JP2005195292A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent resonance sound in the interior of a compressor by varying the rotating speed in starting the compressor. <P>SOLUTION: In starting the compressor, the initial operation frequency F0 of the compressor is set by an initial operation frequency setting means 100 (A1), and the detected temperature T1a of a compressor internal space temperature detecting device 190 is sensed and output to an operation frequency control means 150 (A2), whereby the initial operation frequency is varied to F1 or F2 by the operation frequency control means 150 (A3). The compressor is driven by a compressor driving means 160 (A4), and the compressor stable pressure temperature T2a is sensed by a compressor internal space temperature detecting device 190, whereby the compressor is varied to the initial operation frequency F0 set by the initial operation frequency setting means 100 (A5), and resonance sound of a refrigerant and the compressor body is avoided to reduce noise in starting. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerator provided with an inverter compressor in which the inside of a shell is a low pressure reciprocating type and the rotation speed is variably controlled.

  In recent years, in order to save energy and to ensure cooling performance under high loads, refrigerators have become the mainstream inverter type in which the rotation speed of the compressor can be varied according to the load state of the refrigerator.

In general, when a motor reaches a certain rotational speed, a resonance phenomenon occurs between the compressor body and noise and vibration. In particular, in an inverter refrigerator, the number of revolutions changes variously, so this resonance phenomenon is also likely to occur. In addition, the compressor mainly uses a reciprocating type with a low pressure inside the shell for reliability reasons. In this case, an air column resonance phenomenon may occur between the shell and the inner space of the shell, which may cause annoying noise. . This air column resonance phenomenon occurs due to the balance between the shape of the shell and the temperature and pressure conditions of the internal space of the shell. However, in the case of the inverter type in which the rotation speed of the compressor is variable, the temperature and pressure conditions of the internal space of the shell change. It is easy to occur and the possibility of resonance is high. For this reason, control has been provided that intentionally changes the rate of change when the rotational speed changes to prevent the occurrence of resonance. (For example, see Patent Document 1)
Hereinafter, the conventional refrigerator will be described with reference to the drawings.

  FIG. 24 is a block diagram showing a configuration of a conventional refrigerator control device. As shown in FIG. 24, the conventional refrigerator control device includes a load detection unit 11 that detects the temperature of the refrigerator or the compressor and senses the load state of the refrigerator, and a load detected from the load detection unit 11. After judging the state of the refrigerator, the current operating frequency determining means 12 for determining the current operating frequency, the resonant frequency storing means 13 for storing the set resonance frequency, and the operating frequency (F0) at the initial startup of the compressor ) Between the current operating frequency (Fc1) and the initial starting operating frequency (F0) inputted from the current operating frequency determining means 12 and the initial operating frequency setting means 10, respectively. Resonance band determination means 1 for determining whether a resonance frequency band (hereinafter referred to as resonance band resonance (Fr1)) input from the resonance frequency storage means 13 exists. In accordance with the determination result of the resonance band determination means 14, an operation frequency control means 15 that variably outputs the current operation frequency (Fc) determined from the current operation frequency determination means 12, and the operation frequency control means 15 Compressor driving means 16 for driving the compressor at the operating frequency output from the.

  About the refrigerator comprised as mentioned above, the operation | movement is demonstrated according to the flowchart of the control apparatus of the conventional refrigerator of FIG. 25 below.

As shown in FIG. 25, at the initial start-up of the refrigerator, the initial operating frequency (F0) of the compressor is set by the initial operating frequency setting means 10, and the resonance band (Fr1) is set in the resonance frequency storage means 13. After (S1), the load sensing means 11 senses and outputs the temperature (not shown) (load: T1) of the inside of the refrigerator or the compressor (load: T1), and the current operating frequency determination means 12 outputs the output. In response to (T1), the current frequency (Fc) is determined according to the load state inside the refrigerator (S3), and the compressor operating frequency (F0: 55 Hz, for example) and the current operating frequency (Fc: 49 Hz) is determined whether a resonance band (Fr1) exists (S4). As a result of the determination, the resonance band (Fr1) is determined to be equal to the operating frequency (F0) of the compressor at the time of initial startup and the current frequency (Fc). ) , The speed increasing rate (t) is rapidly changed by the variable speed setting means (not shown) of the operating frequency control means 15 (S5), and the current operating frequency (Fc) is quickly deviated from the resonance band. After doing so (for example, 37 Hz), the compressor is driven by the compressor driving means 16, and as a result of the determination in the fourth step (S4), the resonance band (Fr1) is the operating frequency of the compressor at the time of initial startup ( If it does not exist between F0) and the current frequency (Fc), the compressor is driven to the current state (S6) and the resonance frequency avoidance control is terminated.
Japanese Patent No. 3291284

  However, in the conventional control described above, since the temperature and pressure of the compressor internal space change abruptly while the compressor is operating at the operating frequency at the time of initial startup after the compressor is stopped, the compressor internal space is stable at the initial frequency. Until then, there is a problem that internal space resonance of the compressor occurs.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a refrigerator that does not have a resonance band from the time of initial compression start to the time when the compressor internal space is stable, and can be silenced at the time of initial start.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a refrigerant whose main component is a hydrocarbon, an electric element, a compression element that is driven by the electric element and opens a gas inlet into the sealed container, An electric element and a compressor containing the compression element; a control means for driving and controlling the electric element; and a rotation speed selection means for selecting the rotation speed of the electric element from one or more preset rotation speeds. The compressor rotational speed selected is controlled for a certain period of time from the start of the compressor using a compressor internal space temperature detection device.

  Thereby, at the time of starting the compressor with a large pressure fluctuation, by detecting the space temperature in the compressor and estimating the compressor internal temperature and the refrigerant density, the state of the refrigerant is controlled by changing the rotation speed for a certain time, Resonance noise between the refrigerant and the compressor body is avoided.

  The refrigerator of this invention can reduce the noise at the time of starting by avoiding the resonance sound of a refrigerant | coolant and a compressor main body.

  According to the first aspect of the present invention, the refrigerant is mainly composed of hydrocarbon, and includes an electric element, a compression element driven by the electric element and having a gas inlet opening in the sealed container, and the electric element and the compression element. Selected compressor rotation, and a control means for driving and controlling the electric element, and a rotation speed selection means for selecting the rotation speed of the electric element from one or a plurality of rotation speeds set in advance. Because the pressure fluctuation is large at the time of starting the compressor by controlling the number for a certain time from the start of starting the compressor, the space temperature in the compressor is , And accurately estimate the internal temperature and refrigerant density of the compressor, and control the refrigerant state by changing the rotation speed for a certain period of time when the pressure fluctuation is large. It is possible to avoid the resonance.

  According to a second aspect of the present invention, the refrigerant is mainly composed of hydrocarbon, and includes an electric element, a compression element driven by the electric element and having a gas inlet opening in the sealed container, and the electric element and the compression element. Selected compressor rotation, and a control means for driving and controlling the electric element, and a rotation speed selection means for selecting the rotation speed of the electric element from one or a plurality of rotation speeds set in advance. The number is controlled using the compressor body temperature detection device for a certain period of time from the start of the compressor start-up, and since the pressure fluctuation is large at the start of the compressor, when the drive start instruction is issued from the control device, the compressor main body The temperature can be detected, the internal temperature of the compressor and the refrigerant density can be estimated by a simple method, and the state of the refrigerant is controlled by changing the rotation speed for a certain period of time when the pressure fluctuation is large. It is possible to avoid the resonance.

  According to a third aspect of the present invention, the refrigerant is mainly composed of hydrocarbon, and includes an electric element, a compression element driven by the electric element and having a gas inlet opening in the sealed container, and the electric element and the compression element. Selected compressor rotation, and a control means for driving and controlling the electric element, and a rotation speed selection means for selecting the rotation speed of the electric element from one or a plurality of rotation speeds set in advance. The number is controlled using the compressor discharge refrigerant temperature detection device for a certain time from the start of the compressor start, and since the pressure fluctuation is large at the start of the compressor, when the drive start instruction is issued from the control device, the compressor The refrigerant temperature can be detected and the compressor internal temperature and refrigerant density can be estimated by a simple method, and the state of the refrigerant is controlled by changing the rotation speed for a certain period of time during which the pressure fluctuation is large. It is possible to avoid the machine body of the resonant sound.

  According to a fourth aspect of the present invention, the refrigerant is mainly composed of hydrocarbon, and includes an electric element, a compression element driven by the electric element and having a gas inlet opening in the sealed container, and the electric element and the compression element. Selected compressor rotation, and a control means for driving and controlling the electric element, and a rotation speed selection means for selecting the rotation speed of the electric element from one or a plurality of rotation speeds set in advance. The number is controlled using the compressor operation time for a fixed time from the start of the compressor, and the pressure fluctuation is large at the start of the compressor. The compressor internal temperature and refrigerant density can be estimated from the compressor start-up time and compressor stop time, and the state of the refrigerant is controlled by changing the rotation speed for a certain period of time when the pressure fluctuation is large. It is possible to avoid the resonance of the compressor body.

  The invention according to claim 5 is the refrigerator according to any one of claims 1 to 4, wherein when the selected rotational speed is the minimum rotational speed, the rotational speed is changed to a high rotational speed side. The oil supply to the compression element can be improved.

  The invention according to claim 6 is the refrigerator according to any one of claims 1 to 4, wherein when the selected rotational speed is the maximum rotational speed, the rotational speed is changed to a low rotational side, Durability and reliability can be improved.

  A seventh aspect of the invention is the refrigerator according to any one of the first to fourth aspects, wherein the selected number of revolutions is changed a plurality of times, and the refrigerant and compressor vibrations are precisely controlled to generate a resonance sound. It can be avoided.

  The invention according to claim 8 is the refrigerator according to any one of claims 1 to 4, wherein the rotation speed control time is extended from the normal start-up time when the compressor is started after turning on the power or after defrosting. Therefore, resonance with the compressor body can be avoided until the time when the pressure fluctuation of the refrigerant is small.

  A ninth aspect of the invention is the refrigerator according to any one of the first to fourth aspects, wherein the rotation speed control is performed a plurality of times when the power is turned on or when the compressor is started after the defrosting is completed. And the compressor vibration can be precisely controlled to avoid the resonance sound, and the resonance point can be prevented from rematching due to the increase of the fluctuation range.

  The invention according to claim 10 is the refrigerator according to any one of claims 1 to 4, wherein the rotation speed is controlled only when the power is turned on or when the compressor is started after the completion of defrosting. Resonance between the refrigerant and the compressor body can be avoided by changing the compressor speed only when the power is turned on or when defrosting, and the fluctuation time is large. It is possible to prevent rematching of resonance points occurring in

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a refrigerator control apparatus according to Embodiment 1 of the present invention, FIG. 2 is a flowchart of the refrigerator according to Embodiment 1 of the present invention, and FIG. 3 is an implementation of the present invention. It is a time chart of the compressor rotation speed by the form 1 of. Embodiments of the present invention will be described below with reference to the drawings. In the resonance frequency control apparatus for an inverter refrigerator according to the present invention, as shown in FIG. 1, the load sensing means 110 for sensing the temperature inside the refrigerator or the compressor and sensing the load state of the refrigerator, and the load sensing means. 110, after determining the state of the refrigerator based on the load sensed from 110, a current operating frequency determining means 120 for determining the current operating frequency, and an initial operating frequency setting means 100 for setting the operating frequency F0 when the compressor is initially started, The initial operating frequency number F0 determined from the current operating frequency determining means 120 is varied according to the determination results of the compressor internal space temperature detecting device 190, the current operating frequency determining means 120, and the compressor internal space temperature detecting device 190. Operating frequency control means 150 for outputting the compressor, and the compressor by the operating frequency output from the operating frequency control means 150. It is constituted by a compressor drive means 160 for moving.

  Hereinafter, variable control of the initial operating frequency of the inverter refrigerator according to the present invention configured as described above will be described. As shown in FIG. 2, when the compressor is started, that is, when the load sensing means 110, the power-on detection device 210 or the defrosting end detection device 220 detects the compressor activation condition, the initial operation frequency setting means 100 is set. Is used to set the initial operating frequency F0 of the compressor (A1), and the operating frequency control means 150 senses and outputs the detected temperature (T1a) of the compressor space temperature detecting device 190 to the operating frequency control means 150 (A2a). 150, the initial operating frequency is changed to F1 or F2 (A3), the compressor is driven by the compressor driving means 160 (A4), and the compressor internal space temperature detection device 190 senses the compressor stable pressure temperature (T2a). Thus, the compressor is changed to the initial operating frequency F0 set by the initial operating frequency setting means 100 (A5), and the present invention is applied. To end the initial operating frequency of the inverter refrigerator.

  Therefore, since the pressure fluctuation is large at the time of starting the compressor, it is possible to detect the internal space temperature of the compressor and accurately estimate the internal temperature of the compressor and the refrigerant density when an instruction to start driving is issued from the control device. It is possible to control the state of the refrigerant by changing the rotation speed only for a certain period of time, and to avoid resonance noise between the refrigerant and the compressor body.

  However, when it is determined that the operation frequency of the compressor at the time of initial startup does not exist at the resonance frequency, the variable control is not performed.

(Embodiment 2)
FIG. 4 is a block diagram showing the configuration of the refrigerator control device according to the second embodiment of the present invention, FIG. 5 is a flowchart of the refrigerator according to the second embodiment of the present invention, and FIG. 6 shows the implementation of the present invention. It is a time chart of the compressor rotation speed by the form 2 of. Embodiments of the present invention will be described below with reference to the drawings. In the resonance frequency control apparatus for an inverter refrigerator according to the present invention, as shown in FIG. 4, the load sensing means 110 for sensing the temperature inside the refrigerator or the compressor and sensing the load state of the refrigerator, and the load sensing means. 110, after determining the state of the refrigerator based on the load sensed from 110, a current operating frequency determining means 120 for determining the current operating frequency, and an initial operating frequency setting means 100 for setting the operating frequency F0 when the compressor is initially started, The initial operating frequency number F0 determined from the current operating frequency determining means 120 is varied according to the determination results of the compressor main body temperature detecting device 230, the current operating frequency determining means 120, and the compressor main body temperature detecting device 230. Operating frequency control means 150 that outputs the compressor, and the compressor is driven by the operating frequency output from the operating frequency control means 150. Is constituted by a compressor drive means 160 for.

  Hereinafter, variable control of the initial operating frequency of the inverter refrigerator according to the present invention configured as described above will be described. As shown in FIG. 5, when the compressor is started, that is, when the load sensing means 110, the power-on detection device 210 or the defrosting end detection device 220 detects the compressor activation condition, the initial operation frequency setting means 100 is set. Is used to set the initial operating frequency F0 of the compressor (A1), and the operating frequency control means 150 senses and outputs the detected temperature (T1b) of the compressor body temperature detecting device 230 to the operating frequency control means 150 (A2b). 150, the initial operating frequency is changed to F1 or F2 (A3), the compressor is driven by the compressor driving means 160 (A4), and the compressor body temperature detecting device 230 detects the compressor stable pressure temperature (T2b). Thus, the compressor is changed to the initial operation frequency F0 set by the initial operation frequency setting means 100 (A5), and the input according to the present invention is changed. To end the initial operating frequency of over data refrigerator.

  Therefore, since the pressure fluctuation is large at the time of starting the compressor, when an instruction to start driving is issued from the control device, the compressor body temperature can be detected, and the compressor internal temperature and the refrigerant density can be estimated by a simple method. The state of the refrigerant can be controlled by changing the number of revolutions for a certain period of time when the pressure fluctuation is large, and resonance noise between the refrigerant and the compressor body can be avoided.

  However, when it is determined that the operation frequency of the compressor at the time of initial startup does not exist at the resonance frequency, the variable control is not performed.

(Embodiment 3)
FIG. 7 is a block diagram showing a configuration of a refrigerator control device according to Embodiment 3 of the present invention, FIG. 8 is a flowchart of the refrigerator according to Embodiment 3 of the present invention, and FIG. 9 is an implementation of the present invention. It is a time chart of the compressor rotation speed by the form 3. Embodiments of the present invention will be described below with reference to the drawings. In the resonance frequency control apparatus for an inverter refrigerator according to the present invention, as shown in FIG. 7, the load sensing means 110 senses the load state of the refrigerator by sensing the temperature in the refrigerator or the compressor, and the load sensing means. 110, after determining the state of the refrigerator based on the load sensed from 110, a current operating frequency determining means 120 for determining the current operating frequency, and an initial operating frequency setting means 100 for setting the operating frequency F0 when the compressor is initially started, The initial operating frequency number F0 determined from the current operating frequency determining means 120 according to the determination results of the compressor discharged refrigerant temperature detecting device 240, the current operating frequency determining means 120, and the compressor discharged refrigerant temperature detecting device 240 is The operation frequency control means 150 that outputs the variable and the operation frequency output from the operation frequency control means 150 is compressed. It is configured to include a, a compressor driving unit 160 for driving the.

  Hereinafter, variable control of the initial operating frequency of the inverter refrigerator according to the present invention configured as described above will be described. As shown in FIG. 8, when the compressor is activated, that is, when the load sensing means 110, the power-on detection device 210, or the defrosting completion detection device 220 detects the compressor activation condition, the initial operation frequency setting means 100 is set. Is used to set the initial operating frequency F0 of the compressor (A1), and the operating frequency control means 150 senses and outputs the detected temperature (T1c) of the compressor discharge refrigerant temperature detecting device 240 (A2c). The initial operating frequency is varied to F1 or F2 by means 150 (A3), the compressor is driven by compressor driving means 160 (A4), and the compressor discharge refrigerant temperature detection device 240 causes the compressor stable pressure temperature (T2c). , The compressor is changed to the initial operating frequency F0 set by the initial operating frequency setting means 100 (A5), and the present invention is applied. To end the initial operating frequency of that inverter refrigerator.

  Therefore, since the pressure fluctuation is large at the time of starting the compressor, the compressor discharge refrigerant temperature can be detected and the compressor internal temperature and refrigerant density can be estimated by a simple method when an instruction to start driving is issued from the control device. The state of the refrigerant can be controlled by changing the number of rotations for a certain period of time when the pressure fluctuation is large, and resonance noise between the refrigerant and the compressor body can be avoided.

  However, when it is determined that the operation frequency of the compressor at the time of initial startup does not exist at the resonance frequency, the variable control is not performed.

(Embodiment 4)
FIG. 10 is a block diagram showing the configuration of the refrigerator control device according to the fourth embodiment of the present invention, FIG. 11 is a flowchart of the refrigerator according to the fourth embodiment of the present invention, and FIG. 12 shows the implementation of the present invention. It is a time chart of the compressor rotation speed by the form 4. Embodiments of the present invention will be described below with reference to the drawings. In the inverter refrigerator resonance frequency control apparatus according to the present invention, as shown in FIG. 10, the load sensing means 110 senses the load state of the refrigerator by sensing the temperature in the refrigerator or the compressor, and the load sensing means. 110, after determining the state of the refrigerator based on the load sensed from 110, a current operating frequency determining means 120 for determining the current operating frequency, and an initial operating frequency setting means 100 for setting the operating frequency F0 when the compressor is initially started, The initial operating frequency F0 determined from the current operating frequency determining means 120 is varied according to the determination results of the compressor operating time storing device 250, the current operating frequency determining means 120, and the compressor operating time storing device 250. The operating frequency control means 150 to output, and the compressor is driven by the operating frequency output from the operating frequency control means 150 Compressor driving means 160 to be configured.

  Hereinafter, variable control of the initial operating frequency of the inverter refrigerator according to the present invention configured as described above will be described. As shown in FIG. 11, when the compressor is activated, that is, when the load sensing means 110, the power-on detection device 210 or the defrosting completion detection device 220 detects the compressor activation condition, the initial operating frequency setting means 100 is set. To set the initial operating frequency F0 of the compressor (A1), and output the operating time before the compressor stop from the compressor operating time storage device 250 to the operating frequency control means 150 (A6). The initial operating frequency is changed to F1 or F2 (A3), the compressor is driven by the compressor driving means 160 (A4), and the initial operating frequency set by the initial operating frequency setting means 100 after a predetermined time (A) has elapsed. The compressor is changed to F0 (A7), and the initial operating frequency of the inverter refrigerator according to the present invention is terminated.

  Therefore, since the pressure fluctuation is large when the compressor is started, the compressor internal temperature and refrigerant density are estimated from the compressor start time immediately before the compressor start and the compressor stop time when an instruction to start driving is issued from the control device. It is possible to control the state of the refrigerant by changing the rotation speed for a certain period of time when the pressure fluctuation is large, and to avoid the resonance noise between the refrigerant and the compressor body.

  However, when it is determined that the operation frequency of the compressor at the time of initial startup does not exist at the resonance frequency, the variable control is not performed.

(Embodiment 5)
FIG. 13 is a flowchart of the refrigerator according to the fifth embodiment of the present invention, and FIG. 14 is a time chart of the compressor rotation speed according to the fifth embodiment of the present invention. In addition, about the same structure as Embodiment 1-4, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and only a different point is demonstrated.

  In FIG. 13, at the time of determination of (Q1), that is, when the initial operating frequency F0 of the compressor is set by the initial operating frequency setting means 100 (A1), the operating frequency is selected when the minimum set rotational speed FMIN of the compressor is selected. The compressor internal space temperature detection device 190, the compressor body temperature detection device, and the detected temperature of the compressor discharge refrigerant temperature detection device 240 or the compressor operation time storage device 250 is input to the control means 150 (A2a). , A2b, A2c, A6), the operating frequency control means 150 changes the initial operating frequency to a possible frequency F1 (A3MIN), and the compressor driving means 160 drives the compressor (A4). At this time, the variable frequency F1 is larger than the initial operation frequency F0.

  Therefore, it is possible to improve the oil supply to the compression element of the compressor.

(Embodiment 6)
FIG. 15 is a flowchart of the refrigerator according to the sixth embodiment of the present invention, and FIG. 16 is a time chart of the compressor rotation speed according to the sixth embodiment of the present invention. In addition, about the same structure as Embodiment 1-4, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and only a different point is demonstrated. In FIG. 15, at the time of the determination of (Q2), that is, when the initial operating frequency F0 of the compressor is set by the initial operating frequency setting means 100 (A1), the operating frequency is The compressor internal space temperature detection device 190, the compressor body temperature detection device, and the detected temperature of the compressor discharge refrigerant temperature detection device 240 or the compressor operation time storage device 250 is input to the control means 150 (A2a). , A2b, A2c, A6), the operating frequency control means 150 changes the initial operating frequency to a possible frequency F1 (A3MAX), and the compressor driving means 160 drives the compressor (A4). At this time, the variable frequency F1 is set to a value smaller than the initial operation frequency F0.

  Therefore, the durability and reliability of the compressor can be improved.

(Embodiment 7)
FIG. 17 is a flowchart of the refrigerator according to the seventh embodiment of the present invention, and FIG. 18 is a time chart of the compressor rotation speed according to the seventh embodiment of the present invention. In addition, about the same structure as Embodiment 1-4, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and only a different point is demonstrated. In FIG. 17, at the initial start-up of the refrigerator, the initial operating frequency F0 is set by the initial operating frequency setting means 100 (A1), and the compressor internal space temperature detecting device 190 and the compressor body temperature detection are set in the operating frequency control means 150. The operation frequency control means 150 is initialized by inputting the detected temperature of the apparatus and the compressor discharge refrigerant temperature detection device 240 or the compressor operation time storage device 250 before inputting the compressor stop operation time (A2a, A2b, A2c, A6). The operating frequency is varied as F1 or F2 (A3), the compressor is driven by the compressor driving means 160 (A4), the compressor space temperature detector 190, the compressor body temperature detector, and the compressor discharge refrigerant temperature detection When the temperature detected by the device 240 is the compressor stable pressure temperature (T'1a, T'1b, T'1c) or constant When (b) is reached, the frequency F1 or F2 is changed to the frequency F′1 or F′2 by the operating frequency control means 150 (A8 or A9), and the compressor internal space temperature detector 190 and the compressor body temperature are detected. By detecting the compressor stable pressure temperature (T2a, T2bT2c) or detecting a certain time (C) by the apparatus and compressor discharge refrigerant temperature detection device 240, the initial operation frequency F0 set by the initial operation frequency setting means 100 is detected. The compressor is driven (A5 or A9) to finish the initial operating frequency of the inverter refrigerator according to the present invention.

  Therefore, the vibration of the refrigerant and the compressor can be precisely controlled, and resonance noise can be avoided.

  Note that the frequency can be varied a plurality of times when the temperature in the compressor internal space stabilization (T′1a, T′1b, T′1c) or a certain time (B) is reached.

(Embodiment 8)
FIG. 19 is a flowchart of the refrigerator according to the eighth embodiment of the present invention, and FIG. 20 is a time chart of the compressor rotation speed according to the eighth embodiment of the present invention. Note that the same components as those in the fourth embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described. In the variable control described in the first embodiment, only when the compressor start condition is detected by the power-on detection device 210 or the defrosting end detection device 220 (Q3), after a predetermined time (A) elapses for a certain time ( It shall be extended to d).

  Thereby, the resonance sound with the compressor body can be avoided until the time when the refrigerant pressure fluctuation is small.

(Embodiment 9)
FIG. 21 is a flowchart of the refrigerator according to the ninth embodiment of the present invention, and FIG. 22 is a time chart of the compressor rotation speed according to the ninth embodiment of the present invention. In addition, about the same structure as Embodiment 1-4, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and only a different point is demonstrated.

  For the variable control described in the first to fourth embodiments, only when the compressor activation condition is detected by the power-on detection device 210 or the defrosting completion detection device 220 (Q3), at the first compressor initial activation, The operating temperature control means 150 receives the detected temperature of the compressor internal space temperature detecting device 190, the compressor main body temperature detecting device and the compressor discharge refrigerant temperature detecting device 240 or the operating time before the compressor stop from the compressor operating time storage device 250. (A2a, A2bA2c, A6), the operating frequency control means 150 changes the initial operating frequency to F1 or F2 (A3), the compressor driving means 160 drives the compressor (A4), and the compressor internal temperature is detected. The temperature detected by the apparatus 190, the compressor main body temperature detection apparatus, and the compressor discharge refrigerant temperature detection apparatus 240 is compressed. When the machine stable pressure temperature (T'1a, T'1b, T'1c) is reached or after a certain time (b) has elapsed, the operating frequency control means 150 sets the frequency F1 or F2 to the frequency F'1 or F '. 2 (A8), the detected temperatures of the compressor internal space temperature detection device 190, the compressor body temperature detection device, and the compressor discharge refrigerant temperature detection device 240 detect the compressor stable pressure temperature (T2a, T2bT2c). Alternatively, after a predetermined time (c) has elapsed, the compressor is driven to the initial operating frequency F0 set by the initial operating frequency setting means 100 (A5 or A10), and the initial operating frequency of the inverter refrigerator according to the present invention is terminated. It is possible to change the frequency when the internal space stable temperature (T'1a, T'1b, T'1c) in the compressor is reached or after a certain time (B) has elapsed, even at multiple temperatures or multiple hours. To do.

  Thereby, it is possible to precisely control the refrigerant and compressor vibrations, avoid resonance noise, and prevent resonance points from rematching due to an increase in fluctuation range.

(Embodiment 10)
FIG. 23 is a flowchart of the refrigerator according to the tenth embodiment of the present invention. In addition, about the same structure as Embodiment 1-4, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and only a different point is demonstrated.

For the variable control described in the first to fourth embodiments, only when the compressor activation condition is detected by the power-on detection device 210 or the defrosting completion detection device 220 (Q3), at the first compressor initial activation, The operating temperature control means 150 receives the detected temperature of the compressor internal space temperature detecting device 190, the compressor main body temperature detecting device and the compressor discharge refrigerant temperature detecting device 240 or the operating time before the compressor stop from the compressor operating time storage device 250. (A2a, A2b, A2c, A6), the operating frequency control means 150 changes the initial operating frequency to F1 or F2 (A3)
Thereby, the pressure fluctuation is large, the fluctuation time is long, by changing the compressor rotation speed only at the time of power-on or defrosting, the resonance noise between the refrigerant and the compressor body can be avoided, Re-coincidence of resonance points that occurs when the pressure fluctuation is small can be prevented.

  As described above, the refrigerator according to the present invention can reduce the noise of the compressor that houses the electric element and the compression element, and can be applied to refrigeration and air conditioning equipment having the compressor.

The block diagram which showed the structure of the control apparatus of the refrigerator by Embodiment 1 of this invention Flowchart of refrigerator according to Embodiment 1 of the present invention Time chart of compressor rotation speed according to Embodiment 1 of the present invention The block diagram which showed the structure of the control apparatus of the refrigerator by Embodiment 2 of this invention. Flowchart of the refrigerator according to the second embodiment of the present invention Time chart of compressor rotation speed according to the second embodiment of the present invention The block diagram which showed the structure of the control apparatus of the refrigerator by Embodiment 3 of this invention Flowchart of the refrigerator according to the third embodiment of the present invention Time chart of compressor rotation speed according to Embodiment 3 of the present invention The block diagram which showed the structure of the control apparatus of the refrigerator by Embodiment 4 of this invention Flowchart of refrigerator according to embodiment 4 of the present invention Time chart of compressor rotation speed according to embodiment 4 of the present invention Flowchart of refrigerator according to embodiment 5 of the present invention Time chart of compressor rotation speed according to the fifth embodiment of the present invention Flowchart of refrigerator according to Embodiment 6 of the present invention Time chart of compressor rotation speed according to the sixth embodiment of the present invention Flowchart of refrigerator according to embodiment 7 of the present invention Time chart of compressor rotation speed according to embodiment 7 of the present invention Flowchart of refrigerator according to embodiment 8 of the present invention Time chart of compressor rotation speed according to the eighth embodiment of the present invention Flowchart of refrigerator according to embodiment 9 of the present invention Time chart of compressor rotation speed according to embodiment 9 of the present invention Refrigerator flowchart according to embodiment 10 of the present invention The block diagram which showed the structure of the control apparatus of the conventional refrigerator Flowchart of a conventional refrigerator control device

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Initial frequency setting means 110 Load sensing means 120 Current operation frequency determination means 130 Resonance frequency storage means 140 Resonance band judgment means 150 Operation frequency control means 160 Compressor drive means 190 Compressor space temperature detection device 210 Power-on detection device 220 Defrosting Completion detection device 230 Compressor body temperature detection device 240 Compressor discharge refrigerant temperature detection device 250 Compressor operation time storage device

Claims (10)

The refrigerant includes hydrocarbon as a main component, an electric element, a compression element driven by the electric element and having a gas inlet opening in the sealed container, a compressor containing the electric element and the compression element, and the electric element Control means for driving and controlling, and a rotation speed selection means for selecting the rotation speed of the electric element from one or a plurality of rotation speeds set in advance, and the selected compressor rotation speed is constant from the start of the compressor start-up Refrigerator controlled using time and space temperature detector in compressor. The refrigerant includes hydrocarbon as a main component, an electric element, a compression element driven by the electric element and having a gas inlet opening in the sealed container, a compressor containing the electric element and the compression element, and the electric element Control means for driving and controlling, and a rotation speed selection means for selecting the rotation speed of the electric element from one or a plurality of rotation speeds set in advance, and the selected compressor rotation speed is constant from the start of the compressor start-up Refrigerator controlled with time, compressor body temperature detector. The refrigerant includes hydrocarbon as a main component, an electric element, a compression element driven by the electric element and having a gas inlet opening in the sealed container, a compressor containing the electric element and the compression element, and the electric element Control means for driving and controlling, and a rotation speed selection means for selecting the rotation speed of the electric element from one or a plurality of rotation speeds set in advance, and the selected compressor rotation speed is constant from the start of the compressor start-up Refrigerator controlled using time, compressor discharge refrigerant temperature detection device. The refrigerant includes hydrocarbon as a main component, an electric element, a compression element driven by the electric element and having a gas inlet opening in the sealed container, a compressor containing the electric element and the compression element, and the electric element Control means for driving and controlling, and a rotation speed selection means for selecting the rotation speed of the electric element from one or a plurality of rotation speeds set in advance, and the selected compressor rotation speed is constant from the start of the compressor start-up Refrigerator controlled using time and compressor operating time. The refrigerator as described in any one of Claim 1 to 4 which changes a rotation speed to the high rotation side when the selection rotation speed is the minimum rotation speed. The refrigerator as described in any one of Claim 1 to 4 which changes a rotation speed to the low rotation side when the selection rotation speed is a maximum rotation speed. The refrigerator according to any one of claims 1 to 4, wherein the selected number of rotations is changed a plurality of times. The refrigerator according to any one of claims 1 to 4, wherein the rotation speed control time is extended from that at a normal start-up time when the compressor is started after the power is turned on or after the defrosting is completed. The refrigerator according to any one of claims 1 to 4, wherein the rotational speed control is performed a plurality of times when the power is turned on or when the compressor is started after defrosting. The refrigerator as described in any one of Claim 1 to 4 which performs rotation speed control only at the time of the compressor starting after completion | finish of defrosting at the time of power activation.

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