CN103216659B - Temperature adjusting device with valve self-adaptive function - Google Patents

Abstract

The invention relates to the field of centralized heating, in particular to a temperature adjusting device with a valve self-adaptive function. The temperature adjusting device with the valve self-adaptive function comprises a temperature sampling unit, a temperature control unit, a valve self-adaptive unit, a motor drive unit and a controller unit, wherein the controller unit is respectively connected to the temperature sampling unit, the temperature control unit, the valve self-adaptive unit and the motor drive unit, the temperature control unit is respectively connected to the temperature sampling unit and the valve self-adaptive unit, and the motor drive unit is respectively connected to the valve self-adaptive unit and a valve. In comparison with the prior art, the opening degree of the valve can be precisely adjusted through the temperature adjusting device provided by the invention, so that the room temperature is accurately adjusted without frequent opening and closing actions, thus energy is saved.

Description

A temperature regulating device with valve self-adaptive function

technical field

The invention relates to the field of central heating, in particular to a temperature regulating device with a valve self-adaptive function.

Background technique

Central heating, as the most economical heating mode for winter heating in the north, has achieved rapid development in recent years, and the proportion of central heating has increased year by year. The research and development of energy-saving and efficiency-enhancing technologies in the central heating industry is conducive to the national energy-saving and emission-reduction work. At present, most domestic heating households do not have indoor temperature adjustment devices, and there is no way to actively adjust the temperature when the indoor temperature is high or when there is no one in the room, resulting in huge energy waste.

The existing automatic room temperature adjustment technical solutions in the industry fall into the following three categories.

The first category is to adopt the room temperature adjustment technology in the central air-conditioning system. This technology installs electric actuators and two-way valves on the fan coil units in each room, and is equipped with a thermostat. The thermostat detects the room temperature and performs temperature control calculations. According to the calculation results, the electric actuators are fully opened. Or fully close the two-way valve. In this technology, since the valve state is only fully open and fully closed, in order to accurately adjust the room temperature, it is often necessary to open and close more frequently, which will waste energy.

The second category is the use of thermostatic valve technology. This technology uses temperature bulb sensing to automatically close the valve when the room temperature is too high, and increase the valve when the room temperature is too low, thereby adjusting the room temperature. This technology adjusts the room temperature slowly, and the accuracy is not high, and there is no display unit, so the user cannot know the current actual room temperature and the current opening of the valve.

The third category is the use of electrothermal actuator adjustment technology. This technology requires an external controller to be connected to the electrothermal actuator, and the controller controls the electrothermal actuator to increase the valve when the room temperature is too low, and close the valve when the room temperature is too high. Since the electrothermal actuator adjusts the valve opening through the principle of heat expansion and contraction, the valve adjustment time is relatively long, and the room temperature adjustment is very slow. Moreover, an external controller is required, and wiring is required for installation and construction, which makes installation more troublesome.

Contents of the invention

The purpose of the present invention is to provide a temperature adjustment device with valve self-adaptive function to solve the problem in the prior art by installing an electric actuator and a two-way valve on the fan coil of the central air-conditioning system, and matching a temperature controller to adjust the temperature. At room temperature, since the valve has only two states of fully open and fully closed, in order to accurately adjust the room temperature, it is often necessary to open and close more frequently, which will waste energy as a technical problem.

The object of the invention is achieved through the following technical solutions:

A temperature regulating device with a valve self-adaptive function, comprising a temperature sampling unit, a temperature control unit, a valve self-adaptive unit, a motor drive unit and a controller unit, the controller unit is connected to the temperature sampling unit, the temperature control unit, the valve adaptive unit, and the motor drive unit, the temperature control unit is respectively connected to the temperature sampling unit, and the valve adaptive unit, and the motor drive unit is respectively connected to the valve adaptive unit, valve connection; where,

The temperature sampling unit is used to collect indoor temperature;

The temperature control unit is used to calculate the current valve opening output value of 0% to 100%;

The valve adaptive unit is used to automatically match the valve;

The motor drive unit is used to drive the valve to change the opening of the valve;

The controller unit is used for setting temperature.

Preferably, the controller unit includes a CPU and an input module, and the input module is connected to the CPU.

Preferably, the temperature sampling unit includes a temperature sensor, and the temperature sensor is connected to the CPU.

Preferably, the temperature control unit includes a comparison module and a calculation module, and the CPU is connected to the comparison module and the calculation module respectively.

Preferably, the valve self-adaptive unit includes a valve total stroke detection module, a motor absolute rotation calculation module, a motor relative rotation calculation module and a motor rotation feedback module, and the CPU is respectively connected with the valve total stroke detection module, the motor absolute rotation The number calculation module, the motor relative rotation number calculation module and the motor rotation number feedback module are connected.

Preferably, the motor rotation number feedback module includes a first photoelectric sensor.

Preferably, the valve adaptive unit further includes a current valve opening feedback module, and the CPU is connected to the current valve opening feedback module.

Preferably, the motor drive unit includes a DC motor drive circuit module, a reduction gearbox, a valve plunger and a valve position detection circuit module, the CPU is connected to the DC motor drive circuit module and the valve position detection circuit module respectively, and the deceleration The gear box is respectively connected with the DC motor drive circuit module, the valve ejector rod and the valve position detection circuit module.

Preferably, the valve position detection circuit module includes the first photoelectric sensor.

Preferably, the input module includes several keys.

Preferably, the controller unit further includes an output module connected to the CPU, and the output module includes a display device.

Compared with the prior art, the present invention has the following advantages:

1. The temperature adjustment device of the present invention can precisely adjust the opening of the valve to accurately adjust the room temperature without frequent opening and closing actions, thereby saving energy;

2. The temperature adjusting device of the present invention can adjust the opening of the valve according to the room temperature in real time, with fast adjustment speed and high accuracy, and can display the current actual room temperature and the current opening of the valve at the same time;

3. The temperature regulating device of the present invention can automatically match many different valves, and is easy to install and use, and has a wide range of applications.

Description of drawings

Fig. 1 is the schematic diagram of the principle of the temperature regulating device of the present invention;

FIG. 2 is a schematic diagram of the principle of the motor drive unit of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

Please refer to Fig. 1, the temperature regulating device with valve self-adaptive function of the present invention comprises temperature sampling unit 2, temperature control unit 3, valve self-adaptive unit 4, motor drive unit 5 and controller unit 1, and controller unit 1 is respectively It is connected with temperature sampling unit 2, temperature control unit 3, valve self-adaptive unit 4 and motor drive unit 5, temperature control unit 3 is connected with temperature sampling unit 2 and valve self-adaptive unit 4 respectively, and motor drive unit 5 is respectively connected with valve self-adaptive unit Unit 4 and valve 6 are connected; among them, the temperature sampling unit 2 is used to collect the indoor temperature; the temperature control unit 3 is used to calculate the current valve opening output value from 0 to 100%; the valve self-adaptive unit 4 is used to automatically Matching valve; motor drive unit 5, used to drive the valve to change the opening of the valve; controller unit 1, used to set the temperature.

The temperature regulating device of the invention integrates automatic valve control, temperature sampling and liquid crystal display unit. It can detect the room temperature and automatically adjust the water supply flow, thereby adjusting the room temperature, which can effectively save the heat used for heating. And it has the function of valve self-adaptation, which can automatically match a variety of different valves, and has a wide range of applications.

The controller unit includes a CPU11, an input module and an output module, and the CPU is connected to the input module and the output module respectively. In this example, the input module includes several keys, and the output module includes a display device. The buttons allow the user to set the temperature or select a preset working mode. The operation interface adopts the button operation mode, and this embodiment provides a button for each working mode, and provides a button for adjusting the temperature setting value up and down. The user can switch the current working mode with one key through the mode button, or change the current temperature setting value through the temperature setting value up and down adjustment buttons. It can provide multi-time timing temperature setting function. The temperature control module automatically controls the heat dissipation and adjusts the room temperature according to the temperature setting value in each time period. The display device adopts liquid crystal display, and other display methods such as LED display and digital tube display can also be used. The liquid crystal display interface can display the current temperature setting value, current temperature, current working mode, current time, current valve opening and other information.

The temperature sampling unit includes a temperature sensor, a temperature sensor and a CPU connection. The temperature sampling unit collects room temperature through a temperature sensor. In this embodiment, a thermistor is used as a temperature sensor, and other temperature collection methods can also be used, such as thermal resistors, temperature chips, etc. to collect temperature. The CPU periodically collects the temperature sensor signal, and after temperature filtering and temperature compensation, an appropriate current temperature value is obtained, which is used as the input of the temperature control unit.

The temperature control unit includes a comparison module and a calculation module, and the CPU is connected to the comparison module and the calculation module respectively. The temperature control unit receives the current temperature value input by the temperature sampling unit, compares the set temperature setting value with the comparison module, and executes a specific temperature control algorithm, such as the PID algorithm, through the calculation module to obtain the current valve opening output of 0 to 100% value. The temperature control unit calculates once at intervals, such as 1 minute, so that this embodiment can output the valve opening in real time according to room temperature changes.

The valve self-adaptive unit includes a valve total stroke detection module, a motor absolute revolution calculation module, a motor relative revolution calculation module and a motor revolution feedback module, and the CPU is connected with the valve total stroke detection module, the motor absolute revolution calculation module, and the motor relative revolution respectively. The number calculation module is connected with the motor revolution number feedback module. Every once in a while, such as one week, the CPU performs a valve total stroke detection through the valve total stroke detection module. The accumulative revolutions of the motor is the total stroke revolutions of the valve. After the current valve opening of 0-100% output by the temperature control unit is input into the valve adaptive unit, the received valve opening is multiplied by the total valve stroke rotation through the motor absolute rotation number calculation module, and the absolute rotation number of the motor is obtained by linear conversion. , and then compare the absolute rotation number with the current motor rotation number to obtain the relative rotation number through the motor relative rotation number calculation module, and output the obtained value to the motor drive unit. The current motor speed is obtained by the motor speed feedback module through photoelectric detection. The motor rotation number feedback module includes a first photoelectric sensor. Through the valve adaptive unit, the length of various valves can be automatically detected, so that various valves can be automatically controlled.

The valve adaptive unit also includes a current valve opening feedback module, and the CPU is connected to the current valve opening feedback module. The current valve opening can be obtained through the current valve opening feedback module.

Referring to Fig. 2, the motor drive unit includes a DC motor drive circuit module 51, a reduction gear box 52, a valve push rod 53 and a valve position detection circuit module 54, and the CPU 11 is connected to the DC motor drive circuit module 51 and the valve position detection circuit module 54 respectively , the reduction gear box 52 is respectively connected with the DC motor drive circuit module 51, the valve mandrel 53, and the valve position detection circuit module 54. The valve self-adaptive unit outputs the valve opening electrical signal to CPU11, and CPU11 converts the electrical signal into a motor driving signal through the DC motor drive circuit module 51, drives the motor to rotate, and then drives the reduction gear box 52 to rotate, and then drives the valve ejector rod 53 up and down Moving, the valve push rod 53 is in close contact with the valve stem, so the change in the position of the valve push rod will directly change the position of the valve stem, thereby changing the valve opening. The valve position detection circuit module 54 adopts the above-mentioned first photoelectric sensor, and the first photoelectric sensor obtains the valve opening by detecting the number of turns of the gear rotation in the reduction gear box, and transmits the detected signal to the CPU11, and then transmits the detected signal to the CPU11. A valve total stroke detection module and a current valve opening feedback module for the valve adaptive unit.

When in use, the temperature adjusting device of the present invention is connected to the valve on the pipeline, and the temperature adjusting device changes the flow of hot water in the pipeline by changing the opening of the valve to adjust the heat supply and then adjust the room temperature. Specifically, the temperature is first set through the buttons, and the CPU periodically collects the temperature sensor signal, and after temperature filtering and temperature compensation, the appropriate current temperature value is obtained, and the temperature value is used as the input of the temperature control unit. The temperature control unit compares and calculates the input temperature value through the comparison module and the calculation module, and obtains the current valve opening output value of 0-100% and inputs it into the valve adaptive unit. After the valve adaptive unit calculates the current valve opening of 0-100% output by the temperature control unit, the obtained value is output to the motor drive unit. The motor drive unit drives the motor to rotate, and then drives the reduction gear box to rotate, and then drives the valve plunger to move up and down. The valve plunger is in close contact with the valve stem, so the change in the position of the valve plunger will directly change the position of the valve stem, thereby changing the valve opening.

The opening degree of the valve can be precisely adjusted through the temperature adjusting device of the present invention to accurately adjust the room temperature without frequent opening and closing actions, thereby saving energy. The temperature adjusting device of the present invention can adjust the opening degree of the valve according to the room temperature in real time, has fast adjustment speed and high accuracy, and can display the current actual room temperature and the current opening degree of the valve at the same time.

The above disclosures are only a few specific embodiments of the present application, but the present application is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present application.

Claims (9)

1. A temperature regulating device with valve self-adaptive function, characterized in that it comprises a temperature sampling unit, a temperature control unit, a valve self-adaptive unit, a motor drive unit and a controller unit, and the controller unit is respectively connected to the temperature The sampling unit, the temperature control unit, the valve adaptive unit, and the motor drive unit are connected, the temperature control unit is respectively connected with the temperature sampling unit, and the valve adaptive unit, and the motor drive unit is respectively Connected with the valve adaptive unit and the valve; wherein, The controller unit is used to set the temperature; the controller unit includes a CPU and an input module, and the input module is connected to the CPU; The temperature sampling unit is used to collect indoor temperature; The temperature control unit is used to calculate the current valve opening output value of 0% to 100%; The valve adaptive unit is used to automatically match the valve; the valve adaptive unit includes a valve total stroke detection module, a motor absolute revolution calculation module, a motor relative revolution calculation module and a motor revolution feedback module, and the CPU respectively It is connected with the valve total stroke detection module, the motor absolute revolution calculation module, the motor relative revolution calculation module and the motor revolution feedback module; The motor drive unit is used to drive the valve to change the opening degree of the valve. 2 . The temperature regulating device with valve self-adaptive function according to claim 1 , wherein the temperature sampling unit includes a temperature sensor, and the temperature sensor is connected to the CPU. 3 . 3. The temperature regulating device with valve self-adaptive function as claimed in claim 1, wherein the temperature control unit includes a comparison module and a calculation module, and the CPU is connected with the comparison module and the calculation module respectively . 4. The temperature regulating device with valve self-adaptive function according to claim 1, characterized in that, the motor rotation speed feedback module comprises a first photoelectric sensor. 5. The temperature regulating device with valve self-adaptive function as claimed in claim 4, wherein the valve self-adaptive unit also includes a current valve opening feedback module, and the CPU and the current valve opening feedback module connect. 6. The temperature regulating device with valve self-adaptive function as claimed in claim 5, wherein the motor drive unit comprises a DC motor drive circuit module, a reduction gear box, a valve ejector rod and a valve position detection circuit module, the The CPU is respectively connected with the DC motor drive circuit module and the valve position detection circuit module, and the reduction gear box is respectively connected with the DC motor drive circuit module, the valve ejector rod and the valve position detection circuit module. 7. The temperature regulating device with valve self-adaptive function according to claim 6, characterized in that, the valve position detection circuit module comprises the first photoelectric sensor. 8. The temperature regulating device with valve self-adaptive function according to claim 1, wherein the input module includes several keys. 9. The temperature regulating device with valve self-adaptive function as claimed in claim 1, wherein the controller unit also includes an output module, the output module is connected to the CPU, and the output module includes a display device .