RU6872U1 - AUTOMATIC GAS WATER HEATER, ROOM TEMPERATURE REGULATOR - Google Patents

Abstract

1. Automatic gas water heater, consisting of the main and ignition burners, shutoff valve of the main burner, heat exchanger, safety and control automatics, including an electromagnet, the anchor of which is connected to the gas supply valve to the main and ignition burners, ignition flame and draft sensors, regulator water temperature in the heat exchanger, the room temperature controller, containing the room temperature sensor, a control part with an output link and an actuator (control valve an) with an input link, while the actuator (control valve) of the room temperature controller is installed sequentially on the gas path of the main burner, characterized in that the actuator (control valve) of the room temperature regulator is installed on the gas path in front of the safety and control automatics. 2 . The room temperature regulator, consisting of a room temperature sensor, a control part with an output link, an actuator (control valve) with an input link, characterized in that the regulator is made in the form of a radiator thermostat for water heating, through the actuator (control valve) of which gas flows, in this case, the gas parameters ensure the functioning of the regulator itself and the gas consumption of the main burner for the required heat load range AGV.3. The regulator according to claim 2, characterized in that the regulator is made in the form of a radiator thermostat with a gas flow control device in low fire mode. The controller according to claim 3, characterized in that

Description

Automatic gas water heater, room temperature controller (options)

The utility model relates to automatic gas water heaters (AGW) and can also be used in automated heating systems with solid and liquid fuels of individual buildings.

AGV 1 are known in which actuators of water and room temperature controllers (valves) are arranged sequentially on the gas supply path of the main AGV burner, and when closing, for example, the valve of the room temperature controller, it is not possible to use the low fire mode, which ensures a smooth transition of the main burner to maximum fire. In addition, it is naturally impossible to adjust the mode of small fire, necessary to change the adjustment range and dynamics with two-position control of water and room temperature.

AGV and the room temperature controller, described in 1, are accepted by us both as an analogue and as a prototype. In the above-mentioned AGV 1, the executive device (control valve) of the room temperature controller is installed sequentially on the gas path of the main burner between the automatic control and regulation and the shut-off valve of the main burner. it

IPC F23N5 / 00 IPC6 F24H9 / 20

increases production costs at the manufacturer.

To reduce these costs1, the manufacturer proposes to install an actuator (control valve) on the gas path of the main burner also sequentially, but before the safety and regulation automatics.

To eliminate the noted shortcomings in the use of the small-fire regime, three options are proposed for solving these problems.

In the first embodiment, the movement of the output element of the control part of the temperature regulator is limited by centric installation on the input link of the actuator (control valve) of the stroke limiter sleeve of the output limiter of the control part of the room temperature regulator.

In the second embodiment, the distance between the output link of the control part of the room temperature regulator and the input link of the actuator of the said regulator is increased by introducing an adjusting washer-ring between the housings of the control part and the actuator of the temperature regulator.

In the first two variants, the change in the mode of small fire is carried out discretely, respectively. In the first case, by changing the height of the limiter bush and the adjusting washer-ring in the second.

In the third embodiment, the actuator (control valve) of the room controller is shunted

either discretely or continuously and determines the gas flow rate that provides the required value in the mode of small fire.

To simplify production at the AGV manufacturer, it is advisable to shunt the valve of the actuator of the room temperature controller at the factory of the radiator thermostats (individual temperature controllers) 2 by installing between the valve plate and the seat of the control valve (actuator of the temperature controller: placed- gaskets or pre-fit through hole- fox saddle, or p valve, and the height of the gasket or the diameters of the through holes b plate plate pan il :: the seat of the control valve is selected discretely from the condition for choosing the hydraulic resistance value corresponding to the required low-fire mode of the main burner AGV.

Development and serial production of low-cost individual high-precision individual temperature controllers, the valve of which regulates the flow of the working medium — gas is an expensive and lengthy process. In order to exclude such costs and expenses: емemenenk proposes to use a radiator thermostat for water heating, 3, which provides gas consumption of the main burner in the specified range of heat load; as a room temperature controller ;: АГЬ.

The working medium of the room temperature regulator, whose regulating chi-di is regulated; -: kgp ..- iyM4-j.L ribnv. ycTpu i t k. (control valve) regulation i. temperature,: strip:

dow / f /

natural gas, actually performs the function of an element in the statics and dynamics of the process of regulating gas flow and, as a consequence, the room temperature. Since the working medium is involved in the process of establishing equilibrium of forces on the rod of the actuating element (control valve) and in its rearrangement to a new position, thereby determining the dynamics of regulation.

The quality and accuracy of the process control in the controller depends on the viscosity and density of the working medium flowing through it, as well as its geometry.

The studies conducted by the authors showed that the margin of stability and quality of regulation in water heating radiators designed for low-pressure heating systems such as gravitational, for example, Danfoss RTD-G, is sufficient when using a working medium-natural gas and to perform the regulation function as a functional element regulator.

Thus, an automatic gas water heater is proposed, consisting of a main and ignition burner, a shut-off valve of the main burner, a heat exchanger, safety and control automatics, including an electromagnet whose anchor is connected to the gas supply valve to the main and ignition burners, sensors for the presence of a flame of the ignition burner and draft , a water temperature controller in the heat exchanger, a room temperature controller containing a room temperature sensor, a control part with an output link and an actuator equipment (control valve) with inlet

W 2fe & f

wherein the actuator (control valve) of the room temperature controller is installed sequentially on the gas path of the main burner, characterized in that the actuator (control valve) of the room temperature controller is installed on the gas path in front of the safety and control automatics.

A room temperature regulator, consisting of a room temperature sensor, a control part with an output link, an actuator (control valve) with an input link, characterized in that the regulator is made in the form of a radiator thermostat for water heating, through the control valve of which gas flows, while the gas parameters ensure the functioning of the regulator itself and the gas consumption of the main burner for the required range of the AGV heat load.

A room temperature regulator (options), consisting of a room temperature sensor, a control part with an output link, an actuator (control valve) with an input link, is distinguished by the fact that the regulator is made in the form of a radiator thermostat with a gas flow control device in small fire mode.

Temperature regulator (radiator thermostat), in which between the output link of the control part of the regulator is installed centrifugally on the input link of the actuator (control valve) a sleeve stroke limiter of the output link of the control part

regulator, while the height of the sleeve-limiter is selected to ensure low fire mode.

A temperature regulator (radiator thermostat), in which an adjusting washer-ring is inserted between the housings of the control part and the actuator of the regulator, the height of which is selected to ensure the mode of small fire.

Temperature controller (radiator thermostat), in which the actuator (control valve) is shunted by hydraulic resistance with the possibility of changing it continuously or discretely.

Temperature controller (radiator thermostat), in which a gasket is installed between the valve and the seat or the body and the seat of the actuator (control valve), or a through hole is made either in the seat or in the valve plate with the possibility of changing the parameters of the gasket height and diameter of the holes.

Temperature controller (radiator thermostat), with a gas flow control device made in the form of any combination of the options listed above.

Let's move on to the list of figures. Figure 1 shows a schematic diagram of the AGV; Fig. 2 is a general view of the room temperature controller (radiator thermostat); Fig. 3 - general view of the room temperature controller (radiator thermostat) with a sleeve-limiter of the stroke of the output link of the control device; Fig. 4 is a general view of a room temperature controller (radiator thermostat) with an adjusting ring between the housings of the control part and the actuator of the room temperature controller;

Fig. 5,6 - general view of the room temperature controller, control valve, shunted by hydraulic resistance, respectively, constant and adjustable; Fig. 7 - general view of the room temperature controller, control valve with gasket between the plate and the seat; Fig. 8 is a general view of the room temperature controller, the control valve plate has a through hole; Fig. 9 - general view of the temperature controller, the seat of the control valve has a through hole; Fig. 10 is a general view of the temperature controller, a control valve with a gasket between the body and the seat;

in Fig. 11 - the lower temperature control unit / temperature sensor mix with the electronic control part from the extension:.: with a temperature probe. electronic radiator t; i.e. t; on fig. 12- general view of the controller of the room’s test room with the electronic control part frequent :: zyn: sny tsh; :: - :::: -.:- p, -5 r (-tJ -C. -C gg -1 -7T Q 2. t t - T th L / f ™ gr T1, .- h .-

Match: Ohm; .AHV consists of a heat exchanger 1 (Fig. 1), a main burner 2, an ignition burner 3, an ignition burner flame sensor 4, a draft sensor 5, a shut-off valve used in the main burner, an automatic safety and regulation unit 7 (ADB), including an electromagnet 8 with anchor 18, water temperature controller 9 in the heat exchanger 1, room temperature controller 10, remote sensor 11 of the room temperature controller (or thermostatic sensor 22, see figure 3), lever 12,

transmitting influence from the controller 9 temperature; water on the plate - 19 control valve, spring I plate 19, buttons 14 enable AGV through block 7 AEF, plates 15, seats 16 and springs 17 of the valve ADB, seats 20 of the control valve.

The device operates as follows. When pressed

buttons 14, the anchor 1B of electromagnet B, which has not yet received power supply 6t of thermocouple 4, moves the plate 15, pressing it to the seat 20, and the gas passes only to the ignition burner 3 through a pair of plate 15-seat 16 of the ADB valve. After igniting the gas on the pilot burner 3, heating of the flame sensor 4 begins. When the sensor 4 reaches the specified thermopower, the coil of the electromagnet 8 receives power (after 60 s), now the manual pressing of the button 14 can be stopped. Anchor 18 then occupies an intermediate position, moving upward and opening gas access to the main burner through a pair of plate 19-seat 20, which is also in an intermediate position corresponding to the temperature of the water in the heat exchanger. Gas through the seat 16 passes automatically to the ignition burner 3 and through the seat 20 also automatically to the main burner 2, but only after the shut-off valve B of the main burner is opened. After that, the shut-off valve b is opened and the gas, passing along the path, lights up on the main burner 2 from the flame of the ignition burner 3.

Further, if the room temperature recorded by the sensor 11 of the room temperature controller 10 is lower than the set value, the signal from the sensor 11, passing through the control part (not shown in Fig. 1, sensor 11, control part 21) of the controller 10, will move the control valve (in Fig. 2 plate 29) is on-off, providing an increased gas flow rate to increase the room temperature to a predetermined one.

At the same time, the water temperature controller 9 is adjusted to the highest permissible temperature of 90 ° C in the heat exchanger 1, which ensures protection of the boiler from destruction on the one hand and on the other hand, the valve plate 19 is open to the maximum for gas supply to the main burner 2.

The position of the plate 19 in this state remains until the water temperature reaches a value more than the maximum allowable (for various reasons). Then the output link of the water temperature controller 9 in the heat exchanger presses the lever 12, presses the plate 19 to the seat 20, closes the control valve and stops the gas supply to the main burner. If there is no gas supply to the main burner 2, the water in the heat exchanger 1 will begin to cool, which prevents a breakdown of the system.

In practice, the control of the gas supply to the main burner in the operating mode is transferred from the water temperature controller 9 to the room temperature controller 10.

In the reverse process, when the room temperature rises above the set one, the control valve of the room temperature controller 10 will start to close, reducing the gas supply and the amount of fire on the main burner 2, and the room will cool.

cooling the room and automatically opening and closing the control valve of the regulator 10 by a signal from the sensor 11 of the room temperature.

The feed control mode described above. gas depending on the room temperature using the control part of the room temperature controller, made according to the gauge thermometer, requires

user intervention for manual installation

I, - -S

"Normal tnOM 18-22 ° C in the period 6-22; hours,

"Economy mode 1b-17 ° C from 22-6 hours, as well as" standby mode 6-8 ° C in the absence of the user.

The listed modes with greater accuracy of maintaining the set temperature are performed by an electronic radiator thermostat 40 (Fig. 11) with a built-in temperature sensor and with a remote sensor 42 of the room temperature (Fig. 12, item 41). If we compare the electronic control part 40 (Fig. 11), 41 and 42 (Fig. 12) of the room temperature controller together with the control valve 30, which forms the electronic radiator thermostat and the control part, made in the form of a gauge thermometer 11 and 22 (Fig. 2) 22 (Fig. 3), together with the control valve 30, forming a manometric radiator thermostat, we will have the following data:

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The energy efficiency tellers are higher in the case of using an electronic radiator thermostat in the gas supply line to the main burner (Fig. 1, pos. 10.11).

The operation of the unit is as follows. In the case of traction deterioration, the traction sensor 5 opens the power circuit of the coil of the electromagnet 8 and de-energizes it. Anchor 18

the electromagnet 8 will return to its original position and

valve plate; 15 is pressed against the seat 16 by the spring 17.

The gas supply to the pilot 3 and the main 2 burner will stop.

A similar operation of the ADB unit will occur when the gas pressure is reduced or when its supply is stopped due to the cooling of the flame sensor 4, which reduces the generation of thermoelectric power and leads to deenergizing of the electromagnet coil 8.

In the event of severe colds, as well as in the event of a failure of the control valve of the room temperature regulator 10 (Fig. 2, valve 29 does not sit on the seat 28), the coolant temperature may exceed the permissible temperature (90 ° C) and then the plate 19 is pressed against the seat 20 under the influence of the lever 12, closes the gas access to the main burner 2 and prevents the boiler from overheating and the possibility of its destruction in this case.

Figure 2.3 shows a general view of the room temperature controller, which is used as a water heating thermostat, designed by the authors to work on natural gas in a circuit, for example, according to Fig. 1, position 10.11. It consists of a remote sensor 11; a control part 21 comprising a thermostatic sensor 22, a bellows 23, a setting scale 24,

output link 25 and housing 27; an actuator (control valve) 30 comprising an inlet 26, a valve seat 28, a valve disc 29, and a valve body 31.

The room temperature controller operates as follows. In a static state, the pressure corresponding to the room temperature, in a thermostatic

fl j.

the sensor 22 is balanced by the internal spring {on

Fig. 2 is not indicated) in the control part 2L and.

When the ambient temperature rises, the remote sensor -11 will respond by increasing the vapor pressure by transmitting it through a capillary tube to the thermostatic sensor 22 to the bellows 23. This will cause the plate 29 of the valve 30 to move toward the seat 28, decreasing the passage section until an equilibrium is reached between the pressure in the bellows and the spring. A drop in ambient temperature will cause a reverse process until equilibrium is restored.

The room temperature is set on a scale 24 by rotating the control part 21 relative to the housing 27, which leads, for example, to an increase in pressure in the thermostatic sensor 22 (which corresponds to the requirement of decreasing the room temperature). The pressure force through the bellows 23, the output link 25, the input link 26 of the control valve 30, the rod is transferred to the valve plate 29, which, moving, reduces the passage section of the plate pair 29-seat 28. This reduces the gas flow rate, the amount of heat entering the heat exchanger 1 ( fig. 1). Room temperature, fixed distance5- CZECHI / lS

--V WfctfVjjr i

 J-4 D

% j. with the first sensor 11 decreases, and the pressure in the thermostatic sensor decreases and comes into equilibrium with the force of the internal spring located in the governing part 21 of the regulator. In the case of using a radiator thermostat with an external electronic radiator thermostat with an external room temperature sensor (Fig. 12) or with an integrated one (Fig. 11) of various companies, for example, Hertz, Honivell, etc., the room temperature is set using 3 keys on the control panel 43 with the temperature sensor 44. At the same time, it is possible to program the following heating modes using a microprocessor according to individual needs: skittle program (5 working days, 2 days off) program for one day with a range of 6-28 ° C standard factory setting from 3 positions with ;: temperature setting The signal from the remote G ---- or the built-in sensor of the room temperature controller 42 (Fig. 11, 12) is amplified by the control electronic part of the temperature controller and is fed to the electronic device 45, mechanically connected to the executive troystvom (control valve) 30 comprising a input member 26 with the rod 29 and the container heel valve. The direction of movement of the input link 26 of the control valve 50 is determined similarly to that previously written off for the valve that is controlled by a manometric term: meter cm (Fig. 2.3). When the temperature rises, it is slower: after a predetermined time, the control valve closes, and after hissing it opens. Electronic governing holding Psprsprisignal-integral (PI) for: g. -, yang: -g, - - “axGbjxg References.

1. Application No. 940008419/06 with priority dated 11.03.94, published on 11/20/95 in BI No. 32.95.

2. Ingolf Johnsen. Energy saved by individual temperature controllers (radiator thermostats). Devices and control systems No. 7.93, p. 32-33.

3. Radiator thermostats type RTD. Technical description VD.53.P3.50. Danfoss 7/93. Moscow.

4.ACGV 23.2-1. Operating Instructions UVZh1.14700.00.00. RE. Zhukovsky. 1994

5. The device combined household gas with a water circuit GOST 20219-74. SG

6. Gas heating appliance AOFB-J23,2-1U. Operation manual. Energomashexport. M. 1990.7. Technical Catalog 1996. M4.1 Heating Products Honeywell Braukmann Products, p. 37.

Authors:

A.I. Popov

Yu.V. Fundator

we are DATE

Director

A.I. Popov

Claims (8)

1. Automatic gas water heater, consisting of the main and ignition burners, shutoff valve of the main burner, heat exchanger, safety and control automatics, including an electromagnet, the anchor of which is connected to the gas supply valve to the main and ignition burners, ignition flame and draft sensors, regulator water temperature in the heat exchanger, the room temperature controller, containing the room temperature sensor, a control part with an output link and an actuator (control valve en) with the input element, wherein the actuating device (control valve) of the room temperature controller is installed in series in the gas supply path of the main burner, characterized in that the actuating device (control valve) of the room temperature controller is installed on the gas path in front of an automatic safety and regulation.  2. The room temperature controller, consisting of a room temperature sensor, a control part with an output link, an actuator (control valve) with an input link, characterized in that the controller is made in the form of a radiator thermostat for water heating, through which an actuator (control valve) flows gas, while the gas parameters ensure the functioning of the regulator itself and the gas consumption of the main burner for the required AGV heat load range.  3. The regulator according to claim 2, characterized in that the regulator is made in the form of a radiator thermostat with a gas flow control device in low fire mode.  4. The regulator according to claim 3, characterized in that the gas flow control device is made in the form of a limiter sleeve mounted on the input link of the actuator.  5. The regulator according to claim 3, characterized in that the gas flow control device is made in the form of a ring washer inserted between the housings of the control part and the actuator.  6. The regulator according to claim 3, characterized in that the gas flow control device is made in the form of hydraulic resistance shunting the actuator.  7. The controller according to claim 6, characterized in that the shunt is made in the form of a gasket installed between the valve and the actuator seat. 8. The regulator according to claim 6, characterized in that the shunt is made in the form of a hole in the seat or in the valve plate.