Bypass thermostatic regulating valve and gas water heater including it

Abstract

The invention discloses a bypass constant temperature regulating valve and a gas water heater comprising the valve. The bypass thermostatic regulating valve includes: a housing and a valve seat located inside the housing, memory alloy spring, elastic member, valve core, and flexible seal; the housing is provided with a cold water inlet, a hot water inlet, and a hot water outlet; the valve The seat is fixed relative to the housing; the valve core is a hollow cylindrical member, the first end of the valve core is connected to the cold water inlet through a flexible seal, and the second end of the valve core is set facing the valve seat; the memory alloy spring biases the valve core to making the valve core move toward the first direction; the elastic member biases the valve core so that the valve core moves toward the second direction. The bypass thermostatic regulating valve adopts a memory alloy spring, which can adjust the intake of cold water according to the temperature of the hot water flowing through, so as to adjust the temperature of the mixed water flowing out, and avoid the temperature of the mixed water flowing out from being too high or too low. The gas water heater can adjust the outlet water temperature to prevent the outlet water temperature from rising or dropping suddenly.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a bypass thermostatic regulating valve and a gas water heater comprising the valve. Background technique [0002] The outlet water temperature of the existing gas water heater is adjusted by adjusting the heating range. If the user needs to adjust the outlet water temperature again, it can only be adjusted through the water mixing valve of the faucet. However, the adjustment of the heating range of the gas water heater has a hysteresis. When the hot water supply is lowered, the internal heating range of the gas water heater will be reduced correspondingly, that is, the firepower will be reduced to avoid the rise of the water temperature, but the heat exchanger cannot cool down quickly, so the outlet water temperature of the gas water heater will still rise rapidly in a short period of time. High, it is easy to burn the user. Similarly, when the user increases the hot water...

AI Technical Summary

Problems solved by technology

[0002] The outlet water temperature of the existing gas water heater is adjusted by adjusting the heating range. If the user needs to adjust the outlet water temperature again, it can only be adjusted through the water mixing valve of the faucet. However, the adjustment of the heating range of the gas water heater has a hysteresis. When the hot water supply is lowered, the internal heating range of the gas water heater will be reduced correspondingly, that is, the firepower will be reduced to avoid the rise of the water temperature, but the heat exchanger cannot cool down quickly, so the outlet water temperature of the gas water heater will still rise rapidly in a short period of time. High, it is easy to burn the user. Similarly, when the user increases the hot water supply, the internal heating range of the gas water heater will be increased accordingly, that is, the firepower will be increased to avoid the water temperature from dropping, but the heat exchanger cannot heat up quickly, so it will still cause The outlet water temperature of the gas water heater drops rapidly in a short period of time, which is easy to freeze the user

[0003] When the user adjusts the water output of the existing gas water heater, the water temperature will be hot and cold, resulting in extremely poor user experience

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