JP3131349U - First stop heat sterilizer - Google Patents

Abstract

The present invention provides a simple heat sterilization type adsorption water purifier that can be safely used in a first-stop type application.
SOLUTION: A container 1, an adsorbent 2 held in the container, a heating layer 3, an electric heater 4, a raw water inlet 5, a purified water outlet 6, a raw water supply pipe 7, a purified water supply pipe 8, A hot water discharge pipe 9, an on-off valve 10 connected between the raw water intake 5 and the raw water supply pipe 7, an on-off valve 11 connected between the purified water discharge port 6 and the purified water supply pipe 7, and a purified water discharge port 6 And an open / close valve 12 connected between the hot water discharge pipe 9, an open / close valve 10-12, and a timer built-in control circuit 13 electrically connected to an electric heater. In the clean water mode, the valve 10 and the valve 11 are opened. In the heat sterilization mode, the electric heater is energized and the valves 10 and 11 are opened. In the cooling mode immediately after the heat sterilization mode, the sequence control is performed by the control circuit 13 with a built-in timer so that the valves 10 and 12 are opened and the valve 11 is closed. The
[Selection] Figure 1

Description

  The present invention relates to a heat sterilizing water purifier.

  Water purifiers of a type that adsorb chemical substances in tap water with an adsorbent such as activated carbon, so-called adsorption water purifiers, are widely used. It is well known that the adsorption type water purifier has a sanitary problem that bacteria such as bacteria and fungi grow inside the water purifier including the adsorbent.

  As a means for solving this problem, a method of heating the inside of a water purifier containing an adsorbent, a so-called heat sterilization type, has been proposed and partially put into practical use. For example, Patent Documents 1, 2, and 3 propose a method of heating the water in the container by installing an electric heater outside the bottom surface of the water purifier container. Cited Document 4 proposes a method of heating the water in the container by installing an electric heater inside the bottom surface of the water purifier container. In this way, the hygiene problem of the propagation of bacteria inside the water purifier was solved.

  However, the application of the heat sterilization type adsorption water purifier is limited to a so-called former stop type, and there is no one that meets the so-called first stop type request. As shown in FIG. 2, in the main stop type, the supply of purified water is performed by opening and closing a main plug on the upstream side of the water purifier. Heat sterilization is generally set at midnight, but since the main plug is closed, heat sterilization is performed on the water and the adsorbent stored in the water purifier. It becomes possible to warm.

  On the other hand, in the first stop type, as shown in FIG. 3, the supply of purified water is performed by opening and closing a faucet or the like on the downstream side of the water purifier. In general, there are a plurality of faucets or the like, and the opening and closing thereof is arbitrary and irregular. Therefore, when a heat sterilization type adsorption water purifier is used in the first stop type, if the faucet is opened during the heat sterilization, water pressure is applied to the raw water, and hot water is supplied from the faucet, resulting in a risk of burns. Alternatively, a situation occurs in which the temperature cannot be raised to a predetermined temperature because water flows through the heating layer. These disadvantages are the reason why the heat sterilization type adsorption water purifier is limited to the original stop type.

As described above, there is no heat sterilization type adsorption water purifier that can be used for a first-stop type application. If a heat sterilization-type adsorption water purifier that can be used for the first stop type is realized, a single water purifier will be installed in a place with multiple faucets, such as a restaurant kitchen or a food factory. It is only necessary to do so, and the economic efficiency is expected to increase dramatically.
Japanese Utility Model Sho 61-187292 JP-A-9-248563 JP-A-11-342387 JP H18-314963

  The present invention has been made in view of the above circumstances, and a problem to be solved is to realize a heat sterilization type adsorption water purifier that can be safely used for a first-stop type application.

  In the purified water mode, the upstream valve and the purified water supply valve are opened. In the heat sterilization mode, the electric heater is energized and the upstream valve and the purified water supply side valve are closed and the hot water discharge side valve is opened. Therefore, since raw water does not flow into the heating layer, the temperature can be raised to a predetermined temperature in a short time. There is no danger of hot water coming out of the faucet even if the faucet is opened during heat sterilization. In the cooling mode immediately after the heat sterilization mode, the upstream valve and the hot water discharge side valve are opened, and the purified water supply side valve is closed. As described above, the problem is solved by performing the sequence control of the three modes by the timer built-in control circuit. FIG. 4 is a chart of sequence control.

  The present invention makes it possible for the first time to use a heat sterilization type adsorption water purifier for a first-stop type application with a simple structure in which three on-off valves are added to perform sequence control.

  The water purifier container may be a system in which the adsorption layer and the heating layer are separated into two bodies and connected by a pipe or the like, but it is preferable that the water purifier container is integrated as shown in FIG. The container shape may be a rectangular tube shape, but a cylindrical shape is preferable in terms of pressure resistance, sealing properties, and manufacturing costs. The container material may be metallic, glass or plastic, but stainless steel is best in terms of heat resistance, corrosion resistance and safety.

  The adsorbent may be either an organic adsorbent or an inorganic adsorbent, but an inorganic adsorbent, particularly particulate activated carbon is most preferred from the viewpoints of adsorption performance, safety, durability and economy. The larger the amount of the adsorbent, the longer the life and the smaller the water flow resistance, which is desirable.

  The electric heater may be installed inside or outside the container bottom. External installation has the advantage of not causing the problem of scale deposition on the heater surface, but has the disadvantage of poor heat transfer efficiency. On the contrary, the heater built-in type has excellent heat transfer efficiency, but has a problem that durability is reduced due to scale deposition on the heater surface. In the water purifier of the present invention, since the problem of scale accumulation has been solved, the heater built-in type is preferable. The built-in heater is required to have excellent water resistance in order to be immersed in water. Of the heaters in practical use, the stainless steel heater is the best.

  As the raw water supply means, a method of guiding water from the water supply directly to the bottom of the water purifier container directly or through a water receiving tank is generally used, and it is best, but it may be guided from the water tank by a water level difference or a pump. .

  The three valves may be solenoid valves or motor-operated valves, but motor-driven valves are preferable from the viewpoint of economy. Since the water pressure of water supply generally fluctuates, a pressure reducing valve is installed on the upstream side of the water purifier, although it is not shown, in order to avoid excessive water pressure on the water purifier and unstable operation. It is preferable. Moreover, in order to remove impurities, such as red rust, in the upstream of a water purifier, although not shown in figure, it is desirable to install a strainer.

  Next, a control method will be described with reference to the control chart of FIG. The heat sterilization mode is started by operating a timer at a time set by the user and sending a signal from the timer to the control circuit. When the heat sterilization mode is started, the electric heater is energized and heated. At the same time, the upstream valve and the purified water supply side valve are closed, and the warm water discharge side valve is opened. The required time TH in the heating mode is preset and incorporated in the control circuit as a timer. TH varies depending on the capacity of the water purifier, and the minimum time required for sufficient heating to the upper end of the adsorbent is selected.

  When the required time TH elapses, the timer is activated, a signal from the timer is sent to the control circuit, and the cooling mode starts at the same time as the heat sterilization mode ends. In the cooling mode, the electric heater is de-energized, the upstream valve and the warm water discharge valve are opened, and the purified water supply valve is closed. The required time TS for the cooling mode is set in advance and incorporated in the control circuit as a timer. TS depends on the capacity of the water purifier, and the minimum time required for sufficient cooling to the upper end of the adsorbent is selected.

When the required time TS elapses, the timer is activated, a signal from the timer is sent to the control circuit, and the water purification mode starts simultaneously with the end of the cooling mode. Simultaneously with the start of the water purification mode TC, the upstream valve and the purified water supply side valve are opened, and the warm water discharge side valve is closed. When one of the plurality of faucets is opened while in this mode, water purified by the water purifier is supplied from the faucet. Since it has gone through the cooling mode, there is no danger of hot water coming out of the faucet.

  The heat sterilization type adsorption water purifier according to the present invention does not require replacement of the cartridge, so that the economical efficiency is increased when the amount of water used is large. In addition, since the flow resistance is small due to the structure, a large flow rate can be ensured, so that a place requiring a large flow rate is also appreciated. Since the use of the first stop type is made possible, there is a high possibility of use for business purposes having a plurality of faucets, such as kitchens for hotels, restaurants, and food facilities, and food factories.

It is the figure which showed the whole water purifier structure of this invention. It is the figure which showed the structure of the former stop type water purifier. It is the figure which showed the structure of the front stop type water purifier. It is the figure which showed the control chart of the water purifier of this invention.

Explanation of symbols

1. Container 2. 2. Adsorbent 3. Heating layer Electric heater 5. Raw water intake 6. 6. Clean water discharge port Raw water supply pipe8. 8. Clean water supply pipe 9. Hot water discharge pipe On-off valve 11. On-off valve 12. On-off valve 13. Timer built-in control circuit

Claims (1)

A container 1, an adsorbent 2 held in the container, a heating layer 3 provided at the bottom of the container, an electric heater 4 attached to the bottom of the container, a raw water intake 5 provided at the bottom of the container, Purified water discharge port 6, raw water supply pipe 7, purified water supply pipe 8, hot water discharge pipe 9, open / close valve 10 connected between the raw water intake port and the raw water supply pipe, and the purified water discharge port And an on-off valve 11 connected between the purified water supply pipe, an on-off valve 12 connected between the purified water discharge port and the hot water discharge pipe, the on-off valve 10, the on-off valve 11, the on-off valve 12 and the It consists of a timer built-in control circuit 13 electrically connected to the electric heater. In the water purification mode, the valves 10 and 11 are opened. In the heat sterilization mode, the electric heater is energized, and the valves 10 and 11 are closed and the valve 12 is opened. , Heat sterilization type water purifier, characterized in that the sequence control by the timer built control circuit to close open valve 11 the valve 10 and the valve 12 is in the cooling mode of the heat sterilization mode immediately.

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