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An anti-backflow filter protection device and water heater thereof

A protection device and anti-backflow technology, used in fluid heaters, lighting and heating equipment, etc., can solve problems such as water heater failure, hot water backflow, and impact on the functional life of filter elements, so as to reduce impact, save costs, and extend service life. Effect

Active Publication Date: 2020-04-17
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the processed medium backflows due to system problems and the working conditions change, it will have an impact on the functional life of the filter element
Under normal circumstances, a one-way control valve will be directly set to solve the problem, but some systems cannot handle it this way.
For example, more and more electric water heaters now add water quality treatment filters to make bath water more clean and comfortable. When the water heater system is heated, the expansion of the water in the tank will cause the hot water in the tank to flow back. The return flow cannot be cut off directly with the one-way control valve, otherwise the water heater will fail if the pressure is too high

Method used

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  • An anti-backflow filter protection device and water heater thereof
  • An anti-backflow filter protection device and water heater thereof
  • An anti-backflow filter protection device and water heater thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as Figure 1-Figure 2 As shown, an anti-backflow filter element protection device includes a filter device, the filter device includes a water inlet pipe 3, an outlet pipe 2 and a filter element arranged between the water inlet pipe 3 and the water outlet pipe 2; the filter device also includes a filter bottle 9, the The filter element is placed in the filter bottle 9, and the water inlet pipe 3 and the water outlet pipe 2 protrude from the filter bottle 9 and are used to connect with external equipment.

[0042] The first anti-backflow device 5 is provided on the outlet pipe 2, the first anti-backflow device 5 is turned on to discharge water, and the first anti-backflow device 5 is turned off to prevent water from backflowing into the filter element.

[0043] Further, it may also include a communication pipe 7, the communication pipe 7 communicates with the water inlet pipe 3 and the water outlet pipe 2, the first anti-backflow device 5 is arranged on the water ou...

Embodiment 2

[0049] Such as Figure 3-Figure 4 As shown, a water heater includes a water heater heating device 10, and an anti-backflow filter element protection device is installed. The anti-backflow filter element protection device includes a filter device, and the filter device includes a water inlet pipe 3, an outlet pipe 2, and a water inlet pipe 3. The filter element between 2; the filter device also includes a filter bottle 9, the filter element is placed in the filter bottle 9, and the water inlet pipe 3 and the water outlet pipe 2 protrude from the filter bottle 9 and are used to connect with the water heater.

[0050] Further, when the hot water flowing back from the water heater is less, the outlet pipe 2 is connected to the water heater inlet pipe through a two-way joint, and the water inlet pipe of the filter device is connected to the external main pipeline 8, and the main pipe The road 8 is the second water inlet pipe section of the water heater, and the main pipe 8 supplies...

Embodiment 3

[0054] Such as Figure 5 As shown, a water heater is installed with an anti-backflow filter element protection device, and the anti-backflow filter element protection device includes a filter device, and the filter device includes a water inlet pipe 3, an outlet pipe 2, and a filter element arranged between the water inlet pipe 3 and the water outlet pipe 2 The filter device also includes a communication pipe 7, the communication pipe 7 communicates with the water inlet pipe 3 and the water outlet pipe 2, the first anti-backflow device 5 is set on the water outlet pipe 2, and the first anti-backflow device 5 opens the water outlet, The first anti-backflow device 5 is closed to prevent water from flowing back into the filter element; the second anti-backflow device 6 is arranged in the connecting pipe 7, and the second anti-backflow device 6 is turned on to discharge water, and the second anti-backflow device 6 is closed to prevent the water inlet pipe 3 and the water outlet pip...

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Abstract

The invention discloses an anti-backflow filter element protecting device and a water heater. The anti-backflow filter element protecting device comprises a filtering device which comprises a water inlet pipe, a water outlet pipe and a filter element arranged between the water inlet pipe and the water outlet pipe; the water outlet pipe is provided with a first backflow prevention device, and waterflows out when the first backflow prevention device is started and is prevented from flowing back into the filter element when the first backflow prevention device is shut down; the filtering devicefurther comprises a communicating pipe, and the communicating pipe enables the water inlet pipe and the water outlet pipe to communicate. By the adoption of the technical scheme, the influence of backflow water on the filter element and a filter shell can be reduced under the condition of water backflow, so that the backflow water flows back to a main pipeline directly after bypassing the filter element, and the purpose of protecting the filter element is achieved.

Description

technical field [0001] The invention belongs to the field of water heater filter element protection, and in particular relates to an anti-backflow filter element protection device and a water heater thereof. Background technique [0002] Nowadays, filter elements are used in many fields, such as water treatment and gas treatment. There are filter elements of various materials and forms. Generally, the range of operating conditions of filter elements is certain, such as temperature and pollution degree of the treatment medium. When the processed medium backflows due to system problems and the working conditions change, it will have an impact on the functional life of the filter element. Under normal circumstances, a one-way control valve is directly set to solve the problem, but some systems cannot handle it this way. For example, more and more electric water heaters now add water quality treatment filters to make bath water more clean and comfortable. When the water heater ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/00F24H9/20
CPCF24H9/0042F24H9/2021
Inventor 赵小勇王军边文兵
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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