Cross-temperature-zone adjusting system, refrigeration equipment and temperature control strategy

Abstract

The invention relates to the technical field of refrigeration equipment, and provides a cross-temperature-zone adjusting system which comprises a refrigeration unit and a control unit used for controlling starting or stopping of the refrigeration unit. A comparison module; a feedback temperature sensor; the bypass air volume adjusting unit is used for blocking part of the cold air flow from the refrigeration unit and blowing the blocked cold air flow to the feedback temperature sensor; and the control unit is provided with a comparison module which is used for comparing T < set > with T < reverse > and sending a corresponding control signal to the refrigeration unit according to a comparison result. Therefore, the flow of the cold air flow is adjusted through the bypass air volume adjusting unit, and the actual temperature in the storage chamber can be adjusted. On the premise that the structure of the refrigerating system is not changed, the temperature control range of the storage chamber is greatly increased, cross-temperature-zone temperature adjustment of the storage chamber is achieved, the storage function is improved, and diversified storage requirements are met. The invention further provides refrigeration equipment and a temperature control strategy.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigeration equipment, and particularly relates to a cross-temperature zone regulation system, a refrigeration equipment and a temperature control strategy. Background Art

[0002] Existing refrigerators usually have multiple storage compartments such as a refrigerating compartment, a variable-temperature compartment, a freezing compartment, etc., which can store different food materials respectively. However, the overall volume of a multi-temperature zone refrigerator is large and the purchase cost is high. For users in single apartments, dormitories or shared rentals, there is generally a situation where the amount of items stored is small, but the storage needs are variable.

[0003] For example, in summer, the storage amount of fresh fruits, vegetables, beverages and other items is large, and in winter, the storage amount of frozen food materials and other items is large. Using a three-temperature zone refrigerator has a low cost performance and a high purchase price; using a small single-temperature zone refrigerator or freezer is difficult to meet the diverse storage needs. Therefore, the existing products are difficult to meet the needs of such users.

[0004] In summary, it is obvious that there are inconveniences and defects in the actual use of the existing technology, so it is necessary to improve it. Summary of the Invention

[0005] Aiming at the above defects, the present invention mainly provides a cross-temperature zone regulation system to solve the technical problems of small temperature regulation range in the storage area and inapplicability to diverse storage.

[0006] To solve the above problems, the present invention provides a cross-temperature zone regulation system, including:

[0007] A refrigeration unit for refrigerating and generating cold air flow;

[0008] A control unit for controlling the start or stop of the refrigeration unit; having a comparison module;

[0009] A feedback temperature sensor for detecting the temperature and sending a corresponding feedback signal to the control unit;

[0010] A bypass air volume regulation unit for intercepting part of the cold air flow from the refrigeration unit and blowing the intercepted cold air flow to the feedback temperature sensor;

[0011] The control unit has a comparison module; the comparison module is configured to: receive the temperature preset value T 设 input by the control unit and the temperature feedback value T 反 input by the feedback temperature sensor; compare the magnitude relationship between T 设 and T 反 , and send a corresponding control signal to the refrigeration unit according to the comparison result; specifically:

[0012] T 设 ≥T反 , send a shutdown signal to the refrigeration unit;

[0013] T 设 <T 反 , the refrigeration unit keeps running or a startup signal is sent to the refrigeration unit.

[0014] According to the cross-temperature zone regulation system of the present invention, the bypass air volume regulation unit includes a cover plate and an air duct plate; an air duct is provided on the air duct plate, and an air inlet for connecting the refrigeration unit and introducing cold air flow is provided at one end of the air duct;

[0015] An installation cavity is formed on one side of the air duct plate, and the feedback temperature sensor fixed on the cover plate is provided in the installation cavity;

[0016] A wind dam is convexly provided in the air duct, an air guiding cavity is formed in the wind dam, and an air volume regulating seat is rotatably arranged in the air guiding cavity; an air guiding duct connecting the air duct and the air guiding cavity is further provided on the wind dam;

[0017] Side ring plates are fixedly arranged around the air volume regulating seat, and a wind storage cavity is formed in the area surrounded by the side ring plates; a plurality of ventilation holes communicating with the wind storage cavity are formed on the end surface of the air volume regulating seat; a ventilation notch is formed on the side ring plate;

[0018] A bypass air duct capable of connecting the wind storage cavity and the installation cavity is clamped between the cover plate and the air duct plate;

[0019] The air volume regulating seat is configured to rotate in the air guiding cavity to adjust the opening degree of the ventilation notch relative to the bypass air duct, so as to adjust the flow rate of the cold air flow in the bypass air duct.

[0020] According to the cross-temperature zone regulation system of the present invention, an installation seat for fixing the feedback temperature sensor is provided in the installation cavity.

[0021] According to the cross-temperature zone regulation system of the present invention, a plurality of air guiding holes are formed on the installation seat.

[0022] According to the cross-temperature zone regulation system of the present invention, a knob for connecting the air volume regulating seat is provided on the cover plate.

[0023] According to the cross-temperature zone regulation system of the present invention, a plurality of insertion plates are provided at the central position of the air volume regulating seat, and a plurality of slots inserted and matched with the insertion plates are provided at the central position of the knob.

[0024] According to the cross-temperature zone regulation system of the present invention, a damper for adjusting the air intake volume is provided at the air inlet.

[0025] A refrigeration device with the described cross-temperature zone regulation system, the refrigeration device having a storage compartment; the bypass air volume regulation unit and the feedback temperature sensor are provided in the storage compartment; a direct display temperature sensor is also provided in the storage compartment.

[0026] For the refrigeration device according to the present invention, the refrigeration device is a refrigerator or a freezer.

[0027] A temperature control strategy based on the refrigeration device, comprising the following steps:

[0028] S1, blowing cold air flow to the feedback temperature sensor through the bypass air volume regulation unit;

[0029] S2, when the refrigeration unit stops for a predetermined period of time, detecting and recording the actual temperature value in the storage compartment through the direct display temperature sensor;

[0030] S3, changing the flow rate of the cold air flow blown by the bypass air volume regulation unit to the feedback temperature sensor; and marking the gear of this flow rate;

[0031] S4, repeating steps S1 and S2 until the marking of a predetermined number of gears is completed;

[0032] S5, establishing the corresponding relationship between the flow rate gear and the actual temperature value in the storage compartment;

[0033] S6, adjusting the gear of the bypass air volume regulation unit to control the actual temperature value in the storage compartment.

[0034] In summary, for the cross-temperature zone regulation system of the present invention, by adjusting the flow rate of the cold air flow through the bypass air volume regulation unit, the actual temperature in the storage compartment can be adjusted. Without changing the structure of the refrigeration system, the temperature control range of the storage compartment is greatly increased, the cross-temperature zone temperature regulation of the storage compartment is realized, the storage function is improved, and the diversified storage requirements are met. The present invention also provides a refrigeration device and a temperature control strategy. Description of the Drawings

[0035] Figure 1 is a schematic structural diagram of the cross-temperature zone regulation system of the present invention;

[0036] Figure 2 is a schematic structural diagram of the bypass air volume regulation unit of the present invention;

[0037] Figure 3 is Figure 2 the schematic structural diagram in the A direction in

[0038] Figure 4 is Figure 3 the sectional structural diagram of the local area in

[0039] Figure 5It is a structural schematic diagram of the knob and the air adjustment seat of the present invention;

[0040] In the figure: 1-refrigeration unit, 11-control unit, 12-comparison module, 13-bypass air volume adjustment unit; 2-feedback temperature sensor, 3-cover plate, 31-installation cavity, 32-bypass air duct, 33-installation seat, 34-air guide hole; 4-air duct plate, 41-air inlet, 42-ventilation duct, 43-wind dam, 44-air duct; 5-knob, 51-slot; 6-air adjustment seat, 61-ventilation hole, 62-side ring plate, 63-air storage cavity, 64-ventilation gap, 65-plug plate. DETAILED DESCRIPTION

[0041] See also Figure 1 The present invention provides a cross-temperature zone regulation system, comprising:

[0042] Refrigeration unit 1, used for refrigeration and generating cold air flow;

[0043] The control unit 11 is used to control the start or stop of the refrigeration unit 1; it has a comparison module 12;

[0044] The feedback temperature sensor 2 is used to detect the temperature and send a corresponding feedback signal to the control unit 11;

[0045] The bypass air volume adjustment unit 13 is used to intercept part of the cold air flow from the refrigeration unit 1 and blow the intercepted cold air flow toward the feedback temperature sensor 2;

[0046] The control unit 11 has a comparison module 12;

[0047] The comparison module 12 is configured to: receive the preset temperature value T input by the control unit 11 设 And the temperature feedback value T input by feedback temperature sensor 2 反 ; Compare T 设 With T 反 and sends a corresponding control signal to the refrigeration unit 1 according to the comparison result; specifically:

[0048] T 设 ≥T 反 , sending a shutdown signal to refrigeration unit 1;

[0049] T 设 <T 反 , the refrigeration unit 1 keeps running or sends a start signal to the refrigeration unit 1;

[0050] Optionally, the refrigeration unit 1 of the present invention may adopt a known structure, including a compressor, a throttle valve, a condenser and an evaporator that are cyclically connected in sequence, and also includes a fan for conveying a cold air flow.

[0051] The shutdown signal sent by the control unit 11 can shut down the compressor or the blower.

[0052] See Figure 2 , as an embodiment, the bypass air volume adjustment unit 13 of the present invention includes a cover plate 3 and an air duct plate 4; combined with Figure 3 , a ventilation duct 42 is provided on the air duct plate 4, and an air inlet 41 for communicating with the refrigeration unit 1 and introducing cold air flow is provided at one end of the ventilation duct 42;

[0053] Furthermore, a damper for adjusting the air intake volume is provided at the air inlet 41.

[0054] An installation cavity 31 is formed on one side of the air duct plate 4, and the feedback temperature sensor 2 fixed on the cover plate 3 is provided in the installation cavity 31;

[0055] See Figure 3 and Figure 4 , a wind dam 43 is protruded in the ventilation duct 42, an air guiding cavity is formed in the wind dam 43, and an air volume adjusting seat 6 is rotatably arranged in the air guiding cavity; an air guiding duct 44 communicating the ventilation duct 42 and the air guiding cavity is further provided on the wind dam 43;

[0056] Combined with Figure 5 , a side ring plate 62 is fixedly arranged around the air volume adjusting seat 6, and a wind storage cavity 63 is formed in the area surrounded by the side ring plate 62; a plurality of ventilation holes 61 communicating with the wind storage cavity 63 are formed on the end surface of the air volume adjusting seat 6; a ventilation notch 64 is formed on the side ring plate 62;

[0057] A bypass air duct 32 capable of communicating the wind storage cavity 63 and the installation cavity 31 is clamped between the cover plate 3 and the air duct plate 4;

[0058] The air volume adjusting seat 6 is configured to rotate in the air guiding cavity to adjust the opening degree of the ventilation notch 64 relative to the bypass air duct 32, thereby adjusting the flow rate of the cold air flow in the bypass air duct 32;

[0059] The present invention adjusts the operation duration of the refrigeration unit 1 by adjusting the opening degree of the ventilation notch 64 relative to the bypass air duct 32; specifically:

[0060] If the opening degree of the ventilation notch 64 relative to the bypass air duct 32 is large, the flow rate of the cold air flow in the bypass air duct 32 is large, and the temperature value T detected by the feedback temperature sensor 2 反 , can quickly reach or be lower than the preset value T 设 ; thereby shortening the operation duration of the refrigeration unit 1;

[0061] If the opening degree of the ventilation notch 64 relative to the bypass air duct 32 is small, the flow rate of the cold air flow in the bypass air duct 32 is small, and the temperature value T detected by the feedback temperature sensor 2反 , it can reach or be lower than the preset value T 设 for a relatively long time, thereby increasing the operating duration of the refrigeration unit 1;

[0062] As an embodiment, an installation seat 33 for fixing the feedback temperature sensor 2 is provided in the installation cavity 31;

[0063] Furthermore, a plurality of air guide holes 34 are formed on the installation seat 33, so that the cold air flow blows uniformly towards the feedback temperature sensor 2, improving the control accuracy.

[0064] As an embodiment, a knob 5 for connecting the air regulating seat 6 is provided on the cover plate 3; by rotating the knob 5, the opening degree of the ventilation notch 64 relative to the bypass air duct 32 can be conveniently adjusted;

[0065] Furthermore, a plurality of insertion plates 65 are provided at the central position of the air regulating seat 6, and a plurality of slots 51 for plugging and matching with the insertion plates 65 are provided at the central position of the knob 5; it is convenient for installation.

[0066] The present invention also provides a refrigeration device having the cross-temperature zone adjustment system described above, the refrigeration device having a storage compartment; the bypass air volume adjustment unit 13 and the feedback temperature sensor 2 as described above are provided in the storage compartment;

[0067] A direct display temperature sensor for detecting the actual temperature of the compartment is also provided in the storage compartment;

[0068] As an implementation manner, the present invention can set the target refrigeration temperature of the storage compartment, that is, the temperature preset value T 设 ; for example, T 设 = -20 °C;

[0069] When the bypass air duct 32 of the bypass air volume adjustment unit 13 is closed and no cold air flow is blown towards the feedback temperature sensor 2, when the actual temperature in the storage compartment reaches or is lower than -20 °C, the refrigeration unit 1 stops operating.

[0070] The present invention blows cold air flow towards the feedback temperature sensor 2 through the bypass air volume adjustment unit 13, so that the temperature feedback value T 反 quickly reaches the state of T 设 ≥T 反 , and the refrigeration unit 1 stops operating; at this time, the actual temperature in the storage compartment can be measured by the direct display temperature sensor.

[0071] After the refrigeration unit 1 stops operating, after a period of time, the temperature feedback value T detected by the feedback temperature sensor 2 反 >T 设; At this time, the refrigeration unit 1 starts, and the bypass air volume adjustment unit 13 blows cold air flow to the feedback temperature sensor 2 again until the refrigeration unit 1 stops, completing a refrigeration cycle.

[0072] By adjusting the flow rate of the cold air flow through the bypass air volume adjustment unit 13, the actual temperature inside the storage room can be adjusted. For example, by increasing the flow rate of the cold air flow, the actual temperature inside the storage room can be controlled to be between -5°C and -10°C; or between 0°C and 10°C. Without changing the structure of the refrigeration system, the temperature control range of the storage room is greatly increased, realizing the cross-temperature zone temperature adjustment of the storage room, improving the storage function, and meeting diverse storage needs.

[0073] Optionally, the refrigeration device of the present invention is a refrigerator or a freezer.

[0074] The present invention also provides a temperature control strategy based on the refrigeration device, including the following steps:

[0075] S1, blowing cold air flow to the feedback temperature sensor 2 through the bypass air volume adjustment unit 13;

[0076] S2, when the refrigeration unit 1 has stopped for a predetermined period of time, detecting and recording the actual temperature value inside the storage room through the direct display temperature sensor;

[0077] The stop time of the present invention is adaptively set based on the stability of the temperature value detected by the direct display temperature sensor.

[0078] S3, changing the flow rate of the cold air flow blown by the bypass air volume adjustment unit 13 to the feedback temperature sensor 2; and marking the gear of this flow rate;

[0079] S4, repeating steps S1 and S2 until a predetermined number of gear markings are completed;

[0080] S5, establishing the corresponding relationship between the flow rate gear and the actual temperature value of the storage room;

[0081] S6, adjusting the gear of the bypass air volume adjustment unit 13 to control the actual temperature value of the storage room;

[0082] Optionally, the temperature values corresponding to each gear of the present invention are marked on the knob 5, and the user can adjust the temperature of the storage room by turning the knob 5, which is convenient to operate.

[0083] In summary, the present invention provides a cross-temperature zone regulation system. By adjusting the flow rate of the cold air flow through the bypass air volume regulation unit, the actual temperature inside the storage room can be adjusted. Without changing the structure of the refrigeration system, the temperature control range of the storage room is greatly increased, realizing cross-temperature zone temperature regulation of the storage room, improving the storage function, and meeting diverse storage requirements. The present invention also provides a refrigeration device and a temperature control strategy.

[0084] Of course, the present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A cross-temperature zone regulation system, characterized in that: include: A refrigeration unit, used for cooling and generating a cold air flow; A control unit, used to control the start or stop of the refrigeration unit; With comparison module; A feedback temperature sensor is used to detect the temperature and send a corresponding feedback signal to the control unit; A bypass air volume adjustment unit, used for intercepting part of the cold air flow from the refrigeration unit and blowing the intercepted cold air flow toward the feedback temperature sensor; The control unit has a comparison module; the comparison module is configured to: receive a preset temperature value T input by the control unit 设 And the temperature feedback value T input by the feedback temperature sensor 反 ; Compare T 设 With T 反 and send a corresponding control signal to the refrigeration unit according to the comparison result; specifically: T 设 ≥T 反 , sending a shutdown signal to the refrigeration unit; T 设 <T 反 , the refrigeration unit remains in operation or a start signal is sent to the refrigeration unit.

2. The cross-temperature zone regulation system according to claim 1, characterized in that: The bypass air volume adjustment unit comprises a cover plate and an air duct plate; the air duct plate is provided with a ventilation duct, and one end of the ventilation duct is provided with an air inlet for connecting with the refrigeration unit and introducing cold air flow; A mounting cavity is provided on one side of the air duct plate, and the feedback temperature sensor fixed on the cover plate is provided in the mounting cavity; A wind dam is provided in the ventilation duct, a wind induction cavity is provided in the wind dam, and a wind regulating seat is rotatably provided in the wind induction cavity; an air induction duct connecting the ventilation duct and the wind induction cavity is also provided on the wind dam; A side ring plate is fixedly arranged around the air regulating seat, and the area surrounded by the side ring plate forms an air storage cavity; a plurality of ventilation holes connected to the air storage cavity are opened on the end surface of the air regulating seat; a ventilation gap is opened on the side ring plate; A bypass air duct capable of connecting the air storage cavity and the installation cavity is sandwiched between the cover plate and the air duct plate; The air regulating seat is configured to rotate in the air induction cavity to adjust the opening of the ventilation gap relative to the bypass air duct, thereby adjusting the flow rate of the cold air flow in the bypass air duct.

3. The cross-temperature zone regulation system according to claim 2, characterized in that: A mounting seat for fixing the feedback temperature sensor is arranged in the mounting cavity.

4. The cross-temperature zone regulation system according to claim 3, characterized in that: The mounting seat is provided with a plurality of air guide holes.

5. The cross-temperature zone regulation system according to claim 2, characterized in that: The cover plate is provided with a knob connected to the air regulating seat.

6. The cross-temperature zone regulation system according to claim 5, characterized in that: A plurality of plug-in plates are arranged at the center of the air regulating seat, and a plurality of slots which are plugged and matched with the plug-in plates are arranged at the center of the knob.

7. The cross-temperature zone regulation system according to claim 2, characterized in that: The air inlet is provided with a damper for adjusting the air intake volume.

8. A refrigeration device having a cross-temperature zone regulation system according to any one of claims 1 to 7, characterized in that: The refrigeration equipment has a storage compartment; the bypass air volume adjustment unit and the feedback temperature sensor are arranged in the storage compartment; and a direct display temperature sensor is also arranged in the storage compartment.

9. The refrigeration device according to claim 8, characterized in that: The refrigeration equipment is a refrigerator or a freezer.

10. A temperature control strategy based on the refrigeration device according to claim 8, comprising the following steps: S1, blowing cold air flow to the feedback temperature sensor through the bypass air volume adjustment unit; S2, when the refrigeration unit is shut down for a predetermined period of time, the actual temperature value in the storage room is detected and recorded by the direct display temperature sensor; S3, changing the flow rate of the cold air flow blown by the bypass air volume adjustment unit to the feedback temperature sensor; and marking the gear position of the flow rate; S4, repeating steps S1 and S2 until a predetermined number of gear position markings are completed; S5, establishing a corresponding relationship between the flow rate level and the actual temperature value of the storage compartment; S6, adjust the gear position of the bypass air volume adjustment unit to control the actual temperature value of the storage room.

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