Instant hot water system and water purification equipment

Abstract

This invention relates to an instant hot water system and a water purification device, applicable to the field of water purification equipment. It includes a filter assembly, a booster pump, and a heating element. The filter assembly is connected to the water inlet. The instant hot water system also includes a flow control branch and a return branch. The flow control branch is connected between the pure water outlet of the filter assembly and the water inlet of the heating element, and includes a flow control device for regulating and providing a target flow rate of pure water to the heating element. The return branch is connected between the pure water outlet of the filter assembly and the water inlet of the booster pump, used to return excess pure water exceeding the target flow rate output by the filter assembly to the water inlet of the booster pump, thereby flushing the filter assembly with the returned pure water. This invention achieves instant hot water preparation and output without a storage tank by diverting excess pure water through the return branch. The return branch and the flow control branch can work simultaneously, and the return branch can still work independently when the flow control branch is not working, thereby reducing the total dissolved solids (TDS) of the first cup of water.

Claims

1. An instant hot water circuit system, comprising a filter assembly (2), a booster pump (3), and a heating element (4), wherein the filter assembly (2) is connected to a water inlet (1), and the instant hot water circuit system further comprises: A flow control branch (5) is connected between the pure water outlet (22a) of the filter assembly (2) and the water inlet of the heating element (4). The flow control branch (5) is equipped with a flow control device (51), which is used to regulate and provide a target flow rate of pure water to the heating element (4). A return branch (6) is connected between the pure water outlet of the filter assembly (2) and the water inlet of the booster pump (3), which is used to flush the filter assembly (2) with the return pure water. When the flow control device (51) is working, the return branch (6) works synchronously and is used to return the excess pure water output by the filter assembly (2) that exceeds the target flow rate to the water inlet of the booster pump (3). When the flow control device (51) is closed, the return branch (6) operates intermittently to return the pure water between the filter assembly (2) and the flow control branch (5) to the inlet of the booster pump (3).

2. The instant hot water circuit system as claimed in claim 1, wherein the flow control device (51) comprises a negative pressure switch and a water pump connected in series, the negative pressure switch being located upstream of the water pump.

3. The instant hot water circuit system as claimed in claim 1, wherein the flow control device (51) includes a flow control pump assembly, the flow control pump assembly including an integrated negative pressure switch and a water pump.

4. The instant hot water circuit system as claimed in claim 1, wherein the flow control device (51) is a flow regulating valve, wherein the flow regulating valve controls the opening size of the internal components of the flow regulating valve by a stepper motor, thereby controlling the water volume of the flow control branch (5).

5. The instant hot water circuit system as claimed in claim 1, wherein the return branch (6) includes a return valve (61) and a check valve (62) connected in series, the inlet end of the return valve (61) is connected to the inlet end of the flow control branch (5), and the outlet end of the return valve (61) is connected to the inlet end of the booster pump (3) through the check valve (62).

6. The instant hot water circuit system as claimed in claim 1, wherein the instant hot water circuit system further includes a normal temperature water branch (9), the inlet end of the normal temperature water branch (9) is connected to the pure water outlet end (22a) of the filter assembly (2), and a normal temperature water valve (91) is provided on the normal temperature water branch (9).

7. The instant hot water system as claimed in claim 1, wherein the filtration assembly (2) includes a fine filter element (21), the fine filter element (21) including a reverse osmosis membrane or a nanofiltration membrane; wherein, The booster pump (3) is located upstream of the fine filter element (21), and the return branch (6) is connected between the outlet end of the fine filter element (21) and the inlet end of the booster pump (3).

8. The instant hot water circuit system as claimed in claim 7, wherein the filter assembly (2) further includes a pre-filter and / or a post-filter connected in series with the fine filter (21); the outlet end of the pre-filter is connected in series with the inlet end of the fine filter (21), and the inlet end of the post-filter is connected in series with the outlet end of the fine filter (21).

9. The instant hot water circuit system as described in claim 8, wherein the pre-filter, fine filter (21) and post-filter are individually configured, partially configured, or fully configured.

10. A water purification device, comprising: The housing (A) has an internal mounting cavity (B); And the instant hot water circuit system as described in any one of claims 1 to 9, at least partially housed in the mounting cavity (B).

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