Constant-temperature gas water heater and constant-temperature control method

A gas water heater, constant temperature control technology, applied in the direction of fluid heaters, lighting and heating equipment, etc., can solve the problems of low overall temperature of the pipeline, rising return water temperature, frequent start-up of preheating cycle devices, etc., and achieve economical and reasonable operation , the effect of uniform temperature

Active Publication Date: 2016-06-01
GUANGDONG MACRO GAS APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing preheating cycle device can realize the function of cyclic preheating, due to the continuous increase of the return water temperature during the cyclic heating process and the lack of post-stirring process, the water temperature in the circulation pipe after the heating is not uniform and cannot reach Ideal warm-up effect, affecting bathing comfort
[0003] The applicant has shown through experimental tests that when the preheating temperature is set to 48°C, the preheating outlet temperature can be as high as 60°C using the existing preheating circulation device, which may lead to excessively high outlet water temperature at some water points, causing direct Burn safety hazard
And if the setting temperature is not high, it is easy to cause the overall temperature of the pipeline to be too low after the preheating is completed, which will seriously affect the comfort of the first bathing
In addition, when a certain preheating temperature is set, the heat dissipation effect of the pipeline is roughly the same, if the water temperature is uneven, it is easy to cause the preheating cycle device to start frequently, which is not conducive to bathing, and also affects the service life of the preheating cycle device

Method used

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  • Constant-temperature gas water heater and constant-temperature control method
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Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, a constant temperature gas water heater includes: a gas water heater body 1, a circulation pipe 2 connected to the gas water heater body 1, and a circulation device 3 installed on the circulation pipe 2; it is characterized in that the circulation device 3 includes A forward circulation module and a reverse circulation module, the fluid in the circulation pipeline circulates forward under the action of the forward circulation module or reversely circulates under the action of the reverse circulation module.

[0030] Such as figure 2 As shown, the circulation device 3 includes: a connecting pipeline 3-1, a circulation pump 3-2 that can be forward and reversed installed on the connecting pipeline 3-1, a temperature sensor 3-3, and the circulation pump 3-2, The controller 3-4 connected to the signal of the temperature sensor 3-3; the controller 3-4 controls the forward rotation or reverse rotation of the circulation pump 3-2 according to the si...

Embodiment 2

[0035] Such as Figure 4 As shown, the constant temperature gas water heater provided in this embodiment is basically the same in structure as that in Embodiment 1, the difference is that:

[0036] The circulation device 3 includes: a connecting pipeline 3-1, a circulation pump 3-2 installed on the connecting pipeline 3-1, a temperature sensor (not shown), a switchable steering first four-way valve 3-6 and an adjustable The second four-way valve 3-7 for switching steering, the first four-way valve 3-6 and the second four-way valve 3-7 are respectively connected to the two ends of the circulating pump 3-2, and a controller 3-4 is connected with the temperature The sensor, the first four-way valve 3-6, and the second four-way valve 3-7 are connected with signals; the controller 3-4 controls the first four-way valve 3-6 and the second four-way valve 3-6 according to the signal fed back by the temperature sensor 7 Switch the steering to realize the conversion of the circulation d...

Embodiment 3

[0039] Such as Figure 5 As shown, the constant temperature gas water heater provided in this embodiment is basically the same in structure as that in Embodiment 1, the difference is that:

[0040] The circulation device 3 comprises: a connecting pipeline 3-1, a temperature sensor (not shown) installed on the connecting pipeline 3-1, a first circulation pump 3-8 and a first shut-off valve 3-9, the first circulation pump 3-8 and the first shut-off valve 3-9 form a forward circulation module, and a second circulation pump 3-10 and a second shut-off valve 3-11 are connected in parallel at both ends of the forward circulation module, and the second circulation pump 3-10 The installation direction of the first circulation pump 3-8 is opposite to the installation direction, the second circulation pump 3-10 and the second shut-off valve 3-11 constitute a reverse circulation module, and a controller 3-4 communicates with the temperature sensor, forward Circulation module, reverse circu...

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Abstract

The invention discloses a constant-temperature gas water heater which comprises a gas water heater body, a circulating pipeline connected to the gas water heater body and a circulating device mounted on the circulating pipeline. The constant-temperature gas water heater is characterized in that the circulating device comprises a forward circulating module and a backward circulating module, and fluid in the circulating pipeline is circulated forwards under the action of the forward circulating module or circulated backwards under the action of the backward circulating module. The forward circulating module and the backward circulating module are arranged on the circulating device, the circulating water flow direction in the circulating pipeline of the gas water heater can be controlled, and therefore the constant-temperature gas water heater is precisely controlled to be turned on and off; and the gas water heater runs economically and reasonably in the preheating process, it is ensured that the temperature of all sections of the circulating pipeline is even after preheating is completed, and the functional defects of overheating, supercooling, sudden temperature changes and the like of a traditional circulating device are overcome. The invention further discloses a constant-temperature control method.

Description

technical field [0001] The invention relates to the technical field of fluid heaters, in particular to a constant temperature gas water heater and a constant temperature control method. Background technique [0002] For improving the comfort of bathing, some gas water heaters are externally connected with a preheating circulation device at present. Although the existing preheating cycle device can realize the function of cyclic preheating, due to the continuous increase of the return water temperature during the cyclic heating process and the lack of post-stirring process, the water temperature in the circulation pipe after the heating is not uniform and cannot reach The ideal warm-up effect affects the bathing comfort. [0003] The applicant has shown through experimental tests that when the preheating temperature is set to 48°C, the preheating outlet temperature can be as high as 60°C using the existing preheating circulation device, which may lead to excessively high out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H9/20
CPCF24H9/2035
Inventor 余少言仇明贵刘兵陈国孙智
Owner GUANGDONG MACRO GAS APPLIANCE
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