CN203785225U - Constant-temperature gas water heater - Google Patents
Constant-temperature gas water heater Download PDFInfo
- Publication number
- CN203785225U CN203785225U CN201420043442.XU CN201420043442U CN203785225U CN 203785225 U CN203785225 U CN 203785225U CN 201420043442 U CN201420043442 U CN 201420043442U CN 203785225 U CN203785225 U CN 203785225U
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- China
- Prior art keywords
- water
- heat exchanger
- outlet pipeline
- main heat
- temperature sensor
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Abstract
The utility model discloses a constant-temperature gas water heater. The constant-temperature gas water heater comprises a circulating heating system, wherein the circulating heating system comprises a circulating loop and a water outlet pipeline, one end of the water outlet pipeline is connected with a water source, the other end is connected with a water consumption site, the circulating loop is provided with a main heat exchanger for heating the circulating water in the circulating loop, and a secondary heat exchanger for heating cold water in the water outlet pipeline is arranged between the circulating loop and the water outlet pipeline; the circulating loop is also provided with a three-way valve, a water inlet of the three-way valve is communicated with a water discharging port of the main heat exchanger, one water outlet of the three-way valve is communicated with a heat medium inlet of the secondary heat exchanger, and the other water outlet of the three-way valve is communicated with the water consumption site. According to the constant-temperature gas water heater, the secondary heat exchanging of the cold water in the water outlet pipeline is realized through the main heat exchanger and the secondary heat exchanger, and the problem of the scalding at high temperature caused by the overheating of the cold water can be avoided.
Description
Technical field
The utility model relates to a kind of gas heater, relates in particular to a kind of constant temp gas water heater.
Background technology
At present, most gas heaters of the prior art all adopt fuel gas buring to produce after heat, directly heat copper main heat exchanger; current provide to using water spot after main heat exchanger heating; the advantage of this gas heater be simple in structure, volume compact, be easy to install; but comfort level is poor; external condition (cold water temperature, flow, gaseous-pressure; strong wind etc.) once change, water temperature should not be controlled; Especially summer, a lot of domestic running water flows (as 4L/min) on the low side, but cold water temperature higher (as 30 degree), the minimum heating power of gas heater of the prior art is generally at 5-6kW, and current are after such gas heater heating, and leaving water temperature will reach 49 degree left and right, far beyond the have a bath normal temperature of 38-42 degree of normal person, if discharge is less, leaving water temperature will be higher, and the danger of scalding very easily occurs.
Utility model content
The problem existing for prior art, the purpose of this utility model is to provide a kind of constant temp gas water heater, and this gas heater can ensure that water temperature is constant, avoids water temperature that high temperature occurs higher than design temperature and scalds.
The purpose of this utility model is achieved through the following technical solutions:
A kind of constant temp gas water heater, comprises loop heating system, and described loop heating system comprises closed circuit and outlet pipeline, and described outlet pipeline one end is connected with water source, the other end be connected with water spot, wherein,
On described closed circuit, be provided with the main heat exchanger for recirculated water in Heating Cyclic loop, between described closed circuit and described outlet pipeline, be provided with the secondary heat exchanger for described outlet pipeline cold water is heated;
On described closed circuit, be also provided with triple valve, the water inlet of described triple valve is communicated with the discharge outlet of described main heat exchanger, and a delivery port of described triple valve is communicated with the thermal medium import of described secondary heat exchanger, and another delivery port is communicated with water spot with described.
Further, described with being also provided with water return pipeline between water spot and the water inlet of described main heat exchanger.
Further, described water return pipeline is connected on described outlet pipeline, and described outlet pipeline is connected with described closed circuit, and described closed circuit is communicated with the water inlet of described main heat exchanger.
Further, on described outlet pipeline, be provided with water flow sensor or discharge switch.
Further, in described loop heating system, be provided with temperature sensor.
Further, described temperature sensor comprises the first temperature sensor, the second temperature sensor and three-temperature sensor, described the first temperature sensor is arranged on the water inlet of described main heat exchanger, described the second temperature sensor is arranged on the discharge outlet of described main heat exchanger, and described three-temperature sensor is arranged on described triple valve and described with between water spot.
Further, described main heat exchanger is combustion gas fire row, and described secondary heat exchanger is plate type heat exchanger.
Further, in described closed circuit, be provided with circulating pump, in described outlet pipeline, be provided with out water pump.
The constant temp gas water heater that the utility model provides has been realized the secondary heat exchange to cold water by main heat exchanger and secondary heat exchanger, avoid occurring that the problem that high temperature is scalded is occurred by superheated cold water, in addition, the utility model can also reclaim heating to cold water remaining in gas heater pipeline, avoid water waste, reduce and waited for the time of flowing out hot water, ensured the water temperature with water spot simultaneously, thereby improved the comfort level of gas heater.
Brief description of the drawings
Fig. 1 is the loop heating system schematic diagram of a kind of preferred constant temp gas water heater of the utility model;
Fig. 2 is the loop heating system schematic diagram of the another kind of preferred constant temp gas water heater of the utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, a preferred embodiment of the present utility model is described in detail.Wherein identical parts represent with identical Reference numeral.It should be noted that, word 'fornt', 'back', " left side ", " right side ", "up" and "down" that use is described below refer to the direction in accompanying drawing, and word " interior " and " outward " refer to respectively the direction towards or away from specific features geometric center.
As depicted in figs. 1 and 2, the utility model provides a kind of constant temp gas water heater, comprise loop heating system, described loop heating system comprises closed circuit 1 and outlet pipeline 2, described outlet pipeline 2 one end are connected with water source, the other end be connected with water spot, on described closed circuit 1, be provided with the main heat exchanger 3 for Heating Cyclic loop 1 interior recirculated water, between described closed circuit 1 and described outlet pipeline 2, be provided with the secondary heat exchanger 4 for described outlet pipeline 2 cold water are heated.
The utility model utilizes described main heat exchanger 3 to heat the recirculated water in described closed circuit 1, recirculated water after heating circulates in described closed circuit 1, cold water in the time that the recirculated water after described heating passes through described secondary heat exchanger 4 and in described outlet pipeline 2 carries out heat exchange, cold water in described outlet pipeline 2 is heated, and the flow direction is constantly consumed with water spot, recirculated water in described closed circuit 1 is after secondary heat exchanger 4 heat exchange, temperature declines and again flows to main heat exchanger 3 and heats, so constantly circulation, recirculated water in described closed circuit 1 is realized the heating to the cold water in outlet pipeline 2 as thermal medium.
On closed circuit 1 of the present utility model, be also provided with triple valve 5, the water inlet of described triple valve 5 is communicated with the delivery port of described main heat exchanger 3, a delivery port of described triple valve 5 is communicated with the thermal medium import of described secondary heat exchanger 4, another delivery port is communicated with water spot with described, and the triple valve 5 that the present embodiment adopts is preferably electric T-shaped valve.
In the time closing the tap of using water spot, open described triple valve 5 and the described delivery port being communicated with water spot, close the delivery port being communicated with the thermal medium import of described secondary heat exchanger 4 simultaneously, make recirculated water direct arrival water spot after heating in described closed circuit 1, in order to using, in the time opening the tap of using water spot, discharge the hot water of above-mentioned deposit, water generates in described outlet pipeline 2 is flowed, now, close described triple valve 5 and the described delivery port being communicated with water spot, and the delivery port that is communicated with the thermal medium import of described secondary heat exchanger 4 of unlatching, recirculated water after heating is circulated in described closed circuit 1, when the cold water of the circulating water flow after heating during through described secondary heat exchanger 4 and in described outlet pipeline 2 carries out heat exchange, thereby the current in heating outlet pipeline 2, water in described outlet pipeline 2 is delivered to after being heated continuously with water spot, recirculated water in described closed circuit 1 is after described secondary heat exchanger 4 heat exchange, temperature declines and again flows to described main heat exchanger 3 and again heats, so repeatedly, realize the post bake of recirculated water to the cold water in outlet pipeline 2, thereby avoid the current in described outlet pipeline 2 that the problem of scalding is occurred by superheated.
In order effectively to monitor the flow regime of water in described outlet pipeline 2, the present embodiment is preferably provided with water flow sensor or discharge switch on described outlet pipeline 2, when water in described water flow sensor is monitored out described outlet pipeline 2 occurs to flow, or when in described discharge switch, water occurs to flow, the circuit board of described gas heater sends signal to described triple valve 4, close and be communicated with the described delivery port with water spot, open the delivery port being communicated with the thermal medium import of described secondary heat exchanger 4 simultaneously, and then make the water heating through described secondary heat exchanger 4 in described outlet pipeline 2 to flowing with water spot.
For the mobile power that provides of water in closed circuit 1 and outlet pipeline 2 is provided, the present embodiment preferably arranges circulating pump in described closed circuit 1, and set out water pump in described outlet pipeline 2, what those skilled in the art should understand that is, described circulating pump and described in to go out water pump can be any water pump known in those skilled in the art, repeat no more herein.
The utility model is by controlling the temperature of the recirculated water in described closed circuit 1, avoid cold water in described outlet pipeline 2 by superheated, and then avoid that cold water is heated to be exceeded design temperature and scald, utilize recirculated water to carry out post bake and can effectively ensure by the water temperature of water spot constant.
As a kind of preferred version of the present utility model, the main heat exchanger 3 of the present embodiment is combustion gas fire row, and described secondary heat exchanger 4 is plate type heat exchanger.The described combustion gas fire row efficiency of heating surface is high, can heat the recirculated water in closed circuit 1 rapidly, and plate type heat exchanger can continue and stably heat exchange the cold water in outlet pipeline 2, be therefore easier to control heating-up temperature, be convenient to the hot water that water temperature is constant is provided with water spot.Certainly, above-mentioned plate type heat exchanger is only the preferred secondary heat exchanger of the one of the present embodiment, and the utility model can also adopt other applicable heat exchanger known in those skilled in the art, and for example, described secondary heat exchanger can also adopt double pipe heat exchanger.In order to extend the service life of this gas heater, main heat exchanger 3 in the present embodiment is preferably made of copper, described secondary heat exchanger 4 is preferably made up of stainless steel, in addition, the utility model can also improve further by increasing the wall thickness of main heat exchanger 3 and secondary heat exchanger 4 service life and the reliability of this device.
As a kind of preferred version of the present utility model, as shown in Figure 1, described with being also provided with water return pipeline 6 between water spot and the water inlet of described main heat exchanger 3, the present embodiment utilizes water return pipeline 6 that the cold water of outlet pipeline 2 interior remnants is looped back to main heat exchanger 3 to heat, thereby use coolant-temperature gage that water spot flows out suitable, be convenient to direct use, reduce the discharge capacity of cold water.The present embodiment also preferably arranges back water pump on described water return pipeline 6, and described back water pump provides power for cold-water reflux, avoid due to height or angle problem cause cold water in pipeline 2 cannot automatic back flow to main heat exchanger 3.Visible, the utility model utilizes water return pipeline 6 and back water pump can reduce the discharge capacity of cold water, reduce and wait for the time of flowing out hot water, cold water in pipeline is looped back in main heat exchanger 3 and is heated by water return pipeline 6, both avoid waste water source, improved again the comfort level of gas heater simultaneously.
On the basis of above-described embodiment, as shown in Figure 2, the utility model is preferably connected to described water return pipeline 6 on described outlet pipeline 2, described outlet pipeline 2 is connected with described closed circuit 1, described closed circuit 1 is communicated with the water inlet of described main heat exchanger 3, thereby make water return pipeline 6 and described part outlet pipeline 2 merge into a pipeline, improve the utilization rate of pipeline, and then contribute to reduce the cost of the loop heating system of preparing gas heater.
As a kind of preferred version of the present utility model, in described loop heating system, be provided with temperature sensor, more preferably, described temperature sensor comprises the first temperature sensor 7, the second temperature sensor 8 and three-temperature sensor 9, as depicted in figs. 1 and 2, the water inlet of described main heat exchanger 3 arranges described the first temperature sensor 7, and the delivery port of described main heat exchanger 3 arranges described the second temperature sensor 8, described triple valve 5 and described with described three-temperature sensor 9 is set between water spot.Certainly, a kind of preferred version that three temperature sensors are only the present embodiment is set in loop heating system, the utility model can also assemble the sensor of varying number according to actual needs, repeats no more herein.The utility model passes through at diverse location set temperature sensor, realize the water temperature in pipeline has effectively been monitored, in the time monitoring out water temperature over-high, can stop in time the work of described main heat exchanger 3, reduce the temperature of current in pipeline, avoid current to be scalded by superheated.
In sum, the constant temp gas water heater that the utility model provides has been realized the secondary heat exchange to cold water by main heat exchanger and secondary heat exchanger, avoid occurring that the problem that high temperature is scalded is occurred by superheated cold water, in addition, the utility model can also reclaim heating to cold water remaining in gas heater pipeline, has avoided water waste, has reduced and has waited for the time of flowing out hot water, ensure the water temperature with water spot simultaneously, thereby improved the comfort level of gas heater.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of the each embodiment technical scheme of the utility model.
Claims (8)
1. a constant temp gas water heater, is characterized in that, comprises loop heating system, and described loop heating system comprises closed circuit and outlet pipeline, and described outlet pipeline one end is connected with water source, the other end be connected with water spot, wherein,
On described closed circuit, be provided with the main heat exchanger for recirculated water in Heating Cyclic loop, between described closed circuit and described outlet pipeline, be provided with the secondary heat exchanger for described outlet pipeline cold water is heated;
On described closed circuit, be also provided with triple valve, the water inlet of described triple valve is communicated with the discharge outlet of described main heat exchanger, and a delivery port of described triple valve is communicated with the thermal medium import of described secondary heat exchanger, and another delivery port is communicated with water spot with described.
2. constant temp gas water heater according to claim 1, is characterized in that, described with being also provided with water return pipeline between water spot and the water inlet of described main heat exchanger.
3. constant temp gas water heater according to claim 2, is characterized in that, described water return pipeline is connected on described outlet pipeline, and described outlet pipeline is connected with described closed circuit, and described closed circuit is communicated with the water inlet of described main heat exchanger.
4. constant temp gas water heater according to claim 1, is characterized in that, is provided with water flow sensor or discharge switch on described outlet pipeline.
5. constant temp gas water heater according to claim 1, is characterized in that, in described loop heating system, is provided with temperature sensor.
6. constant temp gas water heater according to claim 5, it is characterized in that, described temperature sensor comprises the first temperature sensor, the second temperature sensor and three-temperature sensor, described the first temperature sensor is arranged on the water inlet of described main heat exchanger, described the second temperature sensor is arranged on the discharge outlet of described main heat exchanger, and described three-temperature sensor is arranged on described triple valve and described with between water spot.
7. constant temp gas water heater according to claim 1, is characterized in that, described main heat exchanger is combustion gas fire row, and described secondary heat exchanger is plate type heat exchanger.
8. constant temp gas water heater according to claim 1, is characterized in that, in described closed circuit, is provided with circulating pump, in described outlet pipeline, is provided with out water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420043442.XU CN203785225U (en) | 2014-01-23 | 2014-01-23 | Constant-temperature gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420043442.XU CN203785225U (en) | 2014-01-23 | 2014-01-23 | Constant-temperature gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203785225U true CN203785225U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420043442.XU Expired - Fee Related CN203785225U (en) | 2014-01-23 | 2014-01-23 | Constant-temperature gas water heater |
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| CN (1) | CN203785225U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776155A (en) * | 2014-01-23 | 2014-05-07 | 威能(北京)供暖设备有限公司 | Temperature-constant gas water heater |
| CN106846740A (en) * | 2016-08-30 | 2017-06-13 | 广东乐惠购网络科技有限公司 | A kind of environment early warning system |
| CN111578505A (en) * | 2020-04-10 | 2020-08-25 | 宁波方太厨具有限公司 | Dual-purpose furnace and control method thereof |
-
2014
- 2014-01-23 CN CN201420043442.XU patent/CN203785225U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776155A (en) * | 2014-01-23 | 2014-05-07 | 威能(北京)供暖设备有限公司 | Temperature-constant gas water heater |
| CN106846740A (en) * | 2016-08-30 | 2017-06-13 | 广东乐惠购网络科技有限公司 | A kind of environment early warning system |
| CN111578505A (en) * | 2020-04-10 | 2020-08-25 | 宁波方太厨具有限公司 | Dual-purpose furnace and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20180123 |