초록 ▼

The invention provides a filtration system suited to be coupled in a water transfer circuit with a tub, pool, spa, or the like, and includes a housing or casing within which is provided a filter element through which the water passes during operation. In one preferred embodiment, a heater is provide

The invention provides a filtration system suited to be coupled in a water transfer circuit with a tub, pool, spa, or the like, and includes a housing or casing within which is provided a filter element through which the water passes during operation. In one preferred embodiment, a heater is provided within the housing. The heater comprises an electrical heating element positioned within the center opening of an annular filter element. A pump and motor can be connected to the housing in a water transfer circuit. A strainer for removing hair, lint, or the like is preferably provided within the circuit upstream from the pump, that is to say, between the inlet of the pump and the spa or tub. The strainer can be located within the filter housing adjacent to and in fluid communication with the filter and between the filter and a removable cover releasably secured to the housing.

대표청구항 ▼

A water heater and filtering apparatus for a hot tub, spa, pool, or the like comprising (a) a housing having a chamber therein, (b) a filter element removably mounted in the chamber, the filter element having relatively small water flow openings therethrough, (c) means to open said housing to provid

A water heater and filtering apparatus for a hot tub, spa, pool, or the like comprising (a) a housing having a chamber therein, (b) a filter element removably mounted in the chamber, the filter element having relatively small water flow openings therethrough, (c) means to open said housing to provide access to the inside of the chamber for removing the filter, (d) a basket-shaped strainer removably mounted within the housing and having a bottom wall upon which debris collects during operation for later removal and an upwardly extending side wall at the periphery of the bottom wall, the strainer being characterized by having relatively large visible openings therein and being adapted to remove relatively large debris before it can reach the filter element, (e) a water inlet duct in the housing communicating through the housing to the inside thereof and including means for passing the incoming water into the space above the strainer between the strainer and a portion of the housing so that the water entering the housing through the inlet flows first through the basket-shaped strainer and then through the filter, (f) a water outlet duct in the housing communicating with the opposite side of the filter from the side communicating with the strainer to exhaust water from the housing and, (g) a first heating means comprising an electric heating element mounted within the housing and connected in fluid communication with the filter and strainer between the filter and the water outlet duct for heating the water passing therethrough, the filter thereby removing particles from the water before it reaches the heater to thereby prevent damage to the heater from suspended solids, (h) pump means within the housing including an electric pump motor comprising a second heating means and pump impeller connected thereto to force water first through the strainer next through the filter, and then over the heater, waste heat from said second heating means supplementing that from the said first heating means to provide an overall thermal efficiency approximateing 100%, (i) the apparatus is adapted to be connected in a water circuit with the tub, spa, or pool to heat and filter the water therein and (j) temperature sensor means in heat conductive relationship with water in said water circuit and being wired to the heating element to divide heating between the first and second heating means to thereby maintain a selected temperature.