JP4858760B2 - Storage heat source device and storage heat source system - Google Patents

Description

  The present invention relates to a storage heat source device and a storage heat source system.

Conventionally, a storage heat source device including two storage tanks as disclosed in Patent Document 1 below is provided. The storage-type heat source device described in Patent Document 1 below is configured to heat low-temperature hot water supplied from an external water supply source in a heat source including a heat pump unit, and distribute and store the heated hot water in each storage tank. It is said that. And when the heat pump unit starts up, hot water supplied from a water supply source is introduced into the bottom of each storage tank, so that hot water stored in each storage tank is pushed out and used for hot water supply. Therefore, the storage heat source device disclosed in Patent Document 1 below is adjusted to a desired temperature immediately after the start of the hot water supply operation while adopting a heat source such as a heat pump unit that cannot obtain a large amount of thermal energy at the time of startup. Hot water can be supplied for hot water supply.
JP 2005-226858 A

  As described above, the storage heat source device disclosed in Patent Document 1 employs a configuration in which hot water heated in the heat source is distributed and stored in two storage tanks. Therefore, in the above-described storage heat source device, the amount of hot water flowing into each storage tank in a heated state is small when a storage operation for heating and storing hot water is performed. Therefore, in the above-described configuration, the period during which the amount of hot and heated hot water is small with respect to the amount of low-temperature hot water stored in each storage tank during the storage operation is long. is assumed.

  Further, in the storage heat source device disclosed in Patent Document 1, a heat pump unit is employed as a heat source. When a heat source having a low heating capacity such as a heat pump unit is employed, the flow rate of hot water is often extremely low in order to sufficiently heat the hot water. Therefore, in the storage-type heat source device disclosed in Patent Document 1, not only the flow rate of hot water distributed to each storage tank is small, but also its flow rate is low, and a predetermined amount of hot hot water is stored in each storage tank. It is assumed that the period until only the liquid is accumulated, that is, the period in which a large amount of low-temperature hot water and a small amount of high-temperature hot water exist in a single storage tank is further prolonged.

  As mentioned above, if the amount of hot water is small relative to the amount of low temperature hot water existing in the storage tank or if this period continues for a long time, the hot water is easy to dissipate and heat energy is lost accordingly. Occurs. Further, if the hot water heated in this way dissipates heat, the hot water previously heated must be reheated in some cases, and energy loss will occur accordingly. Furthermore, if hot hot water radiates heat in the storage tank, the amount of hot water that can be supplied from the storage tank and supplied for hot water supply decreases, or the temperature of hot water that can be supplied decreases. The problem that the feeling of use is impaired may also occur. Therefore, when building a storage heat source system by combining a storage heat source device having a plurality of storage tanks or a storage heat source device, the amount of low-temperature hot water present in the storage tank from the viewpoint of thermal energy efficiency, etc. On the other hand, it is necessary to prevent the amount of high-temperature hot water from becoming small, or to keep the period of such a state for a long time.

  Accordingly, the present invention provides a storage heat source device that includes a plurality of storage tanks, and that can suppress a thermal energy loss due to a mixture of high-temperature hot water and low-temperature hot water in the storage tank, and a storage type. The purpose is to provide a heat source system.

Accordingly, the invention according to claim 1, which is provided to solve the above-described problem, is a storage type for a basic unit capable of constructing a storage type heat source system by pipe connection to a storage type heat source device for an extension unit. A heat source device, a first storage tank capable of storing a liquid heated by thermal energy generated in the heat source, a first top-side channel connected to the top side of the first storage tank, and a first storage The first bottom channel connected to the bottom side of the tank, the first liquid channel capable of circulating the liquid between the heat source and the first storage tank, and the bottom side of the first storage tank. A storage-type heat source device having a bottom-side connection flow path and a top-side connection flow path connected to the top side of the first storage tank, the second storage tank capable of storing liquid, and the top of the second storage tank A second top side flow path connected to the side; 2 A second bottom side channel connected to the bottom side of the storage tank and a second liquid channel, and the second liquid channel is branched from the main stream part and the main stream part of the second storage tank. The top side branch part connected to the top side, the bottom side branch part branched from the main stream part and connected to the bottom side of the second storage tank, and the conduction state between the top side branch part and the bottom side branch part and the main stream part can be adjusted. And a main flow portion of the second liquid channel of the storage heat source device for the extension unit on the top side connection flow channel. the are possible pipe connection pipe connectable der the second bottom side channel of the storage type heat source device for expansion unit on the bottom side connecting passage is, middle top side connecting passage of the first top side passage Is connected to the top-side flow path, and the top-side connection flow path and the first A tank connection channel is connected between the connection part A with the part side channel, the connection part C with the first top side channel and the first storage tank, and the tank connection channel is connected to the tank connection channel. a second top side channel of the storage type heat source device is a storage type heat source and wherein a pipe connectable der Rukoto.

  The storage heat source device of the present invention derives the liquid stored in the first storage tank from the bottom side of the first storage tank via the first liquid flow path and heats it at the heat source, and heats the top side by the heat source. By introducing the liquid, the liquid in the first storage tank can be heated. In the storage heat source device of the present invention, the main stream portion of the second liquid channel of the extension unit is connected to the top side connection channel, and the second bottom side channel of the extension unit is connected to the bottom side connection channel. In the connected state, the first storage tank was heated by adjusting the flow path adjusting means provided in the second liquid flow path so that the main flow portion and the top side branch portion of the second liquid flow path are conducted. Part or all of the liquid stored in the state can be replaced with part or all of the low-temperature liquid present in the second storage tank.

  More specifically, a part or all of the liquid stored in the heated state in the first storage tank is taken out from the top side of the first storage tank through the top side connection flow path, and this is taken out as the second liquid flow. It can introduce | transduce into the top part side of a 2nd storage tank via the main stream part and top part side branch part of a path. Further, along with this, the liquid in the second storage tank can be pushed out from the bottom side of the second storage tank and introduced into the first storage tank from the bottom side. For this reason, the storage heat source device of the present invention is configured such that the liquid in the first storage tank is stored when a predetermined amount of high-temperature liquid is stored in the first storage tank in a state where the storage heat source device constituting the extension unit is connected by piping. And the liquid in the second storage tank can be replaced, while the high temperature liquid is stored in the second storage tank or while the high temperature liquid is stored in the second storage tank, Thermal energy loss and the like due to the presence of a small amount of high-temperature liquid in the presence of a large amount can be eliminated.

  According to the second aspect of the present invention, the bottom side connection flow path is connected to the first bottom side flow path, and passes from the first bottom side flow path to the first top side flow path via the first storage tank. In the middle of the route to reach the connection part A from the connection part A between the top side connection flow path and the first top side flow path or the connection part B between the bottom side connection flow path and the first bottom side flow path. The storage mold according to claim 1, wherein a valve capable of preventing inflow of liquid into the first storage tank or outflow of liquid stored in the first storage tank is provided in the middle of the route to reach. It is a heat source device.

  The storage-type heat source device of the present invention allows liquid to flow out of the first storage tank by closing a valve provided in the middle of the path from the first bottom-side channel to the first top-side channel through the first storage tank. Can be blocked. Therefore, when a storage heat source system is constructed by the storage heat source device of the present invention, when liquid is introduced from the outside to the bottom side of the second storage tank with the above-described valve closed, the liquid is stored in the second storage tank. Liquid can be taken out via the second top side flow path. Therefore, if the storage-type heat source device of the present invention is used, a storage-type heat source system that can supply the liquid stored in the second storage tank to the outside can be constructed.

The invention according to claim 3, before Symbol connecting portion D between the first top side passage and the tank connection channel, or, the connection from the connection portion B of the bottom side connecting flow path and the first bottom passage 2. The valve according to claim 1, wherein a valve capable of preventing inflow of liquid into the first storage tank or outflow of liquid stored in the first storage tank is provided in the middle of the path leading to the portion D. 3. This is a storage heat source device.

  According to such a configuration, the valve provided in the path from the first bottom side flow path to the first top side flow path through the first storage tank is closed, and the bottom side branch section and the main flow section of the second liquid flow path are Is adjusted so that the liquid in the second storage tank is taken out from the top side and a circulation flow is returned to the bottom side, and the thermal energy stored in the second storage tank via the liquid is adjusted. It can be taken out of the second storage tank.

According to a fourth aspect of the invention, according to any one of claims 1 to 3, characterized in that it has a flow path switching means capable of switching the conduction state of the first top side passage and the tank connection channel This is a storage heat source device.

  According to such a configuration, the flow of liquid in and out of the second storage tank constituting the extension unit can be adjusted by the flow path switching means.

The invention described in claim 5 constitutes a storage heat source device for an extension unit that can be connected to a storage heat source device for a basic unit by pipe connection to construct a storage heat source system. A possible second storage tank, a second top-side channel connected to the top side of the second storage tank, a second bottom-side channel connected to the bottom side of the second storage tank, and a second liquid And the second liquid channel includes a main stream part, a top side branch part branched from the main stream part, a bottom side branch part branched from the main stream part, a top side branch part, and A flow path adjusting means capable of adjusting the conduction state between the bottom side branch section and the main flow section, and a heat exchanger capable of transferring heat energy between the liquid flowing in the second liquid flow path and the other liquid. The top branch is connected to the top of the second storage tank, and the bottom branch is 2 A storage heat source device connected to the bottom side of the storage tank, which is connected to the first storage tank capable of storing the liquid heated by the thermal energy generated in the heat source, and to the top side of the first storage tank. The first top-side flow path, the first bottom-side flow path connected to the bottom side of the first storage tank, and the first liquid flow capable of circulating the liquid between the heat source and the first storage tank Pipe connection is possible to a storage heat source device for a basic unit having a path, a bottom-side connection flow channel connected to the bottom side of the first storage tank, and a top-side connection flow channel connected to the top side of the first storage tank The main flow part of the second liquid channel can be connected to the top connection channel of the storage heat source device that constitutes the basic unit, and the second bottom channel is connected to the bottom connection channel by piping possible der is, tank connected to the middle of the first top side passage Is intended to be a pipe connected to the reservoir type heat source apparatus for the base unit with a connection flow path, savings Tomegata heat source, characterized in that the second top side channel is a piping connectable to said tank connecting channel Device.

  In the storage heat source device of the present invention, the second liquid flow path has a top-side branch part and a bottom-side branch part, and the top-side branch part, the bottom-side branch part, and the main stream part are adjusted by adjusting the flow path adjusting means. And the conduction state can be adjusted. Therefore, in the storage heat source device of the present invention, the main flow portion of the second liquid channel is connected to the top connection channel of the storage heat source device constituting the basic unit, and the second bottom side flow is connected to the bottom connection channel. When the liquid is circulated in a state where the channel adjusting means is adjusted so that the top branch portion and the main flow portion are connected in a state where the paths are connected, the liquid stored in the first storage tank and the second storage The liquid stored in the tank can be replaced.

  More specifically, when the storage heat source system is constructed using the storage heat source device of the present invention, the liquid is circulated in a state where the flow path adjusting means is adjusted so that the top branch portion and the main flow portion are electrically connected. Then, a part or all of the high-temperature liquid existing on the top side of the first storage tank of the storage heat source device for the basic unit is taken out from the top side of the first storage tank through the top side connection flow path, Can be introduced to the top side of the second storage tank via the main flow part and the top side branch part of the second liquid channel. Further, when the liquid is introduced from the top side of the second storage tank, the liquid in the second storage tank is pushed out from the bottom side of the second storage tank and introduced to the bottom side of the first storage tank. Therefore, if a storage heat source system is constructed using the storage heat source device of the present invention, the second storage is performed by replacing the high-temperature liquid stored in the first storage tank with the liquid in the second storage tank. High temperature liquid can be stored in the tank, and when storing the high temperature liquid in the second storage tank or while storing the high temperature liquid in the second storage tank, a large amount of low temperature liquid and a small amount It is possible to prevent thermal energy loss and the like due to the presence of the high temperature liquid.

According to the configuration of the present invention, by introducing the liquid into the second storage tank through the second bottom side flow path, the liquid existing on the top side of the second storage tank is passed through the second top side flow path. Can be taken out from the second storage tank and supplied to the first top-side flow path constituting the storage heat source device for the basic unit.

According to the sixth aspect of the present invention, the second top-side channel and the second liquid channel are connected, and the channel that can adjust the conduction state between the second top-side channel and the second liquid channel. The storage heat source device according to claim 5, further comprising an adjusting unit.

According to such a configuration, the liquid in the second storage tank flows out from the top side of the second storage tank when the second top-side flow path and the second liquid flow path are brought into conduction by the flow path adjusting means. In addition, a circulating flow returning to the bottom side can be generated.

Here, in the storage heat source device according to claim 5 or 6 , the second top side flow path is directly or indirectly connected to the main flow part of the second liquid flow path, and can pump the liquid. It is desirable that a simple pump is arranged in the middle of the main part of the second liquid channel, and a heat exchanger is arranged in the main part and / or the bottom side branch part of the second liquid channel. Item 7 ).

  The storage-type heat source device of the present invention is configured on the condition that the flow path adjusting means operates the pump in a state where the main flow portion is electrically connected to the bottom side branch portion and is substantially non-conductive to the top side branch portion. The liquid in the storage tank can be taken out via the second top side flow path, and a circulating flow can be generated that passes through the heat exchanger and returns to the bottom side of the second storage tank. Therefore, according to this invention, the thermal energy required in a heat exchanger can be supplied via the liquid stored by the 2nd storage tank.

It is desirable that the storage heat source device according to claim 5 or 6 has a configuration in which a pump capable of pumping liquid is arranged in the main flow portion of the second liquid flow path (claim 8 ).

  According to this configuration, by operating a pump provided in the middle of the second liquid flow path, the liquid is circulated between the first storage tank and the second storage tank, and the liquid is replaced between the two. be able to.

  If the storage heat source system is constructed using the storage heat source device of the present invention, the liquid is circulated between the first storage tank and the second storage tank on the storage heat source device side constituting the basic unit. There is no need to provide a pump. Therefore, if the storage type heat source device of the present invention is used for an extension unit, the device configuration of the storage type heat source device constituting the basic unit can be simplified.

In particular, when the heat exchanger is provided in the main flow part or the bottom side branch part of the second liquid flow path as in the invention described in claim 7 , the pump is provided between the first storage tank and the second storage tank. The liquid in the second storage tank can be taken out via the second top-side flow path and supplied to the heat exchanger. That is, according to the present invention, the pump can be shared for a plurality of uses, which can contribute to simplification of the device configuration of the storage heat source device.

The invention according to claim 9 is the storage heat source device according to any one of claims 5 to 8 , characterized in that the heat exchanger is arranged in the main flow portion of the second liquid flow path.

  According to this configuration, in addition to the liquid in the second storage tank, the liquid in the first storage tank can be supplied to the heat exchanger. Therefore, according to the present invention, the liquid stored in both the first and second storage tanks can be effectively used for heat exchange in the heat exchanger.

A tenth aspect of the present invention is a storage heat source system that includes a storage heat source device for a basic unit and a storage heat source device for an extension unit, and is configured by connecting the two by piping. A storage heat source device for the unit, a first storage tank capable of storing the liquid heated by the heat energy generated in the heat source; a first top-side flow path connected to the top side of the first storage tank; A first bottom channel connected to the bottom side of the first storage tank, a first liquid channel capable of circulating liquid between the heat source and the first storage tank, and a bottom of the first storage tank A storage-type heat source device for an expansion unit according to any one of claims 5 to 9, comprising a bottom-side connection flow channel connected to the side and a top-side connection flow channel connected to the top side of the first storage tank. Consists of the storage heat source device described And the main part of the second liquid channel of the storage heat source device for the expansion unit is connected to the top side connection flow channel of the storage heat source device for the basic unit by piping, and the bottom of the storage heat source device for the basic unit A storage-type heat source system, wherein a second bottom-side flow path of a storage-type heat source device for an extension unit is connected to a side connection flow path by piping.

  The storage heat source system of the present invention heats the liquid stored in the first storage tank in the storage heat source device constituting the basic unit by circulating it between the heat source via the first liquid flow path. Can do. Further, the storage heat source system of the present invention adjusts the flow path adjusting means provided in the second liquid flow path to connect the top side connection flow path of the storage heat source device for the basic unit and the storage type for the extension unit. By bringing the main flow portion of the second liquid flow path of the heat source device into a conductive state, a part or all of the liquid stored in the heated state in the first storage tank exists in the second storage tank. It can replace some or all of the cold liquid. Therefore, the storage heat source system of the present invention can replace the high-temperature liquid in the first storage tank and the low-temperature liquid in the second storage tank at a time. Therefore, the storage heat source system of the present invention has a large amount of low-temperature liquid and a small amount of high-temperature liquid when storing a high-temperature liquid in the second storage tank or while storing a high-temperature liquid in the second storage tank. The thermal energy loss due to the presence of the liquid in a single tank can be eliminated.

The invention according to claim 11 is a storage type heat source system comprising a storage type heat source device for a basic unit and a storage type heat source device for an extension unit, wherein the both are connected by piping. A storage heat source device for the unit is configured by the storage heat source device according to any one of claims 1 to 4, and the storage heat source device for the extension unit includes a second storage tank capable of storing liquid. A second top side channel connected to the top side of the second storage tank, a second bottom side channel connected to the bottom side of the second storage tank, and a second liquid channel, The second liquid flow path includes a main stream part, a top branch part branched from the main stream part, a bottom branch part branched from the main stream part, a top branch part, a bottom branch part, and a main stream part. And a flow path adjusting means capable of adjusting a conduction state between the first liquid flow path and the second liquid flow path. A heat exchanger capable of transferring heat energy between the body and another liquid, the top branching portion being connected to the top side of the second storage tank, and the bottom branching portion being the second storage The main part of the second liquid flow path of the storage heat source device for the extension unit is connected to the top side connection flow path of the storage heat source device for the basic unit by pipe connection. The storage heat source system is characterized in that the second bottom side flow path of the storage heat source device for the extension unit is connected to the bottom side connection flow path of the storage heat source device for the basic unit by piping.

  The storage heat source system of the present invention is provided in a part or all of the high-temperature liquid heated in the storage heat source device for the basic unit and stored in the first storage tank, and the storage heat source device for the extension unit. A part or all of the liquid stored in the stored second storage tank can be replaced. Therefore, the storage heat source system of the present invention can replace the high-temperature liquid in the first storage tank and the low-temperature liquid in the second storage tank at a time. Therefore, the storage heat source system of the present invention has a large amount of low-temperature liquid and a small amount of high-temperature liquid when storing a high-temperature liquid in the second storage tank or while storing a high-temperature liquid in the second storage tank. The thermal energy loss due to the presence of the liquid in a single tank can be eliminated.

The invention according to claim 12 is a storage type heat source system having a storage type heat source device for a basic unit and a storage type heat source device for an extension unit, and configured by connecting both by piping. A first storage tank capable of storing a liquid heated by heat energy generated in the heat source, and a first top-side flow path connected to the top side of the first storage tank; A first bottom channel connected to the bottom side of the first storage tank, a first liquid channel capable of circulating liquid between the heat source and the first storage tank, and a first top side flow Connected to the middle of the first bottom side flow path, the tank connection flow path connected to the middle of the first top side flow path via the flow switching means, and the first bottom side flow path A bottom-side connection flow path, wherein the first top-side flow path and the top-side connection flow The flow path switching means is arranged between the connection portion A and the connection portion C between the first top-side flow path and the first storage tank, and the first storage via the first bottom-side flow path. By introducing the liquid from the bottom side into the tank, the liquid stored on the top side of the first storage tank can be led out of the first storage tank via the first top side flow path, and the first storage The liquid stored in the tank is led out from the bottom side of the first storage tank through the first liquid channel and heated in the heat source, and the liquid heated by the heat source is introduced into the first storage tank from the top side. The liquid in the first storage tank can be heated, and the storage heat source device for the extension unit is connected to the second storage tank capable of storing the liquid and the top side of the second storage tank Connected to the second top side flow path and the bottom side of the second storage tank It has a 2 bottom side flow path and a 2nd liquid flow path, and it can lead in and out of the liquid into the 2nd storage tank via the 2nd top side flow path and the 2nd bottom side flow path And the second liquid channel is connected to the top side connection channel of the storage heat source device for the basic unit by piping, and is branched from the main channel to the top side of the second storage tank. A pump having a connected top portion and a bottom branch portion branched from the main flow portion and connected to the bottom side of the second storage tank, and capable of pumping liquid midway; and a second heating system A heat exchanger capable of heating the liquid supplied to the external heat load by heat exchange with the liquid flowing in the second liquid flow path, and the liquid flowing in the main stream portion is either the top side branch portion or the bottom side branch portion. Can be selectively distributed to either of the above-mentioned basic units. The tank connection flow path of the storage heat source device and the second top side flow path of the storage heat source device for the extension unit are connected by piping, and the bottom side connection flow path of the storage heat source device for the basic unit is added. A storage-type heat source system characterized in that a second bottom side flow path for the unit is connected by piping.

  According to this configuration, a part or all of the liquid heated in the storage heat source device for the basic unit and stored in the first storage tank, and stored in the second storage tank in the storage heat source device for the extension unit. It is possible to replace a part or all of the liquid that has been used and store the high-temperature liquid in the second storage tank. Therefore, in the storage heat source system of the present invention, a certain amount of liquid can be replaced at a time between the first storage tank and the second storage tank, and the low temperature liquid and the high temperature liquid are single. It is possible to eliminate thermal energy loss due to the presence in the tank.

  According to the configuration described above, the liquid existing on the top side of the second storage tank is taken out via the second top side flow path, and thereby the main flow part of the second liquid flow path via the first top side flow path. And a circulating flow of liquid that passes through the bottom side connection flow path and returns to the bottom side of the second storage tank can be generated, and heat energy can be supplied to a heat exchanger provided in the middle of the second liquid flow path .

  Furthermore, according to the configuration described above, the liquid stored in the second storage tank is taken out via the second top-side flow path and supplied to the outside of the storage heat source system via the first top-side flow path. It is also possible. That is, according to the above-described configuration, the liquid stored in the second storage tank can be used not only as a medium for supplying thermal energy to the heat exchanger but also supplied to the outside. Therefore, according to the present invention, it is possible to provide a storage heat source system that can use the liquid stored in the second storage tank for various purposes.

The invention related to the present invention is a storage heat source system that includes a storage heat source device for a basic unit and a storage heat source device for an extension unit, and is configured by connecting the two by piping. A storage heat source device that constitutes the unit has a first storage tank capable of storing a liquid heated by heat energy generated in the heat source, and a first top-side flow path connected to the top side of the first storage tank; The first bottom channel connected to the bottom side of the first storage tank, the first liquid channel capable of circulating the liquid between the heat source and the first storage tank, and the first storage tank A top-side connection channel connected to the top side, and a bottom-side connection channel connected to the middle of the first bottom-side channel, and the bottom of the first storage tank via the first bottom-side channel The top side of the first storage tank by introducing liquid from the side The stored liquid can be led out of the first storage tank via the first top channel, and the liquid stored in the first storage tank can be derived from the first storage channel via the first liquid channel. The liquid in the first storage tank can be heated by introducing the liquid heated by the heat source into the first storage tank from the top side. The storage type heat source device includes a second storage tank capable of storing a liquid, a second top side channel connected to the top side of the second storage tank, and a second side connected to the bottom side of the second storage tank. It has a 2 bottom side flow path and a 2nd liquid flow path, and it can lead in and out of the liquid into the 2nd storage tank via the 2nd top side flow path and the 2nd bottom side flow path The second liquid flow path is a storage heat source device for the basic unit. A main flow part connected to the top side connection flow path of the pipe, a top branch part branched from the main flow part and connected to the top side of the second storage tank, and a bottom part of the second storage tank branched from the main flow part A pump having a bottom-side branch connected to the side and capable of pumping liquid midway, and heat of the liquid flowing through the second liquid flow channel supplying liquid supplied to a heat load outside the second heating system A heat exchanger that can be heated by exchange, and is capable of selectively flowing the liquid flowing through the main stream part to either the top side branch part or the bottom side branch part, and the second top side The flow path is connected to the second liquid flow path, the top side connection flow path, or a pipe connecting the second liquid flow path and the top side connection flow path, and the second bottom side flow path is the basic flow path. It is connected to the bottom side connection flow path of the storage heat source device for the unit. It shall be the butterfly.

  According to this configuration, part or all of the liquid heated in the storage heat source device for the basic unit and stored in the first storage tank, and part or all of the liquid stored in the second storage tank. Can be stored in the second storage tank. Therefore, according to the storage heat source system of the present invention, the high-temperature liquid stored in the first storage tank is collectively supplied to the second storage tank and replaced with the low-temperature liquid in the second storage tank. be able to. Therefore, according to the present invention, it is possible to minimize the possibility that a high-temperature liquid in the second storage tank radiates heat and causes thermal energy loss.

  According to the configuration described above, the liquid present on the top side of the second storage tank is taken out via the second top side channel, and is passed through the main stream part and bottom side connection channel of the second liquid channel. By returning to the bottom side of the second storage tank, thermal energy can be supplied to the heat exchanger provided in the middle of the second liquid flow path.

  Moreover, according to the above-described configuration, the liquid stored in the first storage tank is also taken out from the storage heat source device for the basic unit via the first top-side flow path and the top-side connection flow path. The main flow part, the bottom side branch part, the second storage tank, the second bottom side flow path, and the bottom side connection flow path of the second liquid channel can be passed through and returned to the bottom side of the first storage tank. Therefore, according to the above-described configuration, a circulation flow of the liquid is generated between the heat exchanger and the first storage tank, and the thermal energy stored in the first storage tank via the liquid is transferred to the heat exchanger. Can be supplied. Therefore, according to the present invention, not only the liquid stored in the second storage tank but also the liquid stored in the first storage tank can be supplied to the heat exchanger.

The invention according to claim 13 is a storage type heat source system having a storage type heat source device for a basic unit and a storage type heat source device for an extension unit, which are configured by pipe connection therebetween, A first storage tank capable of storing a liquid heated by heat energy generated in the heat source, and a first top-side flow path connected to the top side of the first storage tank; A first bottom channel connected to the bottom side of the first storage tank, a first liquid channel capable of circulating liquid between the heat source and the first storage tank, and a first top side flow Connected to the middle of the first bottom side flow path, the tank connection flow path connected to the middle of the first top side flow path via the flow switching means, and the first bottom side flow path A bottom-side connection flow path, wherein the first top-side flow path and the top-side connection flow The flow path switching means is arranged between the connection portion A and the connection portion C between the first top-side flow path and the first storage tank, and the first storage via the first bottom-side flow path. By introducing the liquid from the bottom side into the tank, the liquid stored on the top side of the first storage tank can be led out of the first storage tank via the first top side flow path, and the first storage The liquid stored in the tank is led out from the bottom side of the first storage tank through the first liquid channel and heated in the heat source, and the liquid heated by the heat source is introduced into the first storage tank from the top side. The liquid in the first storage tank can be heated, and the storage heat source device for the extension unit is connected to the second storage tank capable of storing the liquid and the top side of the second storage tank Connected to the second top side flow path and the bottom side of the second storage tank Two bottom side channels, a second liquid channel, and a top branch channel connected in the middle of the second top channel, the second top channel and the second bottom channel Through which the liquid can be led into and out of the second storage tank, and the second liquid flow path is connected to the top side connection flow path of the storage heat source device for the basic unit. A main stream part, a top branch part branched from the main stream part and connected to the top side of the second storage tank, and a bottom side branch part branched from the main stream part and connected to the bottom side of the second storage tank. And a pump capable of pumping liquid in the middle and a heat exchanger capable of heating the liquid supplied to the heat load outside the second heating system by heat exchange with the liquid flowing in the second liquid flow path. The liquid flowing through the main flow part is selectively distributed to either the top side branch part or the bottom side branch part. The top branch flow path is connected to the second liquid flow path, the top side connection flow path, or the middle of the pipe connecting the second liquid flow path and the top side connection flow path. The second top side flow path is connected to the tank connection flow path of the storage heat source device for the basic unit, and the second bottom side flow path is the bottom side of the storage heat source device for the basic unit. A storage-type heat source system characterized in that a pipe is connected to a connection flow path.

  According to this configuration, part or all of the liquid heated in the storage heat source device for the basic unit and stored in the first storage tank, and part or all of the liquid stored in the second storage tank. And the high temperature liquid can be stored in the second storage tank. Therefore, according to the storage-type heat source system of the present invention, the high-temperature liquid stored in the first storage tank is collected at a time and supplied to the second storage tank, so that the low-temperature liquid in the second storage tank Can be replaced. Therefore, according to the present invention, it is possible to minimize thermal energy loss and the like due to the presence of a large amount of low temperature liquid in the second storage tank with respect to the amount of high temperature liquid.

  According to the configuration described above, the liquid present on the top side of the second storage tank is taken out via the second top side channel, and is passed through the main stream part and bottom side connection channel of the second liquid channel. By returning to the bottom side of the second storage tank, thermal energy can be supplied to the heat exchanger provided in the middle of the second liquid flow path. Moreover, according to the above-described configuration, the liquid stored in the first storage tank also includes the top-side connection flow channel, the main flow portion of the second liquid flow channel, the bottom-side branching portion, the second storage tank, and the second bottom portion. By passing the side flow path and the bottom side connection flow path, it is possible to generate a liquid circulation flow between the heat exchanger and the first storage tank. Therefore, according to the present invention, not only the liquid stored in the second storage tank but also the liquid stored in the first storage tank can be supplied to the heat exchanger.

  Furthermore, in the storage-type heat source system of the present invention, the liquid stored in the second storage tank can be taken out via the second top-side channel and the first top-side channel and supplied to the outside. Therefore, in the storage type heat source system of the present invention, the liquid stored in the second storage tank can be used for various applications.

  ADVANTAGE OF THE INVENTION According to this invention, the storage-type heat-source apparatus which can suppress the thermal energy loss by having mixed a high temperature hot water and a low temperature hot water in a storage tank to the minimum while providing a some storage tank, and a storage type A heat source system can be provided.

(First embodiment)
Next, the storage heat source system and the storage heat source device according to the first embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a storage heat source system according to this embodiment. The storage type heat source system 1 is roughly divided into a basic unit 2 (storage type heat source device), an extension unit 3 (storage type heat source device), and a heat source 5 as shown in the figure, and is configured by connecting both pipes. . The basic unit 2 and the extension unit 3 each include a main tank 10 (first storage tank) and a sub tank 50 (second storage tank) that can store hot water (liquid), and the main tank 10 and the sub tank 50 are the center. The first heating system H1 (first heating system) and the second heating system H2 (second heating system) are formed.

  The basic unit 2 is configured such that hot water is heated and stored in the main tank 10 using heat energy generated in the heat source 5 configured by a heat pump circuit. The basic unit 2 is configured to be able to implement hot water supply for hot water supply or replenishment of hot water in a bathtub (not shown) alone.

  The basic unit 2 includes a main tank 10 and a heating circulation channel 11 (first liquid channel). The basic unit 2 is configured to recover the thermal energy generated in the heat source 5 via hot water (liquid) flowing through the heating circulation channel 11 and store it in the main tank 10. Functions as a heat source device. More specifically, the basic unit 2 is configured with a main tank 10 as a center, and includes a heating circulation channel 11, a bath circulation channel 13, a first top side channel 15, and a first bottom part. The side flow path 16 is connected.

  As shown in FIG. 1, the heating circulation passage 11 constitutes a circulation passage that connects the top portion 10 a and the bottom portion 10 b of the main tank 10. A heat source 5 is connected in the middle of the heating circulation channel 11. More specifically, the heating circulation flow path 11 is roughly divided into a heat source forward flow path 11a connected to the bottom 10b of the main tank 10 and a heat source return flow path 11b connected to the top 10a. It is connected. The heating circulation flow path 11 has a circulation pump 12 in the middle of the heat source return flow path 11b. By operating this, the heat circulation flow path 11 flows out from the bottom 10b side of the main tank 10 via the heat source forward flow path 11a. 5 and the heat source return flow path 11b, and a hot water circulating flow returning to the top 10a side of the main tank 10 can be generated.

  The main tank 10 has a configuration in which a plurality of (five in the present embodiment) temperature sensors 14a to 14e are attached in the height direction, that is, the elevation direction of the level of hot water stored therein. Each of the temperature sensors 14a to 14e functions as a temperature detection means for detecting the temperature of hot water stored at a height position where it is attached, and also has a predetermined temperature or temperature stored in the main tank 10. It also serves as a remaining amount detection means for detecting the amount of hot water in the range.

  More specifically, in the storage heat source system 1 of the present embodiment, hot water in the main tank 10 is taken out from the bottom 10b side by operating the circulation pump 12 as described later, and heat exchange heating is performed in the heat source 5. Then, it is set as the structure which returns to the top part 10a side.

  Here, generally, when the liquid is heated in the main tank 10 and returned to the top portion 10a in this way, the temperature difference from the liquid remaining on the top portion 10a side of the main tank 10 is equal to or higher than a predetermined temperature ( In the case of hot water, it is known that liquids having different temperature zones are stored in layers on the condition that the temperature is about 10 ° C. or higher, and so-called temperature stratification is formed.

  Based on this knowledge, in the storage heat source system 1 of the present embodiment, the flow rate of the hot water returned from the top 10a side to the main tank 10 by the operation of the circulation pump 12 becomes gentle enough not to destroy the temperature stratification described above. Have been adjusted so that. Therefore, when the circulation pump 12 is circulated under the operating condition of the heat source 5, hot hot water flows into the top 10 a side in the main tank 10, and hot water having different temperature zones in the height direction is layered in the main tank 10. It is stored and so-called temperature stratification is formed. Therefore, in the storage heat source system 1, hot water at a predetermined temperature or higher is based on the correlation between the detected temperatures of the temperature sensors 14 a to 14 e provided in the main tank 10 and the mounting positions of these temperature sensors 14 a to 14 e. It can be determined how much is stored in the main tank 10.

  More specifically, for example, when the detected temperatures of the temperature sensors 14a to 14c are each equal to or higher than a predetermined temperature and the detected temperatures of the other temperature sensors 14d and 14e are lower than the predetermined temperature, the top 10a side of the main tank 10 is used. It can be determined that an amount of hot water corresponding to the capacity from the position to the mounting position of the temperature sensor 14c is stored in a state of being heated to a predetermined temperature or higher.

  The heat source 5 operates using carbon dioxide or the like as a heat medium in the same manner as a conventionally known one, and the amount of heat energy generated per unit time along with the operation as compared with a combustion device that burns gas or liquid fuel. Is small. Therefore, the basic unit 2 operates the heat source 5 prior to the use of heat energy, stores the heat energy generated in association with the heat source 5 in the main tank 10 via hot water, and uses it to supply hot water or a bath. It is configured to be able to carry out reapproval.

  The first top side flow path 15 is a flow path connected to a position (connection portion C) on the top 10 a side of the main tank 10, and is a flow path mainly used for taking out hot water in the main tank 10. . The first top-side flow path 15 is provided with a pipe connection port 15a at the end, and can be connected to a curan or the like provided outside the first heating system H1.

  A three-way valve 17 is provided in the middle of the first top-side flow path 15 (connection portion D), and a tank connection flow path 18 is connected thereto. Further, in the middle of the first top-side flow path 15, when hot water is taken out from the main tank 10 via the first top-side flow path 15, that is, the terminal side of the first top-side flow path 15 relative to the three-way valve 17. The top side connection flow path 19 is connected to the position (connection part A) downstream in the hot water flow direction. Pipe connection ports 18 a and 19 a are provided at the ends of the tank connection channel 18 and the top side connection channel 19, respectively. The pipe connection ports 18a and 19a function as connection ports for pipe connection of the extension unit 3 to the basic unit 2, and are closed when the extension unit 3 is not connected.

  The first bottom side channel 16 is a channel connected to the bottom 10 b side of the main tank 10, and is used to introduce clean water (hot water) supplied from a water supply source (not shown) into the main tank 10. It is a flow path. The first bottom side channel 16 is provided with a pipe connection port 16a at the end, and can be connected to a water supply source or the like provided outside the first heating system H1.

  A bottom side connection flow path 21 is connected to the middle (connection portion B) of the first bottom side flow path 16. A pipe connection port 21 a is provided at the end of the bottom side connection flow path 21. The pipe connection port 21a functions as a connection port for pipe connection of the extension unit 3 to the basic unit 2, and is closed when the extension unit 3 is not connected.

  The bath circulation channel 13 is a channel configured by pipe-connecting a site on the top 10a side and a site on the bottom 10b side of the main tank 10. A memorial primary circulation pump 26 and a bath heat exchanger 27 are provided in the middle of the bath circulation passage 13. The basic unit 2 operates the memory primary side circulation pump 26 to take out hot water stored on the top 10a side of the main tank 10, supply it to the heat exchanger 27 for bath, and return it to the bottom 10b side. Can do.

  The bath heat exchanger 27 is a so-called liquid-liquid heat exchanger. The piping constituting the above-described bath circulation channel 13 is connected to the primary side of the bath heat exchanger 27. Further, a bath going-out flow path 28 and a bath return flow path 29 are connected to the secondary side of the bath heat exchanger 27, and hot water in the bath is connected between the bath (not shown) and the bath heat exchanger 27. This constitutes a bath system (thermal energy supply system) that can circulate the gas. A memorial secondary circulation pump 30 is provided in the middle of the bath return channel 29. Further, pipe connection ports 28 a and 29 a are provided at the ends of the bath going-out flow path 28 and the bath return flow path 29, respectively.

  The basic unit 2 can form a series of circulation flow paths that connect the bathtub and the heat exchanger 27 for bath by connecting the flow paths connected to the bathtub (not shown) to the pipe connection ports 28a and 29a. Therefore, when the memorial primary side circulation pump 26 and the memorial secondary side circulation pump 30 are operated in a state where a circulation channel is formed between the bath and the bath, the hot water in the bathtub is sequentially supplied to the bath heat exchanger 27. However, it can be heated (refreshed) by heat exchange with hot water flowing in the bath circulation channel 13.

  The extension unit 3 has a sub tank 50 (second storage tank) as in the case of the basic unit 2 described above, and a load terminal (not shown) such as heating provided outside using hot water stored therein. The heat medium such as antifreeze that circulates between them can be heat exchange heated. The sub tank 50 has substantially the same capacity as the main tank 10 described above.

  Similar to the main tank 10 described above, the sub tank 50 has a configuration in which a plurality of (in the present embodiment, five) temperature sensors 51a to 51e are attached in the height direction, that is, in the elevation direction of the level of hot water stored therein. ing. Similar to the temperature sensors 14a to 14e described above, the temperature sensors 51a to 51e function as temperature detecting means for detecting the temperature of hot water stored in the sub tank 50, and are stored in the sub tank 50. It has a function as a remaining amount detecting means for detecting the amount of hot water in a predetermined temperature or temperature range.

  A second top-side flow path 52 and a second bottom-side flow path 53 are connected to the top 50a and the bottom 50b of the sub tank 50, respectively. Pipe connection ports 52 a and 53 a are provided at the end portions of the second top-side flow path 52 and the second bottom-side flow path 53. The pipe connection ports 52a and 53a are used for pipe connection of the extension unit 3 to the basic unit 2, respectively.

  The extension unit 3 has a hot water transfer channel 60 (second liquid channel). The hot water transfer channel 60 has a pump 61, a heat exchanger 62, and a three-way valve 63 (channel adjusting means) in the middle, and has a pipe connection port 60a on one end side. The hot water transfer channel 60 is branched into a top side branching portion 65 and a bottom side branching portion 66 at a portion where the three-way valve 63 is provided. That is, the hot water transfer channel 60 is connected to a port 63a of the three-way valve 63 in the middle of the pump 61 and the heat exchanger 62 (hereinafter referred to as the main flow part 67 if necessary). The ports 63b and 63c are connected to the pipes constituting the top side branch portion 65 and the bottom side branch portion 66, respectively. Therefore, the expansion unit 3 can be switched to a state in which the main flow portion 67 and the top side branching portion 65 communicate with each other or a state in which the main flow portion 67 and the bottom side branching portion 66 communicate with each other by adjusting the three-way valve 63. it can.

  The heat exchanger 62 is a so-called liquid-liquid heat exchanger, and a main flow portion 67 of the hot water transport channel 60 is connected to the primary side. A heating forward flow path 70 and a heating return flow path 71 are connected to the secondary side of the heat exchanger 62, and pipe connection ports 70a and 71a are provided at the ends thereof. A heating secondary circulation pump 72 is provided in the middle of the heating return flow path 71. Therefore, if a pipe connected to a load terminal such as heating is connected, the heating secondary side circulation pump 72 is brought into an operating state, whereby a heat medium (liquid) such as hot water or antifreeze liquid between the heat exchanger 62 and the load terminal. It is possible to construct a circulation system that can circulate the gas.

  As shown in FIG. 1, the extension unit 3 includes pipe connection ports 52a and 53a provided at the ends of the second top side flow path 52 and the second bottom side flow path 53 described above, and tank connection on the basic unit 2 side. The pipe connection ports 18 a and 21 a provided at the ends of the flow path 18 and the bottom side connection flow path 21 are connected using the pipes 76 and 77, and the pipe connection provided at the end of the hot water transport flow path 60. By connecting the port 60 a and the pipe connection port 19 a provided at the end of the top-side connection flow path 19 on the basic unit 2 side using the pipe 75, it is possible to connect to the basic unit 2.

  The above-described storage heat source system 1 can perform operations such as a hot water supply operation or a renewal of hot water stored in a bathtub even with the basic unit 2 alone. It is possible to improve the hot water storage capacity and further expand the operation method. More specifically, the storage heat source system 1 has a main tank hot water storage operation, regardless of whether the extension unit 3 is connected to the basic unit 2 or the extension unit 3 is not connected. Main tank hot water supply operation and memorial operation can be performed. Further, the storage heat source system 1 is in a state in which the sub-tank hot water storage operation, the heating operation, and the sub-tank hot water supply operation can be performed by connecting the extension unit 3 to the basic unit 2 by piping. Hereinafter, each operation method will be described in detail with reference to the drawings.

(Main tank hot water storage operation)
The main tank hot water storage operation is an operation method for storing hot water heated to a predetermined temperature in the main tank 10 constituting the basic unit 2. When the storage heat source system 1 carries out the main tank hot water storage operation, the heat source 5 and the circulation pump 12 are put into an operating state. As a result, as shown by hatching and arrows in FIG. 2, hot water is extracted from the bottom 10 b side of the main tank 10 into the heating circulation channel 11, and a circulating flow of hot water returning to the top 10 a of the main tank 10 is generated.

  When the circulating flow of hot water as described above is generated, the hot water flowing through the heating circulation channel 11 is heat-exchanged and heated in the heat source 5 provided in the middle. The hot water heated by heat exchange passes through the heat source return channel 11b of the heating circulation channel 11, and is returned from the top 10a side at a flow rate that does not destroy the temperature stratification of the hot water formed in the main tank 10. .

  When the heat source 5 and the circulation pump 12 continue to operate, the hot water in the main tank 10 is gradually heated from the top 10a side and becomes high temperature. When it is confirmed that a predetermined amount or more of hot water or more in the main tank 10 is stored in the main tank 10 based on the detected temperatures of the temperature sensors 14a to 14e attached to the main tank 10, the heat source 5 and the circulation pump 12 The operation is stopped and the main tank hot water storage operation is completed.

  As described above, when the storage heat source system 1 performs the main tank hot water storage operation, the extension unit 3 is not involved in heating the hot water stored in the main tank 10. That is, the storage heat source system 1 can heat the hot water stored in the main tank 10 even in the absence of the extension unit 3. Therefore, the storage heat source system 1 is not only used when the extension unit 3 is connected by piping as shown in FIGS. 1 and 2, but also when the basic unit 2 is used alone without connecting the extension unit 3. By performing the same operation as described above, a hot water supply operation can be performed, and hot water can be stored in the main tank 10.

(Sub tank hot water storage operation)
The sub tank hot water storage operation is an operation for storing hot water heated to a predetermined temperature in the sub tank 50 constituting the extension unit 3, and is a characteristic operation method in the storage heat source system 1 of the present embodiment. In the sub-tank hot water storage operation, the hot water stored in the main tank 10 and the hot water existing in the sub tank 50 are replaced with the sub tank 50 by replacing the hot water stored in the main tank 10 in the main tank hot water operation described above with arrows and hatching in FIG. This is an operation to store hot water.

  More specifically, when the sub-tank hot water storage operation is performed, the ports 17b and 17c of the three-way valve 17 provided in the middle of the first top-side flow path 15 are communicated with each other on the basic unit 2 side to connect the tank. The port 17a to which the flow path 18 is connected is closed. On the extension unit 3 side, the ports 63a and 63c of the three-way valve 63 provided in the hot water transfer channel 60 are opened, and the port 63b is closed. Thereby, the main flow part 67 and the top side branch part 65 of the hot water conveyance flow path 60 are brought into a communication state.

  When the opening degree of the three-way valves 17 and 63 is adjusted as described above, the pump 61 provided in the main flow portion 67 of the hot water transport channel 60 is activated. Thereby, a circulating flow of hot water as indicated by an arrow in FIG. 3 is generated between the basic unit 2 and the subunit 3. More specifically, when the pump 61 is activated, hot water stored on the top 10 a side of the main tank 10 is led out via the first top-side flow path 15. The hot water led out from the main tank 10 flows into the hot water transport channel 60 via the top side connection channel 19 and the pipe 75 connected in the middle of the first top side channel 15. The hot water flowing through the hot water transfer channel 60 passes between the ports 63 a and 63 c of the three-way valve 63 and flows into the top side branching portion 65. That is, hot hot water taken out from the top 10 a side of the main tank 10 flows from the top 50 a side of the sub tank 50.

  As described above, when hot hot water flows into the top 50 a side of the sub tank 50, low temperature hot water existing on the bottom 50 b side of the storage tank 50 is led out through the second bottom side flow path 53. The low-temperature hot water flows through the pipe 77 connecting the pipe connection ports 21a and 53a and the bottom-side connection flow path 21 on the basic unit 2 side, and flows into the main tank 10 from the bottom 10b side.

  As described above, when the replacement of the hot hot water stored in the main tank 10 with the low temperature hot water stored in the sub tank 50 proceeds, the hot water in the main tank 10 will eventually disappear. That is, in the storage heat source system 1 of the present embodiment, when the sub tank hot water storage operation proceeds to some extent, the temperature detected by the temperature sensor 14a attached to the main tank 10 becomes lower than a predetermined temperature, and at the start of the sub tank hot water storage operation. The hot hot water existing in the main tank 10 is replaced with the low temperature hot water existing in the sub tank 50, and the hot water is stored on the top 50 a side of the sub tank 50. Therefore, when there is no hot water in the main tank 10, that is, when the temperature detected by the temperature sensor 14 a falls below a predetermined temperature, the hot water is stored in the sub tank 50, and the sub tank hot water is stored. Driving is complete.

  When the sub-tank hot water storage operation is completed as described above, the hot water existing in the main tank 10 disappears by the amount replaced with the low-temperature hot water in the sub tank 50. Therefore, when the sub-tank hot water storage operation is completed, or while the sub-tank hot water storage operation is being performed, the main tank hot-water storage operation is performed as described above as necessary, and is performed in the main tank 10 later. Hot water is replenished to the main tank 10 by an amount required in the main tank hot water supply operation or the memorial operation. In the case where the sub tank hot water storage operation and the main tank hot water storage operation are performed simultaneously, the flow rates of hot water circulating through the heating circulation passage 11 with the main tank hot water storage operation are the main tank 10 and the sub tank 50 with the sub tank hot water storage operation. The flow rate is smaller than the flow rate of hot water flowing between the two.

(Heating operation)
The heating operation is an operation for heating the liquid circulating between the load terminals (not shown) connected to the pipe connection ports 70a and 71a. The heating operation is performed by circulating high-temperature hot water stored in the subtank 50 as indicated by arrows and hatching in FIG. 4 after the above-described subtank hot water storage operation is performed.

  More specifically, when the storage heat source system 1 performs the heating operation, the ports 17a and 17b of the three-way valve 17 provided in the basic unit 2 are in communication with each other, and the port 17c is in a closed state. The Further, the ports 63a and 63b of the three-way valve 63 provided in the hot water transport channel 60 are in communication with each other, and the port 63c is in a closed state. That is, by adjusting the opening degree of the three-way valve 63, the flow path is switched so that the main flow part 67 of the hot water transport flow path 60 communicates with the bottom 50 b side of the sub tank 50 via the bottom side branching part 66.

  When the pump 61 provided in the middle of the hot water transport passage 60 is operated with the three-way valves 17 and 63 adjusted in opening degree as described above, the pump 61 is stored in the sub tank 50 as indicated by an arrow in FIG. Hot water is taken out from the top 50a side, and a circulating flow returning to the bottom side of the sub tank 50 is generated. That is, when the pump 61 is operated, hot water is taken out via the second top-side flow path 52 connected to the top 50a side of the sub tank 50, and the pipe 76 → tank connection flow path 18 → first top-side flow path. After flowing in the order of 15 → top side connection flow path 19 → pipe 75 → main flow part 67 of hot / cold water supply flow path 60 → bottom part side branch part 66, it flows into the bottom 50b side of the sub tank 50. Thereby, the hot hot water taken out from the sub tank 50 is sequentially supplied to the primary side of the heat exchanger 62 provided in the main flow portion 67 of the hot water transport channel 60.

  On the other hand, in parallel with the operation of the pump 61, the heating secondary circulation pump 72 provided in the heating return passage 71 is put into an operating state. As a result, a circulating flow of the heat medium occurs between the load terminal and the secondary side of the heat exchanger 62 as indicated by arrows in FIG.

  The heat medium supplied from the load terminal to the secondary side of the heat exchanger 62 along with the operation of the heating secondary circulation pump 72 exchanges heat with high-temperature hot water flowing through the main flow portion 67 of the hot water transport channel 60. And then supplied to the load terminal via the heating forward flow path 70.

(Main tank hot water operation)
The main tank hot water supply operation is an operation for supplying hot hot water stored in the main tank 10 provided in the basic unit 2 to a currant or the like connected to the pipe connection port 15a. When the main tank hot water supply operation is performed, the ports 17b and 17c of the three-way valve 17 are opened, and the port 17a is closed. Further, the three-way valve 63 provided in the extension unit 3 is closed. Thereby, the hot water flowing through the first top-side flow path 15 does not flow to the extension unit 3 side via the tank connection flow path 18 and the top-side connection flow path 19.

  When hot water is supplied from a water supply source connected to the pipe connection port 16 a in a state where the opening of the three-way valves 17 and 63 is adjusted as described above, the hot water is supplied via the first bottom side flow path 16. It flows into the main tank 10 from the bottom 10b side. Accordingly, hot hot water stored on the top 10a side of the main tank 10 is taken out from the main tank 10 via the first top-side flow path 15 and supplied to a currant or the like connected to the pipe connection port 15a. Is done.

(Sub tank hot water operation)
In the sub tank hot water supply operation, hot water stored in the sub tank 50 provided on the extension unit 3 side is taken out via the second top side flow path 52 and the first top side flow path 15 and connected to the pipe connection port 15a. This is the operation to supply to the curan etc. More specifically, when the sub-tank hot water supply operation is performed, the ports 17a and 17b of the three-way valve 17 are opened and the port 17c is closed, and hot water in the main tank 10 is supplied from the top 10a side. It cannot be derived. Further, the ports 63a to 63c of the three-way valve 63 provided in the extension unit 3 are closed. As a result, hot water flowing through the first top channel 15 flows into the extension unit 3 via the hot water transport channel 60 and the top connection channel 19, and the hot water stored in the sub tank 50 flows into the top 50a. Outflow is prevented through the piping constituting the top branching portion 65 connected to the side. That is, when the three-way valve 63 is closed, the hot water cannot flow into or out of the sub tank 50 via the hot water transfer channel 60.

  When hot water is supplied from the water supply source connected to the pipe connection port 16a in the state where the opening degree of the three-way valves 17 and 63 is adjusted as described above, the hot water is connected to the first bottom side channel 16 to this. After flowing into the bottom-side connection flow path 21, it flows into the sub tank 50 from the bottom 50 b side through the pipe 77 and the second bottom-side flow path 53. When hot water flows from the bottom 50 b side of the sub tank 50, hot water stored in the sub tank 50 is pushed upward by the hot water and led out through the second top side flow path 52. And this hot hot water flows into the 1st top side flow path 15 via the piping 76 and the tank connection flow path 18, and is supplied to currant etc. via the piping connected to the piping connection port 15a.

(Memorial operation)
The memorial operation is an operation of heating hot water stored in a bathtub (not shown) piped to pipe connection ports 28a and 29a provided at the ends of the bath going-out flow path 28 and the bath return flow path 29. It is. When performing the tracking operation, the tracking primary-side circulation pump 26 and the tracking secondary-side circulation pump 30 are put into an operating state. When the bath primary side circulation pump 26 is activated, hot water stored in the main tank 10 flows out from the top 10a side of the main tank 10 to the bath circulation channel 13 and forms a circulation flow returning to the bottom 10b side. The hot water flowing through the bath circulation passage 13 passes through the primary side of the bath heat exchanger 27 provided in the middle.

  On the other hand, when the bath secondary-side circulation pump 30 is activated, hot water in the bathtub is supplied to the secondary side of the bath heat exchanger 27 via the bath return channel 29. The hot water flowing into the secondary side of the bath heat exchanger 27 is heated by heat exchange with hot hot water supplied to the primary side via the bath circulation channel 13, and then passes through the bath going channel 28. It is returned to the bathtub side.

  As described above, the storage heat source system 1 according to the present embodiment is configured so that the tank connection flow path 18 and the top connection flow path 19 branched from the first top flow path 15 of the basic unit 2 2 The top side channel 52 and the hot water transport channel 60 are connected, and the second bottom side channel 53 of the extension unit 3 is connected to the bottom side connection channel 21 branched from the first bottom side channel 16 of the basic unit 2. It can be constructed simply by connecting. That is, the storage heat source system 1 can be constructed by simply connecting the basic unit 2 and the extension unit 3 by piping 75 to 77, and it is necessary to connect the extension unit 3 directly to the heat source 5 by piping. Absent. Therefore, the storage heat source system 1 has few places to be connected to the piping when the extension unit 3 is added, and the extension unit 3 can be easily added. In addition, since the storage heat source system 1 requires a small number of pipes when the expansion unit 3 is added, there are few places to dissipate heat along with the movement of hot water, and the amount of heat energy released is small.

  The storage heat source system 1 of the present embodiment adjusts the three-way valve 63 provided in the hot water transport channel 60 to adjust the main flow of the top side connection channel 19 of the basic unit 2 and the hot water transport channel 60 of the extension unit 3. By bringing the pump 61 into an operating state with the portion 67 in a conductive state, a part or all of hot water stored in the state heated by the main tank 10 is taken out from the top 10a side of the main tank 10 and the sub tank 50 is removed. In addition to being introduced from the top 50 a side, part or all of the low-temperature hot water existing in the sub tank 50 can be taken out from the bottom 50 b side and introduced to the bottom 10 b side of the main tank 10. That is, the storage heat source system 1 can store hot hot water in the sub tank 50 by replacing hot water between the main tank 10 and the sub tank 50.

  In the storage-type heat source system 1 of the present embodiment, the main tank storage operation is performed, and the hot water for storing in the main tank 10 in the sub tank 50 is stored in an amount higher than the amount to be stored. Is implemented. Therefore, the storage heat source system 1 uses the flow rate and flow rate of hot water flowing between the main tank 10 and the sub tank 50 when the sub tank hot water storage operation is performed, and the hot water that circulates through the heating circulation channel 11 during the main tank storage operation. The flow rate and flow rate can be larger. Therefore, the storage heat source system 1 generates energy loss due to heat dissipation due to the movement of hot hot water from the main tank 10 to the sub tank 50 and energy loss due to the presence of a small amount of hot hot water in the sub tank 50. Hard to do.

  In the storage type heat source system 1, when replacing the entire amount of hot water stored in the main tank 10 and the sub tank 50 at the time of the sub tank hot water storage operation, the flow rate of the hot water flowing between the main tank 10 and the sub tank 50 is changed. As the flow rate increases, the energy loss as described above can be suppressed to a minimum. However, when replacing a part of hot water stored in the main tank 10 or the sub tank 50, from the viewpoint of energy loss, the flow rate of hot water In some cases, it may be preferable to suppress the flow rate to such an extent that the temperature stratification formed by the hot water stored in the main tank 10 or the sub tank 50 is not destroyed. That is, when the flow rate and flow rate of hot water at the time of sub-tank hot water storage operation are extremely large, and hot and cold hot water are mixed and the above-mentioned temperature stratification is disrupted, the hot water operation and heating operation may cause curan and heat. To supply the exchanger 62, the temperature becomes low, and a large amount of hot water having a low use value is generated. Therefore, when such a situation is concerned, it is desirable to make the flow rate and flow rate of the hot water flowing between the main tank 10 and the sub tank 50 as large as possible within a range not to destroy the temperature stratification.

  As described above, the storage heat source system 1 of the present embodiment can introduce hot hot water taken out from the top 10a side of the main tank 10 from the top 50a side of the sub tank 50 when the sub tank storage operation is performed. Further, when the sub tank storage operation is performed, the low-temperature hot water existing in the sub tank 50 is taken out from the bottom 50 b side and introduced into the bottom 10 b side of the main tank 10. For this reason, in the storage heat source system 1 of the present embodiment, even if hot water is replaced between the main tank 10 and the sub tank 50, the temperature stratification formed in the main tank 10 and the sub tank 50 is unlikely to collapse. Further, in the storage heat source system 1, the temperature of the hot water stored in the tanks 10 and 50 is not suitable for heating the hot water supply or the heating heat medium because the hot and cold hot water is mixed. It is also unlikely that the value of use will be low. Accordingly, in the storage heat source system 1, energy loss occurs due to collapse of temperature stratification in the main tank 10 and the sub tank 50, and the hot water stored in each of the tanks 10 and 50 is in a state of low use value. The possibility that a trouble occurs will be minimized.

  In the present embodiment, the top-side connection flow path 19 is connected in the middle of the first top-side flow path 15, and is in the middle of the first top-side flow path 15, and the top-side connection flow path 19 and the first top portion. A tank connection flow path 18 is connected via a three-way valve 17 between a connection portion A with the side flow path 15, a first top-side flow path 15, and a connection portion C with the main tank 10. In other words, the three-way valve 17 is provided between the connection portion A and the connection portion C, and can be used to prevent the hot water from flowing into and out of the main tank 10. Further, in the present embodiment, the second top side flow path 52 is connected to the tank connection flow path 18 by piping. Therefore, by closing the port 17c of the three-way valve 17 so that the ports 17a and 17b communicate with each other, not only hot water in the main tank 10 but also hot water in the sub tank 50 can be used for hot water supply.

  In the said embodiment, although the structure which connected the 2nd top side flow path 52 with respect to the 1st top side flow path 15 via the tank connection flow path 18 and the piping 76 was illustrated, this invention is limited to this. Instead of this, a configuration may be adopted in which a pipe connection port is provided at the end of the second top-side flow path 52 so as not to be connected to the first top-side flow path 15. In such a configuration, hot water stored in the sub tank 50 can be supplied (hot water supply) to the currant or the like by connecting the currant or the like to the pipe connection port at the end of the second top-side flow path 52. It becomes.

  In the present embodiment, the three-way valve 17 can control both the inflow and outflow of hot water into and out of the main tank 10 and the inflow and outflow of hot water into and from the sub tank 50. However, the present invention is not limited to this. That is, for example, a valve for controlling the inflow / outflow of hot water in the main tank 10 and a valve for controlling the inflow / outflow of hot water in the sub tank 50 may be provided separately.

  More specifically, the valve for controlling the inflow and outflow of hot water in the main tank 10 is, for example, a connection portion D (a position where the three-way valve 17 is provided) between the first top-side flow path 15 and the tank connection flow path 18. ) And the connection portion C between the first top-side flow path 15 and the main tank 10 or in the middle of the first bottom-side flow path 16 between the connection portion B and the bottom 10b of the main tank 10. It may be provided between them. Further, a valve for controlling the inflow and outflow of hot water in the sub tank 50 may be provided in the middle of the tank connection channel 18, the second top side channel 52, the pipe 76, and the like.

  Similarly, in the extension unit 3, the configuration in which the three-way valve 63 is provided at the branch portion between the main flow portion 67, the top-side branch portion 65, and the bottom-side branch portion 66 is illustrated, but the present invention is not limited to this. Absent. More specifically, the extension unit 3 may have a configuration in which an opening / closing valve or the like is provided in the middle of the top side branch portion 65 and the bottom side branch portion 66 instead of providing the three-way valve 63.

  In the present embodiment, a sub-tank hot water storage operation, a sub-tank hot water operation using hot water stored in the sub tank 50, and a heating operation can be performed using the pump 61 provided on the extension unit 3 side. It can be configured. In other words, the storage heat source system 1 does not need to use the pump 61 in the main tank hot water storage operation, the main tank hot water supply operation, and the memorial operation that can be performed only by the basic unit 2. In this embodiment, since the pump 61 is provided on the side of the extension unit 3, the pump 61 is added by adding the extension unit 3 to the basic unit 2. Therefore, according to the configuration described above, it is not necessary to provide the pump 61 in the basic unit 2 in anticipation that the extension unit 3 is connected, and the configuration of the basic unit 2 can be simplified correspondingly.

  In the above embodiment, since the pump 61 is provided in the main stream portion 67 of the hot water transport passage 60, the pump 61 is used not only for pumping hot water during the sub-tank hot water storage operation but also for pumping hot water during the heating operation. Therefore, the configuration of the extension unit 3 is simple. The extension unit 3 is not limited to the configuration in which the pump 61 is provided in the main flow portion 67 of the hot water transport channel 60. More specifically, the extension unit 3 may have a configuration in which a pump is provided in the top side branching section 65 and the bottom side branching section 66 of the hot water transport channel 60 instead of providing the pump 61. In the case of such a configuration, the number of pumps increases as compared with the case where the pump 61 is provided in the main flow section 67, but the subtank hot water storage operation and the heating operation can be performed as in the case of the above configuration.

  The storage heat source system 1 of the present embodiment has a configuration in which the basic unit 2 and the heat source 5 are separately provided, but the present invention is not limited to this and is incorporated in the basic unit 2. It may be a configuration. Moreover, although the example which employ | adopted the heat pump unit as the heat source 5 was illustrated in the said embodiment, this invention is not limited to this, Adopting appropriate heat sources, such as a conventionally well-known fuel cell, a gas engine, etc. Can do.

  In the above embodiment, the capacity of the main tank 10 and the capacity of the sub tank 50 are substantially the same, but the present invention is not limited to this, and the capacity of the main tank 10 and the capacity of the sub tank 50 are different. It may be.

(Second Embodiment)
Next , the storage heat source system 80 according to the invention related to the present invention will be described in detail with reference to the drawings. The storage heat source system 80 has the same configuration as that of the storage heat source system 1 of the first embodiment. Therefore, common parts are denoted by the same reference numerals, and detailed description thereof is omitted. .

  The storage heat source system 80 has the same configuration in that the basic unit 2 and the extension unit 3 are connected by piping in the same manner as the storage heat source system 1 described above. The piping configuration inside is partially different. More specifically, in the above embodiment, the basic unit 2 has the three-way valve 17 in the middle of the first top-side flow path 15 connected to the top 10a of the main tank 10, and the tank connection flow is provided therethrough. The path 18 was connected, and a pipe connection port 18a was provided at this end. However, the basic unit 2 employed in this embodiment is not provided with the three-way valve 17 or the tank connection channel 18, and only the top side connection channel 19 is connected to the middle of the first top side channel 15. It is set as the structure.

  Moreover, in the said 1st Embodiment, it was the structure which provided the piping connection port 52a in the terminal of the 2nd top part side flow path 52 connected to the top part 50a of the sub tank 50 in the expansion unit 3. FIG. However, in the extension unit 3 employed in the present embodiment, the second top side flow path 52 is connected to the middle of the main flow part 67 of the hot water transport flow path 60 via the three-way valve 81 (flow path adjusting means). Yes. That is, among the three ports 81a to 81c constituting the three-way valve 81, the pipes constituting the main flow portion 67 are connected to the ports 81a and 81b, and the second top side flow path 52 is connected to the port 81c. ing.

  The storage heat source system 80 of the present embodiment connects the pipe connection ports 19a and 60a provided at the ends of the top side connection channel 19 and the hot water transport channel 60 with a pipe 75, and also connects the bottom side connection channel. 21 and the pipe connection ports 21 a and 53 a provided at the ends of the second bottom side flow path 53 are connected by a pipe 77. For this reason, the storage heat source system 80 requires fewer pipes to connect the basic unit 2 and the extension unit 3 by the amount of the pipe 76 used in the storage heat source system 1.

  Next, the operation of the storage heat source system 80 of the present embodiment will be described in detail with reference to the drawings. The storage heat source system 80 can perform main tank hot water storage operation, sub tank hot water storage operation, sub tank heating operation, main tank heating operation, hot water supply operation, and memorial operation. Hereinafter, the operation of the storage heat source system 80 will be described for each operation method.

(Main tank hot water storage operation)
The main tank hot water storage operation is performed in substantially the same manner as the main tank hot water storage operation in the storage heat source system 1 described above. That is, when the main tank hot water storage operation is performed, the three-way valve 81 provided in the extension unit 3 is closed, and the heat source 5 and the circulation pump 12 are activated in this state. As a result, as indicated by arrows and hatching in FIG. 9, hot water stored in the main tank 10 is taken out from the bottom 10 b side through the heat source forward flow path 11 a of the heating circulation flow path 11. The hot water taken out from the bottom 10b side is heated in the heat source 5 and returned to the main tank 10 from the top 10a via the heat source return flow path 11b. After heating of the hot water in the main tank 10 is started in this way, when it is confirmed by the temperature sensors 14a to 14e that a predetermined amount of hot water at a predetermined temperature or more is stored in the main tank 10, The heat source 5 and the circulation pump 12 are stopped, and the main tank hot water storage operation is completed.

(Sub tank hot water storage operation)
The sub-tank hot water storage operation is an operation method for storing hot hot water in the sub tank 50 by replacing the hot water stored in the main tank 10 with the low temperature hot water stored in the sub tank 50 in the main tank hot water operation described above. It is. When the storage heat source system 80 performs the sub-tank hot water storage operation, the ports 81a and 81b of the three-way valve 81 are first opened and the port 81c is closed. Further, the ports 63a and 63c of the three-way valve 63 are opened, and the port 63b is closed. That is, by adjusting the opening degree of the three-way valve 63, the hot water flowing through the main flow portion 67 of the hot water transport channel 60 can be introduced into the sub tank 50 from the top 50a side via the top side branching portion 65, and on the bottom 50b side. The flow path is switched so that it cannot flow in.

  When the opening of the three-way valves 63 and 81 is adjusted as described above, the pump 61 is put into an operating state. Thereby, as indicated by hatching or an arrow in FIG. 10, hot hot water stored in the main tank 10 is taken out from the top 10 a side through the first top-side flow path 15. Thereafter, the hot water taken out from the main tank 10 flows in the order of the top side connection flow path 19 → the piping 75 → the main flow part 67 of the hot water transfer flow path 60 → the top side branching part 65, and enters the sub tank 50 from the top 50 a side. Inflow.

  When hot hot water flows in from the top 50 a side of the sub tank 50, low temperature hot water existing in the sub tank 50 flows out from the bottom 50 b side through the second bottom side flow path 53. And this low temperature hot water flows into the main tank 10 from the bottom 10b side, after flowing through the piping 77 and the bottom side connection flow path 21. While the replacement of the hot hot water stored in the main tank 10 with the low temperature hot water stored in the sub tank 50 proceeds in this manner, the temperature sensors 14a to 14e are present in the main tank 10. When it is confirmed that the remaining amount of hot hot water is less than a predetermined amount, or the hot water exceeding the predetermined amount is present in the sub tank 50 by the temperature sensors 51a to 51e, the pump 61 is stopped. The sub-tank hot water storage operation is completed.

  When the sub-tank hot water storage operation is completed as described above, the hot water existing in the main tank 10 is reduced by the amount removed by the replacement with the low-temperature hot water in the sub tank 50. Therefore, when the sub-tank hot water storage operation is completed, or while the sub-tank hot water storage operation is being performed, the main tank hot water storage operation is appropriately performed, which is necessary in the hot water supply operation and the memorial operation performed later in the main tank 10. The main tank 10 is replenished with hot water as much as possible. In the case where the sub tank hot water storage operation and the main tank hot water storage operation are performed simultaneously, the flow rates of hot water circulating through the heating circulation passage 11 with the main tank hot water storage operation are the main tank 10 and the sub tank 50 with the sub tank hot water storage operation. The flow rate is smaller than the flow rate of hot water flowing between the two.

(Sub tank heating operation)
In the subtank heating operation, hot water stored in the subtank 50 by the above-described subtank hot water storage operation is used to heat the heat medium circulating between the heat exchanger 62 and the load terminals connected to the pipe connection ports 70a and 71a. Driving. When the sub-tank heating operation is performed, first, the ports 81b and 81c of the three-way valve 81 provided in the hot water transport passage 60 are opened. Thereby, the flow path constituting the extension unit 3 is made independent from the flow path constituting the basic unit 2.

  Further, when the subtank heating operation is performed, the ports 63a and 63b of the three-way valve 63 are opened and the port 63c is closed. That is, by adjusting the opening degree of the three-way valve 63, hot water flowing through the main flow portion 67 of the hot water transport channel 60 can be introduced into the sub tank 50 from the bottom 50b side via the bottom side branching portion 66, and on the top 50a side. The flow path is switched so that it cannot flow in.

  When the opening degree of the three-way valves 63 and 81 is adjusted as described above, the pump 61 and the heating secondary circulation pump 72 are put into an operating state. As a result, hot water circulates between the sub tank 50 and the primary side of the heat exchanger 62 as indicated by hatching or arrows in FIG. 11, and a heat medium is transferred between the load terminal and the secondary side of the heat exchanger 62. Circulate. That is, when the pump 61 is activated, hot hot water stored in the sub-tank 50 is taken out from the top 50 a side via the second top side flow path 52, and flows through the hot water transport flow path 60 via the three-way valve 81. It flows into the part 67. The hot hot water flowing through the main flow portion 67 flows through the primary side of the heat exchanger 62 and dissipates heat, and then passes through the three-way valve 63 and the bottom side branching portion 66 and flows into the sub tank 50 from the bottom 50b side.

  As described above, when the pump 61 is operated and hot water is circulated with the heat exchanger 62, hot hot water existing on the top 50a side of the sub tank 50 is sequentially supplied to the primary side of the heat exchanger 62, The heat medium supplied to the secondary side of the heat exchanger 62 via the heating return flow path 71 is subjected to heat exchange heating. The heat medium heated in the heat exchanger 62 is supplied to the load terminal via the heating forward flow path 70.

(Main tank heating operation)
The main tank heating operation is supplied from the load terminal to the secondary side of the heat exchanger 62 by supplying hot water stored in the main tank 10 to the primary side of the heat exchanger 62 by the main tank hot water storage operation. This operation method heats the heat medium. The main tank heating operation is an operation method used for heating a heat medium that supplies hot water stored in the main tank 10 in preparation for hot water supply operation or memorial operation to a load terminal. Therefore, in the storage heat source system 80, hot water with a temperature suitable for heating the heat medium supplied to the load terminal is not stored in the sub tank 50, or the amount of high temperature hot water stored in the sub tank 50 is used as the heat medium. The main tank is heated when the heating medium to be supplied to the load terminal has to be heated although the heating is small.

  Also in the case where the main tank heating operation is performed, the opening degree of the three-way valves 63 and 81 is first adjusted. More specifically, when the main tank heating operation is performed, the ports 81a and 81b of the three-way valve 81 are opened and the port 81c is closed. Thereby, the hot water flowing into the main flow portion 67 of the hot water transport channel 60 from the basic unit 2 side can flow into the heat exchanger 62 side, and the second top side flow in which the hot water in the sub tank 50 is connected to the top portion 50a. It will be in the state which cannot flow out to the main flow part 67 side via the path | route 52. FIG.

  In the three-way valve 63, the ports 63a and 63b are opened, and the port 63c is closed. As a result, the hot water that has flowed through the main flow portion 67 of the hot water transport passage 60 and radiated heat in the heat exchanger 62 to a low temperature cannot flow into the top 50 a side of the sub tank 50.

  When the opening degree of the three-way valves 63 and 81 is adjusted as described above, the pump 61 is activated. As a result, as shown by arrows and hatching in FIG. 12, hot water extracted from the top 10a side of the main tank 10 flows through the primary side of the heat exchanger 62, and a circulating flow returning to the bottom 10b side is formed. More specifically, when the pump 61 is actuated, hot hot water stored in the main tank 10 is taken out via the first top-side flow path 15, and the top-side connection flow path 19 → pipe 75 → hot water conveyance. It flows in the order of the main flow portion 67 → the bottom side branching portion 66 of the flow path 60 and flows into the bottom 50 b side of the sub tank 50. At this time, it is assumed that the hot water flowing into the bottom 50b side of the sub tank 50 dissipates heat in the heat exchanger 62 when passing through the main flow portion 67 and is at a low temperature.

  When hot water flows into the bottom 50b side of the sub tank 50, the flowing hot water or low-temperature hot water existing on the bottom 50b side is taken out from the sub tank 50 via the second bottom side flow path 53 connected to the bottom 50b. .

  Here, as described above, the main tank heating operation is performed when there is not enough hot water in the sub tank 50. In addition, the storage heat source system 80 is configured to store hot water extracted from the main tank 10 from the top 50 a side of the sub tank 50 and stored in the sub tank 50 when the sub tank hot water storage operation is performed. Therefore, even if high-temperature hot water remains in the sub-tank 50, it is assumed that the high-temperature hot water exists on the top 50a side and hardly exists on the bottom 50b side. Therefore, when the main tank heating operation is performed, the hot water existing on the bottom 50b side of the sub tank 50 is taken out from the main tank 10 and dissipated in the heat exchanger 62 to flow into the bottom 50b side of the sub tank 50. Similarly, the temperature is low, and it is assumed that there is no inconvenience such as a thermal loss or a temperature stratification formed in the sub-tank 50 even if the sub-tank 50 is taken out.

  The low-temperature hot water taken out from the bottom 50b side of the sub tank 50 as described above is returned to the bottom 10b side of the main tank 10 via the piping 77 and the bottom side connection flow path 21.

  On the other hand, the heat medium supplied from the load terminal side to the secondary side of the heat exchanger 62 via the heating return flow path 71 with the operation of the heating secondary circulation pump 72 is a high temperature flowing through the hot water transport flow path 60. It is heated by heat exchange with hot water. The heat medium heated in the heat exchanger 62 is returned to the load terminal side via the heating forward flow path 70.

(Hot water operation)
The hot water supply operation is performed in the same manner as the main tank hot water supply operation in the storage heat source system 1 described above. That is, when the hot water supply operation is performed, the three-way valves 63 and 81 are closed. In this state, when a curan or the like connected to the pipe connection port 15a is opened, low temperature hot water is supplied from an external water supply source connected to the pipe connection port 16a as shown by arrows or hatching in FIG. It flows into the tank 10 from the bottom 10b side. Along with this, hot hot water existing on the top 10a side of the main tank 10 flows out through the first top-side flow path 15 and is supplied to the currant or the like.

(Memorial operation)
The memorial operation is also carried out using hot water stored in the main tank 10 as in the case of the storage heat source device 1 described above. That is, when carrying out the chasing operation, the chasing primary side circulation pump 26 and the chasing secondary side circulation pump 30 are put into an operating state. As a result, as shown by arrows and hatching in FIG. 14, the hot water stored in the main tank 10 flows out from the top 10a side of the main tank 10 to the bath circulation channel 13 and returns to the bottom 10b side. At the same time, hot water in the bathtub circulates through the bath going-out channel 28 and the bath return channel 29. Thereby, the hot and cold water in the bathtub is heated by heat exchange with the hot hot water flowing in the bath circulation passage 13 in the bath heat exchanger 27.

  As described above, the storage heat source system 80 of the present embodiment can be constructed by simply connecting the basic unit 2 and the extension unit 3 with the two pipes 75 and 77, and the extension unit 3 can be used as the heat source 5. There is no need to connect the pipe directly. Further, the storage heat source system 80 has fewer parts to be connected to the piping when the expansion unit 3 is added than the storage heat source system 1 described above, and the expansion unit 3 can be expanded more easily by that amount. Furthermore, since the storage-type heat source system 80 requires only two pipes when the expansion unit 3 is added, there are few places to dissipate heat as the hot water moves, and the amount of heat energy released is small.

  Also in the storage heat source system 80 of the present embodiment, the three-way valve 63 is adjusted in the same manner as in the storage heat source system 1 described above, so that the top portions 10a and 50a and the bottom portions 10b and 50b of the main tank 10 and the sub tank 50 communicate with each other. In this state, by operating the pump 61, replacement of hot water (sub tank hot water storage operation) can be performed between the main tank 10 and the sub tank 50.

  Further, the storage heat source system 80 of the present embodiment performs the sub-tank hot water storage operation in a state where hot water heated to a temperature desired to be stored in the sub-tank 50 in the main tank 10 is ensured more than an amount desired to be stored in the sub-tank 50. It is configured. Therefore, there is a low possibility that a large amount of low-temperature hot water and a small amount of high-temperature hot water are mixed in the sub-tank 50, and the energy loss during the sub-tank hot-water storage operation is reduced accordingly.

  Furthermore, similarly to the storage heat source system 1, the storage heat source system 80 has a flow rate and flow rate of hot water flowing between the main tank 10 and the sub tank 50 when the sub tank hot water storage operation is performed. The flow rate and flow rate of hot water flowing through the heating circulation channel 11 are larger. Therefore, the storage heat source system 80 according to the present embodiment has an energy loss due to a mixture of a large amount of low-temperature hot water and a small amount of high-temperature hot water in the sub tank 50, or when hot water flows between the main tank 10 and the sub tank 50. Energy loss due to heat dissipation can be minimized.

  In the storage-type heat source system 80, the flow rate and flow rate of hot water flowing between the main tank 10 and the sub tank 50 during the sub tank hot water storage operation are affected by the temperature stratification formed in the tanks 10 and 50 from the viewpoint of energy loss. It is desirable to make it large within the range.

  The storage heat source system 80 introduces hot hot water taken out from the top 10 a side of the main tank 10 into the sub tank 50 from the top 50 a side when the sub tank storage operation is performed, and the low temperature existing on the bottom 50 b side of the sub tank 50. Hot water is taken out from the bottom 50b side and introduced into the main tank 10 from the bottom 10b side. Therefore, in the storage heat source system 80, temperature stratification is formed or maintained in the main tank 10 and the sub tank 50 when the sub tank storage operation is performed. Therefore, in the storage heat source system 80 of the present embodiment, there is a possibility that energy loss occurs due to the mixing of hot and cold hot water and a large amount of hot water with a halfway temperature with low use value. Very low.

  In the present embodiment, the second top side flow path 52 is connected to the main flow part 67 of the hot water transport flow path 60 via the three-way valve 81, and the pump 61 is provided in the main flow part 67. Therefore, the storage heat source system 80 circulates hot water in the extension unit 3 by adjusting the opening of the three-way valve 81 so that the ports 81b and 81c are conductive when the subtank heating operation is performed. The hot water stored in can be supplied to the primary side of the heat exchanger 62. That is, in this embodiment, the hot water stored in the subtank 50 is once taken out from the extension unit 3 or the basic unit 2 and the extension unit as in the case where the subtank heating operation is performed in the storage heat source system 1 described above. 3 is supplied to the heat exchanger 62 without passing through the pipes 75 and 76 connecting the 3 and the inside of the basic unit 2. Therefore, in the storage heat source system 80 of the present embodiment, the length of the path from the sub tank 50 to the heat exchanger 62 is short when the sub tank heating operation is performed, and the energy loss is correspondingly small.

  In the present embodiment, a heat exchanger 62 is provided in the main flow portion 67 of the hot water transport channel 60. That is, even when hot water is taken out from the top 50a side of the sub tank 50 or when hot water is taken out from the top 10a side of the main tank 10, the hot water taken out from the tanks 10 and 50 passes through. A heat exchanger 62 is provided. Therefore, the storage heat source system 80 of the present embodiment includes a sub-tank heating operation that supplies hot water extracted from the sub tank 50 to the heat exchanger 62, and a main tank heating that supplies hot water extracted from the main tank 10 to the heat exchanger 62. Both driving can be carried out.

  In the present embodiment, the configuration in which the heat exchanger 62 is disposed in the main flow portion 67 of the hot water transport channel 60 is illustrated from the above viewpoint, but the present invention is not limited to this, and for example, the hot water transport flow The heat exchanger 62 may be arranged in the top side branching portion 65 or the bottom side branching portion 66 of the path 60. When the heat exchanger 62 is arranged in the top branch 65, the subtank heating operation cannot be performed, but the heat energy can be supplied to the heat exchanger 62 in any configuration.

  In the present embodiment, the three-way valve 81 can control the outflow of hot water from the sub tank 50 and the control of the hot water flow in the main flow portion 67 of the hot water transport passage 60. It is not limited. More specifically, the extension unit 3 may have a configuration in which an open / close valve or the like is provided in each of the second top portion side channel 52 and the main flow portion 67 of the hot water transport channel 60. Similarly, the extension unit 3 is provided in the middle of the top branch 65 and the bottom branch 66 instead of providing the three-way valve 63 at the branch between the main stream 60 and the top branch 65 and the bottom branch 66. Each may be provided with an on-off valve or the like.

  The storage heat source system 80 can perform a sub tank hot water storage operation, a main tank heating operation, and a sub tank heating operation using a pump 61 provided on the extension unit 3 side. That is, in the storage heat source system 80, since the pump 61 is provided on the extension unit 3 side, the pump 61 is also added by adding the extension unit 3 to the basic unit 2. Therefore, according to the configuration described above, it is not necessary to provide the pump 61 in the basic unit 2 in anticipation that the extension unit 3 is connected, and the configuration of the basic unit 2 can be simplified correspondingly.

  In the present embodiment, the first top-side flow path 15 and the first bottom-side flow path 16 of the basic unit 2 are not provided with a valve capable of preventing the flow of hot water into and out of the main tank 10, and the storage of the above-described embodiment. Unlike the mold heat source system 1, the hot water in the sub tank 50 is not used for hot water supply. Therefore, in the storage heat source system 80, the hot water in the sub tank 50 can be used exclusively for heating operation. Therefore, the storage heat source system 80 can secure sufficient hot water for use in the heating operation.

  Note that the storage heat source system 80 of the present embodiment also has a configuration in which a valve capable of preventing inflow and outflow of hot water into and from the main tank 10 is provided in the first top side flow path 15 and the first bottom side flow path 16. The hot water in the sub tank 50 can be supplied for hot water supply. That is, if the valve is provided between the connection parts A and C of the first top-side flow path 15 or between the connection part B of the first bottom-side flow path 16 and the bottom 50b of the sub tank 50, this valve By supplying low-temperature hot water from an external water supply source in a closed state, low-temperature hot water can be introduced into the sub tank 50 from the bottom 50b side, and hot water existing on the top 50a side can be taken out from the sub tank 50. According to such a configuration, the sub-tank hot water supply operation can also be performed for the storage heat source system 80.

(Third embodiment)
Subsequently, the storage-type heat source system 100 according to the present onset bright, be described in detail with reference to the drawings. Since the storage heat source system 100 has the same configuration as the storage heat source systems 1 and 80 of the first and second embodiments, common portions are denoted by the same reference numerals, and detailed description will be given. Is omitted.

  The storage heat source device 100 has a flow path configuration that combines the storage heat source systems 1 and 80 described above. More specifically, the basic unit 2 employed in the storage heat source system 100 of the present embodiment has the same flow path configuration as that employed in the storage heat source system 1 of the first embodiment. . That is, the first top-side flow path 15 connected to the top 10 a of the main tank 10 constituting the basic unit 2 is branched into the tank connection flow path 18 and the top-side connection flow path 19 in the middle thereof. A three-way valve 17 is arranged in the middle of the first top-side flow path 15 and at a branch portion with the tank connection flow path 18. Further, the top-side connection flow path 19 is connected to a position downstream of the three-way valve 17 in the flow direction of the hot water flowing out from the top 10 a of the main tank 10.

  The expansion unit 3 employed in the storage heat source device 100 is also configured to have a flow path configuration that combines those employed in the storage heat source systems 1 and 80 of the first and second embodiments. More specifically, the extension unit 3 employed in the storage heat source device 100 is provided with a three-way valve 81 in the main stream portion 67 of the hot water transport channel 60 in the same manner as that employed in the storage heat source system 80. Have.

  Further, in the expansion unit 3 employed in the storage heat source device 100, the second top-side flow path 52 is connected to the top 50 a of the sub tank 50 in the same manner as that employed in the storage heat source system 1. , And a pipe connection port 52a at the end portion. In the present embodiment, the second top side flow path 52 is branched in the middle, and the flow path of the branch portion (hereinafter referred to as the second top side branch flow path 52b) is connected to the port 81c of the three-way valve 81. ing. That is, the top portion 50a side of the sub tank 50 and the main flow portion 67 of the hot water transport channel 60 are connected via a three-way valve 81. Except for this point, the extension unit 3 employed in the storage heat source apparatus 100 The configuration is almost the same as that employed in the storage heat source system 1.

  Subsequently, the operation of the storage heat source system 100 of the present embodiment will be described in detail with reference to the drawings. The storage heat source system 1 of the first embodiment performs a main tank heating operation for heating the heat medium supplied to the load terminal using the hot water in the main tank 10 like the storage heat source system 80 of the second embodiment. It was a configuration that could not be implemented. Further, the storage heat source system 80 has a configuration in which the sub tank hot water supply operation for supplying hot water in the sub tank 50 for hot water supply cannot be performed unlike the storage heat source system 1. However, the storage heat source system 100 of the present embodiment is configured to perform both of these operations. In other words, the storage heat source system 100 has a main tank heating operation and a sub tank heating operation in addition to the operation methods such as the main tank hot water storage operation, the sub tank hot water storage operation, and the memorial operation that can be performed in both the storage heat source systems 1 and 80. The main tank hot water supply operation and the sub tank hot water supply operation can be performed. Hereinafter, the operation of the storage heat source system 100 when operating by each operation method will be described in detail with reference to the drawings.

(Main tank hot water storage operation)
The main tank hot water storage operation in the storage heat source system 100 is performed in the same manner as the storage heat source devices 1 and 80 described above. That is, the main tank hot water storage operation is performed by operating the heat source 5 and the circulation pump 12 in a state where the three-way valves 17, 63, 81 are closed. When the circulation pump 12 is operated, the hot water in the main tank 10 is taken out from the bottom portion 10b side, heated by the heat source 5, and then returned to the top portion 10a side as shown by arrows and hatching in FIG. When it is confirmed by the temperature sensors 14a to 14e that a predetermined amount of hot water heated to a predetermined temperature is stored in the main tank 10, the heat source 5 and the circulation pump 12 are stopped, and the main tank hot water storage operation is completed.

(Sub tank hot water storage operation)
The sub-tank hot water storage operation in the storage heat source system 100 is performed in the same manner as the storage heat source device 80 described above. That is, when the sub-tank hot water storage operation is performed, the ports 81a and 81b of the three-way valve 81 are opened, the port 81c is closed, the three-way valves 63a and 63c are opened, and the port 63b is closed. . Then, after that, the pump 61 is activated. As a result, as shown by arrows and hatching in FIG. 17, hot hot water stored in the main tank 10 is taken out from the top 10 a side through the first top side flow path 15, and the top side connection flow path 19 → piping After flowing in the order of 75 → the main flow portion 67 of the hot / cold water transfer channel 60 → the top side branching portion 65, it flows into the top portion 50a of the sub tank 50. Along with this, the low-temperature hot water existing in the sub tank 50 is taken out from the bottom 50b side through the second bottom side flow path 53, flows through the pipe 77 and the bottom side connection flow path 21, and then flows into the main tank 10. It flows into the bottom 10b side.

  While the replacement of hot water between the main tank 10 and the sub tank 50 proceeds in this way, the remaining amount of hot hot water in the main tank 10 has become equal to or less than a predetermined amount by the temperature sensors 14a to 14e. Alternatively, when it is confirmed by the temperature sensors 51a to 51e that a predetermined amount or more of hot hot water is stored in the sub tank 50, the sub tank hot water storage operation is completed.

(Sub tank heating operation)
The subtank heating operation is performed in the same manner as the storage heat source system 80 of the second embodiment. That is, when carrying out the subtank heating operation, the port 17a of the three-way valve 17 is closed. In the three-way valve 63, the ports 63a and 63b are opened, and the port 63c is closed. Further, in the three-way valve 81, the port 81a is closed and the ports 81b and 81c are opened.

  After the opening adjustments of the three-way valves 17, 63, 81 are made as described above, the pump 61 and the heating secondary circulation pump 72 are put into operation. Thereby, the hot water stored in the sub tank 50 is taken out from the top 50a side via the second top side flow channel 52, and the second top side branch flow channel 52b → the main flow portion 67 → the bottom side of the hot water transport flow channel 60. After flowing in the order of the branching portion 66, it returns to the bottom 50b side of the sub tank 50. On the other hand, the heat medium flowing on the secondary side of the heat exchanger 62 in accordance with the operation of the heating secondary side circulation pump 72 is heat-exchanged and heated in the heat exchanger 62 provided in the middle of the main flow section 67, and is supplied to the load terminal. Supplied.

(Main tank heating operation)
The main tank heating operation is also performed in the same manner as the storage heat source system 80 of the second embodiment. That is, when the main tank heating operation is performed, the port 17a of the three-way valve 17 is closed. In the three-way valve 63, the ports 63a and 63b are opened, and the port 63c is closed. Further, in the three-way valve 81, the ports 81a and 81b are opened, and the port 81c is closed.

  After the opening adjustments of the three-way valves 17, 63, 81 are made as described above, the pump 61 and the heating secondary circulation pump 72 are put into operation. Thereby, the hot water stored in the main tank 10 is taken out from the top 10 a side through the first top-side flow path 15. The hot hot water taken out from the main tank 10 flows in the order of the top side connection flow path 19 → the piping 75 → the main flow portion 67 of the hot water transfer flow path 60 → the bottom side branching portion 66, and then the bottom 50 b side of the sub tank 50. Flow into. Then, the hot water flowing into the bottom 50b side of the sub tank 50 and the low temperature hot water existing on the bottom 50b side of the sub tank 50 are taken out via the second bottom side flow path 53, and are connected to the pipe 77 and the bottom side connection flow. It flows through the path 21 and returns to the bottom 10b side of the main tank 10. On the other hand, the heat medium flowing on the secondary side of the heat exchanger 62 in accordance with the operation of the heating secondary side circulation pump 72 is heat-exchanged and heated in the heat exchanger 62 provided in the middle of the main flow section 67, and is supplied to the load terminal. Supplied.

(Main tank hot water operation)
The main tank hot water supply operation is performed in the same manner as the storage heat source systems 1 and 80 of the first and second embodiments. That is, when the main tank hot water supply operation is performed, the port 17a of the three-way valve 17 is closed and the ports 17b and 17c are opened, and the hot water in the main tank 10 is supplied to the first top side flow path 15. Through the main tank 10. Further, the three-way valve 81 is closed. In this state, when a curan or the like connected to the pipe connection port 15a is opened, low-temperature hot water is introduced from the external water supply source connected to the pipe connection port 16a to the bottom 10b side of the main tank 10. . Along with this, hot hot water stored on the top 10a side of the main tank 10 is pushed out of the main tank 10 and supplied to the currant or the like.

(Sub tank hot water operation)
The sub tank hot water supply operation is performed in substantially the same manner as that performed in the storage heat source system 1 of the first embodiment. That is, when the sub tank hot water supply operation is performed, the ports 81b and 81c of the three-way valve 81 are opened, the port 81a is closed, the ports 17a and 17b of the three-way valve 17 are opened, and the port 17c is closed. It is said. In this state, when the curan or the like connected to the pipe connection port 15a is opened, low-temperature hot water is introduced from the external water supply source connected to the pipe connection port 16a to the bottom 50b side of the sub tank 50. Accordingly, hot hot water stored on the top 50 a side of the sub tank 50 is pushed out of the sub tank 50. The hot water pushed out from the sub tank 50 flows in the order of the second top-side flow path 52 → the pipe 76 → the tank connection flow path 18 → the first top-side flow path 15 and is supplied to the currant or the like.

(Memorial operation)
The memorial operation is also performed in the same manner as the storage heat source device 1 described above. More specifically, when the storage heat source device 100 performs a chasing operation, the chasing primary side circulation pump 26 and the chasing secondary side circulation pump 30 are put into an operating state, and FIG. 22 shows an arrow or hatching. As shown, hot water stored in the main tank 10 circulates in the bath circulation channel 13, and hot water in the bathtub circulates through the bath return channel 28 and the bath return channel 29. Thereby, the hot and cold water in the bathtub is heated by heat exchange with the hot hot water flowing in the bath circulation passage 13 in the bath heat exchanger 27.

  As described above, the storage heat source system 100 according to the present embodiment includes the tank connection flow path 18 and the top side connection flow path 19 of the basic unit 2 as well as the storage heat source system 1 according to the first embodiment. The second top side channel 52 and the hot water transport channel 60 of the unit 3 are connected by piping 75 and 76, and the bottom side connection channel 21 of the basic unit 2 and the second bottom side channel 53 of the extension unit 3 are connected. Can be constructed by simply connecting them with the pipe 77. Further, the storage heat source system 100 does not need to directly connect the expansion unit 3 to the heat source 5 when the expansion unit 3 is added to the basic unit 2. Therefore, in the storage heat source system 100, there are few places to be connected to the piping when the extension unit 3 is added, and the extension unit 3 can be easily added. In addition, since the storage heat source system 100 requires a small number of pipes when the expansion unit 3 is added, there are few portions that can dissipate heat along with the movement of hot water, and the amount of heat energy released is small.

  Since the storage heat source system 100 of the present embodiment has a configuration in which the above storage heat source systems 1 and 80 are combined, the expansion unit 3 is connected to the basic unit 2 by piping, so that the basic unit 2 is implemented alone. In addition to the possible operation methods, the subtank hot water storage operation can be performed, or the subtank heating operation and the subtank hot water supply operation can be performed using the hot water stored in the subtank 50. The storage heat source system 100 can also perform main tank heating operation using hot water stored in the main tank 10. Therefore, the storage heat source system 100 of this embodiment can be utilized for various applications without wasting the thermal energy of the hot water stored in the main tank 10 and the sub tank 50.

  The storage heat source system 100 according to the present embodiment is configured to provide the three-way valves 17, 63, 81 similarly to the storage heat source systems 1 and 80 to control the flow of hot water, but the present invention is limited to this. Instead of this, an on-off valve or the like may be provided in place of the three-way valves 17, 63, 81 as described in the first and second embodiments, and the flow of hot water may be controlled by these.

It is an operation principle figure showing the basic unit, extension unit, and storage type heat source system concerning a 1st embodiment of the present invention. It is an operation principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 1 implements a main tank hot water storage driving | operation. It is an operation | movement principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 1 implements a sub tank hot water storage driving | operation. It is an operation | movement principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 1 implements heating operation. It is an operation | movement principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 1 implements a main tank hot water supply driving | operation. It is an operation | movement principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 1 implements a sub tank hot water supply operation. It is an operation | movement principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. Basic unit, expansion unit according to the inventions relating to the present invention, as well, is an operation principle diagram showing a storage type heat source system. FIG. 9 is an operation principle diagram showing a flow of hot water when the storage heat source system shown in FIG. 8 performs a main tank hot water storage operation. It is an operation principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 8 implements a sub tank hot water storage driving | operation. It is an operation principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 8 implements subtank heating operation. It is an operation principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 8 implements a main tank heating operation. It is an operation principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 8 implements hot water supply operation. It is an operation | movement principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. It is an operation principle figure showing a basic unit, an extension unit, and a storage type heat source system concerning another embodiment of the present invention. FIG. 16 is an operation principle diagram showing a flow of hot water when the storage heat source system shown in FIG. 15 performs a main tank hot water storage operation. It is an operation principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 15 implements a sub tank hot water storage driving | operation. It is an operation principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 15 implements subtank heating operation. It is an operation principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 15 implements main tank heating operation. FIG. 16 is an operation principle diagram showing a flow of hot water when the storage heat source system shown in FIG. 15 performs a main tank hot water supply operation. It is an operation principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 15 implements a sub tank hot-water supply driving | operation. It is an operation | movement principle figure which shows the flow of the hot water in case the storage type heat source system shown in FIG. 15 implements a memorial operation.

1,80,100 Storage heat source system 2 Basic unit (storage heat source device)
3 Expansion unit (storage heat source device)
5 Heat source 10 Main tank (first storage tank)
10a, 50a Top 10b, 50b Bottom 11 Heating circulation channel (first liquid channel)
15 First top side flow path 16 First bottom side flow path 17 Three-way valve (valve)
18 Tank connection channel 19 Top side connection channel 21 Bottom side connection channel 50 Sub tank (second storage tank)
52 2nd top side channel 52b 2nd top side branch channel 53 2nd bottom side channel 60 Hot water conveyance channel (2nd liquid channel)
61 Pump 62 Heat exchanger 63, 81 Three-way valve (flow path adjusting means)
65 Top side branch part 66 Bottom side branch part 67 Main flow part 75, 76, 77 Pipe A, B, C, D Connection part

Claims (13)

A storage-type heat source device for a basic unit that can be connected to a storage-type heat source device for an extension unit by pipe connection to construct a storage-type heat source system,
Connected to the first storage tank capable of storing the liquid heated by the heat energy generated in the heat source, the first top-side channel connected to the top side of the first storage tank, and the bottom side of the first storage tank A first bottom channel, a first liquid channel capable of circulating a liquid between the heat source and the first storage tank, and a bottom connection channel connected to the bottom of the first storage tank A storage-type heat source device having a top-side connecting flow channel connected to the top side of the first storage tank,
A second storage tank capable of storing liquid, a second top-side channel connected to the top side of the second storage tank, a second bottom-side channel connected to the bottom side of the second storage tank, A second liquid flow path, the second liquid flow path being branched from the main flow portion, a top branch portion branched from the main flow portion and connected to the top side of the second storage tank, and second from the main flow portion. For a storage type heat source device for an extension unit having a bottom side branching portion connected to the bottom side of the storage tank, and a flow path adjusting means capable of adjusting the conduction state between the top side branching portion and the bottom side branching portion and the main flow portion Can be connected by piping,
The main flow portion of the second liquid flow path of the storage heat source device for the extension unit can be connected to the top side connection flow path by piping.
Pipe connectable der the second bottom side channel of the storage type heat source device for expansion unit on the bottom side connecting passage is,
The top side connection flow path is connected to the middle of the first top side flow path,
In the middle of the first top-side flow path, between the connection portion A between the top-side connection flow path and the first top-side flow path and the connection portion C between the first top-side flow path and the first storage tank. The tank connection channel is connected,
To the tank connection channel, reservoir-type heat source and wherein a pipe connectable der Rukoto the second top side channel of the storage type heat source device for expansion units. The bottom side connection flow path is connected to the first bottom side flow path,
In the middle of the path from the first bottom side flow path through the first storage tank to the first top side flow path, the connection portion A between the top side connection flow path and the first top side flow path, or the bottom side connection It is possible to prevent inflow of liquid into the first storage tank or outflow of liquid stored in the first storage tank in the middle of the path from the connection part B between the flow path and the first bottom side flow path to the connection part A. The storage-type heat source device according to claim 1, wherein an internal valve is provided.   First in the middle of the path from the connection part D between the first top side flow path and the tank connection flow path or the connection part B between the bottom side connection flow path and the first bottom side flow path to the connection part D. The storage heat source device according to claim 1, further comprising a valve capable of preventing inflow of liquid into the storage tank or outflow of liquid stored in the first storage tank. The storage heat source device according to any one of claims 1 to 3, further comprising a flow path switching unit capable of switching a conduction state between the first top side flow path and the tank connection flow path. It constitutes a storage heat source device for an expansion unit that can be connected to the storage heat source device for the basic unit by pipe connection to construct a storage heat source system,
A second storage tank capable of storing liquid, a second top-side channel connected to the top side of the second storage tank, a second bottom-side channel connected to the bottom side of the second storage tank, A second liquid channel,
The second liquid flow path includes a main stream part, a top branch part branched from the main stream part, a bottom branch part branched from the main stream part, a top branch part, a bottom branch part, and a main stream part. And a heat exchanger capable of transferring heat energy between the liquid flowing in the second liquid flow path and the other liquid, and a heat exchanger capable of transferring heat energy between the liquid and the other liquid.
A top branch is connected to the top of the second storage tank;
A storage-type heat source device in which the bottom-side branch portion is connected to the bottom side of the second storage tank,
Connected to the first storage tank capable of storing the liquid heated by the heat energy generated in the heat source, the first top-side channel connected to the top side of the first storage tank, and the bottom side of the first storage tank A first bottom channel, a first liquid channel capable of circulating a liquid between the heat source and the first storage tank, and a bottom connection channel connected to the bottom of the first storage tank In addition, pipe connection is possible to a storage heat source device for a basic unit having a top-side connection flow channel connected to the top side of the first storage tank,
A the main stream of the second liquid flow path can be connected to the top side connecting flow path of the storage type heat source device constituting the basic unit, Ri pipe connectable der the second bottom side channel on the bottom side connecting passage,
It is piped to a storage heat source device for a basic unit that has a tank connection channel that leads to the middle of the first top channel.
Savings Tomegata heat source and wherein the second top side channel is a piping connectable to the tank connection channel. The second top-side flow path and the second liquid flow path are connected to each other, and have a flow path adjusting means capable of adjusting a conduction state between the second top-side flow path and the second liquid flow path. The storage heat source device according to claim 5 . The second top channel is connected directly or indirectly to the main stream of the second liquid channel,
A pump capable of pumping liquid is arranged in the middle of the main stream part of the second liquid channel,
The storage heat source device according to claim 5 or 6 , wherein the heat exchanger is arranged in a main flow portion and / or a bottom side branch portion of the second liquid flow path. The storage heat source device according to claim 5 or 6 , wherein a pump capable of pumping liquid is arranged in a main flow portion of the second liquid flow path. The storage heat source device according to any one of claims 5 to 8 , wherein the heat exchanger is disposed in a main flow portion of the second liquid flow path. A storage type heat source system having a storage type heat source device for a basic unit and a storage type heat source device for an extension unit, and configured by connecting both pipes,
The storage heat source device for the basic unit has a first storage tank capable of storing a liquid heated by heat energy generated in the heat source, and a first top side flow path connected to the top side of the first storage tank A first bottom channel connected to the bottom side of the first storage tank, a first liquid channel capable of circulating liquid between the heat source and the first storage tank, and the first storage tank A bottom side connection flow path connected to the bottom side of the first storage tank, and a top side connection flow path connected to the top side of the first storage tank,
The storage heat source device for the extension unit is configured by the storage heat source device according to any one of claims 5 to 9 ,
The main stream portion of the second liquid flow path of the storage heat source device for the extension unit is pipe-connected to the top side connection flow channel of the storage heat source device for the basic unit,
A storage-type heat source system, wherein a second bottom-side flow path of a storage-type heat source device for an extension unit is pipe-connected to a bottom-side connection flow path of a storage-type heat source device for a basic unit. A storage type heat source system having a storage type heat source device for a basic unit and a storage type heat source device for an extension unit, and configured by connecting both pipes,
The storage heat source device for the basic unit is configured by the storage heat source device according to any one of claims 1 to 4.
A storage heat source device for an extension unit is connected to a second storage tank capable of storing liquid, a second top-side flow path connected to the top side of the second storage tank, and a bottom side of the second storage tank The second bottom side flow path and the second liquid flow path,
The second liquid flow path includes a main stream part, a top branch part branched from the main stream part, a bottom branch part branched from the main stream part, a top branch part, a bottom branch part, and a main stream part. And a heat exchanger capable of transferring heat energy between the liquid flowing in the second liquid flow path and the other liquid, and a heat exchanger capable of transferring heat energy between the liquid and the other liquid.
A top branch is connected to the top of the second storage tank;
The bottom side branch is connected to the bottom side of the second storage tank,
The main stream portion of the second liquid flow path of the storage heat source device for the extension unit is pipe-connected to the top side connection flow channel of the storage heat source device for the basic unit,
A storage-type heat source system, wherein a second bottom-side flow path of a storage-type heat source device for an extension unit is pipe-connected to a bottom-side connection flow path of a storage-type heat source device for a basic unit. A storage heat source system having a storage heat source device for a basic unit and a storage heat source device for an extension unit, and configured by connecting both pipes,
The storage heat source device for the basic unit has a first storage tank capable of storing a liquid heated by heat energy generated in the heat source, and a first top side flow path connected to the top side of the first storage tank A first bottom channel connected to the bottom side of the first storage tank, a first liquid channel capable of circulating liquid between the heat source and the first storage tank, and a first top side Connected to the middle of the first bottom side flow path, the tank connection flow path connected to the middle of the first top side flow path via the flow switching means, and the first bottom side flow path A bottom side connecting flow path,
The flow path switching means is arranged between a connection portion A between the first top-side flow path and the top-side connection flow path and a connection portion C between the first top-side flow path and the first storage tank. ,
By introducing the liquid from the bottom side into the first storage tank via the first bottom side flow path, the liquid stored on the top side of the first storage tank is first stored via the first top side flow path. Can be led out of the tank,
The liquid stored in the first storage tank is led out from the bottom side of the first storage tank through the first liquid flow path and heated in the heat source, and the liquid heated by the heat source is supplied to the first storage tank from the top side. By introducing, the liquid in the first storage tank can be heated,
A storage-type heat source device for the extension unit has a second storage tank capable of storing liquid, a second top-side flow path connected to the top side of the second storage tank, and a bottom side of the second storage tank. It has a connected second bottom side flow path and a second liquid flow path, and the liquid is led into and out of the second storage tank via the second top side flow path and the second bottom side flow path. Is something that can be
The second liquid channel is connected to the top side connecting channel of the storage heat source device for the basic unit by piping, and the top side is branched from the main channel and connected to the top side of the second storage tank. A pump having a branching portion, a bottom-side branching portion branched from the main flow portion and connected to the bottom side of the second storage tank, and capable of pumping liquid in the middle; and a heat load outside the second heating system A heat exchanger capable of heating the liquid supplied to the liquid by heat exchange with the liquid flowing in the second liquid flow path, and the liquid flowing in the main flow portion is selectively selected as either the top-side branch portion or the bottom-side branch portion Can be distributed to
The tank connection flow path of the storage heat source device for the basic unit and the second top side flow path of the storage heat source device for the extension unit are connected by piping,
A storage-type heat source system, wherein a bottom-side connection flow path of the storage heat source device for the basic unit and a second bottom-side flow path for the extension unit are connected by piping. A storage heat source system having a storage heat source device for a basic unit and a storage heat source device for an extension unit, and configured by connecting both pipes,
The storage heat source device for the basic unit has a first storage tank capable of storing a liquid heated by heat energy generated in the heat source, and a first top side flow path connected to the top side of the first storage tank A first bottom channel connected to the bottom side of the first storage tank, a first liquid channel capable of circulating liquid between the heat source and the first storage tank, and a first top side Connected to the middle of the first bottom side flow path, the tank connection flow path connected to the middle of the first top side flow path via the flow switching means, and the first bottom side flow path A bottom side connecting flow path,
The flow path switching means is arranged between a connection portion A between the first top-side flow path and the top-side connection flow path and a connection portion C between the first top-side flow path and the first storage tank. ,
By introducing the liquid from the bottom side into the first storage tank via the first bottom side flow path, the liquid stored on the top side of the first storage tank is first stored via the first top side flow path. Can be led out of the tank,
The liquid stored in the first storage tank is led out from the bottom side of the first storage tank through the first liquid flow path and heated in the heat source, and the liquid heated by the heat source is supplied to the first storage tank from the top side. By introducing, the liquid in the first storage tank can be heated,
A storage-type heat source device for the extension unit has a second storage tank capable of storing liquid, a second top-side flow path connected to the top side of the second storage tank, and a bottom side of the second storage tank. A second bottom channel, a second liquid channel, and a top branch channel connected in the middle of the second top channel, the second top channel and the second bottom; The liquid can be led into and out of the second storage tank through the side channel,
The second liquid channel is connected to the top side connecting channel of the storage heat source device for the basic unit by piping, and the top side is branched from the main channel and connected to the top side of the second storage tank. A pump having a branching portion, a bottom-side branching portion branched from the main flow portion and connected to the bottom side of the second storage tank, and capable of pumping liquid in the middle; and a heat load outside the second heating system A heat exchanger capable of heating the liquid supplied to the liquid by heat exchange with the liquid flowing in the second liquid flow path, and the liquid flowing in the main flow portion is selectively selected as either the top-side branch portion or the bottom-side branch portion Can be distributed to
The top branch flow path is connected to the second liquid flow path, the top side connection flow path, or the middle of the pipe connecting the second liquid flow path and the top side connection flow path,
The second top-side flow path is connected to a tank connection flow path of the storage heat source device for the basic unit,
The storage-type heat source system, wherein the second bottom-side flow path is connected by piping to a bottom-side connection flow path of the storage heat source device for the basic unit.

Images