CN211903266U - Water heater and hot water system - Google Patents
Water heater and hot water system Download PDFInfo
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- CN211903266U CN211903266U CN201922357003.1U CN201922357003U CN211903266U CN 211903266 U CN211903266 U CN 211903266U CN 201922357003 U CN201922357003 U CN 201922357003U CN 211903266 U CN211903266 U CN 211903266U
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- heater
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Abstract
The utility model provides a water heater (1), can switch circulation instant heating mode and ordinary hot water mode and carry out work, include: a water inlet into which water from a water supply source flows; a water outlet for flowing out the heated hot water; a circulation pump (12) for circulating water through a circulation line connected between the water inlet and the water outlet of the water heater (1); a control unit (21) that issues a control signal for operating the circulation pump (12) in the circulation-immediate heating mode and does not issue a control signal for operating the circulation pump in the normal heating mode; a bypass pipeline configured to bypass the circulation pump; and a 1 st water quantity sensor (11) provided in series with the circulation pump (12) and in parallel with the bypass line. According to the utility model discloses, can accurately detect the trouble of circulating pump.
Description
Technical Field
The utility model relates to a water heater and hot water system.
Background
At present, a water heater can work in a circulation instant heating mode and a common hot water mode by switching, an independent instant heating circulation water return pipeline interface is not arranged for construction convenience, a water outlet is connected with a water inlet through a one-way valve, and a water supply pipeline is used as an instant heating circulation water return pipeline.
In this type of water heater, the normal hot water mode is a one-way flow mode in which water is heated from the water inlet inside the water heater and then is delivered from the water outlet, and when a faucet connected to the water outlet is closed, the flow of water is stopped. On the other hand, the circulation-heating mode is a mode in which water from the water inlet is heated inside the water heater and then discharged from the water outlet, and water is circulated to the water inlet to be introduced into the water inlet again when the faucet connected to the water outlet is closed. That is, when the water heater operates in the circulation instant heating mode, hot water circulates in the hot water supply path through the built-in circulation pump, so that a user can use the hot water immediately when the user clicks the faucet, and the use convenience of the water heater is improved. In addition, because an independent instant heating circulation water return pipeline is not needed, the water heater can be used even if a house with the instant heating circulation water return pipeline is not reserved, and the installation universality is improved.
In such a water heater, the circulation pump may be out of operation, so-called malfunction. When the circulation pump has a so-called malfunction in which the circulation pump cannot be stopped, the circulation pump is erroneously continuously operated even if the operation of the circulation pump is not required, which results in an unnecessary increase in energy consumption.
Further, as described in patent document 1, since the flow sensor for measuring the water flow in the water heater is provided downstream of the junction point of the bypass water path and the circulation pump, it is impossible to distinguish whether the water flow is flowing through the bypass water path or the circulation pump only based on the detection result of the flow sensor, and it is impossible to determine whether the circulation pump is operating erroneously, that is, it is impossible to detect a so-called malfunction of the circulation pump.
Patent document 1: japanese patent 6092815
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above circumstances, and provides a water heater and a hot water system capable of detecting a malfunction of a circulation pump.
The utility model provides a water heater can switch circulation instant heating mode and ordinary hot water mode and carry out work, include: a water inlet into which water from a water supply source flows; a water outlet for flowing out the heated hot water; a circulation pump circulating water in a circulation line connected between the water inlet and the water outlet of the water heater; a control unit for generating a control signal for operating the circulation pump in the circulation immediate heating mode and not generating a control signal for operating the circulation pump in the normal hot water mode; a bypass line configured to bypass the circulation pump; and a 1 st water amount detection unit provided in series with the circulation pump and in parallel with the bypass line.
The utility model also provides a hot water system, include: the above-mentioned water heater; and the circulation pipeline connecting the water inlet and the water outlet of the water heater.
According to the utility model discloses, can accurately detect the trouble of circulating pump, avoid the extravagant problem of electric power that the malfunction of maloperation arouses.
Drawings
Fig. 1 is a block diagram for explaining a water heater 1 of the present invention.
In the figure:
1 Water heater
11 st water quantity sensor
12 circulation pump
13 bypass server
14 nd 2 nd water quantity sensor
15 temperature sensor for water
16 heat exchanger
17 outlet water temperature sensor
18 water quantity server
19 one-way valve
20 path of combustion gas
21 control part
Detailed Description
Hereinafter, a water heater 1 according to the present invention will be described with reference to fig. 1.
The water heater 1 is a gas water heater capable of operating in a cycle instant heating mode and a normal hot water mode. And for the convenience of construction, an independent instant heating circulation water return pipeline interface is not arranged, but the water outlet is connected with the water inlet through the one-way valve 2, so that at least one part of the water supply pipeline is used as the instant heating circulation water return pipeline. However, although the water supply line may be directly used as the circulation line, the water return line may be a separate water return line from the water supply line.
Here, the normal hot water mode is a one-way flow mode in which water is heated in the water heater 1 from the water inlet and then is discharged from the water outlet, and when a hot water faucet connected to the water outlet is closed, the flow of water is stopped.
On the other hand, the circulation-heating mode is a mode in which water from the water inlet is heated in the water heater 1 and then is discharged from the water outlet, and water is circulated to the water inlet and enters the water inlet again when, for example, a faucet connected to the water outlet is closed.
The water heater 1 includes, in order from a water inlet: a 1 st water amount sensor 11, a circulation pump 12, a bypass server 13, a 2 nd water amount sensor 14, an inlet water temperature sensor 15, a heat exchanger 16, an outlet water temperature sensor 17, and a water amount server 18. In which a bypass line is connected in parallel to the serial path of the 1 st water quantity sensor 11 and the circulation pump 12, and is provided to bypass the circulation pump 12, and a check valve 19 is provided on the bypass line.
The water heater 1 further includes a gas passage 20 through which gas is supplied, and a control unit 21 for controlling the water heater 1.
Water from a water supply source flows into a water inlet of the water heater 1. Here, the water supply source refers to general municipal water supply such as municipal tap water. In addition, the water supply source is also directly connected with the cold water faucet.
And heated hot water flows out of a water outlet of the water heater 1. In addition, the water outlet is also connected with a hot water tap.
Between the water inlet and the water outlet of the water heater, a check valve 2 is connected to prevent water from flowing directly from the water inlet to the water outlet.
The 1 st water amount sensor 11 measures the amount of water flowing through the water flow. Here, the 1 st water amount sensor is provided between circulation pump 12 and the water inlet of the water heater, that is, at a position upstream of circulation pump 12, but the present invention is not limited thereto, and may be positioned downstream of circulation pump 12. That is, it is sufficient to provide a bypass line connected in parallel with circulation pump 12.
The circulation pump 12 is a pump for circulating water through a pipe connected between the water inlet and the water outlet of the water heater 1.
The bypass servo 13 adjusts the amount of water fed to the heat exchanger 16 out of the inflowing water stream and the amount of water fed directly downstream of the heat exchanger 16 by bypassing the heat exchanger 16.
The 2 nd water amount sensor 14 measures the amount of water flowing through the water flow. It is preferable to use the same components as those of the 1 st water level sensor 11. Here, the 2 nd water amount sensor is provided downstream of both the bypass line and the circulation pump 12, that is, in series with the parallel line of the bypass line and the circulation pump 12.
The inlet water temperature sensor 15 measures the temperature of the water flowing into the heat exchanger 16.
The heat exchanger 16 exchanges heat with the inflow water, burns the gas from the gas passage 20, and heats the water from the water inlet. However, the present invention is not limited to this. Energy sources other than gas may also be used to supply heat to the heat exchanger 16, such as electricity, fossil fuels, hydrogen energy, and the like.
The outlet water temperature sensor 17 measures the temperature of the water flow flowing out of the heat exchanger 16.
The water amount server 18 measures the amount of water flowing to the water outlet.
And a check valve 19 provided in the bypass line to prevent the flow of water from the circulation pump 12 from flowing back to the water inlet through the bypass line.
In the water heater 1, the control unit 21 controls the bypass server 13, the heat exchanger 16, and the water volume server 18 based on the water temperature detection values from the inlet water temperature sensor 15 and the outlet water temperature sensor 17 and the water volume detection values from the 1 st water volume sensor 11 and the 2 nd water volume sensor 14, thereby outputting hot water at a temperature set by a user. Since the structure for controlling the water temperature and the like is known and is not closely related to the technical problems to be solved by the present invention, the description thereof will be omitted.
Here, the control unit 12 may control the water discharge of the water heater only based on the measured value of the 2 nd water quantity sensor 14, or may use the water quantity detection values of the 1 st water quantity sensor 11/the 2 nd water quantity sensor 14 in a manner of being discriminated according to the selected mode. For example, the water amount detection value of the 1 st water amount sensor 11 is used in the circulation heating mode, and the water amount detection value of the 2 nd water amount sensor 14 is used in the normal hot water mode.
In the circulation-heating mode, control unit 21 generates a control signal for operating circulation pump 12, and in the normal hot-water mode, does not generate a control signal for operating circulation pump 12.
The utility model discloses an in water heater 1, control unit 21 acquires the 1 st water yield of 1 st water yield sensor 11 survey. Control unit 21 determines that a malfunction has occurred in circulation pump 12 when the 1 st water amount acquired in the case where a control signal for operating circulation pump 12 is not issued exceeds the 1 st predetermined value.
Here, the 1 st predetermined value may be set as appropriate in accordance with the actual line resistance, and may be equal to or greater than the static flow rate value when the circulation pump 12 is not operating, or may be added with a predetermined measurement error margin by the 1 st water quantity sensor 11.
The control unit 21 may determine that the circulation pump is out of operation when the 1 st water amount acquired when the control signal for operating the circulation pump 12 is issued is less than the 2 nd predetermined value.
Here, the 2 nd predetermined value may be appropriately set according to the actual line resistance, and may be equal to or less than the dynamic flow rate value when the circulation pump 12 is operated, or may be added with a predetermined measurement error margin by the 1 st water quantity sensor 11.
The water heater 1 of the present invention may further include a warning unit (not shown) and may alarm in a sound/display manner. When determining that the malfunction of circulation pump 12 occurs, control unit 21 controls the warning unit to warn of the malfunction.
Here, the warning unit may be a visual prompting device such as a status display or an indicator lamp provided in the water heater 1, or may be an audio prompting device such as a speaker or a buzzer.
The utility model discloses still include a heating system, include: the water heater comprises a water heater 1 and a circulating pipeline for connecting a water inlet and a water outlet of the water heater 1. Here, the circulation line may directly use a water supply line, or may use a water return line independent from the water supply line.
According to the utility model discloses thereby, thereby can accurately detect the trouble improvement reliability of circulating pump to can avoid the extravagant problem of electric power that the malfunction of maloperation arouses.
The present invention has been described above, but the above-described embodiments are merely specific examples for implementing the present invention, and are not intended to limit the scope of the present invention, and the present invention includes the technical solutions described in the claims and all equivalent solutions thereof, and any one or more of them may be replaced/combined by those skilled in the art.
Claims (10)
1. The utility model provides a water heater, can switch circulation instant heating mode and ordinary hot water mode and work which characterized in that:
the method comprises the following steps: a water inlet into which water from a water supply source flows;
a water outlet for flowing out the heated hot water;
a circulation pump circulating hot water in a circulation line connected between the water inlet and the water outlet of the water heater;
a control unit for generating a control signal for operating the circulation pump in the circulation immediate heating mode and not generating a control signal for operating the circulation pump in the normal hot water mode;
a bypass line configured to bypass the circulation pump; and the number of the first and second groups,
and a 1 st water amount detection unit provided in series with the circulation pump and in parallel with the bypass line.
2. The water heater of claim 1,
the control part acquires the 1 st water quantity measured by the 1 st water quantity detection part,
the control unit determines that the circulation pump has a malfunction when the 1 st water amount obtained when the control signal for operating the circulation pump is not transmitted exceeds a 1 st predetermined value.
3. The water heater of claim 2,
further comprising: a warning part for alarming by voice/display,
the control unit controls the warning unit to warn the outside when it is determined that the malfunction of the circulation pump has occurred.
4. The water heater of claim 1,
the 1 st water amount detection unit is provided upstream of the circulation pump.
5. The water heater of claim 1,
further comprising: a 2 nd water amount detection part disposed at a downstream side of the bypass line and the circulation pump,
the control part controls the water outlet of the water heater according to the measured value of the 2 nd water quantity detection part.
6. The water heater of claim 1,
a check valve is disposed on the bypass line to prevent water from the circulation pump from flowing to the water inlet.
7. The water heater of claim 1,
the control part acquires the 1 st water quantity measured by the 1 st water quantity detection part,
the control unit determines that the circulation pump is out of operation when the 1 st water amount acquired when the control signal for operating the circulation pump is issued does not reach the 2 nd predetermined value.
8. The water heater of claim 7,
further comprising: a warning part for alarming by voice/display,
the control unit controls the warning unit to warn the outside when it is determined that the failure of the circulation pump has occurred.
9. The water heater of claim 5,
the 2 nd water amount detection unit is composed of the same components as those of the 1 st water amount detection unit.
10. A hot water system, comprising:
the water heater of claim 1; and the number of the first and second groups,
the circulation pipeline is connected with the water inlet and the water outlet of the water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922357003.1U CN211903266U (en) | 2019-12-24 | 2019-12-24 | Water heater and hot water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922357003.1U CN211903266U (en) | 2019-12-24 | 2019-12-24 | Water heater and hot water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211903266U true CN211903266U (en) | 2020-11-10 |
Family
ID=73293500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922357003.1U Active CN211903266U (en) | 2019-12-24 | 2019-12-24 | Water heater and hot water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211903266U (en) |
-
2019
- 2019-12-24 CN CN201922357003.1U patent/CN211903266U/en active Active
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