Hot Water Device for Bathtub

Abstract

The present invention provides a hot water device for bathtub in which water is not wasted to allow energy saving and at the same time it is possible to save a trouble of adjusting the temperature of water for bathtub supplied to the bathtub to a temperature desired by the user during bathing. In the hot water device for bathtub of the invention, the water for bathtub having its temperature varied by the controller to temperature desired by the user during bathing is supplied to a bathtub. Accordingly, the temperature adjustment using hot water is not needed, and thus water is not wasted to allow energy saving and at the same time it is possible to save a trouble of adjusting the temperature of hot water in the bathtub to a temperature desired by the user during bathing.

1 . A hot water device for bathtub comprising: a hot water storage tank which stores high-temperature water; water supplying means for supplying low-temperature water; and temperature setting means allowing setting of the temperature of water for bathtub to be supplied to a bathtub, the hot water device for bathtub mixing high-temperature water supplied from the hot water storage tank and low-temperature water supplied from the water supplying means and then supplying water for bathtub of a preset temperature to the bathtub,
 wherein the hot water device for bathtub includes outdoor air temperature information acquiring means for acquiring prescribed information on outdoor air temperature; and   control means for varying the temperature of water for bathtub to a temperature lower than the preset temperature when the outside air temperature acquired by the outdoor air temperature information acquiring means is higher than a prescribed reference temperature, or varying the temperature of water for bathtub to a temperature higher than the preset temperature when the outside air temperature acquired by the outdoor air temperature information acquiring means is lower than the prescribed reference temperature.   
   
   
       2 . The hot water device for bathtub according to  claim 1 , further comprising a mixing valve which mixes high-temperature water supplied from the hot water storage tank and low-temperature water supplied from the water supplying means to produce water for bathtub,
 wherein the control means controls the opening of the mixing valve and thereby varies the preset temperature of water for bathtub to be supplied to the bathtub.   
   
   
       3 . The hot water device for bathtub according to  claim 1 , wherein an outdoor air temperature sensor constitutes the outdoor air temperature information acquiring means. 
   
   
       4 . The hot water device for bathtub according to  claim 1 , wherein the outdoor air temperature information acquiring means acquires an outdoor air temperature from predetermined meteorological data. 
   
   
       5 . The hot water device for bathtub according to  claim 2 , wherein an outdoor air temperature sensor constitutes the outdoor air temperature information acquiring means. 
   
   
       6 . The hot water device for bathtub according to  claim 2 , wherein the outdoor air temperature information acquiring means acquires an outdoor air temperature from predetermined meteorological data.