CN105806010B - A kind of wind cooling refrigerator and its control method including temperature controllable humidity regions - Google Patents

Abstract

The invention discloses an air-cooled refrigerator with an adjustable temperature and humidity area and a control method thereof. The refrigerated room is provided with an adjustable temperature and humidity area independent of the refrigerated room. The area around the adjustable temperature and humidity area is wrapped with a layer of thermal insulation material, which can A temperature and humidity sensor is installed in the temperature and humidity area, and the temperature and humidity sensor is electrically connected to the main control board. There is a regional air supply duct on the back of the adjustable temperature and humidity area. The regional air supply duct connects the temperature and humidity area and the evaporator compartment The regional air supply duct and the refrigerated air supply duct are independent, and the regional air supply duct is provided with a regional air supply damper. Advantages of the present invention: by setting an independent adjustable temperature and humidity area in the refrigerating room, the temperature and humidity of the adjustable temperature and humidity area are controlled through an independent air duct connected to the evaporator warehouse, so that the temperature and humidity in the adjustable temperature and humidity area can be realized Adjustable temperature and humidity provide an ideal storage area for items that require both a low temperature and low humidity storage environment.

Description

An air-cooled refrigerator including an adjustable temperature and humidity area and its control method

technical field

The invention relates to the technical field of refrigeration appliances, in particular to an air-cooled refrigerator with an adjustable temperature and humidity area and a control method thereof.

Background technique

As refrigerators penetrate into people's daily life, users have more and more functional requirements for refrigerators. For example, people hope that refrigerators are not only used to store fruits, vegetables, meat and other ordinary foods that require high humidity, but also to store some Items such as tea and Chinese medicinal materials that require a low temperature and low humidity environment.

Existing air-cooled refrigerators have relatively high humidity in the refrigerating room. If the items are stored directly in the refrigerating room, it will not only cause the items to quickly absorb moisture in the air, making it difficult to achieve the expected drying and anti-mold effects, but also because the refrigerating temperature is at 0°C Above, if the optimum storage temperature is not reached, the quality of the stored items will be affected. Therefore, a refrigerator with a controllable temperature and humidity area emerges at the historic moment, which not only has a low temperature effect, but also can effectively keep stored items dry. However, there is currently a drying room in the cold room on the market, but the actual effect is not satisfactory, and the temperature of the drying room cannot reach a lower temperature, the structure is complicated, and the cost is high. In view of the above problems, it is necessary to design a refrigerator with a controllable temperature and humidity area with a simple structure and low cost.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide an air-cooled refrigerator with an adjustable temperature and humidity area and its control method, in order to provide a suitable storage area for items that require both low temperature and low humidity storage environment.

The present invention is achieved through the following technical solutions:

An air-cooled refrigerator including an adjustable temperature and humidity area, including a box body, a main control board is arranged outside the box body, a refrigerator room and a freezer room arranged up and down are arranged inside the box body, and the back side of the freezer room is arranged There is an evaporator compartment, the evaporator compartment is provided with an evaporator, an evaporator sensor is provided on the evaporator, a cooling fan is provided above the evaporator, and a refrigerating air supply duct is provided on the back of the refrigerator compartment. The refrigerated air duct connects the refrigerated room with the evaporator compartment, and the refrigerated room is provided with an adjustable temperature and humidity area independent of the refrigerated room, and the adjustable temperature and humidity area is wrapped around There is an insulating material layer, a temperature and humidity sensor is arranged in the adjustable temperature and humidity area, and the temperature and humidity sensor is electrically connected to the main control board, and a regional air supply duct is arranged on the back of the adjustable temperature and humidity area. The regional air supply duct connects the adjustable temperature and humidity area with the evaporator warehouse, the regional air supply duct is independent from the refrigerated air supply duct, and the regional air supply duct is set There are zone supply air dampers.

As a preferred embodiment of the above-mentioned air-cooled refrigerator including an adjustable temperature and humidity area, the adjustable temperature and humidity area is provided with a regional air supply port and a regional air return port, and the regional air supply port is connected to the regional air supply duct and an adjustable temperature and humidity area, the air return port in the area communicates with the bottom of the evaporator chamber through the air return duct in the area.

As a preferred embodiment of the above-mentioned air-cooled refrigerator with an adjustable temperature and humidity area, the inner wall of the refrigerating room is provided with a refrigerating air supply port and a refrigerating air return port, and the refrigerating air supply port communicates with the refrigerating air supply duct and the refrigerating air supply duct. The refrigerating room, the refrigerating return air outlet communicates with the bottom of the evaporator compartment through the refrigerating return air duct.

As a preferred embodiment of the above-mentioned air-cooled refrigerator including an adjustable temperature and humidity area, a refrigeration door is provided in front of the refrigerator, and a display screen is provided in front of the refrigerator door.

As a preferred embodiment of the above-mentioned air-cooled refrigerator including an adjustable temperature and humidity zone, the zone air supply damper is an electronically controlled damper.

A control method for an air-cooled refrigerator including an adjustable temperature and humidity area, the air-cooled refrigerator is an air-cooled refrigerator including an adjustable temperature and humidity area as described above, and the control method is carried out as follows:

Step 1. First, the user presets the target temperature T and target humidity H. The main control board calculates the temperature start point T _on , temperature stop point T _off , and humidity in the adjustable temperature and humidity area according to the preset target temperature T and target humidity H. The start point H _on and the humidity stop point H _off ;

Step 2. The temperature and humidity sensor collects the current temperature t and current humidity h of the adjustable temperature and humidity area in real time and sends them to the main control board. When the conditions t≥T _on or h≥H _on are met, enter step 3;

Step 3. The real-time temperature T' of the evaporator is collected in real time by the evaporator sensor and sent to the main control board. The main control board calculates the current dew point temperature t' in real time according to the current temperature t and current humidity h of the adjustable temperature and humidity area, and Make a difference between the real-time temperature T' of the evaporator and the current dew point temperature t' and the temperature shutdown point T _off . When the conditions T'-t'≤a and T'-T _off ≤b are met, the cooling fan is controlled to start, The regional air supply damper is opened to start cooling and dehumidifying the adjustable temperature and humidity area, where a and b are set values and a>0 and b>0;

Step 4. Set condition 1 as h≤H _off and condition 2 as t≤T _off . In the process of cooling and dehumidifying the adjustable temperature and humidity area this time, first determine which condition is satisfied first among condition 1 and condition 2. If condition 1 is met first, go to step 5; if condition 2 is met first, go to step 6;

Step 5. Continue to judge the second condition. When the second condition is met, close the regional air supply damper, and end the cooling and dehumidification of the adjustable temperature and humidity region;

Step 6. Continue to judge condition 1. When condition 1 is satisfied, close the air supply damper in the area, and end the cooling and dehumidification in the adjustable temperature and humidity area.

As a preferred implementation of the above-mentioned control method for an air-cooled refrigerator including an adjustable temperature and humidity region, in step 3, 1≤a≤20, 1≤b≤20.

As a preferred embodiment of the above-mentioned control method of an air-cooled refrigerator including an adjustable temperature and humidity area, in the step 1, the value range of the target temperature T is: -6°C≤T≤8°C, the target humidity H The value range is: 10%RH≤H≤60%RH.

Compared with the prior art, the present invention has the following advantages:

1. In the air-cooled refrigerator provided by the present invention, an adjustable temperature and humidity area independent of the refrigerator room is set in the refrigerator room, and the temperature and humidity of the adjustable temperature and humidity area are controlled through an independent air duct connected to the evaporator compartment , to realize the adjustable temperature and humidity in the adjustable temperature and humidity area, which can quickly cool down and dehumidify the area, and the humidity fluctuation is small, and has been maintained at a stable value; thus providing for items that require both low temperature and low humidity storage environment An area suitable for storage meets the needs of consumers; and the air-cooled refrigerator has a simple structure and low cost.

2. In the control method of the air-cooled refrigerator provided by the present invention, the user sends a request by preset target temperature T and target humidity H, and judges the difference between the real-time temperature T' of the evaporator and the current dew point temperature t' of the area through the main control board The value is used to determine whether to perform cooling and dehumidification, so as to control the action of the independent regional air supply damper to achieve the purpose of cooling and dehumidifying the adjustable temperature and humidity area, and the control method is more flexible. This control method can cool down and dehumidify the adjustable temperature and humidity area even when the compressor is stopped, the refrigerator is not turned on for a long time, and the refrigerator is set to be closed.

Description of drawings

Fig. 1 is a side view structural schematic diagram of the air-cooled refrigerator of the present invention.

Fig. 2 is a front structural schematic view of the air-cooled refrigerator of the present invention.

Fig. 3 is a flowchart of the control method of the present invention.

Labels in the figure: 1 refrigerator, 2 freezer, 3 evaporator, 4 refrigeration fan, 5 adjustable temperature and humidity area, 6 area air supply duct, 7 area air supply damper, 8 area air supply outlet, 9 area return air outlet, 10 refrigerated air supply duct, 11 refrigerated air supply door, 12 refrigerated air supply outlet, 13 refrigerated return air outlet, 14 temperature and humidity sensor, 15 insulation material layer, 16 display screen, 17 main control board, 18 evaporator sensor.

Detailed ways

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

Referring to Fig. 1 and Fig. 2, this embodiment discloses an air-cooled refrigerator with an adjustable temperature and humidity area, including a box body, a main control board 17 is arranged outside the box body, and a refrigerator room 1 arranged up and down is arranged inside the box body and the freezer compartment 2, the front side of the freezer compartment 1 is provided with a refrigerated door body, and the front side of the refrigerated door body is provided with a display screen 16.

An evaporator 3 compartment is arranged on the back of the freezer compartment 2, an evaporator 3 is arranged in the evaporator 3 compartment, an evaporator sensor 18 is arranged on the evaporator 3, a cooling fan 4 is arranged above the evaporator 3, and a refrigeration fan 4 is arranged on the back of the refrigerator compartment 1. The air supply duct 10 for refrigeration connects the refrigerating chamber 1 with the 3 warehouses of the evaporator. An independent adjustable temperature and humidity area 5, surrounded by an insulating material layer 15, and a temperature and humidity sensor 14 is arranged in the adjustable temperature and humidity area 5, and the temperature and humidity sensor 14 is electrically connected to the main control board 17, which can A regional air supply duct 6 is arranged on the back of the temperature-adjusting humidity area 5, and the regional air supply duct 6 connects the temperature-adjustable humidity area 5 with the evaporator 3 warehouse, and the regional air supply duct 6 is connected to the refrigerated air supply duct 10. Independent, and the regional air supply air duct 6 is provided with a regional air supply damper 7, and the regional air supply damper 7 is an electronically controlled damper.

Among them, the adjustable temperature and humidity area 5 is provided with a regional air supply port 8 and a regional air return port 9, the regional air supply port 8 is connected to the regional air supply duct 6 and the adjustable temperature and humidity area 5, and the regional air return port 9 communicates with the regional air return duct through the regional air return duct. The bottoms of the 3 warehouses of the evaporator are connected. The inner wall of the refrigerating room 1 is provided with a refrigerating air supply port 12 and a refrigerating return air port 13. The refrigerating air supply port 12 is connected to the refrigerating air supply duct 10 and the refrigerating room 1. The refrigerating return air duct 13 is connected to the bottom of the evaporator 3 through the refrigerating return air duct. . Because the regional air return port 9 of the adjustable temperature and humidity area 5 and the refrigerated air return port 13 during refrigeration are separated by the insulation material layer 15 and have a certain relative distance, it is ensured that the high humidity return air in the refrigerator room 1 will not cause damage to the adjustable temperature and humidity area 5. obvious impact.

The air-cooled refrigerator is provided with an independent adjustable temperature and humidity area 5 in the refrigerating room 1, and a temperature and humidity sensor 14 is arranged in the adjustable temperature and humidity area 5 to collect the temperature and humidity in the adjustable temperature and humidity area 5 in real time. Relative humidity. When the adjustable temperature and humidity area 5 has a cooling and dehumidification request, the temperature and humidity data collected by the temperature and humidity sensor 14 are calculated in real time as the dew point temperature, and the dew point temperature is compared with the temperature of the evaporator 3 collected by the evaporator sensor 18, and the dew point temperature is compared with the temperature of the evaporator 3 collected by the evaporator sensor 18. control method, the cooling and dehumidification action can be performed on the adjustable temperature and humidity area 5 . The cooling and dehumidification action is specifically to open the evaporator 3 and open the area air supply damper 7 .

Referring to Fig. 3, this embodiment also discloses a control method of the above-mentioned air-cooled refrigerator including an adjustable temperature and humidity area, and the control method is carried out according to the following steps:

Step 1. First, the user presets the target temperature T and target humidity H on the display screen 16 of the refrigerator door, and the main control board 17 calculates the temperature of the adjustable temperature and humidity area 5 according to the preset target temperature T and target humidity H. Point T _on , temperature off point T _off , humidity on point H _on and humidity off point H _off ;

Step 2, start the compressor, collect the current temperature t and current humidity h of the adjustable temperature and humidity area 5 in real time by the temperature and humidity sensor 14 and send them to the main control board 17, when the conditions t≥T _on or h≥H _on are met, Go to step 3;

Step 3: The real-time temperature T' of the evaporator 3 is collected in real time by the evaporator sensor 18 and sent to the main control board 17, and the main control board 17 calculates the current dew point in real time according to the current temperature t and the current humidity h of the adjustable temperature and humidity area 5 temperature t', and make a difference between the real-time temperature T' of the evaporator 3 and the current dew point temperature t' and the temperature shutdown point T _off , when the conditions T'-t'≤a and T'-T _off ≤b are satisfied , control the cooling fan 4 to turn on, the regional air supply damper 7 to open, and start to cool and dehumidify the temperature-humidity-adjustable region 5, wherein a, b are set values and a>0, b>0;

Step 4. Set condition 1 as h≤H _off and condition 2 as t≤T _off . In the process of cooling and dehumidifying the adjustable temperature and humidity area 5, first determine which condition is satisfied first. , if condition 1 is met first, go to step 5; if condition 2 is met first, go to step 6;

Step 5, continue to judge the second condition, when the second condition is satisfied, close the regional air supply damper 7, and end the cooling and dehumidification of the adjustable temperature and humidity area 5;

Step 6. Continue to judge condition 1. When condition 1 is satisfied, close the regional air supply damper 7 and end the cooling and dehumidification of the adjustable temperature and humidity region 5 .

Wherein, in step 3, the value ranges of a and b are: 1≤a≤20, 1≤b≤20. In step 1, the value range of the target temperature T is: -6°C≤T≤8°C, and the value range of the target humidity H is: 10%RH≤H≤60%RH.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention. Inside.

Claims (7)

1. a kind of control method of the wind cooling refrigerator comprising temperature controllable humidity regions, the wind cooling refrigerator includes babinet, the case It is provided with master control borad in vitro, refrigerating chamber and freezing chamber arranged up and down, the freezing chamber back setting are provided in the babinet There is evaporator storehouse, evaporator is provided in the evaporator storehouse, evaporator sensor, the evaporation are provided on the evaporator Refrigeration fan is provided with above device, the refrigerating chamber back is provided with refrigeration supply air duct, and the refrigeration supply air duct will be described Refrigerating chamber is connected with the evaporator storehouse, it is characterised in that：It is provided in the refrigerating chamber mutually independent with the refrigerating chamber Temperature controllable humidity regions are enclosed with adiabator layer around the temperature controllable humidity regions, are set in the temperature controllable humidity regions It is equipped with Temperature Humidity Sensor, the Temperature Humidity Sensor is electrically connected with the master control borad, and temperature controllable humidity regions back is set It is equipped with region supply air duct, the temperature controllable humidity regions are connected by the region supply air duct with the evaporator storehouse, institute It is mutually independent with the refrigeration supply air duct to state region supply air duct, and is provided with air-supply wind in region in the region supply air duct Door；

The control method carries out as follows：

Step 1, first user preset target temperature T and target humidity H, master control borad are wet according to preset target temperature T and target Degree H calculates the temperature starting point T of temperature controllable humidity regions_on, temperature break point T_off, humidity starting point H_onWith humidity break point H_off；

Step 2, the Current Temperatures t and current humidity h that acquire temperature controllable humidity regions in real time by Temperature Humidity Sensor are simultaneously sent to Master control borad, when meeting condition t >=T_onOr h >=H_onWhen, enter step 3；

Step 3, the real time temperature T ' for acquiring evaporator in real time by evaporator sensor are simultaneously sent to master control borad, and master control borad is according to can The Current Temperatures t and current humidity h of temperature adjustment humidity regions are calculated existing dew point temperature t ' in real time, and by the real-time of evaporator Temperature T ' respectively with existing dew point temperature t ' and temperature break point T_offDifference is done, when meeting condition T '-t '≤a and T '-T_off≤b When, control refrigeration fan is opened, region air supply damper is opened, and starts to carry out cool-down dehumidification, wherein a, b to temperature controllable humidity regions For setting value and a ＞ 0, b ＞ 0；

Step 4 sets condition one as h≤H_off, condition two is t≤T_off, at this to temperature controllable humidity regions progress cool-down dehumidification During, which condition first meets in first Rule of judgment one and condition two, if condition one first meets, enters step 5；If Condition two first meets, then enters step 6；

Step 5 continues Rule of judgment two, when condition two meets, closes region air supply damper, terminates temperature controllable humidity regions Cool-down dehumidification；

Step 6 continues Rule of judgment one, when condition one meets, closes region air supply damper, terminates temperature controllable humidity regions Cool-down dehumidification.

2. a kind of control method of the wind cooling refrigerator comprising temperature controllable humidity regions as described in claim 1, it is characterised in that： The temperature controllable humidity regions are provided with region air outlet and region return air inlet, and the region air outlet is connected to the region air-supply Air duct and temperature controllable humidity regions, the region return air inlet are connected by region return airway with evaporator orlop portion.

3. a kind of control method of the wind cooling refrigerator comprising temperature controllable humidity regions as claimed in claim 2, it is characterised in that： The freezer wall is equipped with refrigeration air outlet and refrigeration return air inlet, the refrigeration air outlet be connected to the refrigeration supply air duct with The refrigerating chamber, the refrigeration return air inlet are connected by refrigerating return airway with evaporator orlop portion.

4. a kind of control method of the wind cooling refrigerator comprising temperature controllable humidity regions as described in claim 1, it is characterised in that： It is equipped with refrigeration door body in front of the refrigerating chamber, display screen is equipped on front side of the refrigeration door body.

5. a kind of control method of the wind cooling refrigerator comprising temperature controllable humidity regions as described in claim 1, it is characterised in that： The region air supply damper is electric control damper.

6. a kind of control method of the wind cooling refrigerator comprising temperature controllable humidity regions as described in claim 1, it is characterised in that： In the step 3,1≤a≤20,1≤b≤20.

7. a kind of control method of the wind cooling refrigerator comprising temperature controllable humidity regions as described in claim 1, it is characterised in that： In the step 1, the value range of target temperature T is：- 6 DEG C≤T≤8 DEG C, the value range of target humidity H is：10%RH≤ H≤60%RH.