Gas water heater, heat exchanger thereof and heat exchanger shell structure
A technology of gas water heater and shell structure, which is applied in the direction of water heater, fluid heater, lighting and heating equipment, etc. It can solve the problems of small contact area and insufficient heat exchange efficiency, and achieve large heat exchange area and short heat conduction distance , the effect of increasing the contact area
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Embodiment 1
[0029] see figure 1 , a heat exchanger shell structure of a gas water heater, comprising:
[0030] Heat exchanger shell 2;
[0031] like figure 1 As shown, the heat exchanger shell 2 is arranged with a water groove 5, and as figure 2 , 3 As shown, the heat exchanger shell 2 is covered on the combustion chamber 1 of the gas water heater;
[0032] like image 3 , 4 As shown, a water flow channel 6 for water flow is formed between the water groove 5 and the outer wall of the combustion chamber 1;
[0033] Both ends of the water flow channel 6 communicate with the water inlet pipe 3 and the water outlet pipe 4 of the heat exchanger respectively.
[0034] Specifically, the water passage groove 5 includes several sections of the first groove 501 .
[0035] Preferably, as figure 1 , 2 As shown, each section of the first groove 501 is connected end to end in turn, so that the water passage groove 5 is spirally arranged on the heat exchanger shell 2 .
[0036] In the embodi...
Embodiment 2
[0039] This embodiment is further improved on the basis of embodiment 1, as Figure 5 , 6 As shown, the main differences are:
[0040] Each section of the first groove 501 is arranged horizontally, and two adjacent sections of the first groove 501 communicate with each other.
[0041] Specifically, the water passage groove 5 further includes several sections of second grooves 502 , and the second grooves 502 are used to communicate with two adjacent sections of the first groove 501 .
[0042] Preferably, as Figure 7 , 8 As shown, each section of the first groove 501 is provided with a water barrier 7 .
[0043] Preferably, the second groove forms a water inlet and a water outlet on two adjacent sections of the first groove;
[0044] like Figure 9 As shown, the water baffle is arranged near the water outlet, and the water baffle is arranged on the side of the water outlet near the water inlet.
[0045] In this embodiment, a water barrier is provided in each section of ...
Embodiment 3
[0048] This embodiment provides a heat exchanger for a gas water heater, which includes a combustion chamber, a water inlet pipe and a water outlet pipe, and also includes:
[0049] The heat exchanger shell structure described in Embodiment 1 or Embodiment 2.
[0050] like figure 2 or Image 6 As shown, preferably, the combustion chamber includes a combustion chamber casing 1;
[0051] like Figure 8 , 10 As shown, the outer wall of the combustion chamber housing 1 is arranged with an expansion groove 8 corresponding to the water passage groove 5, and the expansion groove 8 and the water passage groove 5 form the Water flow channel 5.
[0052] In the embodiment of the present invention, by arranging expansion grooves on the outer wall of the combustion chamber housing, the expansion grooves are combined with the water passage grooves to form a water flow channel; since the expansion grooves are formed by bending toward the inner side of the combustion chamber housing, fu...
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