CN102236324A - Thermal power distribution valve for fluid heat exchanger - Google Patents
Thermal power distribution valve for fluid heat exchanger Download PDFInfo
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- CN102236324A CN102236324A CN2010101795050A CN201010179505A CN102236324A CN 102236324 A CN102236324 A CN 102236324A CN 2010101795050 A CN2010101795050 A CN 2010101795050A CN 201010179505 A CN201010179505 A CN 201010179505A CN 102236324 A CN102236324 A CN 102236324A
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Abstract
The invention discloses a thermal power distribution valve for a fluid heat exchanger. The distribution valve comprises a first temperature sensor, a second temperature sensor, a flowmeter, a valve body and a control unit, wherein the first temperature sensor is arranged at an inlet of the fluid heat exchanger and is used for measuring temperature at the inlet of the fluid heat exchanger and feeding back the measured inlet temperature value to the control unit; the second temperature sensor is arranged at an outlet of the fluid heat exchanger and is used for measuring temperature at the outlet of the fluid heat exchanger and feeding back the measured outlet temperature value to the control unit; the flowmeter is arranged on a pipeline through which fluid flows and is used for measuring flow of the fluid which flows through the fluid heat exchanger and feeding back the measured flow value to the control unit; the control unit comprises a motor and a control circuit for controlling the motor; the control circuit controls opening/closing degree of the valve body connected with an output shaft of the motor by controlling rotary output of the motor; the control unit calculates real-time power of the fluid heat exchanger according to P=CpI(T1-T2) and compares the real-time power with a set value of the preset output power; when the real-time power is higher than the set value of the output power, the control circuit of the control unit drives the motor to rotate so as to reduce the opening degree of the controlled valve body; and when the real-time power is smaller than the set value of the output power, the control circuit of the control unit drives the motor to rotate so as to increase the opening degree of the controlled valve body; therefore, thermal output power of the fluid heat exchanger is maintained at the set value of the output power.
Description
Technical field
The present invention designs a kind of valve that is used for fluid heat exchanger, relates in particular to a kind of thermal power distribution valve that is used for fluid heat exchanger.
Background technology
Heating installation is a kind of heating installation commonly used.For saving cost, central heating is unusual efficient ways.Yet central heating brings a problem, and how the heating that a plurality of user enjoyed charges respectively exactly.The most general a kind of way is to share equally according to each user's area.This method is simple, but but is unfair.Such as, being both the room of 10 square meters, a room adopts 3 radiators, and another room adopts 5 radiators, obviously, two heat supply differences that the room obtains, if but come metering heating by area, then their expenses that need share are identical.
For a kind of like this method that shows justice, people find out the whole bag of tricks and substitute, but all undesirable.
Summary of the invention
The present invention is intended to propose a kind of thermal power distribution valve that is used for fluid heat exchanger, it is by the temperature difference between the outlet of measurement fluid heat exchanger inlet and the flow of the fluid heat exchanger of flowing through, calculate the thermal output of fluid heat exchanger in real time, come the folding of application valve body in real time by FEEDBACK CONTROL, make the output power of fluid heat exchanger be stabilized in setting value in advance.
The thermal power distribution valve that is used for fluid heat exchanger of the present invention comprises: first temperature sensor, second temperature sensor, flowmeter, valve body and control module; Wherein: described first temperature sensor is arranged at the porch of fluid heat exchanger, is used to measure the temperature of described fluid heat exchanger porch, and the temperature in value of measuring is fed back to described control module; Described second temperature sensor is arranged at the exit of fluid heat exchanger, is used to measure the temperature in described fluid heat exchanger exit, and the outlet temperature value of measuring is fed back to described control module; Described flowmeter is arranged on the pipeline that fluid flows through, and be used to measure the flow of fluid of described fluid heat exchanger of flowing through, and the described flow value that will measure feeds back to described control module; Described control module comprises motor and the control circuit of controlling motor, and control circuit is exported the folding degree of controlling the valve body that is connected with the output shaft of motor by the rotation of control motor; Described control module calculates the realtime power of described fluid heat exchanger according to P=C ρ I (T1-T2), and contrast with predefined output power setting value, when described realtime power during greater than described output power setting value, the control circuit drive motor of control module rotates and makes the opening degree of application valve body reduce; When described realtime power during less than described output power setting value, the control circuit drive motor of control module rotates and makes the opening degree of application valve body increase; Thereby the thermal output of described fluid heat exchanger maintains described output power setting value; Wherein T1 is the temperature in value of being surveyed, and T2 is the outlet temperature value of being surveyed, and I is the flow value of being surveyed, and ρ is the proportion of described fluid, and C is the specific heat of described fluid.
Owing to adopted the thermal power negative feedback, make the thermal output of fluid heat exchanger maintain setting value, be very easy to the calculating of heat supply total amount.
Description of drawings
From the following description to preferred embodiments and drawings that purport of the present invention and use thereof are described, above and other purpose of the present invention, characteristics and advantage will be conspicuous, in the accompanying drawings:
Fig. 1 is the theory diagram that is used for the thermal power distribution valve of fluid heat exchanger according to of the present invention;
Fig. 2 is the single-chip microcomputer that control circuit comprised according to the control module of the thermal power distribution valve that is used for fluid heat exchanger of the present invention;
Fig. 3 is the inlet temperature sensor that the single-chip microcomputer with Fig. 2 is used;
Fig. 4 is the outlet temperature sensor that the single-chip microcomputer with Fig. 2 is used;
Fig. 5 is the motor-drive circuit that the single-chip microcomputer with Fig. 2 is used;
Fig. 6 is the flowmeter that the single-chip microcomputer with Fig. 2 is used;
Fig. 7 is the wave point that the single-chip microcomputer with Fig. 2 is used.
Embodiment
Below, with present invention is described in conjunction with the accompanying drawings.
Before the contrast accompanying drawing is described, a formula P=C ρ I (T1-T2) (1) at first will be described, core of the present invention just is being based on formula (1) and the negative feedback control circuit of design.Wherein, T1 is the temperature in value of being surveyed, and T2 is the outlet temperature value of being surveyed, and I is the flow value of being surveyed, and ρ is the proportion of described fluid, and C is the specific heat of described fluid.
As shown in Figure 1, the thermal power distribution valve that is used for fluid heat exchanger of the present invention comprises first temperature sensor 41, second temperature sensor 42, valve body 1, control module 2, flowmeter 5, fluid heat exchanger 3, wherein control module comprises motor and control circuit, and motor is used for rotating by its output shaft the spool of valve body, thus the folding degree of application valve body; Control circuit is used for drive motor.
By first temperature sensor 41, second temperature sensor 42 and flowmeter 5 are with measured separately temperature in, outlet temperature and flow feed back to control module 2, more properly, feed back to the control circuit of control module 2, mainly the control circuit that is made of single-chip microcomputer and peripheral circuit calculates the thermal output of current fluid heat exchanger based on formula (1), when the power that calculates gained during less than the power of expection, control circuit sends the drive motor and rotates, the degree that makes the spool of valve body 1 open increases, thereby flow increases, and then the thermal output of fluid heat exchanger increases; When the power that calculates gained during greater than the power of expection, control circuit sends the drive motor and rotates, and the degree that makes the spool of valve body 1 open reduces, thereby flow reduces, and then the thermal output of fluid heat exchanger reduces.Like this, make the thermal output of fluid heat exchanger always be stabilized in expectation value or setting value.
Fig. 2 is a specific embodiment of the present invention, and what select for use is the AT89C51ED2 single-chip microcomputer.Fig. 3, Fig. 4 are respectively the examples of first temperature sensor 41, second temperature sensor 42, and that select for use here is LM75.Fig. 6 is the flowmeter module.
First, second temperature sensor module among Fig. 3, Fig. 4 also can adopt thermistor and A/D change-over circuit to realize.Because the resistance of thermistor changes with variation of temperature, therefore voltage drop and the electric current on it all can reflect this variation of temperature, deliver to single-chip microcomputer by voltage drop value that temperature of reaction is changed or current value after by the A/D digitizing, also can realize the function that temperature sensor is realized among Fig. 3, Fig. 4 equally.
In like manner, here also to be not limited to be to use chip microcontroller to the control circuit of indication, can also be CPLD circuit, DSP, computing machine or other circuit of building, such as building by difference engine, multiplier, comparer and motor-drive circuit, two temperature feedback signals multiply each other in multiplier with flow value of feedback, specific gravity value, fluid thermal ratio through difference engine work difference back and obtain real-time thermal output, and then the real-time thermal output that will obtain and setting power value compare, and comes drive motor to rotate according to comparative result by motor-drive circuit.As long as can receiving feedback signals and come motor is sent drive signal according to feedback signal.
Simultaneously, also can comprise wave point in control circuit, as shown in Figure 7, like this, output power setting value etc. just can be easily by this wave point input.
By the thermal power distribution valve that is used for fluid heat exchanger of the present invention, the power of fluid heat exchanger maintains the value of a setting, thereby, only need multiply by heating time with this setting value, just can calculate total heating load easily, for heating charging etc. provides the foundation of charging accurately.
It is pointed out that the fluid in the fluid heat exchanger of the present invention can be gas, water, oil or other liquid, it is heating that heat exchanger the present invention also is not limited to, and also can be cooling.
Although illustrated and described the preferred embodiments of the present invention, it is contemplated that those skilled in the art can design within the spirit and scope of the present invention to various modifications of the present invention.
Claims (4)
1. thermal power distribution valve that is used for fluid heat exchanger, it comprises: first temperature sensor, second temperature sensor, flowmeter, valve body and control module; Wherein:
Described first temperature sensor is arranged at the porch of fluid heat exchanger, is used to measure the temperature of described fluid heat exchanger porch, and the temperature in value of measuring is fed back to described control module;
Described second temperature sensor is arranged at the exit of fluid heat exchanger, is used to measure the temperature in described fluid heat exchanger exit, and the outlet temperature value of measuring is fed back to described control module;
Described flowmeter is arranged on the pipeline that fluid flows through, and be used to measure the flow of fluid of described fluid heat exchanger of flowing through, and the described flow value that will measure feeds back to described control module;
Described control module comprises motor and the control circuit of controlling motor, and control circuit is exported the folding degree of controlling the valve body that is connected with the output shaft of motor by the rotation of control motor;
The control circuit of described control module calculates the realtime power of described fluid heat exchanger according to P=C ρ I (T1-T2), and contrast with predefined output power setting value, when described realtime power during greater than described output power setting value, the control circuit drive motor of control module rotates and makes the opening degree of application valve body reduce; When described realtime power during less than described output power setting value, the control circuit drive motor of control module rotates and makes the opening degree of application valve body increase; Thereby the thermal output of described fluid heat exchanger maintains described output power setting value; Wherein T1 is the temperature in value of being surveyed, and T2 is the outlet temperature value of being surveyed, and I is the flow value of being surveyed, and ρ is the proportion of described fluid, and C is the specific heat of described fluid.
2. the thermal power distribution valve that is used for fluid heat exchanger as claimed in claim 1 is characterized in that: described flowmeter can be turbo flow meter, vortex shedding flow meter or ultrasonic flowmeter.
3. the thermal power distribution valve that is used for fluid heat exchanger as claimed in claim 1, it is characterized in that: described control module comprises radio receiving unit, is used to receive described output power setting value.
4. the thermal power distribution valve that is used for fluid heat exchanger as claimed in claim 1, it is characterized in that: described control circuit comprises single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101795050A CN102236324A (en) | 2010-05-07 | 2010-05-07 | Thermal power distribution valve for fluid heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101795050A CN102236324A (en) | 2010-05-07 | 2010-05-07 | Thermal power distribution valve for fluid heat exchanger |
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| Publication Number | Publication Date |
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| CN102236324A true CN102236324A (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101795050A Pending CN102236324A (en) | 2010-05-07 | 2010-05-07 | Thermal power distribution valve for fluid heat exchanger |
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| CN (1) | CN102236324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210033302A1 (en) * | 2018-02-22 | 2021-02-04 | Mitsubishi Electric Corporation | Air-conditioning apparatus and air handling unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003069239A1 (en) * | 2002-01-31 | 2003-08-21 | Lowte Ab | Plant for tempering of a building |
| KR20030085235A (en) * | 2002-04-29 | 2003-11-05 | 삼성전자주식회사 | Multi-type air conditioner |
| JP2004218879A (en) * | 2003-01-10 | 2004-08-05 | Matsushita Electric Ind Co Ltd | Air conditioner and its control method |
| CN1607363A (en) * | 2003-10-15 | 2005-04-20 | 中山华帝燃具股份有限公司 | Domestic gas instantaneous water heater capable of realizing gas-air proportional control |
| RU2282792C2 (en) * | 2001-05-03 | 2006-08-27 | Маттс ЛИНДГРЕН | Method and device for control of water flow temperature |
| CN201173591Y (en) * | 2008-01-22 | 2008-12-31 | 默洛尼卫生洁具(中国)有限公司 | Heating system with multi- power automatic select function |
| CN201680760U (en) * | 2010-05-07 | 2010-12-22 | 王卫东 | Thermal power distribution valve used for fluid heat exchanger |
-
2010
- 2010-05-07 CN CN2010101795050A patent/CN102236324A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2282792C2 (en) * | 2001-05-03 | 2006-08-27 | Маттс ЛИНДГРЕН | Method and device for control of water flow temperature |
| WO2003069239A1 (en) * | 2002-01-31 | 2003-08-21 | Lowte Ab | Plant for tempering of a building |
| KR20030085235A (en) * | 2002-04-29 | 2003-11-05 | 삼성전자주식회사 | Multi-type air conditioner |
| JP2004218879A (en) * | 2003-01-10 | 2004-08-05 | Matsushita Electric Ind Co Ltd | Air conditioner and its control method |
| CN1607363A (en) * | 2003-10-15 | 2005-04-20 | 中山华帝燃具股份有限公司 | Domestic gas instantaneous water heater capable of realizing gas-air proportional control |
| CN201173591Y (en) * | 2008-01-22 | 2008-12-31 | 默洛尼卫生洁具(中国)有限公司 | Heating system with multi- power automatic select function |
| CN201680760U (en) * | 2010-05-07 | 2010-12-22 | 王卫东 | Thermal power distribution valve used for fluid heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210033302A1 (en) * | 2018-02-22 | 2021-02-04 | Mitsubishi Electric Corporation | Air-conditioning apparatus and air handling unit |
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Application publication date: 20111109 |