Refrigerator and refrigeration control method

Abstract

The invention particularly relates to a refrigerator and a refrigeration control method. The refrigerator comprises a refrigerator body and a refrigerating system arranged in the refrigerator body, and a compressor cabin is formed at the bottom of the refrigerator body; the refrigerating system comprises a compressor, a condenser, a throttling component and an evaporator which are connected in sequence; the compressor and the condenser are respectively arranged in the compressor cabin; the compressor cabin is further provided with a condensation fan used for cooling the condenser, and the box body is further provided with an air inlet and an air outlet which are communicated with the interior and the exterior of the compressor cabin. The refrigerator further comprises a collecting unit, an air door arranged at the air inlet and a driving mechanism. The acquisition unit comprises a first temperature sensor arranged at the top of the box body and a second temperature sensor arranged at the air inlet; wherein the acquisition unit is electrically connected with the driving mechanism. The air inlet amount of the air inlet is adjusted through the temperature difference value of the first temperature and the second temperature, and the air conditioner has the advantages of being high in refrigeration efficiency, energy-saving and efficient.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, in particular to a refrigerator and a refrigeration control method. Background Art

[0002] In recent years, with the accelerated pace of life and the improvement of life quality, users' demand for large-capacity refrigerators has increased significantly. As the functional areas of refrigerators have become more and more diversified, the ingredients in users' refrigerators are no longer limited to fruits, vegetables and meat. More ingredients are put into refrigerators, such as: breast milk, milk powder, wild delicacies, tea, medicines, cosmetics...

[0003] In this case, if the refrigerator has poor cooling or no cooling problem, it may cause the food in the user's refrigerator to be damaged, causing huge losses to the user and causing user complaints.

[0004] The condenser heat dissipation methods of large-volume refrigerators are usually divided into three types: side panel condenser heat dissipation, bottom condenser heat dissipation, and side panel condenser heat dissipation + bottom condenser heat dissipation. For the latter two heat dissipation methods, in autumn and winter, when the user's home is heated, the indoor ambient temperature is usually between 18℃ and 30℃. In order to maintain indoor ventilation, windows need to be opened frequently for ventilation.

[0005] When the windows are open in winter, cold air from outside will enter the room. The cold air sinks and gathers at the bottom of the room, causing the temperature at the bottom of the refrigerator to be much lower than the temperature at the top, and the temperature difference may even be more than 10°C.

[0006] Due to the large temperature difference between the upper and lower environments where the refrigerator is located, the amount of liquid refrigerant entering the evaporator will be reduced, the vaporization heat absorption capacity will be reduced, and the refrigerator will experience poor cooling or no cooling.

[0007] Therefore, it is necessary to study a refrigerator and a refrigeration control method to solve the above problems. Summary of the invention

[0008] The present invention aims to provide a refrigerator with high refrigeration efficiency, high energy saving and high efficiency and easy implementation.

[0009] In order to achieve the above objectives, an embodiment of the present invention provides a refrigerator, comprising a box body, a refrigeration system disposed in the box body, and a compressor compartment is formed at the bottom of the box body;

[0010] The refrigeration system includes a compressor, a condenser, a throttling component, and an evaporator connected in sequence;

[0011] The compressor and the condenser are respectively arranged in the compressor compartment;

[0012] The compressor compartment is also provided with a condensing fan for dissipating heat from the condenser, and the box body is also provided with an air inlet and an air outlet communicating with the inside and outside of the compressor compartment;

[0013] The refrigerator further includes a collection unit, a damper disposed at the air inlet, and a driving mechanism for driving the damper to rotate to open or rotate to close the air inlet;

[0014] The collection unit includes a first temperature sensor disposed on the top of the box body and a second temperature sensor disposed at the air inlet;

[0015] Wherein, the collection unit is electrically connected to the driving mechanism.

[0016] As a further improvement of an embodiment of the present invention, the driving mechanism includes a driving motor for driving the damper to rotate, and a transmission unit connecting an output shaft of the driving motor and the damper;

[0017] The damper includes a plurality of blades arranged at intervals;

[0018] The transmission unit includes a first gear connected to the output shaft, and a plurality of second gears respectively connected to the blades;

[0019] Wherein, a second gear disposed adjacent to the first gear is meshed with the first gear;

[0020] Two adjacent second gears are meshed with each other.

[0021] As a further improvement of an embodiment of the present invention, the box body includes a bottom plate, a first side plate and a second side plate which are arranged opposite to each other;

[0022] The condenser, the condensing fan, and the compressor are sequentially spaced from the first side plate to the second side plate;

[0023] Wherein, the condenser is arranged close to the air inlet, and the compressor is arranged close to the air outlet.

[0024] As a further improvement of an embodiment of the present invention, the air inlet includes a bottom air inlet arranged on the bottom plate and close to the first side plate, and a side air inlet arranged on the first side plate;

[0025] The air outlet comprises a bottom air outlet arranged on the bottom plate and close to the second side plate, and a side air outlet arranged on the second side plate;

[0026] Wherein, the condenser is arranged adjacent to the bottom air inlet, and the compressor is arranged adjacent to the bottom air outlet.

[0027] In order to solve the above problems, the present invention also provides a refrigeration control method which has high refrigeration efficiency, high energy saving and high efficiency and is easy to implement.

[0028] A refrigeration control method for a refrigerator as described above, comprising:

[0029] Obtain a first temperature T1 collected by a first temperature sensor and a second temperature T2 collected by a second temperature sensor, and calculate a temperature difference T0 between T1 and T2, wherein T0=T1-T2;

[0030] After obtaining T0, determine whether T0 satisfies T0≤0;

[0031] When T0 satisfies T0≤0, the opening angle of the damper is set to A1;

[0032] When T0 satisfies T0>0, the opening angle of the damper is set to A0, wherein A0<A1.

[0033] As a further improvement of an embodiment of the present invention, the aforementioned A1 is the maximum value A within the preset opening angle range. 预设-全开 , where A1 is A 预设-全开 , the damper fully opens the air inlet.

[0034] As a further improvement of an embodiment of the present invention, the aforementioned A0=A 预设-全开 -(T0*A 角度系数 );

[0035] A0 is the opening angle of the multi-gear setting, and the minimum value of A0 is 0;

[0036] T0 is rounded to an integer value;

[0037] A 角度系数 Preset adjustment angle for each gear;

[0038] Among them, when A0 is 0, the damper closes the air inlet.

[0039] As a further improvement of an embodiment of the present invention, a time interval t is preset, and the first temperature T1 collected by the first temperature sensor and the second temperature T2 collected by the second temperature sensor are acquired according to the time interval t.

[0040] As a further improvement of an embodiment of the present invention, the aforementioned preset opening angle range is 0 to 90 degrees.

[0041] As a further improvement of one embodiment of the present invention, A 角度系数 is 10°.

[0042] Compared with the prior art, the beneficial effects of the present invention are as follows: the refrigerator and refrigeration control method provided by the present invention obtain the temperature difference between the first temperature collected by the first temperature sensor and the second temperature collected by the second temperature sensor through a first temperature sensor arranged on the top of the box body and a second temperature sensor arranged at the air inlet, so as to control the opening and closing of the damper arranged at the air inlet and the opening angle of the damper when the damper is in the open state, and adjust the air intake volume of the air inlet to adapt to meet the heat dissipation demand of the condenser, thereby improving the vaporization heat absorption capacity of the evaporator, improving the heat exchange efficiency of the evaporator, and then improving the refrigeration efficiency of the refrigeration system, solving the problem of poor refrigeration or no refrigeration in the refrigerator, and having the advantages of high refrigeration efficiency, energy saving and high efficiency, and easy implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the structure of the refrigerator of the present invention;

[0044] Figure 2 It is a schematic diagram of the composition of the refrigeration system of the refrigerator of the present invention;

[0045] Figure 3a It is a schematic diagram of the state when the air door of the refrigerator of the present invention fully opens the air outlet;

[0046] Figure 3b It is a schematic diagram of the state of the air door of the refrigerator of the present invention when the air outlet is half opened;

[0047] Figure 3c It is a schematic diagram of the state when the air door of the refrigerator of the present invention closes the air outlet;

[0048] Figure 4 It is a structural schematic diagram of the driving mechanism of the refrigerator of the present invention;

[0049] Figure 5 The present invention is a flowchart of a refrigerator refrigeration control method.

[0050] In the figure: 1. box body; 11. compressor compartment; 12. bottom plate; 13. first side plate; 14. second side plate; 15. air inlet; 151. bottom air inlet; 152. side air inlet; 16. air outlet; 161. bottom air outlet; 162. side air outlet; 21. compressor; 22. condenser; 23. throttling component; 24. evaporator; 25. condensing fan; 3. damper; 41. first temperature sensor; 42. second temperature sensor; 5. driving mechanism; 51. driving motor; 52. first gear; 53. second gear. DETAILED DESCRIPTION

[0051] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0052] The terms "including" and "having" and any variations thereof in the present invention are intended to cover non-exclusive inclusions. Reference to "embodiments" herein means that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0053] Combination Figure 1 As shown, the present invention mainly relates to: a refrigerator, which includes a box body 1 and a refrigeration system arranged in the box body 1. The refrigerator also includes a storage compartment formed by the box body 1 and a door body for opening or closing the storage compartment.

[0054] Combination Figure 2 As shown, the refrigeration system includes a compressor 21, a condenser 22, a throttling component 23, and an evaporator 24 connected in sequence. The refrigeration system also includes a return air pipe connected to the outlet end of the evaporator 24.

[0055] Among them, the compressor 21, the condenser 22, the throttling component 23, and the evaporator 24 are connected in sequence to form a refrigeration circuit. The refrigerant is compressed by the compressor 21 and enters the condenser 22. After condensing into a gas-liquid two-phase refrigerant, it enters the throttling component 23 for throttling after exiting the condenser 22. The temperature and pressure of the refrigerant are reduced to the required evaporation temperature, and then enter the evaporator 24 to exchange heat with the heat load of the box. The refrigerant at the outlet of the evaporator 24 is in a superheated gas state. At this time, the refrigerant in the superheated gas state enters the return air pipe connected to the outlet of the evaporator 24, and finally returns to the compressor 21, so as to improve the heat exchange efficiency of the evaporator 24, improve the energy efficiency ratio, and improve the refrigeration efficiency.

[0056] Preferably, the throttle component 23 is configured as a capillary tube.

[0057] The bottom of the housing 1 forms a compressor compartment 11. A compressor 21 and a condenser 22 are disposed in the compressor compartment 11, respectively.

[0058] Combination Figure 3a As shown, the compressor compartment 11 is also provided with a condensing fan 25 for dissipating heat to the condenser 22, and the box body 1 is also provided with an air inlet 15 and an air outlet 16 respectively connected to the inside and outside of the compressor compartment 11. It can be understood that the condensing fan 25 can also cool and dissipate heat for other components of the compressor compartment 11, for example, the condensing fan 25 can also cool and dissipate heat for the compressor 21.

[0059] Preferably, the condensing fan 25 is disposed close to the condenser 22, and the wind of the condensing fan 25 forms a heat exchange downstream with the condenser 22, with high heat exchange efficiency.

[0060] The refrigerator further includes a collection unit, a damper 3 disposed at the air inlet 15 , and a driving mechanism 5 for driving the damper 3 to rotate to open or rotate to close the air inlet 15 .

[0061] Reference Figure 1 As shown, the collection unit includes a first temperature sensor 41 arranged on the top of the box 1 and a second temperature sensor 42 arranged at the air inlet 15 .

[0062] The collecting unit is electrically connected to the driving mechanism 5. Specifically, the refrigerator further comprises a control system. The collecting unit and the driving mechanism 5 are electrically connected to the control system respectively, so as to realize the purpose of electrically connecting the collecting unit and the driving mechanism 5.

[0063] Combination Figure 3a , 3b As shown in FIG. 3c, the control system controls the opening and closing of the damper 3 and the opening angle of the damper 3 when the damper 3 is in the open state according to the temperature difference between the first temperature collected by the first temperature sensor 41 and the second temperature collected by the second temperature sensor 42, thereby controlling the opening angle of the air inlet 15 to adjust the air intake volume of the air inlet 15.

[0064] If the temperature difference between the first temperature sensor 41 and the second temperature sensor 42 is too large, the opening angle of the air inlet 15 is controlled by the driving mechanism 5 to reduce the air intake of the air inlet 15, increase the temperature in the compressor compartment 11, prevent the refrigerant from being over-liquefied or completely liquefied in the condenser 22, ensure the refrigerant circulation, and completely enter the evaporator 24 for heat exchange. The problem of poor refrigeration or no refrigeration in the refrigerator is solved to improve the refrigeration efficiency of the refrigerator, which has the advantages of high refrigeration efficiency, energy saving and high efficiency.

[0065] Furthermore, the driving mechanism 5 includes a driving motor 51 for driving the damper 3 to rotate, and a transmission unit connecting the output shaft of the driving motor 51 and the damper 3. The driving motor 51 drives the transmission unit to rotate through the output shaft, and the transmission unit drives the damper 3 to rotate.

[0066] The damper 3 includes a plurality of blades arranged at intervals. The plurality of blades may be arranged at intervals in the vertical direction, or may be arranged at intervals in the horizontal direction.

[0067] Combination Figure 4 As shown, the transmission unit includes a first gear 52 connected to the output shaft and a plurality of second gears 53 respectively connected to the blades. In this embodiment, the first gear 52 is sleeved on the output shaft, and the first gear 52 is coaxially arranged with the output shaft. The blade includes a blade body and a connecting end portion connected to the second gear 53 formed by extending the end portion of the blade body.

[0068] Among them, the second gear 53 disposed adjacent to the first gear 52 is meshed with the first gear 52. At least one of the plurality of second gears 53 is disposed adjacent to the first gear 52. The second gear 53 adjacent to the first gear 52 is meshed with the first gear 52. The two adjacent second gears 53 are meshed with each other. The output shaft drives the first gear 52 to rotate, and the first gear 52 drives the second gear 53 to rotate, so that the damper 3 rotates to open or close. It has the advantages of compact structure and easy implementation.

[0069] Combination Figure 3a As shown, further, the box body 1 includes a bottom plate 12, a first side plate 13 and a second side plate 14 that are arranged oppositely. The first side plate 13 and the second side plate 14 are arranged oppositely in the left-right direction. The bottom plate 12, the first side plate 13, and the second side plate 14 together define the compressor compartment 11. The door body is arranged at the front side of the box body 1.

[0070] The condenser 22, the condensing fan 25, and the compressor 21 are sequentially spaced apart from each other in a direction from the first side plate 13 to the second side plate 14. In this embodiment, the condenser 22, the condensing fan 25, and the compressor 21 are fixed on the bottom plate 12, respectively.

[0071] The condenser 22 is arranged near the air inlet 15, and the compressor 21 is arranged near the air outlet 16. When the condensing fan 25 is running, the air outside the compressor compartment 11 enters the compressor compartment 11 through the air inlet 15 driven by the condensing fan 25, first cools the condenser 22, then cools the compressor 21, and finally is discharged from the compressor compartment 11 through the air outlet 16, so as to improve the heat dissipation effect in the compressor compartment 11.

[0072] Furthermore, the air inlet 15 includes a bottom air inlet 151 disposed on the bottom plate 12 and close to the first side plate 13, and a side air inlet 152 disposed on the first side plate 13. When the condensing fan 25 is running, the air outside the compressor compartment 11 enters the compressor compartment 11 through the bottom air inlet 151 and the side air inlet 152 respectively under the drive of the condensing fan 25, so as to improve the air flow effect in the compressor compartment 11.

[0073] A damper 3 is provided at the bottom air inlet 151, and another damper 3 is provided at the side air inlet 152. The multiple blades of the damper 3 at the bottom air inlet 151 are arranged at intervals in the horizontal direction, and the multiple blades of the damper 3 at the side air inlet 152 are arranged at intervals in the vertical direction. The drive motor 51 is provided at the end of the bottom plate 12.

[0074] The air outlet 16 includes a bottom air outlet 161 disposed on the bottom plate 12 and close to the second side plate 14, and a side air outlet 162 disposed on the second side plate 14. Driven by the condensing fan 25, the air outside the compressor compartment 11 enters the compressor compartment 11 through the bottom air inlet 151 and the side air inlet 152, respectively, and then cools the condenser 22 and the compressor 21 in turn, and finally is discharged through the bottom air outlet 161 and the side air outlet 162, so that the air can fully contact the condenser 22 and the compressor 21, increase the contact area, and enhance the heat dissipation effect.

[0075] Among them, the condenser 22 is arranged adjacent to the bottom air inlet 151, and the compressor 21 is arranged adjacent to the bottom air outlet 161. This is to optimize the design of the heat dissipation air path of the compressor compartment 11. The air entering the bottom air inlet 151 cools the condenser 22 from bottom to top, and the air from the side air inlet 152 cools the condenser 22 head-on to improve the heat dissipation effect of the condenser 22. Similarly, the air in the compressor compartment 11 needs to be discharged through the bottom air outlet 161 and the side air outlet 162, so the contact area with the compressor 21 will also be increased to improve the heat dissipation effect.

[0076] Combination Figure 5 As shown, in order to solve the above problems, the present invention also provides a refrigeration control method with high refrigeration efficiency, energy saving and high efficiency, and easy implementation.

[0077] A refrigeration control method for a refrigerator as described above, comprising:

[0078] Obtain a first temperature T1 acquired by the first temperature sensor 41 and a second temperature T2 acquired by the second temperature sensor 42, and calculate a temperature difference T0 between T1 and T2, wherein T0=T1-T2;

[0079] After obtaining T0, determine whether T0 satisfies T0≤0;

[0080] When T0 satisfies T0≤0, the opening angle of damper 3 is set to A1;

[0081] When T0 satisfies T0>0, the opening angle of the damper 3 is set to A0, wherein A0<A1.

[0082] Specifically, when T0≤0, that is, T1≤T2, the control system of the refrigerator controls the condensing fan 25 to work according to the first temperature T1 collected by the first temperature sensor 41 on the top of the box body 1, which is lower than the second temperature T2 at the air inlet 15 of the compressor compartment 11. At this time, the temperature actually obtained by the condensing fan 25 is relatively high, so that the gaseous refrigerant entering the capillary tube increases, and the gas-liquid two-phase refrigerant entering the capillary tube is relatively large, which will increase the vaporization heat absorption capacity of the evaporator 24. Therefore, the air inlet area of ​​the air inlet 15 needs to be increased at this time.

[0083] When T0>0, that is, T1>T2, the temperature actually obtained by the condensing fan 25 is relatively low, so that the gaseous refrigerant entering the capillary tube is reduced, and the gas-liquid two-phase refrigerant entering the capillary tube is relatively small, which will reduce the vaporization heat absorption capacity of the evaporator 24. At this time, it is necessary to reduce the air inlet area of ​​the air inlet 15 to increase the vaporization rate of the refrigerant in the evaporator 24, thereby improving the refrigeration efficiency of the refrigerator to solve the problem of poor refrigeration or no refrigeration in the refrigerator. Therefore, A0<A1.

[0084] Combination Figure 3a As shown, further, the aforementioned A1 is the maximum value A within the preset opening angle range. 预设-全开 , where A1 is A 预设-全开 When , the damper 3 fully opens the air inlet 15.

[0085] Specifically, as shown above, when T0≤0, the temperature actually obtained by the condensing fan 25 is relatively high, so that the amount of gaseous refrigerant entering the capillary tube increases, and the amount of gas-liquid two-phase refrigerant entering the capillary tube is relatively large, which will increase the vaporization heat absorption capacity of the evaporator 24. It is necessary to maximize the air inlet area of ​​the air inlet 15 to maximize the cooling effect of the condensing fan 25. Therefore, A1 is set to A 预设-全开 When , the damper 3 fully opens the air inlet 15.

[0086] Preferably, the aforementioned A0 is inversely proportional to T0. The larger T0 is, the greater the temperature difference between the first temperature T1 and the second temperature T2 is, and the lower the temperature actually obtained by the condensing fan 25 is, so that less refrigerant in the gaseous state enters the capillary tube, and therefore A0 is smaller.

[0087] Combination Figure 3b , 3c As shown, further, the aforementioned A0=A 预设-全开 -(T0*A 角度系数 );

[0088] A0 is the opening angle of the multi-gear setting, and the minimum value of A0 is 0;

[0089] T0 is rounded to an integer value;

[0090] A 角度系数 Preset adjustment angle for each gear;

[0091] When A0 is 0, the damper 3 closes the air inlet 15 .

[0092] Specifically, T1>T2, at this time, the temperature actually obtained by the condensing fan 25 is relatively low, so that the refrigerant in the gas state entering the capillary tube is reduced. The larger T0 is, when T1 is a certain value, the smaller T2 is, indicating that the temperature actually obtained by the condensing fan 25 is lower. Therefore, the opening angle of the damper 3 is smaller, and the air inlet area of ​​the air inlet 15 is reduced. In this scheme, 预设-全开 Subtract T0*A from 角度系数 In order to obtain A0, the vaporization rate of the refrigerant in the evaporator 24 is increased, thereby improving the refrigeration efficiency of the refrigerator to solve the problem of poor refrigeration or no refrigeration in the refrigerator. The implementation of this technical solution does not require any changes to the original refrigerator structure. It only requires the addition of a damper 3 and a drive mechanism 5 at the air inlet 15. It has the advantages of easy implementation, easy control and low manufacturing cost.

[0093] Furthermore, a time interval t is preset, and the first temperature T1 collected by the first temperature sensor 41 and the second temperature T2 collected by the second temperature sensor 42 are acquired according to the time interval t.

[0094] By acquiring T1 and T2 at every time interval t, the service life of the driving mechanism 5 and the damper 3 is increased.

[0095] Furthermore, the preset opening angle range is 0 to 90 degrees. 预设-全开 When the opening angle is 90°, the damper 3 fully opens the air inlet 15. When the opening angle is 0, the damper 3 closes the air inlet 15.

[0096] Furthermore, A 角度系数 is 10°.

[0097] Specifically, A 角度系数 When the angle between the air intake and the air outlet is 10° and T0≥9 and A0 is 0, the damper 3 closes the air inlet 15.

[0098] The present invention can be applied to other refrigeration equipment, such as upright refrigerators.

[0099] Compared with the prior art, the refrigerator and refrigeration control method provided by the present invention obtain the temperature difference between the first temperature collected by the first temperature sensor 41 and the second temperature collected by the second temperature sensor 42 through a first temperature sensor 41 arranged on the top of the box body 1 and a second temperature sensor 42 arranged at the air inlet 15, so as to control the opening and closing of the damper 3 arranged at the air inlet and the opening angle of the damper 3 when the damper 3 is in the open state, and adjust the air intake of the air inlet 15 to adapt to meet the heat dissipation demand of the condenser 22, thereby improving the vaporization heat absorption capacity of the evaporator 24, improving the heat exchange efficiency of the evaporator 24, and then improving the refrigeration efficiency of the refrigeration system, solving the problem of poor refrigeration or no refrigeration in the refrigerator, and having the advantages of high refrigeration efficiency, energy saving and high efficiency, and easy implementation.

[0100] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance unless otherwise clearly specified and limited; the terms "installed", "connected", "connected" and the like should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A refrigerator, comprising a box body and a refrigeration system arranged in the box body, wherein the bottom of the box body forms a compressor compartment; The refrigeration system includes a compressor, a condenser, a throttling component, and an evaporator connected in sequence; The compressor and the condenser are respectively arranged in the compressor compartment; The compressor compartment is also provided with a condensing fan for dissipating heat from the condenser, and the box body is also provided with an air inlet and an air outlet communicating with the inside and outside of the compressor compartment; It is characterized in that The refrigerator further includes a collection unit, a damper disposed at the air inlet, and a driving mechanism for driving the damper to rotate to open or rotate to close the air inlet; The collection unit includes a first temperature sensor disposed on the top of the box body and a second temperature sensor disposed at the air inlet; Wherein, the collection unit is electrically connected to the driving mechanism.

2. The refrigerator according to claim 1, characterized in that: The driving mechanism includes a driving motor for driving the damper to rotate, and a transmission unit connecting an output shaft of the driving motor and the damper; The damper includes a plurality of blades arranged at intervals; The transmission unit includes a first gear connected to the output shaft, and a plurality of second gears respectively connected to the blades; Wherein, a second gear disposed adjacent to the first gear is meshed with the first gear; Two adjacent second gears are meshed with each other.

3. The refrigerator according to claim 1, characterized in that: The box body comprises a bottom plate, a first side plate and a second side plate which are arranged opposite to each other; The condenser, the condensing fan, and the compressor are sequentially spaced from the first side plate to the second side plate; Wherein, the condenser is arranged close to the air inlet, and the compressor is arranged close to the air outlet.

4. The refrigerator according to claim 3, characterized in that: The air inlet comprises a bottom air inlet arranged on the bottom plate and close to the first side plate, and a side air inlet arranged on the first side plate; The air outlet comprises a bottom air outlet arranged on the bottom plate and close to the second side plate, and a side air outlet arranged on the second side plate; Wherein, the condenser is arranged adjacent to the bottom air inlet, and the compressor is arranged adjacent to the bottom air outlet.

5. A refrigerator refrigeration control method according to any one of claims 1 to 4, characterized in that: Obtain a first temperature T1 collected by a first temperature sensor and a second temperature T2 collected by a second temperature sensor, and calculate a temperature difference T0 between T1 and T2, wherein T0=T1-T2; After obtaining T0, determine whether T0 satisfies T0≤0; When T0 satisfies T0≤0, the opening angle of the damper is set to A1; When T0 satisfies T0>0, the opening angle of the damper is set to A0, wherein A0<A1.

6. The refrigeration control method according to claim 5, characterized in that: The aforementioned A1 is the maximum value A within the preset opening angle range. 预设-全开 , where A1 is A 预设-全开 , the damper fully opens the air inlet.

7. The refrigeration control method according to claim 5, characterized in that: include, A0=A 预设-全开 -(T0*A 角度系数 ); A0 is the opening angle of the multi-gear setting, and the minimum value of A0 is 0; T0 is rounded to an integer value; A 角度系数 Preset adjustment angle for each gear; Among them, when A0 is 0, the damper closes the air inlet.

8. The refrigeration control method according to claim 5, characterized in that: A time interval t is preset, and a first temperature T1 collected by the first temperature sensor and a second temperature T2 collected by the second temperature sensor are acquired according to the time interval t.

9. The refrigeration control method according to claim 5, characterized in that: The aforementioned preset opening angle range is 0 to 90 degrees.

10. The refrigeration control method according to claim 9, characterized in that: A 角度系数 is 10°.

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