TWI710740B - Adjustment system for rotary speed of frequency conversion refrigerator and metho thereof - Google Patents

Abstract

An adjustment system for rotary speed of frequency conversion refrigerator is disclosed in the present invention. The adjustment system includes a storing module, a detecting module, a receiving module, a comparing module, and an adjusting module. The adjustment system is utilized to adjust a rotary speed of a frequency conversion refrigerator by using an environment temperature and a setting temperature.

Description

Speed adjustment system and method of frequency conversion refrigerator

The present invention relates to a system and method, in particular to a system and method for adjusting the speed of a frequency conversion refrigerator.

Generally, refrigerators on the market can be classified into fixed frequency refrigerators or inverter refrigerators according to the type of compressor. According to the way of use, it can be divided into commercial refrigerators or household refrigerators.

Although the fixed frequency operation of the fixed frequency refrigerator can reach the temperature set by the user, the fixed frequency compressor of the fixed frequency refrigerator will frequently start and stop when the temperature reaches the set temperature to maintain the internal temperature of the fixed frequency refrigerator. Power consumption. Therefore, there are currently inverter refrigerators that use inverter compressors to operate. When the temperature of the inverter refrigerator reaches the set temperature, the inverter compressor will run at a lower speed to maintain the temperature in the warehouse and achieve the effect of saving electricity. However, in the prior art inverter refrigerator, assuming that the user set a higher temperature (for example, -18°C), when the temperature in the refrigerator reaches the set temperature, the inverter compressor will run at the lowest speed (for example, 35rps), but if the user turns it down When the temperature is set (for example, -22℃), the inverter compressor will still run at the lowest speed (for example, 35rps). Although the power saving effect can be achieved at this time, the lowest speed cannot achieve the effect of maintaining the temperature in the storage room. That is to say, the speed of the inverter compressor is not enough to meet the load demand of -22°C.

In addition, the ambient temperature of the environment where the inverter refrigerator is located will also affect the inverter refrigerator. If the ambient temperature is high, the inverter compressor runs at the lowest speed, although the power saving effect can be achieved, but the above-mentioned problems may occur. The lowest speed cannot achieve the effect of maintaining the temperature in the library; if the ambient temperature is low, the inverter compression When the machine is running at the lowest speed, although it can maintain the temperature in the warehouse, it may cause additional power consumption. Continuing the above specific example, because the ambient temperature is low, the minimum speed of the inverter compressor may be 33rps or even 30rps to achieve the effect of maintaining the temperature in the storage. Therefore, if the inverter compressor continues to operate at the minimum speed of 35rps , It will cause power consumption problems. Therefore, there is room for improvement in the frequency conversion refrigerator in the prior art.

In view of the various problems in the prior art, inverter refrigerators. One of the main objects of the present invention is to provide a system and method for adjusting the rotation speed of a frequency conversion refrigerator to solve at least one problem in the prior art.

In order to solve the problems of the prior art, the necessary technical means adopted by the present invention is to provide a frequency conversion refrigerator speed adjustment system for adjusting a minimum speed of a frequency conversion refrigerator, including a storage module, an ambient temperature detection module, A set temperature receiving module, a comparison module and a rotation speed adjustment module. The storage module presets an ambient temperature reference value and a set temperature reference value. The ambient temperature detection module is used to detect an actual value of the ambient temperature. The set temperature receiving module is used to receive an actual value of the set temperature.

The comparison module communicates with the storage module, the ambient temperature detection module and the set temperature receiving module to receive the ambient temperature reference value, the actual ambient temperature value, the set temperature reference value and the set temperature actual value, and It includes a first subtraction unit and a second subtraction unit. The first subtraction unit is used for subtracting the reference value of the environment temperature from the actual value of the environment temperature to calculate an environment temperature difference. The second subtraction unit is used for subtracting the set temperature reference value from the set temperature actual value to calculate a set temperature difference.

The rotational speed adjustment module is connected to the comparison module in communication and includes a rule storage unit, a receiving unit and a generating unit. The rule storage unit stores a first adjustment rule and a second adjustment rule. The receiving unit receives the difference between the ambient temperature and the set temperature. The generating unit is electrically connected to the rule storage unit and the receiving unit for generating a first rotation speed adjustment amount according to the first adjustment rule and the difference between the ambient temperature and a second rotation speed adjustment amount according to the second adjustment rule and the set temperature difference, In this way, the first rotation speed adjustment amount and the second rotation speed adjustment amount are used to adjust the minimum rotation speed.

Among them, in the first adjustment rule, the environmental temperature difference is positively correlated with the first rotational speed adjustment, and the environmental temperature difference is multiplied by a first gain value to calculate the first rotational speed adjustment, and in the second adjustment rule , The set temperature difference is negatively related to the second speed adjustment, and the set temperature difference is multiplied by a second gain value smaller than the first gain value to calculate the second speed adjustment.

On the basis of the above-mentioned necessary technical means, a subsidiary technical means derived from the present invention is to make the speed adjustment module in the frequency conversion refrigerator speed adjustment system further include a first upper speed limit setting unit and a first speed lower limit setting unit. The first rotation speed upper limit setting unit is used for setting a first rotation speed upper limit value in the first adjustment rule, so that when a first rotation speed value of the first rotation speed adjustment quantity exceeds the first rotation speed upper limit value, the first rotation speed The first rotation speed value of the adjustment value is maintained at the first rotation speed upper limit value. The first rotation speed lower limit setting unit is used for setting a first rotation speed lower limit in the first adjustment rule, so that when the first rotation speed value of the first rotation speed adjustment quantity is lower than the first rotation speed lower limit, the first rotation speed The first rotation speed value of the adjustment value is maintained at the first rotation speed lower limit value.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that the speed adjustment module in the frequency conversion refrigerator speed adjustment system further includes a second upper speed limit setting unit and a second lower speed limit setting unit. The second rotation speed upper limit setting unit is used for setting a second rotation speed upper limit value in the second adjustment rule, so that when one of the second rotation speed adjustment variables exceeds the second rotation speed upper limit value, the second rotation speed The second rotation speed value of the adjustment amount is maintained at the second rotation speed upper limit value. The second speed lower limit setting unit is used for setting a second speed lower limit in the second adjustment rule, so that when the second speed value of the second speed adjustment is lower than the second speed lower limit, the second speed The second rotation speed value of the adjustment quantity is maintained at the second rotation speed lower limit value.

Based on the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the speed adjustment module in the frequency conversion refrigerator speed adjustment system further include a minimum speed upper limit setting unit and a lowest speed lower limit setting unit. The minimum speed upper limit setting unit is used to set an upper limit value of the lowest speed, so that when one of the lowest speed values exceeds the upper limit value of the lowest speed, the lowest speed value of the lowest speed is maintained at the upper limit value of the lowest speed. The minimum rotation speed lower limit setting unit is used to set a minimum rotation speed lower limit, so that when the minimum rotation speed value of the minimum rotation speed is lower than the minimum rotation speed lower limit, the minimum rotation speed value of the minimum rotation speed is maintained at the minimum rotation speed lower limit.

In order to solve the problem of the prior art, the necessary technical means adopted by the present invention is to additionally provide a method for adjusting the speed of a frequency conversion refrigerator, and includes the following steps: using the storage module, preset the ambient temperature reference value and the set temperature reference value ; Use the ambient temperature detection module to detect the actual value of the ambient temperature, use the set temperature receiving module to receive the actual value of the set temperature; use the comparison module to calculate the difference between the ambient temperature and the set temperature Difference; using the rotational speed adjustment module to generate the first rotational speed adjustment amount and the second rotational speed adjustment amount according to the first adjustment rule, the ambient temperature difference, the second adjustment rule and the set temperature difference, Therefore, the minimum rotation speed is adjusted by using the first rotation speed adjustment amount and the second rotation speed adjustment amount.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to adjust the speed of the inverter refrigerator, further comprising the following steps: using the first subtraction unit to subtract the actual value of the ambient temperature from the ambient temperature The reference value is used to calculate the ambient temperature difference, and the second subtraction unit is used to subtract the set temperature reference value from the set temperature actual value to calculate the set temperature difference.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to adjust the speed of the frequency conversion refrigerator, further comprising the following steps: using the rule storage unit to store the first adjustment rule and the second adjustment rule , Using the receiving unit to receive the ambient temperature difference and the set temperature difference; using the generating unit to generate the first rotation speed adjustment amount according to the first adjustment rule and the ambient temperature difference, and to generate the first rotation speed adjustment amount according to the second adjustment The difference between the rule and the set temperature generates the second rotational speed adjustment.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to adjust the speed of the inverter refrigerator, further comprising the following steps: using a first upper speed limit setting unit of the speed adjustment module, in the first A first rotation speed upper limit value is set in an adjustment rule, so that when a first rotation speed value of the first rotation speed adjustment value exceeds the first rotation speed upper limit value, the first rotation speed value of the first rotation speed adjustment value Maintain the first rotation speed upper limit value, and use a first rotation speed lower limit setting unit of the rotation speed adjustment module to set a first rotation speed lower limit value in the first adjustment rule, so that the first rotation speed adjustment amount When the first rotation speed value is lower than the first rotation speed lower limit value, the first rotation speed value of the first rotation speed adjustment amount is maintained at the first rotation speed lower limit value.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to adjust the speed of the inverter refrigerator, further comprising the following steps: using a second upper speed limit setting unit of the speed adjustment module, in the first A second upper limit value of the rotation speed is set in the second adjustment rule, so that when one of the second rotation speed values of the second rotation speed adjustment value exceeds the second rotation speed upper limit value, the second rotation speed value of the second rotation speed adjustment value Maintain at the second upper limit of rotation speed, use a second lower limit setting unit of the rotation speed adjustment module, when the second rotation speed value of the second rotation speed adjustment is lower than the second lower limit of rotation speed, The second rotation speed value of the second rotation speed adjustment value is maintained at the second rotation speed lower limit value.

In summary, the system and method for adjusting the speed of the inverter refrigerator provided by the present invention uses the difference between the ambient temperature and the set temperature to generate the first speed adjustment and the second speed adjustment respectively, so that the lowest The rotation speed can achieve the effect of maintaining the temperature in the storage, and it can also achieve the effect of saving electricity while maintaining the temperature in the storage.

The specific embodiments of the present invention will be described in more detail below with reference to the schematic diagram. According to the following description and the scope of patent application, the advantages and features of the present invention will be more clear. It should be noted that the drawings all adopt very simplified forms and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

Please refer to Figures 1 to 4, where the first figure is a block diagram showing the speed adjustment system of an inverter refrigerator provided by a preferred embodiment of the present invention; the second figure is a block diagram showing the inverter provided by a preferred embodiment of the present invention The schematic diagram of the first adjustment rule of the refrigerator rotation speed adjustment system; the third diagram is a schematic diagram showing the second adjustment rule of the inverter refrigerator rotation speed adjustment system provided by the preferred embodiment of the present invention; and the fourth diagram shows the preferred embodiment of the present invention The flow chart of the method for adjusting the speed of the inverter refrigerator provided by the embodiment. As shown in the figure, a frequency conversion refrigerator speed adjustment system 1 is used to adjust a minimum speed of a frequency conversion refrigerator 2, and includes a storage module 11, an ambient temperature detection module 12, and a set temperature receiving module 13, A comparison module 14 and a rotation speed adjustment module 15.

The storage module 11 presets an ambient temperature reference value and a set temperature reference value (such as step S101).

The ambient temperature detection module 12 is used to detect the actual value of an ambient temperature, and can be a wireless temperature sensor, a probe-type temperature sensor, or other devices or modules with an ambient temperature detection function ( Such as step S102).

The set temperature receiving module 13 is used to receive an actual value of the set temperature. Generally, the actual value of the set temperature can be adjusted by a user (for example, step S102). If the user does not make adjustments, the actual value of the set temperature will be the same as the set temperature reference value.

The comparison module 14 is communicatively connected to the storage module 11, the ambient temperature detection module 12, and the set temperature receiving module 13 to receive the reference value of the ambient temperature, the actual value of the ambient temperature, the reference value of the set temperature and the actual value of the set temperature, and It includes a first subtraction unit 141 and a second subtraction unit 142.

The first subtraction unit 141 is used for subtracting the reference value of the environment temperature from the actual value of the environment temperature to calculate the difference of the environment temperature. The second subtraction unit 142 uses the actual value of the set temperature to subtract the set temperature reference value to calculate the set temperature difference (for example, step S103).

The rotation speed adjustment module 15 is connected to the comparison module 14 in communication, and includes a rule storage unit 151, a receiving unit 152, a generating unit 153, a first upper limit setting unit 154, a first lower limit setting unit 155, and a second The upper limit of rotation speed setting unit 156, a second lower limit of rotation setting unit 157, an upper limit of minimum rotation setting unit 158, and a lower limit of minimum rotation setting unit 159.

The rule storage unit 151 stores a first adjustment rule R1 and a second adjustment rule R2 (for example, step S104).

Preferably, the first rotation speed upper limit setting unit 154 will set a first rotation speed upper limit VU1 in the first adjustment rule R1. The first rotation speed lower limit setting unit 155 will set a first rotation speed lower limit VD1 in the first adjustment rule R1 (step S105). In addition, the second upper limit rotation speed setting unit 156 will set a second upper limit value VU2 in the second adjustment rule R2. The second rotation speed lower limit setting unit 157 will set a second rotation speed lower limit VD2 in the second adjustment rule R2 (step S106).

It should be noted that in this embodiment, although the rotational speed adjustment module 15 includes a first rotational speed upper limit setting unit 154, a first rotational speed lower limit setting unit 155, a second rotational speed upper limit setting unit 156, and a second rotational speed lower limit setting unit 157. , But not limited to this. The rotation speed adjustment module 15 may also only include the first rotation speed upper limit setting unit 154 and the first rotation speed lower limit setting unit 155, and not include the second rotation speed upper limit setting unit 156 and the second rotation speed lower limit setting unit 157; or it may only include the second rotation speed. The upper limit setting unit 156 and the second lower limit setting unit 157 do not include the first upper limit setting unit 154 and the first lower limit setting unit 155.

The receiving unit 152 is used to receive the difference between the ambient temperature and the set temperature (for example, step S107). The generating unit 153 is electrically connected to the rule storage unit 151 and the receiving unit 152 for generating a first rotation speed adjustment amount according to the first adjustment rule R1 and the difference between the ambient temperature, and generating a second adjustment amount according to the second adjustment rule R2 and the set temperature difference. The rotation speed adjustment amount (such as step S108), whereby the minimum rotation speed of the inverter refrigerator 2 is adjusted by using the first rotation speed adjustment amount and the second rotation speed adjustment amount.

Wherein, in the first adjustment rule R1, the ambient temperature difference is positively correlated with the first rotation speed adjustment, and the ambient temperature difference is multiplied by a first gain value to calculate the first rotation speed adjustment, and in the second adjustment rule R2 Here, the set temperature difference is negatively correlated with the second speed adjustment amount, and the set temperature difference is multiplied by a second gain value smaller than the first gain value to calculate the second speed adjustment amount.

Hereinafter, actual numbers will be used as examples. The numbers are only examples to clearly express the specific embodiments of the present invention and do not limit the embodiments of the present invention.

For example, the reference value of the ambient temperature in the storage module 11 is 25°C, and the reference value of the set temperature is -18°C; the minimum speed of the inverter refrigerator 2 is 30rps; the first adjustment rule R1 has a slope of 1 (first The second adjustment rule R2 has an oblique line with a slope of -2 (the second gain value). At this time, when the actual value of the ambient temperature is also 25℃, it will correspond to the point a in the second figure; when the actual value of the set temperature is also -18℃, it will correspond to the point c in the third figure. , Which means that both the first speed adjustment amount and the second speed adjustment amount are 0.

When the actual value of the ambient temperature detected by the ambient temperature detection module 12 is 35°C, corresponding to the point b in the second figure, the difference in ambient temperature calculated by the first subtraction unit 141 is 10°C. The generating unit 153 multiplies the ambient temperature difference (10) by the first gain value (1) according to the first adjustment rule R1 to generate the first rotation speed adjustment amount, that is, 10 rps.

When the user adjusts the set temperature to -16°C, corresponding to point d in the third figure, the actual value of the set temperature received by the set temperature receiving module 13 is -16°C. Therefore, the set temperature difference calculated by the second subtraction unit 142 is 2°C. The generating unit 153 multiplies the set temperature difference (2) by the second gain value (-2) according to the second adjustment rule R2 to generate a second rotation speed adjustment amount, that is, -4rps.

The generating unit 153 will use the first rotation speed adjustment amount (10rps) and the second rotation speed adjustment amount (-4rps) to adjust the minimum rotation speed. According to actual figures, the minimum speed will be adjusted from the original 30rps to 36rps (30+10-4) based on the first speed adjustment (10rps) and the second speed adjustment (-4rps). Therefore, the minimum rotation speed of the inverter refrigerator 2 can be adjusted adaptively with the ambient temperature and the set temperature, which can not only achieve the effect of maintaining the internal temperature, but also can operate at the lowest rotation speed while maintaining the internal temperature to achieve energy saving. The power of electricity. In practice, the generating unit 153 is communicatively connected to a compressor control module 21 of the inverter refrigerator 2, and the compressor control module 21 adjusts the minimum speed of the inverter refrigerator 2.

For example, the first rotation speed upper limit value VU1 set by the first rotation speed upper limit setting unit 154 is 15. When the ambient temperature difference exceeds 15, the first rotation speed value of the first rotation speed adjustment amount will theoretically exceed 15. The first rotation speed upper limit setting unit 154 makes the first rotation speed value of the first rotation speed adjustment amount not exceed 15, but is maintained at 15 of the first rotation speed upper limit VU1. The first rotational speed lower limit value VD1 set by the first rotational speed lower limit setting unit 155 is to maintain the first rotational speed value at the first rotational speed lower limit VD1 when the first rotational speed value is lower than the first rotational speed lower limit VD1, In order to avoid unlimited increase or decrease of the minimum speed.

In the same way, the second upper limit value VU2 and the second lower limit value VD2 of the second rotation speed set by the second upper limit setting unit 156 and the second lower limit setting unit 157 are also the same, so no further description will be given.

In addition, the minimum rotation speed upper limit setting unit 158 and the minimum rotation speed lower limit setting unit 159 can also set the minimum rotation speed upper limit and the minimum rotation speed lower limit to achieve the same relationship with the first rotation speed upper limit setting unit 154 and the first rotation speed lower limit setting unit 155. And the effect that the second upper limit setting unit 156 and the second lower limit setting unit 157 can achieve.

In addition, another preferred embodiment of the present invention provides a method for adjusting the speed of an inverter refrigerator, which is implemented using the inverter refrigerator speed adjusting system 1 as shown in the first figure, and includes the following steps S101 to S107.

Step S101: Use the storage module to preset an ambient temperature reference value and a set temperature reference value.

Step S102: Use the ambient temperature detection module to detect the actual value of the ambient temperature, and use the set temperature receiving module to receive the actual value of the set temperature.

Step S103: Use the first subtraction unit of the comparison module to subtract the ambient temperature reference value from the actual value of the ambient temperature to calculate the ambient temperature difference, and use the second subtraction unit to subtract the set temperature reference value from the set temperature actual value to Calculate the set temperature difference.

Step S104: Use the rule storage unit of the rotational speed adjustment module to store the first adjustment rule and the second adjustment rule.

Step S105: Using the first upper limit setting unit and the first lower limit setting unit of the rotation speed adjustment module, the first upper limit value and the first lower limit value of the rotation speed are respectively set in the first adjustment rule.

Step S106: Using the second upper limit setting unit and the second lower limit setting unit of the rotation speed adjustment module, the second upper limit value and the second lower limit value of the rotation speed are respectively set in the second adjustment rule.

Step S107: Use the receiving unit to receive the difference between the ambient temperature and the set temperature.

Step S108: Use the generating unit to generate a first rotation speed adjustment amount according to the first adjustment rule and the difference between the ambient temperature, and generate a second rotation speed adjustment amount according to the second adjustment rule and the set temperature difference.

The detailed description of each step has been mentioned in the above paragraphs, so I won't repeat it.

To sum up, the system and method for adjusting the speed of the inverter refrigerator provided by the present invention use the difference between the ambient temperature and the set temperature to generate the first speed adjustment and the second speed adjustment respectively, so as to adjust the minimum speed of the inverter refrigerator. Compared with the prior art, the present invention can adjust the minimum rotation speed of the frequency conversion refrigerator, and the minimum rotation speed of the frequency conversion refrigerator 2 can achieve the effect of maintaining the temperature in the storage room, and achieve the power saving while maintaining the temperature in the storage room. effect.

Through the detailed description of the preferred embodiments above, it is hoped that the characteristics and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, its purpose is to cover various changes and equivalent arrangements within the scope of the patent application for the present invention.

1: Frequency conversion refrigerator speed adjustment system 11: Storage module 12: Ambient temperature detection module 13: Set temperature receiving module 14: Comparison module 141: The first subtraction unit 142: The second subtraction unit 15: Speed adjustment module 151: Rule Storage Unit 152: receiving unit 153: Generating Unit 154: The first rotation speed upper limit setting unit 155: First speed lower limit setting unit 156: Second rotation speed upper limit setting unit 157: Second speed lower limit setting unit 158: Minimum speed upper limit setting unit 159: Minimum speed lower limit setting unit 2: Inverter refrigerator 21: Compressor control module a, b, c, d: point R1: The first adjustment rule R2: Second adjustment rule VU1: Upper limit of the first speed VU2: Upper limit of the second speed VD1: Lower limit of the first speed VD2: The lower limit of the second speed

The first figure is a block diagram showing the speed adjustment system of the inverter refrigerator provided by the preferred embodiment of the present invention; The second figure is a schematic diagram showing the first adjustment rule of the rotational speed adjustment system of the inverter refrigerator provided by the preferred embodiment of the present invention; The third figure is a schematic diagram showing the second adjustment rule of the frequency conversion refrigerator speed adjustment system provided by the preferred embodiment of the present invention; and The fourth figure is a flow chart of the method for adjusting the speed of the inverter refrigerator provided by the preferred embodiment of the present invention.

1: Frequency conversion refrigerator speed adjustment system

11: Storage module

12: Ambient temperature detection module

13: Set temperature receiving module

14: Comparison module

141: The first subtraction unit

142: The second subtraction unit

15: Speed adjustment module

151: Rule Storage Unit

152: receiving unit

153: Generating Unit

154: The first rotation speed upper limit setting unit

155: First speed lower limit setting unit

156: Second rotation speed upper limit setting unit

157: Second speed lower limit setting unit

158: Minimum speed upper limit setting unit

159: Minimum speed lower limit setting unit

2: Inverter refrigerator

21: Compressor control module

Claims (9)

A frequency conversion refrigerator speed adjustment system is used to adjust a minimum speed of a frequency conversion refrigerator, including: A storage module presets an ambient temperature reference value and a set temperature reference value; An ambient temperature detection module for detecting the actual value of an ambient temperature; A set temperature receiving module for receiving an actual value of the set temperature; A comparison module is communicatively connected to the storage module, the ambient temperature detection module and the set temperature receiving module for receiving the ambient temperature reference value, the actual ambient temperature value, the set temperature reference value and the set temperature Set the actual temperature value and include: A first subtraction unit for subtracting the reference value of the ambient temperature from the actual value of the ambient temperature to calculate an ambient temperature difference; and A second subtraction unit for subtracting the set temperature reference value from the set temperature actual value to calculate a set temperature difference; and A speed adjustment module, which is communicatively connected to the comparison module, includes: A rule storage unit storing a first adjustment rule and a second adjustment rule; A receiving unit that receives the difference between the ambient temperature and the set temperature; and A generating unit is electrically connected to the rule storage unit and the receiving unit for generating a first rotation speed adjustment amount according to the difference between the first adjustment rule and the ambient temperature and according to the difference between the second adjustment rule and the set temperature Value to generate a second rotation speed adjustment value, whereby the minimum rotation speed is adjusted by using the first rotation speed adjustment value and the second rotation speed adjustment value; Wherein, in the first adjustment rule, the environmental temperature difference is positively correlated with the first rotational speed adjustment, and the environmental temperature difference is multiplied by a first gain value to calculate the first rotational speed adjustment, and In the second adjustment rule, the set temperature difference is negatively related to the second rotation speed adjustment, and the set temperature difference is multiplied by a second gain value smaller than the first gain value to calculate the first gain value. 2. Speed adjustment amount. The system for adjusting the speed of the inverter refrigerator according to claim 1, wherein the speed adjusting module further includes: A first rotation speed upper limit setting unit is used to set a first rotation speed upper limit value in the first adjustment rule, so that when a first rotation speed value of the first rotation speed adjustment quantity exceeds the first rotation speed upper limit value Maintain the first rotation speed value of the first rotation speed adjustment value at the first rotation speed upper limit value; and A first rotation speed lower limit setting unit for setting a first rotation speed lower limit in the first adjustment rule, so that the first rotation speed value of the first rotation speed adjustment amount is lower than the first rotation speed lower limit Value, the first rotation speed value of the first rotation speed adjustment value is maintained at the first rotation speed lower limit value. The system for adjusting the speed of the inverter refrigerator according to claim 1, wherein the speed adjusting module further includes: A second rotation speed upper limit setting unit is used for setting a second rotation speed upper limit in the second adjustment rule, so that when a second rotation speed value of the second rotation speed adjustment quantity exceeds the second rotation speed upper limit Maintain the second rotation speed value of the second rotation speed adjustment amount at the second rotation speed upper limit value; and A second rotation speed lower limit setting unit is used for setting a second rotation speed lower limit in the second adjustment rule, so that the second rotation speed value of the second rotation speed adjustment amount is lower than the second rotation speed lower limit Value, the second rotation speed value of the second rotation speed adjustment value is maintained at the second rotation speed lower limit value. The system for adjusting the speed of the inverter refrigerator according to claim 1, wherein the speed adjusting module further includes: A minimum rotational speed upper limit setting unit is used to set a minimum rotational speed upper limit, so that when one of the minimum rotational speed values exceeds the minimum rotational speed upper limit, the minimum rotational speed value of the minimum rotational speed is maintained at the minimum Upper limit of speed; and A minimum rotational speed lower limit setting unit is used to set a minimum rotational speed lower limit, so that when the minimum rotational speed value of the minimum rotational speed is lower than the minimum rotational speed lower limit, the minimum rotational speed value of the minimum rotational speed is maintained at the The lower limit of the minimum speed. A method for adjusting the speed of a frequency conversion refrigerator is implemented by using the speed adjustment system of the frequency conversion refrigerator as described in claim 1, and includes the following steps: (a) Use the storage module to preset the ambient temperature reference value and the set temperature reference value; (b) Use the ambient temperature detection module to detect the actual value of the ambient temperature, and use the set temperature receiving module to receive the actual value of the set temperature; (c) Use the comparison module to calculate the difference between the ambient temperature and the set temperature; (d) Using the rotational speed adjustment module to generate the first rotational speed adjustment amount and the second rotational speed adjustment amount according to the first adjustment rule, the ambient temperature difference, the second adjustment rule and the set temperature difference, Therefore, the minimum rotation speed is adjusted by using the first rotation speed adjustment amount and the second rotation speed adjustment amount. The method for adjusting the rotation speed of the inverter refrigerator according to claim 5, wherein, in step (c), the following steps are further included: (c1) Use the first subtraction unit to subtract the ambient temperature reference value from the actual value of the ambient temperature to calculate the ambient temperature difference, and use the second subtraction unit to subtract the set temperature from the actual value of the set temperature The reference value is used to calculate the set temperature difference. The method for adjusting the rotation speed of the inverter refrigerator according to claim 5, wherein, in step (d), the following steps are further included: (d1) using the rule storage unit to store the first adjustment rule and the second adjustment rule, and using the receiving unit to receive the difference between the ambient temperature and the set temperature; and (d2) Using the generating unit to generate the first rotation speed adjustment amount according to the first adjustment rule and the difference between the ambient temperature, and generate the second rotation speed adjustment amount according to the second adjustment rule and the set temperature difference. The method for adjusting the rotational speed of the inverter refrigerator according to claim 7, wherein, in step (d), the following steps are further included: (d3) Using a first rotation speed upper limit setting unit of the rotation speed adjustment module, a first rotation speed upper limit value is set in the first adjustment rule, so that a first rotation speed value of the first rotation speed adjustment value exceeds the When the first rotation speed upper limit value, the first rotation speed value of the first rotation speed adjustment quantity is maintained at the first rotation speed upper limit value, and a first rotation speed lower limit setting unit of the rotation speed adjustment module is used in the first rotation speed adjustment module. A first rotation speed lower limit value is set in the adjustment rule, so that when the first rotation speed value of the first rotation speed adjustment value is lower than the first rotation speed lower limit value, the first rotation speed value of the first rotation speed adjustment value Maintain the lower limit of the first rotation speed. The method for adjusting the rotational speed of the inverter refrigerator according to claim 7, wherein, in step (d), the following steps are further included: (d4) Using a second upper limit setting unit of the rotation speed adjustment module to set a second upper limit value of the rotation speed in the second adjustment rule, so that a second rotation speed value of the second rotation speed adjustment exceeds the At the second upper limit of the rotation speed, the second rotation speed value of the second rotation speed adjustment quantity is maintained at the second rotation speed upper limit, and a second rotation speed lower limit setting unit of the rotation speed adjustment module is used in the second When the second rotation speed value of the rotation speed adjustment value is lower than the second rotation speed lower limit value, the second rotation speed value of the second rotation speed adjustment value is maintained at the second rotation speed lower limit value.

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