CN103134145A - Water-cooling water chilling unit and control method thereof - Google Patents
Water-cooling water chilling unit and control method thereof Download PDFInfo
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- CN103134145A CN103134145A CN2011103802439A CN201110380243A CN103134145A CN 103134145 A CN103134145 A CN 103134145A CN 2011103802439 A CN2011103802439 A CN 2011103802439A CN 201110380243 A CN201110380243 A CN 201110380243A CN 103134145 A CN103134145 A CN 103134145A
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Abstract
The invention provides a water-cooling water chilling unit and a control method thereof. Cooling water is utilized for cooling and heat dissipation for a frequency converter, temperature of a frequency converter radiator is relatively constant, parts are prevented from being damaged caused by overheating, radiator condensation is prevented from producing disadvantageous influence on the frequency converter, and work stability of the frequency converter is improved. A cooling water pump drives the cooling water to flow in a circulation mode in a circulation pipeline and drives the cooling water to flow in a cooling branch pipeline of the frequency converter, and the frequency converter is cooled by the cooling water flowing through the frequency converter. The frequency converter is provided with a temperature sensing part, a self-reliance type temperature regulating valve is arranged in the cooling branch pipeline of the frequency converter, the self-reliance type temperature regulating valve regulates aperture of the valve by comparing difference values of temperature signals and set temperature of the frequency converter, quantity of the cooling water flowing through the cooling branch pipeline of the frequency converter is further controlled, and temperature of the frequency converter achieves a constant value.
Description
Technical field
The invention belongs to air-conditioning unit control technology field, relate in particular to a kind of control method and water-cooled handpiece Water Chilling Units of water-cooled handpiece Water Chilling Units.
Background technology
In prior art, the water-cooled handpiece Water Chilling Units in air-conditioning equipment is provided with frequency converter, and this frequency converter radiating mode generally adopts the cooling or air blast cooling of nature, and radiating efficiency is low.Will cause thus the temperature of frequency converter can't be constant, the easy cause thermal damage of crossing of device affects the stability of frequency converter work.Simultaneously, do not have effective method that the cooling of frequency converter controlled effectively in prior art.
Summary of the invention
The object of the present invention is to provide a kind of control method and water-cooled handpiece Water Chilling Units of water-cooled handpiece Water Chilling Units, utilize cooling water to carry out cooling heat dissipation to frequency converter, make the temperature of frequency converter radiator relatively constant, prevent that the overheated damage of device and radiator condensation from causing adverse influence to frequency converter, improve the stability of frequency converter work.
The present invention is achieved through the following technical solutions:
The control method of water-cooled handpiece Water Chilling Units, cooling water pump drives cooling water and circulates in circulating line, and cooling water flows into condenser from the water inlet end of condenser, and flows out from the water side of condenser, thereby carries out cooling to condenser; Cooling water pump drives cooling water and flows in the cooling branch road of frequency converter, thereby cooling water flow carries out cooling through frequency converter to frequency converter; Wherein, described frequency converter is provided with temperature sensing device, is provided with self force type temperature regulating valve in the cooling branch road of frequency converter; Described temperature sensing device passes to self force type temperature regulating valve by signal transmission mechanism with the temperature signal of frequency converter, self force type temperature regulating valve passes through to compare the temperature signal of frequency converter and the difference of design temperature, the aperture of control valve, and then control cooling water flow in the cooling branch road of frequency converter of flowing through, make the temperature of frequency converter reach steady state value.
Adopt the water-cooled handpiece Water Chilling Units of above-mentioned control method, include condenser, cooling water pump, cooling tower, frequency converter and control device; Described condenser, cooling water pump and cooling tower connect by circulating line, and chilled water flows in described circulating line; Cooling water pump is connected between cooling tower and condenser; Described condenser includes water inlet end and water side; Described circulating line includes the cooling branch road of frequency converter, and the cooling branch road of described frequency converter is from the water inlet end branch of condenser, and crosses with the connecting pipe of the water side of condenser, and frequency converter is connected in the cooling branch road of described frequency converter; Described frequency converter adopts mode in parallel to be connected with condenser; Described water-cooled handpiece Water Chilling Units includes self force type temperature regulating valve and temperature sensing device, and described self force type temperature regulating valve is connected in cooling branch road; Temperature sensing device is arranged on frequency converter, and self force type temperature regulating valve connects by signal transmission mechanism with temperature sensing device; Described control device includes:
First detection module, for detection of the first temperature, wherein the first temperature is the temperature of frequency converter during first moment; The first temperature during constantly is the frequency converter temperature constantly of starting working;
The first judge module be used for to receive the first temperature value, and whether the difference that judges the first temperature and design temperature is greater than setting value;
The first control module be used for to receive the comparison signal of the first judge module, in the difference of the first temperature and design temperature during greater than setting value, and the valve open of control self force type temperature regulating valve;
The second control module be used for to receive the comparison signal of the first judge module, in the difference of the first temperature and design temperature during less than or equal to setting value, and the valve closing of control self force type temperature regulating valve.
Described frequency converter includes radiator, is arranged in the frequency converter cabinet, and described radiator adopts cooling by water formula structure; Described radiator is connected connecting pipe by the cooling branch road of frequency converter and the water inlet end of condenser and is connected with the water side; Described temperature sensing device is arranged on the surface of spreader surface or frequency converter internal components; Described first detection module is used for detecting in real time the temperature of frequency converter.
Beneficial effect of the present invention is as follows:
The control method of water-cooled handpiece Water Chilling Units of the present invention flow in the cooling branch road of frequency converter because cooling water pump drives cooling water, thereby cooling water flow is carried out cooling through frequency converter to frequency converter.It is cooling that frequency converter uses cooling water to carry out, and cooling water is taken from the water chiller condenser, the water inlet pipe of frequency converter and outlet pipe plug into the respectively water inlet end of condenser and the connecting pipe of water side, and in frequency converter, cooling water can drive circulation by cooling water pump.Simultaneously, the water-cooled handpiece Water Chilling Units includes self force type temperature regulating valve and temperature sensing device, utilize temperature sensing device, self force type temperature regulating valve according to frequency converter temperature and design temperature, regulate the valve opening of self force type temperature regulating valve, and then the radiator water flow in the control frequency converter, make the spreader surface temperature constant and significantly lower than the spreader surface temperature of air cooling system, make the temperature of frequency converter radiator relatively constant, prevent the impact that the overheated damage of device and radiator condensation cause frequency converter, improve the stability of frequency converter work.After the application cooling water dispels the heat, can effectively extend the life-span of frequency converter, simultaneously, due to operating temperature can be constant in a lower scope (less than 45 ℃) components selection capacity can suitably reduce, thereby in the situation that guarantee that stability in use reduces costs.
Description of drawings
Fig. 1 is the syndeton schematic diagram of water-cooled handpiece Water Chilling Units of the present invention;
Fig. 2 is the curved line relation schematic diagram of temperature T 2 and valve opening in the frequency converter cooling means of water-cooled handpiece Water Chilling Units of the present invention.
Fig. 3 is the schematic flow sheet during first moment of the control method of water-cooled handpiece Water Chilling Units of the present invention;
Fig. 4 be water-cooled handpiece Water Chilling Units of the present invention control method enter the second schematic flow sheet during constantly;
Fig. 5 is the control device structural representation of water-cooled handpiece Water Chilling Units of the present invention;
Fig. 6 is the control device overall structure schematic diagram of water-cooled handpiece Water Chilling Units of the present invention.
Description of reference numerals:
1, cooling tower, 2, cooling water pump, 3, condenser, 4, circulating line, 5, self force type temperature regulating valve, 6, frequency converter, 7, temperature sensing device, 8, the cooling branch road of frequency converter, 61, radiator.
The specific embodiment
The invention discloses a kind of control method of water-cooled handpiece Water Chilling Units, cooling water pump drives cooling water and circulates in circulating line, and cooling water flows into condenser from the water inlet end of condenser, and flows out from the water side of condenser, thereby carries out cooling to condenser; Cooling water pump drives cooling water and flows in the cooling branch road of frequency converter, thereby cooling water flow carries out cooling through frequency converter to frequency converter; Wherein, described frequency converter is provided with temperature sensing device, is provided with self force type temperature regulating valve in the cooling branch road of frequency converter; Described temperature sensing device passes to self force type temperature regulating valve by signal transmission mechanism with the temperature signal of frequency converter, self force type temperature regulating valve passes through to compare the temperature signal of frequency converter and the difference of design temperature, the aperture of control valve, and then control cooling water flow in the cooling branch road of frequency converter of flowing through, make the temperature of frequency converter reach steady state value.
The temperature signal of described frequency converter is the surface temperature of radiator of frequency converter or the surface temperature of frequency converter.
The control method of described water-cooled handpiece Water Chilling Units as Fig. 3, comprises that the concrete steps during first moment are as follows:
Step S1: beginning;
Step S2: detect the first temperature, wherein the first temperature is frequency converter or the temperature of radiator during first moment, particularly, in the frequency converter course of work, detects in real time the temperature of frequency converter or radiator by temperature inductor; The first temperature during constantly is the frequency converter temperature constantly of starting working;
Step S3: whether judge the difference of the first temperature and design temperature greater than setting value, as greater than setting value execution in step S4, otherwise execution in step S5;
Step S4: valve open to the first aperture of controlling self force type temperature regulating valve;
Step S5: the valve closing of controlling self force type temperature regulating valve;
Step S6: the control process during finishing for first moment.
The setting value of the difference of described the first temperature and design temperature is-10 degrees centigrade.
The control method of described water-cooled handpiece Water Chilling Units as Fig. 2,4, comprises that also the concrete steps during second moment are as follows:
Step S7: beginning;
Step S8: when judging that difference that described water-cooled handpiece Water Chilling Units is in the first temperature and design temperature is greater than-10 degrees centigrade, control self force type temperature regulating valve and be in the first aperture state, continue the aperture of self force type temperature regulating valve is regulated;
Step S9: be in second detection time constantly, detect the second temperature of frequency converter and radiator;
Step S10: judge that whether the difference of the second temperature and design temperature is greater than-10 degrees centigrade, when the difference of the second temperature and design temperature less than or equal to-10 degrees centigrade, execution in step S12,, control self force type temperature regulating valve and remain on the first aperture or control self force type temperature regulating valve and increase aperture greater than-10 degrees centigrade when the difference of the second temperature and design temperature;
Step S11: control self force type temperature regulating valve and press set model adjusting aperture size;
Step S12: the valve closing of controlling self force type temperature regulating valve;
Step S13: finish.
In above-mentioned steps S10, control self force type temperature regulating valve and keep still increasing aperture, carry out by the set model of step S11; Be specially: greater than-10 degrees centigrade, calculate the difference of the second temperature and design temperature according to equation curve Y=0.00002x when the difference of the second temperature and design temperature
2+ 0.03x+0.2 controls the valve opening of self force type temperature regulating valve; Wherein, the difference of the second temperature and design temperature is T2, and X is the T2 temperature value; Y is the aperture amount of U self force type temperature regulating valve in figure.
Described design temperature scope: between 55 ℃～90 ℃.
As shown in Figure 2, the concrete control logic of the frequency converter cooling means of above-mentioned water-cooled handpiece Water Chilling Units is: establish the temperature sensing device temperature and be T1 (unit for ℃), design temperature is T (unit for ℃), the difference of design temperature T and temperature sensing device temperature T 1 is T2 (unit for ℃), be T1-T=T2, if the aperture of self force type temperature regulating valve is U (unit is %), press Fig. 2 curve, regulate according to the aperture of 2 pairs of valves of temperature T.This curve is the thermal balance that guarantees radiator when design temperature T equals inductor temperature T 1, moves to-10 ℃ after the intersection point with curve and temperature (T2) and locates, and has guaranteed in the time of T2=0 ℃, and the aperture of self force type temperature regulating valve is that U is still 20%.Simultaneously, in order to guarantee the temperature-responsive rapidity in high temperature section, this curve is not simple direct proportion curve, but quadratic curve, namely the aperture of self force type temperature regulating valve is that U (unit is %) and the pass of temperature T 2 are quadratic curve.
The approximate equation of curve is: Y=0.00002x
2(X is T2 temperature in figure to+0.03x+0.2; Y is the aperture of U self force type temperature regulating valve in figure) further control mode be: the first detected temperatures module is the temperature during constantly for detection of radiator first, and the first judge module is used for temperature T 1_1 that judgement first detects constantly and the difference T2_1 between design temperature T and according to curve approximation equation: Y=0.00002x
2+ 0.03x+0.2 adjusts valve opening.After this, if remaining on T1_1 always, detected temperatures do not change, valve opening does not change, if the inductor temperature changes, the second detection module is for detection of the second constantly temperature, and the second judge module is used for judgement second temperature T 1_2 and the difference T2_2 between temperature T and according to curve approximation equation: Y=0.00002x constantly
2+ 0.03x+0.2 adjusts valve opening.So circulation guarantees the aperture by inductor temperature and the real-time control valve of operation curve.
Adopt the water-cooled handpiece Water Chilling Units of above-mentioned control method, as Fig. 1,5, include condenser, cooling water pump, cooling tower, frequency converter and control device; Described condenser, cooling water pump and cooling tower connect by circulating line, and chilled water flows in described circulating line; Cooling water pump is connected between cooling tower and condenser; Described condenser includes water inlet end and water side; Described circulating line includes the cooling branch road of frequency converter, and the cooling branch road of described frequency converter is from the water inlet end branch of condenser, and crosses with the connecting pipe of the water side of condenser, and frequency converter is connected in the cooling branch road of described frequency converter; Described frequency converter adopts mode in parallel to be connected with condenser; Described water-cooled handpiece Water Chilling Units includes self force type temperature regulating valve and temperature sensing device, and described self force type temperature regulating valve is connected in the cooling branch road of frequency converter between the water inlet end of frequency converter and condenser; Temperature sensing device is arranged on frequency converter, and self force type temperature regulating valve connects by signal transmission mechanism with temperature sensing device; Described control device includes:
The first judge module 20 be used for to receive the first temperature signal, and whether the difference that judges the first temperature and design temperature is greater than setting value;
The first control module 30 be used for to receive the comparison signal of the first judge module 20, in the difference of the first temperature and design temperature during greater than setting value, and the valve open of control self force type temperature regulating valve;
The second control module 40 be used for to receive the comparison signal of the first judge module 20, in the difference of the first temperature and design temperature during less than or equal to setting value, and the valve closing of control self force type temperature regulating valve.
Described frequency converter includes radiator, is arranged in the frequency converter cabinet, and described radiator adopts cooling by water formula structure; Described radiator is connected with the water side with the water inlet end of condenser by the cooling branch road of frequency converter; Described temperature sensing device is arranged on the surface of spreader surface or frequency converter internal components; Described first detection module 10 is used for detecting in real time the temperature of frequency converter.
As Fig. 6, described control device also comprises:
The second detection module 50 is used for after self force type temperature regulating valve is in the first aperture, detects the second temperature, and wherein the second temperature is frequency converter and radiator in the second constantly temperature;
The second judge module 60 is used for receiving the second temperature signal, judges that whether the difference of the second temperature and design temperature is greater than setting value;
The first computing module 70 is used for calculating the difference of the second temperature and design temperature, and calculates valve opening corresponding to this difference;
The 3rd control module 80 for the aperture of the self force type temperature regulating valve that it is calculated that out, is regulated self force type temperature regulating valve and is in corresponding aperture.
Specific embodiment:
Ask for an interview Fig. 1, the invention discloses a kind of water-cooled handpiece Water Chilling Units, include condenser 3, cooling water pump 2, cooling tower 1 and frequency converter 6; Described condenser 3, cooling water pump 2 are connected with cooling tower by circulating line 4 connections, and chilled water flows in described circulating line 4; Cooling water pump 2 is connected between cooling tower 1 and condenser 3; Described condenser 3 includes water inlet end and water side; Wherein, described circulating line 4 includes the cooling branch road 8 of frequency converter, and the cooling branch road 8 of described frequency converter is from the water inlet end branch of condenser, and crosses with the water side of condenser, and frequency converter 6 is connected in the cooling branch road of described frequency converter.
Described frequency converter 6 adopts mode in parallel to be connected with condenser 3.
Described water-cooled handpiece Water Chilling Units includes self force type temperature regulating valve 5 and temperature sensing device 7, and described self force type temperature regulating valve 5 is connected in the cooling branch road 8 of frequency converter between the water inlet end of frequency converter 6 and condenser; Temperature sensing device 7 is arranged on frequency converter 6, and self force type temperature regulating valve 5 is connected with temperature sensing device and is connected by signal transmission mechanism.
Described frequency converter 6 includes radiator 61, is arranged in the frequency converter cabinet, and described radiator 61 adopts cooling by water formula structure; Described radiator 61 is connected with the water side with the water inlet end of condenser by the cooling branch road 8 of frequency converter; Described temperature sensing device 7 is arranged on the surface of radiator 61 surfaces or frequency converter internal components.
Described temperature sensing device 7 is a kind of temperature sensor.
Direct-operated regulator is that a kind of dependence is flowed through the pressure, temperature of medium self in valve as driven by energy valve automatic operation, does not need the secondary meter of external power supply.Direct-operated regulator all utilizes the feedback signal (pressure, pressure reduction, temperature) of valve output to be delivered to executing agency by signal pipe and drives the aperture that flap changes valve, reaches the purpose of regulating pressure, flow, temperature.Direct-operated regulator is a new control valve kind.With respect to manual modulation valve, its advantage is automatically to regulate; With respect to electric control valve, its advantage is not need external impetus.Application practice proves, in closed-loop water system (as hot-water heating system, air conditioning water system), correctly uses this valve, can realize easily the assignment of traffic of system; Can realize the dynamic equilibrium of system; Can greatly simplify the debugging work of system; Can stablize the duty of pump etc.
Self force type temperature regulating valve utilizes heated liquid to expand and the incompressible principle of liquid realizes automatically regulating.Expansion of liquids in temperature sensor is uniformly, and its control action is that ratio is regulated.When controlled medium temperature changed, the temperature sensing liquid volume in sensor was along with expanding or shrinking.Controlled medium temperature is higher than when setting value, and temperature sensing liquid expands, and promotes the downward valve-off of spool, reduces the flow of heating agent; The temperature of controlled medium is lower than when setting value, and temperature sensing liquid shrinks, and back-moving spring promotes spool and opens, and increases the flow of heating agent.
Therefore, the handling characteristics of self force type temperature regulating valve: install simply, need not the power supply source of the gas, regulate and set simple and easy, balance valve core design.Self force type temperature regulating valve has wider Temperature Setting scope; clear display, precision are high; and be provided with overload protection arrangement; safe and reliable, thereby be widely used in the temperature that chemical industry, oil, electric power, metallurgy, food, light textile, people China Democratic National Construction Association builds the equipment such as the various heat supplies such as housing-group, hotel, restaurant, water supply, refrigeration, sterilizing and automatically regulate.
Water-cooled handpiece Water Chilling Units of the present invention and frequency converter cooling means thereof, the frequency converter radiator uses cooling water to carry out cooling, cooling water is taken from the water chiller condenser, the water inlet pipe of radiator and outlet pipe plug into respectively water inlet end and the water side of condenser, in radiator, cooling water can drive circulation by cooling water pump.Simultaneously on radiator inleting pipe or outlet pipe, self force type temperature regulating valve is installed; temperature sensing device installation and spreader surface or the frequency converter device surface that need to dispel the heat; so just can regulate the discharge in radiator according to the temperature of the frequency converter device of radiator or needs heat radiation; make radiator or frequency converter device temperature constant; both can avoid excess Temperature to cause the protection of frequency converter device; also can avoid the too low condensation that causes of temperature, make the frequency converter device open circuit or damage.In order to make spreader surface not produce condensation, design temperature needs higher than the environment for use temperature, but thereby the too high meeting of design temperature makes the overheated reduction of radiator radiating efficiency, normal environment for use temperature is below 45 ℃, the maximum operating temperature of the heat dissipation equipments such as power device is over 100 ℃, therefore native system is recommended design temperature is adjusted between 55 ℃～90 ℃, so that system well operates.
The invention has the advantages that: 1 does not need electric power or electronic signal to drive fully can turn round, and reliability is high, and is especially in the comparatively abominable occasion of the electromagnetic environments such as frequency converter, anti-interference adaptable.2 can manually set the constant temperature point, realize the constant of radiator operating temperature.
Water-cooled handpiece Water Chilling Units of the present invention is transformed the frequency converter cooling system, increases the respective line device, and it is included in the main frame water system.
Above-mentioned listed specific implementation is nonrestrictive, to one skilled in the art, is not departing from the scope of the invention, and the various modifications and variations of carrying out all belong to protection scope of the present invention.
Claims (10)
1. the control method of water-cooled handpiece Water Chilling Units, cooling water pump drives cooling water and circulates in circulating line, and cooling water flows into condenser from the water inlet end of condenser, and flows out from the water side of condenser, thereby carries out cooling to condenser; Cooling water pump drives cooling water and flows in the cooling branch road of frequency converter, thereby cooling water flow carries out cooling through frequency converter to frequency converter; It is characterized in that: described frequency converter is provided with temperature sensing device, is provided with self force type temperature regulating valve in the cooling branch road of frequency converter; Described temperature sensing device passes to self force type temperature regulating valve by signal transmission mechanism with the temperature signal of frequency converter, self force type temperature regulating valve passes through to compare the temperature signal of frequency converter and the difference of design temperature, the aperture of control valve, and then control cooling water flow in the cooling branch road of frequency converter of flowing through, make the temperature of frequency converter reach steady state value.
2. the control method of water-cooled handpiece Water Chilling Units as claimed in claim 1 is characterized in that: the temperature signal of described frequency converter is the surface temperature of radiator of frequency converter or the surface temperature of frequency converter.
3. the control method of water-cooled handpiece Water Chilling Units as claimed in claim 2 is characterized in that: the control method of described water-cooled handpiece Water Chilling Units comprises that the first concrete steps during constantly are as follows:
Step S1: beginning;
Step S2: detect the first temperature, wherein the first temperature is frequency converter or the temperature of radiator during first moment, particularly, in the frequency converter course of work, detects in real time the temperature of frequency converter or radiator by temperature inductor; The first temperature during constantly is the frequency converter temperature constantly of starting working;
Step S3: whether judge the difference of the first temperature and design temperature greater than setting value, as greater than setting value execution in step S4, otherwise execution in step S5;
Step S4: valve open to the first aperture of controlling self force type temperature regulating valve;
Step S5: the valve closing of controlling self force type temperature regulating valve;
Step S6: the control process during finishing for first moment.
4. the control method of water-cooled handpiece Water Chilling Units as claimed in claim 3, it is characterized in that: the setting value of the difference of described the first temperature and design temperature is-10 degrees centigrade.
5. the control method of water-cooled handpiece Water Chilling Units as claimed in claim 4 is characterized in that: the control method of described water-cooled handpiece Water Chilling Units comprises that the second concrete steps during constantly are as follows:
Step S7: beginning;
Step S8: when judging that difference that described water-cooled handpiece Water Chilling Units is in the first temperature and design temperature is greater than-10 degrees centigrade, control self force type temperature regulating valve and be in the first aperture state, continue the aperture of self force type temperature regulating valve is regulated;
Step S9: be in second detection time constantly, detect the second temperature of frequency converter and radiator;
Step S10: judge that whether the difference of the second temperature and design temperature is greater than-10 degrees centigrade, when the difference of the second temperature and design temperature less than or equal to-10 degrees centigrade, execution in step S12,, control self force type temperature regulating valve and remain on the first aperture or control self force type temperature regulating valve and increase aperture greater than-10 degrees centigrade when the difference of the second temperature and design temperature;
Step S11: control self force type temperature regulating valve and press set model adjusting aperture size;
Step S12: the valve closing of controlling self force type temperature regulating valve;
Step S13: finish.
6. the control method of water-cooled handpiece Water Chilling Units as claimed in claim 5; It is characterized in that: in step S10, control self force type temperature regulating valve and keep still increasing aperture, carry out by the set model of step S11; Be specially: greater than-10 degrees centigrade, calculate the difference of the second temperature and design temperature according to equation curve Y=0.00002x when the difference of the second temperature and design temperature
2+ 0.03x+0.2 controls the valve opening of self force type temperature regulating valve; Wherein, the difference of the second temperature and design temperature is T2, and X is the T2 temperature value; Y is the aperture amount of U self force type temperature regulating valve in figure.
7. the control method of water-cooled handpiece Water Chilling Units as described in any one in claim 3 to 6, is characterized in that: described design temperature scope: between 55 ℃～90 ℃.
8. adopt the water-cooled handpiece Water Chilling Units as any one described control method in claim 1 to 6, include condenser, cooling water pump, cooling tower, frequency converter and control device; Described condenser, cooling water pump and cooling tower connect by circulating line, and chilled water flows in described circulating line; Cooling water pump is connected between cooling tower and condenser; Described condenser includes water inlet end and water side; Described circulating line includes the cooling branch road of frequency converter, and the cooling branch road of described frequency converter is from the water inlet end branch of condenser, and crosses with the connecting pipe of the water side of condenser, and frequency converter is connected in the cooling branch road of described frequency converter; Described frequency converter adopts mode in parallel to be connected with condenser; It is characterized in that: described water-cooled handpiece Water Chilling Units includes self force type temperature regulating valve and temperature sensing device, and described self force type temperature regulating valve is connected in cooling branch road; Temperature sensing device is arranged on frequency converter, and self force type temperature regulating valve connects by signal transmission mechanism with temperature sensing device; Described control device includes:
First detection module (10), for detection of the first temperature, wherein the first temperature is the temperature of frequency converter during first moment; The first temperature during constantly is the frequency converter temperature constantly of starting working;
The first judge module (20) be used for to receive the first temperature signal, and whether the difference that judges the first temperature and design temperature is greater than setting value;
The first control module (30) be used for to receive the comparison signal of the first judge module (20), in the difference of the first temperature and design temperature during greater than setting value, and the valve open of control self force type temperature regulating valve;
The second control module (40) be used for to receive the comparison signal of the first judge module (20), in the difference of the first temperature and design temperature during less than or equal to setting value, and the valve closing of control self force type temperature regulating valve.
9. water-cooled handpiece Water Chilling Units as claimed in claim 8, it is characterized in that: described frequency converter includes radiator, is arranged in the frequency converter cabinet, and described radiator adopts cooling by water formula structure; Described radiator is connected connecting pipe by the cooling branch road of frequency converter and the water inlet end of condenser and is connected with the water side; Described temperature sensing device is arranged on the surface of spreader surface or frequency converter internal components; Described first detection module (10) is used for detecting in real time the temperature of frequency converter.
10. water-cooled handpiece Water Chilling Units as claimed in claim 9, it is characterized in that: described control device also comprises:
The second detection module (50) is used for after self force type temperature regulating valve is in the first aperture, detects the second temperature, and wherein the second temperature is frequency converter and radiator in the second constantly temperature;
The second judge module (60) is used for receiving the second temperature signal, judges that whether the difference of the second temperature and design temperature is greater than setting value;
The first computing module (70) is used for calculating the difference of the second temperature and design temperature, and calculates valve opening corresponding to this difference;
The 3rd control module (80) for the aperture of the self force type temperature regulating valve that it is calculated that out, is regulated self force type temperature regulating valve and is in corresponding aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110380243.9A CN103134145B (en) | 2011-11-24 | 2011-11-24 | The control method of water cooled chiller and water cooled chiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110380243.9A CN103134145B (en) | 2011-11-24 | 2011-11-24 | The control method of water cooled chiller and water cooled chiller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103134145A true CN103134145A (en) | 2013-06-05 |
| CN103134145B CN103134145B (en) | 2016-03-02 |
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Cited By (12)
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| CN103312125A (en) * | 2012-03-07 | 2013-09-18 | 珠海格力电器股份有限公司 | Air conditioner, and cooling system and cooling method of centrifugal unit transducer in air conditioner |
| CN103868791A (en) * | 2014-03-12 | 2014-06-18 | 西安石油大学 | Method and device for cooling fatigue testing machine |
| CN104566835A (en) * | 2015-01-27 | 2015-04-29 | 珠海格力电器股份有限公司 | Control method and control system of condensation prevention of chilled water type air conditioner |
| CN104713204A (en) * | 2013-12-11 | 2015-06-17 | 珠海格力电器股份有限公司 | Air conditioning unit and control method |
| CN106546020A (en) * | 2016-10-27 | 2017-03-29 | 重庆美的通用制冷设备有限公司 | Air conditioning system |
| WO2018032314A1 (en) * | 2016-08-16 | 2018-02-22 | 陈玮彤 | Computer chassis |
| CN108195874A (en) * | 2017-12-27 | 2018-06-22 | 中国航天空气动力技术研究院 | A kind of constant temperature water cooled mo(u)ld molding box |
| CN108318227A (en) * | 2018-01-10 | 2018-07-24 | 山东钢铁股份有限公司 | Self-supporting temperature control valve detection device and detection method |
| CN108375901A (en) * | 2018-02-28 | 2018-08-07 | 爱美达（上海）热能系统有限公司 | A kind of High Accuracy Constant Temperature constant flow Auto-Test System and its control method |
| CN111964239A (en) * | 2020-08-26 | 2020-11-20 | 广东美的暖通设备有限公司 | Control method of air conditioner, and computer-readable storage medium |
| CN113700655A (en) * | 2020-05-21 | 2021-11-26 | 上海凯士比泵有限公司 | Inside and outside self-loopa's cooling system of converter and motor integrated device |
| CN114738872A (en) * | 2022-04-19 | 2022-07-12 | 武汉港迪技术股份有限公司 | Heat recovery system and method for water-cooled frequency converter of central air conditioner |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103312125B (en) * | 2012-03-07 | 2016-06-08 | 珠海格力电器股份有限公司 | The cooling system of centrifugal unit inverter and method of cooling in conditioner, conditioner |
| CN103312125A (en) * | 2012-03-07 | 2013-09-18 | 珠海格力电器股份有限公司 | Air conditioner, and cooling system and cooling method of centrifugal unit transducer in air conditioner |
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| CN104713204A (en) * | 2013-12-11 | 2015-06-17 | 珠海格力电器股份有限公司 | Air conditioning unit and control method |
| CN103868791A (en) * | 2014-03-12 | 2014-06-18 | 西安石油大学 | Method and device for cooling fatigue testing machine |
| CN104566835A (en) * | 2015-01-27 | 2015-04-29 | 珠海格力电器股份有限公司 | Control method and control system of condensation prevention of chilled water type air conditioner |
| WO2018032314A1 (en) * | 2016-08-16 | 2018-02-22 | 陈玮彤 | Computer chassis |
| CN106546020A (en) * | 2016-10-27 | 2017-03-29 | 重庆美的通用制冷设备有限公司 | Air conditioning system |
| CN106546020B (en) * | 2016-10-27 | 2018-04-06 | 重庆美的通用制冷设备有限公司 | Air-conditioning system |
| CN108195874A (en) * | 2017-12-27 | 2018-06-22 | 中国航天空气动力技术研究院 | A kind of constant temperature water cooled mo(u)ld molding box |
| CN108318227A (en) * | 2018-01-10 | 2018-07-24 | 山东钢铁股份有限公司 | Self-supporting temperature control valve detection device and detection method |
| CN108375901A (en) * | 2018-02-28 | 2018-08-07 | 爱美达（上海）热能系统有限公司 | A kind of High Accuracy Constant Temperature constant flow Auto-Test System and its control method |
| CN113700655A (en) * | 2020-05-21 | 2021-11-26 | 上海凯士比泵有限公司 | Inside and outside self-loopa's cooling system of converter and motor integrated device |
| CN111964239A (en) * | 2020-08-26 | 2020-11-20 | 广东美的暖通设备有限公司 | Control method of air conditioner, and computer-readable storage medium |
| CN111964239B (en) * | 2020-08-26 | 2022-02-18 | 广东美的暖通设备有限公司 | Control method of air conditioner, and computer-readable storage medium |
| CN114738872A (en) * | 2022-04-19 | 2022-07-12 | 武汉港迪技术股份有限公司 | Heat recovery system and method for water-cooled frequency converter of central air conditioner |
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