CN2149588Y

CN2149588Y - Automatic control device for water heater

Info

Publication number: CN2149588Y
Application number: CN 93201211
Authority: CN
Inventors: 温照烈
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-03
Filing date: 1993-02-03
Publication date: 1993-12-15
Anticipated expiration: 2003-02-03

Abstract

The utility model relates to an automatic control device for water heater which is designed for convenient temperature-control and can be directly assembled in the existing water heater. The automatic control device for water heater comprises a micro computer central processing unit, a high-pressure arrangement for ignition coupling of signal with the micro computer central processing unit, a temperature probe and a micro-motion valve gate. The valve gate is arranged between a water inlet pipe and a gas inlet pipe. The processing unit adjusts the switching degree of the micro-motion valve gate at any time to achieve automatic temperature-control according to the water temperature of in and effluent water and the predetermined water temperature which are measured by the temperature probe. The micro-motion valve gate is composed of a power case, a drive screw, a valve plug, a push rod and a fore and after micro-motion switch. The power case is plugged in the cross base to make lateral movement movably through the drive screw.

Description

Automatic control device for water heater

The utility model relates to a kind of water heater, relates to the water temperature control device of water heater or rather.

The operation principle of water heater is that coal gas (natural gas) is directly caused burner, reverse ignition switch and light female fire, again switch is adjusted to the position of suitable fire amount, after opening the hot water tap, can enter the burner converter nose in a steady stream because of hydraulic pressure makes coal gas, light the burner heating water tank, by the outlet pipe hot-water supply.This habitual water heater, it is outside the hot water outlet pipe of water heater that water temperature is regulated, need installing cold water pipe in addition, the mode of utilization adjustment cold water water yield reaches to regulate uses coolant-temperature gage, and this regulative mode not only can be scalded the user because of hot water is overheated, simultaneously, the hot water or cold water regulates and to differ, the adjustment period between cause a large amount of water wastes, and because of hot and cold water pipe must be installed simultaneously, take up room and increase engineering cost etc. and cause, therefore traditional water heater must improve design.

Have a kind of comparatively novel gas water heater to come out at present, can correct above-mentioned shortcoming, this gas water heater comprises computer controller 1a as shown in Figure 1, water temperature blending bin 2a, heating tube 3a, heating tank 4a, boiler tube 5a, basic fire tube 6a and shell 7a.Wherein, at hot water or cold water's water inlet place of water temperature blending bin 2a, cold water water inlet and heating tube 3a end, gas pipe porch and gas pipe inlet are provided with solenoid electric valve 8a with basic fire tube 6a place, to control the supply of water source and coal gas respectively.

Above-mentioned solenoid electric valve 8a all is subjected to the control of computer controller 1a, water temperature blending bin 2a is set up in water heater inside, the hot water or cold water imports respectively and mixes in case, the appropriate position of water temperature blending bin 2a delivery port and heating tube 3a is provided with temperature sensor 9a, the water temperature of perception is conducted to computer controller 1a, open and close to control each solenoid electric valve 8a.

The water heater of above-mentioned improvement design, though improved habitual water heater safety with practical aspect deficiency, by computer control water temperature and hot water or cold water's switching, reach make things convenient for, practical purpose.But because at inner expensive solenoid electric valve 8a and the temperature sensor 9a of having used of water heater morely, simultaneously for cooperating each member to install, also need water heater inside is reequiped, as dispose water temperature blending bin etc., the whole cost of water heater is increased, reduced the market competitiveness of water heater, its result also can't cause the another shortcoming of product for masses use.

Secondly, the water heater of above-mentioned improvement design, each solenoid electric valve 8a only makes the two-part action that opens or closes when signal is imported, thereby when control magnetic valve 8a opens and closes again, base fire tube 6a needs igniting again to ignite and makes the signal connection, cause the isolating high-pressure ignitor transformer life short, damage easily.

The purpose of this utility model is under the prerequisite that does not change habitual water heater internal structure, adopt practicality, economic modular construction and existing water heater directly to assemble, except that have improve that the hot and cold control of water heater in the past is difficult for and the situation of easily causing danger, also have the characteristics that reduce cost, enhance product performance.

Water heater temperature's automaton of the present utility model, comprise the micro computer CPU, be located at water heater burner place, the high-voltage ignition device that has signal to be connected with the micro computer CPU, be located at water heater heating water tank hot water outlet pipe and cold water inlet place, the two temperatures detector that has signal to be connected with the micro computer CPU, be located at water heater cold water water inlet pipe and gas inlet pipe place respectively, be subjected to two micro valves of micro computer central processing unit controls control valve position, it is characterized in that: described micro valve is by headstock, drive screw, valve plug, push rod and before, back microswitch is formed, described drive screw swivel nut is in valve plug, be located at the air inlet that is cross in the valve plug, in the water inlet base, the vertical connector of described push rod is on valve plug, push rod top has in concave shaped socket and the base rail plate chimeric, the push rod bottom can touch when directed mobile with valve plug place in the micro valve before, back microswitch.

The utility model is under the prerequisite that does not change former water heater internal structure, micro valve by the micro computer central processing unit controls is installed respectively at water heater gas inlet pipe and cold water inlet place, this micro valve is to predict leaving water temperature according to the hygrosensor of being located at water heater hot-water outlet pipe place to the control of water or throughput, and the water temperature that records conducted to the micro computer CPU, this processing unit compares analysis with observed temperature and the temperature of presetting, output signal is controlled the keying of two micro valves in position again, finally reaches the purpose of control water temperature.

Owing to can being directly installed on to use in the existing water heater, the utility model need not to reequip again or increase any expensive component, thereby have economic, practical advantage, avoided the unnecessary waste and the misgivings of secure context because of need not to regulate water temperature artificially simultaneously.

The temperature that sets when CPU is not at normal temperatures or when water heater starts seasonal coal gas micro valve and closes, the cold water that can directly quote in the cold water pipe uses, therefore no matter wherein the user need not to establish in addition cold water pipe again, and saved unnecessary engineering cost, increased the convenience of using.

Another advantage of the present utility model is, because micro valve is subjected to central processing unit controls, CPU is according to the comparison that performs an analysis of measured leaving water temperature of hygrosensor and set temperature value, and the direct keying degree of by-pass valve control, therefore need not to control, can not light the service life that the base fire reduces the igniter transformer because of repetitiousness via lighting of igniter.

From increasing convenience of using and the purpose that effectively reduces energy resource consumption, the utility model also can design the input with remote control switch control micro computer CPU signal.

Describe technology of the present utility model in detail below in conjunction with the embodiment accompanying drawing.

Accompanying drawing 1 is a prior art water heater structural plan schematic diagram.

Accompanying drawing 2 is the utility model water heater structural plan schematic diagram.

Accompanying drawing 3 is a micro valve breakdown action schematic diagram among Fig. 1.

Accompanying drawing 4 is a micro valve closing motion schematic diagram among Fig. 1.

Address before accompanying drawing 1 explanation, repeat no more.

Referring to accompanying drawing 2, water heater 1 comprises 2, two micro valves of micro computer CPU, 21,22, one high-voltage ignition devices 23 and two hygrosensors 24.Wherein, two micro valves 21,22 are arranged at water heater cold water water inlet pipe 11 and gas inlet pipe 12 places respectively, but the size of interior discharge of control valve and throughput.Two micro valves 21,22 mainly are subjected to the control of the outer micro computer CPU 2 of water heater, but the position of automatic regulating valve door, be located at appropriate position on the water heater hot-water outlet pipe 14 in the hygrosensor 24, there is signal to connect to measure leaving water temperature with micro computer CPU 2 and sends CPU to and carry out signal and handle, be located at appropriate position on the heater inleting pipe 11 in another hygrosensor 24, there is signal to connect with CPU 2, the water inlet water temperature of perception is passed to CPU 2, when inflow temperature add 6 ℃ greater than set water temperature time control gas valve 22 close.High-voltage ignition device 23 also has signal to connect with CPU 2, is located at the appropriate position of water heater burner 15, is responsible for igniting.The trouble that comes and goes operation can be controlled, be exempted to this CPU 2 also can at any time by external remote with wireless remote control mode input control information.

Design according to said structure, the user can set the water temperature of expection in advance on guidance panel, start power switch, the water outlet water temperature that CPU 2 predicts according to hygrosensor 24 is controlled two micro valves 21,22 are opened into the appropriate location, suitably the cold water of the water yield enters water inlet pipe 11, suitably the coal gas of flow enters gas pipe 12, send to heating water tank 13 and burner 15 more respectively, CPU compares analysis with hygrosensor water temperature that records and the water temperature of presetting, at any time adjust micro valve 21,22 degree of opening reach the purpose of automatic adjustment water temperature.When the power supply that cuts off CPU 2, or add 6 ℃ during when inflow temperature, the micro valve 22 of gas inlet pipe 12 is closed fully, and the micro valve 21 of being located at water inlet pipe 11 is all opened greater than set water temperature.Like this, can prevent that not only coal gas from leaking, also can make water inlet pipe 11 continue supply cold water.And can behind Gas shutoff, not make high-voltage ignition device still continue igniting as the water heater of prior art because of opening cold water.

Accompanying drawing 3, accompanying drawing 4 are about the structure of two micro valves 21,22 and the schematic diagram of switching motion thereof, and wherein Fig. 3 is a full-gear, and Fig. 4 is a full-shut position.

Micro valve mainly comprises headstock 25, drive screw 26, valve plug 27, push rod 28 and forward and backward microswitch 29.Wherein headstock 25 is transferred to drive screw 26 through case internally-powered motor and reduction gearing with power, drive screw 26 swivel nuts are in valve plug 27, be located at cross base 11 in the valve plug 27, in 12, motion by drive screw 26 makes valve plug 27 and 26 of drive screws produce relative displacement, push rod 28 vertical connectors are on valve plug 27, push rod 28 tops are provided with the female end seat, the groove 281 and the base 11 of female end seat, rail plate 20 is chimeric in 12, push rod 28 moves along rail plate 20 and with valve plug 27 located lateral, the bottom of push rod 28 can press the front and back microswitch 29 that is arranged in the micro valve, closing of control headstock 25 internally-powered motors reaches the purpose of positioning control.In addition, produce the leakage of water or gas when the displacement, cross base 11,12 in, be provided with leakproof ring 201 on the neighboring of relative valve plug 27 for preventing valve plug 27.

The automatic water temperature control device of the water heater that the utility model provides, the structural design that its uniqueness is simplified again, decapacitation effectively improves outside the deficiency of conventional water heaters aspect ease of use and security, more can improve the problem of present water heater on member is used.

Claims

1, a kind of water heater temperature's automaton, comprise the micro computer CPU, be located at water heater burner place, the high-voltage ignition device that has signal to be connected with the micro computer CPU, be located at water heater heating water tank hot water outlet pipe and cold water inlet place, the two temperatures detector that has signal to be connected with the micro computer CPU, be located at water heater cold water water inlet pipe and gas inlet pipe place respectively, be subjected to two micro valves of micro computer central processing unit controls control valve position, it is characterized in that: described micro valve is by headstock, drive screw, valve plug, push rod and before, back microswitch is formed, described drive screw swivel nut is in valve plug, be located at the air inlet that is cross in the valve plug, in the water inlet base, the vertical connector of described push rod is on valve plug, push rod top has in concave shaped socket and the base rail plate chimeric, the push rod bottom can touch when directed mobile with valve plug place in the micro valve before, back microswitch.

2, water heater temperature's automaton according to claim 1 is characterized in that also comprising the leakproof ring on the neighboring of being located at relative valve plug in the cross base.

3, water heater temperature's automaton according to claim 1 is characterized in that reduction gearing and power motor are arranged in the described headstock, and described microswitch controls cutting out of headstock internally-powered motor.