CN107894062B - Control method of mobile air conditioner and mobile air conditioner - Google Patents
Control method of mobile air conditioner and mobile air conditioner Download PDFInfo
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- CN107894062B CN107894062B CN201711107051.4A CN201711107051A CN107894062B CN 107894062 B CN107894062 B CN 107894062B CN 201711107051 A CN201711107051 A CN 201711107051A CN 107894062 B CN107894062 B CN 107894062B
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Abstract
The invention discloses a control method of a mobile air conditioner and the mobile air conditioner controlled by the method, the mobile air conditioner comprises a compressor, an indoor fan, an outdoor fan, a water-fetching motor and an indoor heat exchanger, the control method comprises a defrosting program, and the defrosting program comprises the following steps: in the refrigeration operation process of the mobile air conditioner, if the difference value between the indoor environment temperature T1 and the indoor heat exchanger tube temperature T2 is not less than the first temperature value A and the indoor heat exchanger tube temperature T2 is not greater than the second temperature value B, it is determined that the indoor heat exchanger needs to be defrosted and the defrosting mode is entered. According to the control method of the mobile air conditioner, the energy consumption can be reduced.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a control method of a mobile air conditioner and the mobile air conditioner.
Background
The mobile air conditioner runs for a period of time, the ambient temperature is gradually close to the set temperature, when the temperature difference between the ambient temperature and the set temperature reaches a certain interval, the energy demand output by the mobile air conditioner is gradually reduced, if the mobile air conditioner still outputs large power, the energy consumption is wasted, the air supply temperature is interfered, and the comfort is reduced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a control method of a mobile air conditioner, which can reduce energy consumption.
According to the control method of the mobile air conditioner provided by the embodiment of the invention, the mobile air conditioner comprises a compressor, an indoor fan, an outdoor fan, a water supply motor and an indoor heat exchanger, the control method comprises a defrosting program, and the defrosting program comprises the following steps: in the refrigeration running process of the mobile air conditioner, if the difference TK between the indoor environment temperature T1 and the indoor heat exchanger tube temperature T2 is not less than the first temperature value A and the indoor heat exchanger tube temperature T2 is not greater than the second temperature value B, it is determined that the indoor heat exchanger needs to be defrosted and enters a defrosting mode.
According to the control method of the mobile air conditioner, the energy consumption can be reduced.
In addition, the control method of the mobile air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
in one embodiment of the present invention, the defrosting procedure comprises: and in a first preset time C, if the pipe temperature T2 of the indoor heat exchanger is not greater than a second temperature value B in a second preset time D, stopping the compressor, the water-fetching motor and the outdoor fan, and maintaining the indoor fan at a rotating speed E, wherein the first preset time C is greater than the second preset time D.
In one embodiment of the present invention, the first predetermined time C is in the range of 1 minute to 10 minutes, and the second predetermined time D is in the range of 20 seconds to 5 minutes.
In one embodiment of the present invention, the defrosting procedure comprises: detecting the indoor heat exchanger tube temperature T2 every third predetermined time F, and if the indoor heat exchanger tube temperature T2 is not less than the third temperature value G, exiting the defrosting procedure and entering a recovery mode.
In one embodiment of the present invention, the third predetermined time F is in a range of 5 seconds to 60 seconds.
In one embodiment of the invention, the recovery mode comprises: the outdoor fan and the water supply motor are recovered to the values before defrosting, and the compressor runs at a first set frequency H.
In an embodiment of the present invention, after entering the recovery mode for the fourth predetermined time I, the indoor heat exchanger tube temperature T2 is detected every fifth predetermined time J, and when the indoor heat exchanger tube temperature T2 is not less than the third temperature value G, the recovery mode is exited.
In one embodiment of the present invention, after exiting the recovery mode, the compressor is operated at a second set frequency K.
In one embodiment of the invention, said first temperature value a is in the range of 1 ℃ to 5 ℃.
The invention also provides a mobile air conditioner which comprises a compressor, an indoor fan, an outdoor fan and a water pumping motor and is characterized by further comprising a controller arranged according to the control method of the mobile air conditioner in the embodiment.
Drawings
Fig. 1 is a flow chart of a control method according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The mobile air conditioner runs for a period of time, the ambient temperature is gradually close to the set temperature, when the temperature difference between the ambient temperature and the set temperature reaches a certain interval, the energy demand output by the mobile air conditioner is gradually reduced, if the mobile air conditioner still outputs large power, the energy consumption is wasted, the air supply temperature is interfered, and the comfort is reduced.
The invention discloses a method for defrosting an air conditioner, which can be needed to defrost the air conditioner in the running process of the air conditioner, so that the air conditioner needs to be defrosted at a proper time.
Referring to fig. 1, a control method of a mobile air conditioner according to an embodiment of the present invention, the mobile air conditioner including a compressor, an indoor fan, an outdoor fan, a water supply motor, and an indoor heat exchanger, includes a defrosting process including:
in the refrigeration running process of the mobile air conditioner, if the difference TK between the indoor environment temperature T1 and the indoor heat exchanger tube temperature T2 is not less than the first temperature value A and the indoor heat exchanger tube temperature T2 is not greater than the second temperature value B, it is determined that the indoor heat exchanger needs to be defrosted and enters a defrosting mode.
According to the control method provided by the embodiment of the invention, the difference between the indoor environment temperature T1 and the indoor heat exchanger tube temperature T2 is compared, so that the control is easier and more convenient, and the defrosting efficiency is high.
The difference TK in the invention is | T1-T2 |.
Meanwhile, the indoor heat exchanger tube temperature T2 is also adopted as a determination standard, that is, when freezing or frosting occurs, the temperature of the indoor heat exchanger tube temperature T2 is relatively low, and for different types of mobile air conditioners, the temperature of the indoor heat exchanger tube temperature T2 when defrosting is required is different, for example, the second temperature value B is set to-10 ℃ to 10 ℃ or the like.
Therefore, whether defrosting is needed or not is judged through the combined action of the difference TK between the indoor environment temperature T1 and the indoor heat exchanger tube temperature T2 and the indoor heat exchanger tube temperature T2, the defrosting efficiency can be improved, and noise and energy consumption are reduced.
In some embodiments of the invention, as shown in fig. 1, the defrosting procedure comprises: and in a first preset time C, if the difference TK is not less than the first temperature value A in a second preset time D, stopping the compressor, the water fetching motor and the outdoor fan, and maintaining the indoor fan at a rotating speed E (for example, 20% to 100% of the rated rotating speed), wherein the first preset time C is greater than the second preset time D. Whether defrosting is required is determined by the detection result in a period of time.
In addition, whether defrosting is required or not may be determined in other manners, for example, when the indoor heat exchanger tube temperature T2 is not greater than the second temperature value B, the indoor ambient temperature T1 and the indoor heat exchanger tube temperature T2 are continuously detected, and defrosting is started as long as the difference TK is continuously smaller than the first temperature value a for the second predetermined time D, and for example, the indoor ambient temperature T1 and the indoor heat exchanger tube temperature T2 are continuously detected for the second predetermined time D, and the average value of the difference TK is compared with the first temperature value a, so that whether defrosting is actually required or not is determined. Of course, other determination methods may be used, and the present invention is not limited to this.
In addition, during the continuous operation of the air conditioner (mobile air conditioner, etc.), the defrosting program may be continuously operated, or the defrosting may be intermittently operated, for example, the determination of the next defrosting is started at a certain time interval after the completion of one defrosting. For another example, the defrosting is performed only if the differences TK are all smaller than the first temperature value a within a certain time period.
In addition, the invention can also adopt other modes by stopping the compressor, the water-fetching motor and the outdoor fan and maintaining the rotating speed E of the indoor fan to defrost, for example, when the compressor is an inverter compressor, the frequency of the compressor can be reduced. Only that defrosting can be achieved.
Further, the first predetermined time C is in the range of 1 minute to 10 minutes, and the second predetermined time D is in the range of 20 seconds to 5 minutes. The accuracy of the detection result is improved.
Further, the defrosting procedure comprises: detecting the indoor heat exchanger tube temperature T2 every third predetermined time F, and if the indoor heat exchanger tube temperature T2 is not less than the third temperature value G, exiting the defrosting procedure and entering a recovery mode.
Preferably, the third predetermined time F is in the range of 5 seconds to 60 seconds.
Wherein the recovery mode comprises: the outdoor fan and the water supply motor are recovered to the values before defrosting, and the compressor runs at a first set frequency H.
Further, after entering the recovery mode for the fourth predetermined time I, the indoor heat exchanger tube temperature T2 is detected every fifth predetermined time J, and when the indoor heat exchanger tube temperature T2 is not less than the third temperature value G, the recovery mode is exited.
Advantageously, after exiting the recovery mode, the compressor is operated at a second set frequency K. Wherein, the first predetermined frequency H may be greater than the second set frequency K.
Of course, the first predetermined frequency H may be set to be less than or equal to the second set frequency K.
In some embodiments of the present invention, the indoor ambient temperature T1 and the indoor heat exchanger tube temperature T2 are detected at intervals of a predetermined time period (e.g., the third predetermined time F) in the defrosting procedure, the predetermined time period being in a range of 5 seconds to 60 seconds. Therefore, the frequency of detection is shortened, the energy consumption can be reduced, and the detection error and the useless value are eliminated.
Further, the first temperature value a is in the range of 1 ℃ to 5 ℃. For example, the first temperature value a is set to 1 ℃, 3 ℃, 5 ℃, etc., but of course, the first temperature value a may be less than 1 ℃ or greater than 5 ℃, as long as it can be determined with relative accuracy whether defrosting is necessary. And may be selected according to the actual use or design.
In some embodiments of the invention, the defrosting process is started after the mobile air conditioner is operated in a cooling mode for a sixth preset time. The main reason is that the defrosting process does not need to be performed because the possibility of frost formation is low when the air conditioner starts to operate. Generally, when a comparison value TC between the indoor ambient temperature and the set temperature TS reaches a predetermined value, defrosting is required, or when the indoor ambient temperature approaches or is maintained within the set temperature TS, defrosting is required.
In addition, in other embodiments of the present invention, in the cooling operation of the mobile air conditioner, if the comparison value TC of the indoor ambient temperature T1 and the set temperature TS is not greater than the fourth temperature value, the defrosting process is entered. Of course, after entering the defrosting procedure, the defrosting procedure is not necessarily operated continuously, but may be operated intermittently, as described above.
Further, the fourth predetermined temperature is in the range of 1 ℃ to 3 ℃.
Further preferably, the defrosting process is entered after the comparison value TC is not greater than the fourth predetermined temperature for a predetermined period of time.
In addition, the invention also comprises a mobile air conditioner which comprises a compressor, an indoor fan, an outdoor fan and a water-fetching motor, and the mobile air conditioner also comprises a controller which is arranged according to the control method of the mobile air conditioner in the embodiment. Specifically, the controller is set up using the defrost method described above.
The invention can ensure that the mobile air conditioner keeps outputting proper power in operation and ensures comfort. When the ambient temperature reaches the set temperature, the intelligent control of the output power of the variable-frequency mobile air conditioner is realized, so that the mobile air conditioner is comfortable, and the energy consumption is reduced.
When the mobile air conditioner normally operates, the T1 indoor environment temperature sensor detects the indoor environment temperature, compares the indoor environment temperature with the set temperature of the mobile air conditioner, and enters a control mode when the difference value between the indoor environment temperature and the set temperature of the mobile air conditioner is less than or equal to A ℃. The frequency conversion compressor starts to adjust the frequency, runs at low frequency and controls the output power of the compressor. The rotating speed of the indoor fan is adjusted, the rotating speed of the outdoor fan is adjusted, the output of the compressor is matched, the soft air supply temperature is moderate, the heat can be taken away by exhaust, and the power consumption of the indoor fan and the power consumption of the outdoor fan are reduced. The water pumping motor adjusts the rotating speed, the output of the compressor is matched, the water pumping effect is controlled, the condensed water consumption speed is appropriate, the output of the compressor after frequency reduction can be matched, and the heat dissipation requirement is met.
When the difference value between the detected temperature of the indoor environment temperature sensor and the set temperature is F ℃, F belongs to temperature compensation and is used for compensating the temperature difference between the environment temperature detected by the indoor environment temperature sensor and the environment temperature around the user. And at the moment, a compensation mode is entered, the variable frequency compressor keeps low-frequency operation, the water pumping motor keeps low rotating speed, the indoor fan keeps low rotating speed, the outdoor fan keeps low rotating speed, and the output power of the compressor is adapted.
When the difference value between the environment temperature detected by the indoor environment temperature sensor and the temperature detected by the indoor heat exchanger tube temperature sensor is greater than or equal to A ℃ and the indoor heat exchanger tube temperature T2 is not greater than the second temperature value B, the indoor heat exchanger is judged to be frosted or frozen, and a defrosting procedure is started at the moment. Continuously detecting for M minutes (first preset time C), when the temperature difference TK more than N seconds (second preset time D) continuously appears in the M minutes and is larger than or equal to the first temperature value A, stopping the variable frequency compressor, stopping the water fetching motor, stopping the outdoor fan, and keeping the indoor fan to operate at the rotating speed E (such as high speed), and starting to detect the temperature difference every preset time.
In the present invention, the indoor fan, the outdoor fan and the water pump motor may have different gears, for example, three gears (high speed, low speed, medium speed) are set. The indoor fan, the outdoor fan and the water beating motor can be operated according to 50% of the rated rotating speed (for example, within the range of 10% to 50%) by adopting a stepless speed change mode when the rotating speed needs to be reduced.
In addition, the first temperature value a in the present invention may be in the range of 0 to 5 ℃, the second temperature value B may be in the range of-10 ℃ to 10 ℃, the third temperature value G may be in the range of 5 to 15 ℃, the second set frequency may be a frequency before defrosting of the compressor, and the first set frequency is greater than the second set frequency. The first predetermined time C, the second predetermined time D, the third predetermined time F, the fourth predetermined time I, and the fifth predetermined time J may be in the range of 5s to 10 minutes.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A control method of a mobile air conditioner, the mobile air conditioner comprises a compressor, an indoor fan, an outdoor fan, a water-fetching motor and an indoor heat exchanger, and is characterized in that the control method comprises a defrosting program, and the defrosting program comprises the following steps:
in the refrigeration running process of the mobile air conditioner, if the difference TK between the indoor environment temperature T1 and the indoor heat exchanger tube temperature T2 is not less than a first temperature value A and the indoor heat exchanger tube temperature T2 is not more than a second temperature value B, the indoor heat exchanger is judged to need defrosting and enters a defrosting mode,
and in a first preset time C, if the pipe temperature T2 of the indoor heat exchanger is not greater than a second temperature value B in a second preset time D, stopping the compressor, the water-fetching motor and the outdoor fan, and maintaining the indoor fan at a rotating speed E, wherein the first preset time C is greater than the second preset time D.
2. The control method of a mobile air conditioner according to claim 1, wherein the first predetermined time C is in the range of 1 minute to 10 minutes, and the second predetermined time D is in the range of 20 seconds to 5 minutes.
3. The control method of a mobile air conditioner according to claim 1, wherein the defrosting program includes:
detecting the indoor heat exchanger tube temperature T2 every third predetermined time F, and if the indoor heat exchanger tube temperature T2 is not less than the third temperature value G, exiting the defrosting procedure and entering a recovery mode.
4. The control method of a mobile air conditioner according to claim 3, wherein the third predetermined time F is in a range of 5 seconds to 60 seconds.
5. The control method of a mobile air conditioner according to claim 3, wherein the recovery mode includes: the outdoor fan and the water supply motor are recovered to the values before defrosting, and the compressor runs at a first set frequency H.
6. The control method of a mobile air conditioner according to claim 5, wherein after entering the recovery mode for the fourth predetermined time I, the indoor heat exchanger tube temperature T2 is detected every fifth predetermined time J, and when the indoor heat exchanger tube temperature T2 is not less than the third temperature G, the recovery mode is exited.
7. The control method of claim 6, wherein the compressor is operated at the second set frequency K after exiting the recovery mode.
8. The control method of a mobile air conditioner according to any one of claims 1-7, wherein the first temperature value A is in a range of 1 ℃ to 5 ℃.
9. A mobile air conditioner comprising a compressor, an indoor fan, an outdoor fan and a water-pumping motor, characterized in that the mobile air conditioner further comprises a controller according to the control method of the mobile air conditioner of any one of claims 1 to 8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109798634B (en) * | 2019-01-30 | 2021-01-08 | 海信家电集团股份有限公司 | Defrosting method of air conditioner and air conditioner |
| CN111059698A (en) * | 2019-12-09 | 2020-04-24 | 珠海格力电器股份有限公司 | Air conditioner electric heating defrosting control method, computer readable storage medium and air conditioner |
| CN111425993A (en) * | 2020-04-14 | 2020-07-17 | 宁波奥克斯电气股份有限公司 | Snow accumulation preventing method and device for air conditioner and air conditioner |
| CN111623483A (en) * | 2020-04-28 | 2020-09-04 | 海信（山东）空调有限公司 | Air conditioner and protection method thereof |
| CN114413436A (en) * | 2022-01-10 | 2022-04-29 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device for air conditioner internal unit and air conditioner |
| CN115234989A (en) * | 2022-07-20 | 2022-10-25 | 青岛海尔空调器有限总公司 | Mobile air conditioner and control method thereof |
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