Dialysis liquid heating tray with high dielectric strength

Abstract

The utility model relates to the technical field of dialysis liquid heating, and discloses a dialysis liquid heating tray with high dielectric strength, which comprises an aluminum alloy plate, a silica gel insulating layer, a silica gel electric heating sheet and a temperature probe, the silica gel insulating layer is fixedly connected to the bottom surface of the aluminum alloy plate, and the silica gel electric heating sheet is fixedly connected to the bottom surface of the silica gel insulating layer. A silica gel electric heating piece is arranged on the aluminum alloy plate, one side of the silica gel electric heating piece is electrically connected with a first wire, a dialysate bag is placed on the surface of the top of the aluminum alloy plate, dialysate is contained in the dialysate bag, and a temperature probe is arranged on the aluminum alloy plate and used for detecting the heating temperature value of the dialysate contained in the dialysate bag. The heating tray of the automatic peritoneal dialysis machine has the following advantages and effects that the withstand voltage of the heating tray of the automatic peritoneal dialysis machine expected to be used in the home nursing environment can reach the standard requirement of 4000 V, the safety of a user can be effectively guaranteed, and the dielectric strength of solid state electrical of the heating tray can bear the test voltage of 4000 V.

Description

Technical Field

[0001] The present application relates to the field of dialysis fluid heating, and in particular to a dialysis fluid heating tray with high dielectric strength. Background Art

[0002] When a patient undergoes peritoneal dialysis treatment, the dialysis fluid bag needs to be placed on the heating tray of the automatic peritoneal dialysis machine for heating. The dialysis fluid in the dialysis fluid bag needs to be heated to the set temperature before it can be injected for treatment. As the applied part of the automatic peritoneal dialysis machine of Class II equipment, the dialysis fluid heating tray should be able to withstand a 4000V test voltage in order to ensure the safety of the user.

[0003] In the related art, the conventional heating tray is a silicone heating sheet attached to an aluminum alloy plate, and the temperature probe is installed on the heating tray through an insulating gasket. The dielectric strength of its solid-state electrical equipment can only withstand a test voltage of 2000V, and cannot meet the high dielectric strength test voltage requirement of 4000V for Class II medical equipment.

[0004] Therefore, we propose a dialysis fluid heating tray with high dielectric strength to solve the above problems. Utility Model Content

[0005] The purpose of the present application is to provide a dialysis liquid heating tray with high dielectric strength, which can enable the heating tray of an automatic peritoneal dialysis machine intended for use in a home care environment to have a withstand voltage of 4000V, which can effectively ensure the safety of the user and enable the dielectric strength of the solid-state electrical device to withstand a test voltage of 4000V.

[0006] The above technical objectives of the present application are achieved through the following technical solutions: a high dielectric strength dialysis liquid heating tray, comprising an aluminum alloy plate, a silicone insulating layer, a silicone heating sheet and a temperature probe, wherein the silicone insulating layer is fixedly connected to the bottom surface of the aluminum alloy plate, the silicone heating sheet is fixedly connected to the bottom surface of the silicone insulating layer, one side of the silicone heating sheet is electrically connected to a first wire, a dialysis liquid bag is placed on the top surface of the aluminum alloy plate, the dialysis liquid bag contains dialysis liquid, and the temperature probe is arranged on the aluminum alloy plate, and the temperature probe is used to detect the heating temperature value of the dialysis liquid contained in the dialysis liquid bag.

[0007] The present application is further configured as follows: the thickness of the silicone insulation layer is 0.5 mm.

[0008] The present application is further configured as follows: the thickness of the aluminum alloy plate is greater than the thickness of the silicone insulation layer.

[0009] The present application is further configured as follows: the temperature probe includes a copper cylindrical shell, a high thermal conductivity silicone insulating sheet and a digital temperature sensor; the copper cylindrical shell is fixedly mounted on an aluminum alloy plate; the bottom end of the copper cylindrical shell passes through the silicone insulating layer; the bottom end of the copper cylindrical shell is an open structure; the high thermal conductivity silicone insulating sheet is fixedly connected to the top inner wall of the copper cylindrical shell; the digital temperature sensor is fixedly connected to the bottom surface of the high thermal conductivity silicone insulating sheet; a second wire is electrically connected to the digital temperature sensor; one end of the second wire extends outside the copper cylindrical shell.

[0010] The present application is further configured as follows: the high thermal conductivity silicone insulating sheet is fixed to the top inner wall of the copper cylindrical shell by adhesive.

[0011] The present application is further configured as follows: the thickness of the high thermal conductivity silicone insulation sheet is 0.5 mm.

[0012] The present application is further configured as follows: the copper cylindrical shell is filled with sealant.

[0013] The present application includes at least one of the following beneficial technical effects:

[0014] The present application, by attaching a 0.5 mm thick silicone insulating layer between the aluminum alloy plate of the heating tray and the silicone electric heating sheet, can make the withstand voltage between the aluminum alloy plate of the heating tray and the silicone electric heating sheet reach more than 4000V, and by adding a 0.5 mm high thermal conductivity silicone insulating sheet between the copper cylindrical shell of the temperature probe and the digital temperature sensor, the withstand voltage between the copper cylindrical shell of the temperature probe and the digital temperature sensor can reach more than 4000V, thereby making the withstand voltage of the heating tray of the automatic peritoneal dialysis machine intended for home care environment reach the standard requirement of 4000V, which can effectively ensure the safety of users and enable the dielectric strength of the solid-state electrical device to withstand the 4000V test voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0016] Figure 2 It is a schematic diagram of the main cross-sectional structure of this embodiment.

[0017] Figure 3 2 is a schematic diagram of the structure when viewed from above of the present embodiment.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the temperature probe.

[0019] In the figure, 1. aluminum alloy plate; 2. silicone insulation layer; 3. silicone heating plate; 4. first wire; 5. dialysate bag; 6. copper cylindrical shell; 7. high thermal conductivity silicone insulation sheet; 8. digital temperature sensor; 9. second wire; 10. sealant. DETAILED DESCRIPTION

[0020] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0021] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The present application provides a high dielectric strength dialysis liquid heating tray, comprising an aluminum alloy plate 1, a silicone insulating layer 2, a silicone heating sheet 3 and a temperature probe, wherein:

[0022] The silicone insulation layer 2 is fixedly connected to the bottom surface of the aluminum alloy plate 1, and the thickness of the silicone insulation layer 2 is 0.5 mm. The thickness of the aluminum alloy plate 1 is greater than the thickness of the silicone insulation layer 2. It should be supplemented that the silicone insulation layer 2 is made of silicone material with good high temperature resistance. The silicone heating plate 3 is fixedly connected to the bottom surface of the silicone insulation layer 2. One side of the silicone heating plate 3 is electrically connected to a first wire 4, and the first wire 4 is electrically connected to an external power supply, which can be used to provide electrical energy to the silicone heating plate 3. A dialysate bag 5 is placed on the top surface of the aluminum alloy plate 1, and the dialysate bag 5 contains dialysate. A temperature probe is arranged on the aluminum alloy plate 1, and the temperature probe is used to detect the heating temperature value of the dialysate contained in the dialysate bag 5.

[0023] In this embodiment, the working voltage of the silicone heater 3 is AC220V, the rated heating power is 400W, the rated resistance of the silicone heater 3 at room temperature (25°C) is 122Ω, the long-term temperature resistance range of its surface is -50°C to 200°C, the maximum temperature resistance is 250°C, and the insulation resistance is ≥150MΩ.

[0024] In this embodiment, by gluing and fixing a silicone insulation layer 2 with a withstand voltage of 4000V and a thickness of 0.5mm on the aluminum alloy plate 1, and then gluing and fixing the silicone heating plate, the withstand voltage between the aluminum alloy plate 1 and the silicone heating plate 3 can reach more than 4000V, thereby meeting the requirement of the high dielectric strength 4000V test voltage of Class II medical equipment.

[0025] In this embodiment, the temperature probe includes a copper cylindrical shell 6, a high thermal conductivity silicone insulating sheet 7 and a digital temperature sensor 8. The copper cylindrical shell 6 is fixedly mounted on the aluminum alloy plate 1. The bottom end of the copper cylindrical shell 6 penetrates the silicone insulating layer 2. The bottom end of the copper cylindrical shell 6 is an open structure. The high thermal conductivity silicone insulating sheet 7 is fixedly connected to the top inner wall of the copper cylindrical shell 6. The thickness of the high thermal conductivity silicone insulating sheet 7 is 0.5 mm. The digital temperature sensor 8 is fixedly connected to the bottom surface of the high thermal conductivity silicone insulating sheet 7. The digital temperature sensor 8 is electrically connected to a second wire 9, and one end of the second wire 9 extends to the outside of the copper cylindrical shell 6. By using the high thermal conductivity silicone insulating sheet 7, the withstand voltage between the copper cylindrical shell 6 and the digital temperature sensor 8 can reach more than 4000V, thereby meeting the high dielectric strength 4000V test voltage requirement of Class II medical equipment.

[0026] In this embodiment, in order to facilitate the installation and fixation of the high thermal conductivity silicone insulating sheet 7, the high thermal conductivity silicone insulating sheet 7 is adhered and fixed to the top inner wall of the copper cylindrical shell 6 by glue.

[0027] In this embodiment, the copper cylindrical shell 6 is filled with sealant 10. The sealant 10 is filled in the copper cylindrical shell 6 to fix the second wire 9. The sealant 10 is preferably 704 sealant.

[0028] In this embodiment, the model of the digital temperature sensor 8 is DS18B20, the operating voltage of DS18B20 is 3V-5.5V, the static power consumption is <3uA, and DS18B20 has a unique single-line interface mode. When DS18B20 is connected to a microprocessor, only one line is needed to realize two-way communication between the microprocessor and DS18B20.

[0029] Through the above structure, when the dialysis liquid heating tray with high dielectric strength provided by the present application is used, a silicone insulation layer 2 with a withstand voltage of 4000V and a thickness of 0.5mm is pasted and fixed on the aluminum alloy plate 1, and then a silicone electric heating plate 3 is pasted and fixed, so that the withstand voltage between the aluminum alloy plate 1 and the silicone electric heating plate 3 can reach more than 4000V. By pasting and fixing the high thermal conductivity silicone insulation sheet 7 in the copper cylindrical shell 6, and then gluing and fixing the digital temperature sensor 8 on the high thermal conductivity silicone insulation sheet 7 with glue, leading out the second wire 9, and then filling the copper cylindrical shell 6 with sealant 10, under the action of the high thermal conductivity silicone insulation sheet 7, the withstand voltage between the copper cylindrical shell 6 and the digital temperature sensor 8 can reach more than 4000V, thereby meeting the requirement of the high dielectric strength 4000V test voltage of Class II medical equipment.

Claims

1. A high dielectric strength dialysis fluid heating tray, characterized in that: The invention comprises an aluminum alloy plate (1), a silicone insulating layer (2), a silicone electric heating plate (3) and a temperature probe, wherein the silicone insulating layer (2) is fixedly connected to the bottom surface of the aluminum alloy plate (1), the silicone electric heating plate (3) is fixedly connected to the bottom surface of the silicone insulating layer (2), one side of the silicone electric heating plate (3) is electrically connected to a first wire (4), a dialysate bag (5) is placed on the top surface of the aluminum alloy plate (1), the dialysate bag (5) contains dialysate, and the temperature probe is arranged on the aluminum alloy plate (1), and is used to detect the heating temperature value of the dialysate contained in the dialysate bag (5).

2. A high dielectric strength dialysis liquid heating tray according to claim 1, characterized in that: The thickness of the silicone insulation layer (2) is 0.5 mm.

3. A high dielectric strength dialysis liquid heating tray according to claim 2, characterized in that: The thickness of the aluminum alloy plate (1) is greater than the thickness of the silicone insulation layer (2).

4. A high dielectric strength dialysis liquid heating tray according to claim 1, characterized in that: The temperature probe comprises a copper cylindrical shell (6), a high thermal conductivity silicone insulating sheet (7) and a digital temperature sensor (8); the copper cylindrical shell (6) is fixedly mounted on the aluminum alloy plate (1); the bottom end of the copper cylindrical shell (6) penetrates the silicone insulating layer (2); the bottom end of the copper cylindrical shell (6) is an open structure; the high thermal conductivity silicone insulating sheet (7) is fixedly connected to the top inner wall of the copper cylindrical shell (6); the digital temperature sensor (8) is fixedly connected to the bottom surface of the high thermal conductivity silicone insulating sheet (7); the digital temperature sensor (8) is electrically connected to a second wire (9); one end of the second wire (9) extends outside the copper cylindrical shell (6).

5. A high dielectric strength dialysis liquid heating tray according to claim 4, characterized in that: The high thermal conductivity silicone insulating sheet (7) is fixed to the top inner wall of the copper cylindrical shell (6) by adhesive.

6. A high dielectric strength dialysis fluid heating tray according to claim 4, characterized in that: The thickness of the high thermal conductivity silicone insulating sheet (7) is 0.5 mm.

7. A high dielectric strength dialysis fluid heating tray according to claim 4, characterized in that: The copper columnar housing (6) is filled with sealant (10).

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