JP6544960B2 - Valve unit and valve unit control method - Google Patents

Description

The present invention relates to, for example, a valve used for mixing and distributing a heat medium for performing hot water supply, bath water follow-up, heating, and the like, and control thereof.

For example, in the heat source apparatus having the conventional hot water supply function, the additional function and the heating function, a heat exchanger for heating is installed separately from the heat exchanger for hot water supply as a heat exchanger using combustion heat as a heat source. And a heat exchanger for additional heat exchange. Also, it is known that the heat medium to be heated by the combustion heat is used for the heat exchange of the feed water and the heat exchange of the bath water, as well as the heating medium for the heating, without using the heat exchanger for hot water supply using the combustion heat. (E.g., Patent Document 1).

JP 2007-187419 A

  For example, if the heat medium is heated without installing a hot water supply heat exchanger to be heated by combustion heat, the combustion heat of the burner and the heat medium are exchanged with each other as well as the combustion heat source portion is compacted. Heat exchange between heat and water supply to supply hot water maintains the heat medium at a constant temperature, for example, 80 ° C., and the heat of this heat medium can be heat exchanged to the water supply, thereby avoiding the influence of temperature change of combustion heat It has the advantage of being able to stabilize the tapping characteristics.

  The heat transfer medium is circulated to the heating circuit through the heat transfer circuit to supply the high temperature heat transfer medium to the high temperature heating load such as convector, and the low temperature heat transfer medium to the low temperature heating load such as the floor heating unit. High and low temperature heating must be realized.

  As described above, when realizing the supply of the low-temperature heat medium to the low-temperature heating load, the supply of the high-temperature heat medium to the high-temperature heating load, and the supply of the high-temperature heat medium that exchanges heat with the water supply with a single heat medium, There is a problem that the circuit form and the switching circuit become complicated because the distribution path of the above and the mixing path of the high and low temperature heat medium mixing are required. If the fluid circuit is complicated, not only the facility cost is increased, but also the installation cost for installing the heating circuit in the existing heat source apparatus is increased.

Then, in view of the above-mentioned subject, the object of the present invention is to streamline processing of distribution or mixing of fluid such as high temperature and low temperature heat medium, and to simplify the circulation path of the fluid.

In order to achieve the above object, according to one aspect of the valve unit of the present invention, at least a single valve body, and at least two systems provided to the valve body according to the set distribution ratio of the first fluid A distribution valve unit for distributing the mixture, and a mixing valve unit provided in the valve body for mixing the second fluid and at least one system of the distribution valve unit according to the set mixing ratio; The valve body may be provided with a branch portion between the distribution valve portion and the mixing valve portion for branching a part of the first fluid supplied from the distribution valve portion to the mixing valve portion. .

  In the valve unit, the valve main body may include a connection portion connecting the distribution valve portion and the mixing valve portion and supplying the first fluid from the distribution valve portion to the mixing valve portion.

  In the valve unit, the first fluid is a high temperature heat medium, the second fluid is a low temperature heat medium, and a part of the high temperature heat medium distributed by the distribution valve portion is the low temperature by the mixing valve portion The mixed heating medium may be produced by mixing with the heating medium.

In order to achieve the above object, according to one aspect of a valve unit control method of the present invention, a step of flowing a first fluid and a second fluid in a circulation path provided with a valve unit ; Adjusting the distribution ratio of the distribution valve unit provided in the valve unit, which distributes the fluid of 1 into at least two systems according to the set distribution ratio, the second fluid, and the distribution valve unit Adjusting the mixing ratio of the mixing valve unit provided in the valve unit, mixing at least one system with the first fluid according to the set mixing ratio, and the distribution valve unit in the valve unit And a step of branching a part of the first fluid supplied from the distribution valve unit to the mixing valve unit at a branching unit provided between the first and second mixing valve units.

Barubuyuni' Tomah another invention according to the valve unit control method, one of the following effects can be obtained.

  (1) The first fluid distribution and the first and second fluid mixing can be performed with at least a single valve unit, so that the fluid circulation path can be simplified, the distribution and mixing process can be made efficient, and the heat medium etc. Fluid circulation path can be simplified.

  (2) Since fluid distribution and mixing can be performed with a single valve unit, highly reliable fluid processing can be performed without changing the properties of the fluid such as heat.

  (3) If this valve unit is used, a circulation passage in which the first fluid flows around the valve unit, a circulation passage in which the second fluid flows, and a circulation passage in which the mixed fluid of the first and second fluids flows And the circuit of fluid circulation can be simplified.

(4) Since the valve unit is provided with the distribution valve unit and the mixing valve unit, the processing and circuit system necessary for controlling these can be simplified, and reliable valve control can be realized.

It is a figure showing the valve unit concerning a 1st embodiment. It is a figure showing a heat source device concerning a 2nd embodiment. It is a figure which shows the hot-water supply operation | movement of a heat-source apparatus. It is a figure which shows the follow-up operation | movement of a heat-source apparatus. It is a figure which shows the heating operation of a heat-source apparatus. FIG. 2 is a view showing a hot water supply, additional heating, and a heating device according to a first embodiment. It is a figure which shows a control system. It is a flowchart which shows circulation pump control. It is a flowchart which shows burner combustion control. It is a flowchart which shows hot-water supply control. It is a figure which shows the hot-water supply operation | movement of hot-water supply, a supplementary, and a heating apparatus. It is a figure which shows the follow-up operation | movement of a hot-water supply, a follow-up, and a heating apparatus. It is a figure which shows the heating operation | movement of hot-water supply, additional heating, and a heating apparatus. FIG. 7 is a front view and a plan view of a valve unit according to a second embodiment. It is a figure showing the side and the bottom of a valve unit. It is a figure which shows the XVI-XVI line | wire cross section of B of FIG. FIG. 18 is an exploded perspective view showing a part of the distribution valve portion of the valve unit according to the third embodiment with a portion cut away; FIG. 10 is a view showing a valve unit according to a fourth embodiment. FIG. 16 is a view showing a valve unit according to a fifth embodiment.

First Embodiment

  FIG. 1 shows an example of a valve unit 2 according to the first embodiment. The valve unit 2 is provided with a single valve body 4, and the valve body 4 is provided with a distribution valve portion 6-1 and a mixing valve portion 6-2.

  The distribution valve unit 6-1 receives, for example, the high-temperature heat medium HM1 as a first fluid at the port 8-11, and at least two systems, for example, the port 8-12, receive the heat medium HM1 according to the set distribution ratio. , Distribute to ports 8-13. As an example, the distribution valve portion 6-1 is provided with a valve body 10-1 so as to be rotatable, and in accordance with the rotation of the valve body 10-1, the opening degree θ11 on the port 8-12 side and the port 8- The opening degree θ12 on the 13th side is adjusted, whereby the distribution ratio is controlled.

Mixing valve unit 6-2 receives, as two systems, for example, low temperature heat medium HM2 and high temperature heat medium HM1, which is the first fluid described above, as the second fluid from ports 8-22 and 8-23. According to the set mixing ratio, heat medium HMn is made to flow out from port 8-21 as a mixed fluid. In this case, the heat medium HMn is
HMn = HM1 + HM2 (1)
It is.

  As an example, the mixing valve portion 6-2 is provided with a valve body 10-2 rotatably, and the opening degree θ21 on the port 8-22 side and the port 8- according to the rotation of the valve body 10-2. The opening degree θ22 on the 23 side is adjusted, whereby the mixing ratio is controlled.

  In this embodiment, the distribution valve unit 6-1 and the mixing valve unit 6-2 are connected by the connecting unit 12 between the port 8-13 and the port 8-23. The connecting portion 12 is provided with a branch portion 14, and the branch portion 14 is provided with a port 8-3. In this example, the high temperature heat medium HM1 which is the first fluid flows out from the port 8-3.

  The valve drive units 16-1 and 16-2 are used to control the distribution ratio and the mixing ratio. Each valve drive part 16-1 and 16-2 is installed in the valve main body 4. A valve control unit 18 that controls the distribution ratio of the distribution valve unit 6-1 and the mixing ratio of the mixing valve unit 6-2 is connected to each of the valve drive units 16-1 and 16-2 by a signal cable. For example, a computer may be used as the valve control unit 18.

  A) Distribution control

  As an example, a constant flow rate of high temperature heat medium HM1 is assumed. If the opening degree θ11 on the port 8-12 side and the opening degree θ12 on the port 8-13 side of the distribution valve unit 6-1 are set to, for example, θ11 = θ12, the heat on the port 8-12 side and the port 8-13 side The medium flow rate is halved. That is, the heat medium HM1 which is a half of the port 8-11 flows in the port 8-12, and the heat medium HM1 which is a half also flows in the port 8-13.

  The heat medium HM1 is branched at the branch portion 14 of the connection portion 12 and flows to the ports 8-3 and 8-23.

In this example, assuming that the flow rate of each port 8-11, 8-12, 8-13, 8-3, 8-23 is Q1, Q2, Q3, Q4, Q5,
Q1 = Q2 + Q3 (2)
Q3 = Q4 + Q5 (3)
It becomes.

  B) Mixing control

Assuming that the flow rate of the heat medium HM2 entering the port 8-22 is Q6 and the flow rate of the heat medium flowing out through the port 8-21 is Q7, the flow rate of the high temperature heat medium HM1 entering the port 8-23 is Q5, so the flow rate Q7 Is
Q7 = Q5 + Q6 (4)
It becomes.

Assuming that the temperature of the heat medium HM1 is T1 and the temperature of the heat medium HM2 is T2, the temperature Tn of the heat medium HMn mixed in the mixing valve 6-2 is the flow rate Q5, Q6 of the heat medium HM1 and HM2 to be mixed It can be obtained from each temperature T1, T2.
Tn = (T1 × Q5 + T2 × Q6) / (Q5 + Q6) (5)

In this case, if the temperatures T1 and T2 of the heat mediums HM1 and HM2 are, for example, T1 = 80 ° C. and T2 = 40 ° C., for example, 80 to 40 ° C. is obtained as the temperature Tn. , Tn ≒ 60 [° C.] can be obtained.

<Effect of First Embodiment>

  (1) In this valve unit 2, for example, a single valve body 4 is provided with at least a distribution valve unit 6-1 and a mixing valve unit 6-2, and the distribution valve unit 6-1 can distribute the heat medium HM1 and mix In the valve section 6-2, the heat medium HM2 can be mixed with the heat medium HM1 distributed by the distribution valve section 6-1, and the heat medium HMn mixed to a desired temperature can be obtained.

  (2) The heat medium HMn can be rapidly adjusted to a desired temperature by the distribution ratio of the heat medium HM1 by the distribution valve unit 6-1 and the mixing ratio of the heat medium HM1 and HM2 by the mixing valve unit 6-2. .

  (3) As is apparent from the configuration of FIG. 1, the distribution valve unit 6-1 and the mixing valve unit 6-2 can be of the same configuration, and the distribution valve unit 6-1 is used as a mixing unit, and And the mixing valve 6-2 can be used as a distributing unit.

  (4) It can be used for distribution and mixing of the heat medium used for hot water supply, bath water pursuit, heating, etc., and the processing of the distribution and mixing can be speeded up. Hot dashing can be achieved to accelerate the rise of the temperature of HMn.

  (5) In this valve unit 2, the distribution fluid of the distribution valve unit 6-1 and the mixed fluid of the mixing valve unit 6-2 can be isolated and processed.

  (6) According to the valve unit control method using the valve unit 2, as one example, the steps of flowing the first and second fluids into the valve unit 2, the adjustment step of the distribution ratio, and the adjustment step of the mixing ratio Distribution and mixing can be realized with a single valve unit 2. According to this control method, in the distribution ratio adjustment step, the distribution ratio set in the distribution valve unit 6-1 is adjusted, and the heat medium HM1 is received from the circulation path as the first fluid, and the distribution valve unit 6-1 It can be distributed to at least two systems according to the distribution ratio set in. Further, in the adjustment process of the mixing ratio, the mixing ratio of the mixing valve 6-2 is adjusted, and at least one heat medium HM1 of the distributing valve 6-1 is used as the mixing ratio of the mixing valve 6-2 set. It can be mixed accordingly. Therefore, fluid distribution and mixing can be performed efficiently and quickly by the single valve unit 2.

Second Embodiment

  FIG. 2 shows an example of the heat source device 22 using the valve unit 2. In FIG. 2, the same parts as in FIG. 1 are given the same reference numerals. The heat source device 22 is provided with a burner 40 as an example of the heat source described above, and the burner 40 is installed in the combustion chamber 42. The burner 40 is supplied with a fuel gas G as an example of a fuel. An air supply fan 44 is installed in the combustion chamber 42 as an example of the air supply unit, and combustion air is supplied from the air supply fan 44 to the combustion chamber 42. The combustion exhaust EG generated in the burner 40 by the combustion of the fuel gas G flows to the exhaust hole 46 located on the downstream side of the burner 40 as the upstream side.

  The combustion chamber 42 is provided with a first heat exchanger 26-1, and the heat exchanger 26-1 is provided with a first heat medium heat exchange section 26-111 and a second heat medium heat exchange section 26-112. , A bathtub water heat exchange unit 26-12 and a hot water supply heat exchange unit 26-13. The heat medium heat exchange unit 26-111 and the bath water heat exchange unit 26-12 for recovering the heat of the combustion exhaust EG on the upstream side are primary heat exchangers, and the heat medium heat exchange unit 26-112 and the hot water heat exchange unit 26-13 is a secondary heat exchanger which recovers the heat of the combustion exhaust of the lower stream side after heat exchange with a primary heat exchanger.

  In the first circulation passage 28-1 for circulating the heat medium HM, the heat medium heat exchange units 26-111, 26-112, the circulation pump 48-1, the tank 50, the heat exchanger 26-2, the distribution valve unit 6 1, a mixing valve unit 6-2, a high temperature heating load 54-1, and a low temperature heating load 54-2 are connected.

  The tank 50 is driven by the circulation pump 48-1, and through the circulation passage 28-1, the low temperature heat from the heat exchanger 26-2, the high temperature heating load 54-1 or the low temperature heating load 54-2 or a combination thereof Medium HM returns. The heat medium HM from the tank 50 is preheated by the heat medium heat exchange unit 26-112, and is then branched by the branch unit 56-1 and circulated to the heat medium heat exchange unit 26-111 to become high temperature, and then distributed. It is led to the valve section 6-1. In the distribution valve unit 6-1, the high-temperature heat medium HM is distributed to the heat exchanger 26-2 side and the branch portion 14 side.

  The heat medium HM circulating to the heat exchanger 26-2 is subjected to heat exchange with the water supply W side. The heat medium HM which has been cooled by passing through the heat exchanger 26-2 returns to the tank 50 through the return path 25 which is a part of the circulation path 28-1. In other words, the heat exchanger 26-1 is returned to the heat exchanger 26-1 by the feedback path 30 formed separately from the heating circuits 28-11 and 28-12 of the high temperature heating load 54-1 and the low temperature heating load 54-2.

  In the branch part 14, the high temperature heat medium HM is distributed to the mixing valve part 6-2 and the heating circuit 28-11 side. The heat medium HM distributed to the heating circuit 28-11 is dissipated by the high temperature heating load 54-1 and is used for heating. As a result, the temperature-reduced heat medium HM is returned to the tank 50 and stored.

  The heat medium HM distributed to the mixing valve 6-2 is mixed with the heat medium HM preheated by the low temperature heat medium heat exchanger 26-112, and the heat medium HM at this mixing temperature is heated. It circulates to the circuit 28-12. In the heating circuit 28-12, the circulating heat medium HM is dissipated by the low-temperature heating load 54-2 and used for heating. As a result, the temperature-reduced heat medium HM is returned to the tank 50 and stored.

  The bathtub water heat exchange unit 26-12, the circulation pump 48-2, and the bathtub 32 are connected to the circulation passage 28-2. By driving the circulation pump 48-2, the bath water BW is circulated from the return pipe 28-21 to the bath water heat exchange section 26-12, and the bath water heat exchange section 26-12 is transferred to the bath 32 by the pipe 28-22. Will be returned.

  And in this embodiment, the heat exchange part 26-13 for hot water supply is connected to the water supply path 34-1. Therefore, after the water supply W is preheated by the hot water supply heat exchange unit 26-13, heat exchange with the heat medium HM is performed by the heat exchanger 26-2. Thus, the water supply W is supplied as hot water HW.

<Hot water supply operation>

  FIG. 3 shows the hot water supply operation of the heat source device 22. In this hot water supply operation, the heat medium HM is circulated using the return path 25 of the circulation path 28-1, and heat exchange between the heat medium HM and the water supply W is performed.

<Follow-up action>

  FIG. 4 shows the follow-up operation of the heat source device 22. In this follow-up operation, the circulation pump 48-2 is driven to circulate the bath water BW into the circulation passage 28-2. In heat exchange between the bath water BW and the combustion exhaust EG, the circulation pump 48-1 is driven to avoid the boiling of the heat medium HM due to heat exchange between the heat medium HM and the combustion exhaust EG. The heat medium HM is circulated using the passage 25.

<Heating operation>

  FIG. 5 shows the heating operation of the heat source device 22. In this heating operation, the heat medium HM is circulated to the circulation passage 28-1, and the high temperature heat medium HM distributed by the distribution valve unit 6-1 of the valve unit 2 is supplied to the heating circuit 28-11, and the high temperature heating load 54 Cycle to -1. Further, the high temperature heat medium HM distributed by the distribution valve unit 6-1 and the low temperature heat medium HM are mixed by the mixing valve unit 6-2 and flowed to the heating circuit 28-12 to the low temperature heating load 54-2. Circulate.

<Effect of Second Embodiment>

  (1) The heat medium heat exchange units 26-111 and 26-112, the bath water heat exchange unit 26-12, and the hot water heat exchange unit 26-13 are integrated into the heat exchanger 26-1 so that a single heat exchange is performed. The heat source device 22 can be miniaturized as well as the heat exchanger can be made compact.

  (2) In the heat exchanger 26-1, the combustion exhaust EG of the single burner 40 is caused to act on a plurality of heat exchange parts, and efficient use of the combustion heat can be achieved.

  (3) The liquid-liquid heat exchanger conventionally used for heating bath water BW can be omitted, and cost reduction and downsizing can be achieved.

  (4) The return path 25 is provided in the circulation path 28-1 of the heat medium HM, and the heat medium HM is circulated through the return path 25. Therefore, the heat medium from the heating circuits 28-11 and 28-12 to the heating load Circulation can be avoided, and heat radiation of the heat medium HM can be avoided.

  (5) Since one valve unit 2 provided with the distribution valve unit 6-1 and the mixing valve unit 6-2 adjacent to each other is used, the number of components can be reduced and the heat medium HM circulation path 28-1 can be simplified or simplified. Can be

  (6) The heat exchanger 26-2 can perform heat exchange between the heat medium HM and the water supply W, for example, heat exchange between the heat medium HM at 80 ° C. and the water supply W. Properties can be stabilized.

(7) At the additional treatment of the bath water BW, the heat of combustion can be received directly from the combustion exhaust EG in the bath water heat exchange section 26-12 included in the heat exchanger 26-1, and the heat rising characteristics of the bath water BW It can be enhanced. That is, the bath water BW can be heated quickly.

Example 1

  FIG. 6 shows the hot water supply, additional heating, and heating device 60 according to the first embodiment. The hot water supply, additional heat, and heating device 60 is an example of a heat source device using the valve unit 2. In the hot water supply, additional heat, and heating device 60, the same parts as those in FIG.

  The hot water supply / relay / heating device 60 includes a device case 62, and the device case 62 is attached to a wall member of a house or the like. The device casing 62 is provided with the circulation paths 28-1 and 28-2 described above. Then, a return path 25 which is a part of the circulation path 28-1 is installed in the apparatus casing 62. That is, the heat medium HM uses the return path 25 separately from the circulation path for the heat medium HM such as the high temperature heating load 54-1, the low temperature heating load 54-2, and the heating circuits 28-11 and 28-12. 26-2 returns to the tank 50. In the circulation path 28-1, the temperature sensor 70-4 is on the outlet side of the heat exchanger 26-111, and the outlet side of the heat exchanger 26-112, that is, the temperature sensor 70-5 on the inlet side of the heat exchanger 26-111. Is installed. The temperature sensor 70-4 detects the temperature of the high-temperature heat medium HM after heat exchange, and the temperature sensor 70-5 detects the temperature on the outlet side of the heat exchanger 26-112, that is, the inlet side of the heat exchanger 26-111. The temperature of the heat medium HM is detected.

  The heat medium heat exchange unit 26-111 and the bath water heat exchange unit 26-12 are integrally formed heat exchange pipelines, and a plurality of heat absorption fins 64 are attached in common.

  The fuel gas G is supplied to the burner 40 from the fuel supply pipe 63. A fuel control valve 52-4 is installed on the burner 40 side, and the supply and supply amount of the fuel gas G to the burner 40 are controlled.

  The heat medium heat exchange unit 26-112 and the hot water supply heat exchange unit 26-13 are secondary heat exchangers that recover the combustion exhaust EG on the downstream side, and generate a large amount of drain D. The drain D is received by the drain receiver 66, stored in the drain tank 68, and discharged according to the storage amount.

  A bypass passage 34-3 is provided in the water supply passage 34-1 and the hot water supply passage 34-2, and a mixing valve 52-3 is provided on the hot water supply passage 34-2 side. A temperature sensor 70-1, a water supply amount sensor 72-1, and a temperature sensor 70-2 and 70-3 are provided on the hot water supply path 34-2 on the water supply path 34-1 side. The temperature sensor 70-1 detects the temperature of the water supply W, and the temperature sensor 70-2 detects the temperature of the hot water HW immediately after the heat exchange of the heat exchanger 26-2. Further, the temperature sensor 70-3 detects the temperature of the hot water HW that has passed through the mixing valve 52-3. Therefore, when the hot water supply is started, after the water supply amount, the water supply temperature, the hot water temperature immediately after heat exchange, and the hot water supply are started, the hot water temperature is referenced and the mixing valve 52-3 is controlled to supply the hot water HW immediately after the heat exchange. The mixing ratio of W is adjusted. Thereby, the warm water HW controlled to the set temperature can be discharged.

  An electric component board 74 is provided, and a commercial AC power is received by the power supply unit 76 on the electric component board 74, and a power output is supplied. The electric component board 74 is provided with a hot water supply, additional heating and heating control unit 78 (FIG. 7), and remote control devices 80-1, 80-2, and 80-3 are connected.

<Control system>

  FIG. 7 shows an example of the hot water supply, additional heating and heating control unit 78. In the configuration shown in FIG. 7, functional units necessary to explain the functions of the embodiment are described, and the present invention is not limited to such functional units.

  The hot water supply / relay / heating control unit 78 is an example of the valve control unit 18. The hot water supply, additional heat, and heating control unit 78 and the remote control devices 80-1, 80-2, and 80-3 are configured by computers, and realize the control mode described later by information processing. The processor 82 executes a program in the memory unit 84 to execute information processing necessary for control of hot water supply, additional heating, and heating, storage of data, and the like.

  The memory unit 84 includes a recording medium such as a ROM (Read-Only Memory) or a RAM (Random-Access Memory), and stores a program for executing information processing necessary for control. Besides ROM, EEPROM may be provided. The RAM constitutes a work area for information processing.

  The system communication unit 86 is controlled by the processor 82 and cooperates with the remote control devices 80-1, 80-2, 80-3 by wire or wireless to execute exchange of information with these.

  The input / output unit (I / O) 88 takes out input information to be supplied to the information processing of the processor 82 and a control output which is a processing result. The I / O 88 is connected to circulation pumps 48-1 and 48-2, temperature sensors 70-1, 70-2 and 70-3, a fuel control valve 52-4, and the like.

<Control mode of hot water supply, additional heating, heating device 60>

  The hot water supply / relay / heating device 60 includes a hot water supply operation, a refueling operation, a heating operation, etc., and these operations include pump rotation control (FIG. 8), burner combustion control (FIG. 9) and hot water control (FIG. 10), bathtub pouring control, etc. are included.

<Pump speed control>

  FIG. 8 shows a processing procedure of pump rotational speed control. This treatment procedure is an example of the heat exchange method of the present invention. In this pump rotational speed control, it is determined whether it is a follow-up single operation (S101). In the case of the additional single operation (YES in S101), the circulation pump 48-1 is driven at a rotation speed required to prevent boiling of the heat medium HM during additional processing (S102).

  If it is not the single-shot operation (NO in S101), it is determined whether the single-hot-water supply operation or the simultaneous operation of the hot-water supply and the secondary operation (S103).

  In the case of a single operation of hot water supply or simultaneous operation of hot water supply and additional heat, the heat medium HM is set to the predetermined temperature T1 according to the amount of hot water supply, for example, an amount of heat medium HM supplied to the heat exchanger 26-2 at T1 = 80. The circulation pump 48-1 is driven at the number of revolutions necessary for the operation (S104).

  If it is other than one or both of the hot water supply operation and the additional operation, the circulation pump 48-1 is driven to the rotational speed according to the combination of these functions (S105). That is, in the single operation of the high temperature heating load 54-1, in the single operation of the low temperature heating load 54-2, the rotation number N2 according to the number of connected terminals, the high temperature heating load 54-1 and the low temperature heating load 54-2. In the case of both operations, it may be driven at the number of rotations N corresponding to the function to be used, such as the number of rotations N3. The number of revolutions is changed depending on the amount of hot water supply, the degree of heating, and the combination thereof, and the number of revolutions corresponds to the load.

  By the above process, the number of rotations of the circulation pump 48-1 for circulating the heat medium HM is determined, and the circulation pump 48-2 for circulating the bath water BW is set to a predetermined number of rotations when performing reworking operation (YES in S106) Drive (S107), and when the follow-up operation is not performed (NO in S106), the operation is stopped (S108). The rotational speed of the circulation pump 48-2 may be controlled by the amount of combustion of the burner 40.

  In this pump rotational speed control, the flow rate of the heat medium HM changes in accordance with the rotational speed of the circulation pump 48-1. Feedforward control (FF control) is used for control of circulation pump 48-1, and it controls to the number of rotations according to the combination of hot water supply (large hot water supply, small hot water supply), high temperature heating, low temperature heating (number of connected terminals) Do.

  In the additional single operation, the heat medium HM is circulated at a predetermined rotation speed to prevent the heat medium HM from boiling. At this time, the heat medium HM is allowed to pass through the heat exchanger 26-2, and is internally circulated in the apparatus casing 62 by the return path 25. If it is not a single stroke, the rotational speed of the circulation pump 48-1 may be a rotational speed adapted to other functions.

  Necessary for heating by the detection temperature of temperature sensor 70-1, the detection value of hot water supply amount sensor 72-1, and the setting temperature of hot water supply or pouring in sole heating operation (including pouring) or reheating operation simultaneously with hot water supply The amount of heat (number of orders) may be calculated. The number of revolutions of the circulation pump 48-1 corresponding to the flow rate of the heat medium HM of 80 ° C. as a constant temperature at which this issue number can be obtained is determined, and the circulation pump 48-1 is controlled to the number of revolutions. As a result, it is possible to prevent the temporary stop of the combustion and the like without heating the heat medium HM more than necessary.

<Burner combustion control>

  FIG. 9 shows a processing procedure of burner combustion control. This processing procedure is an example of the valve unit control method of the present invention. In the burner combustion number control, it is determined whether the circulation pump 48-1 is driven (S201). Assuming that the circulation pump 48-1 is driven (YES in S201), the combustion control of the burner 40 is performed so that the detection temperature of the heat medium HM of the temperature sensor 70 becomes a constant temperature T1, for example, T1 = 80.degree. S202).

  If the circulation pump 48-1 is not driven (NO in S201), the burner 40 is not burned (S203). That is, the heat medium HM or the bath water BW is not heated.

  In this burner combustion control, while the circulation pump 48-1 is driven, the amount of combustion of the burner 40 is controlled so that the heat medium HM reaches a predetermined temperature, for example, 80 ° C. In this case, although a flow rate sensor may be installed, since no flow rate sensor is installed, driving of the circulation pump 48-1 is set as a control condition without detecting the flow rate of the heat medium HM. In this case, regardless of the flow rate of the heat medium HM flowing through the first heat exchange unit 26-111, the fuel gas amount is adjusted so that the detection temperature of the temperature sensor 70-4 becomes a predetermined temperature, for example, 80.degree. Do. When the temperature detected by the temperature sensor 70-5 is close to the predetermined temperature, the combustion may be stopped.

<Hot water control>

  FIG. 10 shows the processing procedure of the hot water supply control. This processing procedure is an example of the valve unit control method of the present invention. Heat exchange between the water supply W from the water supply passage 34-1 and the heat medium HM is performed in the second heat exchanger 26-2. The hot water in the hot water supply passage 34-2 or the pouring of the bath 32 relates to the control of the mixing valve 52-3. In this hot water supply control, it is determined whether it is a hot water supply operation (S301). If there is hot water supply (YES in S301), it is determined whether it is the sole operation of the bathtub pouring (S302).

  If it is the sole operation of bathtub pouring (YES in S302), the temperature detected by temperature sensor 70-3 will be a temperature taking into account the heating by tub water heat exchange unit 26-12 with respect to the set temperature T2 by the bather Then, the mixing valve 52-3 is controlled (S303).

  If it is not the sole operation of the bathtub pouring (NO in S302), it is determined whether the hot water supply is the sole operation (S304). If it is the hot water supply only operation (YES in S304), the mixing valve 52-3 is controlled so that the detected temperature of the hot water HW detected by the temperature sensor 70-3 becomes the set temperature T3, and the high temperature hot water HW and the low temperature The mixing ratio of the water supply W is adjusted, and the hot water HW having the set temperature T3 is discharged (S305).

  If it is not the hot water supply only operation (NO in S304), control corresponding to the bathtub pouring and hot water supply is performed (S306). In this S306, control such as pouring priority and hot water supply priority is performed. In the pouring priority, the pouring operation is performed prior to the hot water supply operation, and the temperature control is equivalent to that of the single pouring operation. In this case, the hot water supply temperature tends to be lower than the hot water supply set temperature T3. In the hot water supply priority, the hot water supply operation is prioritized over the pouring operation. When the hot water supply operation occurs during the pouring operation and the hot water supply operation is performed, the pouring operation is temporarily stopped.

  In the hot water supply control, the presence or absence of hot water supply is detected by the water supply amount sensor 72-1. It is judged whether the bathtub pouring is independent or not by comparing the detection values of the pouring amount sensor 72-2 and the water supply amount sensor 72-1, and when there is a difference between them, simultaneous use of hot water supply and pouring is Become. In the case of pouring water alone, the warm water HW having passed through the temperature sensor 70-3 flows into the circulation path 28-2, and is poured into the bath 32 from the forward pipe 28-22 and the return pipe 28-21. Since the bath water heat exchange section 26-12 is heated when passing through the forward pipe 28-22, the mixing valve is operated so that the temperature sensor 70-3 becomes a temperature lower than the bath set temperature in consideration of this temperature increase. Control the mixing ratio of 52-3.

  In the case of only the hot water supply, the mixing valve 52-3 is controlled such that the temperature sensor 70-3 reaches the set temperature T3.

  And when pouring and hot water supply occur simultaneously, control corresponding to simultaneous use is performed, so that the detection temperature of temperature sensor 70-3 becomes the temperature which considered pouring and hot water simultaneous occurrence at least. The mixing ratio of the mixing valve 52-3 is controlled.

<Hot water supply operation>

  FIG. 11 shows the flow of the heat medium HM and the water supply W during the hot water supply operation. In this hot water supply operation, the heated heat medium HM circulates to the heat exchanger 26-2 through the circulation passage 28-1. Thereby, heat exchange between the water supply W from the water supply passage 34-1 and the heat medium HM is performed, and the hot water HW is discharged from the hot water supply passage 34-2.

<Follow-up action>

  FIG. 12 shows the flows of the bathtub water BW and the heat medium HM when the bathtub water BW is retraced. In this additional operation, the bath water BW is circulated to the bath water heat exchange unit 26-12 of the heat exchanger 26-1, and heat exchange between the bath water BW and the combustion exhaust EG is performed. In this case, since the combustion exhaust EG of the burner 40 flows to the heat medium heat exchange unit 26-111, heat exchange between the heat medium HM and the combustion exhaust EG is inevitably performed, and boiling is not performed if the heat medium HM is not circulated. It may occur. Therefore, the circulation pump 48-1 is driven to circulate the heat medium HM in the circulation path 28-1.

<Heating operation>

  FIG. 13 shows the flow of the heat medium HM during the heating operation. In this heating operation, the circulation pump 48-1 is driven to circulate the heat medium HM through the circulation passage 28-1 and the heating circuits 28-11 and 28-12.

<Effect of Example 1>

  (1) According to the hot water supply / relaying / heating device 60, the same effect as the heat source device 22 according to the second embodiment can be obtained.

  (2) According to the hot water supply / relaying / heating device 60, it is possible to realize a hot water supply / reheating / heating device with high thermal efficiency as well as downsizing.

  (3) High temperature hot water HW and low temperature heating can be realized.

Example 2

  A of FIG. 14 shows the front of the valve unit 2-1 according to the first embodiment. The same reference numerals as in FIG. 1 denote the same parts in FIG. In the valve body 4 of this valve unit 2-1, the distribution valve portion 6-1 is disposed on the right side with the connection portion 12 at the center, and the mixing valve portion 6-2 is disposed on the left side. 11, 8-12, the mixing valve 6-2 is provided with the ports 8-21, 8-22, and the connecting portion 12 is provided with the port 8-3. A valve drive unit 16-1 for driving the valve body 10-1 is provided above the distribution valve unit 6-1, and a valve drive unit 16-2 for driving the valve body 10-2 is provided above the mixing valve unit 6-2. It is attached. In the first embodiment, it is symmetrical about the central axis of the port 8-3 of the connecting portion 12.

  B of FIG. 14 shows a plane of the valve unit 2-1. The connector parts 90-1 and 90-2 are disposed at opposite parts of the valve drive parts 16-1 and 16-2, respectively, and the connectors 90-1 and 90-2 are provided with plugs for receiving a drive signal (not shown). Connected

  A of FIG. 15 shows the right side of the valve unit 2-1. The left side of the valve unit 2-1 has the same shape as the right side. B of FIG. 15 shows the bottom of the valve unit 2-1. The ports 8-11, 8-21 and 8-3 have the same shape and are arranged horizontally at equal intervals. The ports 8-12 and 8-22 are arranged in the orthogonal direction as an example for the ports 8-11, 8-21 and 8-3.

  FIG. 16 shows a cross section taken along line XVI-XVI of FIG. The valve drive unit 16-1 includes a motor for driving the valve body 10-1 and a motor drive circuit. The valve body 10-1 is rotated by motor rotation, and the opening degrees θ11 and θ12 on the ports 8-12 and 8-13 are adjusted. Thus, the distribution ratio is set to each of the ports 8-12 and 8-13.

  The valve drive unit 16-2 includes a motor for driving the valve body 10-2 and a motor drive circuit. The valve body 10-2 is rotated by motor rotation, and the opening degrees θ21 and θ22 on the ports 8-22 and 8-23 are adjusted. Thereby, the mixing ratio is set to each port 8-22 and 8-23.

Example 3

  FIG. 17 illustrates a part of the distribution valve unit 6-1 of the valve unit 2-1 according to the third embodiment by cutting and disassembling it. The distribution valve portion 6-1 is provided with a cylinder portion 92, ports 8-11, 8-12 and 8-13 are in communication with the cylinder portion 92, and the valve body 10-1 is rotatably provided. ing. The valve body 10-1 is formed of a cylinder, and includes a blocking portion 94 that blocks the passage of fluid and a passage portion 96 that allows the passage of fluid. The opening degree θ11 on the port 8-12 side and the opening degree θ12 on the port 8-13 side in the port 8-11 according to the pivot position of the closing portion 94 or the passing portion 96 of the valve body 10-1 with respect to the port 8-11. Controls the distribution ratio.

  A rotating shaft 100 is installed on a ceiling 98 of the valve body 10-1, and a motor is attached to the rotating shaft 100 via a bearing 102 as a rotational drive source provided in the valve drive unit 16-1. The motor is fixed to the support plate 104 and covered by a motor cover 106.

  According to such a configuration, the distribution ratio is controlled by the opening θ11 on the port 8-12 side of the port 8-11 and the opening θ12 on the port 8-13 side according to the rotation of the motor. Thus, the heat medium HM1 described above is distributed to the port 8-12 and the port 8-13 according to the distribution ratio.

  Such a structure is the same as in the mixing valve portion 6-2, and the difference is that the distribution ratio is the mixing ratio, and the heat medium HM2 and the heat medium HM1 distributed are mixed to obtain the mixed heat medium HMn. It is only

  Although the branching unit 14 is not provided in the third embodiment, the branching unit 14 may be provided to include the port 8-3.

Example 4

  FIG. 18 shows a valve unit 2-2 according to a fourth embodiment. With respect to the valve unit 2-1 according to the second embodiment, in the valve unit 2-2, the distribution valve unit 6-1 is configured to be turned upside down, and the mixing valve unit 6-2 is the same as the second embodiment. .

  As described above, the same distribution function can be obtained even when the distribution valve unit 6-1 has a vertically inverted structure different from that of the second embodiment, and the remaining of the heat medium HM in the distribution valve unit 6-1 due to the mounting direction can be prevented.

Example 5

  A and B of FIG. 19 show the valve unit 2-3 according to the fifth embodiment. In the valve unit 2-3, the heat medium HM, which is the first fluid, is introduced from the port 8-3 of the connection portion 12 and is supplied to the distribution valve portion 6-1 and the mixing valve portion 6-2. While providing the port 8-31 on the upper side and the port 8-32 on the lower side of the distribution valve unit 6-1, the valve drive unit 16-1 is provided on the side to drive the valve body 10-1 The distribution ratio can be adjusted by adjusting the opening degree θ1 on the 8-31 side and the opening degree θ2 of the port 8-32.

  In such a configuration, the heat medium HM introduced to the port 8-3 is distributed to the distribution valve unit 6-1 and the mixing valve unit 6-2, and the heat medium HM in the distribution valve unit 6-1 corresponds to the distribution ratio. Port 8-31 and 8-32.

  According to such a configuration, the heat medium HM is introduced into the connection part 12 from the port 8-3, so that the heat medium HM can be introduced from the middle of the distribution valve unit 6-1 and the mixing valve unit 6-2, Resistance can be reduced.

  According to the valve unit control method using the valve unit 2 according to the fifth embodiment, as an example, the process of flowing the first fluid and the second fluid in the circulation path, the process of dividing the fluid, and the process of adjusting the distribution ratio The process including the adjustment step of the mixing ratio can be realized by a single valve unit 2. According to this control method, in the diversion step, the heat medium HM1 is diverted as at least two systems as the first fluid from the circulation path to the diversion portion. In the distribution ratio adjustment step, the distribution ratio of the distribution valve unit can be adjusted according to the set distribution ratio, and the heat medium HM1 can be distributed to at least two systems from the diversion channels. Then, in the adjustment process of the mixing ratio, the mixing ratio set in the distribution valve unit 6-1 is adjusted, and the mixing ratio in which the heat medium HM2 and the heat medium HM1 of at least one system of the distribution valve unit 6-1 are set It can be mixed according to These processes can be realized by a single valve unit 2 and efficient diverting, distribution and mixing can be performed.

Other Embodiments

  a) Each distribution valve part 6-1 and mixing valve part 6-2 of valve unit 2, 2-1, 2-2, 2-3 of the above-mentioned embodiment are the same structures, and distribution valve part 6-1 is It may be used as a mixing valve part, and the mixing valve part 6-2 may be used as a distributing valve part, and both may be used as a distributing valve part or a mixing valve part.

  b) In the above embodiment, the bathtub water heat exchange unit 26-12 is configured of a primary heat exchanger, but may be configured to include a secondary heat exchanger for heating the bathtub water BW.

  c) The heat of the heat medium HM of the above embodiment may be used for bathroom heating or a bathroom dryer.

As described above, the most preferable embodiment and the like of the heat source device have been described. The present invention is not limited to the above description. Various modifications and changes can be made by those skilled in the art based on the subject matter of the invention described in the claims or disclosed in the mode for carrying out the invention. It goes without saying that such variations and modifications are included in the scope of the present invention.

In Barubuyuni' The reserve and the valve unit control method of the invention, the efficiency of the distribution and mixing of the heating medium, it is possible to achieve compactness of the valve arrangement, Ya heat exchange with efficient heat sources and devices heat medium and the water supply Heating by a heat medium can be realized.

2, 2-1, 2-2, 2-3 valve unit 4 valve body 6-1 distribution valve unit 6-2 mixing valve unit 8-11, 8-12, 8-13, 8-21, 8-22, 8-23, 8-3
10-1, 10-2 valve body 12 connection part 14 branch part 16-1, 16-2 valve drive part 18 valve control part 22 heat source device 24 heat source 24-12 bathtub water heat exchange part 25 return path 26-1 first Heat exchanger 26-2 second heat exchanger 26-111 first heat medium heat exchange unit 26-112 second heat medium heat exchange unit 26-12 bath water heat exchange unit 26-13 heat exchange for hot water supply Part 28-1 First circulation path 28-11, 28-12 Heating circuit 28-2 Second circulation path 28-21 Return pipe 28-22 Forward pipe 32 Bathtub 34-1 Water supply path 34-2 Hot water supply path 34-1 Reference Signs List 3 bypass path 40 burner 42 combustion chamber 44 air supply fan 46 exhaust hole 48-1, 48-2 circulation pump 50 tank 52-3 mixing valve 52-4 fuel control valve 54-1 high temperature heating load 54-2 low temperature heating load 56 -1 branch 56-2 branch part 60 hot water supply, additional heating, heating device 62 apparatus housing 63 fuel supply pipe 64 heat absorption fin 66 drain receptacle 68 drain tank 70-1, 70-2, 70-3 temperature sensor 72-1 water supply amount sensor 72 -2 pouring amount sensor 74 electrical circuit board 76 power supply unit 78 water heating / relaying / heating control unit 80-1, 80-2, 80-3 remote control device 82 processor 84 memory unit 86 system communication unit 90 connector unit 92 cylinder unit 94 closed Part 96 Passage part 98 Ceiling part 100 Rotating shaft 102 Bearing part 104 Support plate 106 Motor cover

Claims (4)

At least a single valve body,
A distribution valve unit provided in the valve body for distributing the first fluid into at least two systems according to a set distribution ratio;
A mixing valve part provided in the valve body for mixing the second fluid and at least one system of the distribution valve part according to the set mixing ratio;
A branch portion between the distribution valve portion and the mixing valve portion for branching part of the first fluid supplied from the distribution valve portion to the mixing valve portion in the valve body;
A valve unit comprising:   The valve main body includes a connecting portion that connects the distribution valve portion and the mixing valve portion, and supplies the first fluid from the distribution valve portion to the mixing valve portion. The valve unit described in.   The first fluid is a high temperature heat medium, the second fluid is a low temperature heat medium, and a part of the high temperature heat medium distributed by the distribution valve unit is mixed with the low temperature heat medium by the mixing valve unit. The valve unit according to claim 1 or 2, wherein the mixed heating medium is produced. Flowing a first fluid and a second fluid in a circulation path provided with a valve unit ;
Adjusting a distribution ratio of a distribution valve unit provided in the valve unit, which distributes the first fluid from the circulation path to at least two systems according to a set distribution ratio;
The mixing ratio of the mixing valve unit provided in the valve unit is adjusted, which mixes the second fluid and the first fluid of at least one system of the distribution valve unit according to the set mixing ratio. Process,
Wherein at the branch portion provided between the distribution valve unit in the valve unit and the mixing valve unit, the step of branching a portion of the first fluid supplied to the mixing valve unit from said dispensing valve unit When,
A valve unit control method characterized by including.

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