CN100414199C - Shake-proof room temperature control device and control method thereof - Google Patents
Shake-proof room temperature control device and control method thereof Download PDFInfo
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- CN100414199C CN100414199C CNB2003101178982A CN200310117898A CN100414199C CN 100414199 C CN100414199 C CN 100414199C CN B2003101178982 A CNB2003101178982 A CN B2003101178982A CN 200310117898 A CN200310117898 A CN 200310117898A CN 100414199 C CN100414199 C CN 100414199C
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Abstract
The present invention relates to a shake-proof room temperature control device and method thereof. After a temperature sensor is connected in parallel with a capacitor, one end of the device is connected with ground, and the other end of the device is respectively connected with a power supply by a resistor R1 and the AIN0 terminal of a single chip computer by a resistor R2; a multi-gear switch is connected with the AIN2 terminal of the single chip computer; a four-way valve relay is connected with the P0.1 terminal of the single chip computer; the P1.1 terminal of the single chip computer is a temperature signal setting terminal; the T0 terminal of the single chip computer is connected with a flow detecting device and the power supply; and the PWM terminal of the single chip computer is the compressor rotational speed control signal output terminal of an air conditioner. In the method, refrigerant flow capacity can be adjusted and the refrigeration/ heat quantity of the air conditioner can be controlled by the induction of the indoor temperature variation curve slope; after the setting temperature is achieved, the compressor always runs. The shake-proof room temperature control device can automatically control the refrigeration/ heat quantity of the air conditioner according to the indoor and outdoor temperature difference state and the ventilation situation of surrounding environment, and the indoor and outdoor heat exchange can reach balance. The constancy of room temperature can be ensured, and the influence on the service life of the compressor because of frequent starting is avoided.
Description
Technical field
The present invention relates to a kind of room temperature control method when air-conditioner refrigeration/hot, particularly relate to a kind of when air-conditioner refrigeration/hot non-jitter controlling room temperature and control method.
Background technology
Because the diversity of natural environment and people's living environment, under different environment, even equate with external world's temperature difference in the room, the speed of its heat exchange degree also is different.Therefore, for different heat exchange environment, the desired refrigerating capacity of each temperature approach is inequality, otherwise under compressor is not stopped work situation about doing, can cause refrigeration not enough or freeze excessive.The result causes indoor temperature to be lower than or is higher than design temperature.Because traditional air-conditioner do not have throttle valve gear, can't the smooth adjustment refrigerating capacity because of conventional air conditioner, have only by compressor open/stop realization, thereby caused the shake of room temperature.
The room temperature control principle of conventional air conditioner is, refrigeration/when hot when indoor temperature low/when being higher than special value of design temperature when (such as 1 ℃) compressor quit work, when indoor temperature high/low during in special value of design temperature compressor start working again.The disadvantage of this control method is the sinusoidal shape shake of being as shown in Figure 1 of indoor temperature one time graph.Do not reach indoor temperature and keep constant effect substantially.And compressor start is numerous short, influences the compressor life-span, also has shock effect for the access electrical network.
Summary of the invention
Technical problem to be solved by this invention is, a kind of above-mentioned drawback that can overcome conventional air conditioner is provided, and can non-jitter control room gentleness do not pollute the non-jitter controlling room temperature and the control method of electrical network.
The technical solution adopted in the present invention is: a kind of controlling room temperature of non-jitter includes single-chip microcomputer PCB, flow detector TS, temperature sensor RT, multi-position switch KN, cross valve relay TF, power supply, capacitor C 1, resistance R 1, R2; After wherein temperature sensor RT and capacitor C 1 are connected in parallel, one end ground connection, the other end connects power supply, connects the AIN0 end of single-chip microcomputer PCB by resistance R 2 by resistance R 1 respectively, multi-gear switch KN connects the AIN2 end of single-chip microcomputer PCB, cross valve relay TF connects the P0.1 end of single-chip microcomputer PCB, the P1.1 end of single-chip microcomputer PCB is the design temperature signal end, T0 termination flow detector TS and the power supply of single-chip microcomputer PCB, and the PWM end of single-chip microcomputer PCB is the compressor rotary speed control signal output of air-conditioner.
A kind of control method of using the controlling room temperature of non-jitter, be by induction, regulate cold medium flux, the refrigeration/heat of control air-conditioning the indoor temperature change generated in case slope of curve, after reaching design temperature, compressor moves all the time, and it is constant that room temperature keeps, non-jitter, the described indoor temperature change generated in case slope of curve, be by the signal of cross valve relay (TF) input, judge that air-conditioner is in refrigeration and still heats state, thereby when freezing and heating, can finish the cold medium flux control task; Described cold medium flux control comprises, by the signal of indoor temperature change generated in case, selects corresponding control logic, and the electric machine frequency of control compressor is regulated cold medium flux; It is characterized in that the control of described cold medium flux is also measured the umber of pulse that produced in cycle time by being rotated in of rotameter or the piezoelectric signal of piezoelectric type flowmeter generation by single-chip microcomputer (PCB), thereby calculate the flow of refrigerant;
Described control method is by realizing as the next stage:
S1. the energising back is selected and definite pipeline situation stage, enters S2 then; S2. in the full speed compressor operation stage, enter S3 then; S3. freeze/hot decision stage, enter S4 then; S4. detect the current room temperature stage, enter S5 then; S5. start the timer stage, enter S6 then; S6. detect room temperature once more and calculate the temperature change value stage, the frequency pulse signal by computation of table lookup should apply enters S7 then; S7. do you judge that the present flow rate value is greater than the target flow value stage? if greater than, then enter S11, otherwise enter S8; S8. do you judge that the present flow rate value equals the target flow value stage? if equal, then enter S12, otherwise enter S9; S9. the present flow rate value enters S10 less than the target flow value stage; S10. in the raising frequency pressure regulation stage, enter S12 then; S11. in the frequency reducing pressure regulation stage, enter S12 then; S12. timer starts the INT introducing stage, enters S7 then, continues said process.
The present invention can control the refrigeration/heat of air-conditioning automatically according to the temperature difference situation of indoor and outdoor and the heat dissipation ventilation situation of surrounding environment, makes the heat exchange of indoor and outdoors reach poised state.Both guaranteed the constant of room temperature, avoided again, and prevented because all harmful effects that the too frequent startup of compressor brings because of the too frequent startup of compressor influences the situation in the life-span of compressor.
Description of drawings
Fig. 1 is the room temperature jitter curve of conventional air conditioner;
Fig. 2 is the structural representation of control device of the present invention;
Fig. 3 is the structural representation of rotameter;
Fig. 4 is the structural representation of piezoelectric type flowmeter;
Fig. 5 is the flow chart of the room temperature control method of non-jitter.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment content of the present invention is described in further detail.
As shown in Figure 2, the controlling room temperature of non-jitter includes single-chip microcomputer PCB, flow detector TS, temperature sensor RT, multi-position switch KN, cross valve relay TF, power supply, capacitor C 1, resistance R 1, R2; After wherein temperature sensor RT and capacitor C 1 are connected in parallel, an end ground connection, the other end connects power supply, connects the AIN0 end of single-chip microcomputer PCB by resistance R 2 by resistance R 1 respectively, and multi-gear switch KN connects the AIN2 end of single-chip microcomputer PCB.Described multi-gear switch KN selects accurate 16 position switch, as the refrigerating capacity selector switch, it is the position of deciding the refrigerating capacity selector switch by the mounting condition (being the copper pipe diameter) of the machine of installing an air-conditioner, in fact be exactly the selector switch of the correspondence table of the indoor temperature difference change slope-data on flows under 16 varying environments, after the energising, the output voltage of this switch respective notch is through analog-to-digital conversion input single-chip microcomputer, and which correspondence table single-chip microcomputer should select manage the rotating speed of frequency-changeable compressor by result's judgement that conversion gets.Cross valve relay TF connects the P0.1 end of single-chip microcomputer PCB, the P1.1 end of single-chip microcomputer PCB is the design temperature signal end, T is connected with the design temperature signal, T0 termination flow detector TS and the power supply of single-chip microcomputer PCB, the PWM end of single-chip microcomputer PCB is the compressor rotary speed control signal output of air-conditioner.
Wherein, described flow detector TS is a rotameter.The flow velocity signal that measures can feed back on the control PCB, thus correct frequency error timely.
As shown in Figure 3, its rotameter is with a screw 1, be placed in the inboard of fluid line 2, when having fluid to flow through in the pipeline 2, screw 1 begins rotation under the thrust of fluid, it is fast more that fluid flows, and it is fast more that screw 1 changes, thereby screw 1 rotational angular has just been reacted flow rate of fluid.Be axle 3 below the screw 1, an other end of axle 3 is mounted with metal spring leaf 4, the rotation of the rotating band movable contact spring 4 of axle 3.The bearing shell of axle on 3 and the ground (not shown) that joins, so be low level on the reed 4.One iron plate 5 is arranged near the reed 4, join with the circuit of 5V, the counter mouth T0 on this circuit and the single-chip microcomputer PCB joins.When reed 4 rotates to ad-hoc location, contact, so that the line potential at conductor place is become by 5V is low with conductor.Single-chip microcomputer PCB detects the trailing edge of its T0 mouth, just can count by paired pulses, thereby has obtained the flow rate of fluid data.
By hydrodynamics as can be known, in the pipeline that has fluid to flow, the two ends of choke valve, because flow rate of fluid does not wait, can produce differential static pressure on the valve both sides, place piezoeletric quartz sensor in appropriate location, valve both sides, piezoeletric quartz sensor is done the time spent being subjected to fluid pressure, can be because the mechanically deform of crystal produce faint electromotive force, the mechanically deform degree of the size of this electromotive force and piezo-electric crystal is relevant.Therefore, described flow detector TS also can select the piezoelectric type flowmeter for use.
As shown in Figure 4, the piezoelectric type flowmeter is because the hydraulic pressure difference difference on valve both sides, so the electromotive force that valve both sides piezo-electric crystal 6,7 produces is also different, the faint electromotive force of these both sides is after amplifying, and its electrical potential difference can be imported single-chip microcomputer and be converted into data signal, thereby has obtained the high low signal of flow velocity.
The room temperature control method of non-jitter is by the induction to the indoor temperature change generated in case slope of curve, regulates cold medium flux, the refrigeration/heat of control air-conditioning, reach design temperature after, compressor moves all the time, room temperature keeps constant, non-jitter.Wherein the indoor temperature change generated in case slope of curve is by the signal of cross valve relay TF input, judges that air-conditioner is in refrigeration and still heats state, thereby can finish the cold medium flux control task when freezing and heating.
Described cold medium flux control comprises, by the signal of indoor temperature change generated in case, selects corresponding control logic, and the electric machine frequency of control compressor is regulated cold medium flux.
The control of described cold medium flux also comprises, by single-chip microcomputer PCB the piezoelectric signal that the umber of pulse that produced in cycle time by being rotated in of rotameter or piezoelectric type flowmeter produce measured, thereby calculated the flow of refrigerant.
As shown in Figure 5, the room temperature control method of non-jitter is by realizing as the next stage:
S1. the energising back is selected and definite pipeline situation stage, enters S2 then;
S2. in the full speed compressor operation stage, enter S3 then;
S3. freeze/hot decision stage, system need judge that air conditioner is in refrigerating state or heats state, and this signal is provided by the control bit of cross valve.So that carry out corresponding refrigerating/heating program, enter S4 then;
S4. detect the current room temperature stage.When air-conditioner is worked, at first user's design temperature imports among the single-chip microcomputer PCB by the communications cable and goes on record, this moment, single-chip microcomputer PCB started working, the analog voltage signal that the temperature sensor of indoor and outdoors is sent here is sent into AIN0 and the AIN1 mouth on the single-chip microcomputer PCB respectively, after the A-D conversion, single-chip microcomputer PCB has obtained the data signal of the temperature of indoor and outdoor.Enter S5 then;
S5. start the timer stage, enter S6 then;
S6. detect room temperature once more and calculate the temperature change value stage.The time of indoor temperature measurement is introduced by timer interrupt signal, every certain time interval of crossing, single-chip microcomputer PCB measures once current room temperature, and with last time room temperature compare, go out the frequency pulse signal that apply by computation of table lookup.Enter S7 then;
S7. do you judge that the present flow rate value is greater than the target flow value stage? single-chip microcomputer calls the motor-driven program, after the target frequency pulse that requires is sent to frequency-changeable compressor, carry out the comparison of target flow value and present flow rate value, whether the decision flow also needs to adjust, and this toward which direction is adjusted.If the present flow rate value greater than target flow value, then enters S11, otherwise enters S8;
S8. do you judge that the present flow rate value equals the target flow value stage? if equal, then enter S12, otherwise enter S9;
S9. the present flow rate value enters S10 less than the target flow value stage;
S10. in the raising frequency pressure regulation stage, if the target flow number is big and the present flow rate number, then raise to the frequency signal of frequency-changeable compressor, enlargement discharge enters S12 then;
S11. in the frequency reducing pressure regulation stage, enter S12 then;
S12. timer starts the INT introducing stage, and the number of pulses that flowmeter sends in a metering chronomere equates that with target flow numerical value the expression flow has reached the size that needs, the pulsed drive frequency-changeable compressor that this moment is current.Enter S7 then, continue said process.
Carry out in the refrigerating/heating process at air conditioner, system is the variation of the interior temperature difference of Control Room constantly, at any time refrigerating capacity is adjusted.Behind the air conditioner power-off restarting, native system is regulated frequency-changeable compressor automatically to full-speed operation.
Up to the present, though be that the center has been described in detail, in basic fundamental thought range of the present invention, a lot of distortion can be proposed the general technical staff of the technical field of the invention with embodiments of the invention.Basic fundamental thought of the present invention is embodied in the scope that claim asks for protection, and all differences point all should be interpreted as belonging to scope of the present invention in the equal with it scope.
Claims (6)
1. the controlling room temperature of a non-jitter is characterized in that, includes single-chip microcomputer (PCB), flow detector (TS), temperature sensor (RT), multi-position switch (KN), cross valve relay (TF), power supply, capacitor C 1, resistance R 1, R2; After wherein temperature sensor (RT) is connected in parallel with capacitor C 1, one end ground connection, the other end connects power supply, connects the AIN0 end of single-chip microcomputer (PCB) by resistance R 2 by resistance R 1 respectively, multi-gear switch (KN) connects the AIN2 end of single-chip microcomputer (PCB), cross valve relay (TF) connects the P0.1 end of single-chip microcomputer (PCB), the P1.1 end of single-chip microcomputer (PCB) is the design temperature signal end, the T0 termination flow detector (TS) and the power supply of single-chip microcomputer (PCB), the PWM end of single-chip microcomputer (PCB) is the compressor rotary speed control signal output of air-conditioner.
2. the controlling room temperature of non-jitter according to claim 1 is characterized in that, described flow detector (TS) is a rotameter.
3. the controlling room temperature of non-jitter according to claim 1 is characterized in that, described flow detector (TS) is the piezoelectric type flowmeter.
4. the controlling room temperature of non-jitter according to claim 1 is characterized in that, described multi-gear switch (KN) selects accurate 16 position switch.
5. the controlling room temperature of non-jitter according to claim 1 is characterized in that, described temperature sensor (RT) is selected thermistor for use.
6. control method of using the controlling room temperature of non-jitter, be by induction to the indoor temperature change generated in case slope of curve, regulate cold medium flux, refrigeration/the heat of control air-conditioning, after reaching design temperature, compressor moves all the time, it is constant that room temperature keeps, non-jitter, the described indoor temperature change generated in case slope of curve, be by the signal of cross valve relay (TF) input, judge that air-conditioner is in refrigeration and still heats state, thereby when freezing and heating, can finish the cold medium flux control task; Described cold medium flux control comprises, by the signal of indoor temperature change generated in case, selects corresponding control logic, and the electric machine frequency of control compressor is regulated cold medium flux; It is characterized in that the control of described cold medium flux is also measured the umber of pulse that produced in cycle time by being rotated in of rotameter or the piezoelectric signal of piezoelectric type flowmeter generation by single-chip microcomputer (PCB), thereby calculate the flow of refrigerant;
Described control method is by realizing as the next stage:
S1. the energising back is selected and definite pipeline situation stage, enters S2 then; S2. in the full speed compressor operation stage, enter S3 then; S3. freeze/hot decision stage, enter S4 then; S4. detect the current room temperature stage, enter S5 then; S5. start the timer stage, enter S6 then; S6. detect room temperature once more and calculate the temperature change value stage, the frequency pulse signal by computation of table lookup should apply enters S7 then; S7. do you judge that the present flow rate value is greater than the target flow value stage? if greater than, then enter S11, otherwise enter S8; S8. do you judge that the present flow rate value equals the target flow value stage? if equal, then enter S12, otherwise enter S9; S9. the present flow rate value enters S10 less than the target flow value stage; S10. in the raising frequency pressure regulation stage, enter S12 then; S11. in the frequency reducing pressure regulation stage, enter S12 then; S12. timer starts the INT introducing stage, enters S7 then, continues said process.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2003101178982A CN100414199C (en) | 2003-12-23 | 2003-12-23 | Shake-proof room temperature control device and control method thereof |
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| CNB2003101178982A CN100414199C (en) | 2003-12-23 | 2003-12-23 | Shake-proof room temperature control device and control method thereof |
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| CN1632399A CN1632399A (en) | 2005-06-29 |
| CN100414199C true CN100414199C (en) | 2008-08-27 |
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| CN104236023B (en) * | 2014-10-16 | 2017-02-15 | 珠海格力电器股份有限公司 | Load control method and device |
| US9562710B2 (en) | 2015-04-27 | 2017-02-07 | Emerson Climate Technologies, Inc. | Diagnostics for variable-capacity compressor control systems and methods |
| US9709311B2 (en) | 2015-04-27 | 2017-07-18 | Emerson Climate Technologies, Inc. | System and method of controlling a variable-capacity compressor |
| US10408517B2 (en) | 2016-03-16 | 2019-09-10 | Emerson Climate Technologies, Inc. | System and method of controlling a variable-capacity compressor and a variable speed fan using a two-stage thermostat |
| US10760814B2 (en) * | 2016-05-27 | 2020-09-01 | Emerson Climate Technologies, Inc. | Variable-capacity compressor controller with two-wire configuration |
| CN108981092B (en) * | 2017-05-31 | 2022-04-12 | 中兴通讯股份有限公司 | Central air-conditioning temperature control device, control method of fan coil, medium and system |
| CN110160128A (en) * | 2019-06-05 | 2019-08-23 | 浙江东南建筑设计有限公司 | A kind of energy conservation HVAC control method and its system |
| US20230080482A1 (en) * | 2020-02-21 | 2023-03-16 | Johnson Controls Tyco IP Holdings LLP | Logic board for variable speed drive |
| CN111963462A (en) * | 2020-08-17 | 2020-11-20 | 衢州海西电子科技有限公司 | Refrigeration ventilator and self-adaptive control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220003A (en) * | 1985-07-19 | 1987-01-28 | Matsushita Electric Ind Co Ltd | Controller |
| CN2155519Y (en) * | 1993-06-30 | 1994-02-09 | 李敬茂 | Energy-saving air conditioner |
| JPH06129688A (en) * | 1992-10-20 | 1994-05-13 | Matsushita Electric Ind Co Ltd | Air-conditioning apparatus and controlling method thereof |
| JPH06159773A (en) * | 1992-11-20 | 1994-06-07 | Fujitsu General Ltd | Controller for air conditioner |
| JPH10332232A (en) * | 1997-05-29 | 1998-12-15 | Matsushita Refrig Co Ltd | Heat pump type air conditioner |
-
2003
- 2003-12-23 CN CNB2003101178982A patent/CN100414199C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220003A (en) * | 1985-07-19 | 1987-01-28 | Matsushita Electric Ind Co Ltd | Controller |
| JPH06129688A (en) * | 1992-10-20 | 1994-05-13 | Matsushita Electric Ind Co Ltd | Air-conditioning apparatus and controlling method thereof |
| JPH06159773A (en) * | 1992-11-20 | 1994-06-07 | Fujitsu General Ltd | Controller for air conditioner |
| CN2155519Y (en) * | 1993-06-30 | 1994-02-09 | 李敬茂 | Energy-saving air conditioner |
| JPH10332232A (en) * | 1997-05-29 | 1998-12-15 | Matsushita Refrig Co Ltd | Heat pump type air conditioner |
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