KR20210001689U - Boiler water heating device with hot water boiler - Google Patents

Abstract

The present invention uses a mixture of irrigation water preheated to a high temperature by a solar heat collector and low temperature irrigation water filled in the boiler when operating a hot water boiler, so it is equipped with an irrigation water preheating device that can reduce boiler operation time and reduce overall heating costs It is about a hot water boiler. A hot water boiler having an irrigation water preheating device according to the present invention comprises: a boiler having a discharge pipe connected to an outer lower part, an inlet pipe installed in the outer upper part, and a combustion chamber for heating the irrigated water introduced into the inlet pipe; a heating pipe including a water pipe connected to the discharge pipe and provided with a circulation pump for supplying water by pushing, a distributor connected to the water pipe, and a return pipe connecting the distributor and the inlet pipe; a supplementary water container including a water tank body located on the outside of the boiler, a float valve installed inside the water tank body, and a make-up water inlet pipe installed at the lower part of the water tank body and connected to the inlet pipe; An auxiliary tank installed outdoors and storing irrigation water, a solar heat collecting plate installed on one side of the auxiliary tank and preheating the irrigation water stored in the auxiliary tank, and one end connected to a water supply pipe installed adjacent to the discharge pipe and the other end of the auxiliary tank A preheating side water pipe connected to the side, one end connected to the other side of the auxiliary tank and the other end connected to a return pipe installed at a position adjacent to the inlet pipe, the preheating side circulation pipe, and the preheating side supply pipe to push and supply water It includes a preheating side circulation pump installed in a position adjacent to one end, a temperature sensor sensing the temperature of the irrigation water accommodated in the auxiliary tank, and a control unit selectively driving the preheating side circulation pump according to the detected temperature of the temperature sensor.

Description

Hot water boiler with irrigation preheating device {BOILER WATER HEATING DEVICE WITH HOT WATER BOILER}

The present invention relates to a hot water boiler equipped with an irrigation water preheating device, and more particularly, when operating a hot water boiler, the operation of the boiler is because the irrigation water preheated to a high temperature by the solar heat collector and the low temperature irrigation water filled in the boiler are mixed and used. It relates to a hot water boiler having an irrigation preheater that can reduce the time and reduce the overall heating cost.

In general, hot water boilers are used to warmly heat indoor spaces such as houses, apartments, and greenhouses where crops are grown, or to supply hot water to a kitchen or bathroom. Such hot water boilers mainly use oil hot water boilers, gas hot water boilers, and fire wood hot water boilers depending on the energy source, but these days, solar hot water using solar heat can be replaced due to the increase in the price of fossil energy such as oil, gas and fire wood. Boilers are becoming increasingly popular.

Conventionally, in the Republic of Korea Patent Publication No. 10-1778373 (name of the invention: upward and downward hot water boiler), which the applicant applied for and registered for a patent, an outlet pipe and an inlet pipe are installed, and heating the irrigated water introduced into the inlet pipe A first including a boiler having a combustion chamber, a first water supply pipe connected to an exhaust pipe and provided with a first circulation pump, a first distributor connected to the first water supply pipe, and a first return pipe connecting the first distributor and the inlet pipe A second heating pipe including a heating pipe, a second water pipe connected to the discharge pipe and installed with a second circulation pump, a second distributor connected to the water pipe, and a second return pipe connecting the second distributor and the inlet pipe; 2 is disclosed a technical configuration comprising a make-up water tank installed at a lower position than the distributor.

In addition, in Korean Patent Laid-Open Publication No. 1997-0070841 (title of invention: hot water heat exchange system for heating using solar heat and late-night power), a hot water tank having a coil-type heat exchange copper pipe and a heater installed under the copper pipe And, a technical configuration is disclosed including an auxiliary boiler connected to the copper pipe, a heating unit connected to the auxiliary boiler and the circulation pipe of the copper pipe, and a solar heat collecting plate connected to a hot water tank and an inlet pipe and an outlet pipe.

The upward and downward hot water boiler disclosed in the patent document of the present applicant has to heat the water filled in the boiler to a high temperature only with the heat source of the combustion chamber installed in the boiler. Therefore, there is a problem in that the heating cost increases in proportion to the operating time because the boiler has to be operated for a long time in order to warm the unheated irrigation water to the desired temperature by the user.

The hot water heat exchange system for heating using solar heat and late-night power disclosed in other patent documents has a structure in which water from an auxiliary boiler is preheated in a hot water tank. That is, the heat transfer rate is low because the heating medium oil filled in the hot water tank is used for indirectly preheating the irrigation water of the auxiliary boiler instead of using it for irrigation. Therefore, there is a problem in that the heating cost increases in proportion to the operating time of the boiler. In addition, it is necessary to provide a space for installing a separate hot water tank filled with thermal oil, not irrigation, and if the hot water tank is installed so that the hot water tank is not visible, the piping work becomes complicated and construction work is cumbersome. In addition, in a hot water heat exchange system for heating and using solar heat and late-night power, irrigation water circulates in a state in which dissolved oxygen is contained in a large amount. Therefore, the efficiency of the auxiliary boiler is lowered due to the large amount of heat loss due to dissolved oxygen that interferes with heat transfer. Also, if it overheats, there is a high risk of damage to nearby devices because the water supply tank overflows.

An object of the present invention is to provide a hot water boiler having a new irrigation preheating device that can solve the above problems.

A hot water boiler having an irrigation water preheating device according to the present invention includes a boiler, a heating pipe, a supplemental water tank, and a preheating device. The boiler includes an outlet pipe connected to the lower outer side, an inlet pipe installed in the upper outer side, and a combustion chamber for heating the water introduced into the inlet pipe.

The heating pipe includes a water pipe connected to the discharge pipe and provided with a circulation pump for supplying water by pushing, a distributor connected to the water pipe, and a return pipe connecting the distributor and the inlet pipe. The make-up water tank is installed on the outside of the boiler, and includes a water tank body, a float valve installed inside the water tank body, and a make-up water inlet pipe connected between the lower part of the water tank body and the circulation pipe.

The irrigation preheating device is installed outdoors and is connected to an auxiliary tank for storing the supplied irrigation water, a solar heat collecting plate installed on one side of the auxiliary tank and preheating the irrigation water stored in the auxiliary tank, and one end connected to a water pipe installed in a position adjacent to the discharge pipe The other end of the preheating water pipe is connected to one side of the auxiliary tank, and one end is connected to the other side of the auxiliary tank and the other end is connected to the return pipe installed adjacent to the inlet pipe. A preheating circulation pump installed in a position adjacent to one end of the preheating supply pipe to supply the supply, a temperature sensor sensing the temperature of the water contained in the auxiliary tank, and selectively driving the preheating circulation pump by the detected temperature of the temperature sensor It includes a control unit that

The solar heat collecting plate according to the present invention further includes a sunshade to block the contact of solar energy on the upper portion.

The structure of a hot water boiler having a preheating device for irrigation according to the present invention reduces the operating time of the boiler by mixing the irrigation water in the combustion chamber and the high temperature irrigation water heated by the preheating device to start heating while the temperature of the irrigation water is elevated. It has the effect of innovatively reducing heating costs.

In addition, since the water supply pipe is connected to the discharge pipe installed in the lower part of the boiler, the return pipe is installed in the inlet pipe installed in the upper part of the boiler, and the replenishment water tank which discharges dissolved oxygen and saturated steam is connected to the circulation pipe, it follows the solar heat collecting plate. The flowing irrigation water maintains a vacuum state in which dissolved oxygen and saturated steam are removed. Therefore, even if the irrigation water is overheated by strong sunlight such as in summer, the risk of explosion is low, so it can be used safely. In some cases, it is possible to cover the upper part of the solar heat collecting plate with a sunshade, so that it is possible to prevent the irrigation water filled in the auxiliary tank from being rapidly heated in the summer when the hot water boiler is not used. In addition, the irrigation water flowing along the boiler, the heating pipe and the auxiliary tank maintains a vacuum state in which dissolved oxygen and saturated steam that interfere with heat transfer are removed, thereby reducing the heat loss of the hot water boiler and improving the efficiency of the hot water boiler. .

In addition, an irrigation water preheater using a solar heat collector installed in a hot water boiler that maintains a vacuum state can be installed regardless of the height of the boiler. Therefore, there is an effect that the construction work is easy because the plumbing construction is not complicated or difficult.

1 is a schematic diagram showing an embodiment of a hot water boiler having a preheating device for irrigation according to the present invention.
2 is a schematic view showing a state in which a sun shade is installed at one end of the upper part of the solar heat collecting plate of the water preheating device according to the present invention.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings.

Hereinafter, a preferred embodiment of a hot water boiler having an irrigation preheating device according to the present invention will be described in detail based on the accompanying drawings.

1 and 2, the hot water boiler 100 provided with the irrigation preheating device of the present invention is a boiler 110, a heating pipe 120, a replenishment water tank 130, a preheating device 140 and a sunshade ( 150).

The boiler 110 includes an outlet pipe 111 , an inlet pipe 112 , and a combustion chamber (not shown). The discharge pipe 111 is installed on the lower outer side of the boiler 110, and is used as a pipe through which the high-temperature irrigation water heated in the boiler 110 is supplied to each room or irrigation water for supplying hot water to the kitchen or bathroom is discharged. The inlet pipe 112 is installed on the outer upper portion of the boiler 110 , and uses the low-temperature irrigated water recovered after heating as a pipe recovered to the boiler 110 . The combustion chamber (not shown) is installed inside the boiler 110 , and heats low-temperature irrigation water introduced or recovered into the boiler 110 to a high temperature.

The heating pipe 120 is a top-down hot water supply pipe installed to heat the lower floor 10 lower than the boiler 110 . The water supply pipe 121 of the heating pipe 120 is connected between the discharge pipe 111 and the distributor 123, and the circulation pump 122 is installed in the water supply pipe 121 to push and supply hot water to the distributor 123. . The distributor 123 is installed at a lower position than the inlet pipe 112, and includes a water supply/distributor (not shown) and a return water distributor (not shown). Among them, the water distributor is located below the distributor 123 to divide and supply the high-temperature water supplied through the water pipe 121 . The water exchange distributor collects the low-temperature irrigation water that is circulated and recovered and supplies it to the boiler 110, and is located above the water distributor. The return pipe 124 is connected between the distributor 123 and the inlet pipe 112 .

The replenishment water tank 130 is installed on the outside of the boiler 110 and includes a water tank body 131 and a cover 132 and a float valve (not shown). The canister body 131 has a cylindrical shape with an open top, and holes are formed in the upper side and the lower, respectively, and the make-up water is introduced into a supply pipe (not shown) connected to the hole formed in the side and discharged through the hole formed in the lower part. . The cover 132 is installed to block the open upper part of the canister body 131, and the float valve is installed inside the canister body to control the flow of make-up water flowing into the canister body. The make-up water inlet pipe 133 is installed between the hole and the connection formed in the lower part of the canister body 131 and the inlet pipe 112 of the boiler 110 .

The water preheating device 140 according to the present invention includes an auxiliary tank 141 , a solar heat collecting plate 142 , a preheating supply pipe 143 , a preheating side return pipe 144 , a preheating side circulation pump 145 , and a temperature sensor ( 146), a control unit 147, and a fixing bracket (148).

The auxiliary tank 141 is disposed outdoors and stores water supplied from the boiler 110 . The solar heat collecting plate 142 preheats the water stored in the auxiliary tank 141 , and the solar heat collecting plate 142 has a structure in which pipes connected to the auxiliary tank 141 are disposed therein. Such a structure is a technique that is generally applied a lot, and a detailed description thereof will be omitted. One end of the preheating side water pipe 143 is connected to the water pipe 121 installed at a position adjacent to the discharge pipe 111 and the other end is connected to one side of the auxiliary tank 141, and the auxiliary tank 141 in the boiler 110 ) is used as a pipe supplying irrigation water. One end of the preheating side circulation pipe 144 is connected to the other side of the auxiliary tank 141 and the other end is connected to the return pipe 124 installed at a position adjacent to the inflow pipe 112, and the solar heat collecting plate 142. It is used as a pipe for supplying the high-temperature irrigation water preheated by the boiler (110).

The preheating side circulation pump 145 is installed between the auxiliary tank 141 and the preheating side supply pipe 143 , and supplies water from the boiler 110 by pushing it upward in the auxiliary tank 141 . The temperature sensor 146 is installed in the upper part of the other side of the auxiliary tank 141 to detect the temperature of the irrigation water introduced into the auxiliary tank 141 and preheated by the solar heat collecting plate 142 . The control unit 147 receives the signal of the temperature sensed by the temperature sensor 146 and controls the driving of the preheating side circulation pump 145 installed in the preheating side supply pipe 143 . That is, when the temperature sensor 146 senses the temperature of the irrigation water stored in the auxiliary tank 141 is higher than the set temperature, the control unit 147 operates the preheating side circulation pump 145 . Then, the low-temperature irrigation water stored in the boiler 110 is supplied to the auxiliary tank 141 by the preheating side circulation pump 145 , and the high temperature irrigated water stored in the auxiliary tank 141 is supplied by the preheating side circulation pump 145 . It circulates as it flows into the boiler 110 . Therefore, the irrigation temperature of the auxiliary tank 141 can be lowered while being mixed and replaced with the supplied irrigation water at a low temperature. In addition, the auxiliary tank 141 is prevented from being overheated by circulating the preheated water from the auxiliary tank 141 to the boiler 110 .

When the mixed irrigation water as described above is supplied to the boiler 110 through the preheating side return pipe 144, the combustion chamber of the boiler 110 mixes the preheated irrigation water with the irrigation water stored in the boiler 110 and warms it to some extent. By heating the boiler, the operating time of the boiler can be shortened and the heating cost can be reduced.

It is preferable to install the fixing bracket 148 so that the preheating device 140 according to the present invention can be stably supported when installed on a rooftop or roof where sunlight is well received. However, the present invention is not limited thereto, and any structure capable of securely fixing the preheating device 140 to the roof or the roof may be used.

The sunshade 150 blocks the upper portion of the solar heat collecting plate 142 from contacting solar energy, so that the summer solar heat collecting plate 142 is exposed to sunlight to prevent the water stored in the auxiliary tank 141 from being overheated to a high temperature. do. The sunshade 150 of the present invention is installed on the upper end of the solar heat collecting plate 142 , and includes a sunshade 151 and a case 152 . The shading film 151 is to block the upper part of the solar heat collecting plate 142 from sunlight, and the case 152 is installed to keep the shading film 151 from being damaged. The sunshade 150 of the present invention is a structure in which the user directly holds the sunshade 151 and covers the solar heat collecting plate 142, but it may be automatically operated using a motor, a gear, and a link.

A detailed operating state of the hot water boiler 100 according to an embodiment of the present invention will be described.

First, the irrigation water stored in the auxiliary tank 141 of the preheating device 140 is heated to a high temperature while flowing through the solar heat collecting plate 142 exposed to solar energy. The temperature of the preheated irrigation water is detected by the temperature sensor 146 installed in the auxiliary tank 141 . The control unit 147 operates the preheating side circulation pump 145 according to a signal from the temperature sensor 146 that senses the preheated irrigation water to a high temperature greater than or equal to the set temperature. Then, the non-preheated water stored in the boiler 110 is supplied to the auxiliary tank 141 along the preheating side supply pipe 143, and the water preheated by the solar heat collecting plate 142 is the preheating side return pipe 144. As they are introduced into the boiler 110, they are mixed together.

When the boiler 110 is operated, the burner installed in the combustion chamber starts heating in a state in which the irrigation water preheated by the preheating device 140 and the non-preheated irrigation water are mixed to increase the temperature of the irrigation water. Therefore, it is possible to reduce the operating time of the boiler because it is heated in a shorter time than when heating water that has not been preheated in the prior art. In addition, the hot water boiler of the present invention operates in a state in which dissolved oxygen and saturated steam contained in the irrigation water are discharged to the outside through the make-up water tank 130 . Therefore, since the water flowing along the boiler 110, the heating pipe 120, and the auxiliary tank 141 maintains a vacuum state in which dissolved oxygen and saturated steam that interfere with heat transfer are removed, heat loss is small.

As described above, the irrigation water heated while maintaining the vacuum state is supplied to the heating pipe 120 through the discharge pipe 111, respectively. And the irrigation water, which is heated in each room through the heating pipe 120 and the temperature is lowered, passes through the return pipe 124 and passes through the inlet pipe 112 connected to the upper part of the boiler 110 to the inside of the boiler 110. recover The recovered irrigation water is heated again in a mixed state with irrigation water preheated by the preheating device 140 in the boiler 110 and circulated to the heating pipe 120 .

According to the present invention, when the make-up water tank 130 is installed in a large-capacity case, the make-up water reference water level of the supplementary water tank 130 and the irrigation standard water level of the boiler 110 are located on the same line (to be the same height). it's good However, when the capacity is small, such as for home use, the make-up water reference water level of the make-up water tank 130 may be located above the water supply standard water level of the boiler 110 . When installed in this way, saturated steam and dissolved oxygen contained in the irrigation water are removed to the outside through the supplementary water tank 130 . Therefore, since the high-temperature irrigation water from which dissolved oxygen is removed circulates through the heating pipe 120, heating efficiency is improved and energy can be saved.

Although the irrigation preheater according to the present invention has been described with respect to a top-down hot water boiler, it can be installed in both a bottom-up hot water boiler or an upward and downward hot water boiler. In addition, when the winter temperature drops, the irrigation water flowing through the auxiliary tank 141 , the solar heat collecting plate 142 , the preheating side supply pipe 143 , and the preheating side return pipe 144 may freeze. It goes without saying that antifreeze can be mixed with irrigation to prevent this.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical spirit of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art of the present invention can improve and change the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the protection scope of the present invention as long as it is obvious to those of ordinary skill in the art.

100: hot water boiler 110: boiler
120: heating pipe 130: replenishment water tank
140: preheating device 141: auxiliary tank
142: solar heat collecting plate 143: preheating side supply pipe
144: preheating side return pipe 145: preheating side circulation pump
146: temperature sensor 147: control unit
150: sun shade

Claims (2)

A boiler having a discharge pipe connected to the lower outer side, an inlet pipe installed in the upper outer side, and a combustion chamber for heating the water introduced into the inlet pipe;
a heating pipe including a water pipe connected to the discharge pipe and provided with a circulation pump for supplying water by pushing, a distributor connected to the water pipe, and a return pipe connecting the distributor and the inlet pipe;
a replenishment water container including a water tank body located outside the boiler, a float valve installed inside the water tank body, and a make-up water inlet pipe installed under the water tank body and connected to the inlet pipe;
An auxiliary tank installed outdoors and storing the supplied irrigation water, a solar heat collecting plate installed on one side of the auxiliary tank and preheating the irrigation water stored in the auxiliary tank, and one end connected to a water pipe installed at a position adjacent to the discharge pipe and The other end of the preheating water supply pipe is connected to one side of the auxiliary tank, the preheating side circulation pipe is connected to the other side of the auxiliary tank and the other end is connected to the return pipe installed at a position adjacent to the inlet pipe; A preheating side circulation pump installed at a position adjacent to one end of the preheating supply pipe to push and supply irrigation water, a temperature sensor sensing the temperature of the irrigation water accommodated in the auxiliary tank, and the temperature detected by the temperature sensor. A hot water boiler having an irrigation preheating device including a control unit for selectively driving a preheating side circulation pump. According to claim 1,
The solar heat collecting plate, a hot water boiler having an irrigation preheating device further comprising a sunshade to block the contact of solar energy on the upper portion.

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