Water supply system of motor caravan

Abstract

The invention relates to the field of motor caravans, in particular to a domestic water supply system of a motor caravan. The water supply system of the motor caravan comprises a water tank, a filter, a water pump, a pre-inflation pressure type water storage tank and a control unit, wherein the water tank communicates with the water inlet of a water inlet one-way valve by a water inlet pipe, the water outlet of a water outlet one-way valve communicates with a water outlet pipe, the filter is connected to the water inlet pipe in series, the pre-inflation pressure type water storage tank is connected to the water outlet pipe in parallel, and a pressure sensor is arranged on the water outlet pipe in a position at the upstream of the pre-inflation pressure type water storage tank; and the pressure sensor is electrically connected with a water flow sensor and the control unit, and the control unit is connected with the water pump. The water supply system can meet the requirement of the user on using double water resources, including storing water with the water tank and conveniently using external tap water; and the system also has two specific functions of preventing dry operation of the water pump due to water lack of the system and preventing freezing damage, which are favorable for promoting system reliability, so that a waterway system equipped with the system is convenient in use and reliable in operation.

Description

technical field [0001] The invention relates to the field of caravans, in particular to a domestic water supply system for a caravan. Background technique [0002] In the existing technology, the water supply system is simply constructed from components, and no effective intelligent control strategy is adopted from the perspective of the objective characteristics of the working medium of the water supply system. The domestic water supply system for RVs has the following two major shortcomings: [0003] 1. When the water pump is short of water in the water tank, because the compressed air of the water pump cannot reach the set pressure value, the power supply of the water pump cannot be automatically cut off, and the continuous operation wastes electric energy. At the same time, the water pump cannot withstand continuous dry operation for a long time, and the life of the diaphragm is reduced or even damaged. Loss of water supply function. [0004] 2. The anti-icing ability o...

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Problems solved by technology

[0002] In the existing technology, the water supply system is simply constructed from components, and no effective intelligent control strategy is adopted from the perspective of the objective characteristics of the working medium of the water supply system. The domestic water supply system for RVs has the following two major shortcomings:

[0003] 1. When the water pump is short of water in the water tank, because the compressed air of the water pump cannot reach the set pressure value, the power supply of the water pump cannot be automatically cut off, and the continuous operation wastes electric energy. At the same time, the water pump cannot withstand continuous dry operation for a long time, and the life of the diaphragm is reduced or even damaged. Loss of water supply function

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