CN114484990B - Refrigerator and mute control method thereof - Google Patents

Refrigerator and mute control method thereof Download PDF

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Publication number
CN114484990B
CN114484990B CN202210115886.9A CN202210115886A CN114484990B CN 114484990 B CN114484990 B CN 114484990B CN 202210115886 A CN202210115886 A CN 202210115886A CN 114484990 B CN114484990 B CN 114484990B
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China
Prior art keywords
temperature
freezing
gear
refrigeration
evaporator
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CN202210115886.9A
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Chinese (zh)
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CN114484990A (en
Inventor
孙敬龙
张海鹏
齐聪山
潘毅广
丁龙辉
张宗鑫
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Hisense Refrigerator Co Ltd
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Hisense Refrigerator Co Ltd
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Priority to CN202210115886.9A priority Critical patent/CN114484990B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2201/00—Insulation
    • F25D2201/30—Insulation with respect to sound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature

Abstract

The invention discloses a refrigerator and a mute control method thereof, wherein the refrigerator comprises the following components: a case; the refrigerating system comprises a compressor, a condenser, a throttle valve, an electric valve and an evaporator group which are connected in sequence; the first temperature detection device is used for collecting the temperature in each chamber; a controller configured to: when the refrigerating state of the refrigerator is detected to change, a first current temperature of a target detection compartment corresponding to the refrigerating state is obtained through a first temperature detection device; judging whether the difference value between the set temperature of the target detection compartment and the first current temperature meets the temperature difference condition corresponding to the refrigeration state; if yes, the gear of the throttle valve is adjusted to be a first gear corresponding to the refrigerating state; if not, the gear of the throttle valve is adjusted to a second gear corresponding to the refrigerating state. The invention can effectively reduce the eruption noise of the refrigerant, effectively improve the system pressure, reduce the load of the compressor and reduce the energy consumption of products.

Description

Refrigerator and mute control method thereof
Technical Field
The invention relates to the technical field of household appliances, in particular to a refrigerator and a mute control method of the refrigerator.
Background
The refrigerator operates as a home appliance for a 24-hour full period of time every day, in which case the user's mute requirement for the refrigerator is high. The flow process of the refrigerant in the refrigeration system is quite complex, and because the flow rate of the refrigerant in the refrigerator is generally large at present and the section of the outlet of the capillary tube is suddenly changed, the refrigerant flows out of the capillary tube into the evaporator to form jet flow, so that the jet flow noise is easy to generate.
Disclosure of Invention
The embodiment of the invention provides a refrigerator and a mute control method of the refrigerator, which can effectively reduce the eruption noise of a refrigerant, can effectively improve the system pressure, reduce the load of a compressor and reduce the energy consumption of products.
An embodiment of the present invention provides a refrigerator including:
the box body is internally provided with at least two compartments;
the refrigerating system comprises a compressor, a condenser, a throttle valve, an electric valve and an evaporator group which are connected in sequence; the evaporator group comprises an evaporator branch of each compartment; the electric valve is used for controlling the on-off of each evaporator branch;
the first temperature detection device is used for collecting the temperature in each compartment;
a controller configured to:
When detecting that the refrigerating state of the refrigerator changes, acquiring a first current temperature of a target detection compartment corresponding to the refrigerating state through the first temperature detection device;
judging whether the difference value between the set temperature of the target detection compartment and the first current temperature meets the temperature difference condition corresponding to the refrigeration state or not;
if yes, the gear of the throttle valve is adjusted to be a first gear corresponding to the refrigerating state;
if not, the gear of the throttle valve is adjusted to be a second gear corresponding to the refrigeration state; the opening degree is smaller as the gear of the throttle valve is higher, and the first gear is higher than the second gear.
As an improvement of the above-mentioned scheme, the compartment in the box body includes a refrigerating chamber and a freezing chamber;
the refrigerating state includes a first refrigerating state in which the freezing chamber and the refrigerating chamber are simultaneously refrigerated, and a second refrigerating state in which the freezing chamber is separately refrigerated;
the target detection compartments corresponding to the first refrigeration state and the second refrigeration state are the freezing chambers;
the temperature difference conditions corresponding to the first refrigeration state and the second refrigeration state are: the absolute value of the difference is smaller than a first preset value.
As an improvement of the scheme, the evaporator branch of the refrigerating chamber comprises a refrigerating capillary tube, a refrigerating transition tube and a refrigerating evaporator;
the evaporator branch of the freezing chamber comprises a freezing capillary tube, a freezing transition tube, an air return tube and a freezing evaporator;
the first outlet of the electric valve is connected with the inlet of the refrigeration capillary tube; the outlet of the refrigeration capillary tube is connected with the inlet of the refrigeration evaporator through the refrigeration transition pipe; the outlet of the refrigeration evaporator is connected with the first inlet of the air return pipe; the second outlet of the electric valve is connected with the inlet of the freezing capillary tube; the outlet of the freezing capillary tube is connected with the second inlet of the air return pipe through the freezing transition pipe; the outlet of the air return pipe is connected with the inlet of the freezing evaporator; the outlet of the freezing evaporator is connected with the inlet of the compressor.
As an improvement of the scheme, the compartment in the box body also comprises a temperature changing chamber;
the refrigeration state further includes a third refrigeration state in which the freezing chamber and the temperature changing chamber are simultaneously refrigerated;
the target detection compartment corresponding to the third refrigeration state comprises the freezing chamber and the temperature changing chamber;
The temperature difference condition corresponding to the third refrigeration state is as follows: the absolute value of the difference value corresponding to the freezing chamber is smaller than the first preset value, and the absolute value of the difference value corresponding to the temperature changing chamber is smaller than the second preset value;
the evaporator branch of the temperature changing chamber comprises a temperature changing capillary tube, a temperature changing transition tube and a temperature changing evaporator;
the third outlet of the electric valve is connected with the inlet of the variable-temperature capillary tube, the outlet of the variable-temperature capillary tube is connected with the inlet of the variable-temperature evaporator through the variable-temperature transition tube, and the outlet of the variable-temperature evaporator is connected with the third inlet of the muffler.
As an improvement of the above, the refrigerator further includes:
the second temperature detection device is arranged near the outlet of the freezing capillary tube;
the third temperature detection device is arranged on the muffler;
the controller is further configured to:
after the working time of the throttle valve in the first gear or the second gear reaches a preset time, periodically judging whether the difference value between the second current temperature and the third current temperature is smaller than a third preset value corresponding to the refrigerating state, and when the difference value is judged to be yes, adjusting the gear of the throttle valve to be a higher gear of the current gear until the compressor is stopped;
The second current temperature is the current temperature of the outlet of the freezing capillary tube obtained by the second temperature detection device, and the third current temperature is the current temperature of the muffler obtained by the third temperature detection device.
The invention further provides a mute control method of a refrigerator, wherein at least two compartments are arranged in the refrigerator body of the refrigerator, a refrigerating system of the refrigerator comprises a compressor, a condenser, a throttle valve, an electric valve and an evaporator group which are sequentially connected, the evaporator group comprises an evaporator branch of each compartment, and the electric valve is used for controlling the on-off of each evaporator branch; the method comprises the following steps:
each time a change of the refrigerating state of the refrigerator is detected, acquiring a first current temperature of a target detection compartment corresponding to the refrigerating state;
judging whether the difference value between the set temperature of the target detection compartment and the first current temperature meets the temperature difference condition corresponding to the refrigeration state or not;
if yes, the gear of the throttle valve is adjusted to be a first gear corresponding to the refrigerating state;
if not, the gear of the throttle valve is adjusted to be a second gear corresponding to the refrigeration state; the opening degree is smaller as the gear of the throttle valve is higher, and the first gear is higher than the second gear.
As an improvement of the above-mentioned scheme, the compartment in the box body includes a refrigerating chamber and a freezing chamber;
the refrigerating state includes a first refrigerating state in which the freezing chamber and the refrigerating chamber are simultaneously refrigerated, and a second refrigerating state in which the freezing chamber is separately refrigerated;
the target detection compartments corresponding to the first refrigeration state and the second refrigeration state are the freezing chambers;
the temperature difference conditions corresponding to the first refrigeration state and the second refrigeration state are: the absolute value of the difference is smaller than a first preset value.
As an improvement of the scheme, the evaporator branch of the refrigerating chamber comprises a refrigerating capillary tube, a refrigerating transition tube and a refrigerating evaporator;
the evaporator branch of the freezing chamber comprises a freezing capillary tube, a freezing transition tube, an air return tube and a freezing evaporator;
the first outlet of the electric valve is connected with the inlet of the refrigeration capillary tube; the outlet of the refrigeration capillary tube is connected with the inlet of the refrigeration evaporator through the refrigeration transition pipe; the outlet of the refrigeration evaporator is connected with the first inlet of the air return pipe; the second outlet of the electric valve is connected with the inlet of the freezing capillary tube; the outlet of the freezing capillary tube is connected with the second inlet of the air return pipe through the freezing transition pipe; the outlet of the air return pipe is connected with the inlet of the freezing evaporator; the outlet of the freezing evaporator is connected with the inlet of the compressor.
As an improvement of the scheme, the compartment in the box body also comprises a temperature changing chamber;
the refrigeration state further includes a third refrigeration state in which the freezing chamber and the temperature changing chamber are simultaneously refrigerated;
the target detection compartment corresponding to the third refrigeration state comprises the freezing chamber and the temperature changing chamber;
the temperature difference condition corresponding to the third refrigeration state is as follows: the absolute value of the difference value corresponding to the freezing chamber is smaller than the first preset value, and the absolute value of the difference value corresponding to the temperature changing chamber is smaller than the second preset value;
the evaporator branch of the temperature changing chamber comprises a temperature changing capillary tube, a temperature changing transition tube and a temperature changing evaporator;
the third outlet of the electric valve is connected with the inlet of the variable-temperature capillary tube, the outlet of the variable-temperature capillary tube is connected with the inlet of the variable-temperature evaporator through the variable-temperature transition tube, and the outlet of the variable-temperature evaporator is connected with the third inlet of the muffler.
As an improvement of the above solution, the method further includes:
after the working time of the throttle valve in the first gear or the second gear reaches a preset time, periodically judging whether the difference value between the second current temperature and the third current temperature is smaller than a third preset value corresponding to the refrigerating state, and when the difference value is judged to be yes, adjusting the gear of the throttle valve to be a higher gear of the current gear until the compressor is stopped;
The second current temperature is the current temperature at the outlet of the freezing capillary tube, and the third current temperature is the current temperature of the muffler.
Compared with the prior art, the refrigerator and the mute control method of the refrigerator, provided by the embodiment of the invention, have the advantages that when the refrigerating state of the refrigerator is detected to change, the throttle valve is subjected to gear control according to whether the difference value between the set temperature of the target detection compartment corresponding to the refrigerating state and the first current temperature meets the temperature difference condition corresponding to the refrigerating state, so that the output of the refrigerant according to the requirement can be realized, the flow of the refrigerant is matched with the refrigerating requirement of a system, the eruption noise caused by overlarge flow of the refrigerant is avoided, the eruption noise of the refrigerant can be effectively reduced, the system pressure can be effectively improved, the load of a compressor is reduced, and the energy consumption of a product is reduced.
Drawings
Fig. 1 is a schematic view of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a refrigerating system of a conventional refrigerator;
fig. 3 is a schematic structural view of a refrigerating system of a refrigerator according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a specific workflow of a refrigerator according to an embodiment of the present invention;
Fig. 5 is a flowchart of a mute control method for a refrigerator according to an embodiment of the present invention;
fig. 6 is a flowchart of another mute control method for a refrigerator according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Referring to fig. 1, a schematic structure of a refrigerator according to an embodiment of the present invention is shown.
An embodiment of the present invention provides a refrigerator including:
a case 10 having at least two compartments therein;
A refrigeration system 20 comprising a compressor, a condenser, a throttle valve, an electrically operated valve, and an evaporator set connected in sequence; the evaporator group comprises an evaporator branch of each compartment; the electric valve is used for controlling the on-off of each evaporator branch;
a first temperature detecting means 30 for collecting the temperature in each of the compartments;
a controller 40 configured to:
each time a change in the cooling state of the refrigerator is detected, acquiring a first current temperature of a target detection compartment corresponding to the cooling state by the first temperature detection device 30;
judging whether the difference value between the set temperature of the target detection compartment and the first current temperature meets the temperature difference condition corresponding to the refrigeration state or not;
if yes, the gear of the throttle valve is adjusted to be a first gear corresponding to the refrigerating state;
if not, the gear of the throttle valve is adjusted to be a second gear corresponding to the refrigeration state; the opening degree is smaller as the gear of the throttle valve is higher, and the first gear is higher than the second gear.
In this embodiment, the refrigerator 10 may have two compartments, i.e., a refrigerating compartment and a freezing compartment. Naturally, a temperature changing chamber may be provided in addition to the refrigerating chamber and the freezing chamber, and the present invention is not limited thereto.
In this embodiment, the electric valve is used to control the on/off of each evaporator branch, and whether the evaporator branch is turned on or not will affect the refrigeration of the corresponding compartment, so the refrigeration state can be determined according to the working state of the electric valve. For example, a user can close the compartments which do not need refrigeration according to the use requirement so as to reduce the power consumption of actual use, and after receiving a user instruction, the control system of the refrigerator turns off the evaporator branch corresponding to the compartments by controlling the state of the electric valve so as to realize the function of stopping refrigeration of the corresponding compartments, and when the state of the electric valve changes, the refrigeration state changes. In addition, the control system of the refrigerator can judge whether the compartments need to be refrigerated according to the magnitude relation between the actual temperature and the set temperature in each compartment when in operation, and adjust the state of the electric valve according to the judging result, and when the state of the electric valve is changed, the refrigerating state is also changed.
As shown in fig. 2, in the conventional refrigeration system, evaporators are respectively arranged in a refrigerating compartment, a temperature-changing compartment and a freezing compartment of a refrigerator to perform independent refrigeration, and the compartment refrigeration switching is realized through an electric valve or an electromagnetic valve, for example, when the refrigerating compartment and the freezing compartment are refrigerated, the electric valve controls the refrigerant to enter a refrigerating capillary tube and a freezing capillary tube, pass through the refrigerating compartment and the freezing compartment, and finally the refrigerant flows out from the evaporators of the freezing compartment and flows back to a compressor. While the refrigeration system 20 in this embodiment is shown in fig. 3, the condenser and the throttle valve are connected through a dry filter, and each evaporator branch includes a corresponding capillary tube and an evaporator, specifically, the refrigeration principle of the refrigeration system 20 is as follows: the refrigerant is compressed into high-temperature high-pressure superheated vapor by a compressor, the superheated vapor enters a condenser by an exhaust pipe of the compressor, the superheated vapor is condensed into high-temperature medium-pressure liquid in the condenser, the high-temperature medium-pressure refrigerant liquid is filtered by a drying filter and then flows through a throttle valve, the flow rate of the high-temperature medium-pressure refrigerant liquid is regulated, the refrigerant liquid enters a corresponding evaporator branch by an electric valve, the capillary tube of the evaporator branch throttles and reduces pressure, the high-temperature medium-pressure refrigerant liquid is changed into low-temperature low-pressure refrigerant liquid by high-temperature medium-pressure refrigerant, the low-temperature low-pressure refrigerant liquid is vaporized into saturated vapor by absorbing a large amount of external heat in the evaporator, refrigeration is realized, and then the saturated vapor is changed into low-pressure vapor in an air suction pipe, and is sucked into a maintenance cycle by the compressor. It will be appreciated that in the present embodiment, the throttle valve is used to regulate the flow of refrigerant into the evaporator group, the greater the opening of the throttle valve, the greater the flow of refrigerant into the evaporator group, and conversely, the smaller the opening of the throttle valve, the lesser the flow of refrigerant into the evaporator group.
It should be noted that, because different refrigeration demands exist in different refrigeration states, corresponding target detection compartments and temperature difference conditions are set for each refrigeration state in this embodiment, so that whether the temperature difference conditions of the target detection compartments meet the temperature difference conditions can be determined according to the current refrigeration demands.
According to the refrigerator provided by the embodiment of the invention, when the refrigerating state of the refrigerator is detected to change, the throttle valve is controlled to carry out gear control according to whether the difference value between the set temperature of the target detection chamber corresponding to the refrigerating state and the first current temperature meets the temperature difference condition corresponding to the refrigerating state, so that the refrigerant flow is matched with the refrigerating requirement of a system, the eruption noise caused by overlarge refrigerant flow is avoided, the eruption noise of the refrigerant is effectively reduced, the system pressure is effectively improved, the load of a compressor is reduced, and the energy consumption of a product is reduced.
As one of the alternative embodiments, the compartments within the cabinet 10 include a refrigerating compartment and a freezing compartment;
the refrigerating state includes a first refrigerating state in which the freezing chamber and the refrigerating chamber are simultaneously refrigerated, and a second refrigerating state in which the freezing chamber is separately refrigerated;
The target detection compartments corresponding to the first refrigeration state and the second refrigeration state are the freezing chambers;
the temperature difference conditions corresponding to the first refrigeration state and the second refrigeration state are: the absolute value of the difference is smaller than a first preset value.
It can be appreciated that, since the set temperature of the refrigerating chamber is far higher than the set temperature of the freezing chamber, the refrigeration requirement of the refrigerating chamber is easier to meet than the refrigeration requirement of the freezing chamber, and thus the refrigeration requirement can be determined according to the refrigeration condition of the freezing chamber in the first refrigeration state and the second refrigeration state. In this embodiment, for the first refrigeration state and the second refrigeration state, the target detection compartment corresponding to the first refrigeration state and the second refrigeration state is set to be only the freezing compartment, so that the refrigeration requirement of the refrigerator can be determined efficiently.
It should be noted that the first preset value may be set according to an actual refrigeration requirement, which is not limited herein. Preferably, the first preset value is 10 ℃.
Further, as shown in fig. 3, the evaporator branch of the refrigerating chamber comprises a refrigerating capillary tube, a refrigerating transition tube and a refrigerating evaporator;
the evaporator branch of the freezing chamber comprises a freezing capillary tube, a freezing transition tube, an air return tube and a freezing evaporator;
The first outlet of the electric valve is connected with the inlet of the refrigeration capillary tube; the outlet of the refrigeration capillary tube is connected with the inlet of the refrigeration evaporator through the refrigeration transition pipe; the outlet of the refrigeration evaporator is connected with the first inlet of the air return pipe; the second outlet of the electric valve is connected with the inlet of the freezing capillary tube; the outlet of the freezing capillary tube is connected with the second inlet of the air return pipe through the freezing transition pipe; the outlet of the air return pipe is connected with the inlet of the freezing evaporator; the outlet of the freezing evaporator is connected with the inlet of the compressor.
In this embodiment, by providing transition ducts at the outlets of the refrigerated and frozen capillaries, the abrupt cross-sectional changes are made relatively slow, thereby further reducing the refrigerant spray noise.
Still further, the compartments within the case 10 further include a variable temperature compartment;
the refrigeration state further includes a third refrigeration state in which the freezing chamber and the temperature changing chamber are simultaneously refrigerated;
the target detection compartment corresponding to the third refrigeration state comprises the freezing chamber and the temperature changing chamber;
the temperature difference condition corresponding to the third refrigeration state is as follows: the absolute value of the difference value corresponding to the freezing chamber is smaller than the first preset value, and the absolute value of the difference value corresponding to the temperature changing chamber is smaller than the second preset value;
The evaporator branch of the temperature changing chamber comprises a temperature changing capillary tube, a temperature changing transition tube and a temperature changing evaporator;
the third outlet of the electric valve is connected with the inlet of the variable-temperature capillary tube, the outlet of the variable-temperature capillary tube is connected with the inlet of the variable-temperature evaporator through the variable-temperature transition tube, and the outlet of the variable-temperature evaporator is connected with the third inlet of the muffler.
In the embodiment, the refrigerator is further provided with a temperature changing chamber, so that the storage requirement of a user is met, and the user experience is improved. In addition, since the temperature adjustable range of the temperature-changing chamber is about 6 to-20 ℃, in order to ensure that the refrigerating system 20 can meet the refrigerating requirement of the temperature-changing chamber, in this embodiment, for the third refrigerating state, the target detection chamber corresponding to the third refrigerating state is set to include the freezing chamber and the temperature-changing chamber, so that the refrigerating requirement of the refrigerator can be accurately determined. In addition, by arranging the transition pipe at the outlet of the temperature-changing capillary tube, the abrupt change condition of the section becomes relatively slow, thereby further reducing the noise of refrigerant eruption.
It should be noted that the second preset value may be set according to an actual refrigeration requirement, which is not limited herein. Preferably, the second preset value is 8 ℃.
Preferably, the refrigerator further includes:
the second temperature detection device is arranged near the outlet of the freezing capillary tube;
the third temperature detection device is arranged on the muffler;
the controller 40 is further configured to:
after the working time of the throttle valve in the first gear or the second gear reaches a preset time, periodically judging whether the difference value between the second current temperature and the third current temperature is smaller than a third preset value corresponding to the refrigerating state, and when the difference value is judged to be yes, adjusting the gear of the throttle valve to be a higher gear of the current gear until the compressor is stopped;
the second current temperature is the current temperature of the outlet of the freezing capillary tube obtained by the second temperature detection device, and the third current temperature is the current temperature of the muffler obtained by the third temperature detection device.
Illustratively, in this embodiment, the third preset value corresponding to the first refrigeration state and the third refrigeration state is 5 ℃, and the third preset value corresponding to the second refrigeration state is 8 ℃.
It should be noted that, the difference between the current temperature at the outlet of the freezing capillary tube and the current temperature at the outlet of the air return tube may reflect the sufficiency of the refrigerant flow, and the smaller the difference, the more sufficiency of the refrigerant flow is indicated. In this embodiment, after the duration of the operation of the throttle valve in the first gear or the second gear reaches the preset duration, the magnitude relation between the difference between the current temperature at the outlet of the freezing capillary tube and the current temperature of the air return tube and the third preset value corresponding to the refrigeration state is periodically determined to determine whether the refrigerant flow is sufficient, if the difference is smaller than the third preset value, it is indicated that the refrigerant flow is sufficient at this time, the refrigeration requirement is satisfied, and the gear of the throttle valve is adjusted to be the higher gear than the current gear, so as to reduce the opening of the throttle valve, reduce the refrigerant flow, and thereby reduce the refrigerant burst noise.
Illustratively, in the present embodiment, the correspondence relationship between the gear position of the throttle valve and the opening degree of the throttle valve is:
when the gear of the throttle valve is the first gear, the opening of the throttle valve is more than 95% and less than or equal to 100%;
when the gear of the throttle valve is the second gear, the opening of the throttle valve is more than 85% and less than or equal to 95%;
when the gear of the throttle valve is the third gear, the opening of the throttle valve is more than 75% and less than or equal to 85%;
when the gear of the throttle valve is the fourth gear, the opening of the throttle valve is more than 65% and less than or equal to 75%;
when the gear of the throttle valve is the fifth gear, the opening of the throttle valve is more than 55% and less than or equal to 65%;
when the gear of the throttle valve is the sixth gear, the opening of the throttle valve is more than 45% and less than or equal to 55%;
when the gear of the throttle valve is the seventh gear, the opening of the throttle valve is more than 35% and less than or equal to 45%.
Preferably, the correspondence between the gear position of the throttle valve and the opening degree of the throttle valve is shown in table 1.
TABLE 1
In a specific embodiment, the specific operation process of the refrigerator provided in this embodiment is shown in fig. 4, and is specifically as follows:
In the running state of the refrigerator, circularly judging the refrigerating state; wherein, the refrigeration state includes: freezing+cold storage (the freezing chamber and the cold storage chamber are simultaneously refrigerated), freezing+temperature changing (the freezing chamber and the temperature changing chamber are simultaneously refrigerated), and independent freezing (the freezing chamber is independently refrigerated);
every time the refrigerating state of the refrigerator is detected to be changed, if the refrigerating state is freezing and refrigerating, executing the following steps: judging the difference between the set temperature TS of the freezing chamber and the current temperature Tr, if the temperature is more than or equal to 10 ℃, regulating the opening of the throttle valve by the controller 40 to be in a fourth gear, and if the temperature is less than 10 ℃, regulating the opening of the throttle valve by the controller 40 to be in a fifth gear; after maintaining the corresponding gear for 30min, judging the difference between the temperature Tm at the outlet of the freezing capillary tube and the temperature Th at the air return tube, if the temperature is more than or equal to 5 ℃, maintaining the original gear by the opening of the throttle valve, and if the temperature is less than 5 ℃, regulating the opening of the throttle valve by the controller 40 to drop by one gear; when the freezing and refrigerating temperatures reach the set temperature, the compressor is stopped, and the refrigerator stops working; if the freezing and refrigerating temperatures do not reach the set temperatures, the refrigerator continues to work, the conditions are judged, and corresponding gear control is performed.
Every time the refrigerating state of the refrigerator is detected to be changed, if the refrigerating state is freezing and changing temperature, executing the following steps: judging the difference between the set temperature TS and the current temperature Tr of the freezing chamber and the difference between the set temperature Tbs and the current temperature Tbr of the temperature changing chamber, if the difference between the TS and the Tr is more than or equal to 10 ℃, and the difference between the Tbs and the Tbr is more than or equal to 8 ℃, regulating the opening of the throttle valve to be in a third gear by the controller 40, and if the difference between the TS and the Tr is less than 10 ℃ or the difference between the Tbs and the Tbr is less than 8 ℃, regulating the opening of the throttle valve to be in a fourth gear by the controller 40; after maintaining the corresponding gear for 30min, judging the difference between the temperature Tm at the outlet of the freezing capillary tube and the temperature Th at the air return tube, if the temperature is more than or equal to 5 ℃, maintaining the original gear by the opening of the throttle valve, and if the temperature is less than 5 ℃, regulating the opening of the throttle valve by the controller 40 to drop by one gear; when the temperature of the freezing and changing reaches the set temperature, the compressor is stopped, and the refrigerator stops working; if the freezing and temperature changing do not reach the set temperature, the refrigerator continues to work and judges the conditions, and corresponding gear control is performed.
Every time the refrigerating state of the refrigerator is detected to be changed, if the refrigerating state is freezing, executing the following steps: judging the difference between the set temperature TS of the freezing chamber and the current temperature Tr, if the temperature is more than or equal to 10 ℃, regulating the opening of the throttle valve by the controller 40 to be in a fourth gear, and if the temperature is less than 10 ℃, regulating the opening of the throttle valve by the controller 40 to be in a fifth gear; after the gear is maintained for 30min, judging the difference between the temperature Tm at the outlet of the freezing capillary tube and the temperature Th at the air return tube, if the temperature is more than or equal to 8 ℃, maintaining the original gear by the opening of the throttle valve, and if the temperature is less than 8 ℃, regulating the opening of the throttle valve by the controller 40 to drop by one gear; when the freezing reaches the set temperature, the compressor is stopped, and the refrigerator stops working; if the freezing temperature does not reach the set temperature, the refrigerator continues to work, the condition judgment is carried out, and corresponding gear control is carried out.
The noise test is performed on the existing refrigerator and the refrigerator provided by the embodiment respectively, so that test results shown in tables 2 and 3 are obtained, and as can be seen from tables 2 and 3, the noise can be effectively reduced by adjusting the flow of the refrigerant through the throttle valve, so that the refrigerator provided by the embodiment has lower noise.
Table 2 noise test results of existing refrigerator
Table 3 noise test results of refrigerator provided in this embodiment
Referring to fig. 5, a flow chart of a mute control method for a refrigerator according to an embodiment of the invention is shown.
The embodiment of the invention provides a mute control method of a refrigerator, wherein at least two compartments are arranged in the refrigerator body of the refrigerator, a refrigerating system of the refrigerator comprises a compressor, a condenser, a throttle valve, an electric valve and an evaporator group which are sequentially connected, the evaporator group comprises an evaporator branch of each compartment, and the electric valve is used for controlling the on-off of each evaporator branch; the method comprises the following steps:
s21, acquiring a first current temperature of a target detection compartment corresponding to a refrigerating state when detecting that the refrigerating state of the refrigerator changes;
s22, judging whether the difference value between the set temperature of the target detection compartment and the first current temperature meets the temperature difference condition corresponding to the refrigeration state; if yes, the gear of the throttle valve is adjusted to be a first gear corresponding to the refrigerating state; if not, the gear of the throttle valve is adjusted to be a second gear corresponding to the refrigeration state; the opening degree is smaller as the gear of the throttle valve is higher, and the first gear is higher than the second gear.
In this embodiment, the refrigerator may have two compartments, namely, a refrigerating compartment and a freezing compartment. Naturally, a temperature changing chamber may be provided in addition to the refrigerating chamber and the freezing chamber, and the present invention is not limited thereto.
In this embodiment, the electric valve is used to control the on/off of each evaporator branch, and whether the evaporator branch is turned on or not will affect the refrigeration of the corresponding compartment, so the refrigeration state can be determined according to the working state of the electric valve. For example, a user can close the compartments which do not need refrigeration according to the use requirement so as to reduce the power consumption of actual use, and after receiving a user instruction, the control system of the refrigerator turns off the evaporator branch corresponding to the compartments by controlling the state of the electric valve so as to realize the function of stopping refrigeration of the corresponding compartments, and when the state of the electric valve changes, the refrigeration state changes. In addition, the control system of the refrigerator can judge whether the compartments need to be refrigerated according to the magnitude relation between the actual temperature and the set temperature in each compartment when in operation, and adjust the state of the electric valve according to the judging result, and when the state of the electric valve is changed, the refrigerating state is also changed.
As shown in fig. 2, in the conventional refrigeration system, evaporators are respectively arranged in a refrigerating compartment, a temperature-changing compartment and a freezing compartment of a refrigerator to perform independent refrigeration, and the compartment refrigeration switching is realized through an electric valve or an electromagnetic valve, for example, when the refrigerating compartment and the freezing compartment are refrigerated, the electric valve controls the refrigerant to enter a refrigerating capillary tube and a freezing capillary tube, pass through the refrigerating compartment and the freezing compartment, and finally the refrigerant flows out from the evaporators of the freezing compartment and flows back to a compressor. Whereas the refrigeration system in this embodiment is shown in fig. 3, the condenser and the throttle valve are connected through a dry filter, and each evaporator branch includes a corresponding capillary tube and an evaporator, specifically, the refrigeration principle of the refrigeration system is as follows: the refrigerant is compressed into high-temperature high-pressure superheated vapor by a compressor, the superheated vapor enters a condenser by an exhaust pipe of the compressor, the superheated vapor is condensed into high-temperature medium-pressure liquid in the condenser, the high-temperature medium-pressure refrigerant liquid is filtered by a drying filter and then flows through a throttle valve, the flow rate of the high-temperature medium-pressure refrigerant liquid is regulated, the refrigerant liquid enters a corresponding evaporator branch by an electric valve, the capillary tube of the evaporator branch throttles and reduces pressure, the high-temperature medium-pressure refrigerant liquid is changed into low-temperature low-pressure refrigerant liquid by high-temperature medium-pressure refrigerant, the low-temperature low-pressure refrigerant liquid is vaporized into saturated vapor by absorbing a large amount of external heat in the evaporator, refrigeration is realized, and then the saturated vapor is changed into low-pressure vapor in an air suction pipe, and is sucked into a maintenance cycle by the compressor. It will be appreciated that in the present embodiment, the throttle valve is used to regulate the flow of refrigerant into the evaporator group, the greater the opening of the throttle valve, the greater the flow of refrigerant into the evaporator group, and conversely, the smaller the opening of the throttle valve, the lesser the flow of refrigerant into the evaporator group.
It should be noted that, because different refrigeration demands exist in different refrigeration states, corresponding target detection compartments and temperature difference conditions are set for each refrigeration state in this embodiment, so that whether the temperature difference conditions of the target detection compartments meet the temperature difference conditions can be determined according to the current refrigeration demands.
According to the mute control method for the refrigerator, when the refrigerating state of the refrigerator is detected to change, the throttle valve is subjected to gear control according to whether the difference value between the set temperature of the target detection compartment corresponding to the refrigerating state and the first current temperature meets the temperature difference condition corresponding to the refrigerating state, so that the refrigerant can be output as required, the refrigerant flow is matched with the refrigerating requirement of a system, the eruption noise caused by overlarge refrigerant flow is avoided, the eruption noise of the refrigerant can be effectively reduced, the system pressure can be effectively improved, the load of a compressor is reduced, and the energy consumption of a product is reduced.
As one of the alternative embodiments, the compartments in the case include a refrigerating compartment and a freezing compartment;
the refrigerating state includes a first refrigerating state in which the freezing chamber and the refrigerating chamber are simultaneously refrigerated, and a second refrigerating state in which the freezing chamber is separately refrigerated;
The target detection compartments corresponding to the first refrigeration state and the second refrigeration state are the freezing chambers;
the temperature difference conditions corresponding to the first refrigeration state and the second refrigeration state are: the absolute value of the difference is smaller than a first preset value.
It can be appreciated that, since the set temperature of the refrigerating chamber is far higher than the set temperature of the freezing chamber, the refrigeration requirement of the refrigerating chamber is easier to meet than the refrigeration requirement of the freezing chamber, and thus the refrigeration requirement can be determined according to the refrigeration condition of the freezing chamber in the first refrigeration state and the second refrigeration state. In this embodiment, for the first refrigeration state and the second refrigeration state, the target detection compartment corresponding to the first refrigeration state and the second refrigeration state is set to be only the freezing compartment, so that the refrigeration requirement of the refrigerator can be determined efficiently.
It should be noted that the first preset value may be set according to an actual refrigeration requirement, which is not limited herein. Preferably, the first preset value is 10 ℃.
Further, as shown in fig. 3, the evaporator branch of the refrigerating chamber comprises a refrigerating capillary tube, a refrigerating transition tube and a refrigerating evaporator;
the evaporator branch of the freezing chamber comprises a freezing capillary tube, a freezing transition tube, an air return tube and a freezing evaporator;
The first outlet of the electric valve is connected with the inlet of the refrigeration capillary tube; the outlet of the refrigeration capillary tube is connected with the inlet of the refrigeration evaporator through the refrigeration transition pipe; the outlet of the refrigeration evaporator is connected with the first inlet of the air return pipe; the second outlet of the electric valve is connected with the inlet of the freezing capillary tube; the outlet of the freezing capillary tube is connected with the second inlet of the air return pipe through the freezing transition pipe; the outlet of the air return pipe is connected with the inlet of the freezing evaporator; the outlet of the freezing evaporator is connected with the inlet of the compressor.
In this embodiment, by providing transition ducts at the outlets of the refrigerated and frozen capillaries, the abrupt cross-sectional changes are made relatively slow, thereby further reducing the refrigerant spray noise.
Further, the compartment in the box body also comprises a temperature changing chamber;
the refrigeration state further includes a third refrigeration state in which the freezing chamber and the temperature changing chamber are simultaneously refrigerated;
the target detection compartment corresponding to the third refrigeration state comprises the freezing chamber and the temperature changing chamber;
the temperature difference condition corresponding to the third refrigeration state is as follows: the absolute value of the difference value corresponding to the freezing chamber is smaller than the first preset value, and the absolute value of the difference value corresponding to the temperature changing chamber is smaller than the second preset value;
The evaporator branch of the temperature changing chamber comprises a temperature changing capillary tube, a temperature changing transition tube and a temperature changing evaporator;
the third outlet of the electric valve is connected with the inlet of the variable-temperature capillary tube, the outlet of the variable-temperature capillary tube is connected with the inlet of the variable-temperature evaporator through the variable-temperature transition tube, and the outlet of the variable-temperature evaporator is connected with the third inlet of the muffler.
In the embodiment, the refrigerator is further provided with a temperature changing chamber, so that the storage requirement of a user is met, and the user experience is improved. In addition, since the temperature adjustable range of the temperature changing chamber is about 6 to-20 ℃, in order to ensure that the refrigerating system can meet the refrigerating requirement of the temperature changing chamber, in this embodiment, for the third refrigerating state, the target detection chamber corresponding to the third refrigerating state is set to include the freezing chamber and the temperature changing chamber, so that the refrigerating requirement of the refrigerator can be accurately determined. In addition, by arranging the transition pipe at the outlet of the temperature-changing capillary tube, the abrupt change condition of the section becomes relatively slow, thereby further reducing the noise of refrigerant eruption.
It should be noted that the second preset value may be set according to an actual refrigeration requirement, which is not limited herein. Preferably, the second preset value is 8 ℃.
Optionally, referring to fig. 6, the method further includes:
s23, after the working time of the throttle valve in the first gear or the second gear reaches a preset time, periodically judging whether the difference value between the second current temperature and the third current temperature is smaller than a third preset value corresponding to the refrigerating state, and when the difference value is judged to be smaller than the third preset value, adjusting the gear of the throttle valve to be a higher gear of the current gear until the compressor is stopped;
the second current temperature is the current temperature at the outlet of the freezing capillary tube, and the third current temperature is the current temperature of the muffler.
Illustratively, in this embodiment, the third preset value corresponding to the first refrigeration state and the third refrigeration state is 5 ℃, and the third preset value corresponding to the second refrigeration state is 8 ℃.
It should be noted that, the difference between the current temperature at the outlet of the freezing capillary tube and the current temperature at the outlet of the air return tube may reflect the sufficiency of the refrigerant flow, and the smaller the difference, the more sufficiency of the refrigerant flow is indicated. In this embodiment, after the duration of the operation of the throttle valve in the first gear or the second gear reaches the preset duration, the magnitude relation between the difference between the current temperature at the outlet of the freezing capillary tube and the current temperature of the air return tube and the third preset value corresponding to the refrigeration state is periodically determined to determine whether the refrigerant flow is sufficient, if the difference is smaller than the third preset value, it is indicated that the refrigerant flow is sufficient at this time, the refrigeration requirement is satisfied, and the gear of the throttle valve is adjusted to be the higher gear than the current gear, so as to reduce the opening of the throttle valve, reduce the refrigerant flow, and thereby reduce the refrigerant burst noise.
Illustratively, in the present embodiment, the correspondence relationship between the gear position of the throttle valve and the opening degree of the throttle valve is:
when the gear of the throttle valve is the first gear, the opening of the throttle valve is more than 95% and less than or equal to 100%;
when the gear of the throttle valve is the second gear, the opening of the throttle valve is more than 85% and less than or equal to 95%;
when the gear of the throttle valve is the third gear, the opening of the throttle valve is more than 75% and less than or equal to 85%;
when the gear of the throttle valve is the fourth gear, the opening of the throttle valve is more than 65% and less than or equal to 75%;
when the gear of the throttle valve is the fifth gear, the opening of the throttle valve is more than 55% and less than or equal to 65%;
when the gear of the throttle valve is the sixth gear, the opening of the throttle valve is more than 45% and less than or equal to 55%;
when the gear of the throttle valve is the seventh gear, the opening of the throttle valve is more than 35% and less than or equal to 45%.
Preferably, the correspondence between the gear position of the throttle valve and the opening degree of the throttle valve is as shown in table 1 above.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (8)

1. A refrigerator, comprising:
the box body is internally provided with at least two compartments;
the refrigerating system comprises a compressor, a condenser, a throttle valve, an electric valve and an evaporator group which are connected in sequence; the evaporator group comprises an evaporator branch of each compartment; the electric valve is used for controlling the on-off of each evaporator branch;
the first temperature detection device is used for collecting the temperature in each compartment;
a controller configured to:
when detecting that the refrigerating state of the refrigerator changes, acquiring a first current temperature of a target detection compartment corresponding to the refrigerating state through the first temperature detection device;
judging whether the difference value between the set temperature of the target detection compartment and the first current temperature meets the temperature difference condition corresponding to the refrigeration state or not;
if yes, the gear of the throttle valve is adjusted to be a first gear corresponding to the refrigerating state;
if not, the gear of the throttle valve is adjusted to be a second gear corresponding to the refrigeration state; the opening degree is smaller as the gear of the throttle valve is higher, and the first gear is higher than the second gear;
wherein, the compartment in the box body comprises a refrigerating chamber and a freezing chamber;
The refrigerating state includes a first refrigerating state in which the freezing chamber and the refrigerating chamber are simultaneously refrigerated, and a second refrigerating state in which the freezing chamber is separately refrigerated;
the target detection compartments corresponding to the first refrigeration state and the second refrigeration state are the freezing chambers;
the temperature difference conditions corresponding to the first refrigeration state and the second refrigeration state are: the absolute value of the difference is smaller than a first preset value.
2. The refrigerator of claim 1, wherein the evaporator branch of the refrigerating chamber comprises a refrigerating capillary tube, a refrigerating transition tube, and a refrigerating evaporator;
the evaporator branch of the freezing chamber comprises a freezing capillary tube, a freezing transition tube, an air return tube and a freezing evaporator;
the first outlet of the electric valve is connected with the inlet of the refrigeration capillary tube; the outlet of the refrigeration capillary tube is connected with the inlet of the refrigeration evaporator through the refrigeration transition pipe; the outlet of the refrigeration evaporator is connected with the first inlet of the air return pipe; the second outlet of the electric valve is connected with the inlet of the freezing capillary tube; the outlet of the freezing capillary tube is connected with the second inlet of the air return pipe through the freezing transition pipe; the outlet of the air return pipe is connected with the inlet of the freezing evaporator; the outlet of the freezing evaporator is connected with the inlet of the compressor.
3. The refrigerator of claim 2, wherein the compartment in the cabinet further comprises a temperature varying compartment;
the refrigeration state further includes a third refrigeration state in which the freezing chamber and the temperature changing chamber are simultaneously refrigerated;
the target detection compartment corresponding to the third refrigeration state comprises the freezing chamber and the temperature changing chamber;
the temperature difference condition corresponding to the third refrigeration state is as follows: the absolute value of the difference value corresponding to the freezing chamber is smaller than the first preset value, and the absolute value of the difference value corresponding to the temperature changing chamber is smaller than the second preset value;
the evaporator branch of the temperature changing chamber comprises a temperature changing capillary tube, a temperature changing transition tube and a temperature changing evaporator;
the third outlet of the electric valve is connected with the inlet of the variable-temperature capillary tube, the outlet of the variable-temperature capillary tube is connected with the inlet of the variable-temperature evaporator through the variable-temperature transition tube, and the outlet of the variable-temperature evaporator is connected with the third inlet of the muffler.
4. The refrigerator of claim 2 or 3, further comprising:
the second temperature detection device is arranged near the outlet of the freezing capillary tube;
the third temperature detection device is arranged on the muffler;
The controller is further configured to:
after the working time of the throttle valve in the first gear or the second gear reaches a preset time, periodically judging whether the difference value between the second current temperature and the third current temperature is smaller than a third preset value corresponding to the refrigerating state, and when the difference value is judged to be yes, adjusting the gear of the throttle valve to be a higher gear of the current gear until the compressor is stopped;
the second current temperature is the current temperature of the outlet of the freezing capillary tube obtained by the second temperature detection device, and the third current temperature is the current temperature of the muffler obtained by the third temperature detection device.
5. The mute control method of the refrigerator is characterized in that at least two compartments are arranged in the refrigerator body of the refrigerator, a refrigerating system of the refrigerator comprises a compressor, a condenser, a throttle valve, an electric valve and an evaporator group which are sequentially connected, the evaporator group comprises an evaporator branch of each compartment, and the electric valve is used for controlling the on-off of each evaporator branch; the method comprises the following steps:
each time a change of the refrigerating state of the refrigerator is detected, acquiring a first current temperature of a target detection compartment corresponding to the refrigerating state;
Judging whether the difference value between the set temperature of the target detection compartment and the first current temperature meets the temperature difference condition corresponding to the refrigeration state or not;
if yes, the gear of the throttle valve is adjusted to be a first gear corresponding to the refrigerating state;
if not, the gear of the throttle valve is adjusted to be a second gear corresponding to the refrigeration state; the opening degree is smaller as the gear of the throttle valve is higher, and the first gear is higher than the second gear;
wherein, the compartment in the box body comprises a refrigerating chamber and a freezing chamber;
the refrigerating state includes a first refrigerating state in which the freezing chamber and the refrigerating chamber are simultaneously refrigerated, and a second refrigerating state in which the freezing chamber is separately refrigerated;
the target detection compartments corresponding to the first refrigeration state and the second refrigeration state are the freezing chambers;
the temperature difference conditions corresponding to the first refrigeration state and the second refrigeration state are: the absolute value of the difference is smaller than a first preset value.
6. The mute control method of a refrigerator as claimed in claim 5, wherein the evaporator branch of the refrigerating chamber includes a refrigerating capillary tube, a refrigerating transition tube and a refrigerating evaporator;
The evaporator branch of the freezing chamber comprises a freezing capillary tube, a freezing transition tube, an air return tube and a freezing evaporator;
the first outlet of the electric valve is connected with the inlet of the refrigeration capillary tube; the outlet of the refrigeration capillary tube is connected with the inlet of the refrigeration evaporator through the refrigeration transition pipe; the outlet of the refrigeration evaporator is connected with the first inlet of the air return pipe; the second outlet of the electric valve is connected with the inlet of the freezing capillary tube; the outlet of the freezing capillary tube is connected with the second inlet of the air return pipe through the freezing transition pipe; the outlet of the air return pipe is connected with the inlet of the freezing evaporator; the outlet of the freezing evaporator is connected with the inlet of the compressor.
7. The mute control method of a refrigerator as claimed in claim 6, wherein the compartment in the refrigerator further comprises a variable temperature compartment;
the refrigeration state further includes a third refrigeration state in which the freezing chamber and the temperature changing chamber are simultaneously refrigerated;
the target detection compartment corresponding to the third refrigeration state comprises the freezing chamber and the temperature changing chamber;
the temperature difference condition corresponding to the third refrigeration state is as follows: the absolute value of the difference value corresponding to the freezing chamber is smaller than the first preset value, and the absolute value of the difference value corresponding to the temperature changing chamber is smaller than the second preset value;
The evaporator branch of the temperature changing chamber comprises a temperature changing capillary tube, a temperature changing transition tube and a temperature changing evaporator;
the third outlet of the electric valve is connected with the inlet of the variable-temperature capillary tube, the outlet of the variable-temperature capillary tube is connected with the inlet of the variable-temperature evaporator through the variable-temperature transition tube, and the outlet of the variable-temperature evaporator is connected with the third inlet of the muffler.
8. The mute control method of a refrigerator according to claim 6 or 7, further comprising:
after the working time of the throttle valve in the first gear or the second gear reaches a preset time, periodically judging whether the difference value between the second current temperature and the third current temperature is smaller than a third preset value corresponding to the refrigerating state, and when the difference value is judged to be yes, adjusting the gear of the throttle valve to be a higher gear of the current gear until the compressor is stopped;
the second current temperature is the current temperature at the outlet of the freezing capillary tube, and the third current temperature is the current temperature of the muffler.
CN202210115886.9A 2022-02-07 2022-02-07 Refrigerator and mute control method thereof Active CN114484990B (en)

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CN113932557B (en) * 2021-03-26 2023-07-18 海信冰箱有限公司 Refrigerator control method and device and refrigerator
CN114992943A (en) * 2022-05-30 2022-09-02 海信（山东）冰箱有限公司 Refrigerator and refrigeration system control method
CN115371351A (en) * 2022-08-24 2022-11-22 青岛海容商用冷链股份有限公司 Temperature control method and system for vending machine

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Country or region after: China

Address after: 266000 Haixin Avenue, Nancun Town, Pingdu City, Qingdao City, Shandong Province

Applicant after: Hisense refrigerator Co.,Ltd.

Address before: 266736 No. 8 Haixin Avenue, Nancun Town, Pingdu City, Qingdao City, Shandong Province

Applicant before: HISENSE (SHANDONG) REFRIGERATOR Co.,Ltd.

Country or region before: China

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