CN101368803B - Protection device of temperature compensation heater used for full heat exchanger and its control method - Google Patents
Protection device of temperature compensation heater used for full heat exchanger and its control method Download PDFInfo
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- CN101368803B CN101368803B CN2008100055403A CN200810005540A CN101368803B CN 101368803 B CN101368803 B CN 101368803B CN 2008100055403 A CN2008100055403 A CN 2008100055403A CN 200810005540 A CN200810005540 A CN 200810005540A CN 101368803 B CN101368803 B CN 101368803B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to a temperature compensation heater protector for a total heat exchanger and control method thereof, which aims at more quickly and safely protecting a PTC heater arranged to compensate the outdoor air temperature flowing into the total heat exchanger. For this purpose, according to the total heat exchanger which exhausting the indoor air to outdoor and flowing the outdoor air to indoor while exchanging the indoor air, the invention comprises the heater compensating the outdoor air temperature; a current detection part for detecting the operation current of the heater; a control part for input device for determining the consumed power based on the detected operation current, judging a heating state of the heater and controlling a power applied on the heater according to the judgment result.
Description
Technical field
The present invention relates to a kind of protection device of temperature compensation heater used for full heat exchanger and control method thereof, relate in particular to and to protect protection device of temperature compensation heater used for full heat exchanger and the control method thereof that flow into the ptc heater that the outside air temperature of total-heat exchanger is provided with for compensation.
Background technology
Usually; Total-heat exchanger is to make the device that heat exchange takes place between the outdoor air of room air and inflow of discharge, is discharged to outdoor and flow into outdoor pure and fresh air the heat loss that takes place in the indoor room air scavenging period to be used for reducing foul air with the airtight interior space.
Korea S's publication communique discloses this total-heat exchanger 2003-0063856 number.
The disclosed total-heat exchanger of this communique is communicated with indoor and outdoors through inlet channel and exhaust passage; Thereby utilize scavenger fan that the foul air in the airtight interior space is passed through the exhaust passage toward outdoor discharge; And utilize supply fan to flow into outdoor pure and fresh air indoor through inlet channel; Thus, carry out the ventilation of room air.At this moment, the full heat exchanging element that is arranged on the crosspoint of inlet channel and exhaust passage makes through the outdoor air of inlet channel and the room air through the exhaust passage and carries out heat exchange with the state of mutual isolation, thereby reduces the heat loss that takes place in the scavenging period.
Though this total-heat exchanger is provided with full heat exchanging element in order to reduce the heat loss that takes place in the scavenging period and in the crosspoint of inlet channel and exhaust passage; But under the cold conditions in the winter time; Because it is indoor that ice-cold outside air temperature causes cold wind to be fed directly to, so its heat exchange performance can be because former thereby declines such as full heat exchanging element dewfall, frostings.
In order to address this is that; Outdoor air inflow side at total-heat exchanger is provided with PTC (Positive Temperature Coefficient recently; Positive temperature coefficient) heater compensates outside air temperature, and also together prepares to be used to protect the protective device of ptc heater according to the setting of ptc heater.
Existing P TC heater protective apparatus will be connected in the ptc heater power end by the mechanical protection protection unit that Thermal Cutoffs, temperature controller etc. constitutes usually; And the heating temp of inspection ptc heater; Cut off the electricity supply thereby be at ptc heater under the condition of abnormality (superheat state), to protect ptc heater safely.
But; Aforesaid existing total-heat exchanger with the ptc heater protective device owing to be to protect control through mechanicalness temperature inspection; Therefore about 100～240 seconds time delay can take place because of the temperature of ptc heater rises when making protective device action (cutting off the electricity supply), and when Thermal Cutoffs opens circuit for the protection ptc heater, be not easy to keep in repair under the abnormality condition.
Summary of the invention
The present invention proposes in order to solve aforesaid problem, and its purpose is to provide a kind of protection device of temperature compensation heater used for full heat exchanger and the control method thereof that can more safely protect the outdoor air that is arranged on total-heat exchanger for the compensation outside air temperature to flow into the ptc heater of side sooner.
Another object of the present invention is to provide a kind of utilization to judge the febrile state of ptc heater through the consumed power information that the running current that detects ptc heater obtains, thereby protects the protection device of temperature compensation heater used for full heat exchanger and the control method thereof of control more exactly.
To achieve these goals; The present invention provides a kind of total-heat exchanger to use heater protective apparatus; This total-heat exchanger is discharged to room air outdoor; And outdoor air is flowed into indoor, thereby room air is taken a breath, this heater protective apparatus comprises: the heater that compensates said outside air temperature; Detect the current detecting part of said heater running current; Control part, it measures the febrile state that consumed power is judged said heater according to said detected running current, and is applied to the power supply on the said heater according to this judged result control.
And said heater is arranged on the ptc heater that said total-heat exchanger outdoor air flows into side.
And said current detecting part is to detect the shunt resistance that flows through said heater running current.
And said control part utilizes said detected running current and the supply voltage that is applied to said heater to measure consumed power.
And more said consumed power that determines of said control part and rated consumption power check that difference that the consumed power measured value compares with said rated consumption power is whether more than predefined certain limit.
And the difference that said control part is compared with said rated consumption power when the consumed power measured value judges that said heater is in superheat state when predefined certain limit is above.
And said control part cuts off the power supply that is applied on the said heater and controls when judging that said heater is in superheat state.
And said control part is when judging that said heater is in superheat state, and control is used to point out the signal that said heater is checked output.
And, said certain limit be said rated consumption power 80% in.
In addition; The present invention provides a kind of total-heat exchanger to use the heater protecting control method; This total-heat exchanger flows into side in order to compensate outside air temperature at outdoor air heater is set, and this method is characterised in that and may further comprise the steps: detect the running current that flows through said heater; Measure consumed power according to said detected running current; More said consumed power that determines and rated consumption power are judged the febrile state of said heater according to the fiducial value of consumed power measured value and said rated consumption power; Control the power supply that is applied on the said heater according to said judged result.
And described mensuration consumed power is: measure consumed power according to said detected running current and the product that is applied to the supply voltage on the said heater.
And describedly judge that the heater febrile state is: whether the difference of comparing with said rated consumption power through inspection consumed power measured value more than predefined certain limit, judges the superheat state of said heater.
And described judgement heater febrile state is: when said consumed power measured value is compared the difference that has more than the said certain limit with rated consumption power, judge that said heater is in superheat state.
And the power supply that described control is applied on the heater is: when judging that said heater is in superheat state, cut off being applied to the power supply on the said heater.
And,, comprise that also when judging that said heater is in superheat state, output is used to point out the signal that said heater is checked according to protection control method of the present invention.
According to protection device of temperature compensation heater used for full heat exchanger provided by the present invention and control method thereof; In order more safely to protect the outdoor air that is arranged on total-heat exchanger in order to compensate outside air temperature to flow into the ptc heater of surveying sooner; Detect the running current of ptc heater and measure consumed power; Utilize the consumed power information of being measured to judge the superheat state of ptc heater again, thereby can carry out the protection control of ptc heater more exactly, and then can in time be applicable in rules relevant and the corresponding design with product liability; Not only guarantee security of products thus, can also improve running quality.
Description of drawings
Fig. 1 is the stereogram that the total-heat exchanger structure that the embodiment of the invention provides is shown;
Fig. 2 is the vertical view that the total-heat exchanger structure that the embodiment of the invention provides is shown;
Fig. 3 illustrates the synoptic diagram that the air in the total-heat exchanger that the embodiment of the invention provides flows;
Fig. 4 is the control block diagram that is used to protect ptc heater of the total-heat exchanger that the embodiment of the invention provided;
Fig. 5 is the flow chart of control action order that is used to protect ptc heater that total-heat exchanger that the embodiment of the invention provides is shown;
Fig. 6 illustrates the curve map that consumed power that total-heat exchanger that the embodiment of the invention provides takes place with the ptc heater heating temp changes;
Main symbol description: 11 is the outdoor air inflow entrance, and 21 is supply fan, and 31 is scavenger fan; 40 is heat exchange elements, and 51 for outdoor air flows into passage, and 60 is ptc heater; 62 is temperature protector, and 70 is power supply unit, and 74 is control part; 76 is heater-driven portion, and 78 is current detecting part, and 82 is display part.
The specific embodiment
Below, specify embodiments of the invention with reference to accompanying drawing.
Fig. 1 is the stereogram that the total-heat exchanger structure that the embodiment of the invention provides is shown; Fig. 2 is the vertical view that the total-heat exchanger structure that the embodiment of the invention provides is shown, and Fig. 3 illustrates the synoptic diagram that the air in the total-heat exchanger that the embodiment of the invention provides flows.
To shown in Figure 3, total-heat exchanger provided by the invention comprises like Fig. 1: the main body 10 that forms the box outward appearance; Be arranged on the air inlet unit 20 of main body 10 inner sides, be used to flow into outdoor air and supply to indoor; , be used to flow into room air and be discharged to outdoor in the exhaust unit 30 of the diagonal of air inlet unit 20 in the set inside of main body 10; Be arranged on the heat exchange elements 40 of main body 10 inside, it makes to be discharged to outdoor room air and to flow between the indoor outdoor air heat exchange takes place.
The outside of said main body 10 1 sides (left side) is formed for respectively flowing into the outdoor air inflow entrance 11 of outdoor air and being used for the room air through heat exchange elements 40 is discharged to outdoor room air outlet 12, and the indoor of said main body 10 opposite sides (right side) is formed for respectively flowing into the room air inflow entrance 13 of room air and being used for the outdoor air through heat exchange elements 40 is fed to indoor outdoor air outlet 14.
Said air inlet unit 20 comprises supply fan 21 and supply fan motor 22, and the inflow side of supply fan 21 is connected with the inner space of main body 10, and the discharge side of supply fan 21 is connected with outdoor air outlet 14.Equally, exhaust unit 30 comprises scavenger fan 31 and scavenger fan motor 32, and the inflow side of scavenger fan 31 is connected with the inner space of main body 10, and the discharge side of scavenger fan 31 is connected with room air outlet 12.
Said heat exchange elements 40 has hexahedral shape; Between outdoor air inflow entrance 11 and heat exchange elements 40 first 41, being provided with within it, portion forms the outdoor air inflow pipe 52 that outdoor air flows into passage 51; This is used for being directed to heat exchange elements 40 with flowing into the inner outdoor airs of main body 10, and between the inflow side of 40 second 42 of the heat exchange elements of first 41 opposition side and supply fan 21, is being provided with outdoor air passing away 53.Equally; Between room air inflow entrance 13 and heat exchange elements 40 the 3rd 43, being provided with within it, portion forms the room air inflow pipe 55 that room air flows into passage 54; This is used for being directed to heat exchange elements with flowing into the inner room airs of main body 10, and between the inflow side of the fourth face 44 of the heat exchange elements 40 of the 3rd 43 opposition side and scavenger fan 31, is being provided with room air passing away 56.
And; Said heat exchange elements 40 constitutes to make from outdoor and enters indoor air and be discharged to outdoor air and under the state of isolating mutually, carry out heat exchange from indoor, has with a plurality of liner plates (liner) 45 of a determining deviation lamination for this reason and is arranged in the spacer (spacer) 46 between this liner plate 45.Spacer 46 constitutes its section sheet material in wave shape by forming peak and paddy continuously, to form air duct 47 in the space between liner plate 45 in maintaining heat exchange component shape.Below, the stack direction of a plurality of liner plates 45 is defined as the short transverse of heat exchange elements 40.
Especially; Flow in the passage 51 at outdoor air provided by the invention, be provided for compensating flow into the inner outside air temperature of main body 10 through outdoor air inflow entrance 11 temperature-compensating with PTC (Positive Temperature Coefficient) heater 60.Power end at ptc heater 60 is provided with bimetallic (bimetal) temperature protector 62 as the mechanical protection protection unit of ptc heater 60; Thereby when the heating temp of ptc heater 60 surpasses 100 ℃; Cut-out offers the power supply of ptc heater 60; And when the heating temp of ptc heater 60 is reduced to below 90 ℃, take place to recover to ptc heater 60 power supply to be provided again.
Said ptc heater 60 is to have (the PTC resistance value increase when being the temperature rising of positive temperature characterisitic; And temperature when descending the PTC resistance value reduce) semiconductor heat booster; In the winter time under the cold conditions; The ice-cold outdoor air that heating flows into through outdoor air inflow entrance 11 flow into the inner outside air temperature of main body 10 with compensation, thereby can prevent the problems such as dewfall, frosting of full heat exchanging element 40.
Fig. 4 is the control block diagram that is used to protect ptc heater of the total-heat exchanger that the embodiment of the invention provided, and it comprises power supply unit 70, input part 72, control part 74, heater-driven portion 76, current detecting part 78, fans drive portion 80 and display part 82.
The driving power that 70 supplies of said power supply unit make the total-heat exchanger operation be applied to supply voltage on the ptc heater 60 etc., said input part 72 is according to user instruction input total-heat exchanger operation information (running time, operation air quantity etc.) and operation or stop signal.
Said control part 74 is microcomputers of whole actions of control total-heat exchanger, according to the run action of controlling total-heat exchanger from the operation or the stop signal of input part 72 inputs.
Said heater-driven portion 76 controls the action of ptc heater 60 according to the heating control signal of control part 74, and said current detecting part 78 is the shunt resistances that detect the running current that flows through on the ptc heater 60 and its result passed to control part 74.
Said fans drive portion 80 is according to the fan control signal control supply fan 21 of control part 74 and the action of scavenger fan 31.Said display part 82 is exported the inspection signal according to ptc heater 60 superheat states according to the display control signal of control part 74, makes the user be easy to confirm the superheat state of ptc heater 60.
And; The running current of the ptc heater 60 that control part 84 received current test sections 78 are detected; And measure the actual power consumption according to heating of ptc heater 60 with the product that is applied to supply voltage and running current on the ptc heater 60, utilize the consumed power information of being measured to judge the superheat state of the caused ptc heater 60 of total-heat exchanger generation abnormality.
Said control part 74 utilizes consumed power information to judge that the method for the superheat state of ptc heater 60 is; Consumed power of being measured and rated consumption power are compared; When the consumed power measured value is compared the difference that has certain limit more than (about 80%) with rated consumption power; Judge that ptc heater 60 is in superheat state, and control heater drive division 76 cuts off the power supply that offers ptc heater 60.This is when increasing sharply along with the rising of ptc heater 60 heating temps owing to the PTC resistance value; Its consumed power can be reduced to 20% of rated consumption power; Afterwards, ptc heater 60 is kept certain consumed power and under saturation temperature (230 ℃) state, is settled out in superheat state.
Below, the course of action and the action effect of aforesaid protection device of temperature compensation heater used for full heat exchanger and control method thereof are described.
Fig. 5 is the flow chart of control action order that is used to protect ptc heater that total-heat exchanger that the embodiment of the invention provides is shown.
At first, judge whether total-heat exchanger is in running status (100), when being in running status, control part 74 starts supply fan 21 and scavenger fan 31 (102) through fans drive portion 80.
According to the operation of supply fan 21, outdoor air flows along outdoor air inflow passage 51 and outdoor air passing away 53.Equally, according to the operation of scavenger fan 31, room air flows along room air inflow passage 54 and room air passing away 56.Thereby begin to carry out interior space foul air is discharged to outdoor, make pure and fresh outdoor air flow into indoor ventilation operation.At this moment; Flow into passage 51 and outdoor air passing away 53 and room air at outdoor air and flow into the full heat exchanging element 40 that is provided with on passage 54 and room air passing away 56 crosspoints and make outdoor air and room air carry out heat exchange with the state of mutual isolation, thus the heat loss that takes place in the minimizing scavenging period.
The operation if total-heat exchanger begins to take a breath; Flow into the outside air temperature that outdoor air flows into passage 51 in order to compensate through outdoor air inflow entrance 11; Control part 74 provides power supply for ptc heater 60 through heater-driven portion 76, makes ptc heater 60 heatings heat the outdoor air (104) of inflow.This is in order to prevent under the cold conditions in the winter time to take place because of the inflow of ice-cold outdoor air the problem such as dewfall, frosting of full heat exchanging element 40.
If ptc heater 60 begins heating; The PTC resistance value will begin to change according to the rising of ptc heater 60 heating temps; If total-heat exchanger generation abnormality (for example; Passage obstruction or fan failure etc.), then rise rapidly along with ptc heater 60 heating temps, the PTC resistance value also increases sharply.If the PTC resistance value increases sharply, the running current that flows through ptc heater 60 will reduce.
Then; The current detecting part 78 that is connected ptc heater 60 detects the running current that flows through ptc heater 60 when ptc heater 60 begins adstante febres through shunt resistance; And pass to control part 74 (106); The running current of the ptc heater 60 that control part 74 received current test sections 78 are detected, and measure the actual power consumption (108) according to heating of ptc heater 60 with the product of the supply voltage that offers ptc heater 60 and running current.
Afterwards; Consumed power that control part 74 comparative measurements are come out and rated consumption power (according to the supply of supply voltage and fixed input power) (110) judge that the consumed power measured value compares (about 80%) the above difference (112) that whether has certain limit with rated consumption power.This is when judging when total-heat exchanger generation abnormality, and because of the temperature rising of PTC resistance value along with ptc heater 60 increases sharply, whether consumed power as shown in Figure 6 is reduced to 20% level of rated consumption power.
When the consumed power measured value was compared the difference that does not have more than the certain limit with rated consumption power, control part 74 judged that ptc heater 60 is in normal febrile state, and returned said step 106 and carry out action afterwards repeatedly.
On the other hand; When the consumed power measured value is compared the difference that has more than the certain limit with rated consumption power; Control part 74 judges that ptc heater 60 is in superheat state; And cut off the power supply that offers ptc heater 60 immediately through heater-driven portion 76, from and protect ptc heater 60 (114) soon safely.
In addition, control part 74 can also be measured consumed power with certain number of times (about 3 times) by certain hour (the about 5 seconds) cycle, and judges the superheat state of ptc heater 60 according to the consumed power rate of change of being measured.This situation is compared with (about 100～240 seconds) in the past, when ptc heater 60 is in superheat state, also can shortens and is used to cut off the required time of power supply that offers ptc heater 60, thereby can more safely protect ptc heater 60 sooner.
Meanwhile, control part 74 makes the user be easy to confirm the superheat state (116) of ptc heater 60 through the inspection signal of display part 82 outputs according to the superheat state of ptc heater 60.
Be used to protect the electic protection control of ptc heater 60 except said; The present invention is in order to protect ptc heater 60 more safely; Be provided with temperature protector 62 at ptc heater 60 power ends as the mechanical protection protection unit; When the heating temp of ptc heater 60 more than 100 ℃ the time; Temperature protector 62 deenergization ends and cut off the power supply that offers ptc heater 60, and when the heating temp of ptc heater 60 was reduced to below 90 ℃, temperature protector 62 connected power ends and recovers again to ptc heater 60 power supply to be provided.
As shown in Figure 6, can know that temperature protector 62 successfully rose to 100 ℃ according to thermal conduction characteristic in 4 minutes.Therefore; Detect the actual superheat state of ptc heaters 60 and make the protection action and need exhaust the time more than 4 minutes by temperature protector 62; So pass through to detect the running current of ptc heater 60 among the present invention; Make and when ptc heater 60 is in superheat state, to cut off the power supply that offers ptc heater 60 immediately and be not used in the time delay of protecting action, thereby compared with prior art can more safely protect control sooner.
In addition; Though in an embodiment of the present invention; The situation that is arranged at total-heat exchanger with ptc heater 60 is that example describes; But the present invention is not limited thereto, and ptc heater 60 is being arranged in the structure of various heating-cooling equipments, obviously also can reach purpose and the effect same with the present invention.
Claims (15)
1. a total-heat exchanger is used heater protective apparatus, and this total-heat exchanger is discharged to room air outdoor, and outdoor air is flowed into indoor, thereby room air is taken a breath, it is characterized in that comprising:
Compensate the heater of said outside air temperature;
Detect the current detecting part of said heater running current;
Control part, it measures the febrile state that consumed power is judged said heater according to said detected running current, and is applied to the power supply on the said heater according to this judged result control.
2. total-heat exchanger according to claim 1 is used heater protective apparatus, it is characterized in that said heater is arranged on the ptc heater that said total-heat exchanger outdoor air flows into side.
3. total-heat exchanger according to claim 1 is used heater protective apparatus, it is characterized in that said current detecting part is to detect the shunt resistance that flows through said heater running current.
4. total-heat exchanger according to claim 1 is used heater protective apparatus, it is characterized in that said control part utilizes said detected running current and the supply voltage that is applied to said heater to measure consumed power.
5. total-heat exchanger according to claim 4 is used heater protective apparatus; It is characterized in that more said consumed power that determines of said control part and rated consumption power, whether the difference of comparing with said rated consumption power with inspection consumed power measured value is more than predefined certain limit.
6. total-heat exchanger according to claim 5 is used heater protective apparatus; It is characterized in that difference that said control part compares with said rated consumption power when the consumed power measured value when predefined certain limit is above, judges that said heater is in superheat state.
7. total-heat exchanger according to claim 6 is used heater protective apparatus, it is characterized in that said control part when judging that said heater is in superheat state, cuts off the power supply that is applied on the said heater and controls.
8. total-heat exchanger according to claim 6 is used heater protective apparatus, it is characterized in that said control part when judging that said heater is in superheat state, and control is used to point out the signal that said heater is checked output.
9. total-heat exchanger according to claim 5 is used heater protective apparatus, it is characterized in that said certain limit be said rated consumption power 80% in.
10. a total-heat exchanger is used the heater protecting control method, and this total-heat exchanger flows into side in order to compensate outside air temperature at outdoor air heater is set, and this method is characterised in that and may further comprise the steps:
The running current of said heater is flow through in detection;
Measure consumed power according to said detected running current;
More said consumed power that determines and rated consumption power are judged the febrile state of said heater according to the fiducial value of consumed power measured value and said rated consumption power;
Control the power supply that is applied on the said heater according to said judged result.
11. total-heat exchanger according to claim 10 is used the heater protecting control method, it is characterized in that described mensuration consumed power is: measure consumed power according to said detected running current and the product that is applied to the supply voltage on the said heater.
12. total-heat exchanger according to claim 10 is used the heater protecting control method; It is characterized in that describedly judging that the heater febrile state is: whether the difference of comparing with said rated consumption power through inspection consumed power measured value more than predefined certain limit, judges the superheat state of said heater.
13. total-heat exchanger according to claim 12 is used the heater protecting control method; It is characterized in that described judgement heater febrile state is: when said consumed power measured value is compared the difference that has more than the said certain limit with said rated consumption power, judge that said heater is in superheat state.
14. total-heat exchanger according to claim 13 is used the heater protecting control method, it is characterized in that the power supply that described control is applied on the heater is: when judging that said heater is in superheat state, cut off being applied to the power supply on the said heater.
15. total-heat exchanger according to claim 13 is used the heater protecting control method, it is characterized in that also comprising: when judging that said heater is in superheat state, output is used to point out the signal that said heater is checked.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2007-0081396 | 2007-08-13 | ||
| KR1020070081396A KR20090017004A (en) | 2007-08-13 | 2007-08-13 | Apparatus to protect ptc heater for a heat exchanger and control method thereof |
| KR1020070081396 | 2007-08-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101368803A CN101368803A (en) | 2009-02-18 |
| CN101368803B true CN101368803B (en) | 2012-07-18 |
Family
ID=40412729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100055403A Expired - Fee Related CN101368803B (en) | 2007-08-13 | 2008-02-15 | Protection device of temperature compensation heater used for full heat exchanger and its control method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20090017004A (en) |
| CN (1) | CN101368803B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833098B (en) * | 2015-05-14 | 2018-04-03 | 芜湖美的厨卫电器制造有限公司 | The method for heating and controlling and heating control system and electric heater of electric heater |
| CN110388693B (en) * | 2019-07-11 | 2021-08-31 | 博乐环境***（苏州）有限公司 | Room air environment regulation and control system and control method thereof |
| CN110388692B (en) * | 2019-07-11 | 2021-05-25 | 博乐环境***（苏州）有限公司 | Cold and heat source fresh air device for near-zero energy consumption building and control method thereof |
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| GB2235550A (en) * | 1989-06-05 | 1991-03-06 | Toshiba Kk | Air-conditioning with fast starting |
| JP4073533B2 (en) * | 1998-02-09 | 2008-04-09 | 株式会社半導体エネルギー研究所 | Information processing device |
| JP3991586B2 (en) * | 2000-12-18 | 2007-10-17 | 三菱電機株式会社 | Outside air treatment unit |
| CN1922444A (en) * | 2004-02-19 | 2007-02-28 | 松下电器产业株式会社 | Heat exchange type ventilator |
| JP2007017064A (en) * | 2005-07-06 | 2007-01-25 | Max Co Ltd | Ventilation device and building |
| CN2894262Y (en) * | 2005-12-06 | 2007-05-02 | 唐英 | Air conditioning heat-recovery air-change integrating machine for birds and beasts and its heating system |
| WO2007069349A1 (en) * | 2005-12-14 | 2007-06-21 | Matsushita Electric Industrial Co., Ltd. | Heat exchange type ventilator |
| KR100723945B1 (en) * | 2005-12-30 | 2007-05-31 | 위니아만도 주식회사 | Method for preventing freezing of air-conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20090017004A (en) | 2009-02-18 |
| CN101368803A (en) | 2009-02-18 |
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