JP2013215642A - Neutralizing apparatus and water heater including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a neutralizing apparatus suppressing unevenness of remaining amount of a neutralizing agent after used for a long time in the neutralizing apparatus in which a meandering neutralizing flow passage having drain flowing from an upper side to a lower side while meandering in right and left directions is formed, and a water heater including the neutralizing apparatus.SOLUTION: A neutralizing apparatus 27 neutralizes drain by making the drain flow in a neutralizing part 43 filled with a neutralizing agent 53. Inside of the neutralizing part 43 is partitioned into a plurality of regions s1, s2, s3 by a plurality of partition walls 54, 55 installed within the neutralizing part 43, and communication parts 56, 57 communicating the regions s1, s2, s3 which located adjacent to each other on tip sides of the partition walls 54, 55 with each other are formed alternately so as to form a meandering neutralizing flow passage 58 in which the drain flows from an upper side to a lower side while meandering in right and left directions. A volume of the region s1 on the upstream side in a flowing direction of the drain out of the regions s1, s2 adjacent to each other is set larger than a volume of the region s2 on the downstream side in the flowing direction of the drain.

Description

  The present invention relates to a neutralization device in which a meandering neutralization flow path through which drains meander in the left-right direction is formed, and a hot water supply device having the neutralization device.

  Some conventional hot water supply apparatuses have a neutralization apparatus 101 as shown in FIG. 6 that neutralizes the drain generated when the combustion gas reaches a temperature below the dew point due to heat exchange by the heat exchanger. The neutralization apparatus 101 includes a container 103 that contains a neutralizing agent 102, a neutralizing portion 104 that is filled with the neutralizing agent 102, and a drain flow that causes drain to flow into the neutralizing portion 104 above the neutralizing portion 104. An inlet 105, a discharge port 106 that discharges the drain after neutralization from the neutralization unit 104 to the outside of the neutralization unit 101, and a neutralization unit 104. A partition wall 108 that divides the interior and forms a neutralization flow path 107 from the drain inlet 105 to the discharge port 106 in a meandering manner. Neutralize to flow toward There is what is physical. (For example, refer to Patent Document 1.)

JP 2010-169293 A

  By the way, in this conventional neutralization apparatus 101, as shown in FIG. 6, the neutralization part 104 is divided into a plurality of regions s10, s20, s30 by a partition wall 108, and is a region close to the drain inlet 105. The amount of drainage of the neutralizing agent 102 increases because the acidity of the drained drain is so strong.

  Here, when the volumes of the plurality of regions s10, s20, s30 have a relationship of s10 = s20 = s30, and each region s10, s20, s30 is filled with the same amount of neutralizing agent 102, In the neutralization apparatus 101 after long-term use, as shown in FIG. 7, the neutralization agent 102 in the region s10, which is the region close to the drain inlet 105, is consumed much and the remaining amount of the neutralization agent 102 is small. The neutralization agent 102 in the region s30 that is close to the outlet 106 is less consumed and the remaining amount of the neutralizing agent 102 is large, and the remaining amount of the neutralizing agent 102 is biased depending on the region after long-term use. If the neutralizing agent 102 remains in the region s20 and the region s30 and the neutralizing agent 102 does not remain in the region s10, the ability to neutralize the drain cannot be secured, and the ability to neutralize the drain decreases. There is a risk of It was those.

  In order to solve the above-mentioned problems, the present invention is configured in particular in claim 1 to circulate the drain produced when the combustion gas is at a temperature lower than the dew point, through the neutralizing section filled with the neutralizing agent. The inside of the neutralization part is partitioned into a plurality of areas by a plurality of partition walls provided in the neutralization part, and the area adjacent to the tip side of the partition wall In the neutralization device in which the meandering-shaped neutralization flow path in which the drains meander in the left-right direction and flows from the top to the bottom while the drain is meandering is formed, Of these, the volume of the upstream area in the drain flow direction is made larger than the volume of the downstream area in the drain flow direction.

  Moreover, in Claim 2, the height of the said area | region upstream in the flow direction of the said drain among the said said adjacent areas is made higher than the height of the said area | region downstream in the flow direction of the said drain, The volume of the upstream area in the drain flow direction is made larger than the volume of the downstream area in the drain flow direction.

  Moreover, in Claim 3, the heat exchanger which heat-exchanges with a combustion part, the combustion gas produced | generated by combustion of this combustion part, and the neutralization apparatus which neutralizes the drain produced | generated by the heat exchange in this heat exchanger The neutralization apparatus according to claim 1 or 2 is used as the neutralization apparatus.

  According to the first aspect of the present invention, the volume of the upstream area in the drain flow direction among the adjacent areas is made larger than the volume of the downstream area in the drain flow direction. Since the amount of neutralizing agent filled in the area on the side is larger than the amount of neutralizing agent charged in the area on the downstream side, it is possible to suppress the bias in the remaining amount of neutralizing agent after long-term use. The neutralization treatment can be performed stably over a long period of time without reducing the ability to neutralize the drain.

  According to the second aspect of the present invention, the height of the upstream region in the drain flow direction is higher than the height of the downstream region in the drain flow direction among the adjacent regions. The neutralizing agent that does not come into contact with the drain can be accommodated efficiently and sufficiently.

  According to the third aspect of the present invention, the combustor, the heat exchanger that exchanges heat with the combustion gas generated by the combustion of the combustor, and the drain generated by the heat exchange in the heat exchanger are neutralized. A hot water supply apparatus having a summing apparatus, wherein the neutralization apparatus according to claim 1 or 2 is used as the neutralization apparatus, thereby providing a hot water supply apparatus having a neutralization apparatus that exhibits the above-described effects. It is something that can be done.

The schematic block diagram which shows the hot water supply apparatus which has the neutralization apparatus of one Embodiment of this invention. The disassembled perspective view of the neutralization apparatus of the same embodiment. The cross-sectional schematic of the neutralization apparatus of the same embodiment. The longitudinal cross-sectional schematic diagram in the neutralization part of the neutralization apparatus of the same embodiment. The principal part enlarged view explaining the flow of the drain in the neutralization apparatus of the same embodiment. The cross-sectional schematic of the conventional neutralization apparatus. The figure explaining the residual amount state of the neutralizing agent after using the conventional neutralization apparatus for a long period of time.

Next, a hot water supply apparatus according to an embodiment of the present invention will be described with reference to FIGS.
1 is a latent heat recovery type vaporization type oil hot water supply apparatus of the present embodiment, 2 is a vaporizer that vaporizes fuel oil such as petroleum, 3 is a vaporizer heater that is provided in the vaporizer 2 and heats the fuel oil to a vaporizable temperature, 4 Is a vaporization temperature sensor that detects the temperature of the vaporizer 2, 5 is a mixing chamber that communicates with the vaporizer 2 and premixes the vaporized gas vaporized by the vaporizer 2 and primary air, and 6 is provided at the bottom of the mixing chamber 5. A mixing chamber heater that heats the mixing chamber 5, a mixing chamber temperature sensor 7 that detects the temperature of the mixing chamber 5, and a combustion unit that communicates with the mixing chamber 5 and burns the premixed gas premixed in the mixing chamber 5. The burner part 9 is a plurality of heat-absorbing fins projected on the burner part 8 on the back surface of the vaporizer 2, and feeds back the combustion heat to the vaporizer 2 so as to suppress the energization amount of the vaporizer heater 3 as much as possible. is there.

  10 is a nozzle for spraying fuel oil to the vaporizer 2, 11 is an electromagnetic pump for pumping fuel oil to the nozzle 10 via an oil feed pipe 12, 13 is a combustion fan, and an inlet and burner of the vaporizer 2 via a blower passage 14. Combustion air that is communicated with the air chamber 16 between the portion 8 and the cover frame 15 and sucked from the suction port 17 is supplied to the vaporizer 2 as primary air for premixing, and the air chamber 16 is supplied with the vaporizer 2. It is supplied as secondary air that passes through the side and is combusted in the burner section 8 from below the mixing chamber 5.

  Reference numeral 18 denotes a heat exchanger accommodated in the combustion chamber 19. The heat exchanger 18 is a fin for recovering sensible heat from the combustion gas generated by the combustion of the burner section 8 and heating water flowing through the primary heat receiving pipe 20. It comprises a tube-type primary heat exchanger 21 and a secondary heat exchanger 23 that recovers latent heat from the combustion gas after passing through the primary heat exchanger 21 and heats the water flowing through the secondary heat receiving pipe 22. The primary heat exchanger 21 is disposed above the section 8, and the secondary heat exchanger 23 is disposed above the primary heat exchanger 21. The primary heat exchanger 21 and the secondary heat exchanger 23 The combustion gas that has passed in sequence is exhausted out of the hot water supply device 1 through the exhaust port 24.

  25 is a drain receiver that recovers the drain that is generated when the water vapor in the combustion gas exchanges heat with the water flowing through the secondary heat receiving pipe 22 of the secondary heat exchanger 23 to a temperature below the dew point. 25 is disposed above the primary heat exchanger 21 and below the secondary heat exchanger 23, and here, a corrosion-resistant housing (not shown) constituting the secondary heat exchanger 23. The bottom plate is a drain receiver 25. A drain pipe 26 guides the drain collected by the drain receiver 25 to the neutralizing device 27.

  28 is a water supply pipe for circulating water supplied from a water supply source to the heat exchanger 18, 29 is for circulating hot water heated by the heat exchanger 18, and hot water is supplied to a hot water tap (not shown) provided at a predetermined location. The hot water supply pipe 30 is a water supply bypass pipe branched from the water supply pipe 28, and hot water is supplied through the primary heat receiving pipe 20, the secondary heat receiving pipe 22, the water supply pipe 28, the hot water supply pipe 29, and the water supply bypass pipe 30. It constitutes a circuit.

  A mixing valve 31 is provided at a connecting portion between the hot water supply pipe 29 and the water supply bypass pipe 30, mixes hot water from the hot water supply pipe 29 and water from the water supply bypass pipe 30, and 32 can change the mixing ratio. 28 is a water supply temperature sensor that detects the temperature of the water supply, 33 is a flow rate sensor that is provided in the water supply pipe 28 and detects the flow rate, and 34 is a temperature sensor that is provided in the hot water supply pipe 29 and that is heated by the heat exchanger 18. A heat exchange outlet temperature sensor 35 is a hot water supply temperature sensor that is provided in the hot water supply pipe 29 and detects the temperature of the hot water mixed by the mixing valve 31.

  36 is a control means for controlling the driving of each actuator such as the carburetor heater 3, the mixing chamber heater 6, and the combustion fan 13 by receiving signals from the sensors of the latent heat recovery type vaporized petroleum hot water supply apparatus 1 mainly using a microcomputer. It is.

  Reference numeral 37 denotes a remote controller that is communicably connected to the control means 36 and performs a remote device of the latent heat recovery vaporization type petroleum hot water supply device 1. The remote control 37 is an operation that instructs on / off operation of the latent heat recovery type vaporization type petroleum hot water supply device 1. An operation unit 39 including a switch 38 and a hot water supply temperature setting switch for setting the hot water supply temperature is provided.

  Next, the neutralizing device 27 will be described with reference to FIGS. 2 to 4. Reference numeral 40 denotes a box-shaped container, which is a blow molded product made of synthetic resin, and includes an upper wall portion 40 a, a bottom wall portion 40 b, and a plurality of them. Side wall portions 40c to 40f, and the inside of the container 40 is upstream of the standing wall 41 by a standing wall 41 extending vertically from the bottom wall portion 40b of the container 40 toward the upper wall portion 40a side of the container 40. The water sealing part 42 on the side and the neutralization part 43 on the downstream side of the standing wall 41 are roughly divided, and the neutralizer 27 removes the drain from the drain pipe 26 to the upper wall part 40a on the water sealing part 42 side. An introduction port 44 for introduction into the inside is provided, and a discharge port 45 for discharging drain to the outside of the neutralization device 27 is provided below the side wall portion 40d on the neutralization unit 43 side. The standing wall 41 is formed when the container 40 is blow molded.

  The water sealing portion 42 has a hanging wall 46 extending vertically from the top wall portion 40 a of the top surface of the water sealing portion 42 toward the bottom wall portion 40 b of the bottom surface of the water sealing portion 42. The water sealing portion 42 is partitioned into a first water sealing chamber 47 upstream of the drooping wall 46 and a second water sealing chamber 48 downstream of the drooping wall 46, A water-sealed communication portion 49 that connects the first water-sealed chamber 47 and the second water-sealed chamber 48 is formed. The most upstream side of the first water sealing chamber 47 communicates with the introduction port 44. The hanging wall 46 is formed when the container 40 is blow molded.

  50 is provided on the bottom wall portion 40b on the water sealing portion 42 side, and is a water outlet for draining drainage accumulated in the water sealing portion 42 for prevention of freezing and the like, and 51 is for closing the water outlet 50 at normal times. It is a water tap.

  52 is a drain inlet through which the water sealing portion 42 and the neutralizing portion 43 communicate with each other at the upper end side of the standing wall 41 and the drain from the water sealing portion 42 flows into the neutralizing portion 43 from the upper portion of the neutralizing portion 43; The drain inlet 52 is located above the lower end of the hanging wall 46 of the water seal portion 42.

  The neutralizing section 43 is filled with a neutralizing agent 53 made of particles such as calcium carbonate for neutralizing the drain flowing from the drain inlet 52, and the inside of the neutralizing section 43 is neutralized. The partition 43 is partitioned into a plurality of regions s1 to s3 by a plurality of partition walls 54 and 55 provided in a substantially horizontal direction from one side wall to the other side wall side and from the other side wall to the one side wall side. From the drain inlet 52 to the outlet 45 through which the drains meander in the left-right direction and circulate from top to bottom while alternately communicating with the upper and lower adjacent regions 56 and 57. The meandering neutralization flow path 58 is formed. In addition, although the neutralizing part 43 is filled with the neutralizing agent 53 over substantially the whole area, in order to emphasize a code | symbol in FIG. 3, a part is abbreviate | omitted.

  The partition walls 54 and 55 extend from the upper part of the standing wall 41 as one side wall of the neutralizing part 43 toward the side wall part 40d as the other side wall of the neutralizing part 43 in a substantially horizontal direction. 54 and the first partition wall 54 at a position below the side wall portion 40d as the other side wall of the neutralizing portion 43 and extending in a substantially horizontal direction from the lower portion of the side wall portion 40d as the other side wall toward the standing wall 41 side as one side wall of the neutralizing portion 43 The regions s1 to s3 are formed between the first partition wall 54 and the upper wall portion 40a of the neutralization portion 43 top surface and communicate with the drain inlet 52. The first neutralization region s1 is formed between the first partition wall 54 and the second partition wall 55, and the first neutralization region s1 via the first communication portion 56 on the tip side of the first partition wall 54. It is formed between the second neutralization region s2 that communicates with the second partition wall 55 and the bottom wall portion 40b on the bottom surface of the neutralization portion 43. The second partition wall 55 includes a third neutralization region s3 that communicates with the second neutralization region s2 via the second communication portion 57 on the distal end side of the second partition wall 55, and includes the first neutralization region s1 and the second neutralization region. Comparing the volumes of the region s2 and the third neutralization region s3, the relationship of the first neutralization region s1> the second neutralization region s2> the third neutralization region s3 is established.

  Specifically, the first neutralization region s1, the second neutralization region s2, and the third neutralization region s3 are in the longitudinal direction of the first neutralization region s1 and the longitudinal direction of the second neutralization region s2. The length and the length in the longitudinal direction of the third neutralization region s3 are substantially the same length, the width in the short direction of the first neutralization region s1, the width in the short direction of the second neutralization region s2, and the third medium. The width of the sum area s3 in the short direction is substantially the same, and the height of the first neutralization area s1, the height of the second neutralization area s2, and the height of the third neutralization area s3 are compared. It has a relationship of region s1> second neutralization region s2> third neutralization region s3, and when the volumes of the neutralization regions are compared due to the difference in height, the first neutralization region s1> the first neutralization region. 2 neutralization region s2> third neutralization region s3. Further, here, the contact area where the drain contacts the neutralizing agent 53 is set to be approximately the same in each neutralization region. The amount filled with the neutralizing agent 53 has a relationship of first neutralization region s1> second neutralization region s2> third neutralization region s3.

  Further, the most downstream side of the third neutralization region s3 communicates with the discharge port 45, and the neutralization agent 53 is prevented from flowing out from the third neutralization region s3 to the discharge port 45. A neutralizing agent outflow prevention member (not shown) may be provided.

  Further, a first upper convex portion 59 that protrudes upward from the first partition wall 54 is integrally formed at the tip of the first partition wall 54, and the first upper convex portion 59 provides a drain. A small amount is stored on one partition wall 54. In addition, a first lower convex portion 60 that protrudes downward from the first partition wall 54 is integrally formed at the tip of the first partition wall 54. This is a structure that prevents the back of the one partition wall 54 from going around.

  Similarly to the first partition wall 54, a second upper protrusion 61 that protrudes upward from the second partition wall 55 is integrally formed at the tip of the second partition wall 55. Due to the presence of the portion 61, a small amount of drain is stored on the second partition wall 55. The second partition wall 55 is integrally formed with a second lower projecting portion 62 projecting downward from the second partition wall 55 at the tip of the second partition wall 55, and the second lower projecting portion 62 provides a drain. This is a structure that prevents the two partition walls 55 from going around.

  Here, the first partition wall 54, the second partition wall 55, the first upper convex portion 59, the first lower convex portion 60, the second upper convex portion 61, and the second lower convex portion 62 are formed during blow molding of the container 40. As shown in FIG. 4, the first partition wall 54 is formed in the longitudinal direction of the first partition wall 54 in order to obtain a draft for extracting the mold from the blow molded container 40. A downward slope is provided toward the groove portion on the central axis, and the back surface of the first partition wall 54 is upwardly inclined toward a peak portion on the central axis in the longitudinal direction of the back surface of the first partition wall 54. . Similarly to the first partition wall 54, the second partition wall 55 has a downward slope toward the groove on the central axis in the longitudinal direction of the second partition wall 55, and the back surface of the second partition wall 55 is The second partition wall 55 has an upward slope toward the peak on the central axis in the longitudinal direction of the back surface. In FIG. 4, a part of the neutralizing agent 53 is omitted for emphasizing the reference numerals.

  Further, as shown in FIG. 4, the upper end of the first upper protrusion 59 has a width direction of the first neutralization region s1 at least higher than the highest position of the descending slope of the first partition wall 54. It is located so as to cross, and has a downward slope toward the groove portion that is coaxial with the groove portion of the first partition wall 54. Further, the upper end of the second upward convex portion 61 is positioned so as to cross the width direction of the second neutralization region s2 at least higher than the highest position of the downward gradient of the second partition wall 55. And has a downward slope toward the groove portion coaxial with the groove portion of the second partition wall 55.

  Further, as shown in FIG. 4, the lower end of the first lower convex portion 60 is located at a position lower than the lowest position among the upward gradients on the back surface of the first partition wall 54, in the width direction of the second neutralization region s2. And has an upward slope toward a ridge that is coaxial with the ridge on the back surface of the first partition wall 54. Here, since the drain on the first partition wall 54 mainly flows over the vicinity of the groove portion of the first upper convex portion 59, the first lower convex portion 60 is provided with the first partition in order to prevent a drain shortcut. At the tip of the wall 54, it is necessary to form at least the periphery of the peak portion on the back surface of the first partition wall 54 corresponding to the groove portion of the first upward convex portion 59. Further, the lower end of the second lower convex portion 62 is positioned so as to cross the width direction of the third neutralization region s3 at a position lower than the lowest position of the upward gradient on the back surface of the second partition wall 55. In other words, the second partition wall 55 has an upward slope toward a peak portion that is coaxial with the peak portion on the back surface. Here, since the drain on the second partition wall 55 mainly flows over the vicinity of the groove portion of the second upper convex portion 61, the second lower convex portion 62 is provided with the second partition in order to prevent a drain shortcut. At the tip of the wall 55, it is necessary to form at least the periphery of the peak portion on the back surface of the first partition wall 54 corresponding to the groove portion of the second upward convex portion 61.

  Next, 63 is formed on the top wall portion 40 a of the top surface of the neutralizing portion 43, and a neutralizing agent inlet for introducing the neutralizing agent 53 into the neutralizing portion 43. A neutralizer stopper that is disposed in the vicinity of the drain inlet 52 of the first neutralization region s1 before being filled with the neutralizer 53 and has corrosion resistance to prevent the neutralizer 53 from entering the water seal portion 42 side. The drain that flows into the first neutralization region s1 from the drain inlet 52 passes through both sides of the neutralizer stopper member 64.

  A lid body 65 is placed on the upper wall portion 40 a other than the upper wall portion 40 a provided with the introduction port 44, and has a configuration in which the neutralizing agent inlet port 63 is closed by the lid body 65. The lid 65 is made of metal and has conductivity.

  A water sealing electrode 66 is provided in the first water sealing chamber 47 and is a water level detection means comprising a pair of electrodes for detecting when the water level of the drain or the like liquid in the water sealing part 42 has risen to a predetermined level. The pair of water-sealed electrodes 66 has substantially the same length and hangs downward from the upper wall portion 40a of the top surface of the first water-sealed chamber 47, and the lower ends thereof are located above the lower ends of the hanging walls 46. When the water seal electrode 66 detects the liquid level, the water seal communication portion 49 is sealed with the liquid stored in the water seal portion 42. Can detect that the combustion gas does not leak from the neutralizer 27, that is, the neutralizer 27 is in a water-sealed state.

  A pair of wirings (not shown) for applying a voltage to the water sealing electrode 66 is connected to the upper side of the pair of water sealing electrodes 66, and when a voltage is applied to the pair of wirings, a pair is connected. If the tip of the water-sealed electrode 66 is submerged in the liquid in the water-sealed portion 42, it is detected that the water-sealed electrode 66 is electrically connected and a current flows and the neutralizing device 27 is in the water-sealed state. If the tip portions of the pair of water-sealed electrodes 66 are not immersed in the liquid in the water-sealed portion 42 when a voltage is applied to the pair of wires, no current flows and the neutralizing device 27 is not in the water-sealed state. This is to detect an abnormal state.

  67 is a first abnormal water level detection electrode as a water level detection means provided in the first water sealing chamber 47 for detecting when the water level of the drain or the like liquid in the first water sealing chamber 47 has risen to a predetermined water level. The lower end of the first abnormal water level detection electrode 67 is located above the lower end of the water seal electrode 66 and is located near the upper wall portion 40a of the top surface of the first water seal chamber 47, and the first abnormal water level detection electrode 67 is Detecting an abnormal water level of the drain in order to prevent the drain from overflowing from other than the outlet 45 due to the rise of the drain water level in the neutralizing device 27 when clogging with dust etc. occurs in the neutralizing device 27 It is.

  68 is a second abnormal water level detection electrode serving as a water level detection means for detecting when the water level of the drain or the like liquid in the second water sealing chamber 48 has risen to a predetermined water level. The lower end of the second abnormal water level detection electrode 68 is located above the upper end of the upright wall 41 and is located in the vicinity of the upper wall portion 40a of the top surface of the second water sealing chamber 48. In order to prevent the drain from overflowing from other than the outlet 45 due to the rise of the drain water level in the neutralization device 27 when clogging with dust etc. occurs in the summing device 27, it detects an abnormal water level of the drain. is there.

  69 is provided in the 1st neutralization area | region s1 of the neutralization part 43, and the 3rd abnormal water level as a water level detection means which detects this when the water level of drains etc. in the neutralization part 43 rises to a predetermined water level. In the detection electrode, the lower end of the third abnormal water level detection electrode 69 is located above the upper end of the standing wall 41 and is located in the vicinity of the upper wall portion 40a of the top surface of the neutralizing portion 43. The third abnormal water level detection electrode 69 is Detecting an abnormal water level of the drain in order to prevent the drain from overflowing from other than the outlet 45 due to the rise of the drain water level in the neutralizing device 27 when clogging with dust etc. occurs in the neutralizing device 27 It is.

  69 is provided in the 1st neutralization area | region s1 of the neutralization part 43, and the 3rd abnormal water level as a water level detection means which detects this when the water level of drains etc. in the neutralization part 43 rises to a predetermined water level. In the detection electrode, the lower end of the third abnormal water level detection electrode 69 is higher than the upper end of the standing wall 41 and is located in the vicinity of the upper wall portion 40a of the neutralization portion 43, and the third abnormal water level detection electrode 69 is In order to prevent the drain from overflowing from other than the outlet 45 due to the rise of the drain water level in the neutralization device 27 when clogging with dust etc. occurs in the summing device 27, it detects an abnormal water level of the drain. is there.

  Each of the first abnormal water level detection electrode 67, the second abnormal water level detection electrode 68, and the third abnormal water level detection electrode 69 is composed of a stainless steel screw member having corrosion resistance. The lid 65 can be fixed on the upper wall 40a of the container 40 by screwing it into a hole formed at a predetermined location of the wall 40a.

  In addition, a wiring (not shown) for applying a voltage to any one of the first abnormal water level detection electrode 67, the second abnormal water level detection electrode 68, and the third abnormal water level detection electrode 69 is provided on the upper side. Here, it is assumed that the wiring is connected to the first abnormal water level detection electrode 67, and when a voltage is applied to the wiring, not only the first abnormal water level detection electrode 67 but also the conductivity is increased. A voltage is also applied to the second abnormal water level detection electrode 68 and the third abnormal water level detection electrode 69 via the lid 65 having the same. Here, the cathode of the water seal electrode 66 is the ground electrode, and all of the first abnormal water level detection electrode 67, the second abnormal water level detection electrode 68, and the third abnormal water level detection electrode 69 are anodes. When a voltage is applied to the wiring, the tip of at least one of the first abnormal water level detection electrode 67, the second abnormal water level detection electrode 68, and the third abnormal water level detection electrode 69 is submerged in the liquid. If so, it is detected that the current flows between the electrodes, the current flows, and the water level of the liquid in the neutralizing device 27 is abnormally raised, and the first abnormal water level detection electrode 67 and the second abnormal water level detection electrode If neither electrode 68 nor the third abnormal water level detection electrode 69 is immersed in the liquid, no current flows, and the liquid level in the neutralizing device 27 is detected to be in a normal state.

Next, the operation of the latent heat recovery type vaporized petroleum hot water supply device 1 of this embodiment will be described.
When the operation switch 38 of the remote control 37 is turned on, the control means 36 controls the vaporizer heater 3 based on the temperature detected by the vaporization temperature sensor 4 and mixes based on the temperature detected by the mixing chamber temperature sensor 7. The chamber heater 6 is controlled to preheat the vaporizer 2 and the mixing chamber 5, the temperature at which the vaporizer 2 can vaporize the fuel oil, for example, the temperature of the vaporizer 2 is maintained at 220 ° C. to 225 ° C. It will be in the standby state in which temperature is maintained at 125 to 130 degreeC. In this standby state, when a combustion request is generated, the burner unit 8 can be quickly ignited, and the power consumption during standby can be reduced by maintaining the necessary minimum temperature.

  In the standby state, when the control means 36 determines that the hot water tap is opened and the flow rate sensor 33 detects a flow rate equal to or higher than the minimum operating flow rate and a combustion request is generated, the carburetor heater 3 and the mixing chamber heater 6 are turned on. The ignitability is improved by forcibly turning on, the electromagnetic pump 11 and the combustion fan 13 are driven, the vaporized gas vaporized in the vaporizer 2 and the primary air are premixed in the mixing chamber 5, and the premixed gas is It is ejected from the burner part 8 to start combustion.

  The combustion gas generated by the combustion of the burner section 8 flows through the primary heat exchanger 21, passes through the primary heat exchanger 21, then flows through the secondary heat exchanger 23, and passes through the secondary heat exchanger 23. After that, the latent heat recovery type vaporized petroleum hot water supply device 1 is discharged from the exhaust port 24. Further, the water supplied from the water supply source is led from the water supply pipe 28 to the secondary heat receiving pipe 22 and circulates in order from the secondary heat receiving pipe 22 to the primary heat receiving pipe 20 where it is heated by heat exchange with the combustion gas. Then, the hot water led from the primary heat receiving pipe 20 to the hot water supply pipe 29 and adjusted to the hot water supply set temperature by adjusting the opening of the mixing valve 31 is finally supplied from the hot water tap.

  At this time, in the secondary heat exchanger 23, the water generated through the heat exchange between the water flowing through the secondary heat receiving pipe 22 and the combustion gas and the water vapor in the combustion gas being below the dew point is the drain receiver 25. And flows into the neutralization device 27 from the introduction port 44 through the drain pipe 26.

  Then, the drain that has flowed into the neutralization device 27 from the introduction port 44 passes through the second water sealing chamber 48 from the first water sealing chamber 47 of the water sealing portion 42, and the water sealing portion 42 and the neutralizing portion 43. From the drain inlet 52 at the top of the neutralizing section 43 communicating with the neutralizing section 43 filled with the neutralizing agent 53 and flowing through the neutralizing flow path 58 from the top to the bottom while meandering in the left-right direction. After being neutralized by the neutralizing agent 53, the water is discharged from the discharge port 45 to the outside of the neutralizing device 27 and drained into sewage at a predetermined location. In addition, when installing the latent heat recovery type vaporization type hot water supply apparatus 1 indoors, before starting the first operation of the latent heat recovery type vaporization type hot water supply apparatus 1 so that the combustion gas is not discharged indoors, Water is supplied to the water seal portion 42 until 66 detects the water seal state, and the neutralizing device 27 is set in a water seal state in advance.

  Next, the flow of drain in the neutralizing section 43 will be described in detail with reference to FIG. 5, but the neutralizer 53 is omitted in FIG. 5 in order to emphasize the drain flow and the sign. The drain that has flowed over the upright wall 41 and has flowed into the first neutralization region s1 of the neutralization portion 43 from the drain inlet 52 is stored on the first partition wall 54, and the main wall of the first neutralization region s1 is stored. The first partition wall 54 is neutralized in contact with the neutralizing agent 53. Here, the first partition wall 54 is provided with a first upper projection 59 at the tip thereof, so that the first partition A small amount of drain is stored on the wall 54, and the neutralized drain is stored on the first partition wall 54, and flows into the first partition wall 54 from the drain inlet 52. The strongly acidic drain is mixed with and diluted with the neutralized drain stored on the first partition wall 54 to promote neutralization of the drain. Since the contact area between the drain per unit length of the partition wall 54 and the neutralizing agent 53 increases, The ability to neutralize is improved, and the neutralization portion 43 and thus the neutralization device 27 can be made compact. In addition, both ends of the first neutralization region s1 in the width direction, that is, the first partition wall 54 Since the drain contacts the neutralizing agent 53 at both ends in the short-side direction and the drain and the neutralizing agent 53 contact almost the entire area on the first partition wall 54, the first neutralization agent 53 is not consumed. The neutralizing agent 53 in the neutralization region s1 can be reduced uniformly, and the ability to neutralize drain does not decrease.

  When the drain accumulates more than the height of the first upper convex portion 59 on the front end side of the first partition wall 54, the drain gets over the first upper convex portion 59 and flows down onto the second partition wall 55. However, here, by providing the first lower protrusion 60 at the tip of the first partition wall 54, as shown in FIG. 5, the drain flows as indicated by the black arrow in the figure, so the drain is first It is possible to prevent the shortcut of the drain in the neutralization flow path 58 by preventing the partition wall 54 from going around, and sufficient neutralization processing is performed without reducing the neutralization processing time.

  Similarly to the first partition wall 54, a second upper convex portion 61 is also provided on the distal end side of the second partition wall 55, whereby a small amount of drain is stored on the second partition wall 55. Thus, drainage that has been neutralized to some extent is stored on the second partition wall 55, and the drain that has newly passed through the first communication portion 56 is somewhat stored on the second partition wall 55. The neutralized drain is mixed and diluted so that neutralization of the drain is promoted, and the contact area between the drain and the neutralizing agent 53 per unit length of the second partition wall 55 is further increased. Therefore, the ability to neutralize the drain is improved, and the neutralization part 43 and thus the neutralization device 27 can be made compact. In addition, both ends in the width direction of the second neutralization region s2, that is, the first Drain to the neutralizer 53 at both ends of the partition wall 55 in the short direction Since the drain and the neutralizing agent 53 are in contact with each other over almost the entire area of the second partition wall 55, the neutralizing agent 53 in the second neutralizing region s2 is uniformly reduced without the consumption of the neutralizing agent 53 being offset. And the ability to neutralize the drain does not decrease. Further, the second partition wall 55 is provided with a second lower convex portion 62, thereby preventing the drain from flowing around to the back surface of the second partition wall 55 and preventing a drain shortcut in the neutralization flow path 58. It is possible to carry out a sufficient neutralization treatment without reducing the neutralization treatment time.

  Moreover, in this embodiment, the volume of the 1st neutralization area | region s1, the 2nd neutralization area | region s2, and the 3rd neutralization area | region s3 of the neutralization part 43 is 1st neutralization area | region s1> 2nd neutralization area | region s2>. The relationship between the third neutralization region s3 and the amount filled with the neutralizing agent 53 also has the relationship of the first neutralization region s1> the second neutralization region s2> the third neutralization region s3. Thus, among the regions adjacent to the upper and lower sides of the neutralizing section 43, the volume of the upstream region in the drain flow direction is made larger than the volume of the downstream region in the drain flow direction. The volume of the first neutralization region s1 closer to 52 is larger. Here, the drain in the neutralizing section 43 is more acidic as it is closer to the drain inlet 52 side, and is closer to neutral as it is closer to the outlet 45, and the drain acidity in each neutralization region s1, s2, s3. When the degrees are compared, there is a relationship of the first neutralization region s1> the second neutralization region s2> the third neutralization region s3, and the consumption amount of the neutralizing agent 53 increases as the drain acidity increases. From the above, when the consumption of the neutralizing agent 53 is compared in each neutralization region s1, s2, s3, there is a relationship of the first neutralization region s1> the second neutralization region s2> the third neutralization region s3 It is. Therefore, among the regions adjacent to the top and bottom of the neutralization part 43 as described above, the volume of the upstream region in the drain flow direction is made larger than the volume of the downstream region in the drain flow direction. Thus, among the vertically adjacent regions, the amount of the neutralizing agent 53 filled in the upstream region in the drain flow direction is equal to the amount of the neutralizing agent 53 filled in the downstream region in the drain flow direction. After a long period of use, for example, the neutralizing agent 53 in the first neutralization region s1 near the drain inlet 52 is consumed earlier than the neutralizing agent 53 in the second neutralization region s2. That the neutralizing agent 53 in the second neutralizing region s2 is consumed earlier than the neutralizing agent 53 in the third neutralizing region s3 and disappears. Each neutralization region s1, s2, 3 neutralizing agent 53 can be eliminated almost simultaneously, so that the bias of the remaining amount of neutralizing agent 53 after long-term use can be suppressed, and the ability to neutralize drain is not degraded, and it is stable over a long period of time. A neutralization treatment can be performed. In addition, the volume of each neutralization area | region s1, s2, s3 should just be set based on the result of conducting beforehand the experiment which confirms the residual amount of the neutralizing agent 53 when draining is flowed.

  Further, the first neutralization region s1, the second neutralization region s2, and the third neutralization region s3 are specifically the length in the longitudinal direction of the first neutralization region s1 and the length of the second neutralization region s2. The length in the direction and the length in the longitudinal direction of the third neutralization region s3 are substantially the same, the width in the short direction of the first neutralization region s1, the width in the short direction of the second neutralization region s2, and the first length. The widths of the three neutralization regions s3 in the short direction are substantially the same, and the height of the first neutralization region s1, the height of the second neutralization region s2, and the height of the third neutralization region s3 are the first neutralization region. There is a relationship of region s1> second neutralization region s2> third neutralization region s3, and the height is higher in the first neutralization region s1 close to the drain inlet 52, and Among the regions adjacent to each other, the height of the upstream region in the drain flow direction is set higher than the height of the downstream region in the drain flow direction. By making the volume of the upstream area in the direction of flow larger than the volume of the downstream area in the drain flow direction, it is possible to efficiently and sufficiently accommodate the neutralizing agent 53 that does not contact the drain as much as the upstream area. In addition, the neutralization part 43 has the same length in the longitudinal direction of each neutralization region, the width in the short direction of each neutralization region is substantially the same, and the height of each neutralization region. However, since the overall shape is a rectangular parallelepiped, the installation property when the neutralizing device 27 is installed in the instrument is good, and a useless space is not used.

  In addition, the present invention is not limited to the embodiment described above, and in this embodiment, the first upper protrusion 59 and the first lower protrusion 60 are formed at the tip of the first partition wall 54, A second upper convex portion 61 and a second lower convex portion 62 are formed at the tip of the second partition wall 55, but the first upper convex portion 59, the first lower convex portion 60, the second upper convex portion 61, 2 Even if the lower convex portion 62 is not formed, the volume of the upstream region in the drain flow direction among the regions adjacent to the top and bottom of the neutralization portion 43 is the downstream side in the drain flow direction. As long as the volume of the neutralizing agent 53 is larger than the volume of the region and the amount of the neutralizing agent 53 filled in the upstream region is larger than the amount of the neutralizing agent 53 filled in the downstream region. The bias of the remaining amount of the neutralizing agent 53 after long-term use can be suppressed, and the ability to neutralize drain is reduced. Ku, in which an effect that it is possible to perform a stable neutralized for a long period of time.

8 Burner 18 Heat exchanger 27 Neutralizer 43 Neutralizer 53 Neutralizer 54 First partition wall 55 Second partition wall 56 First communication portion 57 Second communication portion 58 Neutralization flow path s1 First neutralization region s2 Second neutralization region s3 Third neutralization region

Claims (3)

  Drain generated when the combustion gas has a temperature below the dew point is neutralized by circulating the neutralizing part filled with the neutralizing agent, and the inside of the neutralizing part is While being partitioned into a plurality of regions by a plurality of partition walls provided in the sum part, the communication portions that communicate with the regions adjacent to the front end side of the partition wall are formed alternately, while the drain meanders in the left-right direction In the neutralization apparatus in which a meandering neutralization flow path that circulates from top to bottom is formed, the volume of the region upstream of the adjacent region in the flow direction of the drain is defined as the flow of the drain. The neutralizing device is characterized in that it is larger than the volume of the downstream region in the direction.   Among the adjacent regions, the height of the upstream region in the drain flow direction is higher than the height of the downstream region in the drain flow direction, and the upstream side in the drain flow direction. The neutralization apparatus according to claim 1, wherein a volume of the region is larger than a volume of the region on the downstream side in the drain flow direction.   A hot water supply apparatus having a combustion section, a heat exchanger that exchanges heat with combustion gas generated by combustion in the combustion section, and a neutralization device that neutralizes drain generated by heat exchange in the heat exchanger. A hot water supply apparatus using the neutralization apparatus according to claim 1 or 2 as the neutralization apparatus.

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