CN102563811A - Control method of PTC (positive temperature coefficient) electric heater for heat pump air conditioner - Google Patents
Control method of PTC (positive temperature coefficient) electric heater for heat pump air conditioner Download PDFInfo
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- CN102563811A CN102563811A CN2012100141034A CN201210014103A CN102563811A CN 102563811 A CN102563811 A CN 102563811A CN 2012100141034 A CN2012100141034 A CN 2012100141034A CN 201210014103 A CN201210014103 A CN 201210014103A CN 102563811 A CN102563811 A CN 102563811A
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Abstract
A control method of PTC (positive temperature coefficient) electric heater for heat pump air conditioner is characterized in that the PTC electric heater can be started up under the conditions that the air conditioner works in a heating mode, that an indoor blower fan operates continuously for 1min or longer, and that the temperature of an indoor coil pipe is lower than 45 DEG C; and the PTC electric heater is shut down under the condition that the air conditioner changes the working mode or is powered off, or that an indoor ambient temperature sensor fails, or that an indoor coil pipe temperature sensor fails. The inventive control method makes the air conditioner effective, energy-saving, temperature-constant, and safe overall, and the PTC electric heater has long service life.
Description
Technical field
The present invention relates to a kind of control method that is used for the PTC electric heater of heat pump air conditioner, belong to the control field of air-conditioning.
Background technology
PTC (Positive Temperature Coefficient; Be called for short PTC; Positive temperature coefficient) material is the semiconductor resistor that a kind of typical case has temperature sensitivity, and when surpassing certain temperature (Curie temperature), its resistance value is along with the rising of temperature is increasing of step evolution.
The PTC electric heater has utilized the above-mentioned positive temperature characterisitic of ptc material exactly, and promptly when reaching uniform temperature value (curie point), its resistance raises suddenly, makes electric current decline power reduction, reaches the purpose of automatic constant-temperature.Therefore, the PTC electric heater can overheated, not produce naked light, receives the influence of voltage pulsation little, safe in utilization energy-conservation, is used on the firing equipment more and more.
The PTC electric heater is used for the assistant heating of air-conditioning, can thoroughly solve the common air-conditioning winter severe cold and heat a not enough difficult problem season.The heat pump system of PTC electric heater and air-conditioning is warm to be system fully independently, and they are actually to work alone separately and are independent of each other, and just start simultaneously.When ambient temperature is low excessively the air-conditioner air outlet temperature is crossed when low, air-conditioning provides warm braw through the heating of PTC electric heater.
Yet, how to control the PTC electric heater, make it regulate indoor temperature rightly, reach rapid, the powerful purpose that heats, be still a great problem.
Summary of the invention
The invention reside in solve the PTC electric heater how to be applied in make on the air-conditioning that air-conditioning is totally more effectively energy-conservation, constant temperature, security problems.
For this reason, the invention provides a kind of control method that is used for the PTC electric heater of heat pump air conditioner, the PTC electric heater meets the following conditions simultaneously and just opens:
1. air-conditioning work is under heating mode;
2. indoor fan running, and move continuously more than or equal to 1min;
3. indoor coil pipe is < 45 ℃;
4. if the PTC electric heater cuts out, then needed to open again behind the 1min.
Air-conditioning work is not opened electrical heating under other patterns such as refrigeration mode, dehumidification mode, air vent mode; Have only under the heating mode, indoor when needing heat, just can satisfy one of electrical heating unlocking condition.
Air-conditioning work is under heating mode, when very low as if outdoor environment temperature, as below 10 ℃; This moment is during operation of air conditioner, indoor coil pipe also can be very low (45 ℃), this moment, the air-conditioning leaving air temp also can be very low; The heating capacity of air-conditioning is very poor, needs this moment the PTC electrical heating to open, and improves heating capacity.If outdoor environment temperature is when higher, as 10 ℃ on the upper side the time, this moment, indoor coil pipe was higher, and during greater than 45 ℃, the air-conditioning leaving air temp is higher, and the heating capacity of air-conditioning is better, and need not open the PTC electrical heating this moment.The PTC electric heater is high-power energy dissipation device, so unnecessaryly under heating mode open, increase kwh loss always.The PTC electric heater is opened when the heating capacity of air-conditioning is very poor, when heating capacity is high, closes, and can make air-conditioning effectively energy-conservation like this.
After indoor fan is opened under the heating mode, and move 1min continuously, the rotating speed the when slow-speed of revolution is steadily to normal operation when letting indoor fan from startup; Because the PTC electric heater is a heater members, environment temperature is very high after opening, and caloric requirement produces air quantity through the blower fan rotation it is blown away.Indoor fan is not opened as if opening at electric heater, and heat is not just in time dissipated, easy heat damage of the working of plastics of air-conditioning even burning., indoor fan opens electric heater again after opening, this control sequence, and the heat that produces in the time of in time taking away the operation of PTC electric heater has promptly increased heat, can make the safer of air-conditioner operation again.
In addition, in the control method of PTC electric heater of the present invention, in the compressor operating process,, then needed to open again behind the 1min if the PTC electric heater cuts out.Like this, can prevent that the PTC electric heater from receiving thermal shock, thereby prolong its life-span.
What the PTC electric heater met the following conditions closes first:
1. air-conditioning work pattern conversion or shutdown;
2. indoor temperature transmitter fault;
3. indoor coil sensor fault;
4. indoor fan fault;
5. indoor fan is not opened;
6. indoor coil pipe>50 ℃.
Air-conditioning heating mode, refrigeration mode, dehumidification mode, when the conversion of air vent mode isotype is confirmed not
Opening electric heater, electric heater is in closed condition, prevents that the PTC electric heater from the conversion that the opening and closing state does not stop, preventing big dash current, effectively protects the PTC electric heater.
When indoor temperature transmitter, indoor coil (temperature) sensor damage, can not monitor temperature the time; Should close the PTC electric heater; After preventing that the PTC electric heater from opening, satisfy not exit criteria (indoor coil pipe>50 ℃), caused the PTC electric heater to be opened always.Like this, even indoor temperature sensor, indoor coil sensor are bad, also to control the PTC electric heater effectively.
When indoor fan fault or indoor fan were not opened, the caloric value of PTC electric heater can not blow away, and the working of plastics to air-conditioning causes damage easily; Should close electric heater this moment, guarantees the safety of air-conditioner.
If outdoor environment temperature is higher, as 10 ℃ on the upper side the time, the inner coil pipe temperature is also higher, and as greater than 50 ℃ the time, the air-conditioning leaving air temp is higher, and the heating capacity of air-conditioning is better, and need not open the PTC electric heater this moment, can make air-conditioning effectively energy-conservation like this.
If electric heater opening and closing temperature spot is identical, can cause indoor coil pipe open and close back and forth when this temperature spot just, be unfavorable for electric heater control.Therefore; Among the present invention; The PTC electric heater needs indoor coil pipe (less than 45 ℃) to need the numerical value of indoor coil pipe (greater than 50 ℃) different when cutting out with the PTC electric heater when opening; A return difference control is arranged when the opening and closing of PTC electric heater like this, more effectively control the operation of PTC electric heater.
Description of drawings
Further specify the present invention below in conjunction with the accompanying drawing and the specific embodiment.
Fig. 1 is the schematic diagram of the control method of PTC electric heater of the present invention;
Fig. 2 is an open operation flow chart in the control method of PTC electric heater of the present invention;
Fig. 3 is a shutoff operation flow chart in the control method of PTC electric heater of the present invention.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, in the control method of PTC electric heater of the present invention, microprocessor M37546 carries out the indoor coil pipe collection, carries out indoor environment temperature collection, indoor fan control, the control of PTC electric heater.
As shown in Figure 2, in the control method of PTC electric heater of the present invention, the open operation of PTC electric heater is following:
Does step 1: whether heating mode move air-conditioner? If then forward step 2 to; If not, then forward step 6 to.
Does step 2: whether the indoor fan of air-conditioning move 1min continuously? If then forward step 3 to; If not, then forward step 6 to.
Step 3: is indoor coil pipe less than 45 ℃? If then forward step 4 to; If not, then forward step 6. to
Whether does the step 4:PTC electric heater shut-in time surpass 1min? If then forward step 5 to; If not, then forward step 6. to
Step 5:PTC electric heater is opened.
Step 6; Finish, do not open electrical heating.
As shown in Figure 3, in the control method of PTC electric heater of the present invention, the shutoff operation of PTC electric heater is following:
Does step 1: air-conditioner shut down or the pattern conversion? If not, then forward step 2 to; If then forward step 8 to.
Does step 2: indoor temperature transmitter have fault? If do not have, then forward step 3 to; If have, then forward step 8 to.
Does step 3: the indoor coil sensor have fault? If do not have, then forward step 4 to; If have, then forward step 8. to
Does step 4: indoor fan have fault? If do not have, then forward step 5 to; If have, then forward step 8 to.
Does not step 5: whether indoor fan start? If open, then forward step 6 to; If do not open, then forward step 8 to.
Step 6: is indoor coil pipe greater than 50 ℃? If not, then forward step 7 to; If then forward step 8 to.
Step 7: keep the electric heater opening.
Step 8: close the PTC electric heater, withdraw from.
More than be one of embodiment of the present invention,, do not spend performing creative labour, on the basis of the foregoing description, can do multiple variation, can realize the object of the invention equally for those skilled in the art.But this variation obviously should be in the protection domain of claims of the present invention.
Claims (2)
1. control method that is used for the PTC electric heater of heat pump air conditioner is characterized in that the unlatching that meets the following conditions simultaneously of PTC electric heater:
Air-conditioning work is under heating mode;
< 45 ℃ of indoor coil pipe;
The indoor fan running, and move continuously more than or equal to 1min;
If the PTC electric heater cuts out, then needed to open again behind the 1min.
2. a kind of control method that is used for the PTC electric heater of heat pump air conditioner as claimed in claim 1, what it is characterized in that the PTC electric heater meets the following conditions closes first:
Conversion of air-conditioning work pattern or shutdown;
The indoor environment temperature sensor fault;
The indoor coil pipe sensor fault;
The indoor fan fault;
Indoor fan is not opened;
Indoor coil pipe>50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100141034A CN102563811A (en) | 2012-01-18 | 2012-01-18 | Control method of PTC (positive temperature coefficient) electric heater for heat pump air conditioner |
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| CN2012100141034A CN102563811A (en) | 2012-01-18 | 2012-01-18 | Control method of PTC (positive temperature coefficient) electric heater for heat pump air conditioner |
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| CN102563811A true CN102563811A (en) | 2012-07-11 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940048A (en) * | 2014-05-12 | 2014-07-23 | 珠海格力电器股份有限公司 | Control method and control system for electric heating of air conditioner |
| CN104110780A (en) * | 2013-10-22 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner and control method and system for electric auxiliary heating thereof |
| CN104596022A (en) * | 2014-09-29 | 2015-05-06 | 宁波奥克斯空调有限公司 | Control method for auxiliary electric heating of air conditioner |
| CN104864542A (en) * | 2014-02-20 | 2015-08-26 | 广东美的制冷设备有限公司 | Method for controlling electric heating of air conditioner, control device and air conditioner |
| CN106500285A (en) * | 2015-09-08 | 2017-03-15 | 周峙东 | A kind of old-fashioned air conditioner electric concurrent heating system, control method and its air-conditioner |
| CN106545960A (en) * | 2016-10-18 | 2017-03-29 | 广东美的暖通设备有限公司 | New blower control method and new blower fan |
| CN107355852A (en) * | 2017-06-21 | 2017-11-17 | 上海交通大学 | Double small temperature difference heat exchange blower fan coil pipe ends of thermal source |
| CN107614301A (en) * | 2015-05-29 | 2018-01-19 | 三电汽车空调系统株式会社 | Air conditioner for vehicles |
| CN108019886A (en) * | 2017-11-10 | 2018-05-11 | 青岛海尔空调电子有限公司 | Detection control method for air-conditioning |
| CN109855264A (en) * | 2018-12-27 | 2019-06-07 | 奥克斯空调股份有限公司 | Auxiliary electric heater unit Failure Control method, apparatus, air conditioner and storage medium |
| US10712033B2 (en) | 2018-02-27 | 2020-07-14 | Johnson Controls Technology Company | Control of HVAC unit based on sensor status |
| CN113138376A (en) * | 2021-05-21 | 2021-07-20 | 中国科学院长春光学精密机械与物理研究所 | Device for automatically correcting thermo-optic of laser radar |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101813360A (en) * | 2009-12-28 | 2010-08-25 | 宁波奥克斯空调有限公司 | Method and device for controlling electric heating of air conditioner |
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2012
- 2012-01-18 CN CN2012100141034A patent/CN102563811A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813360A (en) * | 2009-12-28 | 2010-08-25 | 宁波奥克斯空调有限公司 | Method and device for controlling electric heating of air conditioner |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110780A (en) * | 2013-10-22 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner and control method and system for electric auxiliary heating thereof |
| CN104110780B (en) * | 2013-10-22 | 2017-01-25 | 广东美的制冷设备有限公司 | Air conditioner and control method and system for electric auxiliary heating thereof |
| CN104864542A (en) * | 2014-02-20 | 2015-08-26 | 广东美的制冷设备有限公司 | Method for controlling electric heating of air conditioner, control device and air conditioner |
| CN103940048A (en) * | 2014-05-12 | 2014-07-23 | 珠海格力电器股份有限公司 | Control method and control system for electric heating of air conditioner |
| CN104596022A (en) * | 2014-09-29 | 2015-05-06 | 宁波奥克斯空调有限公司 | Control method for auxiliary electric heating of air conditioner |
| CN104596022B (en) * | 2014-09-29 | 2017-10-13 | 奥克斯空调股份有限公司 | A kind of control method of air conditioner auxiliary electrical heater |
| CN107614301B (en) * | 2015-05-29 | 2020-04-10 | 三电汽车空调系统株式会社 | Air conditioner for vehicle |
| US10493821B2 (en) | 2015-05-29 | 2019-12-03 | Sanden Automotive Climate Systems Corporation | Vehicle air conditioner |
| CN107614301A (en) * | 2015-05-29 | 2018-01-19 | 三电汽车空调系统株式会社 | Air conditioner for vehicles |
| CN106500285A (en) * | 2015-09-08 | 2017-03-15 | 周峙东 | A kind of old-fashioned air conditioner electric concurrent heating system, control method and its air-conditioner |
| CN106545960B (en) * | 2016-10-18 | 2019-06-28 | 广东美的暖通设备有限公司 | New blower control method and new blower |
| CN106545960A (en) * | 2016-10-18 | 2017-03-29 | 广东美的暖通设备有限公司 | New blower control method and new blower fan |
| CN107355852A (en) * | 2017-06-21 | 2017-11-17 | 上海交通大学 | Double small temperature difference heat exchange blower fan coil pipe ends of thermal source |
| CN108019886A (en) * | 2017-11-10 | 2018-05-11 | 青岛海尔空调电子有限公司 | Detection control method for air-conditioning |
| CN108019886B (en) * | 2017-11-10 | 2021-07-27 | 青岛海尔空调电子有限公司 | Detection control method for air conditioner |
| US10712033B2 (en) | 2018-02-27 | 2020-07-14 | Johnson Controls Technology Company | Control of HVAC unit based on sensor status |
| CN109855264A (en) * | 2018-12-27 | 2019-06-07 | 奥克斯空调股份有限公司 | Auxiliary electric heater unit Failure Control method, apparatus, air conditioner and storage medium |
| CN113138376A (en) * | 2021-05-21 | 2021-07-20 | 中国科学院长春光学精密机械与物理研究所 | Device for automatically correcting thermo-optic of laser radar |
| CN113138376B (en) * | 2021-05-21 | 2023-09-22 | 中国科学院长春光学精密机械与物理研究所 | Device for thermo-optical automatic correction of laser radar |
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Application publication date: 20120711 |