CN217520066U - Lower heating hot water pipeline and system of multi-storey building - Google Patents

Abstract

The lower heating hot water pipeline of the multi-storey building mainly comprises a hot water supply main pipe connected with an external hot water source and arranged inside the multi-storey building, a plurality of floor hot water branch pipe assemblies with opposite ends respectively communicated with the hot water supply main pipe and water using devices inside the multi-storey building, a layered water return pump arranged in the floor hot water branch pipe assemblies and the like. And the layered water return pump is used for returning hot water in the corresponding floor hot water branch pipe assembly to the water return pipeline assembly and then returning the hot water to the hot water source when the layered water return pump is started. Compared with the prior art, the water outlet temperature of each water device can be better guaranteed so as to improve the experience degree of a user.

Description

Lower heating hot water pipeline and system of multi-storey building

Technical Field

The utility model relates to a building decoration field especially relates to a lower heating hot water pipeline and system of multilayer building.

Background

With the development of cities, the demand of people for improving the quality of life is increasing, and particularly, the experience requirement of living facilities such as hot water pipelines in houses is higher and higher.

In general, in large flat-storey and multi-storey buildings, such as large house villas, in order to shorten the hot water outlet time and improve the hot water experience, in the existing design, the water supply pipeline in the hot water supply system is usually connected in series with each hot water pipe and each water using device to establish an integrated hot water large circulation pipeline, however, when the hot water large circulation pipeline is used, the following defects exist: because the hot water circulation pipeline adopts the mode of establishing ties, whole length is longer, and consequently, heat loss is very big to make the hot water temperature of the position far away from the heater of hot water circulation pipeline lower, thereby make the water consuming devices of this department supply, for example the hot water temperature of bathroom shampoo is lower, has influenced the experience of bathing and has felt etc..

Therefore, how to reduce and improve a supply channel and system, can guarantee the play water temperature of each water consuming part betterly to promote user's experience degree, be the utility model discloses the technical problem who needs to solve urgently.

SUMMERY OF THE UTILITY MODEL

To above-mentioned prior art's shortcoming or not enough, the to-be-solved technical problem of the utility model is how to provide a lower heating hot water pipeline and system of multilayer building thing, can guarantee the play water temperature of each water device betterly to promote user's experience degree.

In order to solve the technical problem, the utility model provides a lower heating hot water pipeline of multilayer building, include: a hot water supply main connected to an external hot water source and installed inside the multi-story building; a plurality of floor hot water branch pipe assemblies, opposite ends of which are respectively communicated with the hot water supply main pipe and water using devices in the multi-floor building; a water return pipeline component communicated with the hot water branch pipe components on each floor; the layered water return pump is arranged in the floor hot water branch pipe assembly;

when the layered water return pump is started, hot water in the corresponding floor hot water branch pipe assembly flows back to the water return pipeline assembly and then flows back to the hot water source.

Further preferably, the water return pipeline assembly comprises: the system comprises floor water return pipes communicated with the floor hot water branch pipe assemblies, water return main pipes connected with the floor water return pipes, and water return main pipes communicated with the water return main pipes and the hot water source.

Further preferably, the method further comprises: and the circulating pump is arranged in the water return pipeline assembly and is positioned at the top area of the pipe shaft in the multi-storey building.

Further preferably, each floor hot water branch pipe assembly is provided in each floor of the multi-storey building; the floor hot water branch pipe assembly at least comprises: the hot water branch pipes are positioned in the corresponding floors and communicated with the hot water main pipes and the corresponding water using devices.

The hot water supply line further includes: and the hot water layering valves are arranged in the hot water main pipes of all the floors.

Further preferably, each hot water stratification valve is disposed adjacent to the junction of the floor hot water branch pipe assembly and the hot water supply main pipe.

Further preferably, the method further comprises the following steps: a cold water supply main pipe; a plurality of floor cold water branch pipe assemblies respectively communicated with the cold water supply main pipe; wherein the cold water supply trunk is arranged in a passage direction parallel to the piping shaft and vertically extends upward from the bottom of the piping shaft of the multi-story building.

Further preferably, when the hot water output by the hot water source reaches the corresponding water using device after passing through the hot water supply main pipe and the floor hot water branch pipe assembly, the length of the hot water pipeline passing through is a first path length; the length of a cold water pipeline which passes through the cold water main supply pipe and the floor cold water branch pipe assembly and reaches the corresponding water using device is the second path length; wherein the first path length is the same as the second path length; the number of the pipe connectors arranged on the hot water pipeline is the same as that of the pipe connectors arranged on the cold water pipeline; wherein, the pipe connector is a tee or a connecting elbow.

Further preferably, the diameter of the pipe of the water return pipe assembly is smaller than that of the hot water supply main pipe 1; and the diameter of the pipeline of the water return pipeline component is less than or equal to DN 20.

Further preferably, the water using device comprises: a plurality of first devices which are simultaneously communicated with the floor hot water branch pipe assembly and the floor cold water branch pipe assembly; a plurality of second devices which are independently communicated with the floor cold water branch pipe assemblies; the first device includes: any one or the combination of a mop pool, a closestool, a water closet and a washing machine; the second device includes: any one or the combination of a shower head, a bathtub faucet, a sink faucet and a washbasin faucet.

Further preferably, the multi-storey building is a villa or an apartment.

The present application further provides a system comprising: a lower heating hot water pipeline of the multi-story building; a hot water source for supplying hot water to the hot water supply main.

Further preferably, the hot water source is a hot water supply source provided in a low-rise area inside a multi-story building or an external hot water supply source; wherein the hot water supply source includes: a heater communicated with the water return main pipe, the hot water supply main pipe and the cold water supply main pipe; and a master valve disposed adjacent to the heater and controlling on/off of the hot water supply main, the cold water supply main, and the return pipe assembly.

Compared with the prior art, the lower heating hot water pipeline and the system of the multi-storey building can better guarantee the water outlet temperature of each water-consuming device so as to improve the experience degree of users.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1: the structure of the lower heating hot water pipeline of the multi-storey building in the first embodiment of the utility model is shown schematically;

FIG. 2: the utility model discloses the circulation flow direction schematic diagram of the hot water pipeline in the first embodiment;

FIG. 3: the second embodiment of the present invention is a schematic structural diagram of a lower hot water heating pipeline of a multi-story building.

Detailed Description

The conception, the specific structure and the technical effects produced by the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Example one

The present embodiment provides a lower hot water heating pipeline of a multi-storey building, as shown in fig. 1, the lower hot water heating pipeline of the multi-storey building is mainly composed of a hot water supply main pipe 1 connected with an external hot water source and arranged inside the multi-storey building, a plurality of floor hot water branch pipe assemblies with opposite ends respectively communicated with the hot water supply main pipe 1 and water using devices inside the multi-storey building, a return pipeline assembly communicated with each floor hot water branch pipe assembly and the heater 10, and a layered return water pump arranged in the floor hot water branch pipe assemblies.

And the layered water return pump is used for returning hot water in the corresponding floor hot water branch pipe assembly to the water return pipeline assembly and then returning the hot water to the hot water source when the layered water return pump is started.

The above results show that: the water supply pipeline can realize the independent supply of hot water for the water using devices in each floor, so as to replace the pipeline structure of the water using devices in a multi-floor building adopting one-way large circulation series connection in the prior art, the whole hot water can reach the target water using device without flowing through the whole pipeline, and because the water supply pipeline can also independently open the corresponding layered water return pump according to the water temperature condition in each floor hot water branch pipe assembly when needed, for example, when the water temperature in the corresponding floor hot water branch pipe assembly is lower, the layered water return pump in the floor hot water branch pipe assembly is opened to pump the water temperature in each floor hot water branch pipe assembly back to the water return pipeline assembly and then back to the hot water source, thereby ensuring that the water temperature in each floor hot water branch pipe assembly keeps proper temperature, and further ensuring the water outlet temperature of the water using devices communicated with each floor hot water branch pipe assembly, be unlikely to low excessively, after the short time goes out water, its temperature can satisfy normal user demand to avoid local area to appear that low temperature water is long surplus, easily lead to the actual overlength of going out water of water device, therefore promoted user's experience degree.

In particular, in order to allow the water usage devices of the various floors of a multi-storey building to independently access the hot water source, the various floor hot water branch pipe assemblies are located in the various floors of the multi-storey building, respectively. The floor hot water branch pipe assembly at least comprises: the hot water system comprises a floor hot water main pipe positioned in each floor, a floor hot water branch pipe positioned in the corresponding floor and communicated with the floor hot water main pipe and the corresponding water using device, and a hot water layering valve arranged in each floor hot water branch pipe assembly. Through the structure and the control of the corresponding hot water layered valve, hot water supplied from the water heater to each water using device only needs to flow through part of the hot water supply main pipe, the corresponding floor hot water main pipe and the floor hot water branch pipe, and when the water temperature in part of the floor hot water branch pipes is too low, the hot water layered valve in each floor hot water branch pipe assembly can be closed, so that the hot water layered valve in the floor hot water branch pipe assembly is opened, low-temperature water in the floor hot water branch pipes can be pertinently returned to a hot water source, and new hot water with proper temperature is supplemented through the floor hot water main pipe, therefore, the pipeline flowing through the whole process is short, so that the heat and power loss caused by the hot water flowing along the pipeline is much less, the temperature drop is small, the water pressure has enough guarantee, the energy is saved, and the water temperature output by each water using device is higher, the water consumption experience of users can be greatly improved according to different water requirements, such as requirements of warm water hand washing, face washing, dish washing or bath and the like.

The number of the hot water layering valves is the same as that of the floor hot water main pipes in the floor hot water branch pipe assemblies. Through this structure for any place need use hydrothermal water device or pipeline to overhaul and do not influence other regional water device or pipeline and supply water, consequently, overhaul the convenience, alleviate the life interference to the owner.

In detail, the hot water stratification valve may specifically refer to the hot water stratification valve 71 located in the first floor, the hot water stratification valve 72 located in the second floor, the hot water stratification valve 73 located in the third floor, and the like described in fig. 1.

Further preferably, the number of the stratified water return pumps is the same as the number of the floor hot water main pipes in the floor hot water branch pipe assembly.

Further preferably, a stratified water return pump is installed at the end of each floor hot water main pipe, such as the stratified water return pump 81 located at the end of the first floor hot water main pipe 11, the stratified water return pump 82 located at the end of the second floor hot water main pipe 21, and the stratified water return pump 83 located at the end of the third floor hot water main pipe 31 in fig. 1, so that the circulation of hot water in each floor can be individually controlled by individually turning on each stratified water return pump, so that hot water circulates only at a required floor, and thus a better energy saving effect can be obtained.

In detail, the return water pipe assembly in this embodiment includes: the system comprises floor water return pipes communicated with the floor hot water branch pipe assemblies, a water return main pipe 3 connected with the floor water return pipes, and a water return main pipe 4 communicated with the water return main pipe 3 and the hot water source. Through the cooperation of floor wet return and return water main pipe 3 for under the effect of layering water pump, can form an independent and confined one-way return circuit between floor wet return and return water main pipe 3 and the hot water source, when needs, can flow back the low temperature hot water among each floor hot water main pipe as far as possible to the heater and heat, then carry again to the floor hot water main pipe, thereby guarantee that the hot water in each floor hot water main pipe keeps suitable temperature.

In order to meet the assembly and maintenance requirements in practical application, each hot water stratification valve is preferably arranged adjacent to the connection between the floor hot water branch pipe assembly and the hot water main supply pipe 1.

Further preferably, in order to meet design and installation requirements in practical applications, the floor hot water main pipe at least comprises: the first floor hot water main pipe 11, the second floor hot water main pipe 21 and the third floor hot water main pipe 31 are arranged in each floor from bottom to top in sequence; the floor hot water branch pipe at least comprises: at least two first-floor hot water branch pipes 111 communicated with the first-floor hot water main pipe 11, at least two second-floor hot water branch pipes 211 communicated with the second-floor hot water main pipe 21, and at least two third-floor hot water branch pipes 311 communicated with the third-floor hot water main pipe 31. Here, the number of floors of the multi-storey building in the present embodiment is described by taking only three floors as an example, but in practical application, the number of floors may be other numbers such as two floors, four floors, and the like.

Further preferably, the lower heating hot water pipeline of the multi-storey building further comprises: a cold water supply main pipe 2; and the floor cold water branch pipe assemblies are respectively communicated with the cold water supply main pipe 2. Wherein the cold water supply main pipes 2 are arranged in a passage direction parallel to the piping shaft and vertically extend upward from the bottom of the piping shaft of the multi-story building.

Through the structure, the connecting position of the cold water supply main pipe 2 for introducing cold water and the position of hot water output by the hot water source are positioned at the same height, so that the hot water pressure obtained by the hot water supply main pipe 1 is the same as the supply water pressure of the cold water supply main pipe, and a foundation guarantee is provided for cold and hot water pressure balance. Here, as shown in fig. 1, in the present embodiment, the flow of cold water is indicated by a dotted arrow, and the flow of hot water is indicated by a solid arrow.

Further preferably, the floor cold water branch pipe assembly includes: the first floor cold water main pipe 12, the second floor cold water main pipe 22 and the third floor cold water main pipe 32 are arranged in each floor from bottom to top in sequence; the floor cold water branch pipe assembly further comprises: at least two first-floor cold water branch pipes 121 communicated with the first-floor cold water main pipe 12, at least two second-floor cold water branch pipes 221 communicated with the second-floor cold water main pipe 22, and at least two third-floor cold water branch pipes 321 communicated with the third-floor cold water main pipe 32.

In addition, the present embodiment provides the hot water supply line of a multi-story building further including: and the control device is in communication connection with each layered water return pump, such as a PLC (programmable logic controller), an industrial personal computer and the like, so as to remotely control each layered water return pump.

The lower heating hot water pipeline of the multi-storey building further comprises: and the cold water layering valves are arranged in the cold water branch pipe assemblies of all floors, so that the pipelines can be conveniently overhauled. The cold water layer valve may specifically refer to the cold water layer valve 61 located in the first floor, the cold water layer valve 62 located in the second floor, the cold water layer valve 63 located in the third floor, and the like described in fig. 1. In addition, in order to meet the assembly and maintenance requirements in practical application, each cold water layered valve is preferably arranged near the connection position of the cold water branch pipe assembly of the floor and the cold water supply main pipe 2. The number of the cold water layering valves is the same as that of the floor cold water main pipes in the floor cold water branch pipe assemblies. Through the structure, any water using device or pipeline maintenance does not influence water supplying of water using devices or pipelines in other areas, so that the maintenance is convenient, and the interference to the life of an owner is reduced.

Further preferably, the hot water supply main 1 and the cold water supply main 2 are parallel to each other and have the same diameter; the floor hot water branch pipe assembly and the floor cold water branch pipe assembly are parallel to each other and have the same diameter. Because the hot water pipeline and the cold water pipeline have the same flowing water flow direction and the same length, before the hot water and the cold water respectively reach the corresponding water using devices, the friction contact time and the friction force applied to the hot water and the cold water in the pipelines are approximately the same, so that the water pressure loss is approximately the same, the pressure difference between the hot water and the cold water reaching the corresponding water using devices is relatively small, particularly the pressure of the hot water and the cold water of the water using device F1 far away from a heater is kept consistent as much as possible, the hot water pressure balance is realized, the mixed water temperature is conveniently adjusted to a proper temperature, the water pressure of the mixed hot water and the mixed cold water is relatively high, and the user experience is further improved.

Further preferably, when the hot water output by the hot water source reaches the corresponding water using device after passing through the hot water supply main pipe 1 and the floor hot water branch pipe assembly, the length of the hot water pipeline passing through is a first path length; the length of a cold water pipeline passing through when cold water introduced by the cold water supply main pipe 2 passes through the cold water supply main pipe 2 and the floor cold water branch pipe assemblies and reaches the corresponding water utilization device is a second path length; wherein the first path length is the same as the second path length.

Further preferably, the number of the pipe connectors installed on the hot water pipeline is the same as the number of the pipe connectors installed on the cold water pipeline; wherein, the pipe connector is a tee or a connecting elbow. According to the above, the following contents are: because the hot water pipeline and the cold water pipeline have the same flowing direction and the same length, and the number of pipe connectors such as a tee joint or a connecting elbow and the like arranged on the hot water pipeline and the cold water pipeline is also the same, the frictional contact time of the hot and cold water with the inner wall of the pipe connector and the frictional force applied by the pipe connector are approximately the same before reaching the corresponding water using device, so that the loss of water pressure is approximately the same, so that the pressure difference between the hot water and the cold water reaching the corresponding water consuming devices can be minimized, especially the hot water and the cold water of the water consuming device F1 far away from the heater can be kept as uniform as possible, to realize the hot water pressure balance, thereby be convenient for adjust the temperature after the mixture to suitable temperature, and make the water pressure after hot water and cold water mixture higher, and then promote user's experience degree. It should be noted that, in the present embodiment, the same number of pipe connectors such as three-way joints or connecting elbows provided on the hot water pipeline and the cold water pipeline refers to that the number is substantially the same or substantially very close, and the difference is not much more than 3.

Further preferably, as shown in fig. 1, the floor water return pipe at least includes: a first floor water return pipe 13 communicated with the first floor hot water main pipe 11; a second floor water return pipe 23 communicated with the second floor hot water main pipe 21; and a third floor water return pipe 23 communicated with the third floor hot water main pipe 31.

Further preferably, the diameter of the pipe of the water return pipe assembly is smaller than the diameter of the pipe of the hot water supply main 1. Through the structure, the water return pipeline assembly conveys the low-temperature water in the recyclable hot water loop back to the water heater, the conveyed hot water flow is less than that of the main pipe, and therefore the heat loss is lower.

In order to meet the design and installation requirements in practical application, the diameter of the pipeline of the water return pipeline assembly is smaller than or equal to DN 20.

Further preferably, the water return line assembly includes: a plurality of steel pipes or composite pipes which are connected in sequence and have the diameter of DN15, so that the quantity of hot water flowing through the water return pipeline assembly is very small by adopting the minimum size as the pipeline of the water return pipeline assembly, and the energy consumption is reduced to the maximum extent.

Further preferably, the pipe diameter of the hot water supply main pipe 1 is larger than that of the floor hot water branch pipe assembly. So that the amount of water in the hot water main pipe 1 is sufficient to meet the water supply requirements of the hot water branch pipe assemblies of each layer.

Wherein the hot water supply main pipe 1 includes: a plurality of steel pipes or composite pipes which are connected in sequence and have the diameter of DN25 or DN 32; the floor hot water branch pipe assembly includes: a plurality of steel pipes or composite pipes which are connected in sequence and have the diameter of DN20 or DN 25.

In addition, it is worth mentioning that the diameters of the pipes of the hot water supply main pipe 1 and the cold water supply main pipe 2 are in a direct proportion relation with the number of houses of the water consumption devices arranged, and the diameters of the pipes of the hot water main pipe and the cold water main pipe of each floor are in a direct proportion relation with the houses of the water consumption devices arranged in each floor. For example, the number of toilets is selected: when the number of the toilets in the multi-storey building is 3-4, DN25 pipes are preferably used as the pipelines of the hot water supply main pipe 1 and the cold water supply main pipe 2; when the number of the toilets in the multi-storey building is 5-6, DN32 pipe is preferably used as the hot water supply main pipe 1 and the cold water supply main pipe 2; when the number of toilets in the same floor of a multi-floor building is within 2, DN20 pipes are preferably adopted as the pipelines of the floor hot water main pipe and the floor cold water main pipe; when the number of toilets in the same floor of a multi-floor building is within 3-4, DN25 pipes are preferably adopted as the pipelines of the main floor hot water pipe and the main floor cold water pipe. Here, it should be noted that fig. 1 is a schematic sectional view of a multi-story building, and therefore, the pipeline routes of the main floor hot water pipe and the main floor cold water pipe along the horizontal plane are easily straight, and may be designed into any shape such as an L shape, a bent shape, a zigzag shape, and the like according to actual circumstances, and the water using devices in different rooms on the same floor are connected to each other so as to pass through an optimum laying route.

Further preferably, the hot water supply main pipe 1, the water return main pipe 3 and the water return main pipe 4 are located in the pipe portion of the inside of the multi-story building, in the pipe well of the multi-story building; and each floor hot water main pipe in the floor hot water branch pipe assembly is hoisted inside the suspended ceiling of each floor of the multi-floor building and is coated with a hot water heat insulation sleeve.

Generally, the thermal conductivity of cement mortar walls, brick walls and the like is more than 10 times that of air, so that the hot water supply main pipe 1 and the hot water main pipes of each floor are not embedded into the walls of multi-storey buildings, and the aggravation of heat loss caused by the fact that the thermal conductivity of the walls is far larger than that of the air can be avoided, so that a good energy-saving effect can be achieved. Because above-mentioned hot water supply main pipe 1, return water are responsible for 3 and the return water main pipe 4 and all set up in the pipe-line well, and each floor hot water that corresponds is responsible for and sets up inside the furred ceiling, not only do not influence the decorative effect in the multilayer building, but also be favorable to the maintenance that above-mentioned hot water supply main pipe 1, return water are responsible for 3 and return water main pipe 4 and each floor hot water are responsible for.

In addition, it is worth mentioning that the hot water insulation jacket in the embodiment is preferably a rubber plastic protective jacket.

Further preferably, each floor hot water branch pipe of the floor hot water branch pipe assembly is embedded in a wall body of the multi-story building. Because the hot water main pipe of floor in this embodiment installs above the furred ceiling, can reduce the length of the hot water branch pipe of embedding in the wall, because it receives the restriction of room size, usually the length is only 3-5 meters, consequently, when opening the hot water valve with the water apparatus, only need 3-5 seconds can discharge the low temperature water of hot water branch pipe fast, then the velocity of flow of the suitable hot water of quick outflow temperature can reach about 1 meter per second, so it is very good to experience with the water.

Further preferably, the cold water supply mains 2 are located in a piping section inside the multi-storey building, in a piping well of the multi-storey building; and cold water main pipes of all floors in the cold water branch pipe assemblies of the floors are hoisted in suspended ceilings of all floors of the multi-floor building and are wrapped by cold water insulation sleeves.

Further preferably, the pipe diameter of the cold water supply main pipe 2 is larger than that of the cold water branch pipe assembly of the floor.

Wherein the cold water supply main pipe 2 includes: a plurality of steel pipes or composite pipes which are connected in sequence and have the diameter of DN25 or DN 32; the floor cold water branch pipe assembly comprises: a plurality of steel pipes or composite pipes which are connected in sequence and have the diameter of DN20 or DN 25.

Further preferably, the water using device comprises: a plurality of first devices which are simultaneously communicated with the floor hot water branch pipe assemblies and the floor cold water branch pipe assemblies; and the second devices are separately communicated with the floor cold water branch pipe assemblies.

Further preferably, the first device includes: any one or combination of a mop pool, a closestool, a water closet and a washing machine, and particularly, the first device D1, the first device D2 and the first device D3 which are used for representing different floors and are shown in FIG. 1; the second device includes: any one or combination of a shower head, a bathtub tap, a sink tap, a washbasin tap, and particularly referring to the second devices E1 and F1, E2 and F2, and E3 and F3 for representing different floors as shown in fig. 1.

Further preferably, the multi-storey building is a villa or an apartment.

Example two

The present embodiment provides a lower heating hot water pipeline of a multi-storey building, which is a further improvement of the above embodiment, and the improvement is that, as shown in fig. 2, the lower heating hot water pipeline further comprises: the circulating pump 8 is arranged on the water return main pipe 4, and the circulating pump 8 is arranged at the top area of the pipe shaft of the multi-storey building.

Through this overall arrangement, when making circulating pump 8 start-up, can promote hot water to flow in the circulated hot water return circuit of above-mentioned formation, because it is regional at the top, therefore it only provides less power, can promote the flow of hot water, consequently, can save power, in addition, because it sets up in the top region of piping shaft, the maintenance and the maintenance of circulating pump 8 of can being convenient for, even single layering return water pump breaks down, also do not influence the normal circulation of whole hot water supply pipeline, in order to ensure user's water.

EXAMPLE III

This embodiment provides a system comprising the lower heated hot water line of a multi-storey building of any of the embodiments above; a hot water source for supplying hot water to the hot water supply main 1.

Specifically, the hot water source in the present embodiment may preferably be a hot water supply source provided in a low-rise area inside a multi-story building or an external hot water supply source. The low-floor area can be the first floor, the second floor, the basement or the courtyard of a multi-floor building.

Wherein the hot water supply source includes: a heater communicated with the backwater main pipe 4, the hot water supply main pipe 1 and the cold water supply main pipe 2; a main valve (not shown) is disposed adjacent to the heater and controls the on/off of the hot water supply main 1, the cold water supply main 2, and the return pipe assembly.

In addition, it is worth mentioning that the water heater in the embodiment may preferentially adopt a gas water heater for heating the obtained cold water into domestic hot water so as to provide domestic hot water for water using devices in rooms such as a kitchen, a toilet or a balcony. Furthermore, since the water heater in this embodiment is not connected to the atmosphere, and can form a closed system, it is not affected by the external pollution and the external temperature, so the hot water supply system of the multi-storey building provided by this embodiment can be clean-free, maintenance-free, etc.,

further preferably, the above-mentioned main valve is disposed adjacent to the heater. For example, the main valve mainly comprises a first valve for controlling the on-off of the hot water supply main pipe 1, a second valve for controlling the on-off of the cold water supply main pipe 2, a third valve for controlling the on-off of the return water main pipe in the return water pipeline component, and the like.

The above embodiments are merely provided to illustrate the technical solution of the present invention, but not to limit the present invention, and the present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that various modifications and equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the scope of the claims of the present invention should be covered thereby.

Claims (10)

1. A lower heating hot water pipe of a multi-storey building, comprising: a hot water supply main pipe (1) connected to an external hot water source and provided inside the multi-story building; a plurality of floor hot water branch pipe assemblies, the opposite ends of which are respectively communicated with the hot water supply main pipe (1) and water using devices in the multi-floor building; a water return pipeline component communicated with the hot water branch pipe components on each floor; the layered water return pump is arranged in the floor hot water branch pipe assembly;

when the layered water return pump is started, hot water in the corresponding floor hot water branch pipe assembly flows back to the water return pipeline assembly and then flows back to the hot water source.

2. The lower heated hot water line of a multi-storey building according to claim 1, wherein the return water line assembly comprises: the floor water return pipe is communicated with the floor hot water branch pipe assembly, the water return main pipe (3) is connected with the floor water return pipes, and the water return main pipe (3) is communicated with the hot water source.

3. The lower heating hot water line of a multi-storey building according to claim 1 further comprising: and a circulation pump (8) disposed in the return pipe assembly and located at a top region of the piping shaft in the multi-story building.

4. The lower heating hot-water line of a multi-story building of claim 1, wherein each of the story hot-water branch pipe assemblies is provided in each of stories of the multi-story building, respectively; the floor hot water branch pipe assembly at least comprises: the floor hot water main pipes are positioned in all floors, and the floor hot water branch pipes are positioned in the corresponding floors and communicated with the floor hot water main pipes and the corresponding water using devices; the hot water supply line further includes: and the hot water layering valves are arranged in the hot water main pipes of all the floors.

5. Lower heating hot water line of a multistorey building according to claim 3, characterized in that each hot water stratification valve is provided adjacent to the connection of the storey hot water branch pipe assembly with the hot water supply main (1).

6. The lower heated hot water line of a multi-storey building according to claim 1 further comprising: a cold water supply main (2); a plurality of floor cold water branch pipe assemblies respectively communicated with the cold water supply main pipe (2); wherein the cold water supply main pipe (2) is arranged in a passage direction parallel to the piping shaft and vertically extends upward from the bottom of the piping shaft of the multi-story building.

7. The lower heating hot water pipe of the multistorey building according to claim 6, wherein the hot water outputted from the hot water source reaches the corresponding water using device after passing through the hot water supply trunk pipe (1) and the floor hot water branch pipe assembly, and the length of the hot water pipe passing through is a first path length; the length of a cold water pipeline which passes through when cold water introduced by the cold water supply main pipe (2) passes through the cold water supply main pipe (2) and the floor cold water branch pipe assembly and reaches the corresponding water using device is a second path length; wherein the first path length is the same as the second path length; the number of the pipe connectors arranged on the hot water pipeline is the same as that of the pipe connectors arranged on the cold water pipeline; wherein the pipe connector is a tee or a connecting elbow; the diameter of the pipeline of the water return pipeline component is smaller than that of the hot water supply main pipe (1); and the diameter of the pipeline of the water return pipeline component is less than or equal to DN 20.

8. The lower heated hot water line of a multi-storey building according to claim 1, wherein the water using means comprises: a plurality of first devices which are simultaneously communicated with the floor hot water branch pipe assemblies and the floor cold water branch pipe assemblies; a plurality of second devices which are independently communicated with the floor cold water branch pipe assemblies; the first device includes: any one or the combination of a mop pool, a closestool, a water closet and a washing machine; the second device includes: any one or the combination of a shower head, a bathtub faucet, a sink faucet and a washbasin faucet; the multi-storey building is a villa or an apartment.

9. A system, comprising: a lower heating hot water line of a multi-storey building according to any one of claims 1 to 8; a hot water source for supplying hot water to the hot water supply main (1).

10. The system of claim 9, wherein the hot water source is a hot water supply source of a low-floor area provided inside a multi-story building or an external hot water supply source; wherein the hot water supply source comprises: the heater (10) is communicated with a water return main pipe (4) of the water return pipeline component, the hot water supply main pipe (1) and a cold water supply main pipe (2) of the lower heating hot water pipeline; and a main valve (9) which is arranged adjacent to the heater (10) and is used for controlling the on-off of the hot water supply main pipe (1), the cold water supply main pipe (2) and the water return pipeline component.

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