Refrigerator and control method for refrigerator
By using a structure that combines semiconductor components and magnetically permeable components in the refrigerator, the problem of temperature unevenness caused by the small heat exchange area of the semiconductor refrigeration sheet is solved, and more uniform temperature control and better food storage effect are achieved.
Patent Information
- Application Number
- CN202311415573.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-30
- Publication Date
- 2025-05-02
AI Technical Summary
In existing refrigerators, the heat exchange area of semiconductor refrigeration sheets is small, resulting in the temperature in the drawer being not uniform enough, affecting the fresh storage of ingredients.
A refrigerator is designed, adopting a structure that combines semiconductor elements and magnetic conduction components. The cold end of the semiconductor element is arranged in the heat exchange air duct or in the refrigeration room, and the hot end is arranged in the heat exchange air duct. The magnetic conduction component corresponds to the semiconductor element to perform heat exchange, and a magnetic field is generated through the coil assembly to assist in refrigeration.
By increasing the heat exchange area and using magnetic fields to assist refrigeration, the temperature in the refrigeration room is achieved more uniform, and the fresh storage time of food is extended.
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Figure CN119915025A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a refrigerator and a control method for the refrigerator. Background Art
[0002] At present, the variable temperature space in the refrigerator's cold storage room generally uses a refrigeration evaporator or a freezing evaporator to directly supply air to the drawer for cooling. Due to the low temperature of the evaporator, the temperature in the variable temperature room fluctuates greatly, and large temperature fluctuations are not conducive to the fresh storage of food.
[0003] Related art discloses a refrigerator and a control method of the refrigerator. The refrigerator comprises: a box body having a refrigerating chamber; a drawer, which is pullable and arranged in the refrigerating chamber; a semiconductor component, including a semiconductor refrigerating sheet, which has a cold end face and a hot end face, the cold end face is arranged adjacent to the drawer or located in the drawer, and the hot end face is arranged away from the drawer; a control component, which is electrically connected to the semiconductor refrigerating sheet to control the on and off of the semiconductor refrigerating sheet. The refrigerator can achieve a constant temperature effect in the drawer to a certain extent, facilitates the storage of food in the drawer, and avoids the deterioration of food caused by excessive temperature changes in the drawer.
[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:
[0005] The refrigerator in the related art cools the drawer of the refrigerator compartment through a semiconductor refrigeration sheet, achieving a constant temperature effect in the drawer to a certain extent. However, due to the small area of the semiconductor refrigeration sheet and the small heat exchange area between the semiconductor refrigeration sheet and the drawer, the cold energy generated by the cold end surface of the semiconductor refrigeration sheet cannot be evenly provided to the drawer, so that the temperature in the drawer is still not uniform.
[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention
[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.
[0008] The embodiments of the present disclosure provide a refrigerator and a control method for the refrigerator, so as to improve the temperature uniformity in the refrigeration compartment of the refrigerator, thereby facilitating the fresh storage of food.
[0009] According to a first aspect of an embodiment of the present invention, a refrigerator is provided, comprising: a cabinet, provided with a refrigeration compartment and defining a heat exchange air duct located outside the refrigeration compartment; a semiconductor element, comprising a cold end and a hot end, the cold end being arranged in the heat exchange air duct or in the refrigeration compartment, the hot end being arranged in the heat exchange air duct, and the distance between the cold end and the refrigeration compartment is smaller than the distance between the hot end and the refrigeration compartment; a magnetic conductive component, corresponding to the semiconductor element, for exchanging heat with the cold end and / or the hot end of the semiconductor element; a coil component, sleeved on the outside of the magnetic conductive component, for generating a magnetic field; and a first controller, connected to both the semiconductor element and the coil component, for controlling the on and off of the semiconductor element and the coil component.
[0010] Optionally, the magnetic conductive component includes: a first magnetic conductive block, corresponding to the cold end of the semiconductor element, and used for heat exchange with the cold end; a second magnetic conductive block, corresponding to the cold end of the semiconductor element, and used for heat exchange with the cold end, and arranged opposite to the first magnetic conductive block; a third magnetic conductive block, corresponding to the hot end of the semiconductor element and located in the heat exchange air duct, and used for heat exchange with the hot end.
[0011] Optionally, the coil assembly includes: a first coil, which is sleeved on the outside of the first magnetic conductive block; and a second coil, which is sleeved on the outside of the second magnetic conductive block.
[0012] Optionally, the first magnetic conductive block includes a first section and a second section, the first section is arranged on the top wall of the refrigeration compartment, the second section is arranged on the rear wall of the refrigeration compartment, and the first coil is sleeved on the outside of the second section; the second magnetic conductive block includes a third section and a fourth section, the third section is arranged on the bottom wall of the refrigeration compartment, the fourth section is arranged on the rear wall of the refrigeration compartment, and the second coil is sleeved on the outside of the fourth section.
[0013] Optionally, the cabinet also defines a main air duct, the heat exchange air duct is connected in parallel with part of the air duct section of the main air duct, and the refrigerator also includes an evaporator and a fan, and the evaporator and the fan are both arranged in the main air duct; the refrigerator also includes: a damper, arranged between the entrance of the heat exchange air duct and the main air duct, for controlling the connection between the entrance of the heat exchange air duct and the main air duct; a second controller, connected to the damper, for controlling the opening and closing of the damper.
[0014] According to a second aspect of an embodiment of the present invention, a control method for a refrigerator is provided, comprising: obtaining a first current temperature of a refrigeration compartment; when the difference between the first current temperature and a target temperature is greater than or equal to a first threshold, controlling a semiconductor element to be powered on; when the difference between the first current temperature and the target temperature is less than the first threshold, controlling a coil component to be powered on by direct current.
[0015] Optionally, when the difference between the first current temperature and the target temperature is less than a first threshold, the coil assembly is controlled to pass direct current, including: when the difference between the first current temperature and the target temperature is greater than a second threshold and less than the first threshold, one of the first coil and the second coil is controlled to pass direct current; when the difference between the first current temperature and the target temperature is less than or equal to the second threshold, both the first coil and the second coil are controlled to pass direct current, and the current directions in the first coil and the second coil are opposite, wherein the second threshold is less than the first threshold.
[0016] Optionally, the control method for a refrigerator further includes: when the difference between the first current temperature and the target temperature is less than or equal to a second threshold, obtaining the current temperature of the third magnetic block and obtaining the second current temperature of the refrigeration compartment; when the difference between the current temperature of the third magnetic block and the second current temperature is less than or equal to a third threshold, controlling the fan and the damper to open; when the difference between the current temperature of the third magnetic block and the second current temperature is greater than the third threshold, controlling the coil assembly to pass alternating current.
[0017] Optionally, when the difference between the current temperature of the third magnetic block and the second current temperature is greater than a third threshold, the coil assembly is controlled to pass alternating current, including: when the difference between the current temperature of the third magnetic block and the second current temperature is greater than the third threshold, controlling both the first coil and the second coil to pass alternating current; obtaining the third current temperature of the refrigeration compartment; when the difference between the third current temperature and the target temperature is greater than or equal to a fourth threshold, controlling one of the first coil and the second coil to be powered off, wherein the fourth threshold is greater than the second threshold.
[0018] Optionally, when the difference between the third current temperature and the target temperature is greater than or equal to a fourth threshold, after controlling one of the first coil and the second coil to be powered off, the control method further includes: obtaining a fourth current temperature of the refrigeration compartment; when the difference between the fourth current temperature and the target temperature is greater than or equal to a fifth threshold, controlling both the first coil and the second coil to be powered off or at least one of them to be supplied with direct current, wherein the fourth threshold is less than the fifth threshold.
[0019] The refrigerator and the control method for the refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:
[0020] After food is placed in the refrigeration compartment of the box, the first controller controls the semiconductor element to be energized, and the cold end of the semiconductor element generates cold energy to cool the refrigeration compartment. The magnetic conductive component can transfer the cold energy generated by the semiconductor element to the refrigeration compartment over a larger area, making the temperature in the refrigeration compartment more uniform and convenient for food storage. The first controller controls the coil component to generate a magnetic field after passing direct current, and the magnetic conductive component conducts the magnetic field to the refrigeration compartment, which has the effect of inhibiting bacteria and preserving the food. The first controller controls the coil component to generate an alternating magnetic field after passing alternating current, and the alternating magnetic field acts on the magnetic conductive component, which generates eddy current heat to melt the frost on the magnetic conductive component.
[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:
[0023] Figure 1 is a schematic cross-sectional structure diagram of a refrigerator provided by an embodiment of the present disclosure;
[0024] Figure 2a is a schematic structural diagram of a first magnetic conductive block or a second magnetic conductive block provided in an embodiment of the present disclosure;
[0025] Figure 2b is a schematic structural diagram of a third magnetic conductive block provided in an embodiment of the present disclosure;
[0026] Figure 3 is a schematic diagram of magnetic force line distribution when direct current is passed through the first coil and the second coil provided by the embodiment of the present disclosure, wherein the direction of the arrow is the direction of the magnetic field;
[0027] Figure 4 Schematic diagram of air supply when the fan and damper are opened according to an embodiment of the present disclosure, wherein the direction of the arrow is the direction of air flow;
[0028] Figure 5 is a flow chart of a control method for a refrigerator provided by an embodiment of the present disclosure;
[0029] Figure 6 is a flow chart of another control method for a refrigerator provided by an embodiment of the present disclosure;
[0030] Figure 7 is a flow chart of another control method for a refrigerator provided by an embodiment of the present disclosure;
[0031] Figure 8 is a flow chart of another control method for a refrigerator provided by an embodiment of the present disclosure;
[0032] Fig. 9 is a flow chart of another control method for a refrigerator provided by an embodiment of the present disclosure;
[0033] Fig.10 This is a flow chart of another control method for a refrigerator provided by an embodiment of the present disclosure.
[0034] Reference numerals:
[0035] 1: box; 11: refrigeration room; 12: heat exchange air duct; 13: main air duct; 14: evaporator; 15: fan; 16: damper;
[0036] 2: semiconductor element; 21: cold end; 22: hot end;
[0037] 3: magnetic conductive component; 31: first magnetic conductive block; 311: first section; 312: second section; 32: second magnetic conductive block; 321: third section; 322: fourth section; 33: third magnetic conductive block; 34: main board; 35: rib plate;
[0038] 4: coil assembly; 41: first coil; 42: second coil;
[0039] 5: first temperature sensor;
[0040] 6: Second temperature sensor. DETAILED DESCRIPTION
[0041] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.
[0042] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate for the disclosed embodiments described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0043] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0044] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0045] Unless otherwise stated, the term "plurality" means two or more.
[0046] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.
[0047] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.
[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
[0049] Combination Figure 1-4 As shown, an embodiment of the present disclosure provides a refrigerator, including a body 1, a semiconductor element 2, a magnetic conductive component 3, a coil component 4 and a first controller.
[0050] like Figure 1 As shown, the box body 1 is provided with a refrigeration chamber 11, and defines a heat exchange air duct 12 located outside the refrigeration chamber 11; the semiconductor element 2 includes a cold end 21 and a hot end 22, the cold end 21 is arranged in the heat exchange air duct 12 or in the refrigeration chamber 11, and the hot end 22 is arranged in the heat exchange air duct 12, and the distance between the cold end 21 and the refrigeration chamber 11 is smaller than the distance between the hot end 22 and the refrigeration chamber 11; the magnetic conductive component 3 corresponds to the semiconductor element 2 to exchange heat with the cold end 21 and / or the hot end 22 of the semiconductor element 2; the coil component 4 is sleeved on the outside of the magnetic conductive component 3 to generate a magnetic field; the first controller is connected to both the semiconductor element 2 and the coil component 4 to control the on and off of the semiconductor element 2 and the coil component 4.
[0051] In the refrigerator provided by the embodiment of the present disclosure, after food is placed in the refrigeration chamber 11 of the box body 1, the first controller controls the semiconductor element 2 to be energized, and the cold end 21 of the semiconductor element 2 generates cold energy to cool the refrigeration chamber 11. The magnetic conductive component 3 can transfer the cold energy generated by the semiconductor element 2 to the refrigeration chamber 11 over a larger area, so that the temperature in the refrigeration chamber 11 is more uniform, which is convenient for food storage. The first controller controls the coil component 4 to generate a magnetic field after passing direct current, and the magnetic conductive component 3 conducts the magnetic field to the refrigeration chamber 11, which has the effect of inhibiting bacteria and preserving the food. The first controller controls the coil component 4 to generate an alternating magnetic field after passing alternating current, and the alternating magnetic field acts on the magnetic conductive component 3, and the magnetic conductive component 3 generates eddy current heat to melt the frost on the magnetic conductive component 3.
[0052] When the cold end 21 is arranged in the heat exchange air duct 12, the distance between the cold end 21 and the refrigeration compartment 11 is smaller than the distance between the hot end 22 and the refrigeration compartment 11, that is, compared with the hot end 22, the cold end 21 is arranged closer to the refrigeration compartment 11; when the cold end 21 is arranged in the refrigeration compartment 11, the distance between the cold end 21 and the refrigeration compartment 11 is zero, the hot end 22 is located in the heat exchange air duct 12, and the distance between the hot end 22 and the refrigeration compartment 11 is greater than zero, which still satisfies the requirement that the distance between the cold end 21 and the refrigeration compartment 11 is smaller than the distance between the hot end 22 and the refrigeration compartment 11.
[0053] Alternatively, if Figure 1 As shown, the magnetic conductive component 3 includes a first magnetic conductive block 31, a second magnetic conductive block 32 and a third magnetic conductive block 33. The first magnetic conductive block 31 corresponds to the cold end 21 of the semiconductor element 2, and is used for heat exchange with the cold end 21; the second magnetic conductive block 32 corresponds to the cold end 21 of the semiconductor element 2, and is used for heat exchange with the cold end 21, and is arranged opposite to the first magnetic conductive block 31; the third magnetic conductive block 33 corresponds to the hot end 22 of the semiconductor element 2 and is located in the heat exchange air duct 12, and is used for heat exchange with the hot end 22.
[0054] The first magnetic conductive block 31 and the second magnetic conductive block 32 deliver the cold generated by the cold end 21 of the semiconductor element 2 to the refrigeration chamber 11 over a larger area, making the temperature distribution in the refrigeration chamber 11 more uniform, which is more conducive to the fresh storage of food. The third magnetic conductive block 33 delivers the heat generated by the hot end 22 of the semiconductor element 2 out of the semiconductor element 2 over a larger area, so that the temperature of the hot end 22 can drop faster, which is more conducive to the operation of the cold end 21.
[0055] like Figure 2a-2b As shown, the first magnetic conductive block 31, the second magnetic conductive block 32 and the third magnetic conductive block 33 all include a main board 34 and a rib plate 35, and the rib plate 35 is used to increase the heat exchange area. In this way, the diffusion area of the first magnetic conductive block 31 and the second magnetic conductive block 32 to diffuse the cold is larger, and the temperature distribution of the refrigeration compartment 11 is more uniform. The diffusion area of the third magnetic conductive block 33 to diffuse the heat is also larger, so that the temperature of the hot end 22 drops faster.
[0056] Alternatively, if Figure 1 As shown, the coil assembly 4 includes a first coil 41 and a second coil 42 . The first coil 41 is sleeved on the outside of the first magnetic conductive block 31 ; the second coil 42 is sleeved on the outside of the second magnetic conductive block 32 .
[0057] The first controller controls the first coil 41 or the second coil 42 to pass direct current, generating a relatively low-intensity constant magnetic field, which has a certain antibacterial effect on the food in the refrigeration compartment 11. The first controller controls the first coil 41 and the second coil 42 to pass direct current at the same time, and the current directions passed by the first coil 41 and the second coil 42 are opposite, generating a relatively high-intensity constant magnetic field, which has a better antibacterial effect on the food in the refrigeration compartment 11. The magnetic field line distribution diagram when direct current is passed by the first coil 41 and the second coil 42 at the same time and the current directions are opposite is as follows: Figure 3 shown.
[0058] The first controller controls the first coil 41 or the second coil 42 to pass alternating current, generating a relatively low intensity alternating magnetic field, and the magnetic conductive component 3 generates a certain amount of eddy current heat to melt the frost on the magnetic conductive component 3. The first controller controls the first coil 41 and the second coil 42 to pass alternating current at the same time, generating a relatively high intensity alternating magnetic field, and the magnetic conductive component 3 generates a relatively large amount of eddy current heat to defrost the magnetic conductive component 3 more quickly.
[0059] Alternatively, if Figure 3 As shown, the first magnetic conductive block 31 includes a first section 311 and a second section 312, the first section 311 is arranged on the top wall of the refrigeration compartment 11, the second section 312 is arranged on the rear wall of the refrigeration compartment 11, and the first coil 41 is sleeved on the outer side of the second section 312; the second magnetic conductive block 32 includes a third section 321 and a fourth section 322, the third section 321 is arranged on the bottom wall of the refrigeration compartment 11, the fourth section 322 is arranged on the rear wall of the refrigeration compartment 11, and the second coil 42 is sleeved on the outer side of the fourth section 322.
[0060] The first coil 41 is sleeved on the second section 312 of the rear wall of the refrigeration chamber 11, and a magnetic field from the hot end 22 to the cold end 21 is generated after a direct current is passed through it. The second coil 42 is sleeved on the fourth section 322 of the rear wall of the refrigeration chamber 11, and a magnetic field from the cold end 21 to the hot end 22 is generated after a direct current is passed through it. Therefore, a magnetic field from the top wall of the refrigeration chamber 11 to the bottom wall is generated inside the refrigeration chamber 11, and finally a magnetic field is formed as follows: Figure 3 The magnetic field line distribution diagram is shown.
[0061] Alternatively, if Figure 4As shown, the housing 1 further defines a main air duct 13, the heat exchange air duct 12 is connected in parallel with a partial air duct section of the main air duct 13, the refrigerator further includes an evaporator 14 and a fan 15, the evaporator 14 and the fan 15 are both arranged in the main air duct 13; the refrigerator further includes a damper 16 and a second controller, the damper 16 is arranged between the entrance of the heat exchange air duct 12 and the main air duct 13, and is used to control the connection between the entrance of the heat exchange air duct 12 and the main air duct 13; the second controller is connected to the damper 16, and is used to control the opening and closing of the damper 16.
[0062] When the second controller controls the damper 16 to open, the air supply diagram inside the box 1 is as follows: Figure 4 As shown by the middle arrow, the cold energy generated by the evaporator 14 is blown into the heat exchange air duct 12 by the fan 15 through the damper 16, contacts the third magnetic conductive block 33, exchanges heat with the third magnetic conductive block 33, and the third magnetic conductive block 33 further cools the hot end 22 of the semiconductor element 2, so that the cold end 21 can provide cold energy for the refrigeration compartment 11 more stably. When the second controller controls the damper 16 to be closed, the cold energy generated by the evaporator 14 stops entering the heat exchange air duct 12.
[0063] Optionally, the refrigerator further includes a first temperature sensor 5 and a second temperature sensor 6, wherein the first temperature sensor 5 is disposed in the refrigeration compartment 11 for detecting the temperature in the refrigeration compartment 11, and the second temperature sensor 6 is disposed in the third magnetic conductive block 33 for detecting the temperature of the third magnetic conductive block 33.
[0064] Combination Figure 5 As shown, the embodiment of the present disclosure provides a control method for a refrigerator, comprising:
[0065] S501, obtaining a first current temperature of the refrigeration compartment;
[0066] S502, when the difference between the first current temperature and the target temperature is greater than or equal to a first threshold, controlling the semiconductor element to be powered on;
[0067] S503, when the difference between the first current temperature and the target temperature is less than a first threshold, the coil assembly is controlled to pass direct current.
[0068] The control method for a refrigerator provided by the embodiment of the present disclosure is adopted to control the power on and off of the semiconductor element and the coil assembly by judging the relationship between the difference between the first current temperature in the refrigeration room and the target temperature and the first threshold. In a specific embodiment, the first threshold is taken as 3°C as an example. When the difference is greater than or equal to 3°C, it means that the temperature in the refrigeration room is not close to the target temperature. The semiconductor element is controlled to be powered on, the fan and the damper are turned on, and the cold end generates cold to cool the refrigeration room, so that the temperature in the refrigeration room is close to the target temperature. When the difference is less than 3°C, it means that the temperature in the refrigeration room is gradually approaching the target temperature. The coil assembly is controlled to pass direct current to generate a magnetic field of a certain strength, which has an antibacterial and fresh-keeping effect on the food stored in the refrigeration room.
[0069] Optionally, in step S503, when the difference between the first current temperature and the target temperature is less than a first threshold, controlling the coil assembly to pass direct current includes:
[0070] When the difference between the first current temperature and the target temperature is greater than the second threshold value and less than the first threshold value, controlling one of the first coil and the second coil to pass direct current;
[0071] When the difference between the first current temperature and the target temperature is less than or equal to a second threshold, the first coil and the second coil are controlled to pass direct current, and the current directions in the first coil and the second coil are opposite, wherein the second threshold is less than the first threshold.
[0072] When the difference between the first current temperature and the target temperature is less than the first threshold, a second threshold less than the first threshold is selected as the judgment standard, which can more accurately judge whether the temperature in the refrigeration room is close to the target temperature, thereby controlling the number of energized coils of the coil assembly. When the difference is greater than the second threshold and less than the first threshold, it means that the temperature in the refrigeration room is gradually approaching the target temperature, and the first coil or the second coil is controlled to pass direct current to generate a magnetic field of a certain intensity, which has an antibacterial and fresh-keeping effect on the food stored in the refrigeration room. When the difference is less than the first threshold, it means that the temperature in the refrigeration room is closer to the target temperature, and the first coil and the second coil are controlled to pass direct current to generate a constant magnetic field of higher intensity, which has a better antibacterial and fresh-keeping effect on the food in the refrigeration room. When the current directions in the first coil and the second coil are opposite, the first coil is sleeved on the second section of the first magnetic conductive block on the rear wall of the refrigeration compartment, and a magnetic field from the hot end toward the cold end is generated after direct current is passed through, and the second coil is sleeved on the fourth section of the second magnetic conductive block on the rear wall of the refrigeration compartment, and a magnetic field from the cold end toward the hot end is generated after direct current is passed through. Therefore, a magnetic field from the top wall of the refrigeration compartment toward the bottom wall is generated inside the refrigeration compartment, which has a better antibacterial and fresh-keeping effect on the food in the refrigeration compartment.
[0073] Combination Figure 6 As shown, the embodiment of the present disclosure provides another control method for a refrigerator, comprising:
[0074] S601, obtaining a first current temperature of the refrigeration compartment;
[0075] S602, when the difference between the first current temperature and the target temperature is greater than or equal to a first threshold, controlling the semiconductor element to be powered on;
[0076] S603, when the difference between the first current temperature and the target temperature is greater than the second threshold value and less than the first threshold value, controlling one of the first coil and the second coil to pass direct current;
[0077] S604, when the difference between the first current temperature and the target temperature is less than or equal to a second threshold, control the first coil and the second coil to pass direct current, and the current directions in the first coil and the second coil are opposite, wherein the second threshold is less than the first threshold.
[0078] In the disclosed embodiment, firstly, the relationship between the difference between the first current temperature and the target temperature and the first threshold is judged to control the power on and off of the semiconductor element and the coil assembly. Secondly, when the difference between the first current temperature and the target temperature is less than the first threshold, the second threshold less than the first threshold is selected as the judgment standard, which can more accurately judge whether the temperature in the refrigeration room is close to the target temperature, so as to control the number of energized coils of the coil assembly. In a specific embodiment, the second threshold is 1°C as an example. When the difference is greater than 1°C and less than 3°C, it means that the temperature in the refrigeration room is gradually approaching the target temperature, and the first coil or the second coil is controlled to pass direct current to generate a magnetic field of a certain strength, which has an antibacterial and fresh-keeping effect on the food stored in the refrigeration room. When the difference is less than 1°C, it means that the temperature in the refrigeration room is closer to the target temperature, and the first coil and the second coil are controlled to pass direct current to generate a constant magnetic field of higher intensity, which has a better antibacterial and fresh-keeping effect on the food in the refrigeration room.
[0079] Optionally, the control method for the refrigerator further includes:
[0080] When the difference between the first current temperature and the target temperature is less than or equal to the second threshold, obtaining the current temperature of the third magnetic conductive block and obtaining the second current temperature of the refrigeration compartment;
[0081] When the difference between the current temperature of the third magnetic conductive block and the second current temperature is less than or equal to a third threshold, the fan and the damper are controlled to open;
[0082] When the difference between the current temperature of the third magnetic conductive block and the third current temperature is greater than the third threshold, the coil assembly is controlled to pass alternating current.
[0083] By judging the relationship between the difference between the current temperature of the third magnetic block and the third current temperature and the third threshold, the frosting condition of the third magnetic block is inferred. When the difference between the current temperature of the third magnetic block and the third current temperature is less than or equal to the third threshold, it means that the third magnetic block is basically free of frost. The fan and the damper are controlled to open to cool the hot end of the semiconductor element, so that the cold end continues to cool the refrigeration chamber. When the difference between the current temperature of the third magnetic block and the third current temperature is greater than the third threshold, it means that the third magnetic block is frosted. The coil assembly is controlled to pass alternating current to generate an alternating magnetic field, so that the magnetic assembly generates eddy current and heats up to defrost.
[0084] Combination Figure 7 As shown, the embodiment of the present disclosure provides another control method for a refrigerator, comprising:
[0085] S701, obtaining a first current temperature of the refrigeration compartment;
[0086] S702, when the difference between the first current temperature and the target temperature is greater than or equal to a first threshold, controlling the semiconductor element to be powered on;
[0087] S703, when the difference between the first current temperature and the target temperature is greater than the second threshold value and less than the first threshold value, controlling one of the first coil and the second coil to pass direct current;
[0088] S704, when the difference between the first current temperature and the target temperature is less than a second threshold, controlling the first coil and the second coil to pass direct current, and the current directions in the first coil and the second coil are opposite, wherein the second threshold is less than the first threshold;
[0089] S705, obtaining the current temperature of the third magnetic conductive block and obtaining the second current temperature of the refrigeration compartment;
[0090] S706, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is less than or equal to a third threshold, control the fan and the damper to open;
[0091] S707, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than a third threshold, the coil assembly is controlled to pass alternating current.
[0092] In the disclosed embodiment, firstly, the relationship between the difference between the first current temperature of the refrigeration room and the target temperature and the first threshold is judged to control the power on and off of the semiconductor element and the coil assembly. Secondly, when the difference between the first current temperature of the refrigeration room and the target temperature is less than the first threshold, the second threshold less than the first threshold is selected as the judgment standard, so that it can be more accurately judged whether the temperature in the refrigeration room is close to the target temperature, thereby controlling the number of energized coils of the coil assembly. Then, by judging the relationship between the difference between the current temperature of the third magnetic conductive block and the second current temperature and the third threshold, the frosting condition of the third magnetic conductive block is inferred. In a specific embodiment, the third threshold value of 5°C is taken as an example. When the difference between the current temperature of the third magnetic conductive block and the second current temperature is less than or equal to 5°C, it means that there is basically no frost on the third magnetic conductive block, and the fan and the damper are controlled to open to cool the hot end of the semiconductor element, so that the cold end continues to cool the refrigeration room. When the difference between the current temperature of the third magnetic block and the second current temperature is greater than 5°C, it indicates that the third magnetic block is frosted. The control coil assembly is supplied with alternating current to generate an alternating magnetic field, causing the magnetic assembly to generate eddy currents and generate heat to defrost.
[0093] Optionally, in step S706, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is less than or equal to a third threshold, controlling the fan and the damper to open includes:
[0094] The fifth current temperature of the refrigeration room is obtained;
[0095] When the difference between the fifth current temperature and the target temperature is less than or equal to the second threshold and greater than or equal to the sixth threshold, the fan and the damper are maintained in an open state;
[0096] When the difference between the fifth current temperature and the target temperature is less than the sixth threshold and greater than the seventh threshold, the semiconductor element is powered off, and the fan and the damper are closed, wherein the sixth threshold is greater than zero and the seventh threshold is less than zero.
[0097] By judging the relationship between the difference between the fifth current temperature and the target temperature and the sixth threshold value and the seventh threshold value, it is possible to more accurately judge whether the temperature in the refrigeration room is close to the target temperature, so as to control the switch of the fan and the damper. In a specific embodiment, the sixth threshold value is 0.5°C and the seventh threshold value is -0.5°C as an example. When the difference between the fifth current temperature and the target temperature is less than or equal to 1°C and greater than or equal to 0.5°C, the temperature of the refrigeration room is closer to the target temperature, and the fan and the damper are controlled to open to continue cooling the refrigeration room. When the difference between the fifth current temperature and the target temperature is less than 0.5°C and greater than -0.5°C, the temperature of the refrigeration room basically reaches the target temperature, the semiconductor element is controlled to be powered off, the fan and the damper are controlled to be closed, and the control ends.
[0098] Optionally, in step S707, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than a third threshold, controlling the coil assembly to pass alternating current includes:
[0099] When the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than a third threshold, the first coil and the second coil are both controlled to pass alternating current;
[0100] Get the third current temperature of the refrigeration room;
[0101] When the difference between the third current temperature and the target temperature is greater than or equal to a fourth threshold, one of the first coil and the second coil is controlled to be de-energized, wherein the fourth threshold is greater than the second threshold.
[0102] By judging whether the difference between the third current temperature and the target temperature is greater than or equal to the fourth threshold, the number of the first coil and the second coil passing the alternating current is controlled. When the difference between the third current temperature and the target temperature is greater than or equal to the fourth threshold, it means that the defrosting of the magnetic conductive component has been carried out to a certain extent, but the defrosting is not completed, and one of the first coil and the second coil is controlled to be powered off, and the other coil continues to pass the alternating current, so as to reduce the strength of the alternating magnetic field and continue to defrost.
[0103] Combination Figure 8 As shown, the embodiment of the present disclosure provides another control method for a refrigerator, comprising:
[0104] S801, obtaining a first current temperature of the refrigeration compartment;
[0105] S802, when the difference between the first current temperature and the target temperature is greater than or equal to a first threshold, controlling the semiconductor element to be powered on;
[0106] S803, when the difference between the first current temperature and the target temperature is greater than the second threshold value and less than the first threshold value, controlling one of the first coil and the second coil to pass direct current;
[0107] S804, when the difference between the first current temperature and the target temperature is less than a second threshold, controlling the first coil and the second coil to pass direct current, and the current directions in the first coil and the second coil are opposite, wherein the second threshold is less than the first threshold;
[0108] S805, obtaining the current temperature of the third magnetic conductive block and obtaining the second current temperature of the refrigeration compartment;
[0109] S806, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is less than or equal to a third threshold, control the fan and the damper to open;
[0110] S807, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than a third threshold, controlling the first coil and the second coil to pass alternating current;
[0111] S808, obtaining a third current temperature of the refrigeration compartment;
[0112] S809, when the difference between the third current temperature and the target temperature is greater than or equal to a fourth threshold, controlling one of the first coil and the second coil to be powered off, wherein the fourth threshold is greater than the second threshold.
[0113] In the disclosed embodiment, firstly, the relationship between the difference between the first current temperature and the target temperature and the first threshold is judged to control the power on and off of the semiconductor element and the coil assembly. Secondly, when the difference between the first current temperature and the target temperature is less than the first threshold, the second threshold less than the first threshold is selected as the judgment standard, which can more accurately judge whether the temperature in the refrigeration room is close to the target temperature, so as to control the number of energized coils of the coil assembly. Then, by judging the relationship between the difference between the current temperature of the third magnetic conductive block and the second current temperature and the third threshold, the frosting condition of the third magnetic conductive block is inferred. Then, by judging whether the difference between the third current temperature and the target temperature is greater than or equal to the fourth threshold, the number of alternating currents of the first coil and the second coil is controlled. In a specific embodiment, the fourth threshold is 2°C as an example. When the difference between the third current temperature and the target temperature is greater than or equal to 2°C, it means that the defrosting of the magnetic conductive assembly has been carried out to a certain extent, but the defrosting is not completed, and one of the first coil and the second coil is controlled to be powered off, and the other continues to be powered on, reducing the intensity of the alternating magnetic field, and continuing to defrost.
[0114] Optionally, in step S809, when the difference between the third current temperature and the target temperature is greater than or equal to a fourth threshold, after controlling one of the first coil and the second coil to be powered off, the control method further includes:
[0115] Get the fourth current temperature of the refrigeration room;
[0116] When the difference between the fourth current temperature and the target temperature is greater than or equal to the fifth threshold, the first coil and the second coil are both powered off or at least one of them is powered on by direct current, wherein the fourth threshold is less than the fifth threshold.
[0117] By judging the relationship between the difference between the fourth current temperature and the target temperature and the fifth threshold, the power supply of the first coil and the second coil is controlled. When the difference between the fourth current temperature and the target temperature is greater than or equal to the fifth threshold, it means that the defrosting of the magnetic component is completed, and the first coil or the second coil does not need to continue to pass AC power. Since the temperature of the magnetic block rises during defrosting, the temperature of the refrigeration chamber rises. Therefore, the first coil and the second coil are controlled to be powered off, or the first coil or the second coil is controlled to pass DC power, or the first coil and the second coil are controlled to pass DC power, and the fan and the damper are controlled to open to cool the refrigeration chamber for better storage of food.
[0118] Combination Fig. 9 As shown, the embodiment of the present disclosure provides another control method for a refrigerator, comprising:
[0119] S901, obtaining a first current temperature of the refrigeration compartment;
[0120] S902, when the difference between the first current temperature and the target temperature is greater than or equal to a first threshold, controlling the semiconductor element to be powered on;
[0121] S903, when the difference between the first current temperature and the target temperature is greater than the second threshold and less than the first threshold, controlling one of the first coil and the second coil to pass direct current;
[0122] S904, when the difference between the first current temperature and the target temperature is less than a second threshold, controlling the first coil and the second coil to pass direct current, and the current directions in the first coil and the second coil are opposite, wherein the second threshold is less than the first threshold;
[0123] S905, obtaining the current temperature of the third magnetic conductive block and obtaining the second current temperature of the refrigeration compartment;
[0124] S906, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is less than or equal to a third threshold, control the fan and the damper to open;
[0125] S907, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than a third threshold, controlling the first coil and the second coil to pass alternating current;
[0126] S908, obtaining a third current temperature of the refrigeration compartment;
[0127] S909, when the difference between the third current temperature and the target temperature is greater than or equal to a fourth threshold, controlling one of the first coil and the second coil to be powered off, wherein the fourth threshold is greater than the second threshold;
[0128] S910, obtaining a fourth current temperature of the refrigeration compartment;
[0129] S911, when the difference between the fourth current temperature and the target temperature is greater than or equal to the fifth threshold, control the first coil and the second coil to be powered off or at least one of them to be powered on by direct current, wherein the fourth threshold is less than the fifth threshold.
[0130] In the disclosed embodiment, firstly, the relationship between the difference between the first current temperature and the target temperature and the first threshold is judged to control the power on and off of the semiconductor element and the coil assembly. Secondly, when the difference between the first current temperature and the target temperature is less than the first threshold, the second threshold less than the first threshold is selected as the judgment standard, which can more accurately judge whether the temperature in the refrigeration room is close to the target temperature, so as to control the number of energized coils of the coil assembly. Then, by judging the relationship between the difference between the current temperature of the third magnetic conductive block and the second current temperature and the third threshold, the frosting condition of the third magnetic conductive block is inferred. Then, by judging whether the difference between the third current temperature and the target temperature is greater than or equal to the fourth threshold, the number of alternating currents of the first coil and the second coil is controlled. Finally, by judging the relationship between the difference between the fourth current temperature and the target temperature and the fifth threshold, the power on condition of the first coil and the second coil is controlled. In a specific embodiment, the fifth threshold is taken as 4°C as an example. When the difference between the fourth current temperature and the target temperature is greater than or equal to the fifth threshold, it means that the defrosting of the magnetic conductive assembly is completed, and the first coil or the second coil does not need to continue to pass the alternating current. Since the temperature of the magnetic block rises during defrosting, the temperature of the refrigeration compartment also rises. Therefore, the first coil and the second coil are both powered off, or direct current is supplied to the first coil or the second coil, or direct current is supplied to both the first coil and the second coil, and the fan and the damper are controlled to open to cool the refrigeration compartment and better store food.
[0131] Combination Fig.10 As shown, in a specific embodiment, a control method for a refrigerator includes:
[0132] S1001, obtaining a first current temperature of the refrigeration compartment;
[0133] S1002, when the difference between the first current temperature and the target temperature is greater than or equal to 3°C, controlling the semiconductor element to be powered on;
[0134] S1003, when the difference between the first current temperature and the target temperature is greater than 1° C. and less than 3° C., controlling the first coil to pass direct current;
[0135] S1004, when the difference between the first current temperature and the target temperature is less than 1° C., controlling the first coil and the second coil to pass direct current, and the current directions in the first coil and the second coil are opposite;
[0136] S1005, obtaining the current temperature of the third magnetic conductive block and obtaining the second current temperature of the refrigeration compartment;
[0137] S1006, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is less than or equal to 5° C., control the fan and the damper to open;
[0138] S1007, obtaining a fifth current temperature of the refrigeration compartment;
[0139] S1008, when the difference between the fifth current temperature and the target temperature is less than or equal to 1°C and greater than or equal to 0.5°C, controlling the fan and the damper to continue to be opened;
[0140] S1009, when the difference between the fifth current temperature and the target temperature is less than 0.5°C and greater than -0.5°C, the control ends;
[0141] S1010, when the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than 5° C., controlling the first coil and the second coil to pass alternating current;
[0142] S1011, obtaining a third current temperature of the refrigeration compartment;
[0143] S1012, when the difference between the third current temperature and the target temperature is greater than or equal to 2° C., controlling the first coil to continue to supply AC power and the second coil to cut off power;
[0144] S1013, obtaining a fourth current temperature of the refrigeration compartment;
[0145] S1014: When the difference between the fourth current temperature and the target temperature is greater than or equal to 4° C., direct current is supplied to both the first coil and the second coil.
[0146] In this specific embodiment, firstly, the relationship between the difference between the first current temperature of the refrigeration room and the target temperature and 3°C is judged to control the power on and off of the semiconductor element and the coil assembly. Secondly, when the difference between the first current temperature and the target temperature is less than 3°C, 1°C less than 3°C is selected as the judgment standard, which can more accurately judge whether the temperature in the refrigeration room is close to the target temperature, thereby controlling the number of energized coils of the coil assembly. Then, by judging the relationship between the difference between the current temperature of the third magnetic conductive block and the second current temperature and 5°C, the frost condition of the third magnetic conductive block is inferred. When the difference between the current temperature of the third magnetic conductive block and the second current temperature is less than or equal to 5°C, it is judged whether to continue to cool the refrigeration room according to the difference between the fifth current temperature and the target temperature. When the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than 5°C, it is judged whether the difference between the third current temperature and the target temperature is greater than or equal to 2°C, and the number of alternating currents of the first coil and the second coil is controlled to defrost the magnetic conductive assembly. Finally, by determining the relationship between the difference between the fourth current temperature and the target temperature and 4° C., the energization of the first coil and the second coil is controlled to cool the refrigeration compartment again, and the above steps are repeated.
[0147] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A refrigerator, characterized in that: include: The box body is provided with a refrigeration compartment and defines a heat exchange air duct located outside the refrigeration compartment; The semiconductor element comprises a cold end and a hot end, wherein the cold end is arranged in the heat exchange air duct or in the refrigeration chamber, and the hot end is arranged in the heat exchange air duct, and the distance between the cold end and the refrigeration chamber is smaller than the distance between the hot end and the refrigeration chamber; A magnetic conductive component, corresponding to the semiconductor element, for exchanging heat with the cold end and / or the hot end of the semiconductor element; The coil assembly is sleeved on the outside of the magnetic conductive assembly and is used to generate a magnetic field; The first controller is connected to the semiconductor element and the coil assembly to control the on and off of the semiconductor element and the coil assembly.
2. The refrigerator according to claim 1, characterized in that: The magnetic components include: A first magnetic conductive block corresponds to the cold end of the semiconductor element and is used for exchanging heat with the cold end; The second magnetic conductive block corresponds to the cold end of the semiconductor element, is used for heat exchange with the cold end, and is arranged opposite to the first magnetic conductive block; The third magnetic conductive block corresponds to the hot end of the semiconductor element and is located in the heat exchange air duct for exchanging heat with the hot end.
3. The refrigerator according to claim 2, characterized in that: The coil assembly includes: A first coil is sleeved on the outer side of the first magnetic conductive block; The second coil is sleeved on the outer side of the second magnetic conductive block.
4. The refrigerator according to claim 3, characterized in that: The first magnetic conductive block comprises a first section and a second section, the first section is arranged on the top wall of the refrigeration chamber, the second section is arranged on the rear wall of the refrigeration chamber, and the first coil is sleeved on the outer side of the second section; The second magnetic conductive block comprises a third section and a fourth section, the third section is arranged on the bottom wall of the refrigeration chamber, the fourth section is arranged on the rear wall of the refrigeration chamber, and the second coil sleeve is arranged on the outer side of the fourth section.
5. The refrigerator according to any one of claims 1 to 4, characterized in that: The box body further defines a main air duct, the heat exchange air duct is connected in parallel with a part of the air duct section of the main air duct, the refrigerator further includes an evaporator and a fan, and the evaporator and the fan are both arranged in the main air duct; the refrigerator further includes: The air door is arranged between the entrance of the heat exchange air duct and the main air duct, and is used to control the opening and closing between the entrance of the heat exchange air duct and the main air duct; The second controller is connected to the damper and is used for controlling the opening and closing of the damper.
6. A control method for a refrigerator according to any one of claims 1 to 5, characterized in that: include: Get the first current temperature of the refrigeration room; When the difference between the first current temperature and the target temperature is greater than or equal to a first threshold, controlling the semiconductor element to be powered on; When the difference between the first current temperature and the target temperature is smaller than the first threshold, the coil assembly is controlled to pass direct current.
7. The refrigerator control method according to claim 6, characterized in that: When the difference between the first current temperature and the target temperature is less than the first threshold, the coil assembly is controlled to pass direct current, including: When the difference between the first current temperature and the target temperature is greater than the second threshold value and less than the first threshold value, controlling one of the first coil and the second coil to pass direct current; When the difference between the first current temperature and the target temperature is less than or equal to a second threshold, the first coil and the second coil are controlled to pass direct current, and the current directions in the first coil and the second coil are opposite, wherein the second threshold is less than the first threshold.
8. The refrigerator control method according to claim 7, characterized in that: Also includes: When the difference between the first current temperature and the target temperature is less than or equal to the second threshold, obtaining the current temperature of the third magnetic conductive block and obtaining the second current temperature of the refrigeration compartment; When the difference between the current temperature of the third magnetic conductive block and the second current temperature is less than or equal to a third threshold, the fan and the damper are controlled to open; When the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than the third threshold, the coil assembly is controlled to pass alternating current.
9. The refrigerator control method according to claim 8, characterized in that: When the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than a third threshold, the coil assembly is controlled to pass alternating current, including: When the difference between the current temperature of the third magnetic conductive block and the second current temperature is greater than a third threshold, the first coil and the second coil are both controlled to pass alternating current; Get the third current temperature of the refrigeration room; When the difference between the third current temperature and the target temperature is greater than or equal to a fourth threshold, one of the first coil and the second coil is controlled to be de-energized, wherein the fourth threshold is greater than the second threshold.
10. The refrigerator control method according to claim 9, characterized in that: When the difference between the third current temperature and the target temperature is greater than or equal to the fourth threshold, after controlling one of the first coil and the second coil to be powered off, the control method further includes: Get the fourth current temperature of the refrigeration room; When the difference between the fourth current temperature and the target temperature is greater than or equal to the fifth threshold, the first coil and the second coil are both powered off or at least one of them is powered on by direct current, wherein the fourth threshold is less than the fifth threshold.