JP6559593B2 - Drain neutralizer - Google Patents

Description

  The present invention relates to a drain neutralization apparatus capable of reliably preventing clogging due to impurities in a drain neutralization tank.

  Conventionally, this type of drain neutralizer has been shipped in advance in a latent heat recovery type combustion apparatus. (For example, refer to Patent Document 1.)

Japanese Patent No. 5367603

  By the way, in this conventional apparatus, when the appliances are horizontally stacked during transportation such as delivery of the combustion apparatus from the production factory to various places, as shown in FIGS. 8 and 9 from the normal posture of FIGS. The neutralizing agent 101 enters the first storage chamber 100 having no partition, and the first storage chamber 100 is finally filled with the neutralizing agent 101 due to vibration during transportation. In the case of being set back to the position, the neutralization agent 101 in the first storage chamber 100 that has become full closes the opening 103 below the auxiliary compartment 102, so that impurities contained in the drain water can be opened. The problem is that drain water leaks out from the drain neutralization tank 104 when the opening 103 is clogged by being accumulated in the portion and the inflow of drain water is prevented.

This invention pays attention to this point, and in order to solve the above-mentioned problem, in particular, the drain water generated when the combustion exhaust gas after burning of the burner falls below the dew point is drained with a neutralizer filled in advance. In the neutralization by circulating the neutralization tank, the drain neutralization tank is provided with a drain water inlet on the upper surface, and the first storage chamber communicates with the inlet centering on the inlet. The first storage chamber is divided into a second storage chamber that communicates with only the lower communication port by the first compartment, and is formed on the left and right sides. Between the inlet and the first storage chamber, A receiving chamber defined by the auxiliary compartment is formed so as to communicate with the first storage chamber only by the opening, and a meandering path connecting the opening and the communication port is formed in the first storage chamber by the first partition and the second partition. and, under the neutralizing agent that has entered the reverse from the communication port of the lower in the first貯室said serpentine path over the first partition In those filled.

  As described above, according to the present invention, a meandering path is formed by the first partition and the second partition in the first storage chamber even when the instruments are horizontally stacked and transported. The movement of the moved neutralizing agent is suppressed, and the opening is reliably prevented from being clogged with the neutralizing agent, so that the opening is not clogged with impurities in the drain water, and the drain water leaks from the drain neutralizing tank. Therefore, a good neutralization treatment can always be performed with peace of mind.

1 is a schematic configuration diagram of a latent heat recovery type water heater according to an embodiment of the present invention. The front view. The same side view. Explanatory drawing of the drain neutralization tank which shows the same normal posture. Explanatory drawing of the drain neutralization tank at the time of the instrument horizontal loading state. The front view of the drain neutralization tank of the normal posture of a prior art example. The side view of the drain neutralization tank of the prior art example. Explanatory drawing in the state of horizontal loading of the drain neutralization tank of the prior art example. Explanatory drawing of the state which returned the drain neutralization tank of the prior art example from the horizontal stacking state to the normal posture.

Next, a latent heat recovery type water heater equipped with a drain neutralizer according to an embodiment of the present invention will be described with reference to the drawings.
1 is an indoor installation type appliance main body, 2 is a burner that is a combustion section that uses petroleum or the like as fuel and generates a downward flame, 3 is a blower that supplies combustion air to the burner 2, and 4 is provided below the burner 2 The combustion chamber 5 is provided in the combustion chamber 4 and is a primary heat exchanging section as a heat exchanging section constituted by a fin tube type heat exchanger that recovers sensible heat of combustion exhaust gas generated by combustion of the burner 2. It is.

  6 is a silencer disposed on the downstream side of the combustion chamber 4 and having one end communicating with the bottom of the combustion chamber 4 to reduce noise associated with the discharge of combustion exhaust gas generated in the burner 2. The other end of the silencer 6 is The secondary heat exchanging portion 7 as a heat exchanging portion formed of a stainless steel box communicates with the exhaust duct 8, and the secondary heat exchanging portion 7 is composed of a heat exchanger that recovers latent heat. Then, heat is exchanged until the combustion exhaust gas that has passed through the silencer 6 falls below the dew point, and drain water is generated. Reference numeral 9 denotes an exhaust passage for discharging the combustion exhaust gas that has passed through the secondary heat exchange unit 7 to the outside of the instrument body 1.

  Reference numeral 10 denotes a drain neutralization tank that communicates with the secondary heat exchange section 7 and temporarily stores the drain water generated in the secondary heat exchange section 7. The drain neutralization tank 10 has a secondary heat exchange section 7 at the center of the upper surface. An inflow port 11 through which drain water flows is provided, the first storage chamber 12 communicating with the inflow port 11 around the inflow port 11, and the first storage chamber 12 is formed only by the lower communication port 13. The communicating second storage chamber 14 is divided into a first partition 15 and formed on the left and right sides. Between the inlet 11 and the first storage chamber 12, only the lower slit-shaped opening 16 has the first storage chamber. A receiving chamber 18 partitioned by an auxiliary partition 17 is formed so as to communicate with the first partition 12, and the first storage chamber 12 has a first partition 19 projecting from the front side to the back side, and conversely from the back side to the front side. A meandering path 21 connecting the opening 16 and the communication port 13 is formed by the protruding second partition 20.

  Further, the second storage chamber 14 of the drain neutralization tank 10 is formed with an outlet 22 for draining drain water after neutralization treatment at the upper part of the side wall, a drain plug 23 at the bottom, and calcium carbonate on the upper face. An inlet 25 for filling the neutralizing agent 24 is formed, and a square-shaped second section 26 is formed at the center.

  27 is a water supply pipe, 28 is a hot water supply pipe, 29 is a water supply bypass pipe branched from the water supply pipe 27, 30 is a mixture in which hot water from the hot water supply pipe 28 and water from the water supply bypass pipe 29 are mixed, and the mixing ratio can be varied. A valve 31, a hot water supply pipe for supplying hot water mixed by the mixing valve 30 to a hot water tap (not shown), 32 a water supply temperature sensor provided in the water supply pipe 27 for detecting the water supply temperature, and 33 a water supply pipe 27 A flow rate sensor 34 for detecting the flow rate is provided, and a hot water supply temperature sensor 34 is provided in the hot water supply pipe 31 for detecting the hot water supply temperature.

Next, the operation of this embodiment will be described.
When the hot water supply tap is opened at an appropriate location and the hot water supply is started, the flow rate sensor 33 detects this flow of water, and when the flow rate exceeds the minimum operating flow rate at which the burner 2 starts to burn, (Not shown) determines that there is a combustion request, and starts combustion of the burner 2 by driving an electromagnetic pump (not shown) or an igniter (not shown). The combustion exhaust gas generated by this combustion flows into the primary heat exchange unit 5, exchanges heat with the feed water in the primary heat exchange unit 5, and the combustion exhaust gas that has passed through the primary heat exchange unit 5 passes from the downward direction to the upward direction in the silencer 6. After making a U-turn and flowing upward into the secondary heat exchange section 7 through the exhaust duct 8, exchange heat with the feed water flowing into the secondary heat exchange section 7, and after passing through the secondary heat exchange section 7 The gas is discharged from the exhaust passage 9 to the outside.

  The hot water whose temperature has risen in the secondary heat exchanging section 7 flows into the primary heat exchanging section 5 where it is further heated by heat exchange with the combustion exhaust gas generated by the combustion of the burner 2 and discharged from the hot water tap as hot water. At this time, the control unit adjusts the combustion amount of the burner 2 and the opening of the mixing valve 30 so that the temperature detected by the hot water temperature sensor 34 becomes the hot water set temperature set by the user.

  The drain water generated by the heat exchange between the feed water and the combustion exhaust gas in the primary heat exchange unit 5 and the secondary heat exchange unit 7 and below the dew point is drained from the secondary heat exchange unit 7 through the inlet 11. After being neutralized by the neutralizing agent 24 stored in the neutralization tank 10 and filled in the drain neutralization tank 10, it is discharged out of the instrument body 1 through the outlet 22.

  Next, in the installation state in the normal posture as described above, as shown in FIG. 4, the neutralizing agent 24 in the drain neutralization tank 10 is filled in the first reservoir with the second reservoir 14 being full. 12 is a state in which the neutralizing agent 24 that has entered in the reverse direction from the lower communication port 13 is filled up to the lower part of the meandering path 21 beyond the first partition 19 is the state when the instrument is shipped.

  When the equipment is horizontally stacked and transported from this normal posture, the drain neutralization tank 101 is in the state shown in FIG. 5, but the neutralizing agent 24 in the first storage chamber 12 is not affected by vibration during transportation. Since it is obstructed by the two partitions 20 and cannot move above the meandering path 21, the opening 16 of the receiving chamber 18 is blocked with the neutralizing agent 24 as in the prior art, so that the opening 16 is clogged with impurities of drain water. It is possible to reliably prevent the occurrence of water leakage, and to obtain a good neutralization treatment with peace of mind over a long period of time.

2 Burner 5 Primary heat exchange section 7 Secondary heat exchange section 10 Drain neutralization tank 11 Inlet 12 First storage chamber 13 Communication port 14 Second storage chamber 15 First section 16 Opening 17 Auxiliary section 18 Reception chamber 19 First partition 20 Second partition 21 Meander path 24 Neutralizing agent

Claims (1)

In the drain neutralization tank, the drain water generated when the combustion exhaust gas after combustion of the burner falls below the dew point is neutralized by circulating a drain neutralization tank filled with a neutralizing agent in advance. The drainage water inlet is provided on the upper surface, the first storage chamber communicating with the inlet centering on the inlet, and the second storage chamber communicating with the first storage chamber only through the lower communication port. And a receiving chamber partitioned by an auxiliary partition so as to communicate with the first storage chamber only by a lower opening between the inlet and the first storage chamber. In addition, the first storage chamber is formed with a meandering path connecting the opening and the communication port by the first partition and the second partition, and the neutralization that has entered the reverse from the communication port below the first storage chamber. The drain neutralizer is filled with the agent beyond the first partition and below the meandering path .

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