JP6400055B2 - Hot water heating system - Google Patents

Description

  The present invention relates to a hot water heating system including a heat exchanger that transfers thermal energy from a high-temperature fluid to room air.

  A ventilation system for taking outside air from the outside into the room is generally known. For example, in cold regions, the entire indoor space is warmed in winter. On the other hand, it is not uncommon for outside air to drop below 0 degrees Celsius. When such low temperature outside air flows from the indoor outlet, a low temperature space is locally generated in the room, and the resident feels uncomfortable.

Japanese Patent Laid-Open No. 11-264560 JP-A-8-54133

  Patent document 1 discloses a heating apparatus. Outside air taken in from outside during ventilation is warmed by a heating device and introduced into the room. A wall space is defined between the heat insulating layer and the inner wall when taking in outside air. Major structural changes are required and cannot be easily applied to houses. Patent document 2 discloses a heating ventilation apparatus. Similarly, since outside air is introduced into hollow members such as floors, walls, and ceilings, a large structural change is required and it cannot be easily applied to a house.

  This invention is made | formed in view of the said actual condition, and it aims at providing the hot water heating system which can implement | achieve introduction of cold air in ventilation, without requiring a big structure change.

According to the first aspect of the present invention, a boiler that generates thermal fluid by applying thermal energy to the fluid, a first heat exchanger that is connected to the boiler and transmits thermal energy from the hot fluid to room air; A cylindrical member that is incorporated in a pipe that guides outside air taken in from the outside toward the room, and that forms a path for the outside air while maintaining linearity with the pipes before and after, and in parallel with the first heat exchanger And a second heat exchanger connected to the boiler and disposed in the cylindrical member for transferring heat energy from the high-temperature fluid to the outside air.

  According to the second aspect, in addition to the configuration of the first side, the first heat exchanger includes a hot water pipe embedded in the floor.

  According to the third aspect, in addition to the configuration of the first or second side, the first heat exchanger includes a panel heater installed on the floor. The first heat exchanger may include a heater panel and a hot water pipe embedded in the floor in parallel, may use the hot water pipe without using the heater panel, or may use the hot water pipe without using the hot water pipe. May be used. A heater panel and a hot water pipe may be properly used for each room.

  According to the 4th side, in addition to the composition in any one of the 1st-the 3rd side, the cylinder member is formed from a heat insulating material.

  According to the fifth aspect, in addition to the configuration of any of the first to fourth side surfaces, the second heat exchanger extends in a spiral shape along the inner peripheral surface in the axial direction of the cylindrical member. And a second flow passage that is continuous from the first flow passage and extends in a spiral shape in an opposite direction to the axial direction inside the first flow passage.

  According to the sixth aspect, the house includes a hot water heating system having the configuration according to the first to fifth aspects.

According to the first aspect, the first heat exchanger functions as a so-called heating device and warms indoor air. Since the warmed room air is warmed, the temperature of the room air can be maintained with a minimum of heat energy. The outside air taken in from the outside by ventilation is warmed by the second heat exchanger and introduced into the room. Therefore, it is avoided that cold air is introduced into the room during heating. Ventilation can be achieved while maintaining a good indoor environment. In realizing such ventilation, the second heat exchanger can be incorporated in the cylinder member in advance, and the cylinder member can be easily incorporated into the existing piping structure. No major structural changes are required when building a house. In particular, since the tubular member is maintained linearity between the front and rear pipe, increase the flow resistance of the outer air is not generated, the ambient air residence in the cylinder member is avoided. Therefore, the temperature distribution of the outside air can be made uniform. Since the temperature of the outside air can be accurately controlled according to the flow rate of the outside air, excessive heating and insufficient heating can be prevented with respect to the outside air. A good temperature environment is ensured in a ventilated room . In general, in the heat exchanger, the temperature of the gas based on the flow rate of the thermal energy and gas released is adjusted. Therefore, it is difficult to adjust the gas temperature unless the gas flow rate is stable. As a result, gas temperature control is complicated.

Moreover, since the second heat exchanger is connected to the boiler in parallel with the first heat exchanger, the high temperature fluid flows into the second heat exchanger by branching from the high temperature fluid flowing from the boiler into the first heat exchanger. Therefore, the temperature of the air flowing into the room by ventilation can be linked to the room heating capacity. For example, when the outside air temperature decreases and the indoor heating capacity increases, the heating capacity of the second heat exchanger used for ventilation also increases. Thus, the temperature of the air flowing into the room by ventilation can follow the temperature of the room air. Residents do not feel uncomfortable with the air flowing into the room from the outside air by ventilation.

  According to the second aspect, the first heat exchanger provides floor heating. Floor heating warms indoor space using radiant heat from the floor.

  According to the third aspect, the first heat exchanger provides floor heating. Floor heating uses the radiant heat from the panel heater to heat the indoor space.

  According to the fourth aspect, the thermal energy introduced into the second heat exchanger is prevented from escaping to the outside of the cylindrical member, and the thermal energy can be efficiently transmitted to the outside air.

  According to the fifth aspect, the second heat exchanger can efficiently transmit heat energy to the outside air in a limited space.

  According to the 6th side, the house which can avoid introduction of cold air toward the room at the time of heating is provided. In this house, ventilation is achieved while maintaining a good indoor environment. In order to realize such ventilation, the house does not require a major structural change.

It is a vertical sectional view which shows roughly the structure of the house provided with the ventilation system. It is an enlarged vertical sectional view schematically showing the structure of the heat exchange unit. It is a conceptual diagram which shows roughly the whole structure of a warm water heating system.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 schematically shows an overview of a house. The house 11 includes a foundation 13 installed on the ground 12. The foundation 13 is formed from concrete. Here, a solid foundation is used as the foundation 13. The solid foundation includes a rising edge 13a that rises from the ground 12 in the vertical direction. The foundation slab 13b continues inside the rising 13a. An underfloor space 14 surrounded by the rising 13a is defined on the foundation slab 13b. A pipe 15 is laid along the outer periphery of the rising 13a. The outer periphery of the foundation 13 is covered with a heat insulating material 16.

  A floor and wall structure 17 is installed on the rising 13 a of the foundation 13. The structure 17 includes a plurality of square members 18 that are bridged by the rising portions 13a facing each other and extend in the horizontal direction. A plurality of layers of flooring 19 is supported on the square 18. In this way, the floor 21 is formed. The flooring 19 closes the underfloor space 14 from above.

  A wall material 22 is supported on the rising 13a of the foundation 13. The wall material 22 spreads in the vertical direction on the rising 13a. The wall member 22 includes an inner plate 22a that faces the indoor space on a plate surface, and an outer plate 22b that extends in parallel with the inner plate 22a and sandwiches a heat insulating material between the inner plate 22a. The outside of the outer plate 22b is covered with an outer wall 23 such as siding. For example, the wall material 22 may be a material called 2X4 (two-by-four) or 2X6 (two-by-six).

  A ceiling member 25 is coupled to the upper end of the wall member 22. The ceiling material 25 extends horizontally in parallel to the floor 21. For example, the ceiling member 25 may include a ceiling plate 25a that forms the ceiling of the lower floor and a floor plate 25b that forms the floor of the upper floor. A ceiling back space 26 is defined between the ceiling board 25a and the floor board 25b. The floor material 19, the wall material 22 and the ceiling material 25 define an indoor space 27.

  The house 11 incorporates a ventilation system 31 according to an embodiment of the present invention. The ventilation system 31 includes a bath ventilation unit 33 embedded in, for example, the ceiling surface of the unit bath 32. The bus ventilation unit 33 includes a first suction port 33a and a second suction port 33b. The first suction port 33a faces the bathroom 34 and sucks air in the bathroom 34. A suction grill 36 that opens to the ceiling surface of the toilet 35 and the bathroom is connected to the second suction port 33b. The suction grill 36 and the second suction port 33 b are connected by a duct 37. The duct 37 is disposed in the ceiling space 26.

  The bus ventilation unit 33 includes an exhaust port 38. The exhaust port 38 opens at the outer wall 23 of the house 11. The air sucked from the first suction port 33a and the second suction port 33b is released from the exhaust port 38 to the outside. Such air flow is generated by a blower (not shown) incorporated in the bath ventilation unit 33. The blower may be configured by a fan unit that receives power supply and rotationally drives the fan blade. The indoor air is forcibly sucked from the first suction port 33a and the suction grill 36 by the action of the blower, and is released outdoors.

  The ventilation system 31 includes an intake port 41 that opens to the outer wall 23 of the house 11 and an air outlet 42 that opens to the wall surface of the indoor space 27. The air outlet 42 is disposed in, for example, a living room other than the bathroom 34, the toilet 35, and the washroom. The intake port 41 and the air outlet 42 are connected to each other by a pipe 43. The pipe 43 includes an aluminum flexible duct 44 disposed in the underfloor space 14, for example. When negative pressure is generated in the room according to the blowing function of the blower, outdoor outdoor air is taken into the pipe 44 from the intake port 41. The taken-in outside air is guided from the intake port 41 to the air outlet 42 by the negative pressure in the room, and blown out from the air outlet 42 toward the room.

  The ventilation system 31 incorporates a heat exchange unit 45 of a hot water heating system. The heat exchange unit 45 is disposed in the underfloor space 14. The heat exchange unit 45 includes a cylindrical member 46 that is incorporated in the piping 43 of the ventilation system 31 and forms a passage for outside air. The cylindrical member 46 constitutes a part of the pipe 43. The cylindrical member 46 is formed from a heat insulating material having a lower thermal conductivity than, for example, metal. The heat exchange unit 45 may be disposed between the flexible duct 44 and the air outlet 42 as illustrated, or may be disposed between the intake port 41 and the flexible duct 44.

  As shown in FIG. 2, the heat exchange unit 45 includes a heat exchanger 47 that is connected to a high-temperature fluid supply source and is disposed in the cylindrical member 46 to transfer heat energy from the high-temperature fluid to the outside air. The heat exchanger 47 is continuous from the first flow passage 48 in a spiral shape along the inner peripheral surface in the axial direction of the cylindrical member 46, and is continuous from the first flow passage 48, and is axially inside the first flow passage 48 And a second flow passage 49 extending in a spiral shape in the opposite direction. The first flow passage 48 and the second flow passage 49 are formed from, for example, a copper pipe. The first flow passage 48 has a first connection end 51 disposed on the outer side of the cylindrical member 46 at one end. Similarly, the second flow passage 49 has a second connection end 52 disposed on the outer side of the cylindrical member 46 at one end. The positions of the first connection end 51 and the second connection end 52 may be aligned in the axial direction of the tubular member 46. The heat exchanger 47 transmits heat energy from the high-temperature fluid to the outside air flowing through the cylindrical member 46.

  As shown in FIG. 3, a hot water heating system 54 according to an embodiment of the present invention is incorporated in a house 11. The hot water heating system 54 includes a boiler 55 that generates a high-temperature fluid by applying thermal energy to a liquid such as an antifreeze containing propylene glycol as a main component, and a circulation connected to the boiler 55 and exiting from the boiler 55 and entering the boiler 55. And a path 56. The boiler 55 uses kerosene, electricity, gas, or the like as a heat energy source for a high-temperature fluid. The boiler 55 functions as a high-temperature fluid supply source.

The circulation path 56 is composed of a heating heat exchanger (hereinafter referred to as “first heat exchanger”) 57 that transmits thermal energy from the high-temperature fluid to the air in the indoor space 27, and the above-described heat exchange used in the ventilation system 31. (Hereinafter referred to as “second heat exchanger”) 47. The first heat exchanger 57 is inserted in parallel to the circulation path 56 and is embedded in the floor 21, and the panel heater 59 is also inserted in parallel to the circulation path 56 and installed on the floor 21. Including. Hot water (= warmed antifreeze) flows through the hot water pipe 58 and the panel heater 59 individually. The hot water pipe 58 should just be installed for every partitioned space, such as between entrance soil, a living room, a dining room, a kitchen, a hall | hole, and a hallway. The hot water pipe 58 is sandwiched between the floor materials 19 and warms the floor materials 19 based on the hot water. The warmed flooring 19 warms the room air with radiant heat. The panel heater 59 warms the room air with radiant heat based on the hot water. The panel heater 59 and the hot water pipe 58 may be properly used for each space partitioned in the house 11.

  The second heat exchanger 47 is inserted into the circulation path 56 in parallel with the first heat exchanger 57. The first connection end 51 of the second heat exchanger 47 is connected to a supply pipe 61 a extending from the boiler 55. The second connection end 52 of the second heat exchanger 47 is connected to a return piping 61 b that extends toward the boiler 55. The first connection end 51 and the corresponding piping 61a, and the second connection end 52 and the corresponding piping 61b may be coupled to be separable from each other.

  A pipe 15 is further connected to the circulation path 56. A high-temperature fluid from the boiler 55 flows through the pipe 15. The radiant heat of the pipe 15 warms the air in the underfloor space 14.

  When the hot water heating system 54 is activated, high temperature water (= high temperature antifreeze) is generated in the boiler 55. Hot water is supplied from the circulation path 56 to the hot water pipe 58, the panel heater 59, and the heat exchange unit 45. The hot water pipe 58 constitutes floor heating for each partitioned space such as between the entrance soil, the living room, the dining room, the kitchen, the hall, and the hallway. Thus, the hot water heating system 54 warms the indoor space with the radiant heat from the floor 21. Similarly, the panel heater 59 is installed in a toilet, a laundry space, a Japanese-style room, and a room on the second floor, and constitutes floor heating for each partitioned room. Thus, the hot water heating system 54 warms the indoor space with the radiant heat from the panel heater 59. The 1st heat exchanger 57 functions as what is called a heating device, and warms indoor air. Since the warmed room air is warmed, the temperature of the room air can be maintained with a minimum of heat energy.

  When the bath ventilation unit 33 operates in the ventilation system 31, room air is sucked into the bus ventilation unit 33 from the first suction port 33 a and the suction grill 36. A negative pressure is generated in the indoor space 27, and outdoor outdoor air is taken into the pipe 44 from the intake port 41. The taken-in outside air is guided from the intake port 41 to the air outlet 42 by the negative pressure in the room, and blown out from the air outlet 42 toward the room. Thus, outside air is introduced into the indoor space 27. Ventilation is realized.

  The outside air taken in from the outside by ventilation is warmed by the second heat exchanger 47 and introduced into the room. Therefore, it is avoided that cold air is introduced into the room during heating. Ventilation can be achieved while maintaining a good indoor environment. In realizing such ventilation, the second heat exchanger 47 can be assembled in advance in the cylindrical member 46 and assembled into the heat exchange unit 45, and the cylindrical member 46 can be easily incorporated into an existing piping structure. A major structural change is not required for the construction of the house 11.

  The cylindrical member 46 of the heat exchange unit 45 is formed from a heat insulating material. The heat energy introduced into the second heat exchanger 47 is prevented from escaping to the outside of the cylindrical member 46, and the heat energy can be efficiently transmitted to the outside air.

  The second heat exchanger 47 is continuous with the first flow passage 48 extending in a spiral shape along the inner peripheral surface in the first direction in the axial direction of the tubular member 46, and the first flow passage 48. And a second flow passage 49 extending in a spiral shape in a second direction opposite to the first direction. The second heat exchanger 47 can efficiently transfer heat energy to the outside air in a limited space.

  In the house 11, the first heat exchanger 57 may include the panel heater 59 without including the hot water pipe 58 embedded in the floor 21, and conversely, without including the panel heater 59, the hot water pipe 58 for floor heating. May be included.

DESCRIPTION OF SYMBOLS 11 ... House, 21 ... Floor, 23 ... Outer wall, 31 ... Ventilation system, 41 ... Intake port, 42 ... Air outlet, 43 ... Pipe, 46 ... Cylindrical member, 47 ... Second heat exchanger (heat exchanger), 48 ... first flow passage, 49 ... second flow passage, 51 ... connection end (first connection end), 52 ... connection end (second connection end), 54 ... warm water heating system, 55 ... as a source of high-temperature fluid Boiler, 57 ... 1st heat exchanger (heat exchanger for heating), 58 ... Hot water pipe, 59 ... Panel heater.

Claims (6)

A boiler (55) that applies thermal energy to the fluid to produce a hot fluid;
A first heat exchanger (57) connected to the boiler (55) for transferring thermal energy from the hot fluid to room air;
A tubular member (46) that is incorporated in a pipe (43) that guides outside air taken in from the outdoors toward the room, and that forms a passage for the outside air while maintaining linearity with the pipe (43) at the front and rear. ,
A second heat exchanger (47) connected to the boiler (55 ) in parallel with the first heat exchanger (57) and disposed in the cylindrical member (46) for transferring thermal energy from the high-temperature fluid to the outside air. And a hot water heating system.   The hot water heating system according to claim 1, wherein the first heat exchanger (57) includes a hot water pipe (58) embedded in the floor (21).   The hot water heating system according to claim 1 or 2, wherein the first heat exchanger (57) includes a panel heater (59) installed on the floor.   The hot water heating system according to any one of claims 1 to 3, wherein the cylindrical member (46) is formed of a heat insulating material. In the hot water heating system according to any one of claims 1 to 4,
The second heat exchanger (47)
A first flow path (48) extending in a spiral shape along the inner peripheral surface in the axial direction of the cylindrical member (46);
A second flow path (49) continuous from the first flow path (48) and extending in a spiral shape in the axial direction opposite to the inside of the first flow path (48);
A hot water heating system characterized by comprising:   A house comprising the hot water heating system (54) according to any one of claims 1 to 5.

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