes a buffer storage tank for storing a buffer for detection;

An air supply mechanism for blowing the cooling air flow after heat exchange by the evaporator of the refrigerator to the buffer storage tank;

A heating device for heating the buffer storage tank or the buffer stored in the buffer storage tank; and

A control device includes a processor and a memory, a machine executable program is stored in the memory, and when the machine executable program is executed by the processor, it is used to implement the control method according to claim 1.
The refrigerator according to claim 9, wherein,

The air supply mechanism includes a blowing port for allowing cooling air to flow to the buffer storage tank, and a damper that selectively opens or closes the blowing port; and

The blowing port has two open ports respectively facing the cold storage compartment of the refrigerator and the buffer storage tank. The number of the air doors is two, and the two air doors are respectively provided at the two open ports. , to synchronously open or synchronously close the two open ports.