Table type water purifier

Abstract

The utility model discloses a table type water purifier which comprises a raw water tank and a filter element, pure water filtered by the filter element is discharged after passing through a pure water tank, and waste water generated by the filter element flows back to the raw water tank; pure water generated by the filter element passes through the first reversing valve before entering the pure water tank, and the first reversing valve is provided with a bypass leading to the ice making tank; outlet water of the pure water tank passes through the second reversing valve; the second reversing valve is provided with a bypass which flows back to the front of the filter element. Through different operations of the reversing valve, the water quality of discharged water is stable, and the ice making requirement can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of water purification equipment, and specifically relates to a desktop water purifier. Background Art

[0002] The desktop water purifier is placed on the countertop. The biggest difference from other water purifiers is that it does not have pipes, but relies on a raw water tank to provide raw water, and the waste water it produces also returns to the raw water tank. Obviously, this mode makes it easy to arrange, but during use, the water quality in the raw water tank will become worse and worse until the water needs to be changed. One problem caused by this is that the water quality of its output is also unstable. If pure water is made into ice, the problem of unstable water quality will be more obvious. Therefore, the existing desktop water purifiers do not have an ice-making function. Summary of the invention

[0003] The utility model aims to provide a desktop water purifier with stable water quality, and the water quality should be good enough to meet the demand for ice making.

[0004] To this end, the utility model adopts the following technical solution: a desktop water purifier, including a raw water tank and a filter element, wherein the pure water filtered by the filter element is discharged through the pure water tank, and the waste water generated by the filter element is returned to the raw water tank; the utility model is characterized in that the pure water generated by the filter element passes through a first reversing valve before entering the pure water tank, and the first reversing valve has a bypass leading to the ice making tank; the water outlet from the pure water tank passes through a second reversing valve, and the second reversing valve has a bypass that flows back to the filter element.

[0005] Furthermore, a booster pump is provided between the raw water tank and the filter element, and the bypass of the second reversing valve flows back to the front of the booster pump.

[0006] A water quality sensor is provided at the pure water outlet of the filter element. When the water quality is lower than a set value, the first reversing valve closes the bypass leading to the ice making tank, and the second reversing valve opens the bypass returning to the front of the booster pump.

[0007] The water outlet channel of the pure water tank is provided with a heater.

[0008] When the utility model is working, there are several modes: one is that after the filter element makes water, the first reversing valve and the second reversing valve do not use the bypass, then the made pure water enters the pure water tank, and is directly discharged with or without heating; one is that after the filter element makes water, if it is found that the made pure water does not meet the water quality requirements, the bypass of the second reversing valve is used to make the made pure water enter the pure water tank and then flow back to the front of the pump, and then filter and make water again, so as to obtain pure water with better water quality; one is that the user needs ice cubes and the pure water made by the filter element can meet the water quality requirements, the bypass of the first reversing valve is used to make the pure water enter the ice making trough to make ice; one is that the user needs ice cubes and the pure water made by the filter element cannot meet the water quality requirements, the bypass of the second reversing valve is first used to make the made pure water enter the pure water tank and then flow back to the front of the pump, and then filter and make water again, and after the water quality meets the requirements, the bypass of the first reversing valve is used to make the pure water enter the ice making trough to make ice.

[0009] It can be seen that, through different operations of the reversing valve, the utility model can ensure that the water quality of the outlet water is stable and can ensure that the ice making demand is met. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a waterway diagram of the utility model. DETAILED DESCRIPTION

[0011] See the attached drawings. The utility model includes a raw water tank 1, which is connected to an RO filter element 3 after passing through a booster pump 2. The waste water generated by the RO filter element 3 flows back to the raw water tank 1 through a waste water solenoid valve; the pure water produced by the RO filter element 3 flows forward after passing through a probe (not marked in the figure) and enters the first reversing valve V1 from port A. The first reversing valve V1 has three ports, one inlet and two outlets, marked as A\B\C, respectively, wherein the main water path enters the pure water tank 5 through outlet C, and the bypass enters the ice making tank 5 through outlet B; the pure water tank 6 is provided with a float switch 7 for automatically controlling the operation of the booster pump 2, and the water outlet of the pure water tank 5 is provided with a second reversing valve V2, which also has three ports, one inlet and two outlets, marked as A\B\C, respectively, wherein B is the inlet, and the main water path is from outlet C, and then passes through a heating body 8 and a water vapor separation box 9 to be provided to the user; the bypass of the second reversing valve V2 is to flow back to the booster pump 2 through outlet A and enter the filter element 3 again.

[0012] In the normal water production mode, bypass B of the first reversing valve V1 is closed, bypass A of the second reversing valve V2 is closed, and the main water path is raw water tank 1-boosting pump 2-filter element 3-pure water tank 6-heating body 8-water vapor separation box 9, which is provided to the user.

[0013] When the water quality is not good enough, the bypass B of the first reversing valve V1 is closed and the bypass A of the second reversing valve V2 is opened. The water path is raw water tank 1-boosting pump 2-filter element 3-pure water tank 6-boosting pump 2-filter element 3-pure water tank 6. When the water quality meets the requirements, the bypass A of the second reversing valve V2 is closed, and the pure water passes through the heating body 8-water vapor separation box 9 and is provided to the user.

[0014] When ice is being made and the water quality is good enough, the bypass B of the first reversing valve V1 is opened, and the water path is the raw water tank 1 - booster pump 2 - filter element 3 - ice making tank 5.

[0015] When making ice and the water quality is not good enough, the bypass B of the first reversing valve V1 is closed, and the bypass A of the second reversing valve V2 is opened. The water path is raw water tank 1-boosting pump 2-filter element 3-pure water tank 6-boosting pump 2-filter element 3-pure water tank 6. When the water quality meets the requirements, the bypass B of the first reversing valve V1 is opened, and the pure water from the filter element 3 enters the ice making tank 5.

Claims

1. A desktop water purifier, comprising a raw water tank and a filter element, wherein pure water filtered by the filter element is discharged from the pure water tank, and waste water generated by the filter element is returned to the raw water tank; characterized in that: The pure water produced by the filter element passes through the first reversing valve before entering the pure water tank. The first reversing valve has a bypass leading to the ice making tank; the water outlet of the pure water tank passes through the second reversing valve. The second reversing valve has a bypass back to the filter element.

2. A desktop water purifier as claimed in claim 1, characterized in that: A booster pump is provided between the raw water tank and the filter element, and the bypass of the second reversing valve flows back to the front of the booster pump.

3. A desktop water purifier as claimed in claim 2, characterized in that: A water quality sensor is provided at the pure water outlet of the filter element. When the water quality is lower than a set value, the first reversing valve closes the bypass leading to the ice making tank, and the second reversing valve opens the bypass returning to the front of the booster pump.

4. A desktop water purifier according to any one of claims 1 to 3, characterized in that: The water outlet channel of the pure water tank is provided with a heater.

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