CN213146941U - Hot water circulating system - Google Patents
Hot water circulating system Download PDFInfo
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- CN213146941U CN213146941U CN202021646358.9U CN202021646358U CN213146941U CN 213146941 U CN213146941 U CN 213146941U CN 202021646358 U CN202021646358 U CN 202021646358U CN 213146941 U CN213146941 U CN 213146941U
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Abstract
The utility model relates to a hot water circulating system belongs to water heater technical field. The gas heating device and the radiator of the system form a heating cycle and are provided with a cold water inlet and a hot water outlet; the water storage heating device comprises a heating inner container with a circulation port, a common port and a hot water port, a circulation inlet, a common water port and a hot water outlet, wherein the circulation port and the common port are respectively communicated with the circulation inlet and the common water port through a first electric valve and a second electric valve, and the hot water port is connected with the hot water outlet through a circulating pump; the hot water outlet is communicated with the circulating inlet, and the hot water outlet is communicated to each water consuming point connected in parallel through a hot water supply pipeline; the external cold water source leads to a cold water inlet, the other path leads to each parallel water using point through a cold water supply pipeline, and a one-way pipeline leading to a common water port is branched; the farthest water using point is provided with a water returning branch. The utility model discloses no matter how long hot water pipeline is, all can realize opening promptly and heat promptly, can avoid gas heating device frequently to open moreover and stop, do not influence hot water heating circulation.
Description
Technical Field
The utility model relates to a hot water circulating system, especially a hot water circulating system that can heat promptly belongs to water heater technical field.
Background
To the best of the applicant's knowledge, there are two main approaches to achieving instant heating of hot water supply systems: the hot water buffering method is characterized in that a heat-preservation water tank is installed at the position such as the lower part of a washbasin, cold water enters the water tank and is mixed with high-temperature water for buffering for a user to use, when a pipeline is long, the method needs a large-volume water tank, the installation space is limited, the heat-preservation water tank is installed at each facility such as the washbasin, so that the corresponding faucet can be guaranteed to be started and heated immediately, and the frequent starting and stopping of a gas engine cannot be avoided; the other is a circulation heating method, namely residual cold water in a hot water pipe is sent to a water heater for heating by a circulating pump and then is supplied to users for use, and the method cannot solve the problems of sudden cold and sudden heat and frequent start and stop of a gas engine.
The Chinese patent document with the application number of 201320058861.6 discloses a central hot water system, which comprises a heating source, a water storage tank, a central controller, a heating probe positioned in the water storage tank, a magnesium rod and a cold water inlet pipe for providing water source for the central hot water system; the heating source is connected with a cold water outlet and a hot water inlet of the water storage tank through a heating pipeline to form a heating loop; the water storage tank is connected with a circulating pipeline through a hot water outlet and a circulating water return port to form a water supply/return loop. The circulating water circulating pump can preheat the cold water from the water storage tank to the water using terminal, and the water using terminal is heated when being opened, thereby reducing the waste of water resources. Although the technical scheme can relieve the fluctuation of the water temperature during instant heating, the implementation has the following problems: 1) the water tank circulating heating pipeline and the hot water circulating pipeline are mutually independent, so two sets of circulating pump circulating pipelines are needed, the structure is complex, the cost is high, and the improvement on the original basis is not suitable; 2) the water tank is used as a circulating heat source, the length of the circulating pipe is limited by the volume of the water tank, when the volume of the water tank is designed to be small, the requirement of circulating heating of the pipeline cannot be met through one circulation, the pipeline can be heated through circulation after the water tank is heated, the circulating period is long, and if the designed capacity of the water tank is large, the installation space is large.
Disclosure of Invention
The utility model aims at solving the problems in the prior art, providing a heating water heating device which is suitable for various house types and long hot water pipes, not only can realize that each water point is opened instantly and heated instantly and is comfortable and hot water with constant temperature, but also can not frequently start and stop heating and interrupt heating hot water circulation when discharging water for a short time.
In order to achieve the above object, one of the basic technical solutions of the hot water circulation system of the present invention is: the heating system comprises a gas heating device and a water storage heating device, wherein the gas heating device and a radiator form a heating cycle and are provided with a cold water inlet and a hot water outlet; the water storage heating device comprises a heating inner container with a circulation port, a common port and a hot water port, a circulation inlet, a common water port and a hot water outlet, wherein the circulation port and the common port are respectively communicated with the circulation inlet and the common water port through a first electric valve and a second electric valve, and the hot water port is connected with the hot water outlet through a circulation pump; the hot water outlet is communicated with the circulating inlet, and the hot water outlet is communicated with each water consuming point connected in parallel through a hot water supply pipeline; one path of the external cold water source leads to the cold water inlet, the other path leads to each parallel water using point through a cold water supply pipeline, and a one-way pipeline leading to a common water port is branched; the farthest water using point is provided with a water returning branch.
In order to achieve the above object, the second basic technical solution of the hot water circulation system of the present invention is: the heating system comprises a gas heating device and a water storage heating device, wherein the gas heating device and a radiator form a heating cycle and are provided with a cold water inlet and a hot water outlet; the water storage heating device comprises a heating inner container with a circulation port and a hot water port, a circulation inlet, a circulation outlet, a water return port and a hot water outlet, wherein the circulation port is connected with a first port of the electric three-way valve and is respectively communicated with a second port and a third port of the electric three-way valve, and the water return port is connected with the third port of the electric three-way valve through a circulation pump; the hot water outlet is communicated with the circulating inlet, and the circulating outlet is communicated with the cold water inlet; the hot water outlet is communicated to each water consuming point in parallel through a hot water supply pipeline; one path of the external cold water source leads to the water return port, and the other path leads to each parallel water using point through a cold water supply pipeline; the farthest water using point is provided with a water returning branch.
Adopt the utility model discloses afterwards, no matter how long hot water pipeline is in theory, can control and realize opening promptly and heating promptly each water spot promptly, guarantee to provide the comfortable hot water of constant temperature, turn on the water in short time moreover and can avoid gas heating device to frequently open and stop, do not influence its supporting hot water heating circulation normal operating yet.
The utility model discloses a further perfection is, the return water branch road is the crossing connection H valve (one-way temperature control valve) constitution of the cold, hot water supply pipeline of furthest water point.
The utility model discloses it is still further perfect, the return water branch road is the water point hot water supply pipeline branch that uses farthest to lead to the return water pipeline constitution of the corresponding mouth of a river of water storage heating device.
Drawings
Fig. 1 is a schematic view of a pipeline structure according to a first embodiment of the present invention.
Fig. 2 is a schematic view of a pipeline structure according to a second embodiment of the present invention.
Fig. 3 is a schematic view of a pipeline structure according to a third embodiment of the present invention.
Fig. 4 is a schematic view of a pipeline structure according to a fourth embodiment of the present invention.
Detailed Description
Example one
The hot water circulation system of the present embodiment includes a wall-hanging stove as a gas heating device 1 and a stored water heating device 2 as shown in fig. 1. The gas heating device 1 and the radiator 3 form a heating cycle, and the gas heating device is provided with a cold water inlet 1-1 and a hot water outlet 1-2. The water storage heating device 2 comprises a heating inner container 4 with a built-in electric heating rod, and a circulating inlet 2-1, a shared water inlet 2-2 and a hot water outlet 2-3 which are positioned on the shell, wherein the shared water inlet 2-2 can be controlled to complete two functions of cold water inlet and backwater inlet, and the heating inner container 4 is provided with a circulating port 4-1, a shared port 4-2 and a hot water port 4-3.
The circulation port 4-1 and the common port 4-2 are respectively communicated with the circulation inlet 2-1 and the common water port 2-2 through a first electric valve V1 and a second electric valve V2, and the hot water port 4-3 is connected with the hot water outlet 2-3 through a circulation pump P after passing through a flow sensor L. The hot water outlet 1-2 is communicated with the circulating inlet 2-1.
The hot water outlet 2-3 is connected to each of the water consumption points Y1, Y2 and … Yn in parallel through a hot water supply pipeline provided with a safety valve V3. One path of the external cold water source C is communicated with a cold water inlet 1-1 of the wall-hanging stove, the other path of the external cold water source C is communicated with water consumption points Y1, Y2 and … Yn which are connected in parallel through a cold water supply pipeline, and a one-way pipeline which is communicated with a common water port 2-2 through a first one-way valve D1 is branched. The H valve formed by the second check valve D2 and the temperature control valve V4 is bridged between the cold water supply pipeline and the hot water supply pipeline at the farthest water using point Yn, so that the cold water supply pipeline can be used as a return water branch when heat preservation circulation is needed. T1 and T2 are thermometers, respectively.
The water storage heating device of the system of the embodiment only has three external interfaces, and the cold water supply pipe is used as a return branch pipe, so that a return pipeline is not needed to be additionally arranged, the pipeline is very simple, the cost is low, the improvement is convenient, and the following working states can be controlled and realized:
1.1, conventional hot water backwater heat preservation circulation: when the circulating pump is started, hot water is output from the inner container → the flow sensor → the circulating pump → the hot water outlet → the hot water supply pipeline → the H valve → the cold water supply pipeline → the first one-way valve → the common water port → the second electric valve → the inner container;
1.2, when the conventional hot water backwater can not be guaranteed, switching to the enhanced hot water backwater heat preservation circulation: when the circulating pump is started, hot water is output from the inner container → the flow sensor → the circulating pump → the hot water outlet → the hot water supply pipeline → the H valve → the cold water supply pipeline → the cold water inlet → the hot water outlet → the circulating inlet → the first electric valve → the inner container;
1.3, in the circulating water return process, a user uses cold water or hot water to cause flow change, and whether water return circulation is stopped or not is judged according to data of a flow sensor;
1.4, small amount of water: cold water passes through the common water port → the first one-way valve → the common water port → the second electric valve → the inner container → hot water is output;
1.5, large amount of water: cold water passes through the cold water inlet → the hot water outlet → the circulation inlet → the first electric valve → the inner container → hot water output.
The controlled transform as required of above operating condition makes the hot water circulating system of this embodiment no matter be used for new clothes or reform transform, no matter how long hot water pipeline is, can all realize opening promptly of each water point promptly and heat, guarantees to provide the comfortable hot water of constant temperature, discharges water in short time moreover and can not frequently open and stop hanging stove, does not also influence the hot water heating circulation.
Example two
The hot water circulation system of this embodiment is as shown in fig. 2, and its basic constitution is the same as the embodiment, except that the farthest water point cooling Yn is not provided with an H valve, but is branched from the water supply pipeline and led to the common water gap 2-2 through a third one-way valve to constitute a water return branch. The control state and the beneficial effect realized by the method can be known easily by referring to the first embodiment, and the method is only provided with a special water return branch, so that the energy-saving effect is better, but the method is not suitable for the transformation of an old system without a water return pipeline.
EXAMPLE III
The hot water circulation system of the present embodiment includes a wall-hanging stove as the gas heating apparatus 1 and a stored water heating apparatus 2 as shown in fig. 3. The gas heating device 1 and the radiator 3 form a heating cycle, and the gas heating device is provided with a cold water inlet 1-1 and a hot water outlet 1-2. The water storage heating device 2 comprises a heating inner container 4 internally provided with an electric heating rod, and a circulating inlet 2-1, a circulating outlet 2-2 ', a water return port 2-2' and a hot water outlet 2-3 which are positioned on the shell, wherein the heating inner container 4 is provided with a circulating port 4-1 and a hot water port 4-3.
The circulation port 4-1 is connected with a first port A of the electric three-way valve V1 'through a flow sensor L, and is communicated with a second port B and a third port C of the electric three-way valve, a circulation inlet 2-1 and a circulation outlet 2-2', and the water return port 2-2 'is connected with a third port C of the electric three-way valve V1' through a circulation pump P. A hot water outlet 1-2 of the wall-mounted boiler is communicated with a circulating inlet 2-1, and a circulating outlet 2-2' is communicated with a cold water inlet 1-1.
The hot water outlet 2-3 is connected to each parallel water using point Y1, Y2, … Yn through a hot water supply pipeline. One path of the external cold water source C leads to the water return port 2-2' through a first one-way valve D1 and a safety valve V3, and branches lead to water using points Y1, Y2 and … Yn which are connected in parallel through a cold water supply pipeline. The H valve formed by the second check valve D2 and the temperature control valve V4 is bridged between the cold water supply pipeline and the hot water supply pipeline at the farthest water using point Yn, so that the cold water supply pipeline can be used as a return water branch when heat preservation circulation is needed. T1 and T2 are thermometers respectively.
Although the water storage heating device of this embodiment system has four external interfaces, inner bag simple structure, and borrow the cold water delivery pipe and also do the return water branch pipe, need not to establish the return water pipeline in addition, therefore the pipeline is also very simple and direct, and cost economy is convenient for reform transform, can control and realize:
3.1, conventional hot water backwater heat preservation circulation: when the circulating pump is started, hot water is output from the hot water outlet → the hot water supply pipeline → the H valve → the cold water supply pipeline → the first one-way valve → the water return port → the circulating pump → the electric three-way valve is conducted by AC → the flow sensor → the inner container;
3.2, when the conventional hot water backwater can not be guaranteed, switching to the enhanced hot water backwater heat preservation circulation: when the circulating pump is started, hot water is output from the hot water outlet → the hot water supply pipeline → the H valve → the cold water supply pipeline → the first one-way valve → the water return port → the circulating pump → the circulating outlet → the cold water inlet → the hot water outlet → the circulating inlet → the electric three-way valve AB is conducted → the flow sensor → the inner container;
3.3, in the circulating water return process, a user uses cold water or hot water to cause flow change, and whether water return circulation is stopped or not is judged according to data of a flow sensor;
3.4, small amount of water: cold water passes through the first one-way valve → the water return port → the circulating pump → the electric three-way valve AC conduction → the flow sensor → the inner container → the hot water supply pipeline → the water using point;
1.5, large amount of water: the cold water passes through the first check valve → the water return port → the circulating pump → the circulating outlet → the cold water inlet → the hot water outlet → the circulating inlet → the electric three-way valve AB for conduction → the flow sensor → the inner container → the hot water supply pipeline → the water using point.
Since the working states can be controlled to be switched as required, the beneficial effects of the hot water circulation system of the present embodiment are substantially the same as those of the first embodiment, and are not further described.
Example four
The hot water circulation system of this embodiment is basically the same as the third embodiment in the same way as shown in fig. 4, except that the farthest point cooling Yn is not provided with an H valve, but is branched from a water supply pipeline and led to a water return port 2-2 "through a third check valve to form a water return branch. The control states and advantageous effects achieved by the present invention can be understood with reference to the foregoing embodiments.
In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.
Claims (4)
1. A hot water circulating system comprises a gas heating device and a water storage heating device, wherein the gas heating device and a radiator form a heating circulation and are provided with a cold water inlet and a hot water outlet; the method is characterized in that: the water storage heating device comprises a heating inner container with a circulation port, a common port and a hot water port, a circulation inlet, a common water port and a hot water outlet, wherein the circulation port and the common port are respectively communicated with the circulation inlet and the common water port through a first electric valve and a second electric valve, and the hot water port is connected with the hot water outlet through a circulation pump; the hot water outlet is communicated with the circulating inlet, and the hot water outlet is communicated with each water consuming point connected in parallel through a hot water supply pipeline; one path of the external cold water source leads to the cold water inlet, the other path leads to each parallel water using point through a cold water supply pipeline, and a one-way pipeline leading to a common water port is branched; the farthest water using point is provided with a water returning branch.
2. A hot water circulating system comprises a gas heating device and a water storage heating device, wherein the gas heating device and a radiator form a heating circulation and are provided with a cold water inlet and a hot water outlet; the method is characterized in that: the water storage heating device comprises a heating inner container with a circulation port and a hot water port, a circulation inlet, a circulation outlet, a water return port and a hot water outlet, wherein the circulation port is connected with a first port of the electric three-way valve and is respectively communicated with a second port and a third port of the electric three-way valve, and the water return port is connected with the third port of the electric three-way valve through a circulation pump; the hot water outlet is communicated with the circulating inlet, and the circulating outlet is communicated with the cold water inlet; the hot water outlet is communicated to each water consuming point in parallel through a hot water supply pipeline; one path of the external cold water source leads to the water return port, and the other path leads to each parallel water using point through a cold water supply pipeline; the farthest water using point is provided with a water returning branch.
3. The hot water circulation system according to claim 1 or 2, wherein: the backwater branch is formed by a cross-over H valve of the farthest water point cold and hot water supply pipeline.
4. The hot water circulation system according to claim 1 or 2, wherein: the water return branch is formed by branching a water return pipeline leading to a corresponding water port of the water storage heating device for the farthest water point hot water supply pipeline.
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| CN202021646358.9U CN213146941U (en) | 2020-08-10 | 2020-08-10 | Hot water circulating system |
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| CN202021646358.9U CN213146941U (en) | 2020-08-10 | 2020-08-10 | Hot water circulating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198900A (en) * | 2021-12-15 | 2022-03-18 | 中煤科工重庆设计研究院(集团)有限公司 | Circulating pump-free household hot water circulating system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198900A (en) * | 2021-12-15 | 2022-03-18 | 中煤科工重庆设计研究院(集团)有限公司 | Circulating pump-free household hot water circulating system and method |
| CN114198900B (en) * | 2021-12-15 | 2023-08-22 | 中煤科工重庆设计研究院(集团)有限公司 | Domestic hot water circulating system and method without circulating pump |
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