KR20240024582A - Air heating apparatus and water supplying method for air heating apparatus - Google Patents

Abstract

The air heating device according to the present invention includes an expansion tank provided to store water, a water heater provided to heat the water by receiving heat from combustion gas generated by a combustion reaction, and the water heated by the water heater. A heating heat exchanger provided to receive the air and exchange heat with the air to be discharged for heating, a fan provided to send the air to the heating heat exchanger, and inside the expansion tank, the water heater, the heating heat exchanger, and the fan. It includes a case disposed, wherein the case is an enclosure in which a first opening is formed on a reference direction side in one direction perpendicular to the vertical direction, is provided to be coupled to the enclosure, and opens the first opening when coupled to the enclosure. It includes a first opening cover that covers the enclosure, and the first opening cover is formed with a communication part that connects the expansion tank and the outside of the case to guide water from the outside of the case to the expansion tank. It can be.

Description

Air heating device and air heating device water supply method {AIR HEATING APPARATUS AND WATER SUPPLYING METHOD FOR AIR HEATING APPARATUS}

The present invention relates to an air heating device for heating and a method of supplying water to the air heating device.

In North American homes, heating can be achieved by supplying heated air through ducts connected to each room. For heating air, devices called gas furnaces are usually used. Heating can be supplied by transferring heat generated by burning fuel in a gas furnace to the air, and distributing the heated air to each room.

These gas furnaces generally allow the high-temperature combustion gas generated by the combustion reaction of the burner to flow inside the pipes included in the heat exchanger, and allow air to flow around the pipes to exchange heat between the air and combustion gas in the heat exchanger. It uses a method of heating the air.

These gas furnaces may cause problems such as leakage of combustion gas and drying of the air in the house. In order to compensate for the problems of the above-mentioned gas furnace, the application of a new type of furnace called a hydro furnace may be considered.

Hydro furnaces generally heat water through high-temperature combustion gas generated by the combustion reaction of a burner, allow the heated water to flow inside the pipes of a heat exchanger, and use a fan to flow air around the pipes, thereby mixing water and air. It uses a method of warming the air through heat exchange.

However, the hydro furnace has a complex overall structure. Therefore, if the inside of the hydro furnace structure, especially the parts located inside, fails, the entire hydro furnace must be dismantled, making repair difficult.

In addition, the location where the hydro furnace can be placed is different for each household, and the free placement of the hydro furnace is restricted due to the pipes that protrude from the outside of the hydro furnace to allow water or fuel to flow into the interior of the hydro furnace. There was.

In addition, when replenishing water in the expansion tank located inside the hydro furnace, the case of the hydro furnace must first be separated and then the expansion tank inside must be filled with water, making the water filling process complicated.

Additionally, in the case of a hydro furnace, there are many internal parts, and there is a problem in that the overall size increases depending on the combination of the constituent parts.

The object of the present invention is to provide an air heating device and a method of supplying water to the air heating device that can fill an expansion tank with water without removing the case.

An air heating device according to an embodiment of the present invention includes an expansion tank provided to store water, a water heater provided to heat the water by receiving heat from combustion gas generated by a combustion reaction, and the water heater. A heating heat exchanger provided to receive the heated water and exchange heat with air to be discharged for heating, a fan provided to send the air to the heating heat exchanger, and inside the expansion tank, the water heater, and the heating heat exchanger. and a case in which the fan is disposed, wherein the case includes an enclosure having a first opening formed on a side of a reference direction that is perpendicular to the vertical direction, and is provided to be coupled to the enclosure, and when coupled to the enclosure, the It includes a first opening cover that covers the first opening, and the enclosure or the first opening cover has an opening to connect the expansion tank and the outside of the case to each other to guide water from the outside of the case to the expansion tank. A communication portion provided to do so may be formed.

A method of supplying water to an air heating device according to an embodiment of the present invention includes an opening step of opening a communication part of a case of the air heating device, an injection step of injecting water into an expansion tank of the air heating device through the communication part, The air heating device includes the expansion tank provided to store water and the case in which the expansion tank is disposed, the case having a first opening on a reference direction side in one direction perpendicular to the vertical direction. An enclosure is formed, and is provided to be coupled to the enclosure, and includes a first opening cover that covers the first opening when coupled to the enclosure, wherein the first opening cover connects the expansion tank and the outside of the case to each other. The communication part may be formed to open for connection and guide water from the outside of the case to the expansion tank.

According to the present invention, water can be filled in the expansion tank through an inlet formed in the case, so the expansion tank can be filled with water without removing the case.

Figure 1 is a diagram showing a heating system including an air heating device according to Embodiment 1 of the present invention.
Figure 2 is a perspective view showing an air heating device according to Example 1 of the present invention.
Figure 3 is a view showing the air heating device according to Example 1 of the present invention with the first opening cover removed and viewed from the reference direction.
Figure 4 is a view showing the air heating device according to the first embodiment of the present invention with the enclosure removed and viewed from the vertical direction and the direction perpendicular to the reference direction.
Figure 5 is a diagram showing a cross-section of the airtight portion and the second partition and an enlarged view of the cross-section.
Figure 6 is an enlarged view showing the second partition wall and the heating heat exchanger separated.
Figure 7 is an enlarged view showing the second partition wall and the heating heat exchanger combined.
Figure 8 is a view showing the second partition wall separated from the enclosure.
Figure 9 is a view showing the heating heat exchanger separated from the enclosure.
Figure 10 is a diagram showing an enlarged view of partition space 1-1 and its lower side.
Figure 11 is an enlarged view of the first partition wall viewed from the reference direction.
Figure 12 is an enlarged view of the lower side of the 2-1 partition space.
Figure 13 is a view showing the third partition wall separated from the enclosure.
Figure 14 is a diagram showing the fan separated from the enclosure.
FIG. 15 is a diagram illustrating a case where the water inlet pipe, fuel inlet pipe, and condensate discharge pipe are arranged opposite to the arrangement in FIG. 3.
Figure 16 is a view showing the covering cover removed.
Figure 17 is a view showing the opening and closing member separated.
Figure 18 is a diagram showing water flowing into the expansion tank through the communication part.
Figure 19 is a diagram showing another example of a communication unit.
Figure 20 is a diagram showing water flowing into an expansion tank through another example of a communication part.
Figure 21 is a view showing the air heating device according to Example 2 of the present invention with the enclosure removed.
Figure 22 is a view showing the air heating device according to Example 3 of the present invention with the enclosure removed.

Hereinafter, some embodiments of the present invention will be described in detail through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing an embodiment of the present invention, if a detailed description of a related known configuration or function is judged to impede understanding of the embodiment of the present invention, the detailed description will be omitted.

Figure 1 is a diagram showing a heating system including an air heating device according to Embodiment 1 of the present invention.

Referring to the drawings, a heating system including an air heating device according to Embodiment 1 of the present invention may be installed in a house. The heating system may include an air heating device 1 for heating air. The air heating device 1 is connected to a duct 3 connected to each room of the house, and can perform heating by delivering heated air to each room. Air may enter the air heating device 1 from the outside of the house, or may be returned to the air heating device 1 via the rooms of the house. Although air may flow into the air heating device 1 from the outside of the house, the description of the present invention basically assumes that the air is returned.

In this specification, front-back, left-right, and up-down directions are referred to for convenience of explanation, and may be directions perpendicular to each other. However, this direction is determined relative to the direction in which the air heating device 1 is arranged, and the vertical direction may not necessarily mean the vertical direction.

The heating system may further include a separate heater (4) for the formation of hot water, and a condenser that supplies refrigerant to the air heating device (1) in the summer so that cold air can be supplied through the air heating device (1). (2) can be an outdoor unit.

Example 1

First, the basic components of the air heating device according to Embodiment 1 of the present invention will be described in detail with reference to the drawings. Figure 2 is a perspective view showing an air heating device according to Example 1 of the present invention. Figure 3 is a view showing the air heating device according to Example 1 of the present invention with the first opening cover removed and viewed from the reference direction. Figure 4 is a view showing the air heating device according to the first embodiment of the present invention with the enclosure removed and viewed from the vertical direction and the direction perpendicular to the reference direction. For reference, in each drawing, some components, such as an enclosure, may be omitted for convenience of illustration.

Referring to the drawing, the air heating device 1 according to Example 1 of the present invention includes a case 10, an expansion tank 20, a water heater 30, a heating heat exchanger 40, and a fan 50. It can be included. To briefly describe the overall air heating mechanism, the air heating device 1 heats the water stored in the expansion tank 20 in the water heater 30 and then sends it to the heating heat exchanger 40. The heated water sent to the heating heat exchanger 40 warms the air blown from the fan 50, and the warmed air is delivered to each room. Below, each component is described in more detail.

<Case (10)>

The case 10 may have an expansion tank 20, a water heater 30, a heating heat exchanger 40, and a fan 50 disposed therein. Case 10 may include an enclosure 11, a first opening cover 13, a first partition wall 14, a second partition wall 15, and a third partition wall 16.

A first opening 12 may be formed in the reference direction D, which is a direction perpendicular to the vertical direction of the enclosure 11. For example, the reference direction D may be forward. The first opening cover 13 is provided to be coupled to the enclosure 11 and can cover the first opening 12 when coupled to the enclosure 11. The first opening cover 13 can be separated from the enclosure 11 for later internal repairs of the air heating device 1 . For example, the first opening cover 13 includes an upper cover that covers the upper part of the first opening 12 with respect to the first partition wall 14, which will be described later, and a lower cover that covers the lower part. may include. However, it is not necessarily limited to this, and one first opening cover 13 may have a shape that covers the entire first opening 12.

The first partition wall 14 is coupled to the enclosure 11 and extends along the reference direction D to divide the interior of the enclosure 11 into a first partition space S1 and a second partition space S2. You can.

The second partition wall 15 is disposed perpendicular to the first partition wall 14 inside the enclosure 11 and divides the first partition space S1 into the 1-1 partition space S1-1 and the 1-1 partition space S1. It can be divided into 2 compartment spaces (S1-2). The second partition wall 15 may be removable from the inside of the enclosure 11. This may mean that the second partition wall 15 is detachably coupled to the inside of the enclosure 11.

The third partition wall 16 is disposed orthogonally to the first partition wall 14 inside the enclosure 11 and divides the second partition space S2 into the 2-1 partition space S2-1 and the 2- It can be divided into 2 compartment spaces (S2-2). This may mean that the interior of the case 10 is divided into four spaces in a 2X2 shape. The third partition wall 16 may be removable from the inside of the enclosure 11. This may mean that the third partition wall 16 is detachably coupled to the inside of the enclosure 11.

For example, the length of the 1-1 partition space (S1-1) along the vertical direction corresponds to the length of the 1-2 partition space (S1-2) along the vertical direction, and the 2-1 partition space ( The length of S2-1) along the vertical direction may correspond to the length of the 2-2 partition space S2-2 along the vertical direction. Here, corresponding does not necessarily mean the same case, but will be viewed as a concept that includes cases where there is a certain proportional relationship. As an example, the ratio of the length of the 1-1 partition space (S1-1) along the vertical direction and the length of the 2-1 partition space (S2-1) along the vertical direction is the 1-2 partition space ( The ratio of the length of S1-2) in the vertical direction and the length of the 2-2 partition space S2-2 in the vertical direction may be equal to the ratio. However, it is not necessarily limited to this, and various modifications may be possible depending on needs, such as the size of internal parts and installation space.

In this way, the length of the 1-1 partition space (S1-1) along the vertical direction corresponds to the length of the 1-2 partition space (S1-2) along the vertical direction, and the length of the 1-1 partition space (S1-1) As the length of (S2-1) along the vertical direction corresponds to the length of the 2-2 compartment space (S2-2) along the vertical direction, it becomes easy to remove and install each component, allowing customers such as AS Serviceability can be improved.

The length of the 1-1 partition space (S1-1) along the reference direction (D) may be shorter than the length of the 1-2 partition space (S1-2) along the reference direction (D). The length of the 2-1 partition space (S2-1) along the reference direction (D) may be shorter than the length of the 2-2 partition space (S2-2) along the reference direction (D). The length of the 1-1 partition space (S1-1) along the reference direction (D) may correspond to the length of the 2-1 partition space (S2-1) along the reference direction (D). The length of the 1-2 partition space (S2-1) along the reference direction (D) may correspond to the length of the 1-2 partition space (S1-2) along the reference direction (D).

Let's assume that the length of each space along the vertical direction and the direction perpendicular to the reference direction is the width. The width of the 1-1 partition space (S1-1) may be longer than or equal to the width of the 1-2 partition space (S1-2). The width of the 2-1 partition space (S2-1) may be longer than or equal to the width of the 2-2 partition space (S2-2). The width of the 1-1 partition space (S1-1) may correspond to the width of the 2-1 partition space (S2-1). The width of the 1-2 partition space (S2-1) may correspond to the width of the 2-2 partition space (S2-2).

The width of the 1-1 partition space (S1-1) is longer than or equal to the width of the 1-2 partition space (S1-2), and the width of the 2-1 partition space (S2-1) is the width of the 2-2 partition space. If it is longer than or equal to the width of the space (S2-2), the convenience of removing and installing the product for user service can be increased.

As an example, the first partition space (S1) may be disposed above the second partition space (S2). A water heater 30 may be placed in the 1-1 compartment space (S1-1). A heating heat exchanger 40 may be disposed in the 1-2 partition space (S1-2). An expansion tank 20 may be placed in the 2-1 compartment space (S2-1). A fan 50 may be disposed in the 2-2 partition space (S2-2). In order for the air blown from the fan 50 to be delivered to the heating heat exchanger 40, the 1-2 partition space (S1-2) and the 2-2 partition space (S2-2) of the first partition wall 14 ) A passage through which air can pass may be formed in the portion located between.

Meanwhile, the case 10 may include a contact portion 17. The contact portion 17 may include a first contact area 17a and a second contact area 17b. The first contact area 17a may be an area that contacts the inner surface of the enclosure 11 and extends in the reference direction D. Here, the inner surface of the enclosure 11 may be an inner surface located in a direction perpendicular to the reference direction D and the vertical direction. Ribs may be formed in the first contact area 17a to reinforce rigidity.

The second contact area 17b is an area that protrudes toward the inside of the enclosure 11 from the end of the first contact area 17a in the reference direction (D) and is coupled to both ends of the second partition wall 15. It can be. Both ends of the second partition wall 15 and the second contact area 17b may be screw coupled. However, it is not limited to this, and various modifications such as adhesives and magnets may be possible.

The shape of the contact portion 17 when viewed from above may be similar to an 'L' shape. Additionally, the contact portions 17 may be provided as a pair symmetrical to each other to be coupled to both ends of the second partition wall 15.

Additionally, a guide portion 18 may be formed in the enclosure 11. The guide portion 18 may have a guide groove 18a that is open toward the reference direction D so that both ends of the third partition wall 16 are inserted. The guide portion 18 may be a pair of shapes that are symmetrical to each other. The shape of the guide portion 18 when viewed from above may be similar to an 'L' shape. Additionally, the guide portion 18 may be provided as a pair symmetrical to each other in order to be coupled to both ends of the third partition wall 16. The guide portion 18 may be coupled to a portion of the inner surface of the enclosure 11 adjacent to the second partition space S2.

Both ends of the third partition wall 16 may protrude toward the reference direction (D). As both ends of the third partition wall 16 protrude toward the reference direction D, there is an effect of being accurately guided when inserted into the guide groove 18a. The third partition wall 16 may be screwed to the guide portion 18. However, the combining method is not limited as described above.

A second opening opening upward is formed on the upper side of the enclosure 11, and the case 10 is provided to be coupled to the enclosure 11, and the second opening covers the second opening when coupled to the enclosure 11. Additional covers may be included.

<Expansion tank (20)>

The expansion tank 20 may be provided to store water. Water may come from an external water source. The expansion tank 20 may be formed to accommodate volume changes according to water temperature changes. The expansion tank 20 may be connected to the main flow path 60. The main flow path 60 may be a flow path connecting the expansion tank 20, the water heater 30, and the heating heat exchanger 40. That is, water may flow from the expansion tank 20 through the water heater 30 and into the heating heat exchanger 40. Therefore, the main flow path 60 can penetrate the first partition wall 14. Main flow path packing 68 (FIG. 11) may be disposed in a portion of the first partition wall 14 through which the main flow path 60 passes. The main passage packing 68 can maintain the airtightness of the portion of the first partition wall 14 through which the main passage 60 passes.

The detailed shape of the main passage 60 will be described later.

The expansion tank 20 can accommodate the volume expansion of water flowing along the main flow path 60. The expansion tank 20 may be configured in an open manner.

If a temperature change occurs or water flows in and out while the expansion tank 20 is filled with water, a change in the internal pressure of the expansion tank 20 may also occur. Accordingly, the water contained in the expansion tank 20 can be provided to other components along the main flow path 60.

The expansion tank 20 may be connected to the water inlet pipe (P1). The water inlet pipe (P1) may be provided to connect the expansion tank 20 and a water source outside the case 10 to allow water outside the case 10 to flow into the expansion tank 20. To this end, the water inlet pipe (P1) may penetrate the case (10). For example, the water inlet pipe (P1) may penetrate the wall adjacent to the 2-1 compartment space (S2-1) of the case (10).

A water level sensor may be placed inside the expansion tank 20 to detect the water level inside the expansion tank 20. The water level sensor may be connected to the control unit 80.

<Water heater (30)>

The water heater 30 is a component provided to heat incoming water and discharge it. To heat water, the water heater 30 can cause a combustion reaction and transfer the heat generated from the combustion reaction to the water.

The water heater 30 may include a burner 31 and a heat exchanger 32. The burner 31 causes a combustion reaction. Therefore, the burner 31 can receive fuel and air, and can cause a combustion reaction to occur by forming a flame in the mixture of fuel and air using a spark plug. For this operation, the burner 31 may include a blower that supplies air, a fuel nozzle that injects fuel, and a spark plug that generates a spark for ignition.

The burner 31 may further include a mixing chamber, allowing fuel and air to be mixed in the mixing chamber. Heat and combustion gases are generated through combustion reactions, and these heat and combustion gases can be transferred to water. The fuel may be natural gas used for power generation, including methane, ethane, etc., or it may be oil, but the type is not limited thereto. The flame formed by the combustion reaction generated by the burner 31 may be disposed in the internal space of the combustion chamber located below the burner 31. The combustion chamber may be a wet-type combustion chamber. For example, a water pipe through which water passes may be arranged on the side of the combustion chamber to surround the side of the combustion chamber. In the process of dissipating heat inside the combustion chamber to the outside of the combustion chamber, some of the heat may be transferred to the water in the water pipe.

A heat exchange unit 32 is disposed to transfer the heat generated from the burner 31 to water. The heat exchange unit 32 may be disposed below the burner 31.

Meanwhile, the heat exchange unit 32 may have an integrated heat exchanger structure. The integrated heat exchanger structure may mean a heat exchanger structure in which different types of heat exchange media are distributed. As the heat exchange unit 32 has an integrated heat exchanger structure, the heat exchange unit 32 can have a structure with a lower overall height while maintaining performance compared to a heat exchanger used in a general condensing boiler. Accordingly, although the internal structure of the air heating device 1 is narrow, the overall height of the water heater 30 can be lowered. As a result, various components can be easily placed inside the air heating device 1, and the overall size of the air heating device 1 can be miniaturized.

The heat exchange unit 32 may include a sensible heat exchanger and a latent heat exchanger. The sensible heat exchanger and the latent heat exchanger may be a fin-tube type heat exchanger including fins and a tube through which water flows, or may be a plate-type heat exchanger formed by stacking a plurality of plates, but the types are not limited thereto. . The water flowing into the heat exchanger 32 can be heated through a latent heat heat exchanger and a sensible heat exchanger in that order.

When a sensible heat exchanger and a latent heat exchanger are composed of a fin-tube type heat exchanger, the fins are formed in a plate shape and may be penetrated by a tube. A plurality of fins may be arranged to be spaced apart along the direction in which the tube extends. Combustion gas can flow through the space between fins and fins and tubes, and water can flow through the inside of the tube, allowing heat exchange between water and combustion gas.

The tube may have the shape of a long hole whose internal space is long along the vertical direction in a cross section cut in a plane perpendicular to the direction in which the tube extends. The internal space of the tube may be formed so that the height along the vertical direction in the above-described cross section divided by the width along the front-back direction perpendicular to the vertical direction is greater than 2.

A sensible heat exchanger is provided to receive heat generated by a combustion reaction and heat the water flowing through it. Therefore, the sensible heat exchanger can be placed adjacent to the burner 31. The sensible heat exchanger is not blocked against the flame, and combustion gases can pass through the sensible heat exchanger.

A latent heat heat exchanger is provided to heat water flowing through the inside using the latent heat of combustion gas generated by a combustion reaction. Since the latent heat heat exchanger uses the latent heat of the combustion gas, the heat generated when the moisture contained in the combustion gas condenses and is transferred to the water flowing inside the latent heat heat exchanger. Therefore, the latent heat heat exchanger may be placed after the sensible heat exchanger based on the flow direction of the combustion gas so that the combustion gas whose temperature is lowered by transferring heat to the water from the sensible heat exchanger reaches and condenses. Tubes included in the latent heat exchanger can be placed at different positions along the flow direction of combustion gas to form a plurality of heats.

The sensible heat heat exchanger and the latent heat exchanger may be disposed in the main flow path 60 so that water flows into the sensible heat exchanger through the latent heat exchanger. Therefore, the water can be heated primarily in the latent heat exchanger, then secondarily heated in the sensible heat exchanger, and then transferred to the heating heat exchanger 40, which will be described later.

The water heater 30 may further include a sensible heat insulating pipe outside the sensible heat exchanger. Sensible heat insulated pipe is a pipe in which heating water flows along the inside and contacts the sensible heat exchanger directly or indirectly so as to insulate the sensible heat exchanger.

In the water heater 30, the burner 31, the sensible heat exchanger, and the latent heat exchanger may be arranged in order from the top to the bottom. Therefore, at this time, combustion gas can flow downward. However, the direction is not limited to this.

The heat exchange unit 32 includes a heat exchange housing, and may be configured in such a way that a sensible heat heat exchanger and a latent heat exchanger are disposed therein. Combustion gas passes through the space located inside the heat exchange housing and can exchange heat with water passing through the tubes of each heat exchanger.

Let us call the cross-sectional area of the internal space of the heat exchange housing cut in a plane perpendicular to the flow direction of the combustion gas the reference cross-sectional area. The heat exchange housing may include a tapered area in which the reference cross-sectional area decreases along the flow direction of combustion gas, and a section in which the reference cross-sectional area does not decrease. The reference cross-sectional area at the downstream end of the heat exchange housing may be smaller than the reference cross-sectional area at the upstream end of the heat exchange housing based on the flow direction of the combustion gas. The reference cross-sectional area at the upstream end of the latent heat exchanger may be smaller than the reference cross-sectional area at the downstream end of the sensible heat exchanger based on the flow direction of the combustion gas. Therefore, when combustion gas flows from the sensible heat exchanger side to the latent heat heat exchanger side, the degree to which the flow rate is reduced is smaller than when the standard cross-sectional area is maintained, and condensate located between fins or between tubes can be pushed out. Therefore, the structure of this heat exchange housing can prevent condensate from causing stagnation of combustion gas in the latent heat exchanger, thereby reducing thermal efficiency. The fins of each heat exchanger may be formed to match the shape of the inner space of the heat exchange housing described above.

The order in which water flows from the heat exchanger 32 is explained as follows. Water may first flow into the latent heat exchanger of the heat exchanger 32, and the water may condense water vapor of combustion gas flowing around in the latent heat heat exchanger and be heated by receiving the latent heat generated during this condensation process. Water heated in the latent heat exchanger can be transferred to the sensible heat exchanger and heated in such a way that it receives the heat generated by the combustion reaction. Water heated in the heat exchanger 32 may be transferred to the heating heat exchanger 40. The water delivered to the heating heat exchanger 40 can be cooled by transferring heat to the air passing through the heating heat exchanger 40.

The heat exchange housing may include left and right sides and a flow cap plate covering the left and right sides. The flow cap plate is a plate that includes a flow cap that covers the left and right sides of the heat exchange housing through which the tube passes, forming an internal space with the left and right sides. A plurality of flow path caps and tubes may communicate with each other to form a flow path through which water flows within the heat exchange unit 32. The flow path formed in the heat exchanger 32 by a plurality of flow path caps and tubes may include a parallel section and a series section.

The water heater 30 may include a condensate receiver 37 disposed on the downstream side of the latent heat exchanger along the flow direction of combustion gas. When condensate generated from the latent heat exchanger falls vertically downward due to its own weight, the condensate receiver 37 can collect the condensate.

The condensate receiver 37 may be detachably coupled to the condensate discharge pipe (P3). The condensate receiver 37 may have an inner surface inclined toward the condensate discharge pipe (P3) so that the collected condensate can be discharged through the condensate discharge pipe (P3) extending vertically downward. A condensate trap (T) may be placed in the condensate discharge pipe (P3) to prevent combustion gas from being discharged through the condensate discharge pipe (P3) but to allow condensate to be discharged. The condensate trap (T) may be a ball-type trap and may have a built-in neutralizing agent to neutralize and discharge the condensate.

The condensate discharge pipe (P3) may penetrate the case 10 and be exposed to the outside of the case 10. For example, the condensate discharge pipe (P3) may penetrate the wall adjacent to the 2-1 compartment space (S2-1) of the case (10).

Additionally, the condensate discharge pipe (P3) may penetrate the first partition wall (14). A condensate packing 38 (FIG. 11) may be disposed in a portion of the first partition wall 14 through which the condensate discharge pipe P3 passes. The condensate packing 38 can maintain the airtightness of the portion of the first partition wall 14 through which the condensate discharge pipe P3 passes.

Additionally, the water heater 30 may include an exhaust duct so that residual combustion gases can be discharged simultaneously with condensate discharge. The exhaust duct may be formed in communication with the condensate receiver 37. The exhaust duct is formed to extend vertically upward and discharges the remaining combustion gas to the outside.

A supply opening 33 for supplying external air to the water heater 30 may be formed through the upper wall of the case 10. Air introduced through the air supply port 33 may be provided to the burner 31 of the water heater 30. The combustion gas generated by the combustion reaction of the water heater 30 may be delivered to the gas outlet 34 formed through the upper wall of the case 10 through the exhaust duct and discharged to the outside. Since the combustion gas is located only within the water heater 30 and is discharged through the gas outlet 34, there is no concern that the combustion gas will be mixed with the air supplied to each room.

For example, the supply port 33 and the gas outlet 34 may be formed in an upwardly protruding area of the second opening cover 19 of the case 10. At this time, the upwardly protruding area of the second opening cover 19 may also serve to provide a space that can accommodate the increased height even when the height of the replaced water heater increases when the water heater is replaced. .

Meanwhile, a fuel inlet pipe (P2) for providing fuel to the air heating device 1 may be disposed to penetrate the case 10. For example, the fuel inlet pipe (P2) may penetrate the wall adjacent to the 1-1 compartment space (S1-1) of the case (10). The fuel inlet pipe P2 may be a pipe that connects the water heater 30 and the fuel tank outside the case 10 to allow fuel outside the case 10 to flow into the water heater 30.

The fuel inlet pipe (P2) may be connected to the burner 31 and the venturi (36). The fuel inlet pipe (P2) and the venturi (36) may be connected via the fuel valve (35). As the fuel valve 35 is selectively opened and closed, whether or not fuel is supplied to the burner 31 can be determined. The fuel valve 35 may be electrically connected to the control unit 80.

<Heating heat exchanger (40)>

The heating heat exchanger 40 is a component provided for heat exchange between water and air. The heating heat exchanger 40 may be configured to receive water and exchange heat with air to be discharged for heating. For explanation of the heating heat exchanger, reference may be made to FIG. 8, which will be described later.

The heating heat exchanger 40 may be disposed adjacent to the upper wall of the case 10. The heating heat exchanger 40 may include a heat exchange tube 42 through which water heated by the water heater 30 can flow. The heat exchange tube 42 is formed in a pipe shape so that water flows through the inside and air supplied by the fan 50 flows through the outside, and is arranged to form a winding flow path in the front-back and left-right directions. It can be. The heat exchange tube 42 may be made of a material containing aluminum and copper.

Since the heat exchange tube 42 is made of the same material as described above and is provided so that water flows through the inside, the following effects can be expected. Unlike the piping of a conventional gas furnace, which experiences excessive thermal expansion and contraction as combustion gases and air flow inside and out, which can cause cracks and combustion gas leaks, the risk of cracks occurring is reduced, and even if cracks do occur, Since combustion gases do not leak into the air but only water, safety can be greatly improved. In addition, in the heating heat exchanger 40 of the present invention, heat exchange between water and air occurs through the heat exchange tube 42, so humidity is maintained and air is heated, so a separate humidity control device is not required.

The heat exchange tube 42 may consist of a plurality of layers arranged at different positions along the vertical direction. In the present invention, the heat exchange tube 42 is shown and described as forming four layers, but the number of layers is not limited thereto. Additionally, the heat exchange tube 42 may form four layers, all of which may be connected in series, or may be formed as a mixture of series and parallel connections.

The heat exchange tube 42 may include a straight member 421 extending in the front-back direction and a connecting member connecting ends of adjacent straight members 421 to each other. The connecting member may include a same-layer connecting member 422 and a different layer connecting member 423. A plurality of straight members 421 are arranged along the left and right directions, and a plurality of same-layer connecting members 422 are disposed at the front and rear ends of each straight member 421 to connect the ends of adjacent straight members 421 to form a flow path. can be formed. The plurality of different layer connection members 423 may form a flow path by connecting the ends of the straight members 421 located in adjacent layers. Each connecting member may be formed in a 'U' shape.

The heating heat exchanger 40 may further include a distribution pipe 44. The distribution pipe 44 may be provided to receive water from the water heater 30 and distribute the water to each layer composed of heat exchange tubes 42. The distribution pipe 44 may include a distribution delivery pipe 441 and a distribution head 442. The distribution delivery pipe 441 is connected to the main flow path 60 and receives heated water through the heat exchanger 32, and the water flows in the distribution head 442 connected to the distribution delivery pipe 441. The distribution head 442 may extend in the left and right directions and be connected to a plurality of straight members 421. Therefore, a parallel flow path composed of a plurality of partial flow paths with common inlets and outlets can be formed by the distribution head 442. Here, the inlet of the parallel flow path may be the distribution head 442. The entire flow path formed by the heat exchange tube 42 may include a section consisting of the above-described parallel flow paths.

At this time, the straight members 421 to which the distribution head 442 is connected may be the straight members 421 located at the uppermost layer among the layers formed by the heat exchange tube 42. Water is delivered to the uppermost layer of the heat exchange tube 42, and water flows along each layer formed by the heat exchange tube 42 to the lowest layer. In this process, water can transfer heat to the air passing around the heat exchange pipe. That is, the direction in which the air supplied by the fan 50 within the heating heat exchanger 40 flows is upward, and the overall direction in which the water moves is downward, forming a counter-flow structure. You can have it.

The heating heat exchanger 40 may further include a collection pipe 45 that returns water that has completed heat transfer to the air to the water heater 30. The collection pipe 45 may include a collection transmission pipe 451 and a collection head 452. A heat exchange tube 42 is connected to the collecting head 452, and cooled water is delivered to the collecting head 452. The collection head 452 is connected to the collection delivery pipe 451, so that cooled water can be delivered to the recovery passage 70 connected to the collection delivery pipe 451. The assembly head 452 may extend in the left and right directions and be connected to a plurality of straight members 421. Therefore, the collecting head 452 becomes the outlet of the parallel flow path, and the parallel flow path terminates at the collecting head 452, so water can collect in the collecting head 452. At this time, the straight parts to which the collection head 452 is connected may be straight parts located in the lowest layer among the layers formed by the heat exchange tube 42.

The heating heat exchanger 40 crosses the heat exchange tube 42 and may have a plurality of heat transfer fins 43 penetrated by the heat exchange tube 42. The heat conduction fins 43 are formed in a plate shape orthogonal to the front-to-back direction, and are arranged along the front-to-back direction to better transfer the heat of the water flowing inside the heat exchange tube 42 to the surrounding air. Air may pass between the heat exchange tube 42 and the heat transfer fins 43 along the upper side. The heat conduction fins 43 and the heat exchange tube 42 may be fixed by the heating heat exchange housing 41. The heat conduction fins 43 may be disposed within the heating heat exchange housing 41. The heating heat exchange housing 41 may be fixed to the case 10.

<Fan (50)>

The fan 50 is provided to send air to the heating heat exchanger 40. The fan 50 is disposed below the heating heat exchanger 40 to send air upward and pass through the heating heat exchanger 40, and the outlet through which the air is discharged may be disposed to face upward. The fan 50 includes components such as a motor and blades and may be electrically connected to the control unit 80. Therefore, as the fan 50 is electrically controlled and operated, the motor rotates the blades and air can be supplied. The fan 50 may include an impeller and the like to pump air.

The length of the fan 50 along the reference direction (D) may be shorter than the length of the 2-1 partition space (S2-1) along the reference direction (D). Additionally, the length of the fan 50 along the vertical direction may be shorter than the length of the 2-1 partition space S2-1 along the vertical direction. An empty air supply space may be formed between the fan 50 and the heating heat exchanger 40 in the internal space of the case 10.

The air circulation process from the fan 50 is explained as follows. Air introduced into the fan 50 may be blown upward. The supplied air passes through the heating heat exchanger (40). As air passes through the heating heat exchanger 40, it may be heated by receiving heat from the water passing through the heating heat exchanger 40. Heated air is discharged to the outside of the case 10 and can be sent to each room of the house through the duct 3. Air sent to each room or cold air introduced into the house from the outside may flow back into the case 10 and enter the inlet of the fan 50.

Below, the main passage 60 and the recovery passage 70 that connect each component to each other will be described in detail. The main flow path 60 may refer to a flow path connecting the expansion tank 20, the water heater 30, and the heating heat exchanger 40. The recovery passage 70 connects the heating heat exchanger 40 and the first portion 61 of the main passage 60, which will be described later, to transfer water flowing into the heating heat exchanger 40 to the first portion 61. It may mean a guiding euro. Therefore, the recovery passage 70 can penetrate the first partition wall 14. Meanwhile, a flow path may mean that the inner parts of components through which fluid can flow are connected by pipes or hoses through which fluid can flow, forming a path through which fluid flows.

<Main Euro (60)>

The main passage 60 may include a first part 61 and a second part 62. The first part 61 may be a part extending downward from the expansion tank 20. The first part 61 may be a part for draining the expansion tank 20. A filter unit 63 may be disposed in the first part 61. The filter unit 63 may be disposed in the first part 61 to filter water passing through the first part 61.

The second part 62 is in communication with the first part 61 and the expansion tank 20, extends from the expansion tank 20, and has one end extending upward to be connected to the water heater 30. . A pump unit 64 may be disposed in the second part 62. The pump unit 64 may be disposed in the second part 62 to pump water passing through the second part 62 to the water heater 30. For example, the second part may have a U-shaped shape. Here, the U-shaped shape means that there is similarity in the shape of the upward opening, and does not necessarily mean that the lengths of both sides extending upward are the same.

The pump unit 64 may be electrically connected to the control unit 80. The pump unit 64 may be a variable capacity pump that can change the pressure applied to water. Therefore, the control unit 80 can control the pump unit 64 to change the flow rate of water flowing along the main flow path 60.

Meanwhile, a tube-shaped through hole extending upward and downward may be formed in the expansion tank 20. The second part 62 may have a shape that penetrates the through hole of the expansion tank 20. To summarize, the second part 62 has a shape that penetrates the through hole of the expansion tank 20, and can be connected to the water heater 30 at one end. Additionally, the other end may be in communication with the expansion tank (20). A U-shaped tube may be formed between one end and the other end of the second part 62.

Hereinafter, components that may be additionally provided will be described in detail. Additional components that may be provided may be a control unit 80 and an airtight unit 90.

<Control unit (80)>

The control unit 80 is provided to control the temperature of water that passes through the main flow path 60, the heating heat exchanger 40, and is returned to the water heater 30. The control unit 80 may include a processor and memory. A processor is a component that includes elements capable of logical operations that perform control commands, and may include a CPU (Central Processing Unit). The processor is connected to various components and can perform control by transmitting signals according to control commands to each component, and can be connected to various sensors or acquisition units to receive acquired information in the form of signals. Accordingly, in Embodiment 1 of the present invention, the processor can be electrically connected to various components included in the air heating device 1. Since the processor can be electrically connected to each component, it can communicate with each other by connecting with a conductive wire or by further having a communication module capable of wireless communication.

The processor is electrically connected to each component of the integrated air heating device (1) according to Embodiment 1 of the present invention, performs calculations using the received information, and transmits control signals, so that each component is maintained in an optimal condition. It can be controlled, and each component can work automatically in conjunction with each other. In addition, due to the integrated interlocking control of the processor, information or control data obtained from circulating water and air is acquired, integrated, and controlled in real time, as will be described later, so that even efficiency can be maintained and the optimal setting suitable for the entire system is automatically selected. can do.

Control commands performed by the processor can be stored and utilized in memory. Memory may be a device such as a hard disk drive (HDD), solid state drive (SSD), server, volatile media, or non-volatile media, but the type is not limited thereto. In addition, data necessary for the processor to perform tasks may be stored in the memory.

The control unit 80 may be placed in the 2-1 partition space (S2-1). A manipulation unit 81 including a display and buttons that can be operated by a user to operate the control unit 80 may be disposed on the first opening cover 13 .

The control unit 80 can control the water temperature of the returned water by controlling the flow rate of water flowing in the main flow passage 60. If the flow rate of water flowing in the main flow path 60 is controlled to decrease, water will flow in the heating heat exchanger 40 for a longer time than otherwise, and a large amount of heat can be transferred to the air, and the water will be recovered. The water temperature will decrease. Conversely, when the flow rate of water flowing in the main flow path 60 is controlled to increase, the temperature of the returned water will increase compared to the other case.

The control unit 80 is electrically connected to the burner 31 and can control the amount of heat transferred to the water. The burner 31 may include a blower that blows air to mix fuel and air and use it for combustion. The control unit 80 controls the speed at which the blower rotates to provide air to the flame generating area. The flow rate can be adjusted.

As the flow rate of air is adjusted, the amount of heat generated by the combustion reaction in the water heater 30 can be adjusted. Therefore, the air heating device 1 according to Example 1 of the present invention can have a high turndown ratio of 6:1 to 10:1, making it suitable for operating situations with different loads such as low load operation and high load operation. The effect of maintaining constant efficiency can be expected by adjusting the amount of heat or the flow rate of water.

Meanwhile, an external interlocking controller 82 (FIG. 13) may be further disposed in the 2-1 partition space (S2-1). The external interlocking controller 82 may be disposed adjacent to the first opening cover 13 of the case 10. The external interlocking controller 82 can exchange data with devices located outside the air heating device, such as a thermostat in a house. The external interlocking controller 82 can transmit data obtained from externally located devices to the control unit 80. The control unit 80 may perform the above-described controls based on data received from the external interlocking controller 82.

<Confidentiality Department (90)>

Figure 5 is a diagram showing a cross-section of the airtight portion and the second partition and an enlarged view of the cross-section. The airtight portion 90 is disposed between the second partition wall 15 and the enclosure 11 to maintain airtightness between the 1-1 partition space (S1-1) and the 1-2 partition space (S1-2). It can be arranged to maintain. The airtight portion 90 may be made of EPDM (Ethylene-Propylene Diene Monomer).

The airtight portion 90 may include an airtight member 91 and a protruding member 92. The airtight member 91 may surround the edge of the second partition wall 15. For example, a protruding area extending in a direction opposite to the reference direction D may be formed at the edge of the second partition wall 15, and the airtight member 91 may be provided to surround the protruding area. In order to surround the protruding area, the airtight member 91 may have an area similar to a 'C' shape in cross section. This may mean that the airtight member 91 has an area open toward the reference direction (D). Additionally, the airtight member 91 may have a region where the thickness changes.

For example, a case where the protruding area is formed to extend from the edge of the second partition wall 15 along the reference direction D may be considered. At this time, the airtight member 91 has an area that is open toward the direction opposite to the reference direction (D). In this case, when assembling the second partition wall 15, the second partition wall is assembled along the direction opposite to the reference direction, so in the process, the airtight member 91 surrounding the protruding area is affected by the friction force generated in the reference direction. There is a risk that it may be removed.

The air heating device according to the present invention has a protruding area extending from the edge of the second partition wall 15 in a direction opposite to the reference direction (D), so that the airtight member 91 extends in the reference direction (D). There is an area open towards the When assembling the second partition wall 15, it is assembled along a direction opposite to the reference direction D, so the risk of disassembly during the assembly process can be reduced.

The protruding member 92 protrudes to the outside of the airtight member 91 and may be in contact with the enclosure 11. The protruding member 92 may have a tapered shape along the direction in which the protruding member 92 extends. For example, when the protruding member 92 is cut into a cross section parallel to the reference direction D, the shape viewed from the protruding member 92 may be tapered along the direction in which the protruding member 92 extends.

The protrusion member 92 may include a first protrusion 92a and a second protrusion 92b. The second protrusion 92b may be spaced apart from the first protrusion 92a along the reference direction D and may extend in a direction transverse to the direction in which the first protrusion 92a extends.

As the air heating device (1) according to Embodiment 1 of the present invention includes an airtight portion (90), carbon monoxide and harmful substances that may be generated due to burnout of internal parts in the water heater (30) are removed from the air heating device (1). It can have the effect of preventing it from remaining inside or transferring to the space where the heating heat exchanger 40 is located and being included in the air supplied indoors.

The air heating device 1 according to Embodiment 1 of the present invention is modularized so that each part can be separated from each other to facilitate repair of internal parts. Below, the features of the present invention that can bring about such effects will be described in detail. Separation of each part may occur together with separation of the second partition wall 15 and the third partition wall 16. Separation of the first opening cover 13 may precede separation of the second partition wall 15 and the third partition wall 16.

Figure 6 is an enlarged view showing the second partition wall and the heating heat exchanger separated. Figure 7 is an enlarged view showing the second partition wall and the heating heat exchanger combined. Figure 8 is a view showing the second partition wall separated from the enclosure. Figure 9 is a view showing the heating heat exchanger separated from the enclosure. Figure 10 is an enlarged view of the lower and lower sides of the 1-1 compartment space. Figure 11 is an enlarged view of the first partition wall viewed from the reference direction. For reference, in each drawing, some components, such as an enclosure, may be omitted for convenience of illustration.

<Structure for separation of the second partition wall (15)>

Hereinafter, the structure for separating the second partition wall 15 will be described in detail. The second partition wall 15 may be detachably coupled to the reference direction (D) side of the heating heat exchanger (40). In addition, the water heater 30 is connected to the reference direction (D) side of the second partition wall 15, so that when the second partition wall 15 is separated from the enclosure 11, the second partition wall 15 ) can be separated together.

For example, a penetration hole 15' may be formed in the second partition wall 15. The penetration hole 15' may be penetrated along the reference direction (D). The penetration holes 15' may be formed as a pair. Here, a pair does not necessarily require that the two penetration holes 15' have corresponding shapes or positions.

Heating heat exchanger 40 may include a penetrating member 46. A portion of the penetrating member 46 may be provided to penetrate the penetrating hole 15'. The penetrating member 46 may include a penetrating region 46' and a support region 46''. The penetration area 46' may extend in the reference direction D and penetrate the penetration hole 15'. The support area 46'' may be formed on a side of the penetration area 46' opposite to the reference direction D. When the support area 46'' is viewed along the reference direction D, the edge of the penetration hole 15' may be disposed on the inside. This may mean that even if the penetrating member 46 is moved in the reference direction D, the penetrating member 46 is not moved because it is caught by the support area 46''. The second partition wall 15 may be screw-connected to the support area 46''. However, the coupling method is not limited to the screw coupling method, and various modifications such as adhesives and magnets may be possible.

The support area 46'' may include a cushioning portion and a rigid portion. The buffer portion may be a portion whose volume changes due to pressure as it comes into contact with the second partition wall 15 when the penetrating member 46 moves in the reference direction D. As an example, the cushioning portion may be expanded urethane foam. However, it is not limited to this, and various modifications may be possible within the range where the volume can change. The buffer portion is pressurized to reduce its volume and can play a role in maintaining the airtightness of the penetration hole 15'.

The rigid portion may be coupled to the side opposite to the reference direction (D) of the buffer portion to support the buffer portion on the side opposite to the reference direction (D) of the buffer portion. The rigid portion may be formed of a metal material.

Meanwhile, the penetrating member 46 may include an inlet penetrating member 46a and an outlet penetrating member 46b. The inflow penetrating member 46a may be provided to penetrate one of the pair of penetrating holes 15' and be connected to the main flow path 60. Additionally, the inflow penetrating member 46a may be connected to the distribution transmission pipe 441.

The discharge penetrating member 46b may be provided to penetrate the other one of the pair of penetrating holes 15' and be connected to the recovery passage 70. The discharge penetrating member 46b may be connected to the collective transmission pipe 451.

When the second partition wall 15 is separated, the heating heat exchanger 40 that was hidden by the second partition wall 15 is exposed. The user may move the exposed heating heat exchanger 40 along the reference direction (D) in order to repair the heating heat exchanger 40.

For example, a first sliding groove extending along the reference direction D may be formed in a portion of the enclosure 11 adjacent to the first-2 partition space S1-2. The heating heat exchanger 40 may include a first sliding portion 47 (FIG. 9) slidably inserted into the first sliding groove along the reference direction D. Through this engaging structure, the heating heat exchanger 40 can be separated from the enclosure 11 by sliding along the reference direction D after the second partition wall 15 is separated from the enclosure 11.

Meanwhile, in order to separate the second partition wall 15, the main flow path 60, the recovery flow path 70, and the condensate discharge pipe (P3) penetrating the first partition wall 14 must be separated. Hereinafter, the structure for separating the main flow path 60, the recovery flow path 70, and the condensate discharge pipe (P3) will be described in detail in order.

The main passage 60 may include a first adapter 65. The first adapter 65 may be an adapter that connects the top of the second part 62 and the water heater 30 to each other. In order to separate the second partition wall 15, the upper ends of the first adapter 65 and the second portion 62 may be separated from each other.

The recovery passage 70 may include an upper portion 71, a lower portion 72, and a second adapter 73. The upper part 71 may refer to a part located above the first partition wall 14. The lower portion 72 may refer to a portion located below the first partition wall 14. The second adapter 73 may be an adapter that penetrates the first partition wall 14 and connects the upper portion 71 and the lower portion 72 to each other. In order to separate the second partition wall 15, the second adapter 73 and the upper portion 71 can be separated from each other.

The condensate discharge pipe (P3) may be separated from the condensate receiver (37) in order to separate the second partition wall (15).

Meanwhile, in order to separate the second partition wall 15, the water remaining in the main flow path 60, the recovery flow path 70, and the condensate discharge pipe (P3) must be discharged. Hereinafter, the structure for discharging water in the main flow path 60, the recovery flow path 70, and the condensate discharge pipe (P3) will be described in detail in order.

The main flow path 60 may include a drain portion 66 and a drain valve 67. The drain portion 66 may be connected to the lower side of the first portion 61. The drain portion 66 may be disposed lower than the connection point between the first portion 61 and the recovery passage 70.

The drain portion 66 may extend perpendicular to the first portion 61, but is not limited thereto, and may extend parallel to the first portion 61 or in a direction transverse to the direction in which the first portion 61 extends. It may be extended. The first part 61 and the outside of the first part 61 may be communicated with each other through the drainage part. The outside of the first part 61 may be the internal space of the case 10 or the outside of the case 10.

The drain valve 67 may be provided to open and close the drain portion 66. When the drain valve 67 opens the drain portion 66, the water in the expansion tank 20, the water in the main flow passage 60, and the water in the recovery passage 70 are all discharged through the drain portion 66. You can. The drain valve 67 may be a ball valve.

Discharge at this time may occur directly through the drain portion 66, or may be discharged by connecting a separate hose to the drain portion 66.

In the case of the condensate discharge pipe (P3), unlike the main flow path (60) and the recovery flow path (70), it is not always filled with water, so separate drainage may not be necessary. Even if necessary, if the condensate discharge pipe (P3) is separated from the condensate receiver (37), condensate can be discharged through the inclined surface of the condensate receiver (37).

<Method of separating the second partition wall (15)>

Below, a method of separating the second partition wall 15 will be described in detail based on the above-mentioned contents. The second partition wall separation method may be one of the methods of disassembling the air heating device 1.

The air heating device disassembly method may include a cover separation step, a flow path water discharge step, and a second partition wall separation step. The cover separation step may be a step of separating the first opening cover 13 of the case 10 of the air heating device 1. The flow path water discharge step may be a step of discharging water in the main flow path 60 and the recovery flow path 70. The step of separating the second partition wall 15 may be a step of separating the second partition wall 15 to which the water heater 30 is coupled from the enclosure 11 of the case 10.

In the cover separation step, the first opening cover 13 can be separated. As the first opening cover 13 is separated, the first opening 12 is opened, and the water heater 30 and the second partition wall 15 are exposed when viewed from the reference direction D side. At this time, the second opening cover 19 may also be removed if necessary.

The channel water discharge step is a process of opening the drain part 66 by operating the drain valve 67, and the water of the main flow path 60 and the recovery channel 70 through the drain part 66. A flow path discharging water may include a drainage process. When the drain valve 67 is opened, the water in the expansion tank 20, the water in the main passage 60, and the water in the recovery passage 70 can all be discharged through the drain portion 66.

The second partition wall separation step may be a step of separating the second partition wall 15 from the enclosure 11. To separate the second partition wall 15, the first adapter 65 may be separated from the upper end of the second part 62. Additionally, the second adapter 73 may be separated from the upper portion 71. Additionally, the condensate discharge pipe (P3) can be separated from the condensate receiver (37). Additionally, the main flow path 60 may be separated from the inflow penetrating member 46a. Additionally, the recovery passage may be separated from the discharge penetrating member 46b. Additionally, the second partition wall 15 may be separated from the support area 46''. Additionally, both ends of the second partition wall 15 may be separated from the second contact area 17b. When the above-mentioned separation is completed, the second partition wall 15 may be pulled along the reference direction D and separated from the enclosure 11.

Since the second partition wall 15 is easily separated, the water heater 30 can be conveniently repaired, and reassembly after repair can also be easily performed. In addition, when the second partition wall 15 is separated, the heating heat exchanger 40 is exposed, so it can be easy to repair the heating heat exchanger 40, or it can be separated by sliding along the reference direction for repair. . If fastening, such as a screw connection, exists between the heating heat exchanger 40 and the enclosure 11 before separation, separation of the fastening may be preceded.

<Structure for separation of the third partition wall (16)>

Hereinafter, the structure for separating the third partition wall 16 will be described in detail. The third partition wall 16 may be detachably coupled to a portion of the enclosure 11 located on the reference direction (D) side of the fan 50.

Figure 12 is an enlarged view of the lower side of the 2-1 compartment space. Figure 13 is a view showing the third partition wall separated from the enclosure. Figure 14 is a diagram showing the fan separated from the enclosure. For reference, in each drawing, some components, such as an enclosure and a control unit, may be omitted for convenience of illustration.

The expansion tank 20 may be connected to the reference direction (D) side of the third partition wall (16). Meanwhile, the third partition wall 16 is provided for electrical connection of the expansion tank 20, the above-described condensate trap (T), the control unit 80, the operation unit 81, the external interlocking controller 82, and the control unit 80. Parts, including the harness, can be joined together. For convenience of explanation, the above-mentioned parts, including the expansion tank 20, are collectively referred to as a water module. As shown in FIG. 12, when the third partition wall 16 is separated from the enclosure 11, the water module may be separated together with the third partition wall 16.

When the third partition wall 16 is separated, the fan 50 that was hidden by the third partition wall 16 is exposed. The user may move the exposed fan 50 along the reference direction (D) in order to repair the fan 50.

For example, a second sliding groove extending along the reference direction D may be formed in a portion of the enclosure 11 adjacent to the 2-2 partition space S2-2. The fan 50 may include a second sliding portion 51 slidably inserted into the second sliding groove along the reference direction D. Through this engaging structure, the fan 50 can be separated from the enclosure 11 by sliding along the reference direction D after the third partition wall 16 is separated from the enclosure 11.

Meanwhile, in order to separate the third partition wall 16, the main flow path 60, the recovery flow path 70, and the condensate discharge pipe (P3) penetrating the first partition wall 14 must be separated. In the case of the main flow path 60, separation of the main flow path may occur through separation of the above-described second part 62 and the first adapter 65. Additionally, in the case of the recovery passage 70, separation may occur through separation of the second adapter 73 and the lower portion 72. Additionally, in the case of the condensate discharge pipe (P3), separation may occur through separation of the condensate receiver (37) and the condensate discharge pipe (P3) described above.

Meanwhile, in order to separate the third partition wall 16, the water remaining in the expansion tank 20, the main flow path 60, and the recovery flow path 70 must be discharged. Hereinafter, the structure for discharging water from the expansion tank 20, the main passage 60, and the recovery passage 70 will be described in detail. The case of the condensate discharge pipe (P3) has been described above, so it is omitted.

As described above, the main flow path 60 may include a drain portion 66 and a drain valve 67. Since the expansion tank 20 is connected to the main flow path 60, draining of the expansion tank 20 and draining of the main flow path 60 can occur simultaneously.

When the drain valve 67 opens the drain portion 66, the water in the expansion tank 20, the water in the main flow passage 60, and the water in the recovery passage 70 are all discharged through the drain portion 66. You can.

Discharge at this time may occur directly through the drain portion 66, or may be discharged by connecting a separate hose to the drain portion 66.

<Method of separating the third partition wall (16)>

Below, a method of separating the third partition wall 16 will be described in detail based on the above-mentioned contents. The third partition wall separation method may be one of the methods of disassembling the air heating device 1.

The air heating device disassembly method may include a cover separation step, a tank water discharge step, and a third partition wall separation step. The cover separation step may be a step of separating the first opening cover 13 of the case 10 of the air heating device 1. The tank water discharge step may be a step of discharging water in the expansion tank 20 of the air heating device 1. In the tank water discharge step, water from the main flow path 60 and the recovery flow path 70 may also be discharged. The third partition wall 16 separation step may be a step of separating the third partition wall 16 to which the expansion tank 20 is coupled from the enclosure 11 of the case 10.

In the cover separation step, the first opening cover 13 can be separated. As the first opening cover 13 is separated, the first opening 12 is opened, and the expansion tank 20 and the second partition wall 15 are exposed when viewed from the reference direction D.

The tank water discharge step includes a drain part 66 opening process of opening the drain part 66 by operating the drain valve 67 and a tank drain process of discharging water from the expansion tank 20 through the drain part 66. may include. When the drain valve 67 is opened, the water in the expansion tank 20, the water in the main passage 60, and the water in the recovery passage 70 can all be discharged through the drain portion 66.

The third partition wall separation step may be a step of separating the third partition wall 16 from the enclosure 11. To separate the third partition wall 16, the first adapter 65 may be separated from the upper end of the second part 62. Additionally, the second adapter 73 may be separated from the lower portion 72. Additionally, the condensate discharge pipe (P3) can be separated from the condensate receiver (37). Additionally, the third partition wall 16 can be separated from the guide portion 18. When the above-mentioned separation is completed, the third partition wall 16 can be pulled along the reference direction D and separated from the enclosure 11.

<Structure for changing layout>

Additionally, the air heating device 1 according to Embodiment 1 of the present invention has the effect of allowing its arrangement to be freely changed. Free arrangement may mean that the position of the component protruding out of the case 10 can be changed. Hereinafter, a structure for changing the position of a component protruding outward from the case 10 will be described in detail. The configuration protruding outward may include a fuel inlet pipe (P2), a water inlet pipe (P1), and a condensate discharge pipe (P3).

FIG. 15 is a diagram illustrating a case where the water inlet pipe, fuel inlet pipe, and condensate discharge pipe are arranged opposite to the arrangement in FIG. 3.

One inlet hole H1 may be formed on each side wall of the case 10 in the vertical direction and in both directions perpendicular to the reference direction D. The water inlet pipe (P1) may pass through one of a pair of inlet holes (H1) of the case 10. The other inlet hole (H1) through which the water inlet pipe (P1) is not penetrated may be covered by a stopper.

Additionally, one fuel inlet hole (H2) may be formed on each side wall of the case 10 in the vertical direction and in both directions orthogonal to the reference direction (D). The fuel inlet pipe (P2) may pass through one of a pair of fuel inlet holes (H2) of the case 10. The other fuel inlet hole (H2) through which the fuel inlet pipe (P2) is not penetrated may be covered by a stopper.

In addition, one condensate discharge hole (H3) may be formed on each side wall of the case 10 in the vertical direction and in both directions orthogonal to the reference direction (D). If the reference direction D is forward, the walls in both directions may be the left and right walls. The condensate discharge pipe (P3) may pass through any one of the pair of condensate discharge holes (H3). Other condensate discharge holes (H3) through which the condensate discharge pipe (P3) is not penetrated may be covered by a stopper.

For example, when the wall is located on the left side of the case 10, the condensate discharge pipe (P3), water inlet pipe (P1), and fuel inlet pipe (P2) are formed on the left side, which may cause inconvenience in arrangement. In this case, the condensate discharge pipe (P3), water inlet pipe (P1), and fuel inlet pipe (P2) can be passed through the condensate discharge hole (H3), inlet hole (H1), and fuel inlet hole (H2) located on the right side. . Additionally, if the case 10 is later moved to a case where the wall is located on the right side of the case 10, the condensate discharge pipe (P3), water inlet pipe (P1), and fuel inlet pipe (P2) may be moved in the opposite direction. . This can be understood as moving from the state of FIG. 3 to FIG. 15 or vice versa.

<Water replenishment structure>

The air heating device 1 according to Embodiment 1 of the present invention can replenish water in the expansion tank 20 without removing the first opening cover 13. Below, the structure having this effect will be described in detail.

Figure 16 is a view showing the covering cover removed. Figure 17 is a view showing the opening and closing member separated. Figure 18 is a diagram showing water flowing into the expansion tank through the communication part.

A communication portion 100 may be formed in the first opening cover 13. However, it is not limited to this, and a method in which the communication part 100 is formed in the enclosure 11 is also possible. The communication part 100 connects the expansion tank 20 and the outside to each other and may be opened to guide water from the outside to the expansion tank 20.

A communication member 110 and an opening/closing member 120 may be disposed in the communication unit 100. The communication member 110 may be configured to connect the expansion tank 20 and the outside so that the expansion tank 20 and the outside communicate with each other, and to inject external water into the expansion tank 20. For this purpose, one end of the communication member 110 may be connected to the expansion tank 20. The opening and closing member 120 may be provided to open and close an end located on the outer side of the communication member 110. For example, the opening and closing member 120 may be in the form of a lid used for general beverages.

An overflow pipe may be connected to the expansion tank 20 to discharge water that overflows from the expansion tank 20. The location where the overflow pipe is connected to the expansion tank 20 may be located lower than the location where the communication member 110 and the expansion tank 20 are connected. Therefore, if more water than necessary is injected into the expansion tank 20, it may be discharged through the overflow pipe.

Meanwhile, the shapes of the communication part 100, the communication member 110, and the opening and closing member 120 may have various modifications within the scope for allowing external water to flow into the expansion tank 20.

As an example, a communication part 100 in the form of an opening may be formed in the first opening cover 13. In this case, the communication member 110 may not protrude from the first opening cover 13 based on the reference direction D. In this case, a separate cover C may be formed to cover the communication part 100.

As another example, the communication part 100 is formed in an opening shape, and the communication member 110' may penetrate the communication part 100. The communication member 110' may include an external protruding area 111', which is an area protruding to the outside of the case 10. Figure 19 is a diagram showing another example of a communication member. Figure 20 is a diagram showing water flowing into an expansion tank through another example of a communication part. In this case, the external protruding area 111' may be open upward.

Meanwhile, in order for water introduced into the communication member 110' to flow into the expansion tank 20 without a separate power source, an inclined area may be formed in the communication member 110'. The inclined area may have a shape inclined upward when viewed from the expansion tank 20.

<Water supply method>

Below, based on the above-mentioned contents, a method of supplying water to the air heating device 1 into the expansion tank 20 will be described in detail. In detailing the air heating device water supply method, reference may be made to the above-described FIGS. 16 to 20.

The air heating device water supply method may include an opening step and an injection step. The opening step may be a step of opening the communication portions 100 and 100' of the case 10 of the air heating device 1. For example, the opening step may be a step of separating the opening and closing members (120, 120') from the communicating members (110, 110') and opening the ends of the communicating members (110, 110') located on the outer side of the case 10. there is. The injection step may be a step of injecting water into the expansion tank 20 of the air heating device 1 through the communication portions 100 and 100'.

Meanwhile, a water level sensor may be placed within the expansion tank 20. The water level detected through the water level sensor may be displayed through the display of the measuring unit 81, etc. Additionally, the control unit 80 may generate a notification, such as a warning sound, to the user based on the water level obtained by the water level sensor. For example, when the level of water acquired by the water level sensor ranges from level 1, which is the lowest water level, to level 5, which is the highest water level, the control unit 80 may generate a notification for water replenishment to the user in level 2. . In this case, the user can recognize that water replenishment is necessary through a notification and can replenish water.

The air heating device according to the present invention can generate a notification to the user to replenish water before the water level reaches the lowest level, thereby preventing the problem of equipment stopping due to the water level.

Example 2

Figure 21 is a view showing the air heating device 1 according to Embodiment 2 of the present invention with the enclosure removed. Hereinafter, the air heating device according to Example 2 will be described in detail based on FIG. 21 and the above-described contents. The air heating device according to Example 2 is different from the air heating device 1 according to Example 1 in that the positions of the fan 50 and the heating heat exchanger 40 are changed. It can be understood that the air heating device 1 according to Example 1 is of an upflow type, while the air heating device according to Example 2 is of a downflow type. Configurations that are the same as or equivalent to those of the air heating device according to Example 1 are assigned the same or equivalent reference numerals, and detailed descriptions are omitted.

A water heater 30 may be disposed in the 1-1 compartment space (S1-1') of the air heating device according to Example 2. A fan 50 may be disposed in the 1-2 partition space (S1-2') of the air heating device 1 according to Example 2. An expansion tank 20 may be disposed in the 2-1 compartment space (S2-1') of the air heating device according to Example 2. A heating heat exchanger 40 may be disposed in the 2-2 compartment space (S2-2') of the air heating device according to Example 2. As the positions of the heating heat exchanger 40 and the fan 50 change, the shapes of other components, including the main flow path 60 (FIG. 3) and the recovery flow path 70 (FIG. 3), may change correspondingly.

Example 3

Figure 22 is a view showing the air heating device according to Example 3 of the present invention with the enclosure removed. Hereinafter, the air heating device according to Example 3 will be described in detail based on FIG. 22 and the above-described contents. The air heating device according to Example 3 differs from the air heating device 1 according to Example 1 in that the first compartment space is disposed on the side of the second compartment space. Configurations that are the same as or equivalent to those of the air heating device according to Example 1 are assigned the same or equivalent reference numerals, and detailed descriptions are omitted.

The first partition space S1' may be arranged in a direction perpendicular to the vertical direction and the reference direction D of the second partition space S2'. When the reference direction D is forward, the first compartment S1' may be placed on either the left or right sides of the second compartment S2'. A water heater 30 may be disposed in the 1-1 compartment space (S1-1'') of the air heating device according to Example 3. One of the heating heat exchanger 40 and the fan 50 may be disposed in the first-2 compartment space (S1-2'') of the air heating device according to Example 3. An expansion tank 20 may be disposed in the 2-1 compartment space (S2-1'') of the air heating device according to Example 3. Another one of the heating heat exchanger 40 and the fan 50 may be disposed in the 2-2 compartment space (S2-2'') of the air heating device according to Example 3. As the overall arrangement of the water heater 30, heating heat exchanger 40, expansion tank 20, and fan 50 changes, the shapes of other components, including the main flow path 60 and the recovery flow path 70, change accordingly. It can be changed accordingly.

For example, in the air heating device 1 of Example 1, condensate is discharged through the condensate discharge pipe P3 that passes through the first partition wall 14 and passes through the 2-1 partition space S2-1. Alternatively, in the case of the air heating device of Example 3, the condensed water is discharged directly below the water heater 30 and passes through a separate trap located below the water heater 30.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

1: Air heating device
2: condenser
3: Duct
4: Heater
10: Case
11: Enclosure
12: first opening
13: first opening cover
14: first partition wall
15: second partition wall
15': penetration hole
16: Third partition wall
17: contact part
17a: first contact area
17b: second contact area
18: Guide part
18a: Guide groove
19: second opening cover
20: Expansion tank
30: water heater
31: burner
32: heat exchange unit
33: Supply port
34: Gas outlet
35: Fuel valve
36: venturi
37: Condensate collection
38: Condensate packing
40: Heating heat exchanger
41: Heating heat exchange housing
42: heat exchange tube
43: Electric heating pin
44: Distribution pipe
45: Collection pipe
46: Penetrating member
46': penetration area
46'': support area
46a: Inflow penetrating member
46b: Discharge penetrating member
47: first sliding portion
50: fan
51: second sliding portion
60: Main Euro
61: first part
62: Second part
63: Filter unit
64: Pump part
65: first adapter
66: Drainage part
67: drain valve
68: Main Euro Packing
70: Recovery path
71: upper part
72: lower part
73: second adapter
80: control unit
81: Control panel
82: External interlocking controller
90: Confidentiality Department
91: Absence of confidentiality
92: Protruding member
92a: first projection
92b: second protrusion
100: Communication part
110: Communication member
111: External protruding area
120: Opening and closing member
421: Straight member
422: Same floor connection member
423: Different floor connection member
441: Distribution transmission pipe
442: Distribution head
451: Collective transmission tube
452: assembly head
C: Cover for hiding
D: reference direction
H1: Inlet hole
H2: Fuel inlet hole
H3: Condensate discharge hole
P1: Water inlet pipe
P2: Fuel inlet pipe
P3: Condensate discharge pipe
S1, S1': first compartment space
S2, S2': second compartment space
S1-1, S1-1', S1-1'': 1-1 compartment space
S1-2, S1-2', S1-2'': 1-2 compartment space
S2-1, S2-1', S2-1'': 2-1 compartment space
S2-2, S2-2', S2-2'': 2-2 compartment space
T: Condensate trap

Claims (9)

An expansion tank provided to store water;
a water heater provided to heat the water by receiving heat from combustion gas generated by a combustion reaction;
a heating heat exchanger provided to receive the water heated by the water heater and exchange heat with air to be discharged for heating;
a fan provided to supply the air to the heating heat exchanger; and
It includes a case in which the expansion tank, the water heater, the heating heat exchanger, and the fan are disposed,
In the above case,
An enclosure in which a first opening is formed on a side of a reference direction perpendicular to the vertical direction; and
A first opening cover provided to be coupled to the enclosure and covering the first opening when coupled to the enclosure,
An air heating device, wherein a communication portion is formed in the enclosure or the first opening cover to connect the expansion tank and the outside of the case to each other and is provided to guide water from the outside of the case to the expansion tank. In claim 1,
In the communication part,
a communication member having one end connected to the expansion tank so that the expansion tank and the outside of the case communicate with each other, and connecting the expansion tank and the outside of the case; and
An air heating device in which an opening and closing member is disposed to open and close the other end of the communication member located on the outer side of the case. In claim 2,
The communication member is an air heating device including an inclined area having a shape inclined upward when viewed from the expansion tank. In claim 2,
The communication member is an air heating device including an external protruding area, which is an area protruding to the outside of the case. In claim 4,
The air heating device, wherein the external protruding area opens upward. In claim 2,
An air heating device in which a water level sensor is disposed inside the expansion tank to detect the water level inside the expansion tank. In claim 2,
It further includes an overflow pipe connected to the expansion tank to discharge water that overflows from the expansion tank,
The position where the overflow pipe is connected to the expansion tank is located lower than the position where the communication member and the expansion tank are connected. An opening step of opening a communication part of the case of the air heating device; and
An injection step of injecting water into the expansion tank of the air heating device through the communication part,
The air heating device includes the expansion tank provided to store water; and
Comprising the case in which the expansion tank is disposed,
In the above case,
An enclosure in which a first opening is formed on a side of a reference direction perpendicular to the vertical direction;
A first opening cover provided to be coupled to the enclosure and covering the first opening when coupled to the enclosure,
The first opening cover is formed with a communication part that opens to connect the expansion tank and the outside of the case to each other and guides water from the outside of the case to the expansion tank. In claim 8,
In the communication part,
a communication member having one end connected to the expansion tank so that the expansion tank and the outside of the case communicate with each other, and connecting the expansion tank and the outside of the case; and
An opening and closing member provided to open and close the other end of the communication member located on the outer side of the case is disposed,
The opening step includes a communication member opening step of separating the opening and closing member from the communication member and opening the other end of the communication member located on the outer side of the case.

Images