JP2010197010A - Vaporizer and latent heat recovery type water heater equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vaporizer for drain capable of easily converting to a vaporization treatment system, not a drain treatment system, with respect to an existing latent heat recovery type water heater, and to vaporize the whole amount of generated drain irrespective of a weather environmental condition. <P>SOLUTION: A vaporization filter 96 is disposed in a vaporization part 95 to which drain is introduced, and vaporization treatment is carried out by an air blow from a blower fan 97 and a heater 98. An exhaust cover part 94 is partitioned on both sides of a bulkhead 934, and combustion exhaust gas is sent therein to carry out indirect heating. A mounting part 932 to an exhaust top of the water heater is integrally provided to enable attachment to the water heater by retrofitting. Vaporization by only air blowing and vaporization by heater heating are combined so that vaporization treatment of the whole amount of drain can be carried out in one day on the basis of data of a daily standard drain generated amount and a relationship table of vaporization capacities per humidity and air temperature. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vaporization device configured to vaporize drain generated during latent heat recovery of combustion exhaust gas in a heat exchanger for latent heat recovery, and a latent heat recovery type hot water supply device including the same, and more particularly to an existing latent heat recovery type. It concerns on what made it possible to install a vaporization apparatus by retrofitting with respect to a hot-water supply apparatus.

  The latent heat recovery type hot water supply device is also referred to as a so-called high-efficiency type hot water heater or a condensing hot water heater, and has a flue gas after heating the incoming water when heating the incoming water by sensible heat of combustion heat. It is a hot water supply device designed to increase the efficiency of heat utilization by further recovering latent heat. Here, condensing means condensation, and the condensation heat (latent heat) is recovered by condensing water vapor contained in the combustion exhaust gas.

  At the time of such latent heat recovery, combustion exhaust gas is condensed to generate strongly acidic drain (condensed water), and various measures are taken for drainage of this drain. In the case of a detached house, although it is possible to drain water indirectly to miscellaneous drainage or rainwater ditches, a drainage drain can be drained through this dedicated standing pipe, especially in apartment buildings. It has been broken.

  However, it is often difficult to install the above-mentioned exclusive stand pipes later in existing apartments aside from newly built apartment houses, and switching from conventional hot water supply equipment to highly efficient latent heat recovery type hot water supply equipment It is an obstacle. In order to deal with such problems, development of drain treatment technology that can eliminate the need for drainage facilities has been demanded, and conventionally various technologies have been proposed as drain treatment technology for that purpose.

  That is, in Patent Document 1, the drain generated in the heat exchanger for recovering latent heat is absorbed by the fabric, and the drain is blown by being diverted from the blower fan for supplying combustion air to the fabric. It has been proposed to vaporize and discharge outside the machine. Patent Document 2 proposes atomizing the drain with ultrasonic waves and discharging it to the outside by blowing air from a blower fan for combustion. In Patent Document 3, it is proposed that the drain collected after forcibly blowing off toward the outside of the machine using the wind force of the combustion fan is similarly evaporated using the wind force of the fan. Yes. In Patent Document 4, it is proposed that the drain is sprayed from the nozzle toward the outside of the apparatus using the discharge pressure of the drain pump for recovering the drain.

JP 2007-85579 A JP 2006-234271 A JP 2005-61792 A JP 2007-101074 A

  However, the technique for treating drain by vaporization (evaporation) has the following disadvantages. That is, when the temperature is low (for example, below freezing) or when the humidity is high, it is difficult to vaporize all of the generated drain within the day, and the drain that has not been vaporized is accumulated daily. As a result, it is impossible to put it to practical use. The lower the temperature is, the more frequently the hot water supply device is used and the amount of generated drain tends to increase. On the other hand, for example, when the temperature is 20 ° C. and the humidity is 30% RH, 0.2 L / h (liter) / 1 hour) vaporization ability, whereas when the temperature is 5 ° C. and the humidity is 90% RH, the vaporization ability decreases to 1/10, such as 0.02 L / h, and the generated drain is completely vaporized. It is expected that there will be no situation. Also, as a factor other than such weather environment conditions, it is conceivable that drainage exceeding the expected amount is generated due to an unexpected operation such as the use of hot water supply. In this case as well, the operation of the hot water supply device itself becomes impossible. The drain may overflow from the hot water supply device to the outside of the machine. On the other hand, although it is conceivable to evaporate the drain by heating the heater, if the energy consumption for heating the heater increases so as to exceed the energy recovery by using the latent heat recovery type hot water supply device, the significance of adopting the technology will be lost. become.

  On the other hand, even if a latent heat recovery type hot water supply device is already installed, drain the water as it is or after neutralizing it and drain it into a drain pipe or the like using drainage equipment in the bathroom. In some cases, it may be desired to change the draining process method to the vaporization process method to eliminate various conveniences associated with drainage. However, since the configuration and equipment related to the drain treatment are built in the hot water supply device, even if the hot water supply device itself is not inconvenient, it is necessary to replace the whole with a new latent heat recovery type hot water supply device adopting a vaporization processing method. There is an excessive burden on the user.

  The present invention has been made in view of such circumstances, and the object of the present invention is not to drain the drainage treatment method but to the drainage treatment method using the vaporization treatment for the existing latent heat recovery type hot water supply device. It is another object of the present invention to provide a vaporizer that can be easily converted into a water vapor, or a latent heat recovery type hot water supply device including the vaporizer, and further, in such a vaporizer, a drain that is generated regardless of weather environment conditions. It is another object of the present invention to be able to perform vaporization control that can vaporize the entire amount.

  In order to achieve the above-mentioned object, the present invention relating to a vaporizer is intended for a vaporizer that vaporizes a drain that is generated in a latent heat recovery heat exchanger of a latent heat recovery type hot water supply device and is led from the latent heat recovery type hot water supply device. The following specific matters shall be provided. That is, a housing, a vaporization portion provided in the housing for vaporizing the drain, a housing of the latent heat recovery type hot water supply device provided in the housing constituting the vaporization portion, or a nearby portion where the housing is installed And a mounting portion for mounting to the mounted portion as a mounted portion (Claim 1).

  In the case of the present invention, it is possible to easily attach to the latent heat recovery type hot water supply device by attaching to the attached portion using the above attachment portion, and by installing, the drain generated in the hot water supply device is guided and vaporized. It becomes possible to process. Therefore, it becomes possible to easily convert the drain treatment method from the waste water treatment to the vaporization treatment with respect to the existing latent heat recovery type hot water supply device, and there is a waste of replacing the entire hot water supply device for changing the drain treatment method. It can be avoided.

  In the above invention, the internal space of the housing is divided into two spaces by a partition wall, and a combustion exhaust gas passage through which combustion exhaust gas is introduced from the latent heat recovery hot water supply device is formed in one space across the partition wall, The vaporization part is formed in the space of the exhaust gas, and as the attachment part, the combustion exhaust gas from the exhaust port of the combustion exhaust gas of the hot water supply apparatus is introduced into the combustion exhaust gas flow path with respect to the casing of the latent heat recovery type hot water supply apparatus. It can be set as the structure attached so that introduction is possible (Claim 2). By doing so, it is possible to easily convert the treatment of drain generated in the latent heat recovery type hot water supply device to the vaporization processing method by simply attaching the vaporization device to the exhaust port of the hot water supply device, and to perform combustion. The residual heat of the combustion exhaust gas introduced into the exhaust gas flow path can be used to heat the drain of the vaporization section, and the vaporization process can be promoted.

  Further, a vaporization filter disposed in the vaporization unit so as to absorb the drain introduced into the vaporization unit, a blower for vaporizing the drain by blowing air to the vaporization filter, and the drain in the vaporization unit indirectly. And a heating means for heating directly or directly (Claim 3). By doing in this way, the specific structure which can implement | achieve a vaporization process reliably is specified. In this case, the housing can be provided with a door that can be opened and closed for replacement of the vaporizing filter (claim 4). By doing in this way, maintenance, such as a maintenance check of a vaporization filter, and replacement | exchange of vaporization filter itself become easy, and it becomes possible easily to maintain the vaporization process of a drain favorably.

  Furthermore, it is possible to provide a vaporization process control means for performing vaporization process control by controlling the operation of the blowing means and the heating means. In this case, as the vaporization processing control means, a drain generation amount detection processing unit that detects a drain generation amount generated within a unit processing period for the vaporization processing, a vaporization capability when the air blowing means is operated, and the heating A vaporization capability detection processing unit that detects the vaporization capability when the means are operated together, and the drain generation amount detected by the drain generation amount detection processing unit and detected by the vaporization capability detection processing unit. Based on the vaporization ability, the additional operation of the heating means is controlled in addition to the air blown by the air blowing means and / or the air blown by the air blowing means so that the total amount of the drain generation amount is vaporized within the unit processing period. (Claim 5). In this case, the air blowing means is operated or the heating means is operated in addition to the air blowing means so that the entire drain generation amount generated within the unit processing period is vaporized within the unit processing period. Become. In other words, when only the air blow by the air blowing means is insufficient, the heating means is additionally operated by the vaporization processing control means, and as a result, the drain in the vaporization section is heated and the vaporization is promoted, thereby shortening the time required for vaporization. Will be. As a result, the total amount of the generated drain is reliably vaporized every unit processing period.

  In this case, the vaporization processing control means includes standard data relating to a standard drain generation amount that is predicted to be generated during the unit processing period as a result of use under standard usage conditions under a predetermined period of weather environment consisting of temperature and humidity. Is stored in advance, and as the drain generation amount detection processing unit, the standard drain generation amount for the corresponding period is calculated from the standard data based on the period to which the present time belongs, and the drain generation amount detection processing unit is based on the calculated standard drain generation amount. It can be set as the structure detected by estimating the drain generation amount which generate | occur | produces in a unit processing period. By doing so, it becomes possible to estimate and predict the drain generation amount for each unit processing period in advance regardless of the weather environment conditions, and the combination of the operation of the air blowing means and the heating means can be reliably determined. As a result, the certainty of control is improved.

  Further, the apparatus further comprises an air temperature detecting means for detecting the air temperature and a humidity detecting means for detecting the humidity. The vaporization processing control means includes a vaporizing capability when only air is blown by the air blowing means, and heating by the heating means. If the relationship table between air temperature and humidity is stored and set in advance for the vaporization ability when the temperature is added, the vaporization capacity detection processing unit uses the air temperature detected by the air temperature detection means and the humidity detection means. Based on the detected humidity, the two types of vaporization capacities can be determined from the relation table and detected (claim 7). By doing in this way, it becomes possible to simply and reliably acquire and detect the vaporization ability when only the air is blown from the blower means and the vaporization ability when heating by the heating means is added thereto.

  About the above vaporization process control means, this can be provided in the controller provided in the said latent heat recovery type hot-water supply apparatus, and the structure by which operation control is carried out by communication connection with this controller is employable. ). In this case, it is possible to easily provide the vaporization processing control means on the controller side by newly installing a control program in the controller on the hot water supply device side, thereby simplifying the configuration on the vaporizer side. It becomes possible to make it.

  In addition, a storage tank for temporarily storing the drain recovered from the latent heat recovery type hot water supply device may be provided at a position upstream of the vaporizing section (claim 9). By doing in this way, since it is temporarily stored in the storage tank before being led to the vaporization section, even if there is a variation in drain generation, it can be absorbed and the vaporization process in the vaporization section can be performed stably. It will be.

  And in invention which concerns on a latent heat recovery type hot-water supply apparatus, the vaporization apparatus in any one of said Claims 1-9 is provided for the latent heat recovery type hot water supply apparatus provided with the heat exchanger for latent heat recovery. (Claim 10). In the case of the present invention, various actions by the above-described vaporizer can be obtained in the latent heat recovery type hot water supply apparatus.

  As described above, according to any of the vaporizers of claims 1 to 9, the vaporizer can be easily attached to the latent heat recovery type hot water supply device by being attached to the attachment portion using the attachment portion. It becomes possible to guide the drain generated in the hot water supply device and to perform the vaporization process. Therefore, it becomes possible to easily convert the drain treatment method from the waste water treatment to the vaporization treatment with respect to the existing latent heat recovery type hot water supply device, and the entire hot water supply device is replaced for the change of the drain treatment method. It becomes possible to avoid waste.

  In particular, according to claim 2, the drain treatment generated in the latent heat recovery type hot water supply device can be easily converted into the vaporization processing method by simply attaching the vaporization device to the exhaust port of the hot water supply device, and the combustion. The residual heat of the combustion exhaust gas introduced into the exhaust gas flow path can be used to heat the drain of the vaporization section, and the vaporization process can be promoted. In addition, it is possible to easily realize the role of an exhaust cover that changes the direction in which combustion exhaust gas is blown from the hot water supply device. By integrating the exhaust cover and the vaporizer, conventional accessories are provided. As a result, it is possible to improve the function of the exhaust cover.

  According to the third aspect of the present invention, the vaporization process can be reliably realized by blowing air to the vaporization filter, and according to the fourth aspect, the vaporization filter replacement door is provided so as to be openable and closable. Thus, maintenance such as maintenance inspection and replacement of the vaporization filter itself can be easily performed, and good maintenance of the drain vaporization process can be easily performed.

  According to the fifth aspect, the blowing means is operated so as to vaporize the entire amount of drain generated within the unit processing period by the vaporization processing control means, or only blowing by the blowing means is performed. In the case of shortage, the heating means can be additionally operated, and as a result, the drain in the vaporization section can be heated to promote vaporization, resulting in a reduction in the time required for vaporization and the total amount of drain generated. Can be reliably vaporized for each unit processing period.

  According to the sixth aspect, it becomes possible to estimate and predict the drain generation amount for each unit processing period in advance regardless of the weather environment condition, and to reliably determine the combination of the operation of the blowing means and the heating means. As a result, the certainty of control can be improved.

  According to the seventh aspect, it is possible to easily and reliably acquire and detect the vaporization ability when only the air is blown from the blower means and the vaporization ability when heating by the heating means is added thereto. .

  According to the eighth aspect, since the vaporization processing control means is provided in the controller on the latent heat recovery type hot water supply apparatus side, the configuration on the vaporization apparatus side can be simplified, and for that purpose. The power supply can be easily secured.

  According to the ninth aspect, the drain recovered from the latent heat recovery type hot water supply device can be temporarily stored in the storage tank before being led to the vaporization section, so that even if there is a variation in drain generation, the drain is absorbed. Thus, the vaporization process in the vaporization unit can be performed stably.

  According to the latent heat recovery type hot water supply apparatus of the tenth aspect, the latent heat recovery type hot water supply apparatus can obtain the effect based on the vaporization apparatus according to any one of the first to ninth aspects.

It is a mimetic diagram showing a 1st embodiment of the present invention. It is explanatory drawing which shows the procedure which assembles a vaporizer in a hot-water supply apparatus with a perspective view. It is the perspective view seen from the front of a vaporizer. It is the perspective view seen from the back of the vaporization apparatus of FIG. FIG. 5A is a cross-sectional explanatory view in a state in which the vaporizer of FIG. 3 is cut in the plane direction, and FIG. 5B is a cross-sectional explanatory view taken along the line AA in FIG. It is a block diagram of a vaporization process control means. It is a numerical table | surface which shows the data of the weather environmental condition and drain generation amount according to the month of a certain area, and the calculation process for completing the vaporization process within one day about this data. It is a figure which shows the relationship table of the humidity according to temperature and vaporization capability about natural vaporization and heater vaporization. It is a figure corresponding to Drawing 3 showing a 2nd embodiment concerning a vaporizer.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a latent heat recovery type hot water supply apparatus 100 in a state where a vaporization processing system 9 including a vaporizer 90 according to an embodiment of the present invention is mounted. This latent heat recovery type hot water supply apparatus 100 is configured as a latent heat recovery type that achieves high efficiency by recovering latent heat from combustion exhaust gas in addition to sensible heat of combustion gas in the combustion heating section. In addition to the hot water supply function, it is configured as a composite heat source machine type having both the hot water circulation heating function, the bath replenishment function, and the bath hot water filling function. In carrying out the present invention, it can be applied as long as it has at least a secondary heat exchanger 1 for recovering latent heat from combustion exhaust gas, and it is not essential to be a composite heat source machine. .

  First, the latent heat recovery type hot water supply apparatus 100 to which the vaporization processing system 9 is applied will be described. In the figure, reference numeral 2 is a hot water supply circuit for realizing a hot water supply function, 3 is a heating circuit for realizing a hot water circulation heating function, 4 is a reheating circuit for realizing a bath reheating function, and 5 is a bath. A pouring circuit for realizing a hot water filling function is also provided. Reference numeral 6 denotes a drain processing circuit for processing the drain generated in the secondary heat exchanger 1 for recovering latent heat, and 7 is an operation control for each of these circuits. It is a controller which performs etc. In the hot water supply apparatus, the hot water of the heating circuit 3 is heated as a heat source, and the bath water of the hot water circuit 4 is heated by liquid-liquid heat exchange heating with the bath heater 41 to perform the hot water heating. Although it is of a type, it is not limited to this, and a reheating is performed with a combustion heating section for reheating (a combustion burner and a heat exchanger heated by the combustion heat of this combustion burner). It may be configured.

  The hot water supply circuit 2 includes a combustion hot burner 21 for hot water supply and a primary heat exchanger 22 for hot water supply for heat exchange heating of the incoming water by the combustion heat of the combustion burner 21 as a combustion heating unit. Is heated mainly in the hot water supply primary heat exchanger 22, and the heated hot water is discharged into the hot water outlet 24. At this time, the water entering from the water inlet 23 is passed through the hot water supply heat exchanging portion 1a constituting the secondary heat exchanger 1 before entering the primary heat exchanger 22. In this heat exchanging portion 1a, the water is preheated by recovering the latent heat from the combustion exhaust gas, and then enters the primary heat exchanger 22 and is mainly heated. Then, the hot water heated to a predetermined temperature and discharged to the hot water supply passage 24 is supplied to a predetermined hot water supply location such as a hot water tap 25 such as a kitchen or a bathroom or the pouring circuit 5. A water flow rate sensor 26, a water temperature sensor 27, and the like are interposed in the water passage 23, and a flow rate control valve 28, a hot water temperature sensor 29, and the like are interposed in the hot water passage 24.

  The hot water supply circuit 2 is provided with a non-latent heat bypass passage 81 that bypasses the hot water supply heat exchanging portion 1a and directly enters the water from the water intake passage 23 into the hot water supply heat exchanger 22. The non-latent heat bypass passage 81 is provided with a non-latent heat bypass valve 82, while water entering the heat exchange portion 1 a is introduced into the water inlet passage 23 on the heat exchange portion 1 a side relative to the branch position of the non-latent heat bypass passage 81. A non-latent heat on-off valve 83 that can shut off and switch off the latent heat recovery is provided. The non-latent heat bypass valve 82 and the non-latent heat on-off valve 83 constitute non-latent heat switching means. In the normal state, the non-latent heat bypass valve 82 is maintained in the closed state and the non-latent heat on-off valve 83 is maintained in the open state. On the other hand, the non-latent heat bypass valve 82 is opened and converted upon receiving a control signal from the controller 7. At the same time, when the non-latent heat on-off valve 83 is closed, the incoming water from the inlet passage 23 is directly supplied to the hot water supply heat exchanger 22 without being supplied to the secondary heat exchanger 1 (the hot water supply heat exchanging section 1a). The water will come in. In other words, the hot water supply heat exchanger 22 is charged and heated without performing latent heat recovery, and the latent heat recovery is temporarily stopped.

  In the illustrated example, only one hot water tap 25 is shown, but there are usually a plurality of hot water taps 25 disposed in the kitchen, washstand, bathroom, and the like. The primary heat exchanger 22 and the primary heat exchanger 32 for heating described later constitute a sensible heat recovery heat exchanger, and are configured by the hot water supply heat exchanger 1a and a heating heat exchanger 1b described later. The secondary heat exchanger 1 constitutes a latent heat recovery heat exchanger.

  The heating circuit 3 includes a heating combustion burner 31 and a heating primary heat exchanger 32 that heats and heats the circulating hot water using the combustion heat of the combustion burner 31, and the heating primary heat exchanger 32. The heating hot water circulation path 33 is passed through.

  The hot water circulation path 33 sends the low temperature water returned to the expansion tank 34 and stored to the inlet of the heating primary heat exchanger 32 by the operation of the heating circulation pump 35, where it is heated by the combustion burner 31. High-temperature water is supplied as a heat source from the high-temperature forward path 33a to the bath heater 41, which is a liquid-liquid heat exchanger, or supplied to a high-temperature heating terminal 37 such as a bathroom dryer via the high-temperature forward header 36. It has become. Further, by the operation of the circulation pump 35, the low-temperature water in the expansion tank 34 is supplied to the low-temperature heating terminal 39 such as a floor heater via the low-temperature forward header 38 and radiates heat from all the heating terminals 37 and 39. The low-temperature water having a low temperature is passed through the return header 40 and the low-temperature return path 33b to the heating heat exchanging portion 1b of the secondary heat exchanger 1 for recovering latent heat and then returned to the expansion tank 34. It is designed to circulate. In the heating heat exchanging portion 1b of the secondary heat exchanger 1, the low-temperature water is returned to the expansion tank 34 in a preheated state by latent heat recovery from the combustion exhaust gas of the heating combustion burner 31.

  Similarly to the hot water supply circuit 2, the heating circuit 3 bypasses the heating heat exchanger 1 b and passes the low temperature water from the low temperature return path 33 b to the heating heat exchanger 32 via the expansion tank 34. Thus, a non-latent heat bypass passage 84 that directly enters water is provided. The non-latent heat bypass passage 84 is also provided with a non-latent heat bypass valve 85. On the other hand, at the position near the heat exchange portion 1b of the low-temperature return passage 33b, the incoming water to the heat exchange portion 1b is cut off and switched to recover the latent heat. A non-latent heat on-off valve 86 that can be stopped is provided. The non-latent heat bypass valve 85 and the non-latent heat opening / closing valve 86 constitute non-latent heat switching means on the heating circuit 3 side. In the normal state, the non-latent heat bypass valve 85 is maintained in the closed state and the non-latent heat on-off valve 86 is maintained in the open state. On the other hand, the non-latent heat bypass valve 85 is converted to open in response to a control signal from the controller 7. When the non-latent heat on-off valve 86 is closed, the low-temperature water from the low-temperature return path 33b is supplied to the heating heat exchanger 32 without being supplied to the secondary heat exchanger 1 (heating heat exchanger 1b). Direct water entry is possible. That is, the recovery of latent heat is temporarily stopped without passing low temperature water through the heating heat exchanging portion 1b.

  In the reheating circuit 4, a bath heater 41 as a liquid-liquid heat exchange type heating unit is interposed in a recirculation circulation path 42 including a return path 42a and a forward path 42b. The bath water returned from B through the return path 42a is sent to the bath heater 41, where the bath heater 41 is reheated by liquid-liquid heat exchange using the high-temperature water on the heating circuit 3 side as a heat source. Hot water is sent to the bathtub B through the outgoing path 42b.

  The pouring circuit 5 includes a pouring passage 51 that has an upstream end branched from the hot water supply circuit 2 and a downstream end joined to the recirculation circuit 3, and a pouring solenoid valve that switches between performing and shutting off pouring by opening and closing switching. 52. The pouring solenoid valve 52 is controlled to be opened and closed by the controller 7, and by pouring, the hot water in the tapping path 24 is poured into the bathtub B via the pouring path 51 and the recirculation circuit 42 (return path 42a). A predetermined amount of hot water filling is performed.

  The drain treatment circuit 6 is configured to remove drainage generated by the combustion exhaust gas being cooled and condensed by heat exchange for latent heat recovery in the secondary heat exchanger 1 (heat exchange unit 1a for hot water supply and heat exchange unit 1b for heating). It is a circuit installed to collect water and discharge it outside the machine.

  In the drain treatment circuit 6 of the embodiment, a neutralization tank 61 is interposed in the middle of the discharge pipe 60, and the drained water is neutralized to flow down to the discharge plug 62. . The neutralization tank 61 is filled with a neutralizing agent (for example, calcium carbonate). Drain collected and collected by the drain pan disposed at the lower position of the secondary heat exchanger 1 is introduced into the neutralization tank 61 from the inlet of the neutralization tank 61 through the discharge pipe 60. Neutralization treatment is performed by contacting with the neutralizing agent while it is flowed to the outlet at the downstream end, and the neutralized drain flows down to the discharge plug 62 through the discharge pipe 60 again.

  The above-described latent heat recovery type hot water supply apparatus has various types of operations such as hot water supply operation, heating operation, hot water filling operation by pouring and pouring, and reheating operation by the controller 7 having MPU, memory and the like and storing various control programs. Operation control is performed based on the output from the remote controller 71 and the outputs from the various sensors described above, and also connected to the vaporization processing system 9 such as the vaporizer 90, the buffer tank 91, the drain pump 92 and the like as will be described later. In addition, drain vaporization process control is also performed for these vaporizers 90 and the like. This vaporization process control will be described in detail after the configuration of the vaporization processing system 9 such as the vaporizer 90 is described.

  As shown in FIG. 2, the vaporization processing system 9 shown in the present embodiment includes a vaporizer 90 that vaporizes drain, a buffer tank 91 as a storage tank that temporarily stores drain that flows out through the discharge plug 62, A drain pump 92 for guiding the drain stored in the buffer tank 91 to the vaporizer 90 is provided. In addition, the vaporizer 90 shown in the present embodiment is configured integrally with an exhaust cover which is a kind of accessory part of the latent heat recovery hot water supply device 100. The exhaust cover is an accessory part for changing the discharge direction of the combustion exhaust gas, and the vaporizer 90 shown in the present embodiment is a case of the hot water supply device 100 (the front cover 10 constituting a part of the case; see FIG. 2). This is intended for an exhaust cover that is mounted so as to communicate with the exhaust top 11 that is open to the top. That is, the vaporizer 90 protrudes rearward from the back plate 931 constituting the housing 93 and is attached by being removably engaged with the outer peripheral rib of the front cover 10 or the opening edge of the exhaust top 11 that is the exhaust port. The exhaust top 11 and an introduction hole 941 to be described later are communicated with each other by being attached to the front cover 10 of the hot water supply device 100 by the mounting portion 932. That is, the mounting portion 932 having the mounting rib as the outer peripheral rib of the front cover 10 or the opening edge of the exhaust top 11 is provided. The buffer tank 91 is provided with a drain water level sensor 910 that detects the water level of the internal drain.

  In order to install the vaporization processing system 9 for the hot water supply apparatus 100, as shown in FIG. 2, the vaporization apparatus 90 is mounted on the front cover 10 as described above, and the buffer tank 91 in which the drain pump 92 is integrally installed is installed. Brackets for a housing (for example, a bottom wall or a side wall) of the hot water supply device 100 and a portion near the housing (for example, a wall portion of the pipe shaft PS or an inner surface of a pipe shaft door (not shown)). Install by means such as. The buffer tank 91 and the discharge plug 62 are connected to each other by a connecting pipe (or connecting hose) 911, and the discharge port 921 of the drain pump 92 and the inlet 933 of the vaporizer 90 are connected to the connecting pipe (or connecting hose) 912. To communicate with each other. Then, the drain water level sensor 910, communication output lines from an air temperature sensor 99a and a humidity sensor 99b described later, and control signal lines such as a blower fan 97, a heater 98, and a drain pump 92 are connected to the controller 7 of the hot water supply apparatus 100. Then, the installation of the vaporization processing system 9 is completed.

  Next, the vaporizer 90 will be described in more detail with reference to FIGS. In the vaporizer 90, the inner space of the housing 93 is divided into two spaces on the back side and the front side by a partition wall 934, and the original function as an exhaust cover is achieved by the space on the back side across the partition wall 934. An exhaust cover portion 94 is formed, and a vaporization portion 95 that vaporizes the drain is formed by the space on the front side. In addition, the partition wall 934 transfers residual heat of the combustion exhaust gas in the exhaust cover portion 94 to the vaporizing portion 95, and heats the drain to be vaporized so as to promote vaporization. A combustion exhaust gas flow path is constituted by the exhaust cover portion 94.

  The exhaust cover portion 94 is formed with an introduction hole 941 that opens to a lower position of the back plate 931 and receives the combustion exhaust gas from the exhaust top 11, while one side end of the housing 93 (the left end in FIG. A blow-out hole 942 is formed as a plurality of slit-like openings on the end surfaces of the right end in FIG. 4 and the left end in FIG. As a result, the flue gas introduced into the inside from the lower position on the back side is blown out from the one side end to the side to change the discharge direction of the flue gas, and the flue gas introduced into the inside is changed. The partition 934 is caused to collide with the partition 934 to heat the partition 934 so as to transfer heat to the vaporization unit 95 side.

  The vaporization unit 95 includes a vaporization filter 96 disposed in an internal space, a blower fan 97 serving as a blower unit installed on an end surface on the other side end of the housing 93 (the right end in FIG. 3 and the right end in FIG. 5). And a heater 98 as a heating means. In addition, as a weather environment detection means for detecting weather environment conditions for drain evaporation control, a temperature sensor 99a (see FIG. 3) as a temperature detection means for detecting the temperature, and a humidity detection means for detecting humidity Humidity sensor 99b.

  The vaporization filter 96 (see FIG. 5) is adapted to promote vaporization by blowing air from the blower fan 97 flowing in from the inlet 951 on the other end side of the housing 93. And the drain vapor | steam vaporized after passage of ventilation is discharged | emitted out of the apparatus from the exit 952 formed as several slit-shaped opening in the end surface of one side end side with the ventilation which passed. The heater 98 is interposed in the air flow path of the blower fan 97 so that the blower can be blown to the vaporization filter 96 after being heated to a predetermined temperature by turning on the heater 98. Further, drain from the buffer tank 91 is introduced through the connection pipe 912 from the inlet 933 at the bottom of the housing 93, and the drain D is introduced into the vaporization section 95 to a predetermined water level.

  The vaporization filter 96 absorbs the drain D upward by capillary action and receives the air blown from the blower fan 97 to vaporize the drain from the surface. For example, the nonwoven fabric sheet, the mesh sheet having a predetermined gap, the fabric -Knitted fabrics are used. As a raw material itself, a nonwoven fabric sheet or a mesh sheet may be formed using rayon having excellent water absorption, cupra having excellent water absorption and durability, polypropylene having acid resistance, polyester, or stainless steel. As a specific structure, for example, a plurality of non-woven sheets 961, 961,... Are integrated in a state where they are arranged in parallel at predetermined intervals, and each non-woven fabric 961 is aligned in a direction connecting the inlet 951 and the outlet 952. The thing arrange | positioned so that the gap | interval between adjacent nonwoven fabrics 961 and 961 may become the passage of the ventilation which goes to the exit 952 from the entrance 951 is mentioned. As shown in FIG. 3 or FIG. 5, the front wall of the housing 93 is provided with a large opening through which the vaporization filter 96 can be put in and out, and a door 953 that closes the vaporization filter 96 so that the vaporization filter 96 can be opened and closed. It can be opened during maintenance.

  The blower fan 97 and the heater 98 can be switched on and off by manual operation, and can be controlled by the controller 7 on the hot water supply apparatus 100 side. If the blower fan 97 is operated while the heater 98 is kept in the non-operating state, the drain of the vaporization filter 96 is vaporized only by the blown air from the blower fan 97 (hereinafter referred to as “natural vaporization”). If the heater 98 is also operated in addition to the fan 97, the drain of the vaporization filter 96 can be vaporized (hereinafter referred to as "heater vaporization") by the air heated to a predetermined temperature.

  Next, the vaporization process control of the vaporizer 90 (vaporizer 95) by the controller 7 on the hot water supply apparatus 100 side will be described. That is, the controller 7 is provided with a vaporization process control means 72 for performing drain vaporization process control as shown in a block diagram of a portion related to vaporization process control in FIG. Based on outputs from the remote controller 71, the temperature sensor 99a, the humidity sensor 99b, and the drain water level sensor 910, each operation control of the blower fan 97, the heater 98, the non-latent heat bypass valves 82 and 85, and the non-latent heat on-off valves 83 and 86 is executed. It is supposed to be.

  The vaporization process control means 72 sets one day (24 hours) as a unit treatment period for the vaporization process, and performs vaporization process control so that the entire amount of drain generated in one day is vaporized within the day. A control unit 73, an avoidance control unit 74 that performs avoidance control for avoiding inconvenience due to generation of an unexpectedly large amount of drain by avoiding generation of further drain when the drain more than a specified amount is generated, A sterilization control unit 75 that performs sterilization control of the vaporization unit 95 and the vaporization filter 96 is provided.

  The vaporization control unit 73 includes a drain generation amount detection processing unit 731, a vaporization capability detection processing unit 732, a learning control unit 733, and a basic data storage unit 734. In the basic data storage unit 734, one-year weather data (temperature and humidity) for each region of the country and standard use conditions at the temperature and humidity (Japan Gas Petroleum Equipment Association JGKAS, JIS S 2071 “ Monthly average values are stored in advance for the standard drain generation amount (predicted daily generation amount) assuming the standard use conditions and standard acceleration mode and test conditions for household gas hot water / oil hot water appliances ”) When the installation area is specified by setting with the remote controller 71, for example, when the hot water supply apparatus is installed, the monthly average value of the weather data and the standard drain generation amount corresponding to the installation area is called and set as standard data to be used thereafter. It has come to be. For example, if “Osaka City” is designated as the installation area, the temperature, humidity and standard drain generation amount (L / day: liter / day) for Osaka City as shown in the left column of FIG. The average value is set as standard data to be used thereafter. In addition, in FIG. 7, the standard drain generation amount at the time of using both hot water supply and heating is shown. In addition, in the basic data storage unit 734, the relationship between the humidity and the vaporization capability of the drain for each of the cases of natural vaporization and heater vaporization for each temperature (environment temperature where the hot water supply device is installed) is determined in advance by a test. A table or relational expression is stored. For example, in the relationship table shown in FIG. 8, the horizontal axis represents humidity, and the vertical axis represents vaporization capacity. The heater vaporization (see the solid line in the figure) and natural vaporization (see the broken line in the figure). ) And vaporization capacity with respect to humidity by temperature (in the case of heater vaporization, it is -5 ° C, 5 ° C, 12 ° C, 20 ° C, and in the case of natural vaporization, each temperature is 5 ° C, 12 ° C, 20 ° C A relational line (relational expression) is defined. In this case, the air is heated to approximately 30 ° C. or more in the heater vaporization.

  The drain generation amount detection processing unit 731 calculates the current month based on the electronic clock, and acquires the standard drain generation amount corresponding to the month from the basic data storage unit 734. On the other hand, the vaporization capability detection processing unit 732 calculates and estimates the corresponding vaporization capability from the relation table based on the actual temperature and humidity detected by the temperature sensor 99a and the humidity sensor 99b. In the case where the detected temperature is an intermediate value of the relationship line shown in FIG. 8, the corresponding vaporization ability may be calculated and calculated by means such as linear interpolation. And the vaporization control part 73 is based on the vaporization capability of both the case of the above-described natural vaporization and heater vaporization, and the standard drain generation amount of the month corresponding to the month to which the present time belongs. A time value for natural vaporization (the blower fan 97 is activated) and a heater vaporization (both the blower fan 97 and the heater 98 are activated) so that the standard drain generation amount generated on the day can be vaporized within the day (within 24 hours). The combination with the time value to be determined is determined and set by trial calculation.

  For example, as shown in the left column of FIG. 7, calculation of the time required for vaporization assuming that the standard drain generation amount (for one day) of each month is vaporized only by natural vaporization (the standard drain generation amount is calculated by vaporization ability). Excluding) January (35.4h), February (32.2h), December (29.9h) exceeded 24h (24 hours), and March (23.2h) required nearly 24h vaporization. It will take time. For this reason, the vaporization amount is calculated when the heater vaporization is added by 3.0 h in January, 2.5 h in February, 0.5 h in March, and 2.0 h in December. Multiply by time). At this time, it is set slightly on the safe side. For example, in January, “0.398 L / h” of the vaporization capability of heater vaporization is multiplied by the vaporization time “3.0 h” to obtain “1.19 L”. If the drain remaining amount obtained by subtracting this from the standard drain generation amount is vaporized by natural vaporization, the vaporization required time is recalculated, and the total time of the natural vaporization time value and the heater vaporization time value is less than 24h. If so, the combination of the natural vaporization time value and the heater vaporization time value is determined as the basic control value. For example, in January, when the drain remaining amount “1.50 L” obtained by subtracting “1.19 L” from the standard drain generation amount “2.69 L” is naturally vaporized, “19.7 h” (1.50 / 0.076 = 19.7) and heater vaporization “3.0 h” is added to “19.7 h” to obtain “22.7 h”. As a result of the above calculation, heater vaporization is used in addition to natural vaporization for the first three months and December, and vaporization processing using only natural vaporization is executed in the other months of April to November. Set to.

  When combining the above-mentioned heater vaporization and natural vaporization, the execution of the heater vaporization is set to a midnight time zone within a day or a time zone when the temperature is high, and the natural vaporization is executed in the remaining time zone. What should I do? This is because the heating cost can be reduced by setting to a midnight time zone where the power cost is low or a high temperature zone where the temperature is high and the vaporization time can be expected to be shortened.

  By performing the vaporization process with the above-described basic control values set initially, the drain generated on that day can be vaporized within that day and not left on the next day. Next, learning control is performed by the learning control unit 733 while performing vaporization processing by the initial setting with the above basic control values. In other words, while accumulating actual data, the basic control values are sequentially corrected based on the actual data, and learning control is performed so as to optimize the heater vaporization time or the total vaporization time. Execute by parallel processing. That is, as the actual weather environment condition, the temperature detected by the temperature sensor 99a and the humidity detected by the humidity sensor 99b are accumulated, and the accumulated actual weather environment condition value (temperature and humidity) and the standard drain generation amount Compared to the weather environment data (monthly average value) that became the basis of the standard, the standard drain generation amount was negatively or positively corrected based on the deviation, and based on the correction amount, the vaporization time value of the heater vaporization was first fixed What is necessary is just to carry out minus correction or plus correction by the amount. In other words, the amount of operation of the heater 98 that leads to the most energy reduction is corrected with a negative correction with priority. In addition to the above-mentioned accumulation of actual weather environment condition values (temperature and humidity) as a learning control by negatively correcting or positively correcting the standard drain generation amount, or such weather environment condition values (temperature and Instead of accumulating (humidity), the drain water level detected by the drain water level sensor 910 in the buffer tank 91 within the most recent predetermined period, the amount of combustion of the combustion burners 21 and 31 within the most recent predetermined period, the combustion time thereof, etc. Based on this, it is also possible to perform a learning control in which the standard drain generation amount is negatively corrected or positively corrected, and the vaporization time value of heater vaporization is corrected based on this correction amount.

  In the above vaporization process, a day different from the standard drain generation amount may come out depending on the daily use situation of the hot water supply apparatus. Although a small amount of generation is good, a large amount of generation may cause inconvenience. For this reason, when the avoidance control unit 74 detects that the generated amount is larger than expected, the non-latent heat bypass valves 82 and 85 are opened and the non-latent heat on-off valves 83 and 86 are closed and converted. Subsequent latent heat recovery is forcibly stopped. That is, control is performed to avoid the occurrence of inconvenience by switching so as not to generate drain. The detection that the generated amount becomes larger than expected, that is, the set upper limit amount or more is performed by detecting that the drain water level sensor 910 of the buffer tank 91 exceeds a predetermined set upper limit water level, for example. In addition, the latent heat amount of the combustion exhaust gas that comes into contact with the secondary heat exchanger 1 is estimated from the combustion time per day of the combustion burners 21 and 31, the combustion capacity thereof, and the incoming water temperature by the incoming water temperature sensor 27. Then, by estimating the amount of drain generation from this amount of latent heat, it is possible to detect the generation of drain above the set upper limit amount.

  The sterilization control unit 75 performs heat sterilization of the vaporization filter 96 and sterilizes by heating by blowing high-temperature air to the vaporization filter 96. Specifically, the air blowing fan 97 and the heater 98 are both operated, and the air temperature is heated by the heater 98 to a sterilization temperature (for example, 60 ° C. or more) at which general bacteria are killed. Let it continue (for example, for a few minutes). The execution of the sterilization control is executed at the end point (start point) of the calculation day for the vaporization process. For example, a time (for example, 3:00 pm) before the bath preparation time at which drainage is most generated may be set as the starting point of the calculation day.

<Second Embodiment>
FIG. 9 shows a vaporizer 90a according to the second embodiment. This second embodiment differs from the first embodiment only in the configuration of the vaporizer 90a, and other configurations, that is, other configurations of the latent heat recovery hot water supply device 100 to be applied and other configurations of the vaporization processing system 9 (buffer tanks). 91, etc.) is the same as that of the first embodiment, and the description of the configuration other than the vaporizer 90a is omitted. Also, the vaporizer 90a will be described mainly with respect to differences from the vaporizer 90 of the first embodiment. The same components as those of the vaporizer 90 of the first embodiment will be denoted by the same reference numerals as those in the first embodiment and overlapped. The description that has been made will be omitted.

  The vaporizer 90a of the second embodiment is the vaporizer 96a of the first embodiment at each point in the vaporization filter 96a to be used, the direction in which the combustion exhaust gas is blown out from the exhaust cover portion 94, and the direction in which the drain vapor is blown out from the vaporizer 95. Different from 90.

  The vaporizing filter 96a of the vaporizing device 90a is configured by, for example, forming a thin cylindrical plate made of ABS resin with a small gap between them and connecting them in a cylindrical shape, and this is formed around the central axis X by a drive motor 96b. It can be rotated. The lower end portion of the vaporization filter 96a is immersed in the drain that flows into the bottom of the vaporization unit 95 and is rotated, so that each thin circular plate holds the drain in the form of a water film. The water film drain is vaporized while rotating. At this time, vaporization is promoted by blowing air from the blower fan 97 or heated air from the blower fan 97 and the heater 98. The drive motor 96b is also provided with a manual switch (not shown) so that it can be switched ON / OFF by manual operation, and the vaporization processing control means 72 of the controller 7 is provided with a control portion thereof.

  Further, the upper half of the partition wall 934a that partitions the inside of the housing 93 of the vaporizer 90a into the exhaust cover portion 94 and the vaporizer portion 95 is formed so as to extend obliquely upward toward the front side, and the blowing hole 942a is formed on the upper surface of the housing 93. It is formed so as to open at a position near the front of the wall. As a result, the combustion exhaust gas introduced into the inside through the introduction hole 941 changes its direction obliquely upward while colliding with the partition wall 934a, and is blown out obliquely upward upward from the blowing hole 942a.

  Further, the outlet 952a of the vaporizing portion 95 is formed so as to open toward the front side at a position above the front wall of the housing 93, and the air blown from the blower fan 97 and the heater 98 installed on the front wall side is vaporized. After the portion 95 is blown into the back and blown to the vaporization filter 96a, it is blown out from the outlet 952a toward the outside front. At this time, the airflow direction plate 952b extending obliquely downward above the outlet 952a is regulated and guided so that the direction of the blowout is obliquely forward and downward. Thereby, the blowing direction of combustion exhaust gas and the blowing direction of the blast containing drain steam are made to be different from each other.

  Such a vaporizer 90a is also subject to vaporization process control by the vaporization process control means 72 of the controller 7 in the same manner as the vaporizer 90 of the first embodiment, whereby vaporization process control can be performed as in the first embodiment. Executed.

<Other embodiments>
The present invention is not limited to the first or second embodiment described above, but includes other various embodiments. That is, in the above-described embodiment, the two-can three-water type latent heat recovery type hot water supply device is shown, but not limited to this, a single can two-water type hot water supply device may of course be used. In addition, a multifunction machine having a heating circuit, a reheating circuit, and a pouring circuit is shown. However, a single-function hot water supply latent heat recovery type hot water supply device, and a combined type latent heat recovery type hot water supply device composed of a hot water supply circuit and a heating circuit For example, the present invention may be applied. Moreover, in the said embodiment, although the thing provided with the secondary heat exchanger 1 which consists of two heat-exchange parts 1a and 1b was shown, it is not restricted to this, either for hot water supply or for heating one secondary heat You may apply this invention to what was provided with the exchanger.

  In the first or second embodiment, the vaporizers 90 and 90a are integrally provided with the exhaust cover portion 94 and the vaporization portion 95. However, the present invention is not limited to this, and the vaporization portion 95 except for the exhaust cover portion 94 is shown. It is good also as a structure of only. In this case, in the same manner as the buffer tank 91, the mounting portion is provided with a housing (for example, a bottom wall or a side wall) of the hot water supply device 100, or a nearby portion (for example, the pipe shaft PS) where the housing of the water heating device 100 is installed. What is necessary is just to set it as the structure which can be attached to this to-be-attached part so that attachment or detachment is possible for a wall part or the inner surface of a pipe shaft door not shown). In this case, a heater 98 may be provided in addition to the blower fan 97.

  In the said 1st or 2nd embodiment, the vaporization process control means 72 is provided in the controller 7 of the hot water supply apparatus 100, and the vaporizer 90, 90a is connected by the controller 7 by connecting with the controller 7 after mounting | wearing with the vaporizer 90, 90a. However, the present invention is not limited to this, and vaporization control means similar to the vaporization control means 72 may be provided on the vaporization apparatuses 90 and 90a side. In addition, even if the controller 7 of the hot water supply apparatus 100 is not initially provided with the vaporization processing control means 72, a control program including the vaporization processing control means 72 at the stage of applying the vaporization processing system 9 including the vaporization apparatuses 90 and 90a. Is newly installed, it is possible to easily realize the vaporization control from the hot water supply apparatus 100 side.

  In the first or second embodiment, the heater 98 is shown as the heating means, and the drain in the vaporizing section 95 is indirectly heated by heating the air blown by the heater 98. However, the present invention is not limited to this. For example, a plate-like heater that generates heat due to electrical resistance is brought into contact with the bottom surface of the housing 93 of the vaporizing unit 95 instead of the heater 98, or a similar heater that has been subjected to waterproofing is immersed in the drain in the vaporizing unit 95. The drain may be directly heated by arranging it. Further, when the exhaust cover portion 94 is integrated with the exhaust cover portion 94, the exhaust cover portion 94 constitutes a heating means, and the drain can be indirectly heated by heat transfer from the combustion exhaust gas. The attachment may be omitted.

  In the said 1st or 2nd embodiment, although the drain pump 92 is included as the vaporization processing system 9, the drain derived | led-out from the hot water supply apparatus 100 seems to be supplied to the vaporization part 95 by the natural flow type based on a gravity effect | action. The drain pump 92 may be omitted if it can be laid out. Further, a water level adjusting means (for example, a valve for restricting inflow) for adjusting the water level so that the drain water level in the vaporizing unit 95 does not exceed a predetermined level is installed in the vicinity of the connection pipe 912 or the inlet 933 with respect to the vaporizing unit 95. It may be.

  In the first or second embodiment, the vaporization processing system 9 including the buffer tank 91 is shown. However, the present invention is not limited to this, and the function similar to the buffer tank 91 (temporary storage) is provided on the latent heat recovery hot water supply device 100 side. The buffer tank 91 may be omitted if a tank that fulfills (1) is provided.

  Although the example which provided the neutralization tank 61 was shown in the said 1st or 2nd embodiment, the vaporizer is not restricted to this, The hot water supply apparatus which does not have the neutralization tank 61 and only the drainage pipe of the drain is installed. May be applied. In this case, the strongly acidic drain is absorbed by the vaporization filters 96 and 96a of the vaporization unit 95 and vaporized as it is.

  In the drain generation amount detection processing unit 731 of the first or second embodiment, the standard data set based on the storage data related to the standard drain generation amount stored and set in the basic data storage unit 734, or the learning control unit 733 Although the drain generation amount is detected based on the correction value of the standard data after correction, the present invention is not limited to this, and the actual weather environment and combustion can be performed without using such standard data and the correction value. You may make it detect and detect the drain generation amount by detecting a state. For example, the temperature detected by the temperature sensor 99a, the humidity detected by the humidity sensor 99b, the combustion amount or combustion time within the latest predetermined period, or the drain water level sensor 910 of the buffer tank 91 within the latest predetermined period. Detection is performed by estimating the amount of drain generated during the current unit processing period (for example, one day) based on a combination of one or more of various actual state detection values such as the drain water level. It may be. Here, the most recent predetermined period may be, for example, 24 hours (one day) of the previous day, or 24 hours of the last week (last week) on the same day of the week as the current day, Alternatively, it may be two or more days instead of one day. In the case of multiple days, if the unit processing period is one day, the average amount of drain generation per day may be used.

  In the first or second embodiment, the non-latent heat bypass passages 81 and 84, the non-latent heat bypass valves 82 and 85 as the non-latent heat switching means, and the non-latent heat on-off valves 83 and 86 are shown. However, the present invention is not limited to this, and the vaporizer may be applied to a hot water supply apparatus in which these elements are not originally installed. In this case, the vaporization processing control means 72 of the controller 7 does not include the avoidance control unit 74.

  In the first or second embodiment, the humidity sensor 99b as the humidity detecting means is installed. However, the present invention is not limited to this, and this may be omitted. In this case, for example, the humidity may be estimated and detected by the amount of change in the water level per unit time of the drain water level sensor 910 that detects the water level of the drain stored in the buffer tank 91. That is, a humidity detection means is comprised by the drain water level sensor 910 and the control element for performing a humidity estimation process from the water level change amount.

  When the temperature sensor 99a detects a weather environment in which the temperature of 10 ° C. or lower continues for a predetermined time (for example, 7 hours) or longer, even if the vaporization process using only natural vaporization is set as the control condition, the heater 98 It is also possible to add a control for forcibly operating the heater to execute the vaporization of the heater for a predetermined time.

  Instead of performing sterilization control by the sterilization control unit 75, or in combination with the sterilization control, an antibacterial agent that elutes silver or copper ions or the like is applied to the vaporization filters 96, 96a, or in the drain. You may make it arrange | position in a submerged state, and you may make it suppress and prevent the propagation of general bacteria.

  The amount of air blown from the blower fan 98 may be adjusted by controlling the rotational speed of the fan motor, and the degree of clogging of the vaporization filters 96 and 96a may be detected depending on the rotational speed fluctuation at a constant output. When the clogging has progressed to the set amount, for example, a warning display for replacement may be displayed on the remote controller 71.

1 Secondary heat exchanger (heat exchanger for latent heat recovery)
10 Front cover (housing)
11 Exhaust top (exhaust port)
91 Buffer tank (storage tank)
93 Housing 94 Exhaust cover (combustion exhaust gas flow path, heating means)
95 Vaporizers 96, 96a Vaporizer Filter 97 Blower Fan (Blower Unit)
98 Heater (heating means)
72 Vaporization control means 73 Vaporization control section 74 Avoidance control section 75 Sterilization control sections 81 and 84 Non-latent heat bypass passages 82 and 85 Non-latent heat bypass valves (non-latent heat switching means)
83, 86 Submersible heat open / close valve (non-latent heat switching means)
99a Temperature sensor (temperature detection means)
99b Humidity sensor (humidity detection means)
100 Latent Heat Recovery Type Water Heater 731 Drain Generation Amount Detection Processing Unit 732 Vaporization Ability Detection Processing Unit 733 Learning Control Unit 734 Basic Data Storage Unit 953 Door 910 Drain Water Level Sensor D Drain

Claims (10)

A vaporizer that vaporizes a drain generated in a latent heat recovery heat exchanger of a latent heat recovery type hot water supply device and led from the latent heat recovery type hot water supply device,
A housing, a vaporization section provided in the housing for vaporizing the drain, a housing of the latent heat recovery type hot water supply device provided in the housing constituting the vaporization section or a portion near the housing. A vaporizing device comprising an attachment portion for attaching to the attached portion as an attachment portion. The vaporizer according to claim 1,
An internal space of the housing is divided into two spaces by a partition wall, and a combustion exhaust gas passage for introducing combustion exhaust gas from the latent heat recovery hot water supply device is formed in one space across the partition wall, and the other space is formed in the other space. Is formed with the above vaporization part,
The attachment portion is configured to be attached to the housing of the latent heat recovery type hot water supply device so that the combustion exhaust gas from the exhaust port of the combustion exhaust gas of the hot water supply device can be introduced into the combustion exhaust gas flow path. Vaporizer. A vaporizing device according to claim 1 or 2, wherein
A vaporization filter disposed in the vaporization unit so as to absorb the drain introduced into the vaporization unit, a blower for vaporizing the drain by blowing air to the vaporization filter, and the drain in the vaporization unit indirectly or A vaporizing device comprising a heating means for directly heating. The vaporizer according to claim 3,
The vaporization apparatus, wherein the housing is provided with a door that can be opened and closed for replacement of the vaporization filter. A vaporizing device according to claim 3 or claim 4, wherein
Further comprising a vaporization process control means for performing vaporization process control by controlling the operation of the blowing means and the heating means,
The vaporization processing control unit combines a drain generation amount detection processing unit that detects a drain generation amount generated within a unit processing period for vaporization processing, a vaporization capability when the blowing unit is operated, and the heating unit. A vaporization ability detection processing unit that detects the vaporization ability when operated
Based on the drain generation amount detected by the drain generation amount detection processing unit and the vaporization capability detected by the vaporization capability detection processing unit, the entire drain generation amount is vaporized within the unit processing period. A vaporizer configured to control the additional operation of the heating unit in addition to the blowing by the blowing unit and / or the blowing by the blowing unit. The vaporization device according to claim 5,
The vaporization processing control means stores in advance standard data relating to a standard drain generation amount that is predicted to be generated during the unit processing period in accordance with the use under the standard use condition under a predetermined period of weather environment consisting of temperature and humidity. Set,
The drain generation amount detection processing unit calculates the standard drain generation amount of the corresponding period from the standard data based on the period to which the present time belongs, and generates the drain generated in the unit processing period based on the calculated standard drain generation amount. A vaporizer configured to detect by estimating an amount. A vaporizing device according to claim 5 or claim 6, wherein
An air temperature detecting means for detecting the air temperature; and a humidity detecting means for detecting the humidity;
In the vaporization processing control means, a relationship table of the temperature and humidity is stored and set in advance for the vaporization ability when only blowing by the blowing means and the vaporization ability when heating by the heating means is added thereto,
The vaporization capability detection processing unit is configured to determine and detect the two types of vaporization capability from the relation table based on the temperature detected by the temperature detection unit and the humidity detected by the humidity detection unit. Constructed vaporizer. A vaporization device according to any one of claims 5 to 7,
The vaporization processing control means is provided in a controller provided in the latent heat recovery type hot water supply apparatus, and is configured to be operated and controlled by communication connection with the controller. A vaporizing device according to any one of claims 1 to 8,
The vaporizer which is provided with the storage tank which stores temporarily the drain collect | recovered from the latent heat recovery type hot-water supply apparatus in the upstream position of the said vaporization part. In the latent heat recovery type hot water supply device equipped with a heat exchanger for latent heat recovery,
A latent heat recovery type hot water supply apparatus comprising the vaporizer according to any one of claims 1 to 9.

Images