JP6427076B2 - Liquid storage apparatus and heat source apparatus equipped with the liquid storage apparatus - Google Patents

Description

  The present invention relates to a liquid storage device provided with a liquid storage tank for storing liquid, and a heat source device provided with the liquid storage device.

  In FIG. 5, an example of the heat source device is shown by a schematic side view. The heat source apparatus 3 has a hot water storage tank (hot water storage tank) 1 as a liquid storage tank for storing liquid, an auxiliary heat source apparatus 7, a heating element 2, and a passage connecting them, as shown in FIG. The part indicating the passage is indicated by an arrow in the flow direction of the liquid (here, water, which may be referred to as hot water or hot water) flowing through the passage.

  As shown in the figure, a heating element 2 disposed outside the hot water storage tank 1 is connected to the hot water storage tank 1 via a water supply passage 12 and a heat recovery passage 13. It functions as a heating means for heating water as liquid stored in the hot water storage tank 1. As the heat generating body 2, for example, a solar heat water unit, a heat pump unit, or the like provided with a power generation device or a heat collector for collecting solar heat is applied.

  A water supply passage 11 for supplying water from a water supply supply source (not shown) to the hot water storage tank 1 and the water supply passage 12 are connected to the lower side of the hot water storage tank 1. It is a passage for supplying water to the heating element 2 from the lower side of the hot water storage tank 1. The hot water passage 14 and the heat recovery passage 13 are connected to the upper side of the hot water storage tank 1, and the heat recovery passage 13 sends the hot water heated by the heating element 2 to the hot water storage tank 1 side. It is a passage introduced to the hot water storage tank 1 from the upper side of the hot water storage tank 1.

  When the heating element 2 is formed by a power generation device, water of, for example, 50 ° C. or less (preferably 45 ° C. or less) for cooling is supplied from the hot water storage tank 1 to the heating element 2 (power generation device) Water is heated by the exhaust heat of the apparatus, introduced into the hot water storage tank 1 from the heat recovery passage 13 and stored in the hot water storage tank 1. The power generation apparatus is formed of, for example, a fuel cell (FC) such as a polymer electrolyte fuel cell (PEFC) or a solid oxide fuel cell (SOFC), a gas engine or the like, and the fuel cell is This is a power generation device that generates electric power by reacting hydrogen extracted from fuel such as city gas with oxygen in air in reverse reaction of water electrolysis.

  The hot water passage 14 is a passage for supplying hot water from the upper side of the hot water storage tank 1 to the hot water supply destination, and draws out water as a liquid stored in the hot water storage tank 1 from the upper end side of the hot water storage tank 1 Function as a liquid discharge passage leading to the liquid supply destination side. A branch passage 17 branched from the water supply passage 11 and a hot water communication passage 16 are connected to the hot water passage 14 via the mixing valve 15. An auxiliary heat source device 7 such as a water heater equipped with a burner or the like (not shown) is connected to the hot water passage 16 and the auxiliary heat source device 7 and the hot water storage tank 1 are accommodated in the same case 8 The hot water storage unit is formed. Reference numeral 10 in FIG. 5 denotes a front cover of the auxiliary heat source device 7.

  The hot water storage tank 1 is made of, for example, stainless steel, and the hot water storage tank 1 has thermistors 6 as temperature detection means for detecting the temperature of hot water in the hot water storage tank 1. A plurality (four in this case) is provided in the direction via an interval. For example, the intervals between the thermistors 6 are equal, and the thermistors 6 are attached to the outer side wall of the hot water storage tank 1.

  The hot water storage tank 1 is formed with a layer of temperature in the vertical direction, and the upper layer (high temperature layer) of the hot water storage tank 1 (see the upper part of the line B in the figure) Hot water of heated high-temperature Ta (for example, 80 ° C.) is stored (see shaded area in the figure). In the lower layer (low temperature layer) of the hot water storage tank 1, water of the same temperature Tc (for example, 15 ° C.) as the temperature of the water supplied to the hot water storage tank 1 is stored. In the meantime, a layer (temperature intermediate layer) having a steep temperature gradient from temperature Ta to temperature Tc is formed. The broken line B in FIG. 5 indicates the boundary between the high temperature layer and the temperature intermediate layer, and is a temperature layer in which the water (hot water) above the broken line B is substantially used for hot water supply.

  The temperature according to the water level (liquid level) in the hot water storage tank 1 is detected by the thermistor 6, whereby, for example, the high temperature layer and the middle temperature layer are shown as shown by the line B in the figure. The boundaries can be understood clearly. Then, the heat storage amount in the hot water storage tank 1 can be known by grasping the amount of water (hot water) of the temperature layer which is stored above the broken line B and substantially used for hot water supply. The water quality of the hot water in the hot water storage tank 1 may be confirmed based on the temperature detected by the thermistor 6, or the temperature detected by the thermistor 6 may be used for outlet temperature control. There is.

  In the heat source device 3, when the temperature of hot water drawn from the hot water storage tank 1 through the hot water passage 14 is lower than the hot water supply setting temperature (that is, the detected temperature of the thermistor 6 provided at the top is higher than the hot water supply setting temperature When the temperature is low, the hot water is heated (additional heating) by the auxiliary heat source device 7 so that the hot water of the hot water setting temperature can be supplied from the hot water supply passage 18 to the hot water destination.

  On the other hand, when the hot water temperature in the hot water storage tank 1 is equal to or higher than the hot water supply setting temperature, the heating of the hot water by the auxiliary heat source device 7 is not performed. The water taken out through 17 is mixed as required by the control of the mixing valve 15, and supplied to the hot water supply destination without heating through the hot water passage 16 and the hot water supply circuit in the auxiliary heat source device 7.

Patent No. 4369278 gazette

  By the way, there is a demand for miniaturizing the installation space of the heat source device 3. For example, when the heat source device 3 is disposed on the back side of a house, the planar shape of the case 8 of the heat source device 3 is rectangular There are many requests that it wants to form as

  Further, in the heat source apparatus 3 provided with the hot water storage tank 1 as shown in FIG. 5, the auxiliary heat source apparatus 7 such as a water heater etc. performs maintenance periodically, for example, and repairs required when problems occur. While it is necessary to provide the case 8 with a door or the like to allow the operator to perform maintenance etc. in order to carry out the operation, the hot water storage tank 1 is a simple container, which requires repair etc. Things are rare.

  Therefore, for example, as shown in the plan view of FIG. 6, the auxiliary heat source device 7 and the hot water storage tank 1 are disposed in the case 8 having a rectangular planar shape, and the length in the direction D of FIG. It is conceivable to shorten the length) and, for example, provide the door 9 on the short side of one end of the case 8.

  In this way, even if the space accompanying the opening and closing of the door 9 is taken into consideration, it is not necessary to widen the space in the direction D of the figure of the heat source device, so it is easy to arrange the heat source device on the back side of a house, for example. And when the door 9 is opened, it can arrange so that the surface of the front cover 10 of the auxiliary heat source device 7 may be exposed to the surface which opened the door 9, and repairs and maintenance of the auxiliary heat source device 7 is performed suitably. be able to. Further, by providing the hot water storage tank 1 with a low frequency of repair etc. on the back side as viewed from the door 9 side, an appropriate arrangement configuration can be obtained.

  However, the thermistor 6 provided in the hot water storage tank 1 often requires maintenance or repair as compared to the hot water storage tank 1 itself, and when arranged as shown in FIG. Problems such as being unable to

  Therefore, it is conceivable to provide a door that can be opened and closed from the direction shown by the broken line arrow T in FIG. 6, but if doing so, a space for opening the door 9 to the front side is also required. The problem that space can not be achieved arises, and the problem that the configuration of case 8 becomes complicated by the provision of two doors also leads to an increase in cost.

  Also, in recent years, the resin-made hot water storage tank 1 has been applied for weight reduction and price reduction, but since the resin has a small thermal conductivity, the resin-made hot water storage tank 1 Even when the thermistor 6 is attached to the outside of the side wall of the hot water storage tank 1 as in the case of the hot water storage tank 1 made of stainless steel, the hot water temperature in the hot water storage tank 1 can not be accurately detected.

  Therefore, it is also considered to provide the thermistor 6 in the hot water storage tank 1, but in such a case, the temperature detected by the thermistor 6 provided in the hot water storage tank 1 can be grasped outside the hot water storage tank 1. In order to provide a signal line etc., the expensive member for maintaining seals, such as a penetration part which penetrates a signal line, is needed, and it is a problem.

  The present invention has been made to solve the above-mentioned problems, and an object thereof is to be able to accurately detect the temperature of liquid in a storage tank such as a storage tank for each liquid level. It is an object of the present invention to provide a low cost heat source device that can be disposed in a space-saving manner by providing a liquid storage device that is easy to use as a heat source or the like and the liquid storage device.

  In order to achieve the above object, the present invention is a means for solving the problems with the following configuration. That is, the liquid storage apparatus of the first invention has a liquid storage tank for storing liquid, and a loop pipeline connecting the upper end side and the lower end side of the liquid storage tank outside the liquid storage tank. The loop conduit has an erected portion erected in the vertical direction from the upper end side to the lower end side of the liquid storage tank, and the erected portion is in close proximity to the side wall of the liquid storage tank through a gap And a plurality of temperature detection means are disposed at the vertical portion of the loop pipe line in the vertical direction with a space therebetween, and the temperature detection means are each provided with a height of the temperature detection means. The means for solving the problem is constituted by the constitution comprising liquid temperature detection means in the storage tank for detecting the liquid temperature in the storage tank at the liquid level in the storage tank corresponding to the length.

  Further, in the liquid storage apparatus of the second invention, in addition to the configuration of the first invention, the liquid storage tank is thermally connected to a heating means for heating the liquid in the liquid storage tank, A liquid lead-out passage for leading out the liquid stored in the liquid tank from the upper end side of the liquid storage tank and leading it to the liquid supply destination side is connected to the upper end side of the liquid storage tank. The liquid storage tank has a communication passage communicating with the lower end side of the liquid storage tank, and the liquid storage tank passes from the connection portion of the liquid outlet passage with the liquid storage tank to the connection portion with the communication passage via the communication passage. The passage leading to the lower end side of the above is characterized in that a loop pipeline in which a plurality of temperature detection means are disposed at an interval to each other is formed at the erected portion.

  Further, in the liquid storage apparatus of the third invention, in addition to the configuration of the second invention, when the liquid in the liquid storage tank is discharged through the liquid discharge passage, the liquid discharge passage is completed from the end of the liquid discharge. It is characterized in that it has a liquid temperature stabilization information detecting means for obtaining information on the time taken for the temperature of each liquid level in the liquid to reach the temperature corresponding to the temperature of each liquid level in the liquid storage tank.

  Furthermore, in addition to the configuration of the first, second or third invention, the fourth invention is characterized in that the water storage tank is a hot water storage tank for storing hot and cold water as a liquid.

  Furthermore, in addition to the configuration of any one of the first to fourth inventions, the fifth invention is characterized in that the liquid storage tank is formed of a tank made of a resin.

  Further, according to the heat source apparatus of the sixth invention, the liquid storage apparatus of any one of the first to fifth inventions, and a liquid discharge passage connected from the liquid storage tank of the liquid storage apparatus to the liquid storage tank An auxiliary heat source device capable of heating the liquid drawn through is disposed in a common case, and the liquid storage device is disposed on the surface where the door is opened when the door provided in the case is opened. The arrangement is made such that the erected portion of the loop conduit is exposed and the configuration is taken as means for solving the problem.

  In the liquid storage apparatus of the present invention, a loop pipe line connecting the upper end side and the lower end side of the liquid storage tank outside is provided in the liquid storage tank for storing liquid, and the loop pipe line Since the erected portion is erected in the vertical direction from the upper end side to the lower end side of the liquid storage tank, and the erected portion is juxtaposed with or adjacent to the side wall of the liquid storage tank via a gap And the level of the liquid retained in the erected portion of the loop channel and the level of the liquid stored in the storage tank according to the principle of siphon (the principle of siphon described using Pascal's principle) Is the corresponding configuration.

  In the present invention, by arranging a plurality of temperature detection means in the up-and-down direction at the erected portion of the loop pipe line, the temperature detection means respectively arrange the temperature detection means. Since the liquid temperature in the liquid storage tank is detected as liquid temperature detection means for detecting the liquid temperature in the liquid storage tank at the liquid level in the liquid storage tank corresponding to the height, the temperature provided at the erected portion of the loop pipeline By grasping the temperature detected by the detection means, it is possible to grasp the liquid temperature in the hot water storage tank for each liquid level corresponding to the arrangement position of the temperature detection means.

  Therefore, even if the liquid storage tank is made of resin, for example, the temperature for each liquid level of the liquid in the liquid storage tank can be appropriately detected. Therefore, the liquid temperature detection means in the liquid storage tank is provided inside the liquid storage tank as in the prior art. It is not necessary to provide the configuration, and it is possible to solve the problem caused by the arrangement of the liquid temperature detection means in the storage tank. And the temperature detection means provided in the standing part of the said loop channel can be variously utilized as a liquid temperature detection means in a storage tank.

  Further, by thermally connecting the liquid storage tank to the heating means for heating the liquid in the liquid storage tank, the liquid in the liquid storage tank can be appropriately heated by the heating means, and the liquid is stored in the liquid storage tank In the liquid storage tank appropriately heated as described above, by connecting the liquid discharge passage leading out from the upper end side of the liquid storage tank to the liquid supply destination side to the upper end side of the liquid storage tank The liquid of the present invention can be suitably led out and used through the liquid lead-out passage.

  A communication passage is provided to communicate the liquid outlet passage with the lower end side of the liquid storage tank, and the liquid outlet passage passes from the connection portion with the liquid storage tank to the connection portion with the communication passage via the communication passage. By forming a loop pipe line in which a plurality of temperature detection means are disposed at intervals on the erected portion by a path leading to the lower end side of the liquid storage tank, a liquid pipe which is originally required can be looped It can be used as part of the road. Therefore, the device configuration can be simplified by that amount, and the device cost can be reduced.

  In addition, when the liquid in the liquid storage tank is discharged through the liquid discharge passage, the inside of the liquid discharge passage is filled with the liquid discharged from the liquid storage tank. By the temperature detection means provided at the erected portion of the above, the liquid temperature in the liquid storage tank at the liquid level in the liquid storage tank corresponding to the arrangement height of the temperature detection means can not be detected.

  Therefore, the liquid temperature stabilization is carried out to obtain information on the time taken from the end of the liquid delivery to the temperature corresponding to the temperature for each liquid level of the liquid in the liquid storage tank after the liquid level in the liquid discharge passage reaches the temperature for each liquid level. If an information detection means is provided and temperature detection is performed by the temperature detection means based on time information obtained by the liquid temperature stabilization information detection means, the temperature for each liquid level of the liquid in the liquid storage tank can be appropriately determined. It can be detected.

  Furthermore, by using the storage tank as a storage tank for storing hot and cold water as a liquid, it is possible to form a hot water supply apparatus and a heat source apparatus capable of hot water supply using the hot water stored in the storage tank, and use the storage apparatus for various applications. It can be used to

  Furthermore, by forming the liquid storage tank with a resin tank, it is possible to reduce the weight and cost of the liquid storage tank, and as described above, in the present invention, even if the liquid storage tank is made of resin, liquid storage is possible. Since the temperature of the liquid in the tank can be detected for each liquid level, the conventional problem in the case where the liquid storage tank is made of resin can also be solved.

  Furthermore, according to the heat source apparatus of the present invention, the liquid storage apparatus of the present invention is applied, and an auxiliary heat source apparatus capable of heating the liquid drawn from the liquid storage tank of the liquid storage apparatus through the liquid outlet passage is stored. Arranged in a case common to the device, and when the door provided in the case is opened, the erected portion of the loop line of the liquid storage device is exposed on the surface where the door is opened. Thus, the following effects can be achieved.

  That is, for example, if the case is formed in a rectangular shape, the heat source device can be easily disposed according to the user's request when the heat source device is disposed on the back side of a house, for example. In the configuration in which the storage tank temperature detection means is provided outside the side wall, if the auxiliary heat source device with high maintenance frequency is provided on the side close to the door of the case and the liquid storage tank is provided on the side far from the door There is a problem that maintenance of the detection means can not be performed. On the other hand, according to the heat source apparatus of the present invention, the problem can be avoided as follows.

  That is, in the heat source apparatus of the present invention, for example, when the door is provided on the short side of the rectangular shape of the case and the door is not provided on the long side, the space required for the arrangement of the heat source apparatus Since the heat source apparatus can be disposed, for example, in the installation space of the heat source apparatus on the back side of the house and the auxiliary heat source apparatus is disposed on the door side of the case in this configuration, maintenance and repair of the auxiliary heat source apparatus Easy to do. And if a liquid storage tank which hardly requires maintenance etc. is arrange | positioned in the back side rather than an auxiliary heat-source apparatus seeing from a door side, an appropriate arrangement configuration can be taken.

  Also in the present invention, the means for detecting the temperature of the liquid in the liquid storage tank may require maintenance, but the door is opened when the erected portion of the loop pipeline is opened. By providing it in a position exposed to the rough surface, maintenance and repair of the temperature detection means provided at the erected portion of the loop pipeline can be facilitated (as in the prior art, the temperature inside the liquid storage tank on the side wall of the liquid storage tank) Unlike the case where the detection means is provided, maintenance of the temperature detection means functioning as the storage tank temperature detection means is not impossible. Therefore, the heat source device of the present invention can be a heat source device that is easy to arrange, and easy to perform maintenance and repair.

It is a typical system configuration figure of one example of a heat source device using a liquid storage device concerning the present invention. It is a typical system block diagram for demonstrating the loop channel provided in the heat-source apparatus of the Example shown in FIG. It is a typical system figure for explaining heat recovery operation in a heat source device of an example. It is a schematic diagram for demonstrating the other Example of the liquid storage apparatus which concerns on this invention. It is a schematic diagram which shows the prior art example of the heat-source apparatus using the liquid storage apparatus provided with the hot water storage tank. It is a schematic diagram for demonstrating the problem of the heat-source apparatus shown in FIG.

  Hereinafter, embodiments of the present invention will be described based on the drawings. In the description of the present embodiment, the same components as those in the above-described example will be assigned the same reference numerals, and the redundant description will be omitted or simplified.

  FIGS. 1 and 3 schematically show the system configuration of a heat source apparatus provided with an embodiment of a liquid storage apparatus according to the present invention. Similar to the conventional example shown in FIG. 5, the heat source apparatus 3 shown in these figures includes the heating element 2, the hot water storage tank 1, and the auxiliary heat source apparatus 7, and the hot water storage tank 1 and the auxiliary heat source apparatus 7 Is housed in the same case 8, but since FIG. 1 and FIG. 3 are system diagrams, they are shown by a diagram disposed at a position separated from the hot water storage tank 1 and the auxiliary heat source device 7.

  Further, in addition to the passages described in the heat source apparatus of the conventional example shown in FIG. 5, the drainage passages 26, 28, the overflow piping 29, and the bypass passage 30 are shown in FIGS. Accordingly, drainage through drainage passages 26 and 28, draining of water through overflow piping 29, circulation of water through bypass passage 30, and the like are appropriately performed, and such configuration and operation are well known, and therefore details thereof The description is omitted.

  The auxiliary heat source device 7 is provided with a hot water supply circuit (not shown), and has a configuration in which hot water passing through the hot water supply passage 18 of the hot water supply circuit is drawn out to an appropriate hot water supply destination such as a kitchen or a bathroom. . In FIGS. 1 and 3, an example of showering hot water in a bathroom as an example of a hot water supply destination is schematically shown using a diagram of the shower head 120.

  A hot water supply heat exchanger is provided in the hot water supply circuit, and the hot and cold water introduced from the hot water storage tank 1 through the hot water passage 14 and then introduced into the auxiliary heat source device 7 through the hot and cold water circulation passage 16 It is configured to be heated by the hot water supply heat exchanger so that hot water can be supplied. Further, the auxiliary heat source device 7 is connected to a bathtub 27 via a reheating circulation path 25 having a forward pipe 24 and a return pipe 23.

  In the present embodiment, the hot water storage tank 1 is formed of a resin tank, and the side wall of the hot water storage tank 1 is not provided with the thermistor 6 provided in the conventional example. The most characteristic configuration of the present embodiment is, as shown by the solid line in FIG. 2, the standing of the loop pipeline connecting the upper end side and the lower end side of the hot water storage tank 1 outside the hot water storage tank 1. The site 4 is provided with a thermistor 5 which functions as a liquid storage tank liquid temperature detecting means for detecting the temperature of the liquid (hot water) in the hot water storage tank 1 at the liquid level (water level) in the hot water storage tank 1.

  Specifically, in the present embodiment, the hot water passage 14 and the water supply passage 11 for guiding the hot water stored in the hot water storage tank 1 from the upper end side of the hot water storage tank 1 to the liquid supply destination (hot water supply destination) side. (Ie, a portion of the water supply passage 11 and the branch passage 17 function as a communication passage for communicating the hot water passage 14 with the lower end side of the hot water storage tank 1) Of the hot water storage tank 1 by the passage extending from the connection portion of the passage 14 with the hot water storage tank 1 to the connection portion with the communication passage and reaching the lower end side of the hot water storage tank 1 via the communication passage A loop line connecting the upper end side and the lower end side of 1 is formed.

  Then, in the loop pipeline, a standing portion 4 vertically erected from the upper end side to the lower end side of the hot water storage tank 1 is formed, and this standing portion 4 is parallel to the side wall of the hot water storage tank 1 via a space. A plurality of thermistors 5 as temperature detecting means are provided at the vertical installation site 4 of the loop pipeline in the vertical direction with an interval therebetween. Each of the thermistors 5 constitutes a liquid temperature detection means in the storage tank for detecting the liquid temperature in the hot water storage tank 1 at the liquid level in the hot water storage tank 1 corresponding to the arrangement height of each thermistor 5 The erected portion 4 where the thermistor 5 is disposed is arranged such that when the door 9 provided in the case 8 is opened, the door 9 is exposed to the opened surface.

  Further, the heat source device 3 of the present embodiment is provided with a control device (not shown), and when the water as the liquid of the hot water storage tank 1 is drawn through the hot water passage 14, the control device is provided. Liquid temperature stabilization information for obtaining information on the time taken from the end of the liquid delivery to the temperature corresponding to the temperature for each liquid level of the liquid in the hot water storage tank 1 from the liquid level in the liquid discharge passage Detection means are provided.

  The liquid temperature stabilization information detection means takes a time from the end of the liquid delivery to the temperature corresponding to the temperature for each liquid level of the liquid in the hot water storage tank 1 at the liquid level in the liquid discharge passage. Information is obtained based on, for example, the temperature of the hot water passing through the hot water passage 14 and the outside air temperature at the time of hot water supply through the hot water passage 14. The related data of the temperature of the hot water, the outside air temperature and the time information is previously given to the liquid temperature stabilization information detecting means, and the liquid temperature stabilization information detecting means comprises the related data and the temperature of the hot water and the outside air temperature Based on the above, time information is required to be taken until the temperature for each liquid level of the liquid in the liquid discharge passage reaches the temperature for each liquid level of the liquid in the hot water storage tank 1 from the end of the liquid discharge. The method of detecting time information by the liquid temperature stabilization information detecting means is not particularly limited, and is appropriately set.

  In the present embodiment, the arrangement configuration of the thermistor 5 at the erected portion 4 of the loop pipeline as described above, the temperature detection configuration by the thermistor 5, the arrangement configuration of the erected portion 4 in the case 8, and The controller is provided with a liquid temperature stabilization information detecting means, and the controller has a hot water supply operation using the heat source device 3, a pouring operation into the bath 27, and a bath reheating operation. A configuration for performing appropriate operation control such as is also provided. For example, selection of heating and non-heating of hot water (water) introduced into the auxiliary heat source device 7, control during heating, and the like are also performed by the control device.

  Since these control methods are well known, the detailed description thereof is omitted, but the control device is connected with a remote control device (not shown) provided at an appropriate place such as a kitchen, a bathroom, a living room, etc. The appropriate control is performed so that the hot water of the hot water supply set temperature determined by the operation of the remote control device can be supplied.

  In FIGS. 1 and 3, 19, 20, 21, 35, 36, 38 are solenoid valves, 22 is a three-way valve, 43, 44 are check valves, 31, 61 are filters, 39 Is a flow sensor, reference numerals 40, 41, 42 are thermistors, reference numerals 50, 51, 52, 53, 54, 55 are connection ports, reference numerals 32, 33, 37, 56 are valves, respectively. When the hot water in the hot water storage tank 1 is heated, diagonal lines are drawn on the passage part through which the water passes. In FIG. 1, diagonal lines are written on the passage part through which the water passes when hot water is supplied from the hot water storage tank 1.

  As shown in FIG. 3, the heating of the hot and cold water in the hot water storage tank 1 is performed by heating the water sent to the heating element 2 from the lower side of the hot water storage tank 1 through the water supply passage 12 by the exhaust heat of the heating element 2. The hot water is introduced into the hot water storage tank 1 from the recovery passage 13 and stored in the hot water storage tank 1. On the other hand, hot water from the hot water storage tank 1 passes through the hot water passage 14 as shown in FIG. The hot water drawn out and the water passing through the water supply passage 11 and the branch passage 17 are appropriately mixed and drawn out by the control of the mixing valve 15.

  The present invention is not limited to the embodiments described above, and various aspects can be adopted without departing from the technical scope of the present invention. For example, although the hot water storage tank 1 and the auxiliary heat source device 7 are housed in the same case 8 in the above embodiment, the hot water storage tank 1 and the auxiliary heat source device 7 are limited to be housed in the same case 8 Alternatively, they may be arranged individually.

  Further, in the above embodiment, as shown by the solid line in FIG. 2, a loop line having the hot water passage 14 and a part of the water supply passage 11 and the branch passage 17 is formed. In order to detect the temperature for each liquid level in the storage tank such as the hot water storage tank 1 etc. separately from the hot water passage 14 etc., for example, as shown in FIG. It is also possible to provide a dedicated loop line in the housing, and to provide a plurality of thermistors 5 at intervals on the standing site 4 to function as temperature detection means in the storage tank. It may be provided close to the tank 1.

In addition, since FIG. 4 is a schematic view, it is shown without considering the design matters about the thickness of the loop conduit, and the thickness of the loop conduit is shown thin. However, FIG. In the configuration as shown in FIG. 4, in order to make the liquid level of A _{1 and} the liquid level of A ₂ the same, as shown in FIG. 4 (b), (c), (d) respectively, It is necessary to form the thickness of the conduit 70 so that the liquid can flow. In particular, in FIG. 4 (d), since the flow in which the liquid opposes in the pipe line 70 is generated, the piping thickness is required accordingly, and when constructing the configuration as shown in FIG. 4 (a), It is important to form a liquid storage device in consideration of the thickness of the pipe 70. In FIG. 4A, reference numeral 60 denotes a heat insulating material.

  Furthermore, the storage tank of the hot water storage tank 1 or the like is not limited to the tank made of resin, and may be made of stainless steel as in the prior art, or may be formed of other materials. Further, a liquid storage tank for storing liquid other than hot water may be provided to form a liquid storage device or a heat source device.

  Furthermore, the heating element 2 is not necessarily a power generation device, and as described in the conventional example, for example, a solar water heater unit or a heat pump unit provided with a heat collector for collecting solar heat may be used as the heating element 2 You can also. However, when the heating element 2 is formed by a power generation device, power can also be used by supplying the power generated by the power generation device to the power load device of the user, so a heat source device with more convenience and energy saving. Can be realized.

  Furthermore, the present invention has a storage tank such as a hot water storage tank (hot water storage tank) 1 and a loop line provided outside the tank, and the plurality of thermistors 5 are mutually spaced apart from each other at the erected portions 4 of the loop line. The system configuration of the liquid storage apparatus and the details of the system configuration of the heat source apparatus equipped with the liquid storage apparatus are not particularly limited, and may be appropriately determined. It is set.

  The liquid storage device and the heat source device according to the present invention can accurately detect the temperature of each liquid level in the liquid storage tank and can easily use the liquid in the liquid storage tank as a heat source or the like. It can be used as a liquid storage device or a heat source device.

Reference Signs List 1 hot water storage tank 2 heating element 3 heat source device 4 erected portion 5 thermistor 11 water supply passage 12 water supply passage 13 heat recovery passage 14 hot water passage 15 three-way valve 16 hot water communication passage 17 branch passage 70 pipeline

Claims (6)

  The liquid storage tank has a liquid storage tank, and a loop line connecting the upper end side and the lower end side of the liquid storage tank outside the liquid storage tank, and the loop line is the upper end of the liquid storage tank. And a standing portion provided in the vertical direction from the side to the lower end side, and the standing portion is juxtaposed with or adjacent to the side wall of the liquid storage tank with a space between them; A plurality of temperature detection means are disposed at the erected portion in the vertical direction with a space therebetween, and each of the temperature detection means is at the liquid level in the liquid storage tank corresponding to the arrangement height of the temperature detection means. What is claimed is: 1. A liquid storage device comprising a liquid temperature detection means in a liquid storage tank for detecting a liquid temperature in a liquid storage tank.   The liquid storage tank is thermally connected to heating means for heating the liquid in the liquid storage tank, and the liquid stored in the liquid storage tank is drawn out from the upper end side of the liquid storage tank to supply the liquid A liquid lead-out passage leading to the front side is connected to the upper end side of the liquid storage tank, and has a communication passage communicating the liquid lead-out passage with the lower end side of the liquid storage tank. A plurality of temperature detection means are arranged at intervals through the passage from the connection with the liquid tank to the connection with the communication passage and the passage extending from the connection with the communication passage to the lower end of the liquid storage tank via the communication passage. The liquid storage device according to claim 1, wherein a set loop conduit is formed.   When the liquid in the storage tank is discharged through the liquid discharge passage, the temperature for each liquid level in the liquid discharge passage from the end of the liquid discharge is the temperature for each liquid level in the liquid storage container. 3. A liquid storage device according to claim 2, further comprising liquid temperature stabilization information detection means for obtaining time information required to reach the corresponding temperature.   The liquid storage apparatus according to claim 1 or 2, wherein the liquid storage tank is a hot water storage tank for storing hot and cold water as a liquid.   The liquid storage apparatus according to any one of claims 1 to 4, wherein the liquid storage tank is formed of a resin tank.   The liquid storage apparatus according to any one of claims 1 to 5, and a liquid that can be heated through a liquid discharge passage connected to the liquid storage tank from the liquid storage tank of the liquid storage apparatus can be heated. The auxiliary heat source device is disposed in a common case, and when the door provided in the case is opened, the erected portion of the loop conduit of the liquid storage device is on the surface where the door is opened. What is claimed is: 1. A heat source apparatus comprising a liquid storage device characterized in an exposed arrangement.

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