CN116412603A - Refrigerator and noise reduction control method thereof - Google Patents

Abstract

The invention discloses a refrigerator and a noise reduction control method thereof, comprising the following steps: the box body is internally provided with a compressor and a compartment; the compressor temperature detection device is arranged on the compressor and is used for detecting the temperature of the compressor; a compartment temperature detection device, which is arranged in the compartment and is used for detecting the temperature of the compartment; a controller for: when the refrigerator is in a stable running state, acquiring a first compartment temperature detected by the compartment temperature detection device and a first compressor temperature detected by the compressor temperature detection device; and when the first room temperature is smaller than or equal to a preset room temperature threshold, controlling the compressor to reduce the rotating speed if the first compressor temperature is larger than the preset first temperature threshold. By adopting the embodiment of the invention, the influence of the overhigh temperature of the compressor on the working level of the silencer in the compressor can be avoided, so that the silencer has an optimal silencing effect and high user experience.

Description

Refrigerator and noise reduction control method thereof

Technical Field

The invention relates to the technical field of refrigerators, in particular to a refrigerator and a noise reduction control method thereof.

Background

With the continuous development of technology, the living standard of people is increasingly improved, and the requirements on household appliances are also increasingly high. The refrigerator is used as a necessary life electric appliance and is in an uninterruptible working state all the year round, so that when a living room of a user is relatively close to the refrigerator, noise generated when the refrigerator operates can bring great influence to the life of the user.

The noise source of the refrigerator is mainly compressor noise during operation, the current refrigerator control method mainly controls the rotating speed of the compressor through the ambient temperature of the refrigerator, under the condition that the refrigerator is at a stable ambient temperature, the compressor always maintains a fixed rotating speed level, the temperature of the compressor can continuously rise, and therefore the phenomenon that the muffler in the compressor is unstable in action and has partial decline is caused, the noise reduction effect is finally affected, and the user experience is poor.

Disclosure of Invention

The embodiment of the invention aims to provide a refrigerator and a noise reduction control method thereof, which can enable a muffler inside a compressor to be maintained at an optimal level, so that the muffler has an optimal noise reduction effect and high user experience.

To achieve the above object, an embodiment of the present invention provides a refrigerator including:

the box body is internally provided with a compressor and a compartment;

the compressor temperature detection device is arranged on the compressor and is used for detecting the temperature of the compressor;

the compartment temperature detection device is arranged in the compartment and is used for detecting the compartment temperature of the compartment;

a controller for:

when the refrigerator is in a stable running state, acquiring a first compartment temperature detected by the compartment temperature detection device and a first compressor temperature detected by the compressor temperature detection device;

and when the first room temperature is smaller than or equal to a preset room temperature threshold, controlling the compressor to reduce the rotating speed if the first compressor temperature is larger than the preset first temperature threshold.

As an improvement of the above solution, the controller is further configured to:

and when the first room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

As an improvement of the above, before the refrigerator enters the steady operation state, the controller is further configured to:

acquiring a second compartment temperature detected by the compartment temperature detection device and a second compressor temperature detected by the compressor temperature detection device; when the second room temperature is smaller than or equal to the room temperature threshold, if the second compressor temperature is larger than a preset second temperature threshold, controlling the compressor to reduce the rotating speed; wherein the second temperature threshold is greater than the first temperature threshold.

As an improvement of the above solution, the controller is further configured to:

and when the second room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

As an improvement of the above solution, the controller is further configured to:

responding to a starting instruction, and controlling the compressor to stepwise increase the rotating speed to a preset target rotating speed so as to enable the compressor to operate according to the target rotating speed;

and in the process of controlling the stepped increase of the rotating speed of the compressor, if the temperature of the compressor detected by the temperature detection device of the compressor is greater than or equal to a preset temperature threshold value corresponding to the current rotating speed of the compressor, controlling the increase of the rotating speed of the compressor.

In order to achieve the above object, an embodiment of the present invention further provides a noise reduction control method for a refrigerator, where the refrigerator at least includes: the noise reduction control method of the refrigerator comprises the following steps of:

when the refrigerator is in a stable running state, acquiring a first compartment temperature detected by the compartment temperature detection device and a first compressor temperature detected by the compressor temperature detection device;

and when the first room temperature is smaller than or equal to a preset room temperature threshold, controlling the compressor to reduce the rotating speed if the first compressor temperature is larger than the preset first temperature threshold.

As an improvement of the above solution, the noise reduction control method of the refrigerator further includes:

and when the first room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

As an improvement of the above-mentioned scheme, before the refrigerator enters the steady operation state, the noise reduction control method of the refrigerator further includes:

acquiring a second compartment temperature detected by the compartment temperature detection device and a second compressor temperature detected by the compressor temperature detection device;

when the second room temperature is smaller than or equal to the room temperature threshold, if the second compressor temperature is larger than a preset second temperature threshold, controlling the compressor to reduce the rotating speed; wherein the second temperature threshold is greater than the first temperature threshold.

As an improvement of the above solution, the noise reduction control method of the refrigerator further includes:

and when the second room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

As an improvement of the above solution, the noise reduction control method of the refrigerator further includes:

responding to a starting instruction, and controlling the compressor to stepwise increase the rotating speed to a preset target rotating speed so as to enable the compressor to operate according to the target rotating speed;

and in the process of controlling the stepped increase of the rotating speed of the compressor, if the temperature of the compressor detected by the temperature detection device of the compressor is greater than or equal to a preset temperature threshold value corresponding to the current rotating speed of the compressor, controlling the increase of the rotating speed of the compressor.

Compared with the prior art, the refrigerator and the noise reduction control method thereof provided by the embodiment of the invention have the advantages that the first compartment temperature detected by the compartment temperature detection device and the first compressor temperature detected by the compressor temperature detection device are obtained when the refrigerator is in a stable running state by arranging the compressor temperature detection device and the compartment temperature detection device; and when the first room temperature is smaller than or equal to a preset room temperature threshold, controlling the compressor to reduce the rotating speed if the first compressor temperature is larger than the preset first temperature threshold. Therefore, the embodiment of the invention reduces the rotation speed of the compressor when the temperature of the compressor is too high, so that the continuous increase of the temperature of the compressor is avoided, the working level of the silencer in the compressor is further influenced, the silencer is maintained at the optimal level, the optimal silencing effect is maintained, the noise reduction control is more flexible, and the actual requirements are met. And the noise generated when the compressor runs is reduced along with the reduction of the rotation speed of the compressor, so that the noise reduction effect is further improved.

Drawings

Fig. 1 is a perspective view of a refrigerator according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a refrigeration system in a refrigerator according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a blower provided in an embodiment of the present invention;

fig. 4 is a schematic diagram of a circuit connection structure of a refrigerator according to an embodiment of the present invention;

FIG. 5 is a first workflow diagram of a controller provided by an embodiment of the present invention;

FIG. 6 is a second workflow diagram of a controller provided by an embodiment of the present invention;

FIG. 7 is a third workflow diagram of a controller provided by an embodiment of the present invention;

FIG. 8 is a fourth operational flow diagram of a controller provided by an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 10 is a flowchart of a noise reduction control method of a refrigerator according to an embodiment of the present invention;

100 parts of a refrigerator; 101. a case; 102. a door body; 200. a client; 300. a router; 400. a cloud server; 1. a compressor; 2. a condenser; 3. an anti-condensation pipe; 4. drying the filter; 5. a capillary tube; 6. an evaporator; 7. a gas-liquid separator; 8. a blower; 9. a compressor temperature detecting device; 10. a compartment temperature detection device; 11. and a controller.

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.

Referring to fig. 1, fig. 1 is a perspective view of one embodiment of a refrigerator according to the present application. The refrigerator 100 of the present embodiment has an approximately rectangular parallelepiped shape, the refrigerator 100 includes a case 101 defining a storage space and a plurality of door bodies 102 provided at an opening of the case 101, wherein the door bodies 102 include a door body 102 housing located outside the case 101, a door body 102 liner located inside the case 101, an upper end cover, a lower end cover, and a heat insulating layer located between the door body 102 housing, the door body 102 liner, the upper end cover, the lower end cover; typically, the insulating layer is filled with a foaming material. The cabinet 101 is provided with a chamber including a component storage chamber for placing components in the refrigerator, such as a compressor, etc., and a storage space for storing food, etc. Wherein, the compressor is internally provided with a silencer, the storage space can be divided into a plurality of compartments, and the compartments can be configured into a refrigerating chamber, a freezing chamber and a temperature changing chamber (also called fresh-keeping chamber) according to different purposes. Each compartment corresponds to one or more doors, for example, in fig. 1, the upper storage compartment is provided with a double door. The door body can be pivoted at the opening of the box body and can also be opened in a drawer mode, so that drawer type storage is realized.

Referring to fig. 2 to 3, the refrigeration system includes a compressor 1, a condenser 2, an anti-condensation pipe 3, a dry filter 4, a capillary tube 5, an evaporator 6, and a gas-liquid separator 7. The working processes of the refrigeration system comprise a compression process, a condensation process, a throttling process and an evaporation process.

The compression process comprises the following steps: when the power line of the refrigerator is inserted and the contact of the temperature controller is connected, the compressor 1 starts to work, the low-temperature and low-pressure refrigerant is sucked by the compressor 1, compressed into high-temperature and high-pressure overheat gas in the cylinder of the compressor 1 and then discharged to the condenser 2; the condensation process is as follows: the high-temperature and high-pressure refrigerant gas radiates heat through the condenser 2, the temperature is continuously reduced, the refrigerant gas is gradually cooled into normal-temperature and high-pressure saturated steam, the saturated steam is further cooled into saturated liquid, the temperature is not reduced any more, the temperature at the moment is called as condensing temperature, and the pressure of the refrigerant in the whole condensing process is almost unchanged; the throttling process is as follows: the condensed refrigerant saturated liquid is filtered by a dry filter 4 to remove moisture and impurities, and then flows into a capillary tube 5, throttling and depressurization are carried out through the capillary tube, and the refrigerant is changed into normal-temperature and low-pressure wet vapor; the evaporation process is as follows: the wet vapor with normal temperature and low pressure starts to absorb heat in the evaporator 6 for vaporization, so that the temperature of the evaporator and the surrounding temperature are reduced, the refrigerant is changed into low-temperature and low-pressure gas, the refrigerant coming out of the evaporator 6 returns to the compressor 1 again after passing through the gas-liquid separator 7, the process is repeated, and the heat in the refrigerator is transferred into the air outside the refrigerator, so that the purpose of refrigeration is realized. The fan 8 makes the air continuously enter the fins of the evaporator 6 to exchange heat, and simultaneously sends the air cooled by the heat released by the evaporator 6 to the refrigerating chamber and the freezing chamber through the air duct, so that the air in the storing chamber continuously circulates and flows, and the purpose of reducing the temperature is achieved.

Referring to fig. 4, fig. 4 is a schematic diagram of a circuit connection structure of a refrigerator according to an embodiment of the present invention, and the refrigerator further includes:

a compressor temperature detecting device 9 provided in the compressor for detecting a temperature of the compressor; for example, a temperature sensor is provided on the compressor for detecting the surface temperature of the compressor. It will be appreciated that the temperature of the compressor will be affected by the overall compressor compartment, not only by the temperature rise caused by the operation of the compressor itself, but also by the fan, evaporation pan etc. in the compartment, for example, when the fan blows air towards the compressor, the temperature of the compressor will also be reduced, so that the invention actually considers not only the effect of the operation of the compressor itself, but also the effect of other equipment on the compressor, and can ensure that the muffler is at the optimal working level while maximally ensuring the refrigeration function of the refrigerator.

A compartment temperature detecting device 10 provided in the compartment for detecting a temperature of the compartment; for example, a temperature sensor is provided on the liner wall of the compartment for detecting the compartment temperature.

And a controller 11, wherein the controller 11 is connected with the compressor temperature detecting device 9 and is used for receiving the temperature of the compressor detected by the compressor temperature detecting device 9, and the controller 11 is also connected with the compartment temperature detecting device 10 and is used for receiving the temperature of the compartment detected by the compartment temperature detecting device 10. The controller 11 is configured to:

when the refrigerator is in a stable running state, acquiring a first compartment temperature detected by the compartment temperature detection device and a first compressor temperature detected by the compressor temperature detection device;

and when the first room temperature is smaller than or equal to a preset room temperature threshold, controlling the compressor to reduce the rotating speed if the first compressor temperature is larger than the preset first temperature threshold.

In an alternative embodiment, the controller is further configured to:

and when the first room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

It can be understood that when the refrigerator is in a stable operation state, the first compartment temperature detected by the compartment temperature detecting device and the first compressor temperature detected by the compressor temperature detecting device can be continuously or periodically obtained, when the first compartment temperature is less than or equal to a preset compartment temperature threshold and the first compressor temperature is greater than a preset first temperature threshold, the compressor is controlled to reduce the rotation speed, and when the first compartment temperature is greater than the compartment temperature threshold, the compressor is controlled to reduce the rotation speed.

Referring to fig. 5, fig. 5 is a first workflow diagram of a controller according to an embodiment of the present invention, where the controller is configured to perform steps S11 to S15:

s11, when the refrigerator is in a stable running state, acquiring a first compartment temperature detected by the compartment temperature detection device and a first compressor temperature detected by the compressor temperature detection device, and entering a step S12;

s12, judging whether the first room temperature is smaller than or equal to a preset room temperature threshold, if so, entering a step S13, and if not, entering a step S15;

s13, judging whether the temperature of the first compressor is greater than a preset first temperature threshold, if so, entering a step S14, and if not, returning to the step S13;

s14, controlling the compressor to reduce the rotating speed.

S15, controlling the compressor to increase the rotating speed.

It should be noted that the operation state of the refrigerator may be divided into various types, such as a first power-on state, a steady operation state, and a defrosting recovery period state. The stable operation state refers to a state when the power or the temperature of the refrigerator is stable, and the defrosting recovery period state refers to a state from the end of defrosting to the recovery of normal refrigeration.

Generally, when in user mode, the refrigerator is in a cool box state, so the refrigerator enters a steady operation state immediately after the compressor is started, at this time, the compressor is controlled to operate at a target rotation speed set in user mode, and the process directly enters step S11; when the refrigerator is in the first power-on mode, the refrigerator is in a hot box state, so that the compressor needs to operate at a high rotating speed at the beginning, the refrigerator is in the first power-on state at the moment, and then the refrigerator enters a stable operation state along with the stability of the refrigerator and then enters a step S11; when the refrigerator is in the defrosting recovery mode, the rotation speed of the compressor is also high, and is in the defrosting recovery period state, and the refrigerator enters the stable running state and then enters the step S11.

Specifically, when the refrigerator is in a stable running state, a first compartment temperature currently detected by the compartment temperature detection device and a first compressor temperature currently detected by the compressor temperature detection device are obtained; in order to ensure the refrigerating function of the refrigerator, under the condition that the temperature of the first compartment is smaller than or equal to a preset compartment temperature threshold value, judging whether the temperature of the first compressor is larger than the preset first temperature threshold value, if so, indicating that the temperature of the compressor is too high, the silencing effect of the silencer can be influenced, so that the rotating speed of the compressor is controlled to be reduced, the temperature of the compressor is reduced, the silencer works at the optimal level, and meanwhile, along with the reduction of the rotating speed of the compressor, the noise generated during the operation of the compressor is reduced, and the noise reduction effect is further improved. The temperature of the compressor is too high, which means that the energy consumption of the refrigerator is too high, and the rotating speed of the compressor is reduced at the moment, so that the energy consumption of the refrigerator can be optimized, and the compressor can be prevented from running at a high level all the time, and the service life is prevented from being influenced.

In an alternative embodiment, the controller is further configured to, prior to the refrigerator entering the steady state operation:

acquiring a second compartment temperature detected by the compartment temperature detection device and a second compressor temperature detected by the compressor temperature detection device;

when the second room temperature is smaller than or equal to the room temperature threshold, if the second compressor temperature is larger than a preset second temperature threshold, controlling the compressor to reduce the rotating speed; wherein the second temperature threshold is greater than the first temperature threshold.

In an alternative embodiment, the controller is further configured to:

and when the second room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

It can be understood that, before the refrigerator enters the stable operation state, the second compartment temperature detected by the compartment temperature detecting device and the second compressor temperature detected by the compressor temperature detecting device may be continuously or periodically obtained, when the second compartment temperature is less than or equal to the compartment temperature threshold, and the second compressor temperature is greater than a preset second temperature threshold, the compressor is controlled to reduce the rotation speed, and when the second compartment temperature is greater than the compartment temperature threshold, the compressor is controlled to increase the rotation speed.

Referring to fig. 6, fig. 6 is a second workflow diagram of a controller according to an embodiment of the present invention, the controller being configured to perform steps S21 to S25:

s21, when the refrigerator is in a first power-on state, acquiring a second compartment temperature detected by the compartment temperature detection device and a second compressor temperature detected by the compressor temperature detection device, and entering a step S22;

s22, judging whether the second room temperature is smaller than or equal to a preset room temperature threshold, if so, entering a step S25, and if not, entering a step S23;

s23, judging whether the temperature of the second compressor is greater than a preset second temperature threshold, if so, entering a step S24, and if not, returning to the step S23;

s24, controlling the compressor to reduce the rotating speed.

S25, controlling the compressor to increase the rotating speed.

Referring to fig. 7, fig. 7 is a third workflow diagram of a controller according to an embodiment of the present invention, the controller being configured to perform steps S31 to S35:

s31, when the refrigerator is in a defrosting recovery period state, acquiring a second compartment temperature detected by the compartment temperature detection device and a second compressor temperature detected by the compressor temperature detection device, and entering a step S34;

s32, judging whether the second room temperature is smaller than or equal to a preset room temperature threshold, if so, entering a step S35, and if not, entering a step S33;

s33, judging whether the temperature of the second compressor is greater than a preset second temperature threshold, if so, entering a step S34, and if not, returning to the step S33;

s34, controlling the compressor to reduce the rotating speed.

S35, controlling the compressor to increase the rotating speed.

Specifically, when the refrigerator is operated, the operation state before the refrigerator enters the stable operation state may be a first power-on state or a defrosting recovery period state. When the refrigerator is in a first power-on state/defrosting recovery period state, the compressor needs to run at a high speed, at the moment, the compressor runs at a high speed according to a target rotation speed in the first power-on mode/defrosting recovery mode, and the steps S21-S25/S31-S35 are carried out, and as the refrigerator is stabilized, the refrigerator enters a stable running state, the judgment of the temperature of the compressor is more and more tight, and the steps S11-S15 can be carried out.

It can be understood that when the refrigerator is running, whether the refrigerator is in the first power-on state/the steady running state/the defrosting recovery period state can be judged by the running time of the compressor, for example, when the total running time of the compressor is judged to reach the preset total running time, the refrigerator is judged to be in the steady running state, and other methods are also adopted to judge the running state of the refrigerator, and the specific limitation is not adopted here.

In an alternative embodiment, the controller is further configured to:

responding to a starting instruction, and controlling the compressor to stepwise increase the rotating speed to a preset target rotating speed so as to enable the compressor to operate according to the target rotating speed;

and in the process of controlling the stepped increase of the rotating speed of the compressor, if the temperature of the compressor detected by the temperature detection device of the compressor is greater than or equal to a preset temperature threshold value corresponding to the current rotating speed of the compressor, controlling the increase of the rotating speed of the compressor.

Referring to fig. 8, fig. 8 is a fourth operation flowchart of the controller according to the embodiment of the present invention, the controller is configured to perform steps S41 to S45:

s41, responding to a starting instruction, and entering step S42;

s32, controlling the compressor to increase the primary rotating speed, and entering step S43;

s43, judging whether the current rotation speed of the compressor reaches a preset target rotation speed, if so, entering a step S44, and if not, entering a step S45;

s44, controlling the compressor to run according to the current rotation speed;

s45, judging whether the current temperature of the compressor is greater than or equal to a preset temperature threshold corresponding to the current rotation speed of the compressor, returning to the step S42 if yes, and returning to the step S45 if no.

It will be appreciated that the instantaneous start-stop of the compressor is typically a direct stop/start in conventional control, with no buffering in between. In the embodiment of the invention, control is performed according to the temperature of the compressor, n temperature thresholds are designed, the step rotation speeds of n corresponding temperature thresholds are designed, when the compressor reaches the corresponding temperature threshold under the current rotation speed condition, the step-up operation is allowed, and then the corresponding temperature thresholds are judged again until the target rotation speed is reached. The embodiment of the invention can provide a mild start of the compressor, and has certain benefits in terms of service life and noise.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a communication system according to an embodiment of the present invention; the refrigerator 100 establishes a data connection with the client 200 through the router 300 or the cloud server 400. When the refrigerator 100 and the client 200 communicate through the router 300, the refrigerator 100 and the client 200 are closely spaced, and a user can view the operation condition of the refrigerator or the storage condition of food materials placed in a kitchen in a living room or a room. When the refrigerator 100 and the client 200 communicate through the cloud server 400, the refrigerator 100 and the client 200 are far apart, and a user can perform data interaction with the refrigerator 100 through an APP installed in the client 200, and meanwhile, remote control of the refrigerator 100 can be realized.

Referring to fig. 10, fig. 10 is a flowchart of a noise reduction control method of a refrigerator according to an embodiment of the present invention, where the refrigerator includes at least: the noise reduction control method of the refrigerator comprises the following steps of:

s1, when the refrigerator is in a stable running state, acquiring a first compartment temperature detected by the compartment temperature detection device and a first compressor temperature detected by the compressor temperature detection device;

and S2, when the first room temperature is smaller than or equal to a preset room temperature threshold, controlling the compressor to reduce the rotating speed if the first compressor temperature is larger than the preset first temperature threshold.

It should be noted that the operation state of the refrigerator may be divided into various types, such as a first power-on state, a steady operation state, and a defrosting recovery period state. The stable operation state refers to a state when the power or the temperature of the refrigerator is stable, and the defrosting recovery period state refers to a state from the end of defrosting to the recovery of normal refrigeration.

Generally, when the refrigerator is in a user mode, the refrigerator is in a cool box state, so that the refrigerator enters a stable running state when the compressor is just started, at the moment, the compressor is controlled to run according to a target rotating speed set in the user mode, and whether the temperature of the compressor is greater than the first temperature threshold value is judged under the condition that the temperature of the compartment is met; when the refrigerator is in the first power-on mode, the refrigerator is in a hot box state, so that the compressor needs to operate at a high rotating speed at the beginning, the refrigerator is in the first power-on state, and whether the temperature of the compressor is higher than the first temperature threshold value is judged under the condition that the temperature of the intermediate room is met after the refrigerator enters a stable operation state along with the stability of the refrigerator; when the refrigerator is in the defrosting recovery mode, the rotating speed of the compressor is also high, the refrigerator is in a defrosting recovery period state, and after the refrigerator is in a stable running state, whether the temperature of the compressor is larger than the first temperature threshold value is judged under the condition that the temperature of the intermediate room is met.

Specifically, when the refrigerator is in a stable running state, a first compartment temperature currently detected by the compartment temperature detection device and a first compressor temperature currently detected by the compressor temperature detection device are obtained; in order to ensure the refrigerating function of the refrigerator, under the condition that the temperature of the first compartment is smaller than or equal to a preset compartment temperature threshold value, judging whether the temperature of the first compressor is larger than the preset first temperature threshold value, if so, indicating that the temperature of the compressor is too high, the silencing effect of the silencer can be influenced, so that the rotating speed of the compressor is controlled to be reduced, the temperature of the compressor is reduced, the silencer works at the optimal level, and meanwhile, along with the reduction of the rotating speed of the compressor, the noise generated during the operation of the compressor is reduced, and the noise reduction effect is further improved. The temperature of the compressor is too high, which means that the energy consumption of the refrigerator is too high, and the rotating speed of the compressor is reduced at the moment, so that the energy consumption of the refrigerator can be optimized, and the compressor can be prevented from running at a high level all the time, and the service life is prevented from being influenced.

Preferably, the noise reduction control method of the refrigerator further includes:

and when the first room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

It can be understood that when the refrigerator is in a stable operation state, the first compartment temperature detected by the compartment temperature detecting device and the first compressor temperature detected by the compressor temperature detecting device can be continuously or periodically obtained, when the first compartment temperature is less than or equal to a preset compartment temperature threshold and the first compressor temperature is greater than a preset first temperature threshold, the compressor is controlled to reduce the rotation speed, and when the first compartment temperature is greater than the compartment temperature threshold, the compressor is controlled to reduce the rotation speed.

Preferably, before the refrigerator enters the stable operation state, the noise reduction control method of the refrigerator further includes:

acquiring a second compartment temperature detected by the compartment temperature detection device and a second compressor temperature detected by the compressor temperature detection device;

when the second room temperature is smaller than or equal to the room temperature threshold, if the second compressor temperature is larger than a preset second temperature threshold, controlling the compressor to reduce the rotating speed; wherein the second temperature threshold is greater than the first temperature threshold.

Specifically, when the refrigerator is operated, the operation state before the refrigerator enters the stable operation state may be a first power-on state or a defrosting recovery period state. When the refrigerator is in a first power-on state/defrosting recovery period state, the compressor needs to run at a high speed, at the moment, the compressor runs at a high speed according to a target rotating speed in the first power-on mode/defrosting recovery mode, whether the temperature of the compressor is larger than the second temperature threshold value is judged under the condition that the temperature of the intermediate room is met, the judgment of the temperature of the compressor is tighter along with the stability of the refrigerator, and whether the temperature of the compressor is larger than the first temperature threshold value is judged under the condition that the temperature of the intermediate room is met.

It can be understood that when the refrigerator is running, whether the refrigerator is in the first power-on state/the steady running state/the defrosting recovery period state can be judged by the running time of the compressor, for example, when the total running time of the compressor is judged to reach the preset total running time, the refrigerator is judged to be in the steady running state, and other methods are also adopted to judge the running state of the refrigerator, and the specific limitation is not adopted here.

Preferably, the noise reduction control method of the refrigerator further includes:

and when the second room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

It can be understood that, before the refrigerator enters the stable operation state, the second compartment temperature detected by the compartment temperature detecting device and the second compressor temperature detected by the compressor temperature detecting device may be continuously or periodically obtained, when the second compartment temperature is less than or equal to the compartment temperature threshold, and the second compressor temperature is greater than a preset second temperature threshold, the compressor is controlled to reduce the rotation speed, and when the second compartment temperature is greater than the compartment temperature threshold, the compressor is controlled to increase the rotation speed.

Preferably, the noise reduction control method of the refrigerator further includes:

responding to a starting instruction, and controlling the compressor to stepwise increase the rotating speed to a preset target rotating speed so as to enable the compressor to operate according to the target rotating speed;

and in the process of controlling the stepped increase of the rotating speed of the compressor, if the temperature of the compressor detected by the temperature detection device of the compressor is greater than or equal to a preset temperature threshold value corresponding to the current rotating speed of the compressor, controlling the increase of the rotating speed of the compressor.

It will be appreciated that the instantaneous start-stop of the compressor is typically a direct stop/start in conventional control, with no buffering in between. In the embodiment of the invention, control is performed according to the temperature of the compressor, n temperature thresholds are designed, the step rotation speeds of n corresponding temperature thresholds are designed, when the compressor reaches the corresponding temperature threshold under the current rotation speed condition, the step-up operation is allowed, and then the corresponding temperature thresholds are judged again until the target rotation speed is reached. The embodiment of the invention can provide a mild start of the compressor, and has certain benefits in terms of service life and noise.

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 (10)

1. A refrigerator, comprising:

the box body is internally provided with a compressor and a compartment;

the compressor temperature detection device is arranged on the compressor and is used for detecting the temperature of the compressor;

a compartment temperature detection device, which is arranged in the compartment and is used for detecting the temperature of the compartment;

a controller for:

when the refrigerator is in a stable running state, acquiring a first compartment temperature detected by the compartment temperature detection device and a first compressor temperature detected by the compressor temperature detection device;

and when the first room temperature is smaller than or equal to a preset room temperature threshold, controlling the compressor to reduce the rotating speed if the first compressor temperature is larger than the preset first temperature threshold.

2. The refrigerator of claim 1, wherein the controller is further configured to:

and when the first room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

3. The refrigerator of claim 1, wherein the controller is further configured to, prior to the refrigerator entering the steady state operation:

acquiring a second compartment temperature detected by the compartment temperature detection device and a second compressor temperature detected by the compressor temperature detection device;

when the second room temperature is smaller than or equal to the room temperature threshold, if the second compressor temperature is larger than a preset second temperature threshold, controlling the compressor to reduce the rotating speed; wherein the second temperature threshold is greater than the first temperature threshold.

4. The refrigerator of claim 3, wherein the controller is further configured to:

and when the second room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

5. The refrigerator of claim 1, wherein the controller is further configured to:

responding to a starting instruction, and controlling the compressor to stepwise increase the rotating speed to a preset target rotating speed so as to enable the compressor to operate according to the target rotating speed;

and in the process of controlling the stepped increase of the rotating speed of the compressor, if the temperature of the compressor detected by the temperature detection device of the compressor is greater than or equal to a preset temperature threshold value corresponding to the current rotating speed of the compressor, controlling the increase of the rotating speed of the compressor.

6. A noise reduction control method of a refrigerator, the refrigerator comprising at least: the noise reduction control method of the refrigerator comprises the following steps of:

when the refrigerator is in a stable running state, acquiring a first compartment temperature detected by the compartment temperature detection device and a first compressor temperature detected by the compressor temperature detection device;

and when the first room temperature is smaller than or equal to a preset room temperature threshold, controlling the compressor to reduce the rotating speed if the first compressor temperature is larger than the preset first temperature threshold.

7. The noise reduction control method of a refrigerator as claimed in claim 6, further comprising:

and when the first room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

8. The noise reduction control method of a refrigerator according to claim 6, wherein the noise reduction control method of a refrigerator further comprises, before the refrigerator enters the steady operation state:

acquiring a second compartment temperature detected by the compartment temperature detection device and a second compressor temperature detected by the compressor temperature detection device;

when the second room temperature is smaller than or equal to the room temperature threshold, if the second compressor temperature is larger than a preset second temperature threshold, controlling the compressor to reduce the rotating speed; wherein the second temperature threshold is greater than the first temperature threshold.

9. The noise reduction control method of a refrigerator as claimed in claim 8, further comprising:

and when the second room temperature is larger than the room temperature threshold, controlling the compressor to increase the rotating speed.

10. The noise reduction control method of a refrigerator as claimed in claim 6, further comprising:

responding to a starting instruction, and controlling the compressor to stepwise increase the rotating speed to a preset target rotating speed so as to enable the compressor to operate according to the target rotating speed;

and in the process of controlling the stepped increase of the rotating speed of the compressor, if the temperature of the compressor detected by the temperature detection device of the compressor is greater than or equal to a preset temperature threshold value corresponding to the current rotating speed of the compressor, controlling the increase of the rotating speed of the compressor.

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