CN103134145B - The control method of water cooled chiller and water cooled chiller - Google Patents
The control method of water cooled chiller and water cooled chiller Download PDFInfo
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- CN103134145B CN103134145B CN201110380243.9A CN201110380243A CN103134145B CN 103134145 B CN103134145 B CN 103134145B CN 201110380243 A CN201110380243 A CN 201110380243A CN 103134145 B CN103134145 B CN 103134145B
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Abstract
The invention provides a kind of control method and water cooled chiller of water cooled chiller, cooling water is utilized to carry out cooling heat dissipation to frequency converter, make the temperature relative constancy of frequency converter radiator, prevent the overheated damage of device and radiator condensation from causing adverse influence to frequency converter, improve the stability of frequency converter work.Cooling water pump drives cooling water to circulate in circulating line, and cooling water pump drives cooling water to flow in frequency converter cooling branch road, and cooling water flow is through frequency converter thus cool frequency converter; Described frequency converter is provided with temperature sensing device, is provided with self force type temperature regulating valve in frequency converter cooling branch road; The temperature signal of frequency converter is passed to self force type temperature regulating valve by signal transmission mechanism by described temperature sensing device, self force type temperature regulating valve is by the difference of the temperature signal and design temperature that compare frequency converter, the aperture of control valve, and then control flow check cooling water flow in frequency converter cooling branch road, make the temperature of frequency converter reach steady state value.
Description
Technical field
The invention belongs to air-conditioner set control technology field, particularly relate to a kind of control method and water cooled chiller of water cooled chiller.
Background technology
In prior art, the water cooled chiller in air-conditioning equipment is provided with frequency converter, and this frequency converter radiating mode generally adopts nature to cool or air blast cooling, and radiating efficiency is low.Will cause the temperature of frequency converter cannot be constant thus, device is easy crosses cause thermal damage, affects the stability of frequency converter work.Meanwhile, the cooling of effective method to frequency converter is not had effectively to control in prior art.
Summary of the invention
The object of the present invention is to provide a kind of control method and water cooled chiller of water cooled chiller, cooling water is utilized to carry out cooling heat dissipation to frequency converter, make the temperature relative constancy of frequency converter radiator, prevent 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 chiller, cooling water pump drives cooling water to circulate 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, thus cools condenser; Cooling water pump drives cooling water to flow in frequency converter cooling branch road, and cooling water flow is through frequency converter thus cool frequency converter; Wherein, described frequency converter is provided with temperature sensing device, is provided with self force type temperature regulating valve in frequency converter cooling branch road; The temperature signal of frequency converter is passed to self force type temperature regulating valve by signal transmission mechanism by described temperature sensing device, self force type temperature regulating valve is by the difference of the temperature signal and design temperature that compare frequency converter, the aperture of control valve, and then control flow check cooling water flow in frequency converter cooling branch road, make the temperature of frequency converter reach steady state value.
Adopt the water cooled chiller of above-mentioned control method, include condenser, cooling water pump, cooling tower, frequency converter and control device; Described condenser, cooling water pump are connected by circulating line with cooling tower, 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 frequency converter cooling branch road, and described frequency converter cooling branch road 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 described frequency converter cooling branch road; Described frequency converter and condenser adopt mode in parallel to be connected; Described water cooled chiller 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 is connected by signal transmission mechanism with temperature sensing device; Described control device includes:
First detection module, for detecting the first temperature, wherein the first temperature is the temperature of frequency converter during the first moment; Temperature during first moment is that frequency converter is started working the temperature in moment;
First judge module, for receiving the first temperature value, and judges whether the difference of the first temperature and design temperature is greater than setting value;
First control module, for receiving the comparison signal of the first judge module, when the difference of the first temperature and design temperature is greater than setting value, controls the valve open of self force type temperature regulating valve;
Second control module, for receiving the comparison signal of the first judge module, when the difference of the first temperature and design temperature is less than or equal to setting value, controls the valve closing of self force type temperature regulating valve.
Described frequency converter includes radiator, is arranged in frequency converter cabinet body, and described radiator adopts cooling by water formula structure; Described radiator is connected with the water inlet end of condenser and the connecting pipe of water side by frequency converter cooling branch road; Described temperature sensing device is arranged on the surface of spreader surface or frequency converter internal components; Described first detection module is used for the temperature detecting frequency converter in real time.
Beneficial effect of the present invention is as follows:
The control method of water cooled chiller of the present invention, because cooling water pump drives cooling water to flow in frequency converter cooling branch road, cooling water flow is through frequency converter thus cool frequency converter.Frequency converter uses cooling water to cool, and cooling water takes from water chiller condenser, and the water inlet pipe of frequency converter and outlet pipe are plugged into the water inlet end of condenser and the connecting pipe of water side respectively, and frequency converter inner cooling water can drive circulation by cooling water pump.Simultaneously, water cooled chiller 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 control frequency converter, make spreader surface temperature constant and significantly lower than the spreader surface temperature of air cooling system, make the temperature relative constancy of frequency converter radiator, prevent the impact that the overheated damage of device and radiator condensation cause frequency converter, improve the stability of frequency converter work.After application cooling water dispels the heat, effectively can extend the life-span of frequency converter, meanwhile, due to operating temperature can constant in a lower scope (being less than 45 DEG C) components selection capacity can suitably reduce, thus to reduce costs when ensureing stability in use.
Accompanying drawing explanation
Fig. 1 is the syndeton schematic diagram of water cooled chiller of the present invention;
Fig. 2 is the curved line relation schematic diagram of temperature T2 and valve opening in the frequency converter cooling means of water cooled chiller of the present invention.
Fig. 3 is the schematic flow sheet during the first moment of the control method of water cooled chiller of the present invention;
Fig. 4 is the schematic flow sheet entered during the second moment of the control method of water cooled chiller of the present invention;
Fig. 5 is the control device structural representation of water cooled chiller of the present invention;
Fig. 6 is the control device overall structure schematic diagram of water cooled chiller 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, frequency converter cooling branch road, 61, radiator.
Detailed description of the invention
The invention discloses a kind of control method of water cooled chiller, cooling water pump drives cooling water to circulate 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, thus cools condenser; Cooling water pump drives cooling water to flow in frequency converter cooling branch road, and cooling water flow is through frequency converter thus cool frequency converter; Wherein, described frequency converter is provided with temperature sensing device, is provided with self force type temperature regulating valve in frequency converter cooling branch road; The temperature signal of frequency converter is passed to self force type temperature regulating valve by signal transmission mechanism by described temperature sensing device, self force type temperature regulating valve is by the difference of the temperature signal and design temperature that compare frequency converter, the aperture of control valve, and then control flow check cooling water flow in frequency converter cooling branch road, make the temperature of frequency converter reach steady state value.
The temperature signal of described frequency converter is the surface temperature of the radiator of frequency converter or the surface temperature of frequency converter.
The control method of described water cooled chiller, as Fig. 3, the concrete steps comprised during the first moment are as follows:
Step S1: start;
Step S2: detect the first temperature, wherein the first temperature is frequency converter or the temperature of radiator during the first moment, particularly, in the frequency converter course of work, is detected the temperature of frequency converter or radiator in real time by temperature inductor; Temperature during first moment is that frequency converter is started working the temperature in moment;
Step S3: judging whether the difference of the first temperature and design temperature is greater than setting value, then performing step S4 as being greater than setting value, otherwise perform step S5;
Step S4: valve open to the first aperture controlling self force type temperature regulating valve;
Step S5: the valve closing controlling self force type temperature regulating valve;
Step S6: terminate the control process during the first moment.
The setting value of the difference of described first temperature and design temperature is-10 degrees Celsius.
The control method of described water cooled chiller, as Fig. 2,4, the concrete steps also comprised during the second moment are as follows:
Step S7: start;
Step S8: when judging that the difference that described water cooled chiller is in the first temperature and design temperature is greater than-10 degrees Celsius, controls self force type temperature regulating valve and is in the first aperture state, continue to regulate the aperture of self force type temperature regulating valve;
Step S9: be in for the second moment detection time, detects the second temperature of frequency converter and radiator;
Step S10: judge whether the difference of the second temperature and design temperature is greater than-10 degrees Celsius, when the difference of the second temperature and design temperature is less than or equal to-10 degrees Celsius, perform step S12, when the difference of the second temperature and design temperature is greater than-10 degrees Celsius, control self force type temperature regulating valve and remain on the first aperture or control self force type temperature regulating valve increase aperture;
Step S11: control self force type temperature regulating valve and press set model adjustment aperture size;
Step S12: the valve closing controlling self force type temperature regulating valve;
Step S13: terminate.
In above-mentioned steps S10, control self force type temperature regulating valve and keep still increasing aperture, performed by the set model of step S11; Be specially: when the difference of the second temperature and design temperature is greater than-10 degrees Celsius, calculate the difference of the second temperature and design temperature according to equation curve Y=0.00002x
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, X is T2 temperature value; Y is the aperture amount of U self force type temperature regulating valve in figure.
Described design temperature scope: between 55 DEG C ~ 90 DEG C.
As shown in Figure 2, the concrete control logic of the frequency converter cooling means of above-mentioned water cooled chiller is: set temperature sensing device temperature as T1 (unit for DEG C), design temperature is T (unit for DEG C), the difference of design temperature T and temperature sensing device temperature T1 is T2 (unit for DEG C), i.e. T1-T=T2, if the aperture of self force type temperature regulating valve is U (unit is %), by Fig. 2 curve, according to temperature T2, the aperture of valve is regulated.This curve is the thermal balance ensureing the radiator when design temperature T equals inductor temperature T1, and move to-10 DEG C of places by after the intersection point of curve and temperature (T2), ensure that when T2=0 DEG C, the aperture of self force type temperature regulating valve is U is still 20%.Meanwhile, in order to ensure 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 U (unit is %) and the pass of temperature T2 is 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 for detecting the temperature during radiator first moment, and the first judge module is for judging difference T2_1 between the temperature T1_1 that the first moment detected and design temperature T and according to curve approximation equation: Y=0.00002x
2+ 0.03x+0.2 regulating valve aperture.After this, do not change if detected temperatures remains on T1_1 always, then valve opening does not change, if inductor temperature changes, then the second detection module is for detecting the temperature in the second moment, and the second judge module is for judging difference T2_2 between the temperature T1_2 in the second moment and temperature T and according to curve approximation equation: Y=0.00002x
2+ 0.03x+0.2 regulating valve aperture.Circulation like this, ensures the aperture by inductor temperature and the real-time control valve of operation curve.
Adopt the water cooled chiller 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 are connected by circulating line with cooling tower, 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 frequency converter cooling branch road, and described frequency converter cooling branch road 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 described frequency converter cooling branch road; Described frequency converter and condenser adopt mode in parallel to be connected; Described water cooled chiller includes self force type temperature regulating valve and temperature sensing device, and described self force type temperature regulating valve is connected in the frequency converter cooling branch road between frequency converter and the water inlet end of condenser; Temperature sensing device is arranged on frequency converter, and self force type temperature regulating valve is connected by signal transmission mechanism with temperature sensing device; Described control device includes:
First detection module 10, for detecting the first temperature, wherein the first temperature is the temperature of frequency converter during the first moment; Temperature during first moment is that frequency converter is started working the temperature in moment;
First judge module 20, for receiving the first temperature signal, and judges whether the difference of the first temperature and design temperature is greater than setting value;
First control module 30, for receiving the comparison signal of the first judge module 20, when the difference of the first temperature and design temperature is greater than setting value, controls the valve open of self force type temperature regulating valve;
Second control module 40, for receiving the comparison signal of the first judge module 20, when the difference of the first temperature and design temperature is less than or equal to setting value, controls the valve closing of self force type temperature regulating valve.
Described frequency converter includes radiator, is arranged in frequency converter cabinet body, and described radiator adopts cooling by water formula structure; Described radiator is connected by the water inlet end of frequency converter cooling branch road and condenser and 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 for detecting the temperature of frequency converter in real time.
As Fig. 6, described control device also comprises:
Second detection module 50, after being in the first aperture at self force type temperature regulating valve, detects the second temperature, and wherein the second temperature is frequency converter and the radiator temperature in the second moment;
Second judge module 60, for receiving the second temperature signal, judges whether the difference of the second temperature and design temperature is greater than setting value;
First computing module 70, for calculating the difference of the second temperature and design temperature, and calculates valve opening corresponding to this difference;
3rd control module 80, for the aperture according to the self force type temperature regulating valve calculated, regulates self force type temperature regulating valve to be in corresponding aperture.
Specific embodiment:
Ask for an interview Fig. 1, the invention discloses a kind of water cooled chiller, include condenser 3, cooling water pump 2, cooling tower 1 and frequency converter 6; Described condenser 3, cooling water pump 2 are connected by circulating line 4 with cooling tower 1, 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 frequency converter cooling branch road 8, and described frequency converter cooling branch road 8 from the water inlet end branch of condenser, and crosses with the water side of condenser, and frequency converter 6 is connected in described frequency converter cooling branch road.
Described frequency converter 6 and condenser 3 adopt mode in parallel to be connected.
Described water cooled chiller 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 frequency converter cooling branch road 8 between frequency converter 6 and the water inlet end of condenser; Temperature sensing device 7 is arranged on frequency converter 6, and self force type temperature regulating valve 5 is connected by signal transmission mechanism with temperature sensing device 7.
Described frequency converter 6 includes radiator 61, is arranged in frequency converter cabinet body, and described radiator 61 adopts cooling by water formula structure; Described radiator 61 is connected by the water inlet end of frequency converter cooling branch road 8 and condenser and water side; Described temperature sensing device 7 is arranged on the surface of radiator 61 surface 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 flows through the pressure of medium self in valve, temperature 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 of valve output (pressure, pressure reduction, temperature) to be delivered to executing agency by signal pipe and drives flap to change the aperture of valve, reach the object regulating pressure, flow, temperature.Direct-operated regulator is a new control valve kind.Relative to manual modulation valve, its advantage automatically to regulate; Relative to electric control valve, its advantage does not need external impetus.Application practice proves, in closed-loop water system (as hot-water heating system, air conditioning water system), proper use of this valve, can realize the assignment of traffic of system easily; The dynamic equilibrium of system can be realized; Greatly can simplify the debugging efforts of system; The duty etc. of pump can be stablized.
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 uniform, and its control action is proportion adjustment.During controlled medium temperature change, the temperature sensing liquid volume in sensor is along with expansion or shrink.When controlled medium temperature is higher than setting value, temperature sensing liquid expands, and promotes the downward valve-off of spool, reduces the flow of heating agent; When the temperature of controlled medium is lower than setting value, 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, set simple and easy, balance valve core design without the need to power supply source of the gas, adjustment.Self force type temperature regulating valve has wider temperature setting range; show clear, precision is high; and be provided with overload protection arrangement; safe and reliable, be thus widely used in chemical industry, temperature automatic adjustment that oil, electric power, metallurgy, food, light textile, people China Democratic National Construction Association build the equipment such as the various heat supply such as housing-group, hotel, restaurant, water supply, refrigeration, sterilizing.
Water cooled chiller of the present invention and frequency converter cooling means thereof, frequency converter radiator uses cooling water to cool, cooling water takes from water chiller condenser, the water inlet pipe of radiator and outlet pipe are plugged into the water inlet end of condenser and water side respectively, and radiator inner cooling water can drive circulation by cooling water pump.On radiator inleting pipe or outlet pipe, self force type temperature regulating valve is installed simultaneously; temperature sensing device installs the frequency converter device surface dispelled the heat with spreader surface or need; so just or the temperature of the frequency converter device of heat radiation can be needed to regulate the discharge in radiator according to radiator; make radiator or frequency converter device temperature constant; both the too high frequency converter device that causes of temperature can have been avoided to protect; also can avoid that temperature is too low causes condensation, make the open circuit of frequency converter device or damage.Condensation is not produced in order to make spreader surface, design temperature need higher than environment for use temperature, but the too high meeting of design temperature makes radiator overheated thus reduces radiating efficiency, normal environment for use temperature is less than 45 DEG C, the maximum operating temperature of the heat dissipation equipments such as power device is more than 100 DEG C, therefore native system is recommended to adjust between 55 DEG C ~ 90 DEG C by design temperature, so that system well operates.
The invention has the advantages that: 1 does not need electric power or electronic signal to drive and can operate completely, and reliability is high, especially in the occasion that the electromagnetic environments such as frequency converter are comparatively severe, anti-interference adaptable.2 manually can set constant temperature point, realize the constant of radiator operating temperature.
Water cooled chiller of the present invention, transforms frequency converter cooling system, increases respective line device, and is included in main frame water system.
Above-mentioned listed specific implementation is nonrestrictive, and to one skilled in the art, not departing from the scope of the invention, the various modifications and variations of carrying out, all belong to protection scope of the present invention.
Claims (6)
1. the control method of water cooled chiller, cooling water pump drives cooling water to circulate 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, thus cools condenser; Cooling water pump drives cooling water to flow in frequency converter cooling branch road, and cooling water flow is through frequency converter thus cool frequency converter; It is characterized in that: described frequency converter is provided with temperature sensing device, in frequency converter cooling branch road, be provided with self force type temperature regulating valve; The temperature signal of frequency converter is passed to self force type temperature regulating valve by signal transmission mechanism by described temperature sensing device, self force type temperature regulating valve is by the difference of the temperature signal and design temperature that compare frequency converter, the aperture of control valve, and then control flow check cooling water flow in frequency converter cooling branch road, make the temperature of frequency converter reach steady state value; The temperature signal of described frequency converter is the surface temperature of the radiator of frequency converter or the surface temperature of frequency converter;
The control method of described water cooled chiller, the concrete steps comprised during the first moment are as follows:
Step S1: start;
Step S2: detect the first temperature, wherein the first temperature is frequency converter or the temperature of radiator during the first moment, particularly, in the frequency converter course of work, is detected the temperature of frequency converter or radiator in real time by temperature inductor; Temperature during first moment is that frequency converter is started working the temperature in moment;
Step S3: judging whether the difference of the first temperature and design temperature is greater than setting value, then performing step S4 as being greater than setting value, otherwise perform step S5;
Step S4: valve open to the first aperture controlling self force type temperature regulating valve;
Step S5: the valve closing controlling self force type temperature regulating valve;
Step S6: terminate the control process during the first moment;
The control method of described water cooled chiller, the concrete steps comprised during the second moment are as follows:
Step S7: start;
Step S8: when judging that the difference that described water cooled chiller is in the first temperature and design temperature is greater than setting value, controls self force type temperature regulating valve and is in the first aperture state, continue to regulate the aperture of self force type temperature regulating valve;
Step S9: be in for the second moment detection time, detects the second temperature of frequency converter and radiator;
Step S10: judge whether the difference of the second temperature and design temperature is greater than setting value, when the difference of the second temperature and design temperature is less than or equal to setting value, perform step S12, when the difference of the second temperature and design temperature is greater than setting value, control self force type temperature regulating valve and remain on the first aperture or control self force type temperature regulating valve increase aperture;
Step S11: control self force type temperature regulating valve and press set model adjustment aperture size;
Step S12: the valve closing controlling self force type temperature regulating valve;
Step S13: terminate;
In step S10, control self force type temperature regulating valve and keep still increasing aperture, performed by the set model of step S11; Be specially: when the difference of the second temperature and design temperature is greater than setting value, calculate the difference of the second temperature and design temperature according to equation curve Y=0.00002x
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, X is T2 temperature value; Y is the aperture amount of U self force type temperature regulating valve.
2. the control method of water cooled chiller as claimed in claim 1, is characterized in that: the setting value of the difference of described first temperature and design temperature is-10 degrees Celsius.
3. the control method of water cooled chiller as claimed in claim 1 or 2, is characterized in that: described design temperature scope: between 55 DEG C ~ 90 DEG C.
4. adopt the water cooled chiller of control method as claimed in claim 1 or 2, include condenser, cooling water pump, cooling tower, frequency converter and control device; Described condenser, cooling water pump are connected by circulating line with cooling tower, 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 frequency converter cooling branch road, and described frequency converter cooling branch road 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 described frequency converter cooling branch road; Described frequency converter and condenser adopt mode in parallel to be connected; It is characterized in that: described water cooled chiller includes self force type temperature regulating valve and temperature sensing device, 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 is connected by signal transmission mechanism with temperature sensing device; Described control device includes:
First detection module (10), for detecting the first temperature, wherein the first temperature is the temperature of frequency converter during the first moment; Temperature during first moment is that frequency converter is started working the temperature in moment;
First judge module (20), for receiving the first temperature signal, and judges whether the difference of the first temperature and design temperature is greater than setting value;
First control module (30), for receiving the comparison signal of the first judge module (20), when the difference of the first temperature and design temperature is greater than setting value, controls the valve open of self force type temperature regulating valve;
Second control module (40), for receiving the comparison signal of the first judge module (20), when the difference of the first temperature and design temperature is less than or equal to setting value, controls the valve closing of self force type temperature regulating valve.
5. water cooled chiller as claimed in claim 4, is characterized in that: described frequency converter includes radiator, is arranged in frequency converter cabinet body, and described radiator adopts cooling by water formula structure; Described radiator is connected with the water inlet end of condenser and the connecting pipe of water side by frequency converter cooling branch road; Described temperature sensing device is arranged on the surface of spreader surface or frequency converter internal components; Described first detection module (10) is for detecting the temperature of frequency converter in real time.
6. water cooled chiller as claimed in claim 5, is characterized in that: described control device also comprises:
Second detection module (50), after being in the first aperture at self force type temperature regulating valve, detects the second temperature, and wherein the second temperature is frequency converter and the radiator temperature in the second moment;
Second judge module (60), for receiving the second temperature signal, judges whether the difference of the second temperature and design temperature is greater than setting value;
First computing module (70), for calculating the difference of the second temperature and design temperature, and calculates valve opening corresponding to this difference;
3rd control module (80), for the aperture according to the self force type temperature regulating valve calculated, regulates self force type temperature regulating valve to be in corresponding aperture.
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| CN201110380243.9A CN103134145B (en) | 2011-11-24 | 2011-11-24 | The control method of water cooled chiller and water cooled chiller |
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| WO2018032314A1 (en) * | 2016-08-16 | 2018-02-22 | 陈玮彤 | Computer chassis |
| 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 |
| 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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| CN2645333Y (en) * | 2003-08-19 | 2004-09-29 | 焦作华飞电子电器工业有限公司 | Mining explosion-proof frequency conversion electric controller |
| CN201242389Y (en) * | 2008-07-17 | 2009-05-20 | 上海信业计算机网络工程有限公司 | Apparatus for precooling water coolant using fountain water |
| DE102009024370A1 (en) * | 2009-06-09 | 2010-12-16 | Semikron Elektronik Gmbh & Co. Kg | Converter arrangement with cooling device and manufacturing method for this purpose |
| CN201898430U (en) * | 2010-11-11 | 2011-07-13 | 董云志 | Water-cooled high-frequency switching power source |
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