CN114279122A - Control method for intelligently reminding dust removal of heat pump system - Google Patents
Control method for intelligently reminding dust removal of heat pump system Download PDFInfo
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- CN114279122A CN114279122A CN202111650405.6A CN202111650405A CN114279122A CN 114279122 A CN114279122 A CN 114279122A CN 202111650405 A CN202111650405 A CN 202111650405A CN 114279122 A CN114279122 A CN 114279122A
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Abstract
A heat pump system intelligent reminding dust removal control method comprises a fin type heat exchanger, wherein a fan blade connected with a direct current motor is arranged on an air outlet surface or an air inlet surface of the fin type heat exchanger, the direct current motor is electrically connected with a heat pump central controller, and the heat pump central controller obtains the rotating speed and pulse value information of the direct current motor when the heat pump system works; the method comprises the following steps: step one, a heat pump central controller of a heat pump system presets an initial rotating speed A0 of a direct current motor and an initial pulse value B0 corresponding to the initial rotating speed A0; step two, when the heat pump system works, the central controller of the heat pump obtains the current actual rotating speed A1 of the direct current motor and the corresponding current actual pulse value B1 under the current actual rotating speed A1; and step three, the central controller of the heat pump judges, and if the initial rotating speed A0 is equal to the current actual rotating speed A1 and the accumulated operating time of the heat pump system is larger than the maximum interval period of dust removal, the step five is carried out. The invention has the characteristic of easy operation.
Description
Technical Field
The invention relates to a control method for intelligently reminding dust removal of a heat pump system.
Background
Chinese patent document No. CN 110940038A discloses a defrosting control method applied to an air conditioner in 03/31/2020, where the air conditioner stores in advance limit current values of each wind level of an external fan, and each limit current value corresponds to a dust removal critical point of the air conditioner when the external fan operates at each wind level; the dust removal control method comprises the following steps: when the air conditioner runs, acquiring a target limit current value corresponding to the current wind shield of the outer fan; acquiring an actual running current value of the outer fan within a first preset time; if the wind shield of the outer fan is not changed within the first preset time, judging whether the actual running current value is smaller than the target limit current value; and if the actual running current value is smaller than the target limit current value, entering a function of reminding the start of a dust removal function. The control method for detecting dust adopts a current value to calculate, and the current value is an analog quantity which is easily influenced by voltage fluctuation, so that the detection value is not accurate enough, and misoperation is easy to occur in actual operation, and the improvement is needed.
Disclosure of Invention
The invention aims to provide an easy-to-operate control method for intelligently reminding a heat pump system to remove dust, so as to overcome the defects in the prior art.
The intelligent reminding and dedusting control method of the heat pump system is designed according to the purpose, and is characterized in that the heat pump system comprises a finned heat exchanger, fan blades connected with a direct current motor are arranged on the air outlet surface or the air inlet surface of the finned heat exchanger, the direct current motor is electrically connected with a heat pump central controller, and the heat pump central controller obtains the rotating speed and pulse value information of the direct current motor when the heat pump system works;
the operation comprises the following steps:
step one, a heat pump central controller of a heat pump system presets an initial rotating speed A0 of a direct current motor and an initial pulse value B0 corresponding to the initial rotating speed A0;
step two, when the heat pump system works, the central controller of the heat pump obtains the current actual rotating speed A1 of the direct current motor and the corresponding current actual pulse value B1 under the current actual rotating speed A1;
step three, the central controller of the heat pump judges,
if the initial rotating speed A0 is equal to the current actual rotating speed A1 and the accumulated operating time of the heat pump system is larger than the maximum interval period of dust removal, entering the step five, and otherwise, entering the step four;
the accumulated operation time refers to the accumulated operation time of the heat pump system from the last dust removal end to the present, and the accumulated operation time is cleared when the dust removal is performed;
step four, the heat pump system operates normally; entering the step two;
step five, judging by the central controller of the heat pump, judging that the surface of the finned heat exchanger is blocked when the relation between the initial pulse value B0 and the current actual pulse value B1 meets the condition that | B1-B0| B0 is not less than C, and entering the step six, otherwise, entering the step four; wherein C is a dedusting threshold value, and the value range of C is 5-20%;
and step six, the central controller of the heat pump sends out a cleaning prompt, and the step four is carried out.
The heat pump central controller is internally provided with an initial rotating speed A0 of a preset direct current motor and an initial pulse value B0 corresponding to the initial rotating speed A0, and the heat pump central controller timely reads the rotating speed A1 and the pulse value B1 of the direct current motor in the operation process of a heat pump; when the finned heat exchanger is blocked due to dust or impurities, the current actual pulse value B1 corresponding to the current actual rotating speed A1 is obtained through a central controller of the heat pump;
when the initial rotating speed A0 is equal to the current actual rotating speed A1, the pulse of the direct current motor for driving the fan to rotate increases along with the increase of the severity of dust or sundries on the finned heat exchanger, and when the relationship between the initial pulse value B0 and the current actual pulse value B1 meets the condition that | B1-B0|/B0 is not less than C, and the accumulated operating time of the heat pump system is greater than the maximum interval period of dust removal, the central controller of the heat pump sends a prompt to the line controller to remind a client or after sale of cleaning dust or sundries on the finned heat exchanger of the heat pump. The foreign matter may include frost or ice condensed on the fin heat exchanger.
In conclusion, the invention has the characteristic of easy operation.
Drawings
Fig. 1 is a control flow chart according to an embodiment of the invention.
Fig. 2 is a graph of the relationship between pulse value and capacity fade in the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to fig. 1-2, the control method for intelligently reminding dust removal of a heat pump system is characterized in that the heat pump system comprises a fin-type heat exchanger, a fan blade connected with a direct current motor is arranged on an air outlet surface or an air inlet surface of the fin-type heat exchanger, the direct current motor is electrically connected with a heat pump central controller, and the heat pump central controller obtains information of the rotating speed and the pulse value of the direct current motor when the heat pump system works;
the operation comprises the following steps:
step one, a heat pump central controller of a heat pump system presets an initial rotating speed A0 of a direct current motor and an initial pulse value B0 corresponding to the initial rotating speed A0;
step two, when the heat pump system works, the central controller of the heat pump obtains the current actual rotating speed A1 of the direct current motor and the corresponding current actual pulse value B1 under the current actual rotating speed A1;
step three, the central controller of the heat pump judges,
if the initial rotating speed A0 is equal to the current actual rotating speed A1 and the accumulated operating time of the heat pump system is larger than the maximum interval period of dust removal, entering the step five, and otherwise, entering the step four;
the accumulated operation time refers to the accumulated operation time of the heat pump system from the last dust removal end to the present, and the accumulated operation time is cleared when the dust removal is performed;
step four, the heat pump system operates normally; entering the step two;
step five, judging by the central controller of the heat pump, judging that the surface of the finned heat exchanger is blocked when the relation between the initial pulse value B0 and the current actual pulse value B1 meets the condition that | B1-B0| B0 is not less than C, and entering the step six, otherwise, entering the step four; wherein C is a dedusting threshold value, and the value range of C is 5-20%.
The dust removal threshold C can be selected according to the curve in fig. 2. The curve represents the dusting threshold C.
The dust removal threshold C is (B-16000)/16000, and a point on the curve corresponding to the capacity degradation of 30% may be generally used as the dust removal threshold C selected by us. Thus, according to FIG. 2, a 30% capacity fade corresponds to a pulse value B of 17900, resulting in a dusting threshold C of about 12%.
And step six, the central controller of the heat pump sends out a cleaning prompt, and the step four is carried out.
In the sixth step, after the central controller of the heat pump sends out a cleaning prompt, no matter whether the fin type heat exchanger is cleaned by a user or after sale, the fourth step is carried out. This operation does not affect the normal operation of the heat pump.
Of course, in the sixth step, a forced cleaning step may also be added, and the fourth step is only performed after the finned heat exchanger is cleaned by a user or after sale, so that the method may improve the energy efficiency of the heat pump, but may affect the normal operation of the heat pump. The heat pump does not work because the cleaning is not carried out, and the heat pump can work only after the cleaning, so that the normal work of the heat pump is influenced.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for the convenience of description and simplicity of description, rather than to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention, the terms "first" and "second" are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The heat pump system intelligent reminding dust removal control method is characterized in that the heat pump system comprises a fin-type heat exchanger, a fan blade connected with a direct current motor is arranged on an air outlet surface or an air inlet surface of the fin-type heat exchanger, the direct current motor is electrically connected with a heat pump central controller, and when the heat pump system works, the heat pump central controller obtains the rotating speed and pulse value information of the direct current motor;
the operation comprises the following steps:
step one, a heat pump central controller of a heat pump system presets an initial rotating speed A0 of a direct current motor and an initial pulse value B0 corresponding to the initial rotating speed A0;
step two, when the heat pump system works, the central controller of the heat pump obtains the current actual rotating speed A1 of the direct current motor and the corresponding current actual pulse value B1 under the current actual rotating speed A1;
step three, the central controller of the heat pump judges,
if the initial rotating speed A0 is equal to the current actual rotating speed A1 and the accumulated operating time of the heat pump system is larger than the maximum interval period of dust removal, entering the step five, and otherwise, entering the step four;
the accumulated operation time refers to the accumulated operation time of the heat pump system from the last dust removal end to the present, and the accumulated operation time is cleared when the dust removal is performed;
step four, the heat pump system operates normally; entering the step two;
step five, judging by the central controller of the heat pump, judging that the surface of the finned heat exchanger is blocked when the relation between the initial pulse value B0 and the current actual pulse value B1 meets the condition that | B1-B0| B0 is not less than C, and entering the step six, otherwise, entering the step four; wherein C is a dedusting threshold value, and the value range of C is 5-20%;
and step six, the central controller of the heat pump sends out a cleaning prompt, and the step four is carried out.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650405.6A CN114279122A (en) | 2021-12-29 | 2021-12-29 | Control method for intelligently reminding dust removal of heat pump system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111650405.6A CN114279122A (en) | 2021-12-29 | 2021-12-29 | Control method for intelligently reminding dust removal of heat pump system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204987810U (en) * | 2015-07-01 | 2016-01-20 | 河南佰衡节能技术有限公司 | Heat pump is dust purification device for drying system |
| CN112344622A (en) * | 2020-11-06 | 2021-02-09 | 中山市爱美泰电器有限公司 | Intelligent defrosting device of heat pump system and control method thereof |
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2021
- 2021-12-29 CN CN202111650405.6A patent/CN114279122A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204987810U (en) * | 2015-07-01 | 2016-01-20 | 河南佰衡节能技术有限公司 | Heat pump is dust purification device for drying system |
| CN112344622A (en) * | 2020-11-06 | 2021-02-09 | 中山市爱美泰电器有限公司 | Intelligent defrosting device of heat pump system and control method thereof |
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