MXPA06008042A - Gas control/block valve and automatic circulation device of warm water using the gas valves - Google Patents

Abstract

The present invention relates to gas controlling and blocking valves and An automatic warm water circulator using the same, and includes a circulation cycle formed such that a reservoir is connected to a boiler by a supply pipe, the boiler is connected to a heat exchanger by a discharge pipe, and the reservoir is connected to the heat exchanger by a circulation pipe, a hollow combustion chamber provided in the lower side of the boiler and having both sides protruded toward the outside of the boiler, a gas supply and ignition device for supplying the gas to the inside of the combustion chamber and for burning the gas to heat water in the boiler, and a supply valve and discharge valve respectively provided in the supply pipe and the discharge pipe and automatically opened and closed in response to the inner pressure for the boiler. Since the gas is controlling and blocking valves and the automatic warm water circulator using the same uses portable gases as a heat source for producing and circulation warm water, the automatic warm water circulator can conveniently supply the warm water to various heaters even outdoors where it is difficult to use electric power.

Description

CONTROL VALVES / GAS BLOCKING AND DEVICE AUTOMATIC HOT WATER CIRCULATION THAT USES GAS VALVES Field of the Invention The present invention relates to gas control valves, gas lock valves and an automatic hot water circulation device that utilizes them and, more particularly, to gas control valves and gas shut off valves. gas to automatically block and control gas in response to temperature changes using elastic spring force and steam pressure, and an automatic hot water circulation device to control the gas supply in response to changes in the internal temperature of the gas a boiler using gas control valves and gas shut-off valves and to automatically produce and circulate hot water using valves that are opened and closed by internal steam pressure of the boiler and only gas as a heat source without a circulation pump or other devices in such a way that the hot water is supplied continuously to heat Such as floors, bedspreads, quilts, covers, car seats, underground floor heaters, and the like, as well as hot pads used in physical therapy and, particularly, can employ portable gas as a heat source to produce and supply in a manner convenient hot water to the heaters.

BACKGROUND OF THE INVENTION In the conventional form of heat supply to floors, hot pads, or the like, electricity is generally used, conventional blankets, floors or hot pads that are to be electrically heated are effective as one of several methods to provide local heating. However, since electric heaters use an electric heating wire as their heat source, electromagnetic waves are generated that are harmful to the human body. Research has shown that the minimum intensity of electromagnetic waves that are harmful to the human body is between 2 mG and 4 mG. Considering this, the intensity of the electromagnetic waves generated from the electric heaters varies from 50 mG to a value that exceeds 1,000 mG. As described above, since the conventional electric heater has a disadvantage because it is harmful to human health, its use is limited to pregnant women and nursing mothers, as well as ordinary people. In order to solve the above problem, the applicant for this patent application has filed a Korean patent application with the Korean Intellectual Property Office on October 15, 2003, entitled "Automatic hot water circulation device" (Application number 10-2003-0071615). Since the automatic hot-water circulation device in the patent application solves the above problem and is not in any way harmful to health, but uses an electric heater as the heat source to produce and circulate hot water, the device Automatic circulation of hot water is difficult to operate outside, such as in camp areas, amusement parks, or similar, where it is difficult to supply electricity. In consideration of this problem, the applicant for this patent application has developed an automatic hot water circulation device to automatically produce and circulate hot water without the need for electricity.

OBJECTIVES AND SUMMARY OF THE INVENTION Technical Problem: Therefore, the present invention has been conceived in view of the above problems and, it is an object of the present invention to provide a gas control valve and a gas stop valve in which valve pistons move automatically up and down due to an elastic force and vapor pressure to automatically control the amount of gas or to block the gas. Another object of the present invention is to provide an automatic hot water circulation device for adjusting the temperature of a boiler using the aforementioned gas control valve and the aforementioned gas block valve, to produce and continuously supply hot water taking advantage of the change in vapor pressure that occurs when the water in the kettle is transformed into steam and the valves automatically open and close according to the change in steam pressure without a separate source of power, capable of ensuring safety and achieving low manufacturing costs, and particularly, to conveniently supply hot water to several heaters, even outside, using portable gas as a heat source to produce and circulate hot water. Technical Solution: According to one aspect of the present invention, the above and other objects can be achieved by the provision of a gas control valve that includes a hollow valve housing that includes a gas intake port formed in the upper side from this, a gas discharge port formed on the side thereof, an inclined upper end having a narrow upper side and a broad lower side, and an intermediate protruding side, a valve plunger, inserted inside the housing valve to move up and down, with which an O-ring is coupled to seal the space between the valve housing and the valve piston, a compression spring inserted in the space between the valve plunger and the intermediate side that protrudes to apply a force to push the valve plunger down, and a heat exchanger, installed in the part bottom of the valve housing, to increase the vapor pressure to apply a force to the valve plunger so that it is pushed upwards so that the gas control valve automatically adjusts the amount of gas in response to the heat transferred to the heat exchanger. The present invention also provides a gas lock valve that includes a hollow valve housing that includes a gas discharge port formed on the side thereof, a gas intake port formed below the gas discharge port, and a gas discharge port. intermediate protruding side, a valve piston, inserted inside the valve housing to move up and down, with which an O-ring is coupled to seal the space between the valve housing and the valve piston, a compression spring inserted in the space between the valve piston and the intermediate side that protrudes to apply a force to push the valve piston down, and a heat exchanger, installed in the lower part of the valve housing , to increase the vapor pressure to apply a force to the valve plunger so that it is pushed up so that the gas lock valve automatically block the gas in response to the heat transferred to the heat exchanger. According to one aspect of the present invention, the foregoing as well as other objectives can be achieved by the provision of an automatic hot water circulation device utilizing gas valves, including a circulation cycle formed in such a way that a tank is connected to a boiler by means of a supply pipe, the boiler is connected to a heat exchanger by means of a discharge pipe, and the tank is connected to the heat exchanger by means of a recirculation pipe, a hollow combustion chamber provided on the lower side from the kettle and having both sides protruding towards the exterior of the kettle, a gas supply and ignition device to supply with gas the interior of the combustion chamber and to burn the gas to heat the water that is in the kettle, and a supply valve and a discharge valve respectively provided in the pipe A supply and discharge pipe that are provided respectively in the supply pipe and in the discharge pipe and that open and close automatically in response to the internal pressure of the boiler. Preferably, the gas supply and ignition device includes a main nozzle provided in the combustion chamber and connected to a gas container by a gas main line to eject the supplied gas, a pilot ignitor to ignite the gas ejected from the nozzle main, and a gas control valve, provided in the main gas line to automatically control the amount of gas that is going to be supplied to the main nozzle according to the temperature that exists in the boiler. The gas supply and ignition device also includes a gas shut-off valve, installed in the gas main to be connected to the gas control valve in series, to automatically block the gas to be supplied to the gas. main nozzle according to the temperature of the kettle. The combustion chamber includes protruding ends formed in the upper outer circumference thereof, and air intake ports, coupled with both ends of the combustion chamber, through which the air necessary for combustion of the gas is introduced.

The pilot igniter includes a pilot nozzle connected to a branched pilot supply line from the main gas line and installed near the main nozzle, and including a pilot igniter connected to a pilot switch in such a way that the nozzle The pilot light turns on the gas ejected from the main nozzle while the pilot nozzle is turned on. The tank includes an opening for opening a portion of the upper side of the tank, an opening and closing device provided in the opening and having a ventilation hole, and an air pack, installed in the opening and closing device, for sealing the opening and being contracted and expanded due to the pressure difference that exists between the internal pressure of the tank and the external pressure through the opening. The air pack may be provided on the upper or lower surface of the opening and closing device. The automatic hot water circulation device that uses gas control / blocking valves is characterized in that the air packing accommodates water. Advantageous Effects: As described above, since the gas control valve and the gas stop valve according to the present invention automatically adjust the gas quantity and the gas block due to the heat transmitted from the outside, The gas control valve and the gas lock valve serve in a useful manner as a controller and safety device for controlling the supply of gas to the various devices that use gas as the heat source. Furthermore, the automatic hot water circulation device employs the gas control valve and the gas lock valve as a temperature adjuster and a safety device, using valves that are automatically opened and closed by the Vapor pressure generated when the water in the kettle is transformed into steam and in response to the change in vapor pressure so that the automatic hot-water circulating device continuously produces and circulates hot water without the use of a separate driving energy, and does not imply a risk to health. Therefore, the automatic hot water circulation device can be used safely and conveniently in daily heating needs such as blankets, carpets, floors, and to provide a source of heat for work by microbiological laboratories that can not have a source of heating at a close distance using electric heaters or use motor pumps, as well as in medical instruments. In particular, since the automatic hot water circulation device according to the present invention uses portable gases as a heat source to produce and circulate the hot water, the automatic hot water circulation device can conveniently supply the hot water to several heaters still outside where it is difficult to use electric power.

BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and other objects, features and other advantages of the present invention will be understood more clearly from the following detailed description taken in conjunction with the accompanying drawings, in which: Figure 1 is a schematic view illustrating the structure of the open and closed states of a gas control valve according to the present invention. Figure 2 is a schematic view illustrating the structure and open and closed states of a gas lock valve according to the present invention. Figure 3 is a schematic view illustrating the overall structure of an automatic hot water circulation device, using gas valves according to a preferred embodiment of the present invention. Figures 4, 5 and 6 they are schematic views illustrating a supply valve and a discharge valve employed in the automatic hot water circulation device according to the preferred embodiment of the present invention. Figures 7 and 8 are schematic views illustrating a combustion chamber of the automatic hot water circulation device according to the preferred embodiment of the present invention. Figure 9 is a schematic view illustrating a gas supply and ignition device employed in the automatic hot water circulation device according to the preferred embodiment of the present invention. Figure 10 is a perspective view illustrating a reservoir used in the automatic hot water circulation device according to the preferred embodiment of the present invention, and Figures 11 and 12 are views illustrating examples of a pressure adjuster using an air pack used in the automatic hot water circulation device in accordance with the preferred embodiment of the present invention.

Detailed Description of Preferred Modes Best Mode: Hereinafter, the automatic hot water circulation device according to the preferred embodiments of the present invention will be described in detail and with reference to the accompanying drawings. It should be appreciated that the accompanying drawings have been described for illustrative purposes of the preferred embodiments of the present invention, and the accompanying drawings as well as the description with reference to the drawings do not restrict the present invention. Figure 1 is a schematic view illustrating the structure and open and closed states of a gas control valve 10 according to the present invention. As shown in the drawing, the gas control valve 10 includes a valve housing 10a, a gas intake port 10b, a gas discharge port 10c, a valve piston 10d, a compression spring 10e, and an IOf heat exchange plate. The valve housing 10a has a shape in which a sectional area of the housing 10a of the valve gradually increases from the upper side to the intermediate side of the valve housing 10a to form a slope and the intermediate side protrudes in such a way that a sectional area of the intermediate side towards the lower side thereof is constant and the interior of the valve This one is hollow. The gas inlet port 10b where gas is introduced is formed in the upper side of the valve housing 10a, and the gas discharge port 10c for discharging gas is formed in the slope. The valve plunger lOd is inserted into the valve housing 10a such that the valve plunger 10 is inserted into the compression spring 10d to apply a force to push the valve plunger 10d down, and the valve plate 10 Heat exchange is installed in the lower part of the valve housing 10a, that is, the lower side of the valve piston 10d applies a force to push the valve piston 10d upwards.

Here, a predetermined amount of water fills a space between the heat exchange plate 10Of and the valve piston 10D such that the water is transformed into steam when external heat is transferred to the water through the plate. lOf of heat exchange and a predetermined vapor pressure is generated. In this way, the valve plunger lOd is pushed up due to the vapor pressure. The automatic operation of the gas control valve 10 is described in detail below. The gas control valve 10 is installed to contact a device that serves as a heat source such that heat is easily transferred to it through the heat exchange plate 10Of installed in the bottom of the the valve housing 10a. Since the vapor pressure formed between the valve plunger lOd and the heat exchange plate lOf is low when the temperature of the device serving as a heat source is low, the valve plunger lOd is lowered by elastic force of the spring IO compression so that the gas control valve opens. In other words, as shown in the drawing, since there is sufficient space between the valve plunger lOd and the valve housing 10a where the gas flows, the gas introduced into the space through the gas intake port 10b it is discharged through port 10c of gas discharge. When the gas control valve 10 is opened and the heat source is heated due to the supplied gas and its temperature increases and exceeds 100 degrees centigrade, the water between the valve plunger 10 and the exchange plate 10 heat is transformed to steam due to the heat transferred to the heat exchange plate lOf from the heat source to form the vapor pressure, and the valve plunger lOd compresses the compression spring lOe and rises due to the force of the vapor pressure. As described above, when the valve plunger lOd rises continuously, the space, where the gas introduced through the gas inlet port 10b flows, gradually narrows and the quantity of the discharged gas decreases. When the temperature of the device serving as a heat source is reduced due to the decreased amount of the supplied gas, the force due to the vapor pressure is lower than the force of the compression spring 10e and the valve plunger 10D drops. As a result, the quantity of the supplied gas increases again such that the quantity of gas supplied is adjusted automatically according to the temperature of the device which functions as the heat source. If, even if the valve plunger lOd rises and the quantity of the supplied gas decreases, the temperature of the heat exchange plate lOf increases rather than decreases, the vapor pressure in the space between the heat exchange plate lOf and the plunger The valve speed is further increased, and, as shown in the drawings, the valve plunger lOd further rises such that the piston ring O-ring lOg of the valve plunger lOd comes into close contact with the valve housing 10a to prevent the introduction of gas. In this way, the gas supply is completely blocked. Figure 2 is a schematic view illustrating the structure and open and closed states of a gas lock valve 20 according to the present invention. As shown in the drawing, the gas lock valve 20 includes a valve housing 20a, a gas intake port 20b, a gas discharge port 20c, a compression spring 20e, and a gas exchange plate 20f. hot. The valve housing 20a has a shape such that a sectional area of the upper side towards the intermediate side thereof is constant, the intermediate side protrudes and a sectional area of the intermediate side projecting towards the lower end thereof is kept constant. The interior of the valve housing 20a is empty, that is, the valve housing 20a is a hollow cylinder, and it is preferred that the valve housing 20a be installed to come into contact with the device serving as the heat source as the 10 gas control valve. The gas intake port 20b is formed on the side above the intermediate side projecting from the valve housing 20a and the gas discharge port 20c is formed on the side of the valve housing 20a higher than the port 20b of the valve housing 20a. gas admission. The structure of the gas lock valve 20 and the performance of this to block gas according to the heat transferred to the heat exchange plate 20f are identical to those of the gas control valve 10 described above. In other words, when the temperature of the heat exchange plate 20f is low, the valve piston 20d descends due to the compression spring 20e and the gas block valve 20 opens to introduce and discharge the gas. Furthermore, when the supplied gas is burned in such a way that the temperature of the device serving as the heat source is increased and the vapor pressure is formed in the space between the valve plunger 20d and the exchange plate 20f heat, the valve plunger 20d ascends to close the gas lock valve 20 and to block the gas supply. However, since in the gas blocking valve 20 on the upper sides of the valve housing 20a and the valve piston 20d have constant section areas different from those of the valve housing 10a and the valve piston 10d of the gas control valve 10 as shown in the drawing, although the valve plunger 20d rises due to the vapor pressure formed when the temperature transferred to the heat exchange plate 20f is increased, the quantity of gas can not be reduced when the positions of the piston O-rings 20g coupled with the valve plunger 20d are lower than the position of the gas intake port 20b, but the gas is immediately blocked when the valve plunger 20d further rises such that the positions of the piston o-ring 20g are higher than the position of the gas intake port 20b. In other words, the performance of the gas lock valve 20 for adjusting the amount of gas supplied in response to the temperature transferred from the outside is weak compared to the performance of the gas control valve 10, but the valve 20 Gas block only performs the function of blocking the gas supply. In this way, when the gas lock valve 20 is used in conjunction with the gas control valve 10, the gas lock valve 20 preferably serves as a safety device to prevent an exterior device from overheating by blocking of gas when the gas control valve 10 decomposes. Figure 3 is a schematic view illustrating the overall structure of an automatic hot water circulation device using gas valves according to a preferred embodiment of the present invention. As shown in the drawing, the automatic hot water circulation device using gas valves according to a preferred embodiment of the present invention includes a reservoir 31 for supplying cold water and storing the circulated cold water, a kettle 32 for receiving cold water from the reservoir 31 and to discharge hot water, and a heat exchanger 34 to use the hot water as a source of heat and to transfer heat to the outside. The reservoir 31 is connected to the kettle 32 via a supply line 35, the kettle is connected to the heat exchanger 34 via a discharge line 36, and the heat exchanger 34 is connected to the reservoir 31 via a circulation line 37 in a manner such that a circulation cycle is formed. The kettle 32 includes a combustion chamber 33 for heating the cooling water in the kettle 32 by means of gas burning. A gas supply and ignition device 41 is connected to the combustion chamber 33 and the supply pipe 35 as well as the discharge pipe 36 includes supply valves 38 and 39 and a discharge valve 40, both of which are open and closed automatically due to the vapor pressure found in the boiler 32 to control the supply of cold water as well as the discharge of hot water. The reservoir 31 is normally used to store water and includes a water inlet port 31a formed on the upper side of the reservoir 31, through which circulated and return cold water is introduced, and a port 31b of water discharge formed in the lower side of the latter for discharging cold water to the kettle 32. The reservoir 31 is preferably installed in a position higher than that of the kettle 32 such that the cold water in the reservoir 31 is easily discharged into the pipeline. of supply 35 due to gravity. The kettle 32 includes a water supply port 32a formed on the upper side thereof and connected to the supply pipe 35, through which cold water is introduced from the tank 31, and a water discharge port 32b, formed in the lower side thereof and connected to the discharge pipe 36, through which hot water is discharged. Here, the kettle 32 includes a bottom surface preferably inclined at 3 to 5 degrees towards the water discharge port 32b. The reason for the inclined lower surface of the kettle 32 is that the hot water is easily discharged from the boiler 32 to prevent steam from being discharged from the boiler during discharge of the hot water and to reduce the noise. The heat exchanger 34 includes a water inlet port 34a connected to the water discharge port of the kettle 32 via the discharge pipe 36 and a water discharge port 34b connected to the tank 31 by the circulation pipe 37 in such a manner that the heat exchanger 34 receives the hot water from the discharge pipe 36, transfers heat to the outside and circulates the cold water to the tank 31 through the circulation pipe 37. The heat exchanger 34 is applied to various heaters such as mats, quilts or the like and preferably includes connectors for easy connection and disconnection of the pipes. The supply valves 38 and 39 according to the present invention are respectively a conical type supply valve and a cylindrical type supply valve, which are connected in series to the supply pipe 35. Figure 4 is a view schematic illustrating the structure of the conical type supply valve 38. As shown in the drawing, the conical-type supply valve 38 includes a valve housing 38a, a valve diaphragm holder 38c that is installed in the valve housing 38a, and has a water supply port 38b formed in the valve housing 38a. the cone-shaped outer surface thereof and having a side a broad upper side and a narrow lower end, a fixed valve diaphragm 38d between the valve housing 38a and the valve diaphragm 38c and having a lower end displaced upwards and down due to an external force. The conical-type supply valve 38 blocks the leakage of water vapor so that the lower end of the valve diaphragm 38d comes into loose contact with the inclined surface of the valve diaphragm holder 38c in a normal state, and the lower end of the valve diaphragm 38d is pushed down to come into close contact with the inclined surface of the valve diaphragm holder 38c due to the vapor pressure generated when the cold water supplied from the reservoir 31 is heated and transformed into steam. When the pressure inside the boiler 32 is low after the discharge of all the hot water that was in the boiler 32, the valve diaphragm 38d lowers to open the conical type supply valve 38 so that the cold water is supplied to the boiler 32. kettle 32. Figure 5 is a schematic view illustrating the cylindrical type supply valve according to the present invention and, as shown in the drawing, includes a valve housing 39a, a valve body 39b installed in the housing 39a of valve and moving freely upwards and downwards, and a spring 39c having one end fixed to the lower side of the valve housing 39a and the other end is coupled to the inner upper side of the valve body 39b to provide an elastic force to raise the valve body 39b. The cylindrical supply valve 39 prevents leakage of the vapor pressure in the kettle 32 such that the valve body 39b comes into loose contact with the valve housing 39a due to the spring force of the spring 39c in the condition normal, and the valve body 39b comes into loose contact with the valve housing 39a due to the vapor pressure generated when the cold water in the kettle 32 is heated and transformed into steam. When the pressure existing inside the boiler 32 is low after the discharge of all the hot water that was in the boiler 32, the spring 39c lowers and the valve body 39b moves down to open the supply valve 39 of type cylindrical so that the cold water found in the tank 31 is supplied to the boiler 32. The previous supply valves 38 and 39 can help each other when either of them is damaged or malfunctions due to foreign matter, so that achieve a normal circulation of hot water. Since the time for supplying the cold water is determined in accordance with the elastic force of the valve diaphragm 38d of the conical type supply valve 38 and the elastic modulus of the spring 39c of the supply valve 39 of the cylindrical type, the force The elasticity of the valve diaphragm 38d and the force of the spring 39c should be selected within an appropriate range. Preferably, the elastic force of the valve diaphragm 38d and the force of the spring 39c are slightly greater than the sum of the weight of the cold water in the supply pipe 35 fed from the reservoir 31 and the weight of the valve diaphragm 38d, or the weight of the valve body 39c itself, and are of such a degree that the conical-type supply valve 38 is slightly closed when no external force is applied to it. Moreover, since the steam pressure in the kettle 32 rapidly decreases after all the hot water is discharged from the kettle 32, if the supply valves 38 and 39 are not large enough, the time for supplying water is prolonged and friction noise can be generated. In this way, in order to reduce the noise, suitable sizes of the supply valves 38 and 39 are selected. Figure 6 is a schematic view illustrating a discharge valve employed in the present invention, the discharge valve 40. , as shown in the drawing, includes a valve housing 40a, a valve stem 40d penetrating a hole formed in the valve housing 40a and having one end to which a nut 40b is fixed and the other end in which a valve head 40c, a valve diaphragm cover 40e coupled with the valve head 40c is formed to provide a seal between the internal bore of the valve housing 40a and the valve head 40c, and a compression spring 40f, arranged around the valve stem 40d, compressed and fixed by the nut 40b, to provide elastic force to the valve diaphragm cover 40e to come into close contact with the orifice of the valve housing 40a álvula The discharge valve is closed by the compression spring 40f in the normal state, and is opened by the valve stem 40d which moves downward when the vapor pressure is greater than the elastic force of the compression spring 40f so as to of discharging hot water in the kettle 32 to the discharge pipe 36. In other words, the discharge valve 40 is closed when the steam pressure of the kettle 32 is less than the elastic force of the compression spring 40f and is opened when the The steam pressure of the kettle 32 is greater than the elastic force of the compression spring 40f, that is, the discharge valve 40 is automatically opened and closed by the vapor pressure. Since, when the force of the compression spring of the discharge valve 40 is increased, the vapor pressure in the boiler 32 for discharging the hot water is also increased, in order to supply hot water to high or distant areas it is needed an increased force of the compression spring 40f. However, in this case, an excessive increase in water vapor temperature results in slow circulation of hot water. Therefore, the force of the compression spring 40f is preferably selected from an appropriate range. In particular, when the force of the compression spring 40f is too weak, the hot water supply is completed before the temperature in the kettle 32 increases sufficiently, and there is no water vapor to lower the pressure in the kettle 32 after to supply the hot water, in such a way that the hot water can not be produced and circulated automatically. Therefore, it is important to appropriately select the force of the compression spring 40f. Moreover, the discharge valve 40 can adjust the temperature of the hot water produced by the force of the compression spring 40f. In other words, since high vapor pressure is required to open the discharge valve 40 when the force of the compression spring 40f increases, the temperature of the hot water rises. On the other hand, when the force of the compression spring 40f is low, the temperature of the hot water is also lowered relatively. Figures 7 and 8 are schematic views illustrating the structure of the combustion chamber 33 of the automatic hot water circulation device according to the preferred embodiment of the present invention. As shown in Figure 7, the combustion chamber 33 is installed in such a way that both sides of the combustion chamber 33 protrude outwardly by a predetermined distance and extend over the lower side of the kettle 32. The protruding ends of the combustion chamber 33 are coupled with the combustion chamber 33. air intake ports 33a and 33b and a plurality of radiator shaped protrusions 33c are formed in the upper outer circumference of the combustion chamber 33. The air intake ports 33a and 33b coupled with the ends of the combustion chamber 33, as shown in Figure 8, are formed with tiny holes through which air passes in such a way that the necessary air for burning the gas in the combustion chamber 33 is introduced into the combustion chamber 33. However, since the introduced air can alter the combustion of the gas or it can extinguish the flame of the gas when the amount of air intr Oduced inside the combustion chamber 33 through the air intake ports 33a and 33b, it is preferable to drill the tiny holes with diameters equal to or smaller than 0.5 mm in such a way that the exact amount of air necessary to burn the gas in the combustion chamber 33. The outer circumference of the combustion chamber 33, as shown in Figure 8, is preferably formed with bent protuberances in the form of a radiator 33 c. The radiator-shaped protrusions 33c effectively transfer the heat generated by the combustion gas in the combustion chamber 33 to the water that is in contact with the outer circumference of the combustion chamber 33 so as to improve the thermal efficiency. Figure 9 is a schematic view illustrating the structure of the gas supply and ignition device 41. As shown in the drawing, the gas supply and ignition device 41 includes a gas container 42, a main nozzle 43 provided in the combustion chamber 33, a gas main line 44 for connecting the gas container 42 with the gas container 42. main nozzle 43, a main gas valve provided in the gas main pipe 44, a branched pilot gas pipe 46 from the main gas pipe 44, a temperature adjustment valve 50 provided in the rear side of the main pipe 44 of gas where the pilot gas pipe 46 is branched from the main gas pipe 44, a pilot igniter 48 and a pilot switch 49 which serve as ignition devices, and the gas control valve 10 and the 20 gas lock valve, which are constructed as mentioned above. The gas container 42 is a container for storing gas that functions as a heat source of the automatic hot water circulation device in accordance with the preferred embodiment of the present invention, it can be a normal container such as a can of butane gas for a portable gas burner, a LPG gas canister for a gas range, or the like. The gas container 42 is connected to the gas main pipe 44 for supplying gas to the main nozzle 43. The gas main pipe 44 includes the main gas valve 45, the temperature adjustment valve 50 installed on the rear side of this where the pilot gas pipe 46 branches, and the gas lock valve 20 and the gas control valve 10 installed on the rear side of the serial temperature adjustment valve 50.

The main gas valve 45 is a valve that is manually operated to supply gas to the main nozzle 43 and blocks the gas flowing from the gas container 42 to the main nozzle 43, and is preferably handled only when the gas is started and stopped. Automatic hot water circulation device. Since the main gas valve 45 is manually opened and closed, the gate valves that are generally employed as the opening and closing valves can serve as the main gas valve 45. The temperature adjusting valve 50 is provided on the rear side of the main gas pipe 44 from which the pilot gas pipe 46 branches. Since the temperature adjusting valve 50 is closed when the main gas valve 45 is initially opened, the gas is supplied only through the pilot gas pipe 46. By doing this, the gas supplied through the pilot gas pipe 46 is supplied to the main nozzle 43 after turning on the pilot switch 49 the pilot nozzle 47 is turned on. Since there is a danger of an explosion of gas, fire, or the like, when the pilot nozzle 47 is ignited after a significant amount of gas is supplied into the combustion chamber 33 through the gas main pipe 44 prior to ignition of the pilot nozzle 47, said hazard can be prevented by providing gas to the main nozzle 43 after ignition of the pilot nozzle 47. Moreover, the quantity of gas supplied to the main nozzle 43 is confroled by adjusting the opening degree of the temperature adjusting valve 50, thereby adjusting the temperature of the hot water produced and circulated. The gas control valve 10 and the gas lock valve 20 are installed such that their bottom sides come into contact with the surface of the kettle 32 and automatically block the supply of gas from the gas container 42 and / or adjust the amount of gas supplied to the main nozzle 43 due to the elastic forces of the compression springs 10e and 20e and to the vapor pressure generated by the heat transferred from the boiler 32. In other words, when the temperature of the boiler 32 is not high, the valve pistons 10 and 20d of the gas control valve 10 and the gas lock valve 20 are pushed downwards by the compression springs 10e and 20e in such a way that the gas is supplied to the main nozzle 43 of the combustion chamber 33. As such, when the temperature of the boiler 32 exceeds 100 degrees centigrade due to the combustion of the gas supplied during the supply In the case of gas, the water that is in the space between the valve plungers lOd and 20d and the heat exchange plates lOf and 20f is transformed into steam to generate vapor pressure. Due to the vapor pressure, the valve pistons 10 and 20d rise to compress the compression springs 10e and 20e in such a way that the quantity of gas supplied to the main nozzle 43 is reduced. As described above, when the temperature of the kettle 32 is increased and exceeds 105 degrees centigrade even when the gas supply is reduced, the valve pistons 10 and 20d rise further to completely block the gas supply to the main nozzle 43. The gas control valve 10 can block the gas supply when the boiler 32 is overheated during the adjustment of the gas quantity, and the gas blocking valve 20 serves as a safety device when the gas control valve 10 malfunctions. The main nozzle 43 includes a plurality of ejection nozzles 51 for ejecting gas supplied from the gas container 42. The ejection nozzles 51 are fixedly installed in the surface of the lower part of the combustion chamber 33 of the kettle 32 by means of a nozzle holder and are connected to the gas container 42 through a main gas pipe 44. The number of ejection nozzles 51 is preferably selected in accordance with the volume of the boiler 32 such that the appropriate vapor pressure is generated in the boiler 32. The pilot nozzle 47 is installed near the ejection nozzles 51 of the main nozzle 43 and is connected to the main gas pipe 44 through the pilot gas pipe 46 for ejecting gas supplied from the gas container 42. Here, since the pilot gas pipe 46 connected to the pilot nozzle 47 is connected to the gas main pipe 44 facing the gas main valve 45 and the gas lock valve 20, the pilot gas pipe 46 receives continuously gas when the main gas valve 45 is opened despite the operation of the gas lock valve 20 and / or the gas control valve 10. However, the diameter of the pilot gas pipe 45 is significantly smaller than that of the gas main pipe 44, and thus the amount of gas ejected through the pilot nozzle 47 is also significantly less than the amount of gas ejected through the main nozzle 43. The pilot igniter 48 is installed near the pilot nozzle 47 and is connected to the pilot switch 39 in such a way that the igniter 48 of the pilot generates a spark to ignite the ejected gas from the ejection nozzles 51 when the pilot switch 49 is operated. The spark generated by the igniter 48 of the pilot ignites the nozzle 47 of the pilot and the flame of the pilot nozzle 47 ignites the gas ejected from the ejection nozzles 51 of the main nozzle 43 in such a way that the water that is in the boiler 32 is heated. Meanwhile, since the gas is supplied independently to the pilot nozzle 47 and the main nozzle 43 as described above, the gas is continuously fed to the pilot nozzle 47 even when the gas control valve 10 or the gas lock valve 20 provided in the gas main pipe 44 is operated and the gas supply to the main nozzle 43 is blocked. In this way, since the gas control valve 10 or the gas blocking valve 20 stops the combustion of gas in the main nozzle 43 but the gas is continuously supplied to the pilot nozzle 47, the flame is maintained during the operation of the automatic hot water circulation device according to the preferred embodiment of the present invention. However, since only a small amount of gas is supplied to the pilot nozzle 47, the flame of the pilot nozzle 47 does not cause the temperature of the boiler 32 to increase and simply ignites the supplied gas back to the main nozzle 43 The operation of the automatic hot water circulation device using the valves according to the preferred embodiment of the present invention constructed as described above is as indicated below. First, the reservoir 31 * is filled with cold water and the temperature adjusting valve 50 is immersed in the water, and then the main gas valve 45 is opened. After that, the pilot switch 49 is turned on and the temperature adjustment valve 50 is opened to turn on the main nozzle 43. Then, the air in the kettle 32 expands to increase the internal pressure of the kettle 32. If the discharge valve 40 is opened when the internal pressure of the kettle 32 is continuously increased, a part of the air in the kettle 32 is discharged and the temperature of the kettle 32 increases continuously. When the temperature of the boiler 32 is further increased and exceeds the 100 degrees centigrade, the gas control valve 10 and the gas lock valve 20 are closed in such a way that the supply of gas to the main nozzle 32 is blocked.

Thus, the temperature of the kettle 32 is decreased and the internal pressure of the kettle 32 also decreases. At this time, since the gas is continuously supplied to the pilot nozzle through the pilot gas pipe 46 even when the main nozzle flame 43 is turned off due to the interception of the gas supplied to the main nozzle 43, the flame of the pilot nozzle 47 does not extinguish but is maintained. As described above, when the internal pressure of the kettle 32 is reduced to become low pressure to overcome the elastic force of the valve diaphragm 38d of the conical type valve 38 and the force of the compression spring 39c of the supply valve 39 of cylindrical type, the supply valves 38 and 39 are opened so that the cold water that is in the reservoir 31 starts to be supplied to the kettle 32 through the supply line 35. When the kettle 32 is filled with the cold water, the surface temperature of the kettle 32 falls below 100 degrees centigrade and the gas control valve 10 and the gas stop valve 20 are opened again to supply gas to the main nozzle 43. When the The gas is supplied as described above, the flame of the pilot nozzle 47 ignites the gas ejected from the main nozzle 43 and the boiler 32 is heated again. When the cold water in the kettle 32 is heated and reaches a temperature of about 75 degrees centigrade, the vapor pressure is generated in the kettle 32.

At this time, the supply valves 38 and 39 of the supply pipe 35 are closed to prevent the initial steam pressure in the boiler 32 from leaking out of the boiler 32.

When the vapor pressure in the kettle 32 rises further due to continuous heating, the supply valves 38 and 39 are more firmly closed due to the vapor pressure. When the temperature of the hot water increases continuously so that the vapor pressure in the kettle 32 is higher than the force of the spring of the discharge valve 40, the discharge valve 40 is opened and the hot water in the the kettle 32 begins to be discharged through the discharge pipe 36. When the hot water begins to be discharged, the level of the hot water in the kettle 32 is gradually lowered and the vapor pressure in the kettle 32 increases continuously. When all the hot water in the kettle 32 is discharged, since it is difficult to transfer heat generated due to the flame of the main nozzle 43 through gas, the vapor pressure in the kettle 32 is decreased more than it is increased. If at this time, the steam pressure in the kettle 32 has not decreased but the kettle 32 is overheated after the hot water was discharged, the gas control valve 10 and the gas lock valve 20 are, for course, closed to block the gas supply. As such, when the vapor pressure in the kettle 32 is lowered so that the internal pressure of the kettle 32 is low, the supply valves 10 and 20 are automatically opened to supply cold water to the kettle 32 again. When the cold water is supplied to the kettle 32 again, the cold water fed quickly cools the kettle 32 and the internal pressure of the kettle 32 is reduced. Due to the decrease in internal pressure of the kettle 32, the supply valves 38 and 39 are fully opened to supply sufficient cold water to the kettle 32. The client water discharged from the kettle 32 is supplied to the heat exchanger 34 through the discharge pipe 40. The heat exchanger 34, to which the hot water is supplied, transfers heat to the outside from the hot water as a source of heat. Cold water cooled after the heat transfer is discharged through the circulation pipe 37. The cold water discharged through the circulation pipe 37 is circulated to and stored in the tank 31. After that, the cold water is supplied to the kettle 32 in the same manner as described above in such a way that an automatic hot water circulation cycle.

Meanwhile, Figure 10 is a perspective view illustrating the reservoir 31 employed in the automatic hot water circulation device according to the preferred embodiment of the present invention. When the reservoir 31 is sealed, the internal pressure of the reservoir 31 can be reduced in proportion to the vapor pressure due to the amount of water discharged from the reservoir 31, and can be reduced momentarily due to the thermal expansion of high temperature water . Thus, the tank 31 can be subjected to tension repeatedly. For the purpose of solving this problem, since the water stored in the tank 31 evaporates when a part of the tank 31 is opened, supplemental water must be supplied periodically. Therefore, in the automatic hot water circulation device according to the preferred embodiment of the present invention, the reservoir 31 has an opening 31a * to open a portion of the upper side of the reservoir 31, and an air pack 99 that it contracts and expands due to the change in internal pressure of the reservoir 31 to adjust the difference between the internal pressure and the external pressure of the reservoir 31. In other words, as shown in Figure 11, the reservoir 31 is formed with the opening 31a * to open a portion of the upper side of the tank 31, and an opening and closing device 80 for opening and closing the opening 31a * is fixed to the tank 31 by means of a holding device such as a bolt 100. Here, the device 80 of opening and closing is formed with a vent hole 81. The opening and closing device 80 has a cylindrical support 70 for holding the air package 99 to maintain its shape and having a plurality of penetration holes 71. The reason for the formation of the penetration holes 71 is to provide space in which the air package 99 can be expanded. The air pack 99 is housed in the support 70 and the support 70 is fixed to the lower surface of the opening and closing device 80. At that time, the opening part of the air pack 99 is inserted into the vent hole 81 and a fixing ring 60 is inserted into the opening portion of the air pack 99 so that the air pack 99 is fixed to the opening and closing device 80. The air pack 99 can have a cylindrical shape. When the support 70, in which the air pack 99 is accommodated, engages with the opening and closing device 80, the opening and closing device 80 is fixed to the upper opening 3 of the tank 31 by the bolts 100, or similar. As such, the air pack 99 seals the opening 81 and protects the reservoir 31 to separate the reservoir 31 in an interior space and an exterior space. If the interior of the reservoir 31 is pressed when the air pack is installed to the opening and closing device 80, the air pack 99 can act to impede the circulation of water and, as a result, the hot water in the kettle 32 is not download completely. Thus, preferably, the air pack 99 having a predetermined volume is installed in the opening and closing device 80 and its shape changes elastically in accordance with the pressure change such that the air pack 99 is contracts or expands. When the internal pressure is abated due to the discharge of water into the reservoir 31, the air pack 99 expands towards the reservoir 31. Also, when the internal pressure is increased due to the thermal expansion or the expansion volume of the water in the reservoir 31, the air pack 99 contracts outwards. As such, the balance between the internal pressure and the external pressure of the reservoir 31 is adjusted by the confraction and the expansion of the air pack 99. Since the reservoir 31 is protected, the loss of water due to pressure can be prevented. steam. In this way, complementary water is not required and powder and deleterious materials are prevented from dissolving in the reservoir water 31. Meanwhile, the air package 99 can accommodate a small amount of water. For example, since heat from the reservoir 31 is transferred directly to the air pack 99 when the temperature of the reservoir 31 is increased, for the effectiveness of the heat transfer, the air pack 99 can accommodate a small amount of water. Since the heat exchange is carried out quickly in the form of heat conduction and heat convection through the air pack, deformation and chemical damage of the air pack due to temperature change can be prevented. As shown in Figure 12, the air gasket 99 may be installed on the upper side of the reservoir 31. In other words, although the opening and closing device 80 is coupled to the reservoir 31 in the same or similar manner how I know

Claims (10)

1. described above, the opening and closing device 80 is first coupled with the reservoir 31 and the holder 70, in which the air package 99 is installed, is coupled with the upper surface of the opening and closing device 80. As such, the air pack 99 is installed outside the reservoir 31. In this way, since the air pack 99 can be replaced simply by separating the holder 70 without releasing the opening and closing device 80, the air pack 99 is more convenient to use and to maintain it in the case that the air pack 99 is installed in the tank 31. Industrial Application: Although the preferred embodiments of the automatic hot water circulation device according to the present invention have been described for illustrative purposes, it is understood that the technical scope of the present invention is not limited to the foregoing description and that those skilled in In the art, it will be appreciated that various modifications, additions and subutions are possible, without departing from the scope and spirit of the invention as described in the appended claims. Therefore, various modifications, additions and subutions are possible within the scope and spirit of the invention as described in the following claims.
2. Claims 1. A gas control valve, which comprises: a hollow valve housing including a gas inlet port formed in the upper side thereof, a gas discharge port formed in the side thereof, an exhaust gas upper inclined having a narrow upper side and a broad lower side, and an intermediate side protruding; a valve plunger, inserted inside the valve housing to move up and down, with which an O-ring is coupled to seal the space exig in front of the valve housing and the valve plunger; a compression spring inserted in the space that exists in front of the valve plunger and the intermediate side that protrudes to apply a force to push the valve piston down, and a heat exchanger, installed in the lower part of the valve housing , to increase the vapor pressure to apply a force to the valve plunger so that it is pushed upwardly so that the gas confrol valve automatically adjusts the amount of gas in response to the heat transferred to the heat exchanger. 2. A gas shut-off valve, which comprises a hollow valve housing that includes a gas discharge port formed on the side thereof, a gas intake port formed below the gas discharge port, and a side intermediate protruding; a valve piston, inserted inside the valve housing to move up and down, with which an O-ring is coupled to seal the space between the valve housing and the valve piston, a compression spring inserted in the space that exists in front of the valve plunger and the intermediate side that protrudes to apply a force to push the valve plunger down, and a heat exchanger, installed in the lower part of the valve housing, to increase the pressure of steam to apply a force to the valve piston so that it is pushed upwards so that the gas blocking valve automatically blocks the gas in response to the heat transferred to the heat exchanger.
3. 3. An automatic hot water circulation device using valves, which comprises: a circulation cycle formed in such a way that a tank is connected to a boiler by means of a supply pipe, the boiler is connected to a heat exchanger by means of a pipeline discharge, and the tank is connected to the heat exchanger through a recirculation pipeline; a hollow combustion chamber provided on the lower side of the kettle and having both sides protruding towards the exterior of the kettle; a gas supply and ignition device to supply with gas the inside of the combustion chamber and to burn the gas to heat the water that is in the boiler, and a supply valve and a discharge valve respectively provided in the pipeline of supply and discharge pipe and that open and close automatically in response to the internal pressure of the kettle.
4. 4. The automatic hot water circulation device using gas valves as set forth in claim 3, wherein the gas supply and ignition device comprises: a main nozzle provided in the combustion chamber and connected to a container of gas through a gas main pipe to eject the gas supplied; a pilot ignitor to ignite the gas ejected from the main nozzle, and a gas confrol valve, provided in the main gas line to automatically control the amount of gas to be delivered to the main nozzle in accordance with the temperature that exists in the kettle.
5. 5. The automatic hot water circulation device using gas valves as set forth in claim 4, which further comprises: a gas blocking valve, installed in the main gas pipeline to be connected to the gas valve. of gas in series, to automatically block the gas to be supplied to the main nozzle according to the temperature of the boiler.
6. 6. The automatic hot water circulation device using gas valves as set forth in claim 3, wherein the combustion chamber includes: protruding ends formed in the upper outer circumference thereof; and air intake ports, coupled with both ends of the combustion chamber, through which the necessary air for combustion of the gas is introduced.
7. 7. The automatic hot water circulation device using gas valves as set forth in claim 4, wherein the pillar igniter comprises: a pilot nozzle connected to a branched pilot supply line from the main gas line and installed near the main nozzle, and including a pilot igniter connected to a pilot switch such that the pilot nozzle ignites the gas ejected from the main nozzle while the pilot nozzle is ignited.
8. 8. The automatic hot water circulation device using gas valves as set forth in any of claims 3 to 7, wherein the reservoir comprises: an opening for opening a portion of the upper side of the reservoir; an opening and closing device provided in the opening and having a ventilation hole, and an air pack, installed in the opening and closing device, to seal the opening and being contracted and expanded due to the pressure difference that exists cope with the internal pressure of the tank and the external pressure through the opening.
9. 9. The automatic hot water circulation device using gas valves as set forth in claim 8, wherein the air package is provided on the upper or lower surface of the opening and closing device.
10. 10. The automatic hot water circulation device using gas valves as set forth in claim 8, wherein the air package houses water.