A kind of water heater that has automatic conversion solar and gas combustion apparatus
At present, the water heater that everybody generally uses has gas heater and big sun energy water heater, these two kinds of water heaters are when using separately, though advantage is separately arranged, but deficiency is also arranged simultaneously, though easy to use as gas heater, it is bigger to consume energy, use cost is higher, though big sun energy water heater is energy-conservation, but be subjected to different regions, the restriction of the sunlight deficiency of Various Seasonal, water temperature is difficult to reach the requirement that people use sometimes, in order to address this problem, there is manufacturer in solar water heater, to increase electric heating system, but the power required owing to electrical heating is big, reaction time is slow, can not continuous water supply etc. defective, effect is bad in actual use, is difficult to promote the use of.
There is not the deficiency of above-mentioned electric heater in gas heater itself, therefore, how on the basis of gas heater, to increase some functions, big sun energy water heater and gas heater are organically combined, allow advantage separately be given full play to, such as, when meeting, the water temperature of solar water heater sets the hot water that directly uses solar water heater when requiring, when meeting to set when requiring, the water temperature of solar water heater do not heat again by combustion gas, and can realize control automatically, be a difficult problem of being badly in need of solution at present.
Once the someone considered independently solar water heater and gas heater are installed separately, and was connected with control valve by a series of pipeline, realized above-mentioned purpose, and this spline structure is very complicated, and it is big to manufacture difficulty, is inconvenient to install.
It is a kind of simple in structure that the purpose of this utility model is to provide, the water heater that has automatic conversion solar and gas combustion apparatus easy for installation.
The purpose of this utility model is achieved in that
A kind of water heater that has automatic conversion solar and gas combustion apparatus, comprise the water heater housing, gas burner, heat exchanger, gas control system, igniter, it is characterized in that also including automatic switch, wherein water inlet tube of water heater is connected with reversal valve in the automatic switch, a passage of the reversal valve in the automatic switch is connected with the water inlet pipe of heat exchanger after being connected in series a water flow switch by water pipe, another passage of reversal valve in the automatic switch is connected with outlet pipe by pipeline, and the outlet pipe of heat exchanger also is connected with outlet pipe.
Aforesaid a kind of water heater that has automatic conversion solar and gas combustion apparatus, it is characterized in that automatic switch is by electronic reversal valve, temperature detect switch (TDS) is formed, the temperature probe of temperature detect switch (TDS) can be contained in the water inlet tube of water heater, the control end of temperature detect switch (TDS) is directly received on the magnetic valve of electronic reversal valve, and electronic reversal valve is carried out directly control.
The utility model is simple in structure, and is easy to use, can directly be connected with the water side of solar water heater, when sunny, supply water by solar water heater, when temperature is lower than design temperature, can change automatically water is heated by combustion gas again, save the energy, and the automaticity height.And this water heater can normally use as gas heater separately during not with the supporting use of solar water heater.
Below in conjunction with accompanying drawing structure of the present utility model is done detailed explanation
Fig. 1 is a structural representation of the present utility model
Fig. 2 is a fundamental diagram of the present utility model
The utility model comprises water heater housing 1, gas burner 2, heat exchanger 3, gas control system 4, igniter 5, automatic switch 6, wherein water inlet tube of water heater 7 is connected with reversal valve 10 in the automatic switch 6, a passage of the reversal valve 10 in the automatic switch 6 is connected with the water inlet pipe of heat exchanger 3 by water pipe 14 serial connections one water flow switch 11 backs, another passage of reversal valve 10 in the automatic switch 6 is connected with outlet pipe 12 by pipeline 9, and the outlet pipe 8 of heat exchanger 3 also is connected with outlet pipe 12.
Automatic switch 6 is by electronic reversal valve 10, temperature detect switch (TDS) 13 is formed, the temperature probe 16 of temperature detect switch (TDS) 13 can be contained in the water inlet tube of water heater 7, and the control end of temperature detect switch (TDS) 13 is directly received on the magnetic valve of electronic reversal valve 10, and electronic reversal valve 10 is carried out directly control.
In order to prevent that hot water from flowing backwards, and is equipped with a check valve 15 on pipeline 9.
The utility model is connected water inlet tube of water heater 7 in use with the outlet pipe of solar water heater, the reversal valve 10 that the hot water that provides of solar water heater at first, the pipeline 7 of flowing through enter in the automatic switch 6 12 is sent hot water from pipeline 9 to outlet pipe.When water temperature does not reach when requiring, temperature probe 16 measures water temperature and is lower than setting value, and this moment, temperature detect switch (TDS) 13 sent signal, and 10 actions of control reversal valve disconnect this passage that is connected with pipeline 9, and connect another passage.At this moment, the reversal valve 10 of flow of hot water in automatic switch 6 that is flowed into by solar water heater enters heat exchanger 3 and lights heating by combustion gas and again hot water is delivered to outlet pipe 12 through the outlet pipe 8 of heat exchanger 3 and flow out.