CN201028094Y

CN201028094Y - Integrated electric proportion valve

Info

Publication number: CN201028094Y
Application number: CNU2007201498185U
Authority: CN
Inventors: 蒋庆; 汤建斌; 蔡晋辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-30
Filing date: 2007-04-30
Publication date: 2008-02-27
Anticipated expiration: 2017-04-30

Abstract

The utility model relates to an integrative electric proportional valve. A stepping motor, a control module, an intake duct and an eduction tube are integratively encapsulated inside a housing of the utility model, wherein, the eduction tube which is arranged at the spout inside the housing is provided with a valve which is connected with the stepping motor. The control module comprises a sampling unit, a central processing unit of a driving unit and a power supply module providing the working power supply for the whole valve, wherein, the driving unit is connected with the stepping motor by the interface of the stepping motor; the control program is stored in the central processing unit. The driving and the control strategy of the stepping motor of the utility model can be achieved all by the control module of the valve; the valve and an air conditioner system are matched well; thereby, the assembly of the air conditioner is very convenient, and the production efficiency is improved significantly. Furthermore, the tie lines between the valve and the air conditioner system are reduced, and the driving signal transmission lines of the stepping motor are shortened, which makes the control simplified, the tie lines orderly, the disturbance and the radicalization effectively reduced, and the operation of the whole air conditioner system more reliable.

Description

The integrated electric Proportional valve

Technical field

The utility model relates to a kind of air-conditioning component, relates in particular to a kind of integrated electric Proportional valve.

Background technique

At present in refrigeration industry, the parts of regulating refrigerant flow all are to use electric expansion valve, a kind of " electric expansion valve " disclosed as Chinese patent literature CN200410093130.0, this valve is to utilize the stepper motor principle, rotate with the coil drive rotor part, change the valve port circulation area by certain driving mechanism again, thereby make the refrigeration agent of the valve port of flowing through consistent, realize flow control with predetermined flow-pulse curve.But also there is following shortcoming in this valve: the control section of (1) valve separates from outside the valve body, needs 2 power lines to link to each other complex circuit, cost height with 4 step motor drive signaling lines between the two at least; (2) because the drive signal of stepper motor is the square signal of certain sequential, and driving current reaches 0.1～0.3A, will certainly produce on long transmission line and disturb and radiation; (3) method for driving of electric expansion valve and strategy are all realized by the air-conditioner controller master control borad, because the control circuit of different manufacturers is different with method, the characteristic that causes the electric expansion valve of same specification to reflect on the air-conditioning control panel of different size is inconsistent, therefore refrigerator manufacturer needs to change according to the valve that uses the structure and the program of refrigerator controller master control borad, thereby brings a lot of inconvenience for the assembling of refrigerator.

Summary of the invention

The utility model mainly solves existing electronic expansion valve controls complexity, disturb and radiation, assembling brings the technical problem of a lot of inconvenience to air-conditioning; Provide a kind of control simple, effectively reduce and disturb and radiation, and need not to change the air-conditioner controller master control borad and can match with valve, guarantee that air-conditioning assembles integrated electric Proportional valve very easily.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: the utility model comprises housing, an ingress pipe that links to each other with housing, a delivery line, the mouth of pipe place that delivery line is positioned at housing is provided with the valve that links to each other with stepper motor, go back one in the described housing and be packaged with control module, the output terminal of described control module links to each other with stepper motor, and the input end of control module stays outside housing by connecting line.After control module and jam pot cover are dressed up one, driving and control strategy thereof to stepper motor are all finished by the control module of valve self, for different refrigerator manufacturers, all only need provide the external setting-up signal, do not need to change the air-conditioning master control borad, thereby make the air-conditioning assembling very convenient, enhance productivity greatly.On the other hand, the drive signal transmission line of stepper motor is positioned at valve inside, has shortened length greatly, has effectively reduced interference and radiation, makes the running of motor more reliable.

As preferably, described control module comprises central processing unit that is connected with sampling unit, driver element and the power module that working power is provided for whole valve, driver element links to each other with stepper motor, the input end of sampling unit stays outside housing by connecting line, and the central processing unit internal memory contains control program.Air-conditioning when assembling, the input end of sampling unit is linked to each other with the setting signal control piece of air-conditioning.Sampling unit is gathered the state of setting signal and is sent to central processing unit, central processing unit is by being stored in analysis, computing, the processing of inner control program, produce the drive pulse signal of stepper motor, drive pulse signal drives the stepper motor rotation through the power amplification of over-drive unit again, the rotating band movable valve of stepper motor rotates or moves, the delivery line thereby the aperture of control delivery line, the flow that refrigerant medium is needed by the user are flowed through.Control signal is the DC voltage/current signal, and proportional with the aperture of valve.Control is simple, has also reduced simultaneously and has assembled empty tarry valve and outside line, makes the air-conditioning interconnector more succinct.

As preferably, described housing is provided with three cores or four-core interface, and two cores of interface link to each other with power module, and an other core or two cores link to each other with described sampling unit.Outside 2 power lines and 1 (or the 2) control signal line of only needing of dynamoelectric proportion valve.During assembling, two cores that link to each other with power module in the interface link to each other with the power-supply system of air-conditioning, and a core that links to each other with sampling unit or two cores link to each other with the setting signal control piece of air-conditioning.Make control convenient, the assembling of being more convenient for, cabling is clean and tidy, saves cost.

As preferably, link to each other by the stepper motor interface between described driver element and stepper motor.The assembling of guaranteeing valve is more convenient, guarantees that also the line of valve inside is more firm, also is convenient to maintenance.

The beneficial effects of the utility model are: by control module and jam pot cover are dressed up one, the driving and the control strategy thereof of realization stepper motor are all finished by the control module of valve self, for different air conditioning system makers, all only need provide the external setting-up signal, do not need to change the air-conditioning master control borad, thereby make the air-conditioning assembling very convenient, enhance productivity greatly; On the other hand, the drive signal transmission line of stepper motor is positioned at valve inside, has shortened length greatly, has effectively reduced interference and radiation, makes the running of motor more reliable; Valve only needs two power lines and one or two guide lines with the line of outside, makes the air-conditioning interconnector more succinct, controls simpler.

Description of drawings

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is that a kind of circuit of the present utility model connects block diagram.

Fig. 3 is a kind of circuit theory diagrams of control module in the utility model.

Fig. 4 is a kind of software flow pattern of control program in the utility model.

1. housings among the figure, 2. ingress pipe, 3. delivery line, 4. stepper motor, 5. control module, 6. sampling unit, 7. driver element, 8. central processing unit, 9. power module, 10. interface.

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment 1: the integrated electric Proportional valve of present embodiment, as shown in Figure 1, one is packaged with stepper motor 4, control module 5, ingress pipe 2, a delivery line 3 in the housing 1, and the mouth of pipe place that delivery line 3 is positioned at housing 1 is equipped with the valve that links to each other with stepper motor 4.As shown in Figure 2, control module 5 comprises central processing unit 8 that is connected with sampling unit 6, driver element 7 and the power module 9 that working power is provided for whole valve, 4 of driver element 7 and stepper motors link to each other by the stepper motor interface, and central processing unit 8 internal memories contain control program.The core that one three core interface, 10, three core interfaces 10 are installed on the housing 1 links to each other with sampling unit 6, and other two cores link to each other with power module 9.

All elements are welded on the circuit board on the control module 5 in the present embodiment, as shown in Figure 3, power module 9 is made of diode D1, capacitor C 1, C2, C3, C4, voltage-stabiliser tube IC1, import by interface JP1 by 7～15VDC power supply that the air-conditioning power-supply system provides, through D1 rectification, C1 and C2 filtering,, pass through the voltage transitions of voltage-stabiliser tube IC1 simultaneously for stepper motor provides DC12V operating voltage, generation+5VDC voltage is for other elements on the circuit board provide operating voltage.

Sampling unit 6 is made of resistance R 1, R2, capacitor C 5, and the control signal that the air-conditioning control piece is imported inputs to resistance R 1 by interface JP2.The effect of sampling unit is that the external setting-up signal is carried out signal condition, when the external setting-up signal is voltage signal (0.5～4.5VDC or 0.5～4.5VDC) time, R1=1K, R2=0; When the external setting-up signal be current signal (4～20mA) time, R1=0, R2=250 Ω is converted to current signal the voltage signal of 1～5VDC.Again through sending central processing unit 8 to after capacitor C 3 filtering.

Central processing unit 8 is made of a slice R8C single-chip microcomputer, the A/D converter that this single-chip microcomputer is inner integrated 10, the 25th pin of single-chip microcomputer receives the signal that sampling unit 6 is sent here, the motor driving pulse that after the analysis of A/D conversion, internal control program, calculating, processing, produces certain sequential, the rotation of control step motor 4.The software flow pattern of control program as shown in Figure 4, after powering on, the rotor that control program drives the earlier stepper motor position of making zero, detect the input signal of sampling unit, need rotation angle and direction according to this calculated signals rotor, drive motor rotates, and the storage motor position, after motor puts in place, detect the input signal of sampling unit again.When stepper motor was in hold mode, driving pulse all was a high level, guaranteed that the motor windings electric current is zero.The inner integrated EEPROM of R8C, stepper motor revolution once, R8C just is stored in rotation angle among the EEPROM, after re-powering next time, these data is accessed the assurance rotor position of suitably making zero again.

Driver element 7 is a slice intergrated circuit ULC2003, ULC2003 has 7 independent power amplification channels, link to each other with the stepper motor winding by stepper motor interface JP3 behind the driving pulse process chip ULC2003 that single-chip microcomputer R8C produces, the driving pulse of big electric current is provided for winding.

The rotation of stepper motor 4 drives valve by driving mechanism and rotates or move, the different input signal values of sampling unit, determine opening of different valves, the flow that the refrigerant medium that makes air-conditioning needs by the user delivery line of flowing through, thereby the cryogenic temperature of control air-conditioning.

The utility model has reduced the line of valve and air-conditioning system, has shortened the step motor drive signal transmssion line, makes control simple, and line is clean and tidy, effectively reduces and disturbs and radiation, makes whole air-conditioning system running more reliable.The more important thing is, the driving of stepper motor and control strategy thereof are all finished by the control module of valve self, and air conditioning system maker only need provide one or two external setting-up signals, does not need to change the air-conditioning master control borad, thereby make the air-conditioning assembling very convenient, enhance productivity greatly.

Claims

1. integrated electric Proportional valve, comprise housing (1), an ingress pipe (2) that links to each other with housing, a delivery line (3), the mouth of pipe place that delivery line (3) is positioned at housing (1) is provided with the valve that links to each other with stepper motor (4), it is characterized in that going back in the described housing (1) one and be packaged with control module (5), the output terminal of described control module (5) links to each other with stepper motor (4), and the input end of control module (5) stays outside housing (1) by connecting line.

2. integrated electric Proportional valve according to claim 1, it is characterized in that described control module (5) comprises central processing unit (8) that is connected with sampling unit (6), driver element (7) and the power module (9) that working power is provided for whole valve, driver element (7) links to each other with stepper motor (4), the input end of sampling unit (6) stays outside housing (1) by connecting line, and central processing unit (8) internal memory contains control program.

3. integrated electric Proportional valve according to claim 1 and 2, it is characterized in that described housing (1) is provided with three cores or four-core interface (10), two cores of interface (10) link to each other with described power module (9), and an other core or two cores link to each other with described sampling unit (6).

4. integrated electric Proportional valve according to claim 1 and 2 is characterized in that linking to each other by the stepper motor interface between described driver element (7) and stepper motor (4).