JP5838620B2 - Discharge method of used dialysate in dialysis machine for multi-person - Google Patents

Description

The present invention relates to a method for discharging used dialysate in a multi-person dialysis machine, and more specifically, heat exchange using a temperature difference between used dialysate and tap water before water treatment (hereinafter referred to as raw water). It is related with the method of discharging | emitting used dialysate after performing.

Conventionally, hemodialysis and blood filtration using a hemodialysis apparatus have been performed in order to improve a serious condition such as a patient with renal failure or a patient with hyperhydration due to postoperative drug injection.
For example, a multi-person dialysis apparatus as described in Patent Document 1 is applied to a dialysate prepared using tap water (RO water) treated with an RO membrane at about 30 ° C. with a heater or the like. This is a device that heats and sends it to the console to perform hemodialysis treatment. However, in a multi-person dialysis device, a heat exchanger (small) is conventionally provided for each console, and tap water is used with the used dialysate The warming operation was performed with a small heat exchanger provided in each console.

Japanese Patent Laid-Open No. 2003-310749

Therefore, the heat efficiency is poor, and the heat exchanger is provided in each console although it is small in size, which is disadvantageous in terms of cost.

  An object of the present invention is to provide a method for efficiently warming raw water by heat exchange using a temperature difference between the raw water and the used dialysate when discharging the used dialysate in a multi-person dialysis machine. To do. Another object of the present invention is to provide a method for efficiently warming raw water by heat exchange by utilizing the temperature difference between RO water and raw water in winter when the raw water is cold.

  The method of discharging the used dialysate in the multi-person dialysis apparatus of the present invention collects the used dialysate discharged from each console into one pipe equipped with a heat exchanger, and combines the used dialysate with the raw water. After warming the raw water by heat exchange using the temperature difference, the used dialysate used for this heat exchange is discharged. In this case, the RO wastewater is further supplied to the heat exchanger, the temperature difference between the RO wastewater and the raw water is used to warm the raw water by heat exchange, and then the RO wastewater used for the heat exchange is discharged. You may do it. Further, when discharging the used dialysate in the multi-person dialysis machine, the used dialysate discharged from each console is collected in one pipe provided with a first heat exchanger, and the used dialysate and After heating the RO water by heat exchange using the temperature difference with the RO water, the used dialysate used for this heat exchange is discharged and the RO waste water is further supplied to the second heat exchanger. Then, using the temperature difference with the raw water, the raw water may be warmed by heat exchange, and then the RO wastewater used for the heat exchange may be discharged.

Although the present invention has been generally described above, a better understanding can be obtained by reference to certain specific embodiments. These examples are provided herein for illustrative purposes only and are not limiting unless otherwise specified.

According to the present invention, the following effects can be expected. That is, spent dialysate discharged from each console is collected in one pipe equipped with a heat exchanger, and after using the temperature difference between the used dialysate and raw water to heat the raw water by heat exchange, Since the used dialysate used for this heat exchange is discharged, the dialysate prepared using RO water obtained by treating the raw water with water can be heated less, enabling highly efficient dialysis treatment. become. When the temperature of raw water is low, such as in winter, RO wastewater is supplied to a heat exchanger, and the raw water is heated by heat exchange using the temperature difference between the RO wastewater and raw water, and then used for the heat exchange. If the RO wastewater is discharged, the thermal efficiency is further improved.

1 is a schematic view showing a multi-person dialysis apparatus that employs the drainage method of Example 1. FIG. It is the schematic which shows the dialysis apparatus for many people which employ | adopted the drainage method of Example 2. It is the schematic which shows the dialysis apparatus for many people which employ | adopted the drainage method of Example 3.

1 Water treatment equipment (RO tank)
2 Multi-person dialysate supply device 31, 32, 33, 34 Console 4 Heat exchanger 5 Piping 6 Piping

  The used dialysate discharged from each console is collected in a single pipe equipped with a heat exchanger, and the raw water is heated by heat exchange using the temperature difference between the used dialysate and the raw water. In addition to discharging the used dialysate, the RO drainage is supplied to a heat exchanger, and the raw water is heated by heat exchange using the temperature difference between the RO drainage and the raw water, and then used for the heat exchange. Drain RO wastewater.

(Example 1)
Next, Example 1 of the present invention will be described.
FIG. 1 is a schematic view showing a multi-person dialysis apparatus adopting the drainage method of Example 1. FIG.
The raw water before being treated with water usually has a water temperature of 5 to 25 ° C., although it varies depending on the season. On the other hand, the temperature of the dialysate supplied to the multi-person dialysis machine is heated to about 30 ° C. by a heater, and becomes 33 to 35 ° C. by dialysis treatment. The RO water produced in the RO tank is about 56% of RO raw water heated to around 25 ° C., and about 44% of RO wastewater has been wasted in the past.
The raw water (heated to about 25%) supplied to the water treatment device (RO tank) 1 is treated here with, for example, RO water, and then supplied to the multi-person dialysate supply device 2, where Used to prepare dialysate. The prepared dialysate is heated to around 30 ° C. and supplied to a multi-person dialyzer (console) 31, 32, 33, 34 for use in dialysis treatment. The used dialysate is collected in one pipe 5 provided with the heat exchanger 4 and supplied to the heat exchanger 4, and the temperature difference between the used dialysate and the raw water supplied to the heat exchanger 4. The water is drained after warming the raw water. On the other hand, the raw water heated by the heat exchanger 4 is supplied to the RO tank 1. Thereby, thermal efficiency can be improved by 20 to 30%.

(Example 2)
FIG. 2 is a schematic diagram showing a multi-person dialysis apparatus that employs the drainage method of the first embodiment.
In Example 1, the raw water is heated by the used dialysate, but in this apparatus, the raw water is further heated by the RO drainage. Therefore, description of heating of the raw water with the used dialysate is omitted.
The raw water (heated to about 25 ° C.) supplied to the RO tank 1 is processed here, and about 56% is supplied as RO water to a multi-person dialysate supply device. On the other hand, the remaining 44% is supplied to the heat exchanger 4 through the pipe 6 as RO wastewater, and the raw water is warmed using the temperature difference between the RO wastewater and the raw water supplied to the heat exchanger 4. After that, it is drained. On the other hand, the raw water heated by the heat exchanger 4 is supplied to the RO tank 1. Thereby, thermal efficiency can further be improved.

(Example 3)
FIG. 3 is a schematic view showing a multi-person dialysis apparatus adopting the drainage method of Example 3.
In Example 1, the raw water is heated by the used dialysate, and in Example 2, the raw water is further heated by the RO drainage. The used dialysate discharged from each console is collected in one pipe provided with a first heat exchanger, and the RO is exchanged by heat exchange using the temperature difference between the used dialysate and RO water. After warming the water, the used dialysate used for this heat exchange is discharged, and further, RO wastewater is supplied to the second heat exchanger, and the temperature difference with the raw water is utilized to exchange the heat by the heat exchange. After warming the raw water, the RO wastewater used for this heat exchange is discharged.
The raw water supplied to the RO tank 1 (heated to about 25 ° C.) is processed here, and about 56% is supplied to the first heat exchanger 41 as RO water and supplied to the heat exchanger 41. It is warmed using the temperature difference from the used dialysate and supplied to a multi-person dialysate supply device. On the other hand, the remaining 44% is supplied as RO drainage to the second heat exchanger 42 through the pipe 6, warmed using the temperature difference from the raw water and drained. On the other hand, the raw water heated by the heat exchanger 4 is supplied to a heating chamber (not shown), where it is heated to about 25 ° C. and supplied to the RO tank 1.

Claims (2)

When the used dialysate is discharged from a multi-person dialysis machine, the used dialysate discharged from each console is collected in one pipe provided with a heat exchanger, and the temperature difference between the used dialysate and the raw water is collected. After heating the raw water by heat exchange, the used dialysate used for the heat exchange is discharged , and further, RO wastewater is supplied to the heat exchanger, and the temperature difference between the RO wastewater and raw water A method of discharging spent dialysate, wherein the raw water is heated by heat exchange and then the RO wastewater used for the heat exchange is discharged. When the used dialysate is discharged in a multi-person dialysis machine, the used dialysate discharged from each console is collected in one pipe having a first heat exchanger, and the used dialysate and RO water are collected. After heating the RO water by heat exchange using the temperature difference between and the used dialysate used for the heat exchange, the RO water is further supplied to the second heat exchanger, A method for discharging spent dialysate, wherein the raw water is heated by heat exchange using a temperature difference from the raw water, and then the R 2 O 3 wastewater used for the heat exchange is discharged.

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