CN101907199B - Magnetic-driven intelligent radiator thermostat valve gear - Google Patents

Abstract

The invention relates to a magnetically driven intelligent radiator temperature control valve device, which is divided into two parts: a valve body and a control box. The control box includes a single-chip microcomputer and a control panel. The single-chip microcomputer can not only receive the signal transmitted by the remote control through the infrared remote control receiving module set on it, but also receive the signal manually input on the control panel. The control coil is powered on and off, and the magnetic column is driven by the coil. And drive the spool to move, changing the valve opening. On the inner wall of the valve, there is a water leakage groove, which communicates with the water inlet pipe of the valve body through the pipeline in the wall to prevent the vacuum of the valve chamber. The single chip microcomputer is respectively connected with the control panel, the room temperature sensor and the water temperature sensor. The beneficial effects of the present invention are: the use of magnetic drive reduces costs; the use of no temperature bulb prevents pollution caused by leakage of the temperature bulb; no mechanical wear and long service life; the combined control of single-chip microcomputer, temperature sensor and current amplification circuit is adopted, and the control accuracy is high. Quick response; good human-computer interaction performance, which can be operated through the control panel and remote control.

Description

A magnetically driven intelligent radiator temperature control valve device

technical field

The invention relates to an intelligent radiator temperature control valve device, in particular to an intelligent radiator temperature control valve device driven by magnetic force.

Background technique

The temperature control valve, also known as the radiator thermostat controller, is composed of a thermostat controller, a flow regulating valve and a pair of connectors. The core component of the thermostat controller is the sensor unit, that is, the temperature package. The temperature bulb can sense the change of the ambient temperature to produce a volume change, which drives the adjustment valve core to move, and then adjusts the water intake of the radiator to change the heat dissipation of the radiator.

The temperature control valve is installed on the heating radiator of residential and public buildings, usually in front of the radiator. The temperature control valve can set the room temperature according to the different requirements of the user. Its temperature-sensing part continuously senses the room temperature and automatically adjusts the heat supply at any time according to the current heat demand, so as to prevent the room temperature from overheating and enable the user to obtain the highest comfort.

The temperature control valve can effectively save energy and reduce the user's heating costs. The heating system is designed and calculated based on the maximum heat load required at the statistically minimum outdoor temperature, but this design temperature only occurs for a few days in the severe cold season, which means that the heating system is at full capacity only for these few days in the entire heating season. load operation. Generally speaking, the heat load required to ensure room temperature is much smaller than the design value, and the heat load is constantly changing. The temperature control valve can automatically maintain the accurate room temperature according to the predetermined requirements, regardless of the weather conditions. Installing a temperature control valve in each room can make full use of the "free" heat emitted by sunlight, lighting facilities, machinery and human body to achieve energy saving effect. However, due to the technical and price problems of temperature control valves, only a very small number of users have installed household temperature control valves. As a result, most users who installed household heat energy meters cannot automatically adjust the room temperature. When the indoor temperature is too high, users When it cannot be adjusted independently, it has to open the window to adjust the indoor temperature. According to investigations, this part of waste accounts for about 15% of the total heat.

Refer to the self-operated temperature control valve published by the application number 200610137873.2. Most of the existing radiator temperature control valves use the volume change generated by the temperature sensing package to control the opening of the valve, which has poor human-computer interaction and can The controlled temperature range is limited and the control accuracy is low. At the same time, the actuators of most temperature control valves are relatively complicated, and there are fewer temperature control valves embedded with single-chip microcomputer control units. In addition, there are a series of problems such as high manufacturing cost, serious mechanical wear, and easy rupture of the temperature sensing package to cause pollution. In view of these problems, it is of great practical significance to develop an intelligent temperature control valve with simple structure, reliable performance, long service life and good human-computer interaction.

Contents of the invention

The object of the present invention is to provide a non-mechanical wear temperature control valve embedded with a single-chip microcomputer control unit and driven by magnetic force. temperature control.

The technical scheme of the present invention is as follows. A magnetically driven intelligent radiator temperature control valve device includes a valve body, a control box, a drive unit, an execution unit, a sealing component, and a temperature sensing component, and is characterized in that:

The control box is composed of a single-chip microcomputer, a control panel, a room temperature sensor, a power connector, and electric wires. The MCU has two ways to receive signals, one is through the infrared remote control receiving module set on it, which can receive the command signal emitted by the infrared remote control to achieve the corresponding operation; the other is through the pin connected to the MCU The buttons on the control panel are manually operated to realize the corresponding functions.

The driving unit is composed of a coil sleeve, a coil wound on the coil sleeve and a magnetic column that can be inserted into the coil sleeve. The magnetic column can be inserted into the coil sleeve and can move up and down, and the magnetic pole at the end of the magnetic column close to the coil is different from the magnetic pole generated at the lower end of the coil after electrification.

The lower end of the magnetic column is provided with an external thread, and the upper end of the valve core is provided with a threaded hole, and the two are connected by threads. The spool and the return spring sleeved outside the spool constitute the execution unit.

When the coil is not energized, the valve is in the closed state. When the coil is energized, the lower end of the coil generates a magnetic pole with a polarity different from that of the upper end of the magnetic column, which generates an upward attraction force on the magnetic column, causing the magnetic column to move upward, thereby driving the valve core. Overcome its own gravity and the restoring force of the return spring to move upwards to open the valve.

The upper end of the return spring rests on the lower surface of the coil sleeve, while the lower end of the return spring rests on the valve core. When the current flowing into the coil gradually decreases, the return spring will move the valve core down through its deformation, reducing the valve opening. . The size of the valve opening is related to the size of the current passing through the coil.

On the inner wall of the valve seat, higher than the upper part of the valve core sealing ring sleeved on the upper end of the valve core, there is a water leakage groove with a height of 1cm-2cm, which communicates with the water inlet pipe of the valve seat through the pipeline in the wall. Such a setting can connect the valve cavity at the upper end of the valve core and the water inlet, so as to balance the water pressure at the two places. The purpose is to prevent a vacuum area between the valve core and the valve cavity after multiple opening and closing operations, which will affect the valve. Normal work and control accuracy.

The temperature sensing component is composed of a room temperature sensor installed in the control box and a water temperature sensor installed in a small hole on the wall of the water inlet pipe, and both of them are connected with the single-chip microcomputer. The temperature sensing part of the water temperature sensor enters the water.

The beneficial effects of the present invention are: the use of magnetic drive reduces energy consumption and cost; avoids the use of temperature bulbs and prevents pollution caused by leakage of temperature bulbs; the actuator is driven by magnetic force without mechanical wear and has a long service life; The combination of coil, magnetic column, and temperature sensor has high control precision and fast response; the human-computer interaction performance is good, and it can be controlled through the control panel or remote control.

Description of drawings

Fig. 1 is a sectional view of the internal structure of a valve body 1 of the present invention;

Fig. 2 is a schematic diagram of the external structure of the valve body 1 of the present invention;

Fig. 3 is a three-dimensional schematic view of the control box 2 of the present invention;

Fig. 4 is a schematic diagram of the internal connections of the control box 2 of the present invention;

Fig. 5 is a control principle block diagram of the present invention;

specific embodiment

The present invention will be further described below in conjunction with drawings and embodiments.

The present invention is a magnetically driven intelligent radiator temperature control valve device, which includes a valve body 1 , a control box 2 , a drive unit 3 , an execution unit 4 , a sealing component 5 and a temperature sensing component 6 .

The valve body 1 is divided into a valve cover 101 and a valve seat 102 . The valve seat 102 is provided with a water inlet pipe 1021 and a water outlet pipe 1022, and the valve cavity 1023 is located between the two.

The assembly method of the present invention is as follows: first screw the threaded part at the lower end of the magnetic column 303 into the threaded hole at the upper end of the valve core 402, and then put the valve core 402 into the valve cavity. Set the valve core sealing ring 501 on the outside of the magnetic column 303 , and then set the return spring 401 on the outside of the magnetic column 303 . The coil is wound on the coil sleeve 301, and the two ends of the coil pass through the wire hole 1011 opened on the top of the valve cover 101, pass through the wiring hole 2031 of the control box 2, and are connected to the single chip microcomputer 201. Then screw the thread on the top of the coil sleeve 301 into the threaded hole 1011 on the valve cover 101 to fix it. Finally, cover the valve cover 101 on the valve seat 102, and tighten the four bolts 103 respectively. In addition, depending on the accuracy of the parts, it may be necessary to set some other sealing rings.

The length of the magnetic column 303 is designed such that after the valve cover 101 is closed after it is fully assembled, the upper end surface of the magnetic column 303 is just flush with the lower end surface of the coil 302, and the magnetic column 303 is located on the positive side of the coil sleeve 301. Below, the matching relationship between the two is concentric circles.

In order to prevent a vacuum area between the valve core 402 and the valve cavity 1023 after multiple opening and closing operations, the valve core is stuck and affects the normal operation and control accuracy of the valve. In the present invention, the inner wall of the valve seat 102 is higher than the position of the valve core sealing ring 501 sleeved on the valve core 402, and a square water leakage hole 1024 with a height of 1 cm is opened, which is connected to the water inlet pipe of the valve body through the pipeline 1025 in the wall. 1021 connected.

The single-chip microcomputer 201 and the room temperature sensor 601 are both connected by wires and installed inside the control box 2 . The room temperature sensor 601 can use a thermistor to measure the real-time room temperature and transmit it to the microcontroller 201 . The control panel 202 is also connected with the single chip microcomputer 201 through a line, and as the box cover of the control box 2, it can be manually operated.

The water temperature sensor 602 may use a thermocouple. The water temperature sensor 602 with an external thread is inserted into the temperature measuring hole 1026 provided on the wall of the water inlet pipe 1021, and immersed in water. The temperature measuring hole 1026 is provided with an internal thread, and the two are connected by threads. The circuit at the upper end of the water temperature sensor 602 stays outside the hole and is connected to the corresponding pin of the single-chip microcomputer 201 in the control box 2 to measure the real-time water temperature and transmit it to the single-chip microcomputer 201.

One side of the control box 2 is provided with a wiring hole 2031 through which the wires connected to the coil 302 are connected to the single-chip microcomputer 201 . The other side of the control box 2 is also provided with a DC power interface 2032 .

When the coil 302 is not energized, the valve is in the closed state. When the coil 302 is energized, the coil 302 generates a magnetic pole with a polarity different from that of the upper end of the magnetic column 303, which generates an upward attractive force on the magnetic column 303, so that the magnetic column 303 carries the valve. Core 402 moves up, opening the valve.

The control panel 202 includes an LCD display 2021 , a mode button 2022 , a cooling button 2023 , a heating button 2024 , a buzzer hole 2025 , a power indicator 2026 , an automatic mode indicator 2027 , and an antifreeze mode indicator 2028 . Through the infrared remote control receiving module arranged on the single chip microcomputer 201, the present invention can also receive and execute the signal transmitted by the remote control. The data line of the control panel 202 is connected with the single-chip microcomputer 201, if the temperature is set without using the infrared remote controller, it can also be set manually through the control panel 202. Among them, the LCD display 2021 displays the current working mode, set temperature, and current room temperature, and the buzzer in the buzzer hole 2025 makes a short beep every time the setting is successful.

The invention starts with the control method and the driving principle, and simplifies the internal structure of the valve body. The input parameters of the single-chip microcomputer control unit include: the temperature value measured by the room temperature sensor 601, the temperature value measured by the water temperature sensor 602 and the temperature value set by the user. According to the characteristic curve of the return spring 401, the displacement of the spool 402, the magnitude of the current in the coil 302, and the energization time, the single-chip microcomputer 201 changes the output voltage of the DAC (digital-to-analog converter) module according to different input parameters, and through the current amplification circuit, Change the magnitude of the current flowing through the coil 302, and then drive the magnetic column 303 to move, and finally change the flow rate of the temperature control valve to achieve the purpose of controlling the room temperature. The characteristic curves of the displacement of the return spring 401 and the spool 402 and the magnitude of the current in the coil 302 and the energization time need to be obtained through multiple experiments and tests according to the specific size and material of the parts.

Claims (5)

1. A magnetically driven intelligent radiator temperature control valve device, including a valve body (1), a control box (2), a drive unit (3), an execution unit (4), a sealing assembly (5), a temperature sensing assembly ( 6), characterized in that: the drive unit (3) consists of a coil sleeve (301), a coil (302) wound on the coil sleeve (301), and a magnetic post (303) that can be inserted into the coil sleeve (301) ) composition; the magnetic column (303) can be inserted into the coil sleeve (301), and can move up and down; The spring (401) constitutes the execution unit (4); the upper end of the spool (402) is fixedly connected with the lower end of the magnetic column (303); the control box (2) includes a single-chip microcomputer (201) and a control panel (202) ; The single-chip microcomputer (201) can receive the signal transmitted by the infrared remote controller through the infrared remote control receiving module arranged on it, and be connected with the control panel (202); when the coil (302) is energized, the coil (302) Generate a magnetic pole with a polarity different from that of the upper end of the magnetic column (303), and generate an upward attractive force on the magnetic column (303), so that the valve core (402) moves upward, and the valve opens; the single-chip microcomputer (201) changes the flow through the coil (302 ) to drive the magnetic column (303) to move, and then change the flow rate of the temperature control valve; when the coil (302) is not energized, the spool (402) moves down under the action of the return spring (401), and the valve is closed; On the inner wall of the valve seat (102), higher than the upper part of the valve core sealing ring (501) sleeved on the upper end of the valve core (402), there is a water leakage groove (1024) with a height of 1cm-2cm, which passes through the pipeline in the wall. (1025) communicates with the water inlet pipe (1021) of the valve body; the temperature sensing assembly (6) is composed of a room temperature sensor (601) installed in the control box (2) and a water temperature sensor (602) installed in the water inlet, And the output lines of the two are all connected with the single-chip microcomputer (201); the water temperature sensor (602) is installed in the temperature measuring hole (1026) of the valve body by threaded connection; the top of the bonnet (101) at the valve body upper end has a threaded hole (1012), the coil sleeve (301) is fixed on the valve cover (101) by the external thread at the top. the 2. A magnetically driven intelligent radiator temperature control valve device according to claim 1, characterized in that: the control box (2) and the valve body (1) are separate structures, and its wires pass through the valve body The wire hole (1011) on the upper end of the cover (101) is connected with the coil (302). 3 . The magnetically driven intelligent radiator temperature control valve device according to claim 1 , characterized in that: the valve body ( 1 ) is connected to the valve cover ( 101 ) through bolts ( 105 ). 4. A magnetically driven intelligent radiator temperature control valve device according to claim 1, characterized in that: the upper end of the return spring (401) bears on the lower surface of the coil sleeve (301), and the return spring (401) lower end supports on the spool (402). 5. A magnetically driven intelligent radiator temperature control valve device according to claim 1, characterized in that: the control panel (202) is set as the cover of the control box (2), and is the same as the infrared remote control All are provided with control button groups. the

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