CN114739086B - Noise testing method for air-cooled variable frequency refrigerator - Google Patents
Noise testing method for air-cooled variable frequency refrigerator Download PDFInfo
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- CN114739086B CN114739086B CN202210458728.3A CN202210458728A CN114739086B CN 114739086 B CN114739086 B CN 114739086B CN 202210458728 A CN202210458728 A CN 202210458728A CN 114739086 B CN114739086 B CN 114739086B
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- 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
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
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- 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
- F25D23/00—General constructional features
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- 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
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/01—Timing
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/111—Fan speed control of condenser fans
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- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
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- 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
- F25D2600/02—Timing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The invention discloses a noise testing method of an air-cooled variable frequency refrigerator, and relates to the technical field of refrigerators. The method comprises determining the parts which can generate noise in the refrigerator, and then determining the running time of a noise test program; noise test program preparation phase; acquiring the operation noise frequency of the air door and the electric valve; acquiring operation noise values of a refrigerating fan and a condenser fan; acquiring an operation noise value of the compressor; acquiring an operation noise value when a compressor, a refrigeration fan and a condenser fan are combined to operate; the refrigerator ends the noise test. The invention can quickly determine various noises which are possibly generated in the operation of the refrigerator by testing the noise values generated in the operation of different parts in stages, thereby better guiding the product to be improved and having higher market application value.
Description
Technical Field
The invention belongs to the technical field of refrigerators, and particularly relates to a noise test method for an air-cooled frequency conversion refrigerator.
Background
In recent years, with the upgrading of the structure of the refrigerator products and the progress of the frequency conversion technology, the market share of the frequency conversion refrigerator is more and more, and the frequency conversion products are gradually replacing the original fixed frequency refrigerator. The frequency conversion refrigerator has the other main technical advantage of energy conservation and fresh keeping, namely silence. However, after each refrigerator manufacturer releases a variable frequency product, the noise complaint amount of part of the product is higher than that of the traditional fixed frequency product, and the main reasons are as follows: 1) The frequency conversion compressor and the frequency conversion fan are applied to a plurality of rotating speeds, the noise matching difficulty of the whole refrigerator is increased, and resonance at partial rotating speeds possibly exists; however, due to the influences of high noise testing efficiency, long testing time and the like, noise verification is not performed on all rotating speeds in the design stage and the production sampling test. 2) In the using process of the refrigerator, besides steady-state noise, air door operation noise, electric valve operation noise, compressor starting noise, various unsteady-state noises generated in the speed increasing and reducing processes of the compressor, reflux sound of a refrigerant after the compressor is stopped and the like are also included, the noises are not in the test range specified by the national standard, and a unified method is not established for effective detection by each enterprise.
Disclosure of Invention
The invention aims to provide a noise test method of an air-cooled variable frequency refrigerator, and aims to solve the technical problems in the background technology.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a noise test method of an air-cooled variable frequency refrigerator, which comprises the following steps:
step one, determining parts capable of generating noise in a refrigerator, wherein the parts comprise a compressor, a refrigeration fan, a condenser fan, an air door and an electric valve; then determining the running time of the noise test program;
step two, preparing a noise test program with duration of T 1 min; in the stage, all the air doors are kept in an open state, and the rest loads stop running;
step three, obtaining the operation noise frequency of the air door and the electric valve, wherein the duration is T 2 min; firstly, performing closing and opening actions on all air doors in turn, then switching all electric valves into a refrigeration state in turn, and recording the noise value in each operation state;
step four, obtaining the operation noise values of the refrigeration fan and the condenser fan, wherein the duration time is T 3 min; firstly, operating the rotating speed of a refrigerating fan in a mode of gradually increasing the speed from the lowest speed to the highest speed and gradually decreasing the speed from the highest speed to the lowest speed, then operating the rotating speed of a condenser fan in a mode of gradually increasing the speed from the lowest speed to the highest speed and gradually decreasing the speed from the highest speed to the lowest speed, and recording the noise value in each operating state;
step five, obtaining the running noise value of the compressor, wherein the duration time is T 4 min; operating the rotating speed of the compressor in a mode of gradually increasing the speed from the lowest speed to the highest speed and gradually decreasing the speed from the highest speed to the lowest speed, and recording the noise value in each operating state;
step six, acquiring an operation noise value when the compressor, the refrigeration fan and the condenser fan are operated in a combined mode, wherein the duration time is T 5 min; running a compressor, a refrigeration fan and a condenser fan at corresponding rotating speeds, and recording noise values in each running state;
and step seven, after the running of all the states is finished, the refrigerator finishes the noise test.
As a preferred technical solution of the present invention, in the third step, the closing time length of a single air door is t 1 s, on duration t 2 s。
As a preferred technical solution of the present invention, in the fourth step, the refrigeration fan has X target rotation speed values, where X is a positive integer; the refrigerating fan operates at a single target rotating speed value t 3 s, and the duration of the single refrigerating fan for completing one speed increasing and speed reducing is (2X-1) t 3 s; stopping operation t after the single refrigeration fan finishes primary speed increasing and speed reducing 4 And s, entering the next noise testing link.
As a preferred technical solution of the present invention, in the fourth step, the condenser fan has Y target rotation speed values, and Y is a positive integer; the condenser fan operates at a single target speed value t 5 s, and the duration of the condenser fan completing one speed increasing and speed decreasing is (2Y-1) t 5 s; the condenser fan stops running t after finishing primary speed increasing and speed reducing 6 And s, then entering a noise test ring section of the compressor.
As a preferred technical solution of the present invention, in the fifth step, the compressor has Z target rotation speed values, where Z is a positive integer; the compressor is operated at a single target speed value t 7 s, and the duration of one time of speed increase and speed decrease of the compressor is at least (2Z-1) t 7 s。
As a preferred technical scheme of the present invention, in the sixth step, the compressor, the refrigeration fan and the condenser fan operate at corresponding rotation speeds in the open state of all the dampers; and then, under the condition that all the air doors are closed, the compressor, the refrigerating fan and the condenser fan operate at the corresponding rotating speeds again.
As a preferred technical scheme of the present invention, in the sixth step, the compressor, the refrigeration fan and the condenser fan are operated at t under the corresponding target rotating speed value 8 s。
The invention has the following beneficial effects:
the invention determines the parts which can generate noise in the refrigerator, and then determines the running time of the noise test program; the method comprises the following steps of preparing a noise test program, obtaining the operation noise frequency of an air door and an electric valve, obtaining the operation noise values of a refrigeration fan and a condenser fan, obtaining the operation noise value of a compressor, obtaining the operation noise value of the compressor, the refrigeration fan and the condenser fan when the compressor, the refrigeration fan and the condenser fan are operated in a combined mode, thus realizing the purpose of testing the noise values generated when different parts are operated in a staged mode, being capable of rapidly determining various noises possibly generated in the operation of a refrigerator, better guiding products to be improved, simultaneously obtaining the sound source frequency characteristics when each noise source operates independently, avoiding the interference caused by other sound sources, better judging the noise matching effect of each part, and having higher market application value.
Of course, it is not necessary for any product to practice the invention to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a noise testing method of an air-cooled inverter refrigerator according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The specific embodiment is as follows:
referring to fig. 1, the invention relates to a noise testing method for an air-cooled frequency conversion refrigerator, comprising the following steps:
step one, determining parts capable of generating noise in a refrigerator, wherein the parts comprise a compressor, a refrigeration fan, a condenser fan, an air door and an electric valve, and the air door comprises a refrigeration air door and a temperature-changing air door; then determining the running time of the noise test program;
step two, a noise test program preparation stage, wherein the duration is 2min; in the stage, all air doors are kept in an open state, and the operation of other loads such as a variable frequency compressor, a refrigeration fan, a condenser fan, an electric valve and the like is stopped;
step three, obtaining the operation noise frequency of the air door and the electric valve, wherein the duration time is 3min; firstly, closing and opening all the air doors in turn for one time, namely the closing time of the refrigerating air door 40s → the opening time of the refrigerating air door 40s → the closing time of the variable temperature air door 40s → the opening time of the variable temperature air door 40s; then all the electric valves are switched to a refrigerating state in turn, and each switching action of the electric valves consumes 1s, namely the electric valves respectively act once according to refrigerating 5s, temperature changing 5s and freezing 5 s; recording the noise value in each running state;
step four, obtaining the operation noise values of the refrigerating fan and the condenser fan, wherein the duration time is 8min; the refrigerating fan is provided with 12 target rotating speed values, each target rotating speed value corresponds to a gear, the gears are divided by 1-12, the rotating speed of the refrigerating fan is operated according to the mode of gradually increasing the speed from the lowest speed to the highest speed and gradually decreasing the speed from the highest speed to the lowest speed, the refrigerating fan operates for 10s under a single target rotating speed value, and the duration time of completing one-time speed increase and speed decrease of the single refrigerating fan is 230s; stopping running for 10s after the single refrigerating fan finishes primary speed increasing and speed reducing, and then entering a noise testing link of a condenser fan; the condenser fan is provided with 12 target rotating speed values, each target rotating speed value corresponds to one gear, and the gears are divided by 1-12; the rotating speed of a condenser fan is operated in a mode of gradually increasing the speed from the lowest speed to the highest speed and gradually decreasing the speed from the highest speed to the lowest speed, the condenser fan operates for 10s under a single target rotating speed value, and the duration of the condenser fan completing one-time speed increase and speed decrease is 230s; after finishing primary speed increasing and speed reducing, the condenser fan stops running for 10s, and then enters a compressor noise testing link; recording the noise value in each running state;
step five, acquiring the operation noise value of the compressor, wherein the duration is 10min; the compressor is provided with 15 target rotating speed values, each target rotating speed value corresponds to one gear, the gears are divided by 1-15, the rotating speed of the compressor is operated according to the mode of gradually increasing the speed from the lowest speed to the highest speed and gradually decreasing the speed from the highest speed to the lowest speed, the compressor is operated for 40s except for the target rotating speed value corresponding to the gear 1, the target rotating speed values corresponding to the other gears are all operated for 20s, and the duration time of completing one speed increase and speed decrease of the compressor is at least 1160s; recording the noise value in each running state;
step six, acquiring an operation noise value when the compressor, the refrigeration fan and the condenser fan are operated in a combined mode, wherein the duration time is 31min; under the state that the refrigeration air door and the variable temperature air door are opened, the compressor, the refrigeration fan and the condenser fan operate according to corresponding rotating speeds, and the corresponding rotating speed relation between the compressor refrigeration fan and the condenser fan is shown in the following table:
then under the state that the refrigeration air door and the variable temperature air door are closed, the compressor, the refrigeration fan and the condenser fan operate according to the corresponding rotating speed again, and the corresponding rotating speed relation between the compressor refrigeration fan and the condenser fan is shown as the following table:
the running time of the compressor at the target rotating speed value corresponding to the single gear is 60s; recording noise values in each running state;
and step seven, after the running of all the states is finished, the refrigerator finishes the noise test.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A noise test method of an air-cooled frequency conversion refrigerator is characterized by comprising the following steps:
step one, determining parts capable of generating noise in a refrigerator, wherein the parts comprise a compressor, a refrigeration fan, a condenser fan, an air door and an electric valve; then determining the running time of the noise test program;
step two, preparing a noise test program with duration of T 1 min; in the stage, all the air doors are kept in an open state, and the rest loads stop running;
step three, obtaining the operation noise frequency of the air door and the electric valve, wherein the duration time is T 2 min; firstly, performing closing and opening actions on all air doors in turn, then switching all electric valves into a refrigeration state in turn, and recording the noise value in each operation state;
step four, obtaining the operation noise values of the refrigerating fan and the condenser fan, wherein the duration is T 3 min; firstly, makeThe rotating speed of the air cooler is operated in a mode of gradually increasing the speed from the lowest speed to the highest speed and gradually decreasing the speed from the highest speed to the lowest speed, then the rotating speed of the condenser fan is operated in a mode of gradually increasing the speed from the lowest speed to the highest speed and gradually decreasing the speed from the highest speed to the lowest speed, and the noise value in each operating state is recorded;
step five, obtaining the running noise value of the compressor, wherein the duration time is T 4 min; operating the rotating speed of the compressor in a mode of gradually increasing the speed from the lowest speed to the highest speed and gradually decreasing the speed from the highest speed to the lowest speed, and recording the noise value in each operating state;
step six, acquiring the operation noise value when the compressor, the refrigeration fan and the condenser fan are operated in a combined mode, wherein the duration is T 5 min; the compressor, the refrigeration fan and the condenser fan are operated according to corresponding rotating speeds, and noise values in each operating state are recorded;
and step seven, after the running of all the states is finished, the refrigerator finishes the noise test.
2. The method for testing the noise of the air-cooled variable frequency refrigerator according to claim 1, wherein in the third step, the closing time of a single air door is t 1 s, on duration t 2 s。
3. The noise test method of the air-cooled variable frequency refrigerator according to claim 1 or 2, wherein in the fourth step, the refrigerating fan has X target rotating speed values, and X is a positive integer; the refrigerating fan operates at a single target rotating speed value t 3 s, and the duration of the single refrigerating fan completing one speed increasing and speed reducing is (2X-1) t 3 s; stopping running t after the single refrigerating fan finishes one-time acceleration and deceleration 4 And s, entering the next noise testing link.
4. The noise testing method of the air-cooled inverter refrigerator according to claim 3, wherein in the fourth step, the condenser fan has Y target rotation speed values, and Y is a positive integer; coldCondenser fan operating at a single target speed value t 5 s, and the duration of the condenser fan completing one speed increasing and speed decreasing is (2Y-1) t 5 s; stopping the operation t after the condenser fan finishes one-time acceleration and deceleration 6 And s, entering a noise test ring section of the compressor.
5. The noise test method for the air-cooled inverter refrigerator according to claim 4, wherein in the fifth step, the compressor has Z target rotation speed values, and Z is a positive integer; the compressor is operated at a single target speed value t 7 s, and the duration of one time of speed-up and speed-down of the compressor is at least (2Z-1) t 7 s。
6. The noise test method for the air-cooled inverter refrigerator according to claim 4 or 5, wherein in the sixth step, the compressor, the refrigeration fan and the condenser fan operate at corresponding rotation speeds in all the air door opening states; and then, under the condition that all the air doors are closed, the compressor, the refrigerating fan and the condenser fan operate at the corresponding rotating speeds again.
7. The noise testing method for the air-cooled inverter refrigerator according to claim 6, wherein in the sixth step, the compressor, the refrigeration fan and the condenser fan are operated at t under corresponding target rotating speed values 8 s。
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| CN107642934A (en) * | 2017-09-18 | 2018-01-30 | Tcl家用电器（合肥）有限公司 | Noise-reduction method, device and the readable storage medium storing program for executing of frequency-changing wind-cooling refrigerator |
| CN110617561A (en) * | 2019-09-12 | 2019-12-27 | 成都仙德科技有限公司 | Portable sound energy air conditioner noise control method |
| CN210513411U (en) * | 2019-11-19 | 2020-05-12 | 荆州市亿卓实业股份有限公司 | Noise detection device for refrigerator parts |
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