CN216897449U - Multi-machine parallel heating and water supply system - Google Patents

Abstract

The utility model discloses a multi-machine parallel heating and water supplying system which comprises a heat source main body, a connecting device and a water supplying device. The heat source main body comprises a plurality of hot water devices, water outlet pipes and water return pipes, wherein the hot water devices, the water outlet pipes and the water return pipes are arranged in parallel, the water outlet pipes are connected with all hot water outlet ends, and the water return pipes are connected with all water return ends. The connecting device is respectively connected with the water outlet pipe and the water return pipe to form a main cycle; a first heat exchange cycle is formed between the water supply device and the connecting device, and the main cycle is not communicated with the waterway of the first heat exchange cycle. The multi-machine parallel heating and water supply system can meet the requirements of stable and continuous water supply in areas with large heat load requirements and can supply hot water continuously during maintenance; the internal structure is simple, and a circulating pump with larger power is not needed.

Description

Multi-machine parallel heating and water supply system

Technical Field

The utility model belongs to the technical field of water heater heat supply, and particularly relates to a multi-machine parallel heating and water supply system.

Background

The water heater is a common hot water supply device in family life, and can be used for supplying hot water for bathing and hot water required by heating.

The existing single gas heating hot water furnace has low heat load and is only suitable for single family. And to the region that needs very big hot water demand, if adopt single large-scale, powerful hot water equipment, the condition that the thermal load is not enough and can't satisfy user's demand appears easily, and large-scale hot water equipment occupation space is big, the installation is maintained inconveniently, in case break down need maintain then can't realize the incessant hot water supply of all weather.

In addition, in the process of supplying hot water by the hot water facility, when hot water for bathing and hot water for heating are supplied, the hot water for bathing is usually preferentially supplied, and then hot water for heating is supplied. However, if only the hot water for bathing is supplied for a long time, the amount of heat required for heating hot water is insufficient, and the temperature of the heating area fluctuates greatly.

When hot water for bathing is supplied in the related art, low-temperature water mixed with the hot water for bathing often needs to be returned to hot water equipment for reheating and then corresponding hot water is supplied, so that the water circulation load of the whole hot water equipment is extremely high, and the long-term stable operation of the hot water equipment during large-flow hot water supply is not facilitated.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the multi-unit parallel heating and water supplying system can realize the heat supply of hot water for bathrooms in a large area, is high in heat load and convenient to maintain, solves the technical problem that a single hot water device in the prior art cannot meet the requirement of hot water for the large area, and also solves the technical problems that the single large hot water device is large in size and difficult to install and maintain.

According to the embodiment of the utility model, the multi-unit parallel heating and water supplying system comprises: the heat source main body comprises a plurality of hot water devices, a water outlet pipe and a water return pipe, wherein the hot water devices, the water outlet pipe and the water return pipe are arranged in parallel; the connecting device is respectively connected with the water outlet pipe and the water return pipe to form a main cycle; and the water supply device and the connecting device form a first heat exchange cycle, and the main cycle is not communicated with the waterway of the first heat exchange cycle.

According to the multi-unit parallel heating and water supplying system provided by the embodiment of the utility model, hot water generated by the heat source bodies arranged in parallel can be introduced into the connecting device to form a main cycle, so that the heat of the heat source bodies is supplied to the connecting device; when the water supply device needs hot water, sufficient hot water for bathing is obtained by exchanging heat with the first connecting device, so that the hot water for bathing can keep a preset temperature; because the bathing hot water does not need to flow back to the hot water device again after heat exchange, but forms independent water supply circulation, the independent main circulation and the first heat exchange circulation can realize lasting and stable hot water supply for large-area water areas and reduce the circulation load of the hot water equipment. According to the utility model, as the plurality of hot water devices are arranged in parallel, the quantity of the hot water devices required to be started can be distributed according to the heat load demand of the water supply device so as to meet the water supply demand of the area with larger heat load demand; the arrangement form of a plurality of hot water devices is flexible and is not limited by sites.

The multi-unit parallel heating water supply system according to some embodiments of the present invention further includes: and the heat supply device and the connecting device form a second heat exchange cycle.

According to some embodiments of the utility model, the connecting device comprises a first connecting device and a second connecting device which are connected in series, one end of the first connecting device is connected with the water outlet pipe, and the other end of the second connecting device is connected with the water return pipe.

According to some embodiments of the utility model, the connecting device comprises a first connecting device and a second connecting device which are connected in parallel, the water outlet pipe is connected with the first connecting device and the second connecting device respectively, and the other ends of the second connecting device and the first connecting device are connected with the water return pipe.

Optionally, the first heat exchange cycle is formed between the water supply device and the first connecting device; and the second heat exchange cycle is formed between the heat supply device and the second connecting device.

Optionally, the first connecting means is a first heat exchanger and the second connecting means is a second heat exchanger or a decoupling tank.

According to a further embodiment of the utility model, the multi-unit parallel heating and water supplying system further comprises a three-way valve, the first connecting device and the second connecting device are arranged in parallel through the three-way valve, and the three-way valve is respectively communicated with the water outlet pipe, the first connecting device and the second connecting device.

Optionally, the three-way valve may communicate the water outlet pipe and the first connecting device, or communicate the water outlet pipe and the second connecting device, respectively.

Advantageously, the three-way valve is adapted to regulate the flow through each passage, and water in the outlet pipe may flow through the three-way valve to the first and second connections simultaneously.

According to some embodiments of the utility model, the heating apparatus further comprises: a plurality of heat supply portions, heat supply inlet tube and heat supply outlet pipe, every heat supply portion all with the heat supply inlet tube heat supply outlet pipe intercommunication, the heat supply inlet tube with the heat supply outlet pipe all with the second connecting device is connected.

Optionally, the heating device further comprises a first circulating heat exchange tube, at least one water distributor and at least one water collector, the first circulating heat exchange tube can exchange heat in the second connecting device, the hot water end of the first circulating heat exchange tube passes through the heat supply water inlet tube communicated with each water distributor, the cold water end of the first circulating heat exchange tube passes through the heat supply water outlet tube communicated with each water collector, the water distributor is communicated with each water inlet end of the heating part, and the water collector is communicated with each water outlet end of the heating part.

Optionally, the heat supply device further comprises a first heat supply circulating pump, and the first heat supply circulating pump is arranged on the first circulating heat exchange pipe.

According to some embodiments of the multi-unit parallel heating and water supplying system, the water supplying device comprises a plurality of water supplying parts and a water supplying main pipe, and the plurality of water supplying parts are connected with the first connecting device through the water supplying main pipe.

Optionally, the water supply device further comprises a water storage container and a second circulating heat exchange tube, two ends of the water supply main tube are respectively connected with the water storage container, and the water storage container is connected with the first connecting device through the second circulating heat exchange tube and exchanges heat.

Optionally, the water supply device further comprises a water supply circulating pump and a second heat supply circulating pump, the water supply circulating pump is arranged on the water supply main pipe, and the second heat exchange circulating pump is arranged on the second circulating heat exchange pipe.

According to some embodiments of the utility model, the multi-unit parallel heating and water supplying system further comprises a cold water source, the cold water source is communicated with the cold water using end of each water supplying part, the cold water source is communicated with the water storage container to supply water to the water storage container, the cold water source is communicated with the water return pipe to provide cold water for the heat source main body, and the cold water source is communicated with the heat supplying device to supplement water for the heat supplying device.

According to the multi-unit parallel heating water supply system of some embodiments of the present invention, the hot water device is a single heating type gas heating water heater or a gas water heater.

According to some embodiments of the utility model, the multi-machine parallel heating water supply system further comprises a control system, the control system is connected with the heat source main body, the water supply device and the heat supply device, and the control system controls the heat source main body to start a corresponding number of hot water devices to supply heat according to the heat load required by the water supply device and/or the heat load required by the heat supply device.

Additional aspects and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a multi-unit parallel heating and water supplying system implemented by a three-way valve in parallel by using a first connecting device and a second heat exchanger according to some embodiments of the present invention.

Fig. 2 is a partially enlarged schematic structural view of a region I in fig. 1.

Fig. 3 is a schematic diagram of a part of a multi-unit parallel heating and water supplying system in which the first connecting device and the decoupling tank are connected in parallel through a three-way valve according to some embodiments of the utility model.

Fig. 4 illustrates a multi-unit parallel heating water supply system in which the first connection device and the second heat exchanger are connected in series according to some embodiments of the present invention.

Fig. 5 is a partially enlarged structural view of a region ii in fig. 4.

Fig. 6 is a partial schematic view of a multi-unit parallel heating and water supply system with a first connection device and a decoupling tank connected in series according to some embodiments of the utility model.

Fig. 7 is a schematic diagram of a three-way valve according to some embodiments of the utility model.

Fig. 8 is a schematic diagram of a three-way valve according to further embodiments of the utility model.

Fig. 9 is a schematic diagram of a three-way valve according to still further embodiments of the utility model.

Reference numerals:

1000. a multi-machine parallel heating and water supply system;

100. a heat source main body;

110. a hot water device; 111. a water outlet; 112. a water return port; 113. a gas inlet;

121. a water outlet pipe; 122. a water return pipe; 123. a gas pipe;

130. a flue; 140. a circulation pump;

200. a water supply device;

210. a water supply part; 211. a cold water end; 212. a water end for hot water;

220. a water supply main pipe; 221. a water supply circulation pump;

230. a water storage container; 240. a second circulating heat exchange tube; 241. a second heat supply circulation pump;

300. a heating device;

310. a heat supply section; 311. a water inlet end; 312. a water outlet end;

321. a first circulating heat exchange tube; 322. a first heat supply circulation pump; 323. a heat supply water inlet pipe; 324. a heat supply water outlet pipe;

325. a water separator; 326. a water collector;

400. a first connecting means;

500. a second connecting means;

510. a second heat exchanger; 511. a first interface; 512. a second interface; 513. a third interface; 514. a fourth interface; 520. a decoupling tank; 521. a first port; 522. a second port; 523. a third port; 524. a fourth port;

600. a three-way valve; 610. a first end; 620. a second end; 630. a third end;

601. a valve body; 6011. a water inlet channel; 6012. a first water outlet channel; 6013. a second water outlet channel; 6014. a manifold chamber; 60141. a first through opening; 60142. a second through opening;

602. a valve core; 6021. a first channel; 6022. a second channel; 6023. a third channel; 6024. a protrusion;

603. a drive mechanism;

700. a source of cold water; 800. a control system;

910. a first expansion tank; 920. a second expansion tank; 930. and a third expansion tank.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The multi-unit parallel heating and water supplying system 1000 according to the embodiment of the present invention will be described with reference to the drawings of the specification, and the multi-unit parallel heating and water supplying system 1000 according to the present invention may be used in areas with large heat load demands, such as schools, office parks, factories, hotels, and hospitals, to realize central heating and central water supply.

A multiple parallel heating water supply system 1000 according to an embodiment of the present invention, as shown in fig. 1 and 4, includes: a heat source main body 100, a connecting device, and a water supply device 200.

Wherein the heat source main body 100 includes a plurality of hot water devices 110, a water outlet pipe 121 and a water return pipe 122, which are arranged in parallel, as shown in fig. 1 and 4, each hot water device 110 has a hot water outlet end, for example, the hot water outlet end is a water outlet 111 arranged on each hot water device 110 in a specific example. Each of the hot water devices 110 has a return end, such as a return port 112 provided on the respective hot water device 110 in the specific example.

The water outlet pipe 121 is communicated with the hot water outlet end of each hot water device 110, specifically, can be communicated with the water outlet 111; the water return pipe 122 communicates with the water return end of each hot water device 110, and may specifically communicate with the water return port 112.

That is, each hot water device 110 may return water through the return pipe 122 connected to the return port 112; each of the hot water devices 110 may discharge water through a water outlet pipe 121 connected to the water outlet 111, and each of the hot water devices 110 may heat the water returned to the hot water device 110 and output the heated water as hot water having a certain temperature.

As shown in fig. 2, 3, 5, and 6, one end of the connection device is connected to the outlet pipe 121, and the other end of the connection device is connected to the return pipe 122, thereby forming a main circulation, so that the hot water in the hot water unit 110 can be fed into the connection device from the outlet pipe 121, and the heat in the hot water unit 110 can be transferred to the connection device.

With continued reference to fig. 2, 3, 5 and 6, a first heat exchange cycle is formed between the water supply device 200 and the first connection device 400, the first heat exchange cycle and the main cycle are independent cycles, and the water paths between the first heat exchange cycle and the main cycle are not communicated, that is, when hot water or heat exists in the connection device, the water supply device 200 can extract heat from the connection device and heat the bath water.

As can be seen from the above-described structure, in the multi-unit parallel heating water supply system 1000 according to the embodiment of the present invention, when the water supply device 200 requires heat, the heat source main body 100 is activated and hot water is supplied to the connection device through the water outlet pipe 121, so that sufficient heat can be supplied to the connection device by the continuous flow of the main cycle.

And the water supply device 200 further continuously exchanges heat with the connection device through the first heat exchange cycle, so that the water in the water supply device 200 is heated to a desired temperature. In the heat exchange process, the water in the first heat exchange cycle is not mixed with the water in the main cycle, and the water in the first heat exchange cycle does not need to flow back to the hot water device 110, so that the length of the heat exchange tubes required to be arranged is shortened, the circulating pumping quantity required in the first heat exchange cycle is reduced, and the circulating load of the pump required by the hot water device 110 in the heat circulation maintaining process is saved, so that the hot water supply mode of the multi-machine parallel heating and water supplying system 1000 of the utility model is more flexible and convenient, and the internal structure of the multi-machine parallel heating and water supplying system 1000 is simple and has small load.

The plurality of water heating devices 110 arranged in parallel can selectively open the water heating devices 110 with different numbers, different heating powers and different rated loads according to the heat load required by the water supply device 200, thereby adjusting the output heat and the total output power of the heat source main body 100 formed by each water heating device 110, and ensuring that the heat in the connecting device is enough to meet the heat required by the hot water supply of the water supply device 200, thereby saving the operating frequency of the heat source main body 100 and reasonably utilizing the heat output by the heat source main body 100. The arrangement form of the hot water devices 110 is flexible, is not limited by space, can fully utilize narrow installation space to arrange each hot water device 110, is convenient to assemble, and does not need special equipment space.

It can be understood that, compared with the scheme of returning the low-temperature water mixed with the bath hot water to the hot water equipment for reheating and then providing the corresponding hot water in the prior art, the multi-unit parallel heating water supply system 1000 of the utility model can reduce the water circulation load, and is beneficial to the long-term stable operation of the water supply device 200 and the provision of the required hot water.

In some embodiments of the present invention, as shown in fig. 1, 3, 4 and 6, the multiple parallel heating water supply system 1000 further includes a heating apparatus 300, and the heating apparatus 300 and the connection apparatus form a second heat exchange cycle. Then, when the heating apparatus 300 has a heating demand, the heat in the main cycle entering into the connection apparatus can simultaneously satisfy the heat demand of the heating apparatus 300. Meanwhile, the heat source main body 100 may satisfy not only the heat demand required for hot water supply of the water supply device 200 but also the heating demand required for heat supply of the heat supply device 300.

Alternatively, the flow paths between the second heat exchange cycle and the main cycle are also independent from each other, so that the second heat exchange cycle is used as a separate cycle, and the main cycle is used as another separate cycle, thereby saving the load required for circulating the water in the second heat exchange cycle into the heat source body 100.

Further, as shown in fig. 4, 5 and 6, the connection means further includes a first connection means 400 and a second connection means 500, and one end of the first connection means 400 is connected to the water outlet pipe 121 so that the hot water flowing out of the heat source body 100 can be supplied to the first connection means 400. The other end of the first connection unit 400 is connected to the second connection unit 500, so that the hot water is simultaneously supplied to the second connection unit 500 while being supplied to the first connection unit 400, thereby realizing the integrated main circulation heat exchange of the heat source body 100, the first connection unit 400, and the second connection unit 500.

Here, a separate first heat exchange cycle is formed between the water supply device 200 and the first connection device 400, and a separate second heat exchange cycle is formed between the heating device 300 and the second connection device 500, in these examples, when the water supply device 200 needs a certain amount of heat during water supply, the first heat exchange cycle is started at the same time as the main cycle, so as to realize the heat exchange in the main cycle to the first heat exchange cycle; similarly, when the heating apparatus 300 needs a certain amount of heat during heating, the second heat exchange cycle is started while the main cycle is started, so that heat in the main cycle is exchanged to the second heat exchange cycle. Then, by the above example, after the heat source main body 100 of the present application is operated, simultaneous satisfaction and simultaneous supply of heat required by the water supply device 200 and heat required by the heat supply device 300 can be achieved, and the disadvantages of unstable operation and large heat fluctuation of the heat supply device 300 due to the fact that heating requirements cannot be satisfied when the water supply heat load is satisfied for a long time in the prior art are overcome. When at least one of the heating apparatus 300 and the water supply apparatus 200 requires heat, the heat source main body 100 is activated and hot water is inputted into the first connecting means 400 and the second connecting means 500 through the water outlet pipe 121.

That is, the hot water generated by the heat source bodies 100 connected in parallel can be introduced into the first connecting device 400 and the second connecting device 500, and the water supply device 200 can obtain sufficient hot water for bathing by exchanging heat with the first connecting device 400 when hot water is needed; when heat is required, the heating apparatus 300 obtains sufficient heating heat energy by exchanging heat with the second connecting apparatus 500, so that both the bathing hot water and the heating hot water can maintain a predetermined temperature. Then, the multi-unit parallel heating water supply system 1000 of the present application can realize the large load heat demand of heating and warming.

It is understood that the multiple unit parallel heating water supply system 1000 of the present invention can distribute the number of the hot water devices 110 required to be turned on according to the heat load demands of the water supply device 200 and the heating device 300 to meet the heating and water supply demands of the region having a large heat load demand. For example, heating and hot water needs of large areas such as schools, hospitals, hotels may be met simultaneously. When some hot water devices 110 are in fault, the normal work of other hot water devices 110 can not be interfered, so that the continuous supply of hot water and heat can be kept in the maintenance process, the multi-unit parallel heating water supply system 1000 can work continuously in 24 hours, the all-weather supply is realized, and the requirement of the instant opening of the water supply device 200 is met. The hot water device 110 can realize unified centralized control and single maintenance, and the operation cost is saved.

In some embodiments of the present invention, the first connection device 400 and the second connection device 500 are not limited to the above-mentioned serial connection scheme, but the first connection device 400 and the second connection device 500 are connected in parallel, the hot water in the outlet pipe 121 can be supplied to the first connection device 400 or the second connection device 500 respectively according to the requirement, and the first connection device 400 and the second connection device 500 work independently without interference.

Specifically, as shown in fig. 2 and 3, the water outlet pipe 121 communicates with both the first connecting means 400 and the second connecting means 500, so that the hot water output from the heat source body 100 can be supplied to the first connecting means 400 or the second connecting means 500. The other end of the first connection device 400 is connected to the heat source main body 100 through the water return pipe 122, and the other end of the second connection device 500 is also connected to the heat source main body 100 through the water return pipe 122, so that two main circuits connected in parallel are formed between the heat source main body 100 and the connection devices, and the hot water does not need to flow through the first connection device 400 and then flow into the second connection device 500, so that the heat exchange between the first connection device 400 and the water supply device 200 and the heat exchange between the second connection device 500 and the heat supply device 300 are not affected by each other. In these examples, too, when the water supply device 200 requires heat, the hot water flowing into the first connection device 400 provides heat sufficient for heat exchange of the water supply device 200; when the heating apparatus 300 requires heat, the hot water flowing into the second connecting apparatus 500 provides heat enough to satisfy the heat exchange of the heating apparatus 300, thereby achieving the heat required for heating and the heat required for water supply. The temperature of the water flowing into the water return pipe 122 from the first connecting means 400 is lowered, the temperature of the water flowing into the water return pipe 122 from the second connecting means 500 is also lowered, and the water is returned to the water heating apparatus 110 through the water return pipe 122 to be heated and re-warmed, thereby continuously supplying heat.

In order to control the water paths, a control valve may be disposed between each of the water return pipe 122 and the water outlet pipe 121 and the corresponding water receiving port of the wall-hanging stove 11.

Alternatively, the control valve may be a one-way valve or a ball valve.

Specifically, the water return pipe 122 is connected to each water return port 112 through a first water inlet pipe section, and a water inlet control valve is disposed on the first water inlet pipe section to control the water path connection and disconnection between the water return pipe 122 and the water return port 112 of the hot water device 110. The water outlet pipe 121 is connected to each water outlet 111 through a water supply outlet branch pipe, and a water supply outlet control valve is disposed on the water supply outlet branch pipe to control the on/off of a water path between the water outlet pipe 121 and the water outlet 111 of the hot water apparatus 110.

Alternatively, as shown in fig. 1 and 4, each of the water heating apparatuses 110 further has a gas inlet 113, and the heat source body 100 further includes a gas pipe 123, the gas pipe 123 being connected to the gas inlet 113 of each of the water heating apparatuses 110. Specifically, the gas pipe 123 is connected to the gas inlet 113 of each water heating device 110 through a gas branch pipe, and a gas control valve is disposed on the gas branch pipe to control the connection and disconnection between the gas pipe 123 and the gas inlet 113 of the water heating device 110.

Alternatively, a plurality of hot water devices 110 are arranged in parallel, and the flues 130 of the plurality of hot water devices 110 are communicated. By arranging the plurality of hot water devices 110 in parallel, the operation states of the plurality of hot water devices 110 are not affected by each other, and when the individual hot water device 110 needs to be maintained, the rest of the hot water devices 110 can also be normally operated, thereby realizing normal heat supply and water supply.

Of course, in other examples, the flues 130 of the hot water devices 110 may be independently arranged and not communicated with each other, and may be selected according to actual needs.

Alternatively, the heat source main body 100 further includes a circulation pump 140, and each of the hot water devices 110 is provided with one circulation pump 140, and water in the return pipe 122 and the outlet pipe 121 is continuously circulated by the circulation pump 140, so that the hot water device 110 can be continuously operated and provide desired hot water. The circulation pump 140 may be disposed on the return pipe 122 or the outlet pipe 121, and is located outside the hot water apparatus 110; the circulation pump 140 may be built into the hot water apparatus 110, and may be selected according to actual needs. In the present invention, by providing the aforementioned main cycle and the independent first heat exchange cycle and/or second heat exchange cycle, the load required by the circulation pump 140 during the circulation process can be reduced, and the heating and heat supply of the hot water apparatus 110 can be more stable.

Alternatively, the hot water device 110 is a single heating type gas heating water heater or a gas water heater. The single heating type gas heating water heater can only heat hot water independently and is provided with only one hot water heating cycle; this is true of gas fired water heaters, but by using the multiple parallel heating and water supply system 1000 of the present application, the disadvantages of the above-described type of hot water unit 110 can be overcome, allowing it to provide the required heat for multiple water-using terminals and hot-using terminals. The fuel used by the system is clean energy such as natural gas or liquefied gas and the like, and the emission of atmospheric pollutants can be effectively reduced.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In some embodiments of the present invention, as shown in fig. 1, 2 and 3, the multiple parallel heating water supply system 1000 further includes a three-way valve 600, and the first connection 400 and the second connection 500 are arranged in parallel by the three-way valve 600. The three-way valve 600 is communicated with the first connector 400, the second connector 500 and the water outlet pipe 121, respectively.

The method specifically comprises the following steps: as shown in fig. 2 and 3, the three-way valve 600 has a first end 610, a second end 620 and a third end 630, which are switchably connected, wherein the first end 610 is connected to the water outlet pipe 121, and two ends of the first connecting device 400 are respectively connected to the second end 620 and the water return pipe 122; both ends of the second connecting device 500 are respectively communicated with the third end 630 and the water return pipe 122. In these examples, the three-way valve 600 may further control the flow direction or rate of water in the outlet pipe 121 to achieve different heat demand supplies, or to achieve different priority levels of heat supply at different stages.

Alternatively, after the heating apparatus 300 has continuously displaced more heat from the second connection apparatus 500 and maintained its own required heating heat supply, which may be maintained at a certain heating temperature for a certain period of time, the three-way valve 600 may preferentially supply hot water into the first connection apparatus 400 to satisfy the immediate, large amount of hot water supply of the water supply apparatus 200. When the heating apparatus 300 cannot satisfy its own heating temperature interval, the three-way valve 600 may supply the water in the water outlet pipe 121 to the second connection apparatus 500 again, so as to satisfy the supply of the heat required by the heating apparatus 300, and maintain the heating apparatus 300 in the preset temperature interval. The three-way valve 600 is a common shut-off valve, and is fully opened or fully closed in the process of switching different flow paths. That is, the three-way valve 600 may communicate only the water outlet pipe 121 and the first connection means 400 after switching, or the three-way valve 600 may communicate only the water outlet pipe 121 and the second connection means 500 after switching.

Alternatively, the three-way valve 600 may adjust an overflowing flow rate in each passage, and the water in the water outlet pipe 121 may flow to the first connecting device 400 and the second connecting device 500 through the three-way valve 600 at the same time, and the three-way valve 600 at this time is formed as a flow rate adjustable valve that can simultaneously communicate two passages, so that when the water supply device 200 needs more heat, the hot water flowing to the second connecting device 500 is not turned off, but only the flow rate is reduced, thereby realizing the simultaneous operation of the water supply device 200 and the heat supply device 300, and reducing the heat supply amount of the heat supply device 300 when the water supply device 200 provides sufficient heat for the bathroom water. The three-way valve 600 does not need to be started and closed at high frequency, and the service life of the three-way valve 600 can be prolonged. Therefore, the present invention can simultaneously perform heat supply and water supply by cooperating with the flow-adjustable three-way valve 600, thereby making up for the disadvantage that the hot water device 110 only has a single hot water circulation, saving a large amount of pipeline arrangement amount, and simplifying the installation and arrangement of the pipeline. Thereby achieving the similar function of heating bathroom water heater (such as wall hanging stove) at the same time.

In some specific examples, the three-way valve 600 is used to communicate the water outlet pipe 121 with the first connection device 400 and the water outlet pipe 121 with the second connection device 500 simultaneously, so that even if the first connection device 400 and the second connection device 500 are connected in parallel, the output end of the three-way valve 600 does not need to be switched frequently to communicate with the first connection device 400 or the second connection device 500 respectively.

As shown in fig. 7, 8 and 9, the three-way valve 600 includes a valve body 601 and a valve core 602, the valve body 601 is provided with a first end 610, a second end 620 communicated with the first end 610, and a third end 630 communicated with the first end 610, and the valve core 602 is movable in the valve body 601 to switch positions relative to the second end 620 and the third end 630. The movement here may be a linear movement of the valve core 602, or a rotational movement along an axis, and is not limited in particular here.

As shown in fig. 7, 8 and 9, a water inlet channel 6011, a first water outlet channel 6012, a second water outlet channel 6013 and a confluence chamber 6014 are arranged in the valve body 601, wherein an end of the water inlet channel 6011, an end of the first water outlet channel 6012 and an end of the second water outlet channel 6013 are all communicated with the confluence chamber 6014, the other end of the water inlet channel 6011 is communicated with the first end 610, the other end of the first water outlet channel 6012 is communicated with the second end 620, the other end of the second water outlet channel 6013 is communicated with the third end 630, the valve core 602 is movable in the confluence chamber 6014, water flowing into the three-way valve 600 can be limited by flow channel walls of the water inlet channel 6011, the first water outlet channel 6012 and the second water outlet channel 6013, and different water outlet forms and different flow rate adjustments can be realized by the valve core 602.

When the first end 610 is communicated with the second end 620, hot water flows into the first connecting device 400, and the water supply device 200 can obtain heat from the first connecting device 400 to supply the hot water, so that a hot water outlet mode is formed; when the first end 610 is communicated with the third end 630, hot water flows into the second connecting device 500, and the heating device 300 can obtain heat from the second connecting device 500 to realize heating, so that a heating mode is formed; the first end 610 is simultaneously communicated with the second end 620 and the third end 630, and thus the simultaneous supply and heating of hot water are realized, thereby forming a compatible mode.

In the example of the first aspect of the present invention, as shown in fig. 7, the valve body 602 has a first passage 6021 that is always communicated with the first end 610, and the valve body 602 also has a second passage 6022 and a third passage 6023 that are communicated with the first passage 6021, that is, a plurality of intersecting passages are formed in the valve body 602, and the other part of the valve body 602 is a solid part.

Further, as shown in fig. 7, when the valve body 602 rotates about the extension line of the first passage 6021, the second passage 6022 may be connected to or disconnected from the second end 620; the third passage 6023 may be in communication with or disconnected from the third end 630. In a particular example, when the spool 602 is rotated such that the second passage 6022 communicates with the second end 620 and the third passage 6023 communicates with the third end 630, the three-way valve 600 enters the compatible mode. In the compatible mode, the valve core 602 can further rotate and adjust the size of the flow cross section between the second passage 6022 and the second end 620, and the size of the flow cross section between the third passage 6023 and the third end 630, thereby controlling the flow of hot water flowing out of the second passage 6022 or the third passage 6023 in the compatible mode. When the second channel 6022 rotates to abut against the inner wall of the valve body 601, the hot water does not flow out, and the second end 620 is closed by the valve core 602 at this time, so that the hot water does not flow out. When the third channel 6023 rotates to abut against the inner wall of the valve body 601, the hot water does not flow out, and the third end 630 is closed by the valve core 602 at this time, so that the hot water does not flow out.

To enable one of the second end 620 and the third end 630 to drain outwardly, the second and third passages 6022, 6023 are arranged at an angle; or, the simultaneous water outlet time or the separate water outlet time of the second end 620 and the third end 630 can be realized by adjusting the flow cross sections of the second channel 6022 and the third channel 6023. Or, by providing a fourth channel communicated with the first channel 6021, an outlet of the fourth channel, the second channel 6022, and the third channel 6023 are all located on the same circumferential surface of the valve core 602, thereby realizing three modes of the three-way valve 600.

The valve core 602 in these examples can be driven to rotate by the driving mechanism 603, so as to realize the control of water outlet or water non-outlet at the second end 620 and the third end 630.

In an example of the second aspect of the present invention, as shown in fig. 8, a first port 60141 communicating with the second end 620 and a second port 60142 communicating with the third end 630 are provided on a wall of the confluence chamber 6014, and when the spool 602 stops at the confluence chamber 6014 between the first port 60141 and the second port 60142, the three-way valve 600 is in the compatible mode.

Further, as shown in fig. 8, the valve core 602 is rotatably connected in the valve body 601, the valve core 602 is provided with a projection 6024, the second end 620 is closed when the projection 6024 rotates to the second end 620, the third end 630 is closed when the projection 6024 rotates to the third end 630, and the second end 620 and the third end 630 are both opened when the projection 6024 rotates to a position between the second end 620 and the third end 630. That is, during the rotation of the valve element 602, the valve element 602 can close the second end 620 or the third end 630, respectively, and the second end 620 and the third end 630 cannot discharge hot water after being closed.

Further, the valve core 602 rotates in the confluence chamber 6014 and can swing between the first and second ports 60141, 60142, so that the protrusion 6024 changes position with respect to the first and second ports 60141, 60142, and the second and third ends 620, 630 are opened or closed. In these examples, the valve core 602 can close the first and second ports 60141, 60142 except for the protrusion 6024, and the valve core 602 cannot close the first and second ports 60141, 60142, so that when the protrusion 6024 is separated from the first and second ports 60141, 60142, the valve core 602 opens the second and third ends 620, 630, and the three-way valve 600 is in the compatible mode. When the protrusion 6024 closes one of the first and second ports 60141, 60142, the three-way valve 600 is in the hot water outlet mode and the heating mode.

Optionally, the valve core 602 is swung by the driving mechanism 603, and an output shaft of the driving mechanism 603 is connected to the valve core 602, so as to drive the valve core 602 to swing.

In an example of the third aspect of the present invention, as shown in fig. 9, a first orifice 60141 communicating with the second end 620 and a second orifice 60142 communicating with the third end 630 are provided on a wall of the confluence chamber 6014, and when the spool 602 stops in the confluence chamber 6014 between the first orifice 60141 and the second orifice 60142, the three-way valve 600 is in the compatible mode.

Further, the spool 602 may oscillate between the second end 620 and the third end 630 to open or close the second end 620 or the third end 630, in these examples, the second end 620 is closed when the spool 602 moves to the second end 620, the third end 630 is closed when the spool 602 moves to the third end 630, and simultaneous opening of the second end 620 and the third end 630 is achieved when the spool 602 simultaneously avoids the second end 620 and the third end 630.

Alternatively, the valve core 602 may perform an advancing movement along the axis of the first end 610, and the first through hole 60141 and the second through hole 60142 are respectively disposed on the cavity wall of the confluence cavity 6014 at positions with different axial distances from the first end 610, when the axial distance between the first through hole 60141 and the first end 610 is smaller than the axial distance between the second through hole 60142 and the first end 610, the first through hole 60141 and the second through hole 60142 may be opened in sequence when the valve core 602 moves in the confluence cavity 6014 in a direction away from the first end 610, and the second end 620 may discharge water when the first through hole 60141 is opened and the second through hole 60142 is not opened; when the first orifice 60141 is opened and the second orifice 60142 is opened, both the second end 620 and the third end 630 may discharge water. Thus, the three-way valve 600 of the present application has two modes, i.e., a compatible mode and a hot water outlet mode.

Conversely, as shown in fig. 9, when the axial distance between the first through port 60141 and the first end 610 is greater than the axial distance between the second through port 60142 and the first end 610, when the spool 602 moves in the confluence chamber 6014 in a direction away from the first end 610, the second through port 60142 and the first through port 60141 may be opened in sequence, and when the second through port 60142 is opened and the first through port 60141 is not opened, the third port 630 may discharge water; when the first orifice 60141 is opened and the second orifice 60142 is opened, both the second end 620 and the third end 630 may discharge water. The three-way valve 600 of the present application thus has two modes, a compatible mode and a heating mode, respectively.

Optionally, the three-way valve 600 further comprises a drive mechanism 603, the drive mechanism 603 driving the valve element 602 to move in an axial feed motion along the first end 610, thereby effecting movement of the valve element 602 relative to the valve body 601.

Alternatively, the driving mechanism 603 is a motor or an electric push rod.

In some embodiments of the utility model, the first connection device 400 is a first heat exchanger (e.g. a plate heat exchanger), the second connection device 500 is a second heat exchanger 510 (e.g. a plate heat exchanger) or a decoupling tank 520.

In other examples, the first and second heat exchangers 510 may also be fin heat exchangers.

As shown in fig. 3 and 6, when the second connection device 500 is the decoupling tank 520, the decoupling tank 520 includes a first port 521, a second port 522, a third port 523, and a fourth port 524, and the first port 521, the second port 522, the third port 523, and the fourth port 524 are communicated with each other. Since the decoupling tank 520 is a conventional structure in the art, it will not be described in detail in this application. The decoupling tank 520 can realize automatic hydraulic coupling, automatically adjust hydraulic balance between the heat source main body 100 and the heat supply device 300 under the condition of resistance change of the heat supply device 300, ensure smooth heating, prevent the hot water device 110 from being frequently started and stopped, avoid energy waste, meet the requirement of large flow and small temperature difference in the heat supply device 300, and ensure that the heat supply device 300 is better used. The decoupling tank 520 may also enable non-interfering heat exchange cycles between the primary and secondary heat exchange cycles, facilitating thermal equilibrium.

In the example shown in fig. 3, the first port 521 and the second port 522 are both connected to the heating device 300, and one is for water inlet and the other is for water outlet; the third port 523 is communicated with the water outlet pipe 121 or the third port 523 is communicated with the third port 630 of the three-way valve 600, and the fourth port 524 is communicated with the water return pipe 122. At this time, the hot water discharged from the hot water apparatus 110 flows through the water outlet pipe 121, enters the decoupling tank 520 from the third port 523, and flows into the heating apparatus 300 from the first port 521 of the decoupling tank 520 and returns to the decoupling tank 520 from the second port 522, thereby performing heating. The water discharged from the fourth port 524 of the decoupling tank 520 flows through the return pipe 122 and back into the hot water unit 110, and so on.

In the example shown in fig. 6, the first port 521 and the second port 522 are both connected to the heating device 300, and one is for water inlet and the other is for water outlet; the third port 523 communicates with the water outlet side of the first connecting device 400, and the fourth port 524 communicates with the water return pipe 122. At this time, the hot water discharged from the hot water apparatus 110 flows through the water outlet pipe 121, enters the decoupling tank 520 from the third port 523, and flows into the heating apparatus 300 from the first port 521 of the decoupling tank 520 and returns to the decoupling tank 520 from the second port 522, thereby performing heating. The water discharged from the fourth port 524 of the decoupling tank 520 flows through the return pipe 122 and back into the hot water unit 110, and so on.

Alternatively, in the example where the second connection means 500 is the decoupling tank 520, as shown in fig. 3 and 6, the multiple parallel heating water supply system 1000 further includes a first expansion tank 910, and the first expansion tank 910 is provided between the second opening 522 and the heating apparatus 300. In other examples, the gas heating and water supplying system 10 further includes a plurality of first expansion tanks 910, and the plurality of first expansion tanks 910 are disposed in the plurality of hot water devices 110 in a one-to-one correspondence. The first expansion tank 910 can accommodate the expansion amount of the system water, and also has the functions of pressure fixation and water supplement for the system.

As shown in fig. 2 and 5, when the second connection device 500 is the second heat exchanger 510, the second heat exchanger 510 has a first port 511, a second port 512, a third port 513, and a fourth port 514, the first port 511 is communicated with the second port 512, and the third port 513 is communicated with the fourth port 514. By adopting the second heat exchanger 510 to exchange heat, the two parts of water in the second heat exchanger 510 are not mixed, so that impurities, rust, scale and the like in the water can be reduced to enter the hot water device 110, and the failure rate of the hot water device 110 is reduced.

Specifically, the second heat exchanger 510 has a first heat exchange flow channel and a second heat exchange flow channel, the first heat exchange flow channel and the second heat exchange flow channel are not communicated, and fluid in the first heat exchange flow channel and the second heat exchange flow channel can exchange heat, the first interface 511 and the second interface 512 are both communicated with the first heat exchange flow channel, and the third interface 513 and the fourth interface 514 are both communicated with the second heat exchange flow channel.

In the example shown in fig. 2, the first port 511 and the second port 512 are both communicated with the heating apparatus 300, the third port 513 is communicated with the third end 630 of the three-way valve 600, or the third port 513 is directly communicated with the water outlet pipe 121, and the fourth port 514 is communicated with the water return pipe 122. At this time, the hot water discharged from the hot water apparatus 110 flows through the water outlet pipe 121, enters the second heat exchanger 510 from the third port 513 through the three-way valve 600, and is then discharged out of the second heat exchanger 510 from the fourth port 514, and the water discharged from the fourth port 514 flows through the water return pipe 122 and flows back into the hot water apparatus 110. Hot water formed after heat exchange in the second heat exchanger 510 flows out of the second heat exchanger 510 from the first interface 511 and flows back to the second heat exchanger 510 from the second interface 512, so that heating heat supply of the heating device 300 is realized, and the above steps are repeated in a circulating manner.

In the example shown in fig. 5, the first port 511 and the second port 512 are both communicated with the heat supply device 300, the third port 513 is connected with the water outlet side of the first connection device 400, and the fourth port 514 is communicated with the water return pipe 122. At this time, the hot water discharged from the hot water apparatus 110 flows through the water outlet pipe 121, enters the second heat exchanger 510 from the third port 513 through the first connection device 400, and then is discharged out of the second heat exchanger 510 from the fourth port 514, and the water discharged from the fourth port 514 flows through the water return pipe 122 and flows back into the hot water apparatus 110. Hot water formed after heat exchange in the second heat exchanger 510 flows out of the second heat exchanger 510 from the first interface 511 and flows back to the second heat exchanger 510 from the second interface 512, so that heating heat supply of the heating device 300 is realized, and the above steps are repeated in a circulating manner.

Since the two water paths connected to the first heat exchange flow path and the second heat exchange flow path of the second heat exchanger 510 are not communicated, an expansion tank needs to be respectively arranged in the two water paths, so as to accommodate the expansion amount of the system water, and simultaneously, the expansion tank also has the functions of pressure fixation and water supplement for the system.

Optionally, as shown in fig. 1 and 4, the multiple parallel heating water supply system 1000 further includes a second expansion tank 920 and a third expansion tank 930, the second expansion tank 920 is disposed on the pipeline between the second connector 512 and the heating apparatus 300, and the third expansion tank 930 is disposed on the water return pipe 122. In other examples, the multiple parallel heating water supply system 1000 further includes a second expansion tank 920 and a plurality of third expansion tanks 930, the second expansion tank 920 is disposed on the pipeline between the second connector 512 and the heating apparatus 300, and the plurality of third expansion tanks 930 are disposed in the plurality of hot water apparatuses 110 in a one-to-one correspondence.

In the description of the utility model, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features for distinguishing between the described features, whether they are sequential or not.

Alternatively, as shown in fig. 1 and 4, the heating apparatus 300 further includes: the water heater comprises a plurality of heat supply parts 310, heat supply water inlet pipes 323 connected with the heat supply parts 310 and heat supply water outlet pipes 324 connected with the heat supply parts 310, wherein the heat supply water inlet pipes 323 are used as hot water supply pipes, the heat supply water outlet pipes 324 are used as cold water return flows, the heat supply water inlet pipes 323 are communicated with the water inlet of each heat supply part 310, the heat supply water outlet pipes 324 are communicated with the water outlet of each heat supply part 310, and the heat supply water inlet pipes 323 and the heat supply water outlet pipes 324 are connected with a second connecting device 500. The heating water inlet pipe 323 can provide the hot water heated by the second connecting device 500 to each heating part 310; the heat supply outlet pipe 324 can re-send the hot water consumed in each heat supply part 310 to the second connection device 500 for heat exchange, so as to ensure that the heat in the second connection device 500 can be transferred to each heat supply part 310.

Optionally, the heat supply unit 310 is mainly a radiator, a floor heater, a fan coil, or other terminal radiator, and the heat supply device 300 further includes a temperature sensor.

Optionally, as shown in fig. 1 and 4, the heat supply device 300 further includes a first circulating heat exchange pipe 321, at least one water separator 325 and at least one water collector 326, the water separator 325 is connected to the water inlet end 311 of each heat supply section 310, the water collector 326 is connected to the water outlet end 312 of each heat supply section 310, and the water separator 325 can be used for buffering and mixing water in the second connecting device 500 and distributing the water to each heat supply device 300; the water collector 326 can collect the water discharged from the heating device 300; the first circulating heat exchanging pipe 321 can exchange heat in the second connecting device 500, a hot water end of the first circulating heat exchanging pipe 321 is communicated with each water separator 325 through a heat supply water inlet pipe 323, and a cold water end of the first circulating heat exchanging pipe 321 is communicated with each water collector 326 through a heat supply water outlet pipe 324. The first circulating heat exchange pipe 321 here may be a pipe partially located in the second heat exchanger 510 as in fig. 2 and 4 and a water pipe directly connected to the second heat exchanger 510 located outside the second heat exchanger 510; or the first circulating heat exchanging pipe 321 may be a water pipe located only outside the decoupling tank 520 and directly connected to the decoupling tank 520 as in fig. 3 and 4.

Optionally, as shown in fig. 2, fig. 3, fig. 5 and fig. 6, the heating apparatus 300 further includes a first heating circulation pump 322, and the first heating circulation pump 322 is disposed on the first circulation heat exchange pipe 321, so that when the heating apparatus 300 has a heating demand, the first heating circulation pump 322 is operated to realize circulation heat exchange between the water of the heating apparatus 300 and the water of the second connecting apparatus 500, so as to meet the heating demand.

Advantageously, control valves are respectively arranged on the pipelines between the water separator 325 and the heating part 310, between the water collector 326 and the heating part 310, between the water separator 325 and the first circulating heat exchange pipe 321 and between the water collector 326 and the first circulating heat exchange pipe 321, so that the on-off of the water channel is conveniently controlled.

In some embodiments of the present invention, as shown in fig. 1 and 4, the water supply device 200 includes a plurality of water supply parts 210, a water supply main 220, and the plurality of water supply parts 210 are connected to the first connection device 400 through the water supply main 220. When the water supply parts 210 need water, the water can be introduced into the first connecting device 400 through the main water supply pipe 220 to exchange heat and then flows back to the water supply parts 210 for use, so that the hot water supply requirements of the water supply parts 210 in the region with large heat load requirements can be met. When a single hot water device 110 needs to be maintained, other hot water devices 110 do not need to be stopped, normal water supply can be realized, the all-weather hot water requirement can be met, and the use experience is better.

Optionally, the water supply part 210 is mainly a terminal water supply part 210 such as a shower head, a hand basin, a vegetable basin, etc., and the water supply device 200 further includes a water mixing valve, a booster pump, a temperature sensor, etc.

Optionally, as shown in fig. 1 and 4, the water supply device 200 further includes a water storage container 230 and a second circulating heat exchange pipe 240, two ends of the water supply main pipe 220 are respectively connected to the water storage container 230, and the water storage container 230 is connected to the first connecting device 400 through the second circulating heat exchange pipe 240 and exchanges heat. The water in the water storage container 230 can be heated by flowing through the first connecting device 400, and the heated hot water is retained in the water storage container 230, so that the hot water heated by the first connecting device 400 is stored, the use requirements of each water supply part 210 are met, the heat can be stored in advance, and each water supply part 210 can be used by opening the hot water immediately. The second circulating heat exchanging pipe 240 may be introduced into the first connecting device 400 but not communicated with the hot water flow passage in the first connecting device 400, so that heat exchange is performed between the first and second circulating heat exchanging pipes, and the water after heat exchange returns to the water storage container 230 from the second circulating heat exchanging pipe 240 again, thereby realizing hot water storage of the water storage container 230.

Optionally, the water supply device 200 further comprises a water supply circulation pump 221 and a second heat supply circulation pump 241, the water supply circulation pump 221 is disposed on the water supply main pipe 220, and the second heat exchange circulation pump is disposed on the second circulation heat exchange pipe 240. The second heat-supplying circulation pump 241 circulates the heated hot water to the water storage container 230, and simultaneously brings the cold water in the water storage container 230 back to the first connection device 400 for heating, and when the temperature of the water in the water storage container 230 reaches a certain temperature, the water-supplying circulation pump 221 is started to operate, and brings the hot water to the hot water end 212 of each water-supplying portion 210, thereby ensuring that the hot water is instantly available. When the temperature of the water in the water storage container 230 reaches a certain temperature and the water supply unit 210 requires water supply, the water supply circulation pump 221 is operated to bring the hot water to each water supply unit 210.

Optionally, as shown in fig. 1 and 4, the multi-unit parallel heating water supply system 1000 further includes a cold water source 700, the cold water source 700 is communicated with the cold water end 211 of each water supply unit 210, and the cold water source 700 is communicated with the water storage container 230 to supply water to the water storage container 230. When the water supply part 210 is in use, the cold water source 700 supplies water to the water storage container 230 synchronously, so as to ensure that the water level in the water storage container 230 is constant.

The cold water source 700 is communicated with the return pipe 122 to supply cold water to the heat source main body 100 so that the heat source main body 100 has sufficient hot water required for heating.

The cold water source 700 is communicated with the heating device 300 to replenish water for the heating device 300. In the operation of the heating apparatus 300, since the water of each heating unit 310 is consumed, the cold water source 700 supplies water to the heating apparatus 300, thereby stably heating.

Optionally, a filter is disposed on each pipeline connected to the cold water source 700 to filter out impurities and improve the quality of the inlet water.

Alternatively, the cold water source 700 may be tap water or intermediate water stored in a storage tank.

Alternatively, a temperature sensor may be disposed in the water storage container 230, and when it is detected that the water temperature in the water storage container 230 is outside the preset temperature threshold, the second heat supply circulation pump 241 is controlled to operate and heat the water in the water storage container 230, so as to ensure that the water temperature in the water storage container 230 is within the preset temperature range.

In some embodiments of the present invention, as shown in fig. 1 and 4, the multiple parallel heating and water supply system 1000 further includes a control system 800, the control system 800 connects the heat source main body 100, the water supply device 200 and the heat supply device 300, and the control system 800 controls the heat source main body 100 to turn on a corresponding number of hot water devices 110 to supply heat according to a heat load required by the water supply device 200 and/or according to a heat load required by the heat supply device 300, so that each of the heat supply device 300 and the water supply device 200 can operate normally without interference. After the installation and debugging are finished, the automatic operation can be realized, the personnel watching is not needed, the labor is saved, and the centralized automatic control can be realized.

Optionally, in the control system 800, the total time used by each hot water unit 110 and the fault condition are recorded, and the option of each start-up is adjusted according to the record to ensure that the service time of each hot water unit 110 is basically even, and the fault product is removed from being started.

Optionally, while the hot water apparatus 110 heats, the control system 800 may continuously adjust the number of the turned on hot water apparatuses 110, the heat load of each hot water apparatus 110, and the outlet water temperature according to the change of the water flow and the temperature change, so as to ensure that the outlet water temperature is constant.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Eight hot water apparatuses 110 are shown in fig. 1 for illustrative purposes, but it is obvious to those skilled in the art after reading the above technical solutions that the solution can be applied to other numbers of hot water apparatuses 110, which also falls within the protection scope of the present invention.

Other configurations of the multiple parallel heating water supply system 1000 according to the embodiment of the present invention, such as the circulation principle of hot water and the electric control principle, are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (18)

1. A multi-unit parallel heating water supply system is characterized by comprising:

the heat source main body comprises a plurality of hot water devices, a water outlet pipe and a water return pipe, wherein the hot water devices, the water outlet pipe and the water return pipe are arranged in parallel;

the connecting device is respectively connected with the water outlet pipe and the water return pipe to form a main cycle;

and the water supply device and the connecting device form a first heat exchange cycle, and the main cycle is not communicated with the waterway of the first heat exchange cycle.

2. The multi-unit parallel heating water supply system according to claim 1, further comprising:

and the heat supply device and the connecting device form a second heat exchange cycle.

3. A multi-unit parallel heating water supply system as claimed in claim 2, wherein the connecting means comprises a first connecting means and a second connecting means connected in series, one end of the first connecting means being connected to the outlet pipe, and the other end of the second connecting means being connected to the return pipe.

4. A multi-unit parallel heating and water supplying system as claimed in claim 2, wherein the connecting device comprises a first connecting device and a second connecting device connected in parallel, the water outlet pipe is connected with the first connecting device and the second connecting device respectively, and the other ends of the second connecting device and the first connecting device are connected with the water return pipe.

5. The multiple unit parallel heating water supply system according to claim 3 or 4, wherein the first heat exchange cycle is formed between the water supply device and the first connection device; and the second heat exchange cycle is formed between the heat supply device and the second connecting device.

6. The multiple unit parallel heating water supply system of claim 5, wherein the first connecting means is a first heat exchanger and the second connecting means is a second heat exchanger or a decoupling tank.

7. The system of claim 4, further comprising a three-way valve, wherein the first and second connectors are connected in parallel via the three-way valve, and the three-way valve is connected to the outlet pipe, the first connector and the second connector, respectively.

8. The system of claim 7, wherein the three-way valve is adapted to communicate with the outlet pipe and the first connection device, or communicate with the outlet pipe and the second connection device, respectively.

9. A multiple unit parallel heating water supply system as claimed in claim 7 wherein the three way valve regulates the flow of excess water through each of the passageways and water in the outlet pipe can flow simultaneously through the three way valve to the first and second connections.

10. The multi-unit parallel heating water supply system as set forth in claim 5, wherein the heating means further comprises: a plurality of heat supply portions, heat supply inlet tube and heat supply outlet pipe, every heat supply portion all with the heat supply inlet tube heat supply outlet pipe intercommunication, the heat supply inlet tube with the heat supply outlet pipe all with the second connecting device is connected.

11. A multi-unit parallel heating water supply system as claimed in claim 10, wherein the heating apparatus further comprises a first circulating heat exchange pipe, at least one water separator and at least one water collector, the first circulating heat exchange pipe can exchange heat in the second connecting apparatus, a hot water end of the first circulating heat exchange pipe is communicated with each water separator through the heating water inlet pipe, a cold water end of the first circulating heat exchange pipe is communicated with each water collector through the heating water outlet pipe, the water separator is communicated with a water inlet end of each heating section, and the water collector is communicated with a water outlet end of each heating section.

12. A multiple unit parallel heating water supply system as claimed in claim 11, wherein the heating apparatus further comprises a first heating circulation pump provided on the first circulation heat exchanging pipe.

13. The system for supplying heating and water heating system connected in parallel to a plurality of units according to claim 5, wherein the water supply device includes a plurality of water supply units and a main water supply pipe, and the plurality of water supply units are connected to the first connection device through the main water supply pipe.

14. The multi-unit parallel heating and water supplying system according to claim 13, wherein the water supplying device further comprises a water storage container and a second circulating heat exchanging pipe, both ends of the water supplying main pipe are respectively connected with the water storage container, and the water storage container is connected with the first connecting device through the second circulating heat exchanging pipe and exchanges heat.

15. A multi-unit parallel heating and water supplying system as claimed in claim 14, wherein the water supplying means further comprises a water supplying circulating pump and a second heating circulating pump, the water supplying circulating pump is provided on the water supplying main pipe, and the second heat exchanging circulating pump is provided on the second circulating heat exchanging pipe.

16. The system of claim 15, further comprising a cold water source, wherein the cold water source is connected to the cold water end of each water supply unit, the cold water source is connected to the water storage container to supply water to the water storage container, the cold water source is connected to the water return pipe to supply cold water to the heat source body, and the cold water source is connected to the heat supply device to supply water to the heat supply device.

17. The multi-unit parallel heating water supply system according to claim 1, wherein the hot water device is a single heating type gas heating water heater or a gas water heater.

18. A multi-unit parallel heating water supply system as claimed in claim 2, further comprising a control system, wherein the control system connects the heat source main body, the water supply device and the heat supply device, and the control system controls the heat source main body to turn on a corresponding number of hot water devices to supply heat according to the heat load required by the water supply device and/or according to the heat load required by the heat supply device.

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