CN113803932A

CN113803932A - Refrigerator and temperature control method thereof

Info

Publication number: CN113803932A
Application number: CN202010536693.1A
Authority: CN
Inventors: 张月; 张守杰; 张升刚; 杨大海; 韩丽丽
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-12-17

Abstract

The invention provides a refrigerator and a temperature control method thereof. The refrigerator includes a box body, a sealing assembly, a refrigeration system and a cold storage box. Specifically, a freezer compartment and an air duct communicating with the freezer compartment are formed inside the box. A plurality of partitions are spliced with each other and together with the sealing structure to define an independently sealed micro-freezing space inside the freezing chamber. The cold air after cooling by the refrigeration system can enter the freezing chamber and the micro-freezing space respectively through the air duct. The cold storage box is built in the micro-freezing space, and the cold storage box includes a box body with a hollow inside, an outer shell covering the outer side of the box body, and a cold storage agent. The inside of the box is sealed for storage. An interlayer is formed between the box body and the outer shell, and the cold storage agent is uniformly accommodated in the interlayer. Using the cold storage characteristics of the cold storage agent, it can buffer the incoming cold air, keep the temperature of the entire micro-freezing space uniform, and avoid large temperature fluctuations.

Description

Refrigerator and temperature control method thereof

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator and a temperature control method thereof.

Background

At present, with the improvement of living standard, people put higher demands on the functions of more important household refrigerators. Compared with the traditional two-door refrigerator, the three-door and four-door refrigerator which is more intelligent is released in the market, and the refrigerator temperature changing chamber is added. The temperature-variable chamber is used as a multifunctional storage chamber with adjustable temperature, so that refrigeration and freezing can be performed, and the requirements of different food materials on the storage temperature are met.

In the existing cross four-door refrigerator products in the market, the wide temperature-changing chamber at the lower left corner of the refrigerator occupies 1/4 volume of the refrigerator, the volume is generally more than 100L, the period for preserving food in a micro-freezing space/temperature-changing region (-3 ℃) is short, the 100L volume is relatively wasted, and the space is generally used as a freezing chamber after a user purchases the refrigerator home, so that the micro-freezing space of the refrigerator is lost. In addition, some refrigerator products are placed in a slightly frozen space region/temperature changing region (-3 ℃) in a refrigerating chamber, but corresponding heat preservation measures are lacked, so that the temperature is difficult to maintain at a preset value, the fluctuation is large, the water loss is large, and the due fresh-keeping effect is not achieved. Meanwhile, the slightly frozen space is mostly used for storing fish food materials, the fish food materials are placed in the refrigerating chamber and are close to the cooked fruit and vegetable food, the smell of the fish food materials and the smell of the cooked fruit and vegetable food materials can affect each other, and the user experience is reduced.

Disclosure of Invention

The invention aims to provide a refrigerator, which solves the problem that temperature fluctuation is large due to the fact that a slightly-frozen space region/temperature-changing region in a refrigerator product in the prior art is lack of heat preservation measures.

The invention also provides a temperature control method of the refrigerator.

In order to solve the technical problems, the invention adopts the following technical scheme:

a refrigerator, the box, its inside forms the freezing chamber and air duct communicated with said freezing chamber; the sealing assembly comprises a plurality of partition plates and a sealing structure which are arranged in the freezing chamber, the partition plates are mutually spliced and connected with the sealing structure to jointly limit an independent sealed micro-freezing space in the freezing chamber, and the micro-freezing space is also communicated with the air channel; the refrigerating system can make the cold air after refrigeration enter the freezing chamber and the micro-freezing space through the air duct respectively; the cold storage box is arranged in the micro-freezing space and comprises a box body with a hollow inner part, a shell coated on the outer side of the box body and a cold storage agent, the inner part of the box body is sealed and used for storing articles, an interlayer is formed between the box body and the shell, and the cold storage agent is evenly contained in the interlayer.

According to one embodiment of the invention, the refrigerator further comprises a micro-freezing sensor arranged in the box body; the micro-freezing sensor is used for detecting the temperature in the box body and is electrically connected with the refrigerating system; the micro-freezing space is provided with a micro-freezing air inlet and a micro-freezing air return inlet which are respectively communicated with the air duct; the refrigerating system comprises a micro-freezing air door correspondingly arranged at the micro-freezing air inlet, and the micro-freezing air door is electrically connected with and controlled by the micro-freezing sensor and used for opening and closing the micro-freezing air inlet.

According to one embodiment of the invention, the refrigeration system further comprises an evaporator, a fan and a defrost heating pipe; the evaporator, the defrosting heating pipe and the fan are respectively and electrically connected and controlled by the micro-freezing sensor.

According to one embodiment of the present invention, the refrigerator further comprises a freezing sensor provided in the freezing chamber; the freezing sensor is used for detecting the temperature of the freezing chamber and is electrically connected with the refrigerating system; the freezing chamber is provided with a freezing air inlet and a freezing air return inlet which are respectively communicated with the air duct; refrigerating system is including corresponding locating freezing air door that freezing air inlet department, freezing air door electricity is connected and is controlled by freezing sensor is used for opening and closing freezing air inlet.

According to one embodiment of the invention, the box body further comprises a refrigerator inner container, and an air duct cover plate, an air duct back plate and a foam plate which are arranged in the refrigerator inner container; the air duct back plate and the air duct cover plate are oppositely spaced, the foam plate is clamped between the air duct cover plate and the air duct back plate, and a gap is formed between the foam plate and the air duct back plate to form an air duct; a micro-freezing air inlet, a micro-freezing air return inlet and a freezing air inlet are sequentially arranged on the foam plate in a penetrating manner from top to bottom; and a gap is formed between the foam plate and the bottom of the inner container of the freezing box to form a freezing air return opening, and the freezing air return opening is communicated with the micro-freezing air return opening.

According to one embodiment of the present invention, the plurality of partitions includes a vertical partition, a horizontal partition, and a front partition; the vertical partition plate is respectively connected with the top and the bottom of the inner wall of the inner container of the freezing box, the rear end of the vertical partition plate is connected with the air duct cover plate, and the transverse partition plate is horizontally connected between the vertical partition plate and the air duct cover plate; the vertical partition plate, the transverse partition plate, the air duct cover plate and the inner peripheral wall of the inner container of the freezing box are enclosed to form a cavity with a forward opening; the sealing structure is arranged around the opening, and the front partition plate is attached to the sealing structure to seal the opening.

The embodiment also provides a temperature control method of the refrigerator, which comprises the steps of acquiring a first temperature value inside a cold storage box in a freezing chamber through a micro-freezing sensor; when the first temperature value is greater than a set first temperature threshold value, the micro-freezing air door, the evaporator and the fan are all opened; when the first temperature value is smaller than a set second temperature threshold value, the freezing air door is closed, the micro-freezing air door, the defrosting heating pipe and the fan are all opened, and the first temperature threshold value is larger than the second temperature threshold value; when the first temperature value is between the first temperature threshold and the second temperature threshold, the micro-freezing damper is closed.

According to an embodiment of the present invention, when the first temperature value is greater than the set first temperature threshold, the method further includes: when the first temperature value is larger than a set first temperature threshold value, the micro-freezing air door is opened; acquiring a second temperature value inside the freezing chamber through a freezing sensor; when the second temperature value is greater than a set third temperature threshold value, the refrigerating air door, the evaporator and the fan are all opened; and when the second temperature value is smaller than a set fourth temperature threshold value, the freezing air door is closed, the evaporator and the fan are both opened, and the third temperature threshold value is larger than the fourth temperature threshold value.

According to an embodiment of the present invention, when the first temperature value is smaller than the set second temperature threshold, the method further includes: when the first temperature value is smaller than a set second temperature threshold value, the micro-freezing air door is opened; closing the freezing air door; and the defrosting heating pipe and the fan are both started.

According to one embodiment of the invention, when a defrosting command is received by a control system of the refrigerator, a freezing air door is closed; acquiring a first temperature value inside a cold storage box in a freezing chamber through a micro-freezing sensor; when the first temperature value is greater than or equal to a set fifth temperature threshold value, the micro-freezing air door is closed, and the defrosting heating pipe is opened; and when the first temperature value is smaller than the fifth temperature threshold value, the micro-freezing air door, the fan and the defrosting heating pipe are all opened.

According to the technical scheme, the refrigerator provided by the invention at least has the following advantages and positive effects:

1. the micro-freezing space and the freezing chamber are separated and are respectively communicated with the air duct, so that mutual interference of air flows is avoided.

2. A relatively small micro-freezing space is limited in the freezing chamber through the sealing component, the internal space of the refrigerator is fully utilized, and the problem that the temperature-changing space in the existing refrigerator product is overlarge in volume and is partially wasted due to the fact that a user uses the temperature-changing space as the freezing chamber is solved.

3. The cold storage box is arranged in the micro-freezing space and used for storing food materials to be refrigerated. The cold-storage box includes box body, cladding in the shell and the coolant in the box body outside, and the inside seal of box body is used for the storing, can avoid coming from the cold wind direct contact in wind channel to eat the material, reduces the moisture loss. Meanwhile, the cold storage agent is contained in the interlayer between the box body and the shell, and the cold storage property of the cold storage agent is utilized, so that the cold storage agent absorbs and stores cold energy, the buffer effect on the blown cold air is realized, the temperature uniformity of the whole micro-freezing space is kept, the generation of large temperature fluctuation is avoided, and the better fresh-keeping effect is ensured.

Drawings

Fig. 1 is a schematic structural assembly diagram of a refrigerator according to an embodiment of the present invention.

Fig. 2 is an exploded view of the refrigerator according to the embodiment of the present invention.

Fig. 3 is a schematic view of the back of a foam panel assembly in an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an air duct cover plate according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a cold storage box according to an embodiment of the present invention.

Fig. 6 is a flowchart illustrating a temperature control method of a refrigerator according to an embodiment of the present invention.

FIG. 7 is a flowchart of step 130 of FIG. 6 in one embodiment.

FIG. 8 is a flowchart of step 150 of FIG. 6 in one embodiment.

FIG. 9 is a flowchart of step 170 of FIG. 6 in one embodiment.

Fig. 10 is a flowchart illustrating a temperature control method of a refrigerator according to another embodiment of the present invention.

Fig. 11 is a flowchart illustrating temperature control of a refrigerator according to an embodiment of the present invention.

Fig. 12 is a flowchart illustrating temperature control of a refrigerator according to another embodiment of the present invention.

The reference numerals are explained below:

1-box body, 10-freezing box inner container, 101-freezing chamber, 103-air duct, 105-accommodating chamber, 11-air duct cover plate, 13-air duct back plate, 15-foam plate, 16-micro-freezing air door, 17-freezing air door, 18-return air duct structure, 110-micro-freezing air inlet, 130-micro-freezing air return inlet, 150-freezing air inlet and 170-freezing air return inlet;

2-sealing component, 201-micro-freezing space, 21-vertical partition, 23-transverse partition, 25-front partition, 27-sealing structure, 271-front sealing plate and 272-sealing strip;

3-refrigerating system, 31-evaporator, 33-blower;

4-cold storage box, 41-box body, 43-shell and 45-interlayer;

5-drawer structure, 51-drawer body, 53-drawer end plate;

6-a partial freeze sensor;

7-a cryosensor;

80-inner container of the refrigerator.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes may be made therein without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

The embodiment provides a refrigerator, and aims to solve the problem that temperature fluctuation is large due to the fact that a slightly-frozen space/temperature-changing area is lack of heat preservation measures in the related art.

The refrigerator comprises a refrigerator body, a sealing assembly, a refrigerating system and a cold storage box. Specifically, a freezing chamber and an air duct communicated with the freezing chamber are formed inside the cabinet. The sealing assembly comprises a plurality of partition plates and a sealing structure which are arranged in the freezing chamber, the partition plates are mutually spliced and connected with the sealing structure to limit and form an independent sealed micro-freezing space in the freezing chamber, and the micro-freezing space is also communicated with the air duct. The refrigerating system is arranged in the air duct, and cold air refrigerated by the refrigerating system can respectively enter the freezing chamber and the micro-freezing space through the air duct. The cold storage box is arranged in the micro-freezing space and comprises a box body with a hollow inner part, a shell coated on the outer side of the box body and cold storage agent. The box body is internally sealed and used for storing articles. An interlayer is formed between the box body and the shell, and the coolant is uniformly contained in the interlayer.

The micro-freezing space and the freezing chamber are separated and are respectively communicated with the air duct, so that mutual interference is avoided. Meanwhile, cold energy is absorbed and stored by the cold storage agent, the blown cold air is buffered, the temperature of the whole micro-freezing space is kept uniform, and great temperature fluctuation is avoided.

Therefore, the refrigerator utilizes the cold accumulation characteristic of the cold accumulation agent and combines an independent air supply and return mode to create an accurate and constant-temperature micro-freezing space in the freezing chamber of the refrigerator.

Referring to fig. 1, fig. 1 shows a specific structure of a refrigerator provided in this embodiment, which mainly includes a box body 1, and a sealing assembly 2, a refrigeration system 3 and a cold storage box 4 which are disposed in the box body 1.

The box body 1 is a rectangular hollow shell structure, and comprises a refrigerating box inner container 80 and a freezing box inner container 10 which are arranged up and down in the box body. The freezing chamber 101 and the air duct 103 behind the freezing chamber 101 are formed in the inner container 10 of the freezing chamber, and the freezing chamber 101 is communicated with the air duct 103, so that the cold energy generated by the refrigerating system 3 enters the freezing chamber 101, and the refrigeration of the freezing chamber 101 is realized.

Referring to fig. 2, the inner container 10 of the freezer is further provided with an air duct cover plate 11, an air duct back plate 13 and a foam plate 15. The air duct cover plate 11 and the air duct back plate 13 are relatively parallel and spaced; the air duct cover plate 11 is relatively close to the front, and the air duct back plate 13 is arranged at the inner side of the rear wall of the refrigerator liner 10. The foam plate 15 is sandwiched between the air duct cover plate 11 and the air duct back plate 13, and a gap is formed between the foam plate 15 and the air duct back plate 13, and the gap forms an air duct 103.

The sealing assembly 2 is provided in the freezing chamber 101, and mainly includes a plurality of partitions and a sealing structure. The plurality of clapboards are mutually spliced and connected with a sealing structure to define an independent sealed micro-freezing space 201 (the temperature adjusting range is-3 ℃ below zero) in the freezing chamber 101 (the temperature adjusting range is-18 ℃ to-25 ℃) together

3 deg.c) and the micro-freezing space 201 has a micro-freezing air inlet 110 and a micro-freezing air return 130 which are respectively communicated with the air duct 103.

Specifically, the plurality of partitions includes a vertical partition 21, a horizontal partition 23, and a front partition 25. The vertical partition 21 is vertically arranged, is located in the middle of the inner container 10 of the freezer, and is parallel to the left and right side walls of the inner container 10 of the freezer. The vertical partition plate 21 is respectively connected with the top and the bottom of the inner container 10 of the freezing box, and the rear end of the vertical partition plate 21 is connected with the front surface of the air duct cover plate 11. The transverse partition 23 is horizontally arranged and is connected between the vertical partition 21 and the air duct cover plate 11. Thus, the vertical partition plate 21, the horizontal partition plate 23, the air duct cover plate 11 and the inner peripheral wall of the inner container 10 of the freezer can enclose to form a rectangular hollow cavity with a forward opening. The opening is used for placing the cold storage box 4 into the micro-freezing space 201, thereby being isolated from the freezing chamber 101. The sealing structure is arranged around the opening, and the front partition plate 25 is attached to the sealing structure to seal the opening, so that a complete and sealed micro-freezing space 201 is formed by enclosing with the partition plate. Therefore, a relatively small micro-freezing space 201 is defined in the freezing chamber 101 through the sealing assembly 2, the internal space of the refrigerator is fully utilized, and the problem that the temperature-changing space volume in the existing refrigerator product is too large, and a user uses the temperature-changing space volume as the freezing chamber completely to cause partial space waste is solved.

Referring to fig. 3, the cold storage box 4 is disposed in the micro-freezing space 201, and the drawer structure 5 is disposed inside the cold storage box 4 to refrigerate and preserve food materials.

Specifically, the cool storage box 4 mainly includes a box body 41 with a hollow interior, a housing 43 covering the box body 41, and a cool storage agent (not shown). The box 41 is a hollow rectangular structure having an opening for the drawer structure 5 to enter into the box. The interior of the box body 41 is sealed by the drawer structure 5 for storage. An interlayer 45 is formed between the box body 41 and the shell 43, and the coolant is uniformly contained in the interlayer 45. The drawer structure 5 includes a drawer body 51 and a drawer end plate 53 provided at one end of the drawer body 51. The drawer body 51 is slidably accommodated in the box body 41 through the opening, and the outer dimension of the drawer end plate 53 is matched with the shape and the dimension of the opening of the box body 41 so as to seal the opening, thereby forming a sealed space for storing food materials together with the box body 41. The front partition plate 25 is connected with the front surface of the drawer end plate 53 through a buckle so as to facilitate the user to pull out the drawer, and an insulating layer is filled between the front partition plate 25 and the drawer end plate 53.

In this embodiment, the sealing structure includes a front sealing plate 271 and a sealing strip 272. The front sealing plate 271 has a plate-like structure with a rectangular through hole formed therethrough, and the size of the rectangular through hole is equal to the size of the opening of the box body 41. The front sealing plate 271 and the box body 41 of the cold storage box 4 are sealed through the sealing strip 272, and the cold storage at the joint of the front sealing plate and the cold storage box is prevented from leaking through extruding the sealing strip 272, so that the sealing performance of the cold storage box 4 is ensured. The drawer end plate 53 is attached to a rectangular through hole formed in the front sealing plate 271 to seal the case 41.

Utilize the coolant can absorb and store a large amount of cold volumes at low temperature, and can emit a large amount of cold volumes again when the temperature is higher, keep self and around the characteristics of the low temperature environment of within a small range for a long time, absorb and store cold volumes by the coolant, play the cushioning effect to the cold wind that blows in, avoid cold wind direct contact to eat the material, keep whole little temperature that freezes space 201 even, avoid producing great temperature fluctuation, guarantee better fresh-keeping effect.

Moreover, utilize the big characteristics of cold-storage agent phase transition latent heat, the cold-storage agent can also absorb and store the refrigerator in the excessive heat that produces by the heater that changes the frost when changing the frost stage, when the temperature that freezes space 201 a little is low, releases the heat to this neutralization too much cold volume adjusts the temperature that freezes space 201 inside a little, avoids the interior lower temperature of freezer 101 to freeze space 201 a little and causes the influence. Therefore, the above-described coolant may replace a heating structure for adjusting temperature exclusively in the related art. It should be noted that, in the related art, in order to avoid the influence of the lower temperature in the freezing chamber 101 on the micro-freezing space 201, a heating structure such as a heating plate or a heating wire is directly added in the refrigerator to neutralize the excessive cooling energy, but the above heating structure may increase the energy consumption of the whole refrigerator.

Therefore, the cold storage agent is adopted to replace a heating structure, so that the energy consumption is prevented from increasing, and the cost is reduced. In addition, the refrigerator itself generates excessive heat when the evaporator 31 is defrosted. The cold-storage agent can absorb the part of heat, and the problems of temperature rise and influence on food storage are avoided. Compared with the air, the cold storage agent has smaller temperature change on the premise of absorbing the same heat, can buffer the temperature fluctuation and maintain the ideal temperature of the inner space.

Referring to fig. 4 and 5, the refrigeration system 3 mainly includes an evaporator 31, a defrosting heating pipe (not shown), and a fan 33 disposed in the air duct 103. The evaporator 31 is located in a gap between the duct back 13 and the inner side of the rear wall of the freezer compartment liner 10, and the evaporator 31 is provided with a defrosting heating pipe. And the blower 33 and the evaporator 31 are arranged at an interval up and down. The cold air cooled by the evaporator 31 can enter the freezing chamber 101 and the micro-freezing space 201 through the fan 33 and the air duct 103.

The foam plate 15 is provided with a micro-freezing air inlet 110, a micro-freezing air return 130 and a freezing air inlet 150 at intervals in sequence from top to bottom. The air duct cover plate 11 is correspondingly provided with corresponding through holes. And, there is a clearance between the lower ends of the foam plate 15 and the air duct cover plate 11 and the bottom wall of the inner container 10 of the freezer, and the clearance forms a freezer air return opening 170 communicated with the freezer compartment 101. Further, a return air duct structure 18 is formed on the foam board 15, so that the micro-freezing return air inlet 130 and the freezing return air inlet 170 are communicated, and the two return air inlets are merged at the evaporator 31.

A micro-freezing air door 16 for controlling the air flow to circulate or block is correspondingly arranged at the micro-freezing air inlet 110. The micro-freezing damper 16 includes a damper body formed with a vent communicating with the micro-freezing inlet 110 and a switch plate rotatably provided on the damper body. The opening and closing plate can open or close the ventilation opening through rotation, so that a channel between the air duct 103 and the micro-freezing space 201 is opened or closed, and the cold energy entering the micro-freezing space 201 from the air duct 103 is controlled.

A freezing air door 17 for controlling the flow of air or blocking the air flow is correspondingly arranged at the freezing air inlet 150. The freezing damper 17 is disposed on the rear surface of the duct back 13, and has the same structure as the micro-freezing damper 16. By opening and closing the freezing damper 17, the cold energy entering the freezing chamber 101 can be selectively controlled, and the purpose of controlling the temperature of the freezing chamber 101 is achieved.

So, set up an independent little space 201 that freezes in freezer 101 for the same case courage of the great storage space sharing of two difference in temperature and the door body are provided with independent supply-air outlet and return air inlet through corresponding respectively, and the return air inlet of freezer 101 and little space 201 that freezes only joins in evaporimeter 31 department, can avoid the mutual interference of the temperature during air supply and return air.

Referring back to fig. 3, the refrigerator further includes a micro-freezing sensor 6 disposed in the case 41. The micro-freezing sensor 6 is used for detecting the temperature in the box body 41 so as to monitor the temperature environment of the food material to be refrigerated. The micro-freezing sensor 6 is electrically connected with a control system of the refrigerator, so that the opening and closing of the evaporator 31, the defrosting heating pipe, the fan 33, the micro-freezing air door 16 and other parts are controlled, and the purpose of temperature regulation in the micro-freezing space 201 is achieved.

In this embodiment, the temperature value measured by the micro-freezing sensor 6 in the box body 41 is set as a first temperature value, the temperature value measured by the micro-freezing sensor 6 in the box body 41 is greater than a set first temperature threshold value, and the micro-freezing air door 16, the evaporator 31 and the fan 33 are opened. And when the first temperature value is smaller than a set second temperature threshold value, the micro-freezing air door 16, the defrosting heating pipe and the fan 33 are opened, wherein the first temperature threshold value is larger than the second temperature threshold value. The micro-freeze damper 16 is closed when the temperature value is between the first temperature threshold and the second temperature threshold.

Referring to fig. 5, the refrigerator further includes a freezing sensor 7 disposed in the freezing chamber 101, and the freezing sensor 7 is used for detecting the temperature of the freezing chamber 101. The freezing sensor 7 is electrically connected with a control system of the refrigerator, so that the opening and closing of the evaporator 31, the defrosting heating pipe, the fan 33 and the freezing air door 17 are controlled, and the temperature in the freezing chamber 101 is adjusted.

The temperature value in the freezing chamber 101 measured by the freezing sensor 7 is set as the second temperature value. When the temperature value measured by the freezing sensor 7 is greater than the set third temperature threshold value, the freezing air door 17 is opened. When the second temperature value is lower than the set fourth temperature threshold, the freezing damper 17 is closed, and the third temperature threshold is higher than the fourth temperature threshold.

Referring to fig. 6, in an embodiment of the present application, a temperature control method for a refrigerator is further provided, which includes:

and 110, acquiring a first temperature value inside a cold storage box in the freezing chamber through a micro-freezing sensor.

And step 130, the first temperature value is greater than a set first temperature threshold value, and the micro-freezing air door, the evaporator and the fan are all opened.

When the first temperature value is greater than the set first temperature threshold value, the evaporator 31 and the fan 33 are opened, the micro-freezing air door 16 is opened, and cold air blown by the evaporator 31 enters the micro-freezing space 201 through the micro-freezing air inlet 110, is blown out from the micro-freezing air return inlet 130, and directly returns to the evaporator 31 through the air return duct structure 18.

And 150, when the first temperature value is smaller than a set second temperature threshold value, closing the freezing air door, and opening the micro-freezing air door, the defrosting heating pipe and the fan, wherein the first temperature threshold value is larger than the second temperature threshold value.

When the first temperature value is lower than the set second temperature threshold value, the micro-freezing air door 16 is controlled to be opened, the defrosting heating pipe of the evaporator 31 is opened, the fan 33 is opened, hot air enters the micro-freezing space 201 from the micro-freezing air inlet 110 while defrosting, is blown out from the micro-freezing air return inlet 130, and directly returns to the evaporator 31 through the air return duct structure 18.

And 170, when the first temperature value is between the first temperature threshold and the second temperature threshold, closing the micro-freezing air door.

When the first temperature value is between the first temperature threshold and the second temperature threshold (including the first temperature value being equal to the first temperature threshold or the second temperature threshold), it indicates that the temperature in the partially frozen space 201 meets the set temperature requirement.

Referring to fig. 7, in some embodiments of the present application, step 130 further includes:

and step 1301, if the first temperature value is larger than a set first temperature threshold value, the micro-freezing air door is opened.

The micro-freezing air door 16 is opened, cold air blown by the evaporator 31 enters the micro-freezing space 201 through the micro-freezing air inlet 110 and is blown out from the micro-freezing air return inlet 130, and refrigeration of the micro-freezing space 201 is achieved.

And step 1303, acquiring a second temperature value inside the freezing chamber through the freezing sensor.

And step 1305, the second temperature value is greater than a set third temperature threshold value, and the refrigerating air door, the evaporator and the fan are all opened.

The second temperature value is greater than the set third temperature threshold, the freezing damper 17 at the freezing air inlet 150 is opened, and simultaneously, the evaporator 31 and the fan 33 are opened. The cold air blown from the evaporator 31 enters the freezing chamber 101 through the freezing air inlet 150, and meanwhile, the freezing chamber 101 is cooled.

Step 1307, the second temperature value is less than a set fourth temperature threshold, the freezing damper is closed, and both the evaporator and the fan are opened, and the third temperature threshold is greater than the fourth temperature threshold.

When the second temperature value is less than the set fourth temperature threshold value, and the third temperature threshold value is greater than the fourth temperature threshold value, it indicates that the temperature in the freezer compartment 101 has met the set temperature requirement. The freezing damper 17 is closed and only the evaporator 31 and the fan 33 are opened, thereby refrigerating only the micro freezing space 201.

Referring to fig. 8, in some embodiments of the present application, step 150 further includes:

step 1501, the first temperature value is smaller than a set second temperature threshold value, and the micro-freezing air door is opened.

When the first temperature value is lower than the set second temperature threshold value, the micro-freezing air door 16 is controlled to be opened, so that subsequent hot air can enter the micro-freezing space 201.

At step 1503, the freeze damper is closed.

The freezing damper 17 is closed to prevent subsequent hot air from entering the freezing chamber 101.

In step 1505, both the defrost heater and the blower are turned on.

The defrosting heating pipe is opened, and fan 33 is opened, and with hot-blast entering little space 201 that freezes by little freezing air intake 110 when changing the frost, by hot-blast heating coolant, the temperature of the enclosure space in the cold-storage box 4 is improved to the rethread coolant, avoids the temperature to hang down excessively.

Referring to fig. 9, in some embodiments of the present application, step 170 further includes:

in step 1701, when the first temperature value is between the first temperature threshold and the second temperature threshold, the micro-freezing air door is closed.

When the first temperature value is between the first temperature threshold and the second temperature threshold (including the first temperature value being equal to the first temperature threshold or the second temperature threshold), it indicates that the temperature in the micro-freezing space 201 meets the set temperature requirement, and the micro-freezing air door 16 needs to be closed to avoid the interference of the air flow.

And 1703, acquiring a second temperature value inside the freezing chamber through the freezing sensor.

And step 1705, the second temperature value is greater than a set third temperature threshold value, and the freezing air door, the evaporator and the fan are all opened.

When the second temperature value is greater than the set third temperature threshold value, the freezing damper 17 is opened, and simultaneously, the evaporator 31 and the fan 33 are opened. The cold air blown from the evaporator 31 enters the freezing chamber 101 through the freezing air inlet 150, and meanwhile, the freezing chamber 101 is cooled.

Step 1707, the second temperature value is smaller than a set fourth temperature threshold, the freezing damper is closed, and the third temperature threshold is larger than the fourth temperature threshold.

When the second temperature value is smaller than the set fourth temperature threshold value, and the third temperature threshold value is greater than the fourth temperature threshold value, it indicates that the temperature in the freezing chamber 101 has met the set temperature requirement, and the freezing damper 17 is closed.

Referring to fig. 10, in another embodiment, the method for controlling the temperature of the refrigerator further includes:

step 210, when the control system of the refrigerator receives a defrosting command, the freezing air door is closed.

During the defrosting phase of the refrigerator (the defrosting demand is detected), the freezing damper 17 is closed to prevent the subsequent hot air from entering the freezing chamber 101.

And step 230, acquiring a first temperature value inside the cold storage box in the freezing chamber through the micro-freezing sensor.

And 250, if the first temperature value is greater than or equal to a set fifth temperature threshold value, closing the micro-freezing air door, and opening the defrosting heating pipe.

When the temperature detected by the micro-freezing sensor 6 is greater than or equal to the set fifth temperature threshold, it is indicated that the temperature in the micro-freezing space 201 is within the set temperature range, the micro-freezing air door 16 is closed, the fan 33 is not opened, the defrosting heat is prevented from influencing the temperature stability of the micro-freezing space 201, only the defrosting heating pipe is opened, and at the moment, only the defrosting process is performed.

And 270, enabling the first temperature value to be smaller than the fifth temperature threshold value, and enabling the micro-freezing air door, the fan and the defrosting heating pipe to be opened.

When the micro-freezing sensor 6 detects that the first temperature value is smaller than the fifth temperature threshold value, the micro-freezing air door 16 is opened, the defrosting heating pipe is opened, the fan 33 is opened, and hot air is blown into the micro-freezing space 201 from the micro-freezing air inlet 110 and is blown out from the micro-freezing air return opening 130 while defrosting, and directly returns to the evaporator 31 through the micro-freezing air return opening 130. The coolant is heated by hot air, and the temperature of the enclosed space in the coolant storage box 4 is raised by the coolant.

Please refer to fig. 11, which is a flowchart illustrating a temperature control method according to an embodiment of the present application. After the refrigerator is started, the opening and closing of the evaporator 31, the fan 33 and other components are controlled according to different temperature values collected by the micro-freezing sensor 6 and the freezing sensor 7, and the temperature regulation of the two spaces of the freezing chamber 101 and the micro-freezing space 201 is realized.

In the flowchart on the left side of fig. 11, when the frost sensor 6 detects that the first temperature value is greater than the set first temperature threshold T1 (hereinafter referred to as T1) in the normal operation stage of the refrigerator (no defrosting demand is detected), the frost valve 16 is opened first. When the freezing sensor 7 detects that the second temperature value is greater than a set third temperature threshold T3 (hereinafter referred to as T3), the freezing damper 17 at the freezing air inlet 150 is opened, and at the same time, the evaporator 31 and the fan 33 are opened. The cold air blown from the evaporator 31 enters the micro-freezing space 201 through the micro-freezing air inlet 110, is blown out from the micro-freezing air return inlet 130, and directly returns to the evaporator 31 through the air return duct structure 18. The cool air blown from the evaporator 31 enters the freezing chamber 101 through the freezing air inlet 150 and returns to the evaporator 31 through the freezing air return 170. The two sets of circulation air paths of the freezing chamber 101 and the micro-freezing space 201 are completely separated and are only converged at the evaporator 31, so that the temperature of the two spaces is prevented from interfering with each other. On the contrary, when the second temperature value is lower than the set fourth temperature threshold T4 (hereinafter referred to as T4), the freezing damper 17 is closed. Wherein T3 is greater than T4. The evaporator 31 and the fan 33 continue to operate until the first temperature value is less than or equal to the set temperature T1, which indicates that the temperature in the micro-freezing space 201 is within the set temperature range, and the evaporator 31, the fan 33 and the micro-freezing damper 16 are closed.

In the right flowchart of fig. 11, during a normal operation stage of the refrigerator (no defrosting demand is detected), the micro freezing sensor 6 detects that the first temperature value is less than a set second temperature threshold T2 (hereinafter referred to as T2), where T1 is greater than T2. The slightly freezing air door 16 is opened first, and the freezing air door 17 is closed at the same time, so that subsequent hot air is prevented from entering the freezing chamber 101. The defrosting heating pipe of evaporimeter 31 is opened, and fan 33 is opened, changes the frost and simultaneously with hot-blast entering by the little air intake 110 that freezes the space 201 that freezes a little, blows off by the little return air inlet 130 that freezes, directly gets back to evaporimeter 31 through the little return air inlet 130 that freezes, by hot-blast heating coolant, the enclosure's in the cold-storage box 4 temperature is improved to the rethread coolant, avoids hot-blast direct blowing in enclosure to lead to eating the material to melt and freeze. The defrosting heating pipe and the fan 33 continue to operate until the first temperature value is greater than or equal to T2, which indicates that the temperature in the micro freezing space 201 is within the set temperature range, and at this time, the defrosting heating pipe and the fan 33 are controlled to be turned off.

In the middle flowchart of fig. 11, during the normal operation phase of the refrigerator (no defrosting demand is detected), the micro-freezing sensor 6 detects that the first temperature value is between T1 and T2 (including the first temperature value being equal to T1 or T2), which indicates that the temperature in the micro-freezing space 201 meets the set temperature requirement. At this point, the micro-freeze damper is closed. When the freezing sensor 7 detects that the second temperature value is greater than the set value T3, the freezing damper 17 at the freezing air inlet 150 is opened, and simultaneously, the evaporator 31 and the fan 33 are opened. On the other hand, when the second temperature value is lower than the set value T4, the freezing damper 17 is closed.

In another embodiment, please refer to a flowchart of a temperature control method of a refrigerator in a defrosting stage shown in fig. 12.

In the flow chart on the left side of fig. 12, during the defrosting phase of the refrigerator (a defrosting demand is detected), the freezer door 17 is closed to prevent subsequent hot air from entering the freezer compartment 101. When the temperature detected by the micro-freezing sensor 6 is greater than or equal to a set fifth temperature threshold T5 (hereinafter referred to as T5), it indicates that the temperature in the micro-freezing space 201 is within a set temperature range, the micro-freezing air door 16 is closed, the fan 33 is not opened, the temperature stability of the micro-freezing space 201 is prevented from being influenced by defrosting heat, only the defrosting heating pipe is opened, and only the defrosting process is performed at this time.

In the right flow chart in fig. 11, when the micro-freezing sensor 6 detects that the first temperature value is less than T5, the micro-freezing air door 16 is opened, the defrosting heating pipe is opened, the fan 33 is opened, and the defrosting air enters the micro-freezing space 201 from the micro-freezing air inlet 110, is blown out from the micro-freezing air return opening 130, and directly returns to the evaporator 31 through the micro-freezing air return opening 130. The cold storage agent is heated by hot air, the temperature of the closed space in the cold storage box 4 is increased by the cold storage agent until the temperature in the micro-freezing space 201 is within a set temperature range, the micro-freezing air door 16 and the fan 33 are closed, and defrosting is stopped.

In the above process, the temperature regulation in the cold storage box 4 is totally dependent on the radiation heat transfer of the inner wall of the box body 41, and no air exchange is performed with the micro-freezing space 201, so that the temperature stability of the enclosed space in the cold storage box 4 is prevented from being influenced by too low or too high temperature of the blown cold air or hot air.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A refrigerator, characterized in that:

a box body, a freezer compartment and an air duct communicated with the freezer compartment are formed inside;

The sealing assembly includes a plurality of partitions and a sealing structure arranged in the freezing chamber, and the plurality of the partitions are spliced with each other and connected to the sealing structure to jointly define an independently sealed micro-freezing space inside the freezing chamber , the micro-freezing space is also communicated with the air duct;

a refrigeration system, wherein the refrigerated cold air can enter the freezing chamber and the micro-freezing space respectively through the air duct;

A cold storage box, which is built in the micro-freezing space, the cold storage box includes a hollow box body, an outer shell covering the outer side of the box body, and a cold storage agent, and the interior of the box body is sealed for storage , an interlayer is formed between the box body and the outer shell, and the cold storage agent is uniformly accommodated in the interlayer.

2. The refrigerator according to claim 1, wherein:

The refrigerator further includes a micro-freezing sensor arranged in the box body; the micro-freezing sensor is used to detect the temperature in the box, and the micro-freezing sensor is electrically connected to the refrigeration system;

The micro-freezing space has a micro-freezing air inlet and a micro-freezing air return opening respectively communicated with the air duct; the refrigeration system includes a micro-freezing damper corresponding to the micro-freezing air inlet, and the micro-freezing damper is electrically operated. The micro-freezing sensor is connected and controlled to open and close the micro-freezing air inlet.

3. The refrigerator according to claim 2, wherein:

The refrigeration system further includes an evaporator, a fan and a defrosting heating pipe;

The evaporator, the defrosting heating pipe and the fan are respectively electrically connected and controlled by the micro-freezing sensor.

4. The refrigerator according to claim 1, wherein:

The refrigerator further includes a freezing sensor arranged in the freezing chamber; the freezing sensor is used to detect the temperature of the freezing chamber, and the freezing sensor is electrically connected to the refrigeration system;

The freezing chamber has a refrigerating air inlet and a refrigerating air outlet respectively communicated with the air duct; the refrigeration system includes a refrigerating damper corresponding to the refrigerating air inlet, and the refrigerating damper is electrically connected and controlled by the The freezing sensor is used to open and close the freezing air inlet.

5. The refrigerator according to claim 1, wherein:

The box body also includes a freezer inner bladder, and an air duct cover, an air duct back plate and a foam board that are arranged in the freezer inner bladder;

The air duct back plate and the air duct cover are relatively spaced apart, the foam board is sandwiched between the air duct cover and the air duct back, and the foam board and the air duct back There is a gap between them and an air duct is formed;

The foam board is provided with a micro-freezing air inlet, the micro-freezing return air outlet, and the freezing air inlet in sequence from top to bottom; the foam board is connected to the bottom of the freezer box. There is a gap between them and a freezing return air port is formed, and the freezing air return port is communicated with the micro-freezing air return air port.

6. The refrigerator according to claim 5, wherein:

a plurality of the baffles include vertical baffles, transverse baffles and front baffles;

The vertical partitions are respectively connected to the top and bottom of the inner wall of the freezer, and the rear ends of the vertical partitions are connected to the air duct cover, and the horizontal partitions are horizontally connected to the between the vertical partition plate and the air duct cover plate; the vertical partition plate, the horizontal partition plate, the air duct cover plate and the inner peripheral wall of the freezer box are enclosed to form an opening facing the front cavity;

The sealing structure is disposed around the opening, and the front partition is attached to the sealing structure to seal the opening.

7. A temperature control method for a refrigerator, comprising:

Obtain the first temperature value inside the cold storage box in the freezing chamber through the micro-freezing sensor;

When the first temperature value is greater than the set first temperature threshold, the micro-freezing damper, the evaporator and the fan are all turned on;

When the first temperature value is less than the set second temperature threshold value, the freezing damper is closed, the micro-freezing damper, the defrosting heating pipe and the fan are all opened, and the first temperature threshold value is greater than the second temperature threshold value;

The micro-freeze damper is closed when the first temperature value is between the first temperature threshold and the second temperature threshold.

8. The method according to claim 7, wherein when the first temperature value is greater than the set first temperature threshold, the method further comprises:

When the first temperature value is greater than the set first temperature threshold, the micro-freezing damper is opened;

Obtain the second temperature value inside the freezing chamber through the freezing sensor;

When the second temperature value is greater than the set third temperature threshold, the freezing damper, the evaporator and the fan are all turned on;

When the second temperature value is less than the set fourth temperature threshold value, the freezing damper is closed, and both the evaporator and the fan are turned on, and the third temperature threshold value is greater than the fourth temperature threshold value.

9. The method according to claim 7, wherein when the first temperature value is less than the set second temperature threshold, the method further comprises:

When the first temperature value is less than the set second temperature threshold value, the micro-freezing damper is opened;

The freezer damper is closed;

Both the defrost heating pipe and the fan are turned on.

10. The method of claim 7, comprising:

When the control system of the refrigerator receives the defrosting instruction, the freezing damper is closed;

When the first temperature value is greater than or equal to the set fifth temperature threshold value, the micro-freezing damper is closed, and the defrosting heating pipe is opened;

When the first temperature value is less than the fifth temperature threshold value, the micro-freezing damper, the fan and the defrosting heating pipe are all turned on.