CN113983542A - Energy-saving hot water circulating system constructed by double-layer pipes - Google Patents
Energy-saving hot water circulating system constructed by double-layer pipes Download PDFInfo
- Publication number
- CN113983542A CN113983542A CN202111539532.9A CN202111539532A CN113983542A CN 113983542 A CN113983542 A CN 113983542A CN 202111539532 A CN202111539532 A CN 202111539532A CN 113983542 A CN113983542 A CN 113983542A
- Authority
- CN
- China
- Prior art keywords
- hot water
- pipe
- pipe fitting
- fitting
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The invention discloses an energy-saving hot water circulating system constructed by double-layer pipes, which comprises a hot water trunk pipe fitting and a hot water branch pipe fitting, wherein the hot water trunk pipe fitting and the hot water branch pipe fitting respectively comprise a hot water inner pipe and a hot water outer pipe; one end of a hot water inner pipe in the hot water branch pipe fitting is communicated with a hot water inner pipe in the hot water main pipe fitting, and the other end of the hot water inner pipe in the hot water branch pipe fitting is provided with a hot water control valve; one end of a hot water outer pipe in the hot water branch pipe fitting is communicated with a hot water outer pipe in the hot water main pipe fitting, and a sealed state is formed between the other end of the hot water outer pipe in the hot water branch pipe fitting and a hot water inner pipe in the hot water branch pipe fitting; and a backwater through hole is formed in the side wall of the hot water inner pipe in the hot water branch pipe fitting, the hot water inner pipe in the hot water branch pipe fitting is communicated with the hot water outer pipe in the hot water branch pipe fitting through the backwater through hole, and a backwater control valve is arranged in the backwater through hole.
Description
Technical Field
The invention relates to the field of daily life, in particular to an energy-saving hot water circulating system constructed by double-layer pipes.
Background
The hot water supply of the traditional resident family is generally directly led out of a hot water pipe from a water heater, and because certain space difference exists between the hot water using places of a washroom, a laundry, a kitchen and the like and the installation position of the water heater, the cold water remained in the pipeline needs to be drained before the hot water reaching a specific temperature is used, and the defects of long cold water draining time, water resource waste and the like exist. Therefore, in the scene of complex water pipe networks such as large suites, villas, high-grade hotels, common public buildings and the like, hot water circulation systems are often formed by adopting hot water circulation pumps. The system generally comprises a cold water pipeline 1, a hot water pipeline 2 and a water return pipeline 3 (as shown in fig. 1), wherein the hot water pipeline 2 and the water return pipeline 3 form a circulating pipeline; although the defects of water resource waste and inconvenient use of hot water caused by cold water remaining in the pipe can be overcome, a large amount of energy is wasted due to the fact that heat exchange exists between a hot water pipeline and the surrounding environment all the time.
Relevant researches show that the energy consumption of pipelines of hot water circulation systems in public buildings such as large villas and hotels is more than 3 times of the energy consumption of the actually used hot water. In recent years, along with the improvement of the living standard of people, more than 30% of families in the coastal region of southeast select a hot water circulation supply system in the decoration process, and the proportion is rapidly promoted in the future, so that the energy utilization efficiency of hot water supply systems of residential buildings and other public buildings is improved, and the hot water circulation supply system has very important significance for realizing energy conservation and emission reduction in the fields of buildings and residents' lives, and assisting the people to fully finish the goals of carbon peak reaching, carbon neutralization and China.
Disclosure of Invention
The invention aims to solve the problems and provides an energy-saving hot water circulating system which is constructed by double-layer pipes and has a simple structure and is installed quickly.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an energy-saving hot water circulating system constructed by double-layer pipes comprises a hot water main pipeline pipe fitting and a plurality of hot water branch pipeline fittings, wherein one ends of the plurality of hot water branch pipeline fittings are communicated with the hot water main pipeline pipe fitting; the hot water main pipeline and the hot water branch pipeline respectively comprise a hot water inner pipe and a hot water outer pipe, and the hot water inner pipe is sleeved on the inner side of the hot water outer pipe; one end of a hot water inner pipe in the hot water branch pipe fitting is communicated with a hot water inner pipe in the hot water main pipe fitting, and the other end of the hot water inner pipe in the hot water branch pipe fitting is provided with a hot water control valve; one end of a hot water outer pipe in the hot water branch pipe fitting is communicated with a hot water outer pipe in the hot water main pipe fitting, and a sealed state is formed between the other end of the hot water outer pipe in the hot water branch pipe fitting and a hot water inner pipe in the hot water branch pipe fitting; and a backwater through hole is formed in the side wall of the hot water inner pipe in the hot water branch pipe fitting, the hot water inner pipe in the hot water branch pipe fitting is communicated with the hot water outer pipe in the hot water branch pipe fitting through the backwater through hole, and a backwater control valve is arranged in the backwater through hole.
Furthermore, the backwater through hole is arranged on the side wall of one end of the hot water inner pipe in the hot water branch pipe fitting, which is far away from the hot water main pipe fitting.
Furthermore, a temperature control switch is arranged on the inner wall of one end, far away from the hot water main line pipe fitting, of the hot water inner pipe in the hot water branch pipe fitting, and the temperature control switch is electrically connected with the return water control valve and the hot water control valve respectively.
Furthermore, one end of a hot water inner pipe in the hot water main pipe fitting is in a blocking state, and the other end of the hot water inner pipe in the hot water main pipe fitting is communicated with a hot water outlet of hot water equipment; the two ends of the hot water outer pipe in the hot water main pipeline fitting are in a blocking state with the hot water inner pipe in the hot water main pipeline fitting; the outside of hot water outer tube in the hot water main road pipe fitting is provided with the wet return, and the one end of wet return is linked together with the hot water outer tube inside in the hot water main road pipe fitting, and the other end of wet return is linked together with hot water equipment's cold water return mouth.
Further, energy-saving hot water circulating system still includes cold water trunk line pipe fitting and a plurality of cold water branch road pipe fitting, and a plurality of cold water branch road pipe fitting sets up with a plurality of hot water branch road pipe fitting is corresponding respectively, and the one end of a plurality of cold water branch road pipe fitting all is linked together with cold water trunk line pipe fitting, and the other end and the corresponding hot water branch road pipe fitting of a plurality of cold water branch road pipe fitting set up side by side.
Furthermore, the energy-saving hot water circulating system also comprises a water outlet faucet, wherein a hot water inlet port of the water outlet faucet is communicated with the hot water control valve, and a cold water inlet port of the water outlet faucet is communicated with the cold water control valve arranged at the end of the cold water branch pipe fitting.
Furthermore, the energy-saving hot water circulation system further comprises a water outlet controller, and the water outlet controller is respectively connected with the hot water control valve and the cold water control valve.
Furthermore, a connecting support piece for improving the structural stability is arranged between the outer side wall of the hot water inner pipe of the hot water main pipeline pipe fitting and the inner side wall of the hot water outer pipe of the hot water main pipeline pipe fitting and/or between the outer side wall of the hot water inner pipe of the hot water branch pipeline fitting and the inner side wall of the hot water outer pipe of the hot water branch pipeline fitting.
Compared with the prior art, the invention has the advantages and positive effects that:
1. the double-layer pipe type water heater adopts a double-layer pipe design structure, the inner pipe in the double-layer pipe is used as a hot water pipeline, and the outer pipe in the double-layer pipe is used as a water return pipeline, so that compared with a traditional pipeline arrangement mode, the double-layer pipe type water heater is simpler in pipe arrangement structure, faster in pipe arrangement operation and convenient to arrange and operate the hot water pipeline;
2. the outer pipe in the invention can play a role in preserving heat of the hot water in the inner pipe, and the heat exchange rate of the hot water in the inner pipe to the outside is reduced, so that the energy consumption of the hot water circulating system is reduced, and the use effect of the hot water circulating system is improved;
3. the outer pipe can protect the inner pipe, the inner pipe is prevented from being damaged by external factors, and meanwhile when the inner pipe is damaged and leaked, water flow in the inner pipe can flow into hot water equipment again through the outer pipe, so that water resource waste is avoided, and the using effect of the water heater is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a diagram of a prior art piping arrangement;
FIG. 2 is a piping layout of the present invention;
FIG. 3 is a diagram of the connection structure of the hot water main pipe and the hot water branch pipe in the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3;
fig. 5 is a sectional view showing the structure of the hot water main pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art without any creative effort, should be included in the protection scope of the present invention.
As shown in fig. 2 to 5, the embodiment discloses an energy-saving hot water circulation system constructed by double-layer pipes, which includes a hot water main pipe 4 and a plurality of hot water branch pipe fittings 5, wherein one ends of the plurality of hot water branch pipe fittings 4 are communicated with the hot water main pipe fitting 5; the hot water main pipe fitting 4 comprises a hot water inner pipe 402 and a hot water outer pipe 401; the hot water branch pipe fitting 5 comprises a hot water inner pipe 502 and a hot water outer pipe 501; the hot water inner pipe 402/520 is sleeved on the inner side of the hot water outer pipe 401/501;
one end of a hot water inner pipe 502 in the hot water branch pipe fitting is communicated with the hot water inner pipe 402 in the hot water main pipe fitting, and the other end of the hot water inner pipe 502 in the hot water branch pipe fitting is provided with a hot water control valve 10; one end of a hot water outer pipe 501 in the hot water branch pipe fitting is communicated with a hot water outer pipe 401 in the hot water main pipe fitting, and a sealing state is formed between the other end of the hot water outer pipe 501 in the hot water branch pipe fitting and a hot water inner pipe 502 in the hot water branch pipe fitting; a backwater through hole 5021 is arranged on the side wall of the hot water inner pipe 502 in the hot water branch pipe fitting, the hot water inner pipe 502 in the hot water branch pipe fitting is communicated with the hot water outer pipe 501 in the hot water branch pipe fitting through the backwater through hole 5021, and a backwater control valve 9 is arranged in the backwater through hole 5021; the backwater through hole 5021 is arranged on the side wall of one end of the hot water inner pipe 502, far away from the hot water main pipe 4, in the hot water branch pipe fitting.
One end of a hot water inner pipe 402 in the hot water main pipe fitting is in a blocking state, and the other end of the hot water inner pipe 402 in the hot water main pipe fitting is communicated with a hot water outlet of hot water equipment; the two ends of the hot water outer pipe 401 in the hot water main pipe fitting are blocked with the hot water inner pipe 402 in the hot water main pipe fitting; the outside of hot water outer tube 401 in the hot water main pipe fitting is provided with return pipe 8, and the one end of return pipe 8 is linked together with hot water outer tube 401 in the hot water main pipe fitting is inside, and the other end of return pipe 8 is linked together with the cold water return mouth of hot water equipment.
The inner wall of one end, away from the hot water main pipe fitting 4, of the hot water inner pipe 502 in the hot water branch pipe fitting is provided with a temperature control switch 11, and the temperature control switch 11 is electrically connected with the return water control valve 9 and the hot water control valve 10 respectively.
When the hot water inner pipe is enabled to discharge water, the temperature control switch can detect the temperature in the hot water inner pipe firstly, when the temperature does not meet the requirement, the temperature control switch can open the water return control valve and close the hot water control valve, and at the moment, the water flowing in the hot water inner pipe can flow into the outer pipe from the water return through hole and flow back to the hot water equipment along the outer pipe; when the temperature control switch detects that the temperature in the hot water inner pipe meets the requirement, the temperature control switch closes the return water control valve and opens the hot water control valve, and the water flow in the hot water inner pipe flows out from the end head of the hot water inner pipe, so that the hot water supply operation is realized;
energy-saving hot water circulating system still includes cold water trunk line pipe fitting 6 and a plurality of cold water branch pipe fitting 7, and a plurality of cold water branch pipe fitting 7 sets up with a plurality of hot water branch pipe fitting 5 is corresponding respectively, and the one end of a plurality of cold water branch pipe fitting 7 all is linked together with cold water trunk line pipe fitting 6, and the other end of a plurality of cold water branch pipe fitting 7 sets up side by side with corresponding hot water branch pipe fitting 5.
The energy-saving hot water circulating system also comprises a water outlet faucet, wherein a hot water inlet port of the water outlet faucet is communicated with the hot water control valve 10, and a cold water inlet port of the water outlet faucet is communicated with a cold water control valve arranged at the end head of the cold water branch pipe fitting 7.
The energy-saving hot water circulation system further comprises a water outlet controller, and the water outlet controller is respectively connected with the hot water control valve 10 and the cold water control valve.
The water outlet faucet is a mixed water outlet valve, when the water outlet faucet is used for carrying out hot water supply operation, the water outlet controller can detect the opening state of the hot water control valve, and when the hot water control valve is in the opening state, the water outlet controller can control the cold water control valve to be opened to carry out hot water and cold water mixing operation; the invention avoids the situation that cold water is completely discharged and wasted when hot water is not supplied, and improves the using effect of the invention.
A connecting support 12 for improving structural stability is arranged between the outer side wall of the hot water inner pipe 402/502 and the inner side wall of the hot water outer pipe 401/501. Connecting support piece can improve the connection structure steadiness between hot water inner tube and the hot water outer tube, prevents that deformation phenomenon from appearing in hot water inner tube, hot water outer tube, can set up the through hole on the connecting support piece in order to make the clearance between hot water outer tube and the hot water inner tube be whole circulation state.
The invention replaces the conventional PPR water pipe used in indoor water pipe networks of the existing residential buildings and the conventional public buildings by developing a novel polypropylene tri-type (PPR) double-layer continuous pipe with an inner pipe made of heat insulation materials. Aiming at the blank of the application of double-layer pipes in the field of buildings at present, the problems of unclear thermophysical characteristics such as the sizes, materials, heat conductivity coefficients and the like of inner and outer pipes of the double-layer pipes and the thermodynamic mechanics of a flow field in a water pipe network of a residential/public building are solved by researching the heat transfer and mass transfer characteristics and models of the double-layer continuous pipes under different influence factors (geometric factors, medium factors and flow field factors); aiming at the problems of water resource waste, excessive energy consumption of pipeline retention of a hot water circulation system, heat energy loss and the like in the existing building water pipe network, the flow and heat transfer model of the hot water single-pipe water circulation system constructed by double-layer continuous pipes is optimized and a comprehensive energy consumption analysis test method is established by controlling different system physical parameters, so that the energy-saving and water-saving target of the hot water circulation system is realized, a solid foundation is laid for the intellectualization, water-saving and energy-saving reconstruction of cold/hot water pipe systems of residential buildings and even public buildings, and the method has important theoretical significance and practical value.
According to the invention, a continuous double-layer pipe flow test device (the ratio of the continuous double-layer pipe flow test device to a common household water pipe network is 1: 1) is built, and meanwhile, the installation pipeline of the test device is taken as a simulation object, so that the numerical simulation research on the thermodynamic characteristics of the fluid in the PPR double-layer pipe is carried out. The three-dimensional modeling adopts a CAD (computer-aided design) or ANSYS (American society for plant system) module, the grid division adopts GAMBT (gamma-ray machine tool) or ICEM (integrated computer systems) software, and the numerical calculation adopts Fluent 17.0; selecting a model: RANS model, Euler (single fluid). And selecting a certain test working condition to set a calculation boundary condition, and comparing the calculation boundary condition with a test result to verify the correctness of the model. On the basis, variable working condition calculation of different influence factors (geometric factors, medium factors and flow field factors) is carried out to obtain the heat transfer characteristics, fluid flow velocity distribution, pressure loss characteristics and the like of the pipeline section, wherein the variable working condition calculation specifically comprises the influence of the pipe diameters of the inner pipe and the outer pipe of the double-layer pipe, the heat conductivity coefficient, the surface roughness of the pipe and the related physical characteristics on the heat and mass transfer characteristics of the fluid in the pipe; the influence of the density, dynamic viscosity, inlet pressure, temperature difference with the environment and pipeline length of the flowing medium on the flowing characteristic and heat transfer characteristic of the fluid in the continuous double-layer pipe; the influence of factors such as a water inlet, a valve, a bent section and the like on the loss and heat transfer of the double-layer continuous pipe water head is researched. The rules and mechanisms of the above factors are summarized and concluded.
According to the novel energy-saving hot water circulating system constructed by the continuous double-layer pipes, on the premise that internal water flow and water pressure are guaranteed, the inner pipes of the double-layer pipes are directly connected with the hot water inlet, the outer pipes replace return water pipelines in a traditional water pipe network, and the wiring form of the water pipe network is simplified; meanwhile, a mass transfer and heat transfer model of the novel hot water circulation system is established, factors influencing comprehensive energy consumption of the system and rules thereof are researched, the factors comprise a wiring mode, a bypass switch design, water pressure at an outlet of a water heater, water temperature at the outlet, pipeline length and the like, the comprehensive energy consumption is compared with that of a traditional single-pipe hot water circulation system under the condition of various same flow field parameters, and the energy-saving and carbon-saving effects of the hot water circulation system constructed by double-layer pipes are comprehensively evaluated in a carbon check mode and the like.
Through comparison (the comparison result is shown in table 1), the water-saving and energy-saving effects of the continuous double-layer pipe compared with the common PPR pipeline are preliminarily verified under the condition of no hot water circulation in the household water pipe network (the hot water pipeline is directly connected with the water outlet of the water heater, and the water outlet temperature of the water heater is 55 ℃). At the moment, the double-layer pipe pipeline replaces a traditional hot water pipeline and a traditional cold water pipeline, cold water in the inner pipe is preferentially drained, and when the water temperature of the water using end reaches a specified temperature of 37 ℃, the temperature sensing mixing valve is opened and the cold water in the outer pipe is connected; to novel energy-conserving hot water circulating system's primary design, replace hot-water line and wet return, add modes such as infrared induction bypass switch through double-deck continuous pipe, under the same use scene and expense budget, novel energy-conserving hot water circulating system's energy consumption is compared and has been reduced more than 20% in traditional hot water circulation, foresees through further energy consumption analysis and multi-parameter regulation and control optimal design, and system energy-conserving effect has bigger promotion.
TABLE 1 Dn20 continuous double-layer pipe and common pipe straight pipe effluent characteristics
Note: the hot water circulation is not designed in the test, the pipeline is directly connected with the water outlet of the water heater, and the outlet water temperature of the water heater is 55 ℃. The water quantity refers to the quantity of the emptying cold water when the water outlet temperature at the tail end of the pipeline reaches 37 ℃ under different inlet water pressure states and the two pipelines are linearly wired.
The invention has the following beneficial effects:
1. the double-layer pipe type water heater adopts a double-layer pipe design structure, the inner pipe in the double-layer pipe is used as a hot water pipeline, and the outer pipe in the double-layer pipe is used as a water return pipeline, so that compared with a traditional pipeline arrangement mode, the double-layer pipe type water heater is simpler in pipe arrangement structure, faster in pipe arrangement operation and convenient to arrange and operate the hot water pipeline;
2. the outer pipe in the invention can play a role in preserving heat of the hot water in the inner pipe, and the heat exchange rate of the hot water in the inner pipe to the outside is reduced, so that the energy consumption of the hot water circulating system is reduced, and the use effect of the hot water circulating system is improved;
3. the outer pipe can protect the inner pipe, the inner pipe is prevented from being damaged by external factors, and meanwhile when the inner pipe is damaged and leaked, water flow in the inner pipe can flow into hot water equipment again through the outer pipe, so that water resource waste is avoided, and the using effect of the water heater is further improved.
Claims (8)
1. An energy-saving hot water circulating system constructed by double-layer pipes comprises a hot water main pipeline pipe fitting and a plurality of hot water branch pipeline fittings, wherein one ends of the plurality of hot water branch pipeline fittings are communicated with the hot water main pipeline pipe fitting; the method is characterized in that: the hot water main pipeline and the hot water branch pipeline respectively comprise a hot water inner pipe and a hot water outer pipe, and the hot water inner pipe is sleeved on the inner side of the hot water outer pipe; one end of a hot water inner pipe in the hot water branch pipe fitting is communicated with a hot water inner pipe in the hot water main pipe fitting, and the other end of the hot water inner pipe in the hot water branch pipe fitting is provided with a hot water control valve; one end of a hot water outer pipe in the hot water branch pipe fitting is communicated with a hot water outer pipe in the hot water main pipe fitting, and a sealed state is formed between the other end of the hot water outer pipe in the hot water branch pipe fitting and a hot water inner pipe in the hot water branch pipe fitting; and a backwater through hole is formed in the side wall of the hot water inner pipe in the hot water branch pipe fitting, the hot water inner pipe in the hot water branch pipe fitting is communicated with the hot water outer pipe in the hot water branch pipe fitting through the backwater through hole, and a backwater control valve is arranged in the backwater through hole.
2. The double-pipe energy-saving hot water circulating system according to claim 1, wherein: the backwater through hole is arranged on the side wall of one end of the hot water inner pipe in the hot water branch pipe fitting, which is far away from the hot water main pipe fitting.
3. The double-pipe energy-saving hot water circulating system according to claim 2, wherein: the inner wall of one end, far away from the hot water main pipe fitting, of the hot water inner pipe in the hot water branch pipe fitting is provided with a temperature control switch, and the temperature control switch is electrically connected with the return water control valve and the hot water control valve respectively.
4. The double-pipe energy-saving hot water circulating system according to claim 3, wherein: one end of a hot water inner pipe in the hot water main pipeline pipe fitting is in a blocking state, and the other end of the hot water inner pipe in the hot water main pipeline pipe fitting is communicated with a hot water outlet of hot water equipment; the two ends of the hot water outer pipe in the hot water main pipeline fitting are in a blocking state with the hot water inner pipe in the hot water main pipeline fitting; the outside of hot water outer tube in the hot water main road pipe fitting is provided with the wet return, and the one end of wet return is linked together with the hot water outer tube inside in the hot water main road pipe fitting, and the other end of wet return is linked together with hot water equipment's cold water return mouth.
5. The double-pipe energy-saving hot water circulating system according to claim 4, wherein: energy-saving hot water circulating system still includes cold water trunk line pipe fitting and a plurality of cold water branch road pipe fitting, and a plurality of cold water branch road pipe fitting sets up with a plurality of hot water branch road pipe fitting respectively is corresponding, and the one end of a plurality of cold water branch road pipe fitting all is linked together with cold water trunk line pipe fitting, and the other end and the corresponding hot water branch road pipe fitting of a plurality of cold water branch road pipe fitting set up side by side.
6. The double-pipe energy-saving hot water circulating system according to claim 5, wherein: the energy-saving hot water circulating system also comprises a water outlet faucet, wherein a hot water inlet port of the water outlet faucet is communicated with the hot water control valve, and a cold water inlet port of the water outlet faucet is communicated with the cold water control valve arranged at the end head of the cold water branch pipe fitting.
7. The double-pipe energy-saving hot water circulating system according to claim 6, wherein: the energy-saving hot water circulating system also comprises a water outlet controller, and the water outlet controller is respectively connected with the hot water control valve and the cold water control valve.
8. The double-pipe energy-saving hot water circulating system according to claim 7, wherein: and a connecting support piece for improving the structural stability is arranged between the outer side wall of the hot water inner pipe of the hot water main pipeline pipe fitting and the inner side wall of the hot water outer pipe of the hot water main pipeline pipe fitting and/or between the outer side wall of the hot water inner pipe of the hot water branch pipeline fitting and the inner side wall of the hot water outer pipe of the hot water branch pipeline fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111539532.9A CN113983542A (en) | 2021-12-15 | 2021-12-15 | Energy-saving hot water circulating system constructed by double-layer pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111539532.9A CN113983542A (en) | 2021-12-15 | 2021-12-15 | Energy-saving hot water circulating system constructed by double-layer pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113983542A true CN113983542A (en) | 2022-01-28 |
Family
ID=79733929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111539532.9A Pending CN113983542A (en) | 2021-12-15 | 2021-12-15 | Energy-saving hot water circulating system constructed by double-layer pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113983542A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008358504A1 (en) * | 2008-06-24 | 2009-12-30 | Kyungdong Navien Co., Ltd. | Hot water supply system for constantly maintaining temperature of hot water |
| DE202009001030U1 (en) * | 2009-01-27 | 2010-06-24 | Gebr. Kemper Gmbh & Co. Kg Metallwerke | Drinking or service water system |
| CN204329341U (en) * | 2014-12-17 | 2015-05-13 | 湖南理工职业技术学院 | A kind of water circulation system of automatic control leaving water temperature |
| CN109611944A (en) * | 2018-01-13 | 2019-04-12 | 陈奎宏 | A kind of hot water cyclesystem |
| CN110425749A (en) * | 2019-08-08 | 2019-11-08 | 华帝股份有限公司 | Constant temperature system and constant temperature control method for gas water heater |
-
2021
- 2021-12-15 CN CN202111539532.9A patent/CN113983542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008358504A1 (en) * | 2008-06-24 | 2009-12-30 | Kyungdong Navien Co., Ltd. | Hot water supply system for constantly maintaining temperature of hot water |
| DE202009001030U1 (en) * | 2009-01-27 | 2010-06-24 | Gebr. Kemper Gmbh & Co. Kg Metallwerke | Drinking or service water system |
| CN204329341U (en) * | 2014-12-17 | 2015-05-13 | 湖南理工职业技术学院 | A kind of water circulation system of automatic control leaving water temperature |
| CN109611944A (en) * | 2018-01-13 | 2019-04-12 | 陈奎宏 | A kind of hot water cyclesystem |
| CN110425749A (en) * | 2019-08-08 | 2019-11-08 | 华帝股份有限公司 | Constant temperature system and constant temperature control method for gas water heater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103307734B (en) | A kind of gas heater of instant-heating and outlet hot | |
| CN107024004A (en) | A kind of electric-heating water energy storage heating and solar energy water energy storage heating complementary system | |
| CN204555381U (en) | A kind of energy and water saving type solar water heater | |
| CN104456699B (en) | A kind of air type solar energy hot water VMC towards passive room | |
| CN113983542A (en) | Energy-saving hot water circulating system constructed by double-layer pipes | |
| CN105042118B (en) | Backwater tap is forced in a kind of temperature control for supporting Digital Control | |
| CN206609036U (en) | Heating system for coupling application of solar energy and gas wall-mounted boiler | |
| CN110925864A (en) | System for efficiently utilizing building collected and dispersed bathing waste water to prepare hot water | |
| CN214275888U (en) | Circulation heating system | |
| CN206669027U (en) | A kind of water saving loop apparatus based on self-supporting temperature-sensing valve | |
| CN105841336A (en) | Water heater and hot water circulating device thereof | |
| CN201954662U (en) | Domestic air source heat pump water heater | |
| CN212078096U (en) | Single-pump hydraulic module | |
| CN201265911Y (en) | Single tube heat-supply heating system | |
| CN107101249A (en) | Energy-saving domestic hot-water's pipe-line system for central heating | |
| CN207006325U (en) | Energy-saving domestic hot-water's pipe-line system for central heating | |
| CN210087419U (en) | Energy-saving heating system for side of heat and power cogeneration heat network | |
| CN207674579U (en) | Hot water return water system in a kind of modified room | |
| CN106678930A (en) | Solar phase change heating plant | |
| CN106642813A (en) | Self-sufficient sewage source heat pump system | |
| CN206787070U (en) | A kind of intelligent temperature water-saving system | |
| CN203431979U (en) | Multidirectional heating system | |
| CN218410066U (en) | Air source heat pump and gas wall-mounted boiler combined heating system | |
| CN205065891U (en) | Energy -saving bathroom underfloor heating system | |
| CN212715174U (en) | Bathroom hot water circulation pipe-line system reaches bathroom including it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |