JPH04300551A - Jet bath pump with filter - Google Patents

Abstract

PURPOSE:To offer the jet bath pump with a filter which suppresses generation of a nasty smell caused by bath water even if it is left as it is for many hours after water of a bathtub is drained, and can improve the washing performance of a filter medium, in the bath pump used for the bathtub. CONSTITUTION:The jet bath pump is constituted of a pump 2 for allowing bath water in & bathtub to circulate and draining it, two pieces of three-way valves 3a, 3b for switching the water flow direction, a water level sensor 4 for detecting a water level of bath water, a filter which is subjected to piping connection between the three-way valves 3a, 3b and filters bath water, while allowing it to circulate, and a control means 11 for controlling an operation of the three-way valves 3a, 3b and the pump 2. The control means 11 detects a signal of the water level sensor 4 by feed water, and switches the washing time of a filter medium in accordance with an elapsed time after the drain.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a whirlpool bath pump with a filter that can change the cleaning time of a filter medium depending on the elapsed time after draining water.

0002

BACKGROUND OF THE INVENTION In recent years, bathtubs equipped with bubble jets have appeared to promote health, and jet bath pumps with filters have been used to filter and purify hot water in bathtubs.

Conventionally, this type of jet bath pump with a filter generally had a configuration as shown in FIG. The configuration will be explained below with reference to the drawings. As shown in the figure, a pump 2 circulates and drains hot water in a bathtub 1.
, two three-way valves 3a and 3b that switch the direction of water flow, a water level sensor 4 that detects the water level of hot water, and a filter 5 that is connected via piping between the three-way valves 3a and 3b and that circulates and filters hot water.
a, three-way valves 3a, 3b, and a control means 6 for controlling the operation of the pump 2. Note that the filter 5a has a filter medium 5b such as activated carbon, and 7 is an operation switch provided near the bathtub 1.

The operation of the filter-equipped jet bath pump constructed as described above will be explained based on the flowchart shown in FIG.

When the bathtub 1 is filled with hot water and the water level sensor 4 detects the water level, the control means 6 outputs a three-way valve switching signal and a pump operation signal, the three-way valves 3a and 3b are switched, and the pump 2 is started. As a result, the water in the bathtub 1 is drained through the suction port 8, the filter 5a, the filter medium 5b, and the drain port 9 as shown by arrow A, and the filter medium 5b is automatically washed for one minute. After the automatic backwashing is completed, the control means 6 stops the three-way valve switching signal and the pump operation signal, the three-way valves 3a and 3b return to their original positions, and the pump 2 stops. Next, when the operation switch 7 is turned on, a pump operation signal is output from the control means 6, and the pump 2 is started. When pump 2 starts,
The hot water in the bathtub 1 passes through the suction port 8 as shown by arrow B, and bubbles are injected from the discharge port 10. At the same time, the hot water that has passed through the filter 5a is filtered by the filter medium 5b and discharged from the discharge port 10, and the hot water flows through the bathtub 1. Perform circulating filtration of the hot water in step 1. When the water in the bathtub 1 is drained and the water level sensor 4 is opened, the pump 2 is stopped to prevent dry running.

[0006]

[Problems to be Solved by the Invention] However, in the conventional structure described above, if the water is left for a long time after draining the water in the bathtub 1, a foul odor will be generated due to dirt accumulated on the filter medium 5b, and the three-way valves 3a and 3b may be switched to prevent backflow. Even if the filter medium 5b is washed in this manner, the odor cannot be sufficiently removed.

The present invention solves the above-mentioned conventional problems, and aims to provide a whirlpool bath pump with a filter that can suppress the generation of strange odors even if the water is left for a long time after draining the water from the bathtub. purpose.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a pump for injecting bubbles and circulating filtration of hot water in a bathtub and cleaning a filter medium in a filter, and a pump for controlling the water flow direction in the filter. A switching three-way valve, a water level sensor that detects the water level of the hot water in the bathtub, and a control means that controls the operation of the three-way valve and the pump, and the control means detects a signal from the water level sensor and determines the elapsed time after draining. The cleaning time of the filter medium is changed according to the conditions.

[0009]

[Operation] In the above configuration, when water is supplied into the bathtub, it is detected by the water level sensor, and the control means determines whether a preset certain period of time has elapsed after draining, and controls the three-way valve and pump depending on the elapsed time after draining. Change the amount of time you drive.

0010

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In addition, in this example,
Components that are the same as those shown in the conventional example described above are given the same reference numerals, and detailed explanation thereof will be omitted. The characteristic configuration of this embodiment is that the normal time is switched according to the elapsed time after drainage using the control means described in the conventional example. In the figure, 11 is the operation switch 7 and the water level sensor 4.
This control means includes a microcomputer, etc., which receives the signal and controls the operation of the pump 2 and the three-way valves 3a and 3b. 1
2 is a pump drive circuit that drives the pump 2; 13 is a three-way valve drive circuit that drives the three-way valves 3a and 3b; 14 is an AC power source that also supplies current to the water level sensor 4; 15 is a rectifier; 16 is a resistor; 17 is a It is a capacitor.

In the above configuration, when the operation switch 7 is turned on, a signal is input to the input P1 of the control means 11, a pump drive signal is output to the output P2, and the pump 2 is started. When the operation switch 7 is turned on again, the control means 11
A pump stop signal is output to the output P2 of the pump 2, and the pump 2 is stopped. Usually, the above operation is repeated. The water level sensor 4 has
An alternating current voltage (8 VAC) is constantly applied from an alternating current power supply 14. Now, when there is no water in the bathtub 1, the electrodes of the water level sensor 4 are in an open state, so no current flows, and the voltage applied to the input P0 of the control means 11 is 0V. When the bathtub 1 is filled with hot water and the electrodes of the water level sensor 4 are submerged, an alternating current flows through the water between the electrodes, and the rectifier 1
5 and a capacitor 17, and a DC voltage is applied to the input P0 of the control means 11. The DC voltage is A-D converted inside the control means 11, and the water level sensor 4
Determine whether or not the area is submerged in water.

Here, when the water in the bathtub 1 is drained and the control means 11 determines that the water level has decreased, the control means 11 starts the internal 100-hour timer and at the same time stops the operation. If the pump is in the process of cleaning, it will stop the bubble operation, and if it is cleaning, it will stop the backwash operation to prevent the pump from running dry. Next, when the bathtub 1 is filled with hot water, the water level sensor 4 is submerged, and the control means 11 detects the water level, it is determined whether 100 hours have passed since the water was drained. If it is within 100 hours after draining, the 100 hour timer is reset, a pump start signal and a three-way valve start signal are output from outputs P2 and P3, and the filter 5 is turned off for 1 minute.
Perform automatic backwashing of a. Moreover, if 100 hours or more have passed after draining, automatic backwashing of the filter 5a is performed for 3 minutes. Backwash operation is performed only once when bathtub 1 is filled with hot water.
Thereafter, depending on the operation of the operation switch 7, the bubble/filtration operation is repeatedly stopped.

[0013]

Effects of the Invention As is clear from the above embodiments, the jet bath pump with filter of the present invention includes a pump that performs bubble fountain/circulation filtration of hot water in the bathtub and cleaning of the filter medium in the filter; a three-way valve that switches the water flow direction; a water level sensor that detects the water level of the hot water in the bathtub; and a control means that controls the operation of the three-way valve and the pump, and the control means detects a signal from the water level sensor and controls the drainage. The cleaning time of the filter medium is changed according to the elapsed time, and with this configuration, after draining the water in the bathtub, the cleaning time of the filter medium is changed depending on the time the bathtub is left for a long time. It also suppresses the occurrence of strange odors, allowing you to enjoy a comfortable bubble bath.

[Brief explanation of drawings]

[Fig. 1] Circuit diagram of a jet bath pump with a filter according to an embodiment of the present invention.

[Figure 2] System configuration diagram of the jet bath pump with filter

[Figure 3] Operation flowchart of the jet bath pump with filter

[Figure 4] System configuration diagram of a conventional jet bath pump with filter

[Figure 5] Operation flowchart of the jet bath pump with filter

[Explanation of symbols]

1 Bathtub 2 Pump 3a, 3b three-way valve 4 Water level sensor 5a Filter 5b Filter medium 11 Control means

Claims (1)

[Claims] [Claim 1] A pump for injecting bubbles and circulating filtration of hot water in a bathtub and cleaning a filter medium in a filter, a three-way valve for switching the direction of water flow in the filter, and detecting the water level of hot water in the bathtub. A whirlpool bath pump with a filter, comprising a water level sensor and a control means for controlling the operation of the three-way valve and the pump, the control means detecting a signal from the water level sensor and switching the cleaning time of the filter medium according to the time elapsed after drainage. .