Quick-cooling variable-temperature space air duct system and refrigerator

Abstract

The utility model discloses a temperature-changing space air duct system capable of rapidly cooling and a refrigerator, relates to the field of refrigerator air duct systems, and aims to solve the problems that a temperature-changing chamber in the prior art is slow in cooling and cannot realize rapid refrigeration, and adopts the technical scheme that a first air opening is formed in the side wall of the temperature-changing chamber and is communicated with a freezing chamber; a quick-freezing fan is installed at the first air opening and can suck low-temperature cold air flow in the freezing chamber into the variable-temperature chamber so that the variable-temperature chamber can be quickly cooled, a second air opening is formed in the refrigeration air duct and communicates with the variable-temperature chamber, and cold air flow in the variable-temperature chamber can enter the variable-temperature chamber to assist in cooling, and air doors are additionally installed at the first air opening and the second air opening. And the communication state of the temperature changing chamber can be precisely regulated and controlled, so that different cooling and heat preservation requirements are met. The variable-temperature chamber can be rapidly cooled, and the effects of rapidly refrigerating food and reducing loss of nutrient substances of the food are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of refrigerator air duct system, specifically a variable temperature space air duct system and refrigerator for rapid cooling. Background Technology

[0002] In existing refrigerators, especially side-by-side refrigerators with a single refrigeration system, the variable temperature compartment is cooled by air convection with the freezer compartment. This cooling method is inefficient and the temperature drops slowly, making it impossible to quickly refrigerate food placed in the variable temperature compartment. This results in a significant loss of nutrients in the food and makes it difficult to meet the need for rapid temperature reduction in the variable temperature compartment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a variable temperature space air duct system and refrigerator for rapid cooling, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model discloses a rapid cooling variable temperature space air duct system. The technical solution includes a cabinet containing a variable temperature compartment, a freezer compartment, and a refrigerator compartment. The freezer compartment is connected to a freezer air duct, and the refrigerator compartment is connected to a refrigerator air duct. It also includes a control device. A circulating fan is located within the refrigerator air duct. The circulating fan and the control device are electrically connected. Both the freezer and refrigerator air ducts are connected to an evaporator compartment. The variable temperature compartment is connected to the freezer compartment or the freezer air duct via a first air vent. A quick-freezing fan is installed at the first air vent, which blows low-temperature cold air from the freezer compartment or the freezer air duct into the variable temperature compartment, rapidly cooling it and achieving rapid refrigeration. The refrigerator air duct or the refrigerator compartment is connected to the variable temperature compartment via a second air vent, enabling different usage requirements for the variable temperature compartment. The variable temperature compartment is connected to the evaporator compartment via a return air vent, allowing for the circulation of cold air within the variable temperature compartment. The quick-freezing fan and the control device are electrically connected.

[0005] As a preferred technical solution of this utility model, a drawer is slidably connected inside the variable temperature compartment, and the drawer is connected to the variable temperature compartment, which can realize the classification and layered storage of food while allowing the food in the drawer to be quickly refrigerated.

[0006] As a preferred embodiment of this utility model, the return air inlet includes a first return air inlet, a second return air inlet, and a third return air inlet. The first and second return air inlets connect the variable temperature chamber and the evaporator compartment, and the third return air inlet connects the cold storage chamber and the evaporator compartment.

[0007] In a preferred embodiment of this invention, the first air vent and the second air vent are respectively equipped with a first damper and a second damper, both of which are electrically connected to the control device. The dampers enable more precise temperature control and prevent the temperature of the variable temperature compartment from rising due to airflow from the refrigeration duct when the temperature of the variable temperature compartment is lower than that of the refrigeration compartment.

[0008] This utility model also discloses a refrigerator based on the above-mentioned rapid cooling variable temperature space air duct system, which uses a cabinet liner that employs the above-mentioned rapid cooling variable temperature space air duct system.

[0009] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model connects the variable temperature compartment to the freezer compartment or freezer duct through a first air vent, and installs a quick-freezing fan at the first air vent, thereby enabling the variable temperature compartment to cool down rapidly, achieving the effect of quickly refrigerating food and reducing the loss of nutrients in food. Connecting the variable temperature compartment to the refrigeration duct through a second air vent allows the cold airflow from the refrigeration duct to assist in cooling the variable temperature compartment or bring it to the temperature of the freezer compartment. Adding air dampers at the air vents enables more precise temperature control, and when the temperature of the variable temperature compartment is lower than the temperature of the freezer compartment, or when it reaches the set temperature, the air dampers can be closed in time to facilitate the insulation of the variable temperature compartment. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the right-side structure of this utility model;

[0012] Figure 3 This is a schematic diagram of the AA cross-sectional structure of this utility model;

[0013] Figure 4 This is a front view structural diagram of the present invention;

[0014] Figure 5 This is a schematic diagram of the BB cross-sectional structure of this utility model;

[0015] Figure 6 This is a schematic diagram of the CC cross-sectional structure of this utility model.

[0016] In the diagram: 1. Inner chamber; 2. Variable temperature compartment; 201. Drawer; 3. Freezer compartment; 4. Refrigerator compartment; 5. First air vent; 6. Quick-freezing fan; 7. Second air vent; 8. Refrigeration air duct; 9. Evaporator compartment; 10. First return air vent; 11. Second return air vent; 12. Third return air vent. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0018] like Figures 1 to 6 As shown, this utility model first discloses a rapid cooling variable temperature space air duct system. The technical solution adopted includes a cabinet 1, which is a double-opening type. The cabinet 1 contains a variable temperature compartment 2, a freezer compartment 3, and a refrigerator compartment 4. The freezer compartment 3 is on the left side of the cabinet 1, and the refrigerator compartment 4 is on the right side of the cabinet 1. The variable temperature compartment 2 is located in the lower space of the refrigerator compartment 4, and two drawers 201 are slidably connected inside the variable temperature compartment 2. The cabinet 1 has a refrigerator air duct 8, which is connected to the refrigerator compartment 4. The refrigerator air duct 8 has a circulating fan to promote the circulation of cold air. The cabinet 1 also has an evaporator compartment 9, which contains an evaporator for absorbing heat and providing cooling. The evaporator compartment 9 is located behind the freezer compartment 3. The evaporator compartment 9 and the refrigerator compartment 4 are connected by a third return air vent 12, so that the cold air blown into the refrigerator compartment 4 by the refrigerator air duct 8 can be blown into the evaporator compartment 9 through the third return air vent 12 for circulation. It also includes a control device. Temperature sensors are installed in the variable temperature compartment 2, the freezer compartment 3, and the refrigerator compartment 4. The temperature sensors and the circulating fan are electrically connected to the microprocessor in the control device, thereby achieving precise control of the compartment temperature.

[0019] To achieve rapid refrigeration in the variable temperature compartment 2, a first air vent 5 is provided on the side wall of the variable temperature compartment 2. A first auxiliary air vent corresponding to the position of the first air vent 5 is provided on the side walls of the refrigeration compartment 4 and the freezer compartment 3. The variable temperature compartment 2 is connected to the freezer compartment 3 through the first air vent 5 and the auxiliary air vent. In order to allow the low-temperature cold airflow in the freezer compartment 3 to enter the variable temperature compartment 2 more quickly, a quick-freezing fan 6 is installed on the side of the first air vent 5 near the variable temperature compartment 2. The air outlet of the quick-freezing fan 6 is located inside the variable temperature compartment 2. To facilitate the circulation of cold air within the variable temperature compartment 2, a second return air vent 11 is provided on the side wall of the variable temperature compartment 2. This second return air vent 11 connects the cold storage compartment 4 and the variable temperature compartment 2, allowing the cold air blown into the variable temperature compartment 2 by the quick-freezing fan 6 to enter the cold storage compartment 4 through the second return air vent 11. A first return air vent 10, corresponding to the second return air vent 11, is also provided between the cold storage compartment 4 and the evaporator compartment 9, allowing the cold air blown from the second return air vent 11 to directly enter the evaporator compartment 9 through the first return air vent 10, thus achieving cold air circulation. Ventilation openings are provided on the upper drawer 201, connecting it to the variable temperature compartment 2. The lower drawer 201 is directly connected to the variable temperature compartment 2 through a top opening, thereby accelerating the cooling of the variable temperature compartment 2 and the drawer 201. The quick-freezing fan 6 is electrically connected to the microprocessor in the control device.

[0020] To further assist in cooling the variable temperature chamber 2 and to meet the requirement that the variable temperature chamber 2 has a temperature close to that of the cold storage chamber 4, a second air vent 7 is opened on the cold storage air duct 8. A second auxiliary air vent corresponding to the position of the second air vent 7 is opened on the variable temperature chamber 2. The second air vent 7 is connected to the variable temperature chamber 2 through the second auxiliary air vent, so that the cold air in the cold storage air duct 8 can enter the variable temperature chamber 2 to assist in cooling in the initial stage of cooling of the variable temperature chamber 2. The ventilation opening of the upper drawer 201 corresponds to the position of the second air vent 7, so that the second air vent 7 can enter the upper drawer 201 more smoothly. The cold air blown into the variable temperature chamber 2 (outside the upper drawer 201) by the second air vent 7 enters the lower drawer 201 directly from the opening above the lower drawer 201, thereby further shortening the cooling time of the variable temperature chamber 2.

[0021] In order to promptly disconnect the connection between the variable temperature compartment 2 and the refrigerator compartment 4 when the temperature drops below the refrigerator compartment 4 or reaches the set temperature, or to put the variable temperature compartment 2 into a heat preservation state, dampers are installed on the outside of the first air vent 5 and the second air vent 7. The first damper installed on the first air vent 5 passes through the first auxiliary air vent and enters the freezer compartment 3, and the second damper installed on the second air vent 7 passes through the second auxiliary air vent but does not enter the ventilation opening of the upper drawer 201. The dampers are electrically connected to the microprocessor in the control device.

[0022] The working principle of this utility model:

[0023] After food is placed in drawer 201 of the variable temperature compartment 2, drawer 201 is closed, the refrigerator door is closed, and the temperature of the variable temperature compartment 2 is set, the microprocessor in the control device detects the temperature in the variable temperature compartment 2 through the temperature sensor. If it is not higher than the set temperature, the first and second air doors are kept closed to maintain the temperature of the variable temperature compartment 2.

[0024] If the temperature in the variable temperature chamber 2 is higher than the set temperature, and the set temperature is higher than the temperature in the refrigerator chamber 4, the microprocessor opens the first and second air dampers and starts the quick-freezing fan 6. The quick-freezing fan 6 quickly draws the low-temperature cold air from the freezer chamber 3 into the variable temperature chamber 2 through the first air vent 5. At the same time, the cold air from the refrigerator air duct 8 enters the variable temperature chamber 2 through the second air vent 7, causing the variable temperature chamber 2 to cool down quickly and achieve the effect of rapid refrigeration. When the set temperature is reached, the quick-freezing fan 6 is stopped, and the first and second air dampers are closed, entering the heat preservation state.

[0025] If the temperature in the variable temperature compartment 2 is higher than the set temperature, and the set temperature is lower than the temperature in the refrigerator compartment 4, the microprocessor opens the first and second air dampers and starts the quick-freezing fan 6. The quick-freezing fan 6 quickly draws the low-temperature cold air from the freezer compartment 3 into the variable temperature compartment 2 through the first air vent 5. At the same time, the cold air from the refrigerator air duct 8 enters the variable temperature compartment 2 through the second air vent 7, causing the variable temperature compartment 2 to cool down rapidly. When it reaches the temperature of the refrigerator compartment 4, the second air damper in the second air vent 7 is closed to prevent the temperature in the variable temperature compartment 2 from negatively affecting the temperature in the refrigerator compartment 4, and the temperature in the variable temperature compartment 2 continues to be cooled down. After it reaches the set temperature, the quick-freezing fan 6 is stopped and the first air damper in the first air vent 5 is closed, and the compartment enters the heat preservation state, achieving the effect of rapid refrigeration.

[0026] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0027] The control devices, dampers, quick-freezing fan 6, and other components not described in detail in this article are all prior art.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid cooling variable temperature space air duct system, comprising a box liner (1), wherein the box liner (1) contains a variable temperature chamber (2), a freezer chamber (3), and a refrigerator chamber (4), the freezer chamber (3) is connected to a freezer air duct, the refrigerator chamber (4) is connected to a refrigerator air duct (8), and further comprising a control device, wherein a circulating fan is present in the refrigerator air duct (8), a temperature sensor is present in the variable temperature chamber (2), the circulating fan, the temperature sensor, and the control device are electrically connected, and both the freezer air duct and the refrigerator air duct (8) are connected to an evaporator compartment (9), characterized in that: The variable temperature chamber (2) is connected to the freezer chamber (3) or the freezer duct through the first air vent (5), and a quick-freezing fan (6) is installed at the first air vent (5); the refrigeration duct (8) or the refrigeration chamber (4) is connected to the variable temperature chamber (2) through the second air vent (7); the variable temperature chamber (2) is connected to the evaporator chamber (9) through the return air vent; the quick-freezing fan (6) and the control device are electrically connected.

2. The rapid cooling variable temperature space air duct system according to claim 1, characterized in that: A drawer (201) is slidably connected inside the variable temperature chamber (2), and the drawer (201) is connected to the variable temperature chamber (2).

3. The rapid cooling variable temperature space air duct system according to claim 2, characterized in that: The return air vents include a first return air vent (10), a second return air vent (11), and a third return air vent (12). The first return air vent (10) and the second return air vent (11) connect the variable temperature chamber (2) and the evaporator chamber (9), and the third return air vent (12) connects the cold storage chamber (4) and the evaporator chamber (9).

4. The rapid cooling variable temperature space air duct system according to claim 1, characterized in that: The first air vent (5) and the second air vent (7) are respectively equipped with a first air damper and a second air damper, and both the first air damper and the second air damper are electrically connected to the control device.

5. A refrigerator, characterized in that: The liner (1) of the variable temperature space duct system for rapid cooling as described in any one of claims 1-4.

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