JP2019207047A - Hot-water heating device - Google Patents

Abstract

To provide a hot-water heating device in which falling water noise in a cistern tank can be made small.SOLUTION: The hot-water heating device comprises: a heat exchanger 7 for hot water; a cistern tank 33; a hot water outgoing pipe 39 which connects a circulation pump 34 and a heat radiator 32 to each other; a hot water return pipe 40 which connects the heat radiator 32 and the heat exchanger 7 for hot water to each other; a heat exchange outlet pipe 42 which has one end connected to an outlet side of the heat exchanger 7 for hot water and the other end located in the cistern tank 33; and a bleeding pipe 44 which has one end connected to the hot water outgoing pipe 39. A bleeding hole 43 for heat exchange outlet pipe is formed in a part located in the cistern tank 33, of the heat exchange outlet pipe 42, and the other end of the bleeding pipe 44 is connected to the heat exchange outlet pipe 42. As a result, falling water noise is caused by only circulation liquid from the bleeding hole of the heat exchange outlet pipe 42 and therefore can be made small, whereas in the past, falling water noise of the circulation liquid from the bleeding hole of the heat exchange outlet pipe 42 and the bleeding hole of bleeding pipe 44 has been loud.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hot water heater that circulates hot water to perform floor heating and the like.

  Conventionally, in this type, the burner 101, the hot water heat exchanger 102 heated by the combustion gas of the burner 101, the radiator 103 connected to the hot water heat exchanger 102, and the hot water heat A stern tank 104 and a circulation pump 105 connected between the exchanger 102 and the radiator 103 are provided, and the stove alone operation by the burner 101 and the circulating fluid in the stern tank 104 are exchanged with the hot water heat exchanger 102. And the combined use with the hot water heating performed by circulating the heated circulating liquid to the radiator 103 such as a floor heating panel installed outside the apparatus by the circulation pump 105. (For example, see Patent Document 1)

  When the apparatus is installed, the circulating fluid is supplied into the cistern tank 104 and the circulating pump 105 is driven to fill the circulating fluid in the hot water heating circuit. Since the cistern tank 104 is open to the atmosphere, the circulating fluid Evaporates and the water level of the circulating fluid in the cistern tank 104 decreases, so that the circulating fluid is replenished when the circulating fluid is reduced. At that time, the circulating fluid is filled to remove air in the hot water heating circuit. After the replenishment, the circulation pump 105 for circulating the circulating fluid was driven.

  At this time, one end of the air vent pipe 107 is connected to the hot water outlet pipe 106 through which the circulating fluid flows from the circulation pump 105 toward the radiator 103 for floor heating, and the other end is positioned at the lower part in the cistern tank 104. Since the air vent hole 108 for the air vent pipe is formed in the upper part of the air vent pipe 107 in the cistern tank 104, the air in the circulating fluid flowing from the circulation pump 105 toward the floor heater radiator 103 is The air vent pipe 107 and a part of the circulating fluid passed through the air vent pipe 107 from the air vent pipe 108 and into the cistern tank 104.

  The circulating fluid that has passed through the hot water heat exchanger 102 in the apparatus from the floor heating radiator 103 through the hot water return pipe 109 has one end connected to the outlet of the hot water heat exchanger 102 and the other end. The heat exchange outlet pipe 110 provided so as to be located in the lower part of the cistern tank 104 returns to the cistern tank 104, but an air vent hole 111 for the heat exchange outlet pipe is formed above the heat exchange outlet pipe 110 in the cistern tank 104. Since it was formed, the air that could not escape through the air vent pipe 107 could escape from the heat exchange outlet pipe air vent hole 111 of the heat exchange outlet pipe 110 into the cistern tank 104.

JP 2003-254624 A

  By the way, in this conventional type, the circulating fluid falls into the cistern tank from the air vent hole for the air vent pipe of the air vent pipe and the air vent hole for the heat exchange outlet pipe of the heat exchange outlet pipe, so that a falling sound such as a rattling noise is generated. There was a problem of doing.

  In order to solve the above-mentioned problems, the present invention provides, in claim 1, a heat exchanger for hot water that heats hot water, and a cistern tank that is open to the atmosphere that stores hot water for circulating water heated by the heat exchanger for hot water. A circulating pump that circulates the circulating fluid in the cistern tank to the radiator, a hot water outlet pipe that connects the circulating pump and the radiator, and a hot water return that connects the radiator and the hot water heat exchanger A tube, one end connected to the outlet side of the hot water heat exchanger, the other end connected to the cistern tank, and a one end connected to the hot water outlet pipe. A hot water heating apparatus having a vent hole for a heat exchange outlet pipe in a portion of the heat exchange outlet pipe located in the cistern tank, wherein the other end of the air vent pipe is connected to the heat exchange outlet It is connected to the tube.

  Moreover, in Claim 2, the connection location of the other end of the said air vent pipe and the said heat exchanger outlet pipe in Claim 1 is for the hot water rather than the air vent hole for the said heat exchanger outlet pipe. It is provided on the heat exchanger side.

  According to the first aspect of the present invention, a portion of the heat exchange outlet pipe provided in the cistern tank, having one end connected to the outlet side of the hot water heat exchanger and the other end located in the cistern tank. The air vent hole for the heat exchanger outlet pipe is formed in the air outlet, and the other end of the air vent pipe whose one end is connected to the hot water outlet pipe is connected to the heat exchanger outlet pipe. The only loud noise from the circulating fluid falling sound and the circulating fluid falling from the air vent hole of the air vent pipe is the circulating sound of the circulating fluid falling from the air vent hole of the heat exchange outlet pipe. The sound of falling water can be reduced.

  According to the second aspect of the present invention, the connection point between the other end of the air vent pipe and the heat exchange outlet pipe is provided on the heat exchanger side for hot water rather than the air vent hole for the heat exchange outlet pipe of the heat exchange outlet pipe. Therefore, before the circulating fluid passes through the air vent hole for the heat exchanger outlet pipe, the pressure of the circulating fluid decreases, thereby reducing the amount of the circulating fluid flowing out from the air vent hole for the heat exchanger outlet pipe and releasing the air. The falling sound of the circulating fluid flowing from the pipe can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic of the hot water heating apparatus which shows one Embodiment of this invention. Schematic of the conventional hot water heating apparatus.

Next, one embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a hot water heater, which includes a main body device 2 and a plate-like lower tray 3, and the main body device 2 is attached to the upper surface of the lower tray 3.
The main body device 2 includes a housing 4 that forms an outer frame of the main body device 2, and an operation panel 5 provided with various switches, a display unit, and the like is disposed on the front upper portion of the housing 4. .

  The main body device 2 of the hot water heating apparatus 1 includes a burner 6 that burns fuel, and a hot water heat exchanger 7 that is heated by the combustion gas of the burner 6, and the burner 6 and the hot water heat exchanger 7 are Is disposed in the housing 4.

  The burner 6 includes a pot heater 8 that preheats the burner 6 to an optimum temperature for vaporization of kerosene, a spark plug 9 that performs ignition, and a frame rod 10 that detects the presence or absence of a flame. It is located below the substantially box-shaped outer cylinder 11.

  In the outer cylinder 11, a skeleton (not shown) made of a heat-resistant transparent body is suspended from above, and a radiating cylinder 12 that receives red heat from the combustion heat from the burner 6 is disposed in the skeleton. Yes.

  A box-shaped stove heat exchanger 13 having a central portion communicating with the outer cylinder 11 is disposed at the upper portion of the outer cylinder 11, and an exhaust pipe 14 is connected to one end of the stove heat exchanger 13, At the other end of the stove heat exchanger 13, a heat exchange chamber 15 in which the hot water heat exchanger 7 is accommodated is provided.

A cooling fan 16 is disposed in the housing 4, and the cooling fan 16 blows indoor air to the stove heat exchanger 13 and the heat exchange chamber 15.
Thereby, while suppressing the temperature rise of each part, the temperature of the combustion gas exhausted outdoors is lowered, and the air blown up by the cooling action in each part is blown out at the lower front portion of the casing 4 (not shown). To the room as warm air.

  The inside of the stove heat exchanger 13 is partitioned by a partition plate 17, and in the stove heat exchanger 13, a bypass path 18 for passing the combustion gas to the exhaust pipe 14 and an exhaust pipe after passing through the heat exchange chamber 15. 14 is formed in the communication path 19.

The stove heat exchanger 13 is provided with a damper 20 that controls opening and closing of the bypass path 18 and the communication path 19. When the damper 20 opens one of the bypass path 18 and the communication path 19, the other is closed, and the reverse When one is closed, the other is opened.
The stove alone can be heated by the opening of the bypass 18, and the combined heating by the stove and the hot water heating can be performed by the opening of the communication path 19.

  A combustion fan 21 is disposed in the casing 4, and the combustion fan 21 supplies combustion air to the burner 6. When the burner 6 is extinguished, the combustion fan 21 is continuously driven at a strong rotation to cool the burner 6. Is to do.

An oil leveler 22 is disposed in the housing 4 and stores fuel supplied from a main tank (not shown) installed outdoors. An electromagnetic pump 23 and a pumping pump 24 are disposed, The pump 23 supplies the fuel in the oil leveler 22 to the burner 6 through the oil supply pipe 25.
The pumping pump 24 has one end connected to the oil leveler 22 and the other end connected to an oil feeding pipe 26 that feeds fuel from a main tank installed outdoors. The fuel oil from the main tank is closed so that the fuel oil from the main tank is not supplied into the oil leveler 22.

  27 is an oil level detecting means disposed in the oil leveler 22. The float 28 moves up and down following the vertical movement of the oil level, the column 29 that penetrates the hollow portion of the float 28, and the float 28 descends. A first float switch 30 that is turned on when it is in contact with it, and is turned off when the float 28 rises from the contacted state to become non-contact, and is provided above the first float switch 30. The first float switch 30 comprises a second float switch 31 that is turned on when the valve 28 is raised and touched, and turned off when the float 28 is lowered and brought into non-contact from the contacted state. The second float switch 31 is provided with a differential so that the oil level when ON is lower than the oil level when OFF.

The main unit 2 includes a cistern tank 33 which is located below the hot water heat exchanger 7 and is open to the atmosphere for storing the circulating fluid heated by the hot water heat exchanger 7. A circulation pump 34 that is located in the lower portion and circulates the circulating fluid in the cistern tank 33 to a radiator 32 such as a floor heating device, and is provided between the circulation pump 34 and the cistern tank 33 and circulates toward the circulation pump 34 When the temperature of the liquid is low, for example, a support heater 35 that heats the circulating liquid toward the circulation pump 34 at the start of the hot water heating operation is provided. As the circulating liquid, for example, circulating water or antifreeze is used. The circulation pump 34 and the support heater 35 are disposed in the housing 4.
Thereby, the circulating fluid heated with the heat exchanger 7 for warm water can be circulated to the radiator 32, and warm water heating can be performed in the distant position.

  The cistern tank 33 and the support heater 35 are connected by a heater water supply pipe 36, and the support heater 35 and the circulation pump 34 are connected by a circulation pump water supply pipe 38 having an incoming hot water temperature detecting means 37, and the circulation pump 34 and the floor are connected to the floor. A radiator 32 such as a heating device is connected by a hot water forward pipe 39, and a radiator 32 such as a floor heating device and the hot water heat exchanger 7 are connected by a hot water return pipe 40, and the hot water heat exchanger 7 and a cistern are connected. The tank 33 is connected by a heat exchange outlet pipe 42 provided with a heat exchange outlet temperature detecting means 41.

One end of the heat exchange outlet pipe 42 reaches the vicinity of the bottom in the cistern tank 33, and a heat exchange outlet pipe air vent hole 43 is formed in the upper part of the heat exchange outlet pipe 42 in the cistern tank 33. The heat exchange outlet pipe air vent hole 43 is formed above the upper limit position of the normal circulating fluid level in the cistern tank 33.
44 is an air vent pipe, one end of which is connected to the hot water outlet pipe 39 and the other end is a heat exchange outlet pipe 42 between the heat exchange outlet pipe air vent hole 43 of the heat exchange outlet pipe 42 and the hot water heat exchanger 7. The orifice 45 for adjusting the flow rate is built in the pipe.

  46 is a control unit equipped with a microcomputer for controlling the heating operation of the stove alone of the hot water heating apparatus 1 and the combined heating operation by the stove and hot water heating. The operation of the electromagnetic pump 23 of the oil leveler 22, the pumping pump 24 and the damper 20. In addition, the circulation pump 34, the support heater 35, etc. are controlled, the fuel consumption in the heating operation is integrated, the time is counted by a timer (not shown), and an abnormality occurs in the equipment including the oil leveler 22. If it is determined that the heating operation has been performed, the heating operation is stopped, and the display unit of the operation panel 5 displays a notification that an abnormality has occurred.

Next, the operation of the embodiment of the present invention will be described.
First, in the stove single operation, if the bypass 20 is opened by the damper 20 and the communication passage 19 is shut off, and the burner 6 starts to burn in this state, the generated combustion gas rises in the outer cylinder 11 and the heat radiating cylinder 12 is made into a red hot state, and this red hot state is reflected by a reflector (not shown) to perform radiant heating, and the indoor air blown to the stove heat exchanger 13 and the heat exchange chamber 15 by the cooling fan 16. However, the temperature rises due to the cooling action in each part and is discharged into the room as warm air from a blower outlet (not shown) formed in the lower front portion of the housing 4 to perform warm air heating.
The combustion gas that has passed through the bypass 18 and entered the stove heat exchanger 13 is discharged to the outside through the exhaust pipe 14.

  Next, in the combined operation of the hot water heating such as the stove and the floor heating, the damper 20 opens the communication path 19 and shuts off the bypass path 18, and in this state the combustion of the burner 6 is started or the combustion is continued as it is. For example, the generated combustion gas rises in the outer cylinder 11 to make the heat radiating cylinder 12 in a red-hot state, and this red-hot state is reflected by a reflector, and is blown to the lower portion of the front surface of the housing 4 by the radiant heating and cooling fan 16. Warm air heating is performed by discharging into the room as warm air from the formed outlet (not shown).

  The combustion gas flowing into the communication passage 19 enters the heat exchange chamber 15 through the communication passage 19 and is circulated in the hot water heat exchanger 7 because the bypass passage 18 on the main stove heat exchanger 13 side is blocked. It exchanges heat with the liquid and is discharged to the outside through the exhaust pipe 14.

  At this time, since the circulation pump 35 is operating, the circulating liquid in the cistern tank 33 flows into the circulation pump 35 through the support heater 35, and from the hot water outlet pipe 39 into the radiator 32 such as a floor heating device. Then, it passes through the hot water return pipe 40 and flows into the hot water heat exchanger 7, and the circulating fluid that flows into the hot water heat exchanger 7 exchanges heat with the combustion gas that flows into the heat exchange chamber 15. It is heated and returns to the cistern tank 33 through the heat exchange outlet pipe 42. When returning to the cistern tank 33, the air contained in the circulating liquid is discharged from the heat exchange outlet pipe 42 in the cistern tank 33. The heat exchange outlet pipe air vent hole 43 formed in the upper part is pulled into the cistern tank 33.

  Further, since one end of the air vent pipe 44 is connected to the warm water forward pipe 39, the air contained in the circulating fluid from the circulation pump 35 through the warm water forward pipe 39 to the radiator 32 such as a floor heating device. Passes through the air vent pipe 44 together with a part of the circulating fluid and from the other end connected to the hot water heat exchanger 7 side of the heat exchange outlet pipe air vent hole 43 of the heat exchange outlet pipe 42. The air flowing into the heat exchange outlet pipe 42 and contained in the circulating liquid passes through the heat exchange outlet pipe air vent hole 43 formed in the upper part of the heat exchange outlet pipe 42 in the cistern tank 33. Then, the circulating fluid joins with the circulating fluid flowing from the hot water heat exchanger 7 and returns to the cistern tank 33.

Here, the amount of the circulating liquid flowing out from the air vent hole 43 for the heat exchanger outlet pipe formed in the upper part of the heat exchanger outlet pipe 42 is proportional to the square of the diameter of the hole of the air vent hole 43 for the heat exchanger outlet pipe. Proportional to liquid pressure.
Further, the pressure of the circulating fluid flowing in the pipe becomes lower when the speed of the circulating fluid flowing in the pipe becomes higher than before the speed increases.
Therefore, when the circulating fluid flowing from the hot water heat exchanger 7 and the circulating fluid flowing from the air vent tube 44 merge in the heat exchange outlet pipe 42, the circulating fluid flows at a speed after the merging from before the merging. Since the speed of the circulating fluid is reduced thereby, the pressure of the circulating fluid is lower after the merging than before the merging.

  Therefore, the circulating fluid flowing from the hot water heat exchanger 7 and the circulating fluid flowing from the air vent pipe 44 are merged so that the pressure of the circulating fluid is lower than that before merging. By passing through the air vent hole 43 for the heat exchange outlet pipe of the exchange outlet pipe 42, the amount of the circulating liquid flowing out from the air vent hole 43 for the heat exchange outlet pipe 42 of the heat exchange outlet pipe 42 may be made smaller than when not joining. Thus, the falling sound of the circulating fluid flowing from the air vent pipe 44 can be reduced.

  As described above, the other end of the air vent pipe 44, one end of which is connected to the hot water outlet pipe 39, is connected to the heat exchange outlet pipe 42 that communicates the outlet side of the hot water heat exchanger 7 and the cistern tank 33. Since the hole for venting the circulating fluid in the tank 33 is only the air vent hole 43 for the heat exchanging outlet pipe 42 of the heat exchanging outlet pipe 42, the falling water of the circulating fluid that has conventionally fallen from the air vent hole of the heat exchanging outlet pipe 42 is used. The sound was loud due to the sound of the circulating fluid falling from the air vent hole of the air vent pipe 44, and only the sound of the circulating fluid falling from the air vent hole of the heat exchange outlet pipe 42 was The sound can be reduced.

  Furthermore, since the other end of the air vent pipe 44 is connected to the heat exchanger 7 side for the hot water rather than the air vent hole 43 for the heat exchange outlet pipe of the heat exchange outlet pipe 42, the circulating fluid passes through the air vent hole 43 for the heat exchange outlet pipe. The pressure of the circulating fluid drops before passing through, thereby reducing the amount of circulating fluid flowing out from the air vent hole 43 for the heat exchanger outlet pipe 42 of the heat exchanger outlet pipe 42, and the falling sound of the circulating fluid flowing from the air vent pipe 44. Can be reduced.

  In this embodiment, the hot water heat exchanger 7 is heated with the combustion gas of the burner 6 and the circulating fluid passing through the hot water heat exchanger 7 is heat-exchanged for heating. However, the present invention is not limited to this. An electric heater may be used as a heating source for heating the heat exchanger 7, or a heat pump device may be used.

7 Heat Exchanger for Hot Water 32 Radiator 33 Systern Tank 34 Circulation Pump 39 Hot Water Outward Pipe 40 Hot Water Return Pipe 42 Heat Exchange Outlet Pipe 44 Air Bleed Pipe

Claims (2)

  A heat exchanger for warm water that heats hot water, a cistern tank that is open to the atmosphere that stores the circulating fluid heated by the heat exchanger for warm water, and a circulation pump that circulates the circulating fluid in the cistern tank to a radiator A hot water outlet pipe connecting the circulation pump and the radiator, a hot water return pipe connecting the radiator and the hot water heat exchanger, and one end connected to the outlet side of the hot water heat exchanger A heat exchange outlet pipe provided so that the other end is located in the cistern tank, and an air vent pipe having one end connected to the hot water outlet pipe. In the hot water heating apparatus in which the air vent hole for the heat exchange outlet pipe is formed in the portion located at the position, the other end of the air vent pipe is connected to the heat exchange outlet pipe.   The connection point between the other end of the air vent pipe and the heat exchange outlet pipe is provided on the side of the heat exchanger for hot water with respect to the air vent hole for the heat exchange outlet pipe of the heat exchange outlet pipe. The hot water heater according to claim 1.

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