CN219693414U - Domestic hot water supply system - Google Patents
Domestic hot water supply system Download PDFInfo
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- CN219693414U CN219693414U CN202321266759.5U CN202321266759U CN219693414U CN 219693414 U CN219693414 U CN 219693414U CN 202321266759 U CN202321266759 U CN 202321266759U CN 219693414 U CN219693414 U CN 219693414U
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- supply system
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 196
- 238000003860 storage Methods 0.000 claims abstract description 34
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 230000003020 moisturizing effect Effects 0.000 claims 1
- 239000013589 supplement Substances 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 4
- 210000002445 nipple Anatomy 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The utility model relates to building water supply, in particular to a domestic hot water supply system. The heat source is respectively communicated with two pipe orifices of a primary system of the heat exchanger through a first pipeline and a second pipeline, the first pipeline is provided with an electric three-way valve and a first circulating pump, and one port of the electric three-way valve is communicated with the second pipeline; two pipe orifices of the secondary system of the heat exchanger are respectively communicated with a lower tank opening and an upper tank opening of the hot water storage tank through a third pipeline and a fourth pipeline, the third pipeline is provided with a second circulating pump, the fourth pipeline is provided with a first electric valve, and the hot water pipe is communicated with the third pipeline through a fifth pipeline provided with the third circulating pump and the first stop valve. The utility model has the advantages of timely and rapid hot water preparation and supplement, and ensures the hot water temperature requirement of the terminal user under the conditions of winter, simultaneous use by multiple users and the like.
Description
Technical Field
The utility model relates to building water supply, in particular to a domestic hot water supply system.
Background
At present, some large-scale venues such as hotels and stadiums adopt a centralized hot water supply system equipped by public infrastructure, and the hot water supply system has a problem for a long time in the use process: normally, the hot water capacity is excessive, and the hot water supply capacity is insufficient when people concentrate on the use.
Through the analysis of the device structure principle and the on-site operation condition, the main reasons are that when the pipeline of the hot water supply system is large in closed loop and long in pipeline, when no one takes hot water for a long time, the hot water in the pipeline is static and the water temperature is reduced quickly. When a user takes water, the temperature of the hot water retained in the pipeline is reduced to a certain temperature, and the taken water is the retained cold water in the pipeline. In addition, although the apparatus is being cyclically heated for a while after the user takes water, it cannot raise the water temperature in the pipe in a short time due to the long pipe length and the long heating time. The heating lag causes that the hot water is not supplied, and particularly when a plurality of users use the hot water at the same time, the hot water supply is insufficient, delay and the like when the users concentrate on using the hot water although the hot water can meet the requirements in normal use.
The utility model of China with the authorized bulletin number of CN210532674U discloses gas water heating equipment, which discloses a water storage tank, a hot water pipe and a circulating pump, and cannot be used for a centralized domestic hot water supply system.
Disclosure of Invention
The utility model aims to solve the technical problems, thereby providing a domestic hot water supply system which can timely prepare and supplement hot water rapidly and ensure the hot water temperature requirement of multiple users.
The utility model solves the technical problems and adopts the following technical scheme:
the domestic hot water supply system comprises a heat source, a hot water storage tank and a user tap, wherein the user tap is communicated with an upper tank opening of the hot water storage tank through a hot water pipe, the user tap is communicated with a water supplementing pipe through a cold water pipe, a heat exchanger is arranged between the heat source and the hot water storage tank, the heat source is respectively communicated with two pipe openings of a primary system of the heat exchanger through a first pipeline and a second pipeline, the first pipeline is provided with an electric three-way valve and a first circulating pump, and one port of the electric three-way valve is communicated with the second pipeline; two pipe orifices of the secondary system of the heat exchanger are respectively communicated with a lower tank opening and an upper tank opening of the hot water storage tank through a third pipeline and a fourth pipeline, the third pipeline is provided with a second circulating pump, the fourth pipeline is provided with a first electric valve, and the hot water pipe is communicated with the third pipeline through a fifth pipeline provided with the third circulating pump and the first stop valve.
Compared with the prior art, the utility model adopting the technical scheme has the beneficial effects that:
the hot water preparation is timely and rapid to supplement, so that the hot water temperature requirement of the terminal user under the conditions of simultaneous use by multiple users in winter is guaranteed, the ultra-high temperature protection function of the hot water in the pipeline is realized, and the safety and the redundancy are good.
Further, the optimization scheme of the utility model is as follows:
the water supplementing pipe is communicated with the third pipeline through a second stop valve, and a second electric valve is arranged on the water supplementing pipe.
And a third pipeline between the heat exchanger and the second circulating pump is provided with a water temperature and pressure sensor.
The hot water pipe is provided with a bleed valve.
And the third pipeline and the hot water pipe are respectively provided with a thermometer.
And a first water temperature sensor is arranged at a pipe orifice connected with the fourth pipeline of the heat exchanger.
The upper part of the hot water storage tank is provided with a second water temperature sensor and a third water temperature sensor.
And a fourth water temperature sensor is arranged at the upper end of the fifth pipeline.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
in the figure: a first circulation pump 1; an electric three-way valve 2; shorting tube 2-1; a heat exchanger 3; a first pipeline 3-1; a second pipeline 3-2; a third pipeline 3-3; fourth pipeline 3-4; a second circulation pump 4; a centralized control platform 5; a hot water storage tank 6; a user tap 7; a hot water pipe 7-1; 7-2 of a cold water pipe; a purge valve 7-3; a third circulation pump 8; a first electrically operated valve 9; a heat source 10; a fifth line 11; a water replenishing pipe 12; a second electrically operated valve 13; a first shut-off valve 14; a second shut-off valve 15; water temperature and pressure sensors 16; a first water temperature sensor 17; a second water temperature sensor 18; a third water temperature sensor 19; a fourth water temperature sensor 20; a thermometer 21.
Detailed Description
The utility model is further described in detail below with reference to the drawings and examples.
Referring to fig. 1, the embodiment is a domestic hot water supply system, which mainly comprises a first circulating pump 1, an electric three-way valve 2, a heat exchanger 3, a second circulating pump 4, a hot water storage tank 6, a user tap 7, a third circulating pump 8 and a heat source 10. The heat source 10 can adopt any type of heat source, the water outlet and the water inlet of the heat source 10 are respectively communicated with the water inlet and the water outlet of the primary system of the heat exchanger 3 through a first pipeline 3-1 and a second pipeline 3-2, and the heat exchanger 3 is a plate heat exchanger. The first pipeline 3-1 is provided with an electric three-way valve 2 and a first circulating pump 1 in sequence along the water flow direction, one port of the electric three-way valve 2 is communicated with the second pipeline 3-2 through a nipple 2-1, a primary system of the heat exchanger 3 is low-inlet high-outlet, and a secondary system is high-inlet low-outlet.
The primary system of the heat source 10, the first circulating pump 1, the electric three-way valve 2, the nipple 2-1, the first pipeline 3-1, the second pipeline 3-2 and the heat exchanger 3 forms a primary circulating loop. When the electric three-way valve 2 is opened, the water outlet of the heat source 10 and the water inlet of the heat exchanger 3 are communicated, and when the electric three-way valve 2 is closed, the nipple 2-1 is communicated with the water inlet and the water outlet of the heat source 10. The first circulation pump 1 is provided on the primary circulation loop so that the primary circulation loop can circulate water in the direction of the heat source 10, the electric three-way valve 2, the first circulation pump 1, the heat exchanger 3, and the heat source 10.
The water inlet and the water outlet of the secondary system of the heat exchanger 3 are respectively communicated with the lower tank opening and the upper tank opening of the hot water storage tank 6 through a third pipeline 3-3 and a fourth pipeline 3-4, the third pipeline 3-3 is provided with a second circulating water pump 4, and one end of the fourth pipeline 3-4, which is close to the heat exchanger 3, is provided with a first electric valve 9. The water supplementing pipe 12 is provided with a second electric valve 13 and is communicated with the fourth pipeline 3-4 through a first stop valve 14. The upper tank opening of the hot water storage tank 6 is communicated with the hot water opening of the user tap 7 through a hot water pipe 7-1, the cold water opening of the user tap 7 is communicated with a water supplementing pipe 12 through a cold water pipe 7-2, and the hot water pipe 7-1 is provided with a deflation valve 7-3. The hot water pipe 7-1 communicates with the third pipe 3-3 through a fifth pipe 11 and a second shut-off valve 15, and the third circulation pump 8 is installed in the fifth pipe 11. The secondary circulation loop can sequentially circulate water according to the directions of the second circulation pump 4, the heat exchanger 3, the user tap 7, the third circulation pump 8, the second stop valve 15, the lower tank opening of the hot water storage tank 6 and the second circulation pump 4, and can also sequentially circulate water according to the directions of the hot water storage tank 6, the third circulation pump 8 and the hot water storage tank 6. The hot water storage tank 6 stores and discharges hot water of the secondary circulation circuit by using a principle that hot water having a reduced heating density floats up.
The third pipe 3-3 between the heat exchanger 3 and the second circulation pump 4 is provided with a water temperature and pressure sensor 16, and the water temperature and pressure sensor 16 measures and transmits the water temperature and pipe pressure at its place. The first water temperature sensor 17 is arranged at the pipe orifice of the heat exchanger 3 connected with the fourth pipeline 3-4, the second water temperature sensor 18 and the third water temperature sensor 19 are arranged at the upper part of the hot water storage tank 6, the second water temperature sensor 18 is positioned below the third water temperature sensor 19, the fourth water temperature sensor 20 is arranged at the upper end of the fifth pipeline 11, and the thermometer 21 is respectively arranged at the third pipeline 3-3 and the hot water pipe 7-1. The electric three-way valve 2, the first electric valve 9, the second electric valve 13, the water temperature and water pressure sensor 16, the first water temperature sensor 17, the second water temperature sensor 18, the third water temperature sensor 19 and the fourth water temperature sensor 20 are respectively and electrically connected with the centralized control platform 5, and the centralized control platform 5 can adopt a PLC. The centralized control platform 5 performs centralized and intelligent management on the hot water circulation system, and the four water temperature sensors measure the water temperature at the positions and transmit the water temperature to the centralized control platform 5.
The working procedure of this embodiment is as follows: when the water supply temperature of the hot water system is set to 70 ℃, and the system starts to supply heat, the primary circulation loop sends a signal through the centralized control platform 5, the electric three-way valve 2 is opened, the first circulation pump 1 communicated with the primary circulation loop circulates water in sequence according to the directions of the heat source 10, the electric three-way valve 2, the first circulation pump 1, the heat exchanger 3 and the heat source 10, and heat exchange is carried out through the heat exchanger 3 and the secondary circulation loop.
The secondary circulation loop sends a signal through the central air conditioner 5, starts the second circulation pump 4 and the third circulation pump 8, opens the first electric valve 9, and sequentially circulates water according to the directions of the second circulation pump 4, the heat exchanger 3, the user tap 7, the third circulation pump 8, the second stop valve 15, the lower tank opening of the hot water storage tank 6 and the second circulation pump 4, and exchanges heat through the heat exchanger 3 and the primary circulation loop.
When the water temperature of the secondary circulation loop and the temperature at the water pressure sensor 16 reach 70 ℃, a signal is sent to the centralized control platform 5, the centralized control platform 5 sends a command, the electric three-way valve 2 of the primary circulation loop is closed, and the first circulation pump 1 is stopped at the same time, so that the water outlet and the water return port of the heat source 10 are communicated through the nipple 2-1, short circuit circulation is carried out, and heat loss of the primary loop is reduced; meanwhile, the second circulating pump 4 stops running, the first electric valve 9 is closed, hot water is supplied to the user faucet 7 by using the principle that the hotter the hot water is, the lower the density of the hot water is in the hot water storage tank 6, and the secondary circulating loop sequentially circulates water in the directions of the hot water storage tank 6, the third circulating pump 8 and the hot water storage tank 6, so that the running of equipment of the secondary circulating loop is reduced, and the aim of saving energy is fulfilled.
When the user continues to use, the hot water reaches a certain temperature, namely: when the temperature of the hot water at the third water temperature sensor 19 is reduced and the temperature at the fourth water temperature sensor 20 is lower than the preset hot water supply temperature, the third water temperature sensor 19 and the fourth water temperature sensor 20 send signals to the centralized control platform 5, and the hot water supply system is restarted to start the next heat supply cycle. The water temperature and pressure sensor 16 is also used for monitoring the system pressure of the secondary circulation loop, when the pressure is reduced to a preset value, a feedback signal is sent to the centralized control platform 5, the centralized control platform 5 sends a command, the second electric valve 13 is opened, and water is replenished to the secondary circulation system. The second water temperature sensor 18 and the fourth water temperature sensor 20 are used for monitoring the thermal storage condition in the hot water storage tank, when the temperatures of the second water temperature sensor 18 and the fourth water temperature sensor 20 are the same or close, the hot water storage in the hot water storage tank 6 is completed, the second circulating water pump 4 can be closed, the hot water storage tank 6 is used for supplying hot water, otherwise, a secondary circulation loop is required to be started, and the thermal storage is required to be performed on the hot water storage tank 6.
According to the utility model, the second circulating pump which runs intermittently is arranged, so that hot water in the secondary circulating loop flows continuously and circularly, the water temperature of the hot water in the secondary circulating loop is prevented from being reduced due to long-term static state, and the water temperature of the hot water of a terminal user is ensured. The water temperature sensor is arranged in the secondary circulation loop, so that the temperature control point of the primary circulation loop can react rapidly, the hot water temperature requirement of the terminal user in winter and when multiple users use the water simultaneously is met, the water heater is stopped in summer and when few users use the water heater, and hot water is supplied by the hot water storage tank; by arranging the centralized control platform, the automatic operation of the system can be realized, and the operation cost is reduced. Through setting up temperature sensor and hot water storage tank, realize the intermittent type operation of system, reduce the energy loss, reduce equipment use, increase the life of system.
The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the scope of the claims, but rather the equivalent structural changes made by the application of the present description and drawings are intended to be included within the scope of the claims.
Claims (8)
1. The utility model provides a domestic hot water supply system, includes heat source, hot water storage tank and user tap, and user tap passes through the last jar mouth intercommunication of hot-water line and hot water storage tank, and user tap passes through cold water pipe and moisturizing pipe intercommunication, its characterized in that:
a heat exchanger is arranged between the heat source and the hot water storage tank, the heat source is respectively communicated with two pipe orifices of a primary system of the heat exchanger through a first pipeline and a second pipeline, the first pipeline is provided with an electric three-way valve and a first circulating pump, and one port of the electric three-way valve is communicated with the second pipeline;
two pipe orifices of the secondary system of the heat exchanger are respectively communicated with a lower tank opening and an upper tank opening of the hot water storage tank through a third pipeline and a fourth pipeline, the third pipeline is provided with a second circulating pump, the fourth pipeline is provided with a first electric valve, and the hot water pipe is communicated with the third pipeline through a fifth pipeline provided with the third circulating pump and the first stop valve.
2. The domestic hot water supply system according to claim 1, wherein: the water supplementing pipe is communicated with the third pipeline through a second stop valve, and a second electric valve is arranged on the water supplementing pipe.
3. The domestic hot water supply system according to claim 1, wherein: and a third pipeline between the heat exchanger and the second circulating pump is provided with a water temperature and pressure sensor.
4. The domestic hot water supply system according to claim 1, wherein: the hot water pipe is provided with a bleed valve.
5. The domestic hot water supply system according to claim 1, wherein: and the third pipeline and the hot water pipe are respectively provided with a thermometer.
6. The domestic hot water supply system according to claim 1, wherein: and a first water temperature sensor is arranged at a pipe orifice connected with the fourth pipeline of the heat exchanger.
7. The domestic hot water supply system according to claim 1, wherein: the upper part of the hot water storage tank is provided with a second water temperature sensor and a third water temperature sensor.
8. The domestic hot water supply system according to claim 1, wherein: and a fourth water temperature sensor is arranged at the upper end of the fifth pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321266759.5U CN219693414U (en) | 2023-05-24 | 2023-05-24 | Domestic hot water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321266759.5U CN219693414U (en) | 2023-05-24 | 2023-05-24 | Domestic hot water supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219693414U true CN219693414U (en) | 2023-09-15 |
Family
ID=87970297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321266759.5U Active CN219693414U (en) | 2023-05-24 | 2023-05-24 | Domestic hot water supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219693414U (en) |
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2023
- 2023-05-24 CN CN202321266759.5U patent/CN219693414U/en active Active
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