CN205299901U - Water and electricity disconnect -type PTC liquid heater - Google Patents

Abstract

The utility model discloses a water and electricity separation type PTC liquid heater, which comprises a PTC heating strip, an inner circulation sleeve, an outer circulation sleeve, a heat-conducting and flow-conducting spring, and a liquid inlet and outlet. The inner circulation sleeve includes an outer wall of the inner circulation sleeve, an inner circulation sleeve The middle part of the sleeve and the inner wall of the inner circulation sleeve, and the outer circulation sleeve includes the outer wall of the outer circulation sleeve, the inner wall of the outer circulation sleeve, the hollow cavity part and the liquid inlet and outlet of the outer circulation sleeve. The device is equipped with a chrome-plated heat conduction spring, which can reduce the flow rate, guide the liquid to flow along the inner wall of the inner circulation sleeve, improve the uniformity of the liquid heating, increase the heating area and heating time of the liquid, improve the thermoelectric conversion efficiency, save electric energy, and have a good use effect ;The outer circulation sleeve cooperates with the inner circulation sleeve through high-temperature heat-conducting insulating glue, which can make full use of the heat of the two heating surfaces of the PTC heating strip, which improves the thermoelectric conversion efficiency and reduces the ambient temperature; the hollow cavity part of the outer circulation sleeve is a grid shape, which not only increases the strength of the outer circulation sleeve, but also increases the heat conduction area.

Description

A water and electricity separation type PTC liquid heater

technical field

The utility model relates to a heater, in particular to a water and electricity separation type PTC liquid heater.

Background technique

The liquid heater is a device used for liquid heating, which can heat liquids such as water and heat transfer oil. In recent years, PTC ceramic heating technology has developed rapidly in my country, and many liquid heater products made of PTC ceramic heating sheets have appeared on the market. Looking at these PTC liquid heaters, their basic structure is: heating the inside of the container It is a waterway, and a PTC heating strip is closely matched with the outer wall of the heating container. Straight tube type PTC liquid heater is the most common PTC liquid heater. The liquid flows through the hollow part of the inner wall of the PTC liquid heater, and the PTC heating strip is tightly fitted on the outer wall of the heater. During the heating process, the fast flowing liquid brings The heat from the heating surface of the PTC heating strip close to the outer wall of the heater is taken away to realize the real separation of water and electricity. The hollow part in the middle of the inner wall of the straight tube type PTC liquid heater is a cylinder with a diameter of 30mm and a length of 340mm, which is the liquid circulation part. Although straight-tube PTC liquid heaters can separate water and electricity, during the heating process, the fast-flowing liquid only takes away the heat from the heating surface of the PTC heating strip that is close to the outer wall of the heater. The other heating surface of the PTC heating strip The heat of the heat is scattered into the air in vain, the thermoelectric conversion is not fully utilized, and the temperature of the surrounding environment of the PTC liquid heater is increased; and the liquid close to the inner wall of the straight tube type PTC liquid heater absorbs the heat of the PTC heating strip, while the cylinder The liquid in the center gets very little heat.

Utility model content

The purpose of this utility model is to provide a water and electricity separation type PTC liquid heater to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A water and electricity separation type PTC liquid heater, including a PTC heating strip, an inner circulation sleeve, an outer circulation sleeve, a heat conduction and flow guide spring, and a liquid inlet and outlet. The inner circulation sleeve includes the outer wall of the inner circulation sleeve, the middle part of the inner circulation sleeve and the inner The inner wall of the circulation sleeve, the middle part of the inner circulation sleeve is located between the outer wall of the inner circulation sleeve and the inner wall of the inner circulation sleeve, the inner wall of the inner circulation sleeve is cylindrical, and the inner wall of the inner circulation sleeve is provided with a heat conduction spring for reducing the flow rate of the liquid and guiding the flow of the liquid , the surface of the heat-conducting and flow-conducting spring is treated with chrome plating, the top and bottom of the inner circulation sleeve are provided with liquid inlet and outlet, the number of PTC heating strips is four, and the inner surface of the outer wall of the inner circulation sleeve is press-fitted by a hydraulic device. The circulation sleeve and the outer circulation sleeve are closely matched through the 300°C high-temperature insulating and heat-conducting adhesive cured at room temperature. The outer circulation sleeve is a cuboid with a square cross section. The outer circulation sleeve is made of aluminum alloy. The outer circulation sleeve includes the outer wall of the outer circulation sleeve and the outer circulation sleeve. The inner wall of the sleeve, the hollow cavity part and the liquid inlet and outlet of the outer circulation sleeve, the hollow cavity part is located between the outer wall of the outer circulation sleeve and the inner wall of the outer circulation sleeve, and one side of the outer wall of the outer circulation sleeve is provided with an outer circulation sleeve for connecting with a liquid pipeline Liquid inlet and outlet, the inner wall of the outer circulation sleeve is 1mm larger than the outer wall of the inner circulation sleeve.

As a further solution of the utility model: the diameter of the liquid inlet and outlet of the outer circulation sleeve is 32mm.

As a further solution of the present invention: the thickness of the inner wall of the outer circulation sleeve is 1.63 mm, the thickness of the outer wall of the outer circulation sleeve is 3.17 mm, and the thickness of the hollow cavity part is 9.5 mm.

As a further solution of the present invention: the shape of the hollow cavity part is grid-like.

As a further solution of the utility model: the PTC heating strip is made of a PTC ceramic heating sheet.

Compared with the prior art, the beneficial effects of the utility model are: the device has reasonable design, low failure rate, and good stability in use; it is equipped with chrome-plated heat-conducting and flow-conducting springs, which can reduce the flow rate and guide the liquid to flow along the inner wall of the inner circulation sleeve. Improve the uniformity of heating of the liquid, increase the heating area and heating time of the liquid, improve the thermoelectric conversion efficiency, save electric energy, and have good use effects; the outer circulation sleeve cooperates with the inner circulation sleeve through high-temperature heat-conducting insulating glue, and makes full use of the two PTC heating strips to generate heat The heat from the surface improves the thermoelectric conversion efficiency and reduces the ambient temperature; the hollow cavity of the outer circulation sleeve is grid-shaped, which not only increases the strength of the outer circulation sleeve, but also increases the heat conduction area.

Description of drawings

Fig. 1 is a front view of a water and electricity separation type PTC liquid heater.

Fig. 2 is a top view of a water and electricity separation type PTC liquid heater.

Fig. 3 is the front view of the outer circulation sleeve in the water and electricity separation type PTC liquid heater.

Fig. 4 is a top view of the outer circulation sleeve in the water and electricity separation type PTC liquid heater.

Fig. 5 is a front view of the inner circulation sleeve in the water and electricity separation type PTC liquid heater.

Fig. 6 is a top view of the inner circulation sleeve in the water and electricity separation type PTC liquid heater.

Among them: 1-PTC heating strip, 2-inner circulation sleeve, 21-outer wall of inner circulation sleeve, 22-middle part of inner circulation sleeve, 23-inner wall of inner circulation sleeve, 3-outer circulation sleeve, 31-outer wall of outer circulation sleeve, 32 - the inner wall of the outer circulation sleeve, 33 - the hollow cavity part, 34 - the liquid inlet and outlet of the outer circulation sleeve, 4 - the heat conduction and flow guide spring, and 5 - the liquid inlet and outlet.

detailed description

The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

Please refer to Figure 1-6, a water and electricity separation type PTC liquid heater, including a PTC heating strip 1, an inner circulation sleeve 2, an outer circulation sleeve 3, a heat conduction spring 4 and a liquid inlet and outlet 5, the inner circulation sleeve 2 It includes the outer wall 21 of the inner circulation sleeve, the middle part 22 of the inner circulation sleeve and the inner wall 23 of the inner circulation sleeve. The middle part 22 of the inner circulation sleeve is located between the outer wall 21 of the inner circulation sleeve and the inner wall 23 of the inner circulation sleeve. The inner wall 23 of the inner circulation sleeve is cylindrical. The inner wall 23 of the inner circulation sleeve is provided with a heat conduction and flow guide spring 4 for reducing the liquid flow rate and guiding the liquid flow. The surface of the heat conduction and flow guide spring 4 is treated with chrome plating, and the top and bottom ends of the inner circulation sleeve 2 are provided with a liquid inlet and outlet 5. , the number of PTC heating strips 1 is four, and they are press-fitted on the inner surface of the outer wall 21 of the inner circulation sleeve by a hydraulic device. The sleeve 3 is a rectangular parallelepiped with a square section. The outer circulation sleeve 3 is made of aluminum alloy. The outer circulation sleeve 3 includes the outer wall 31 of the outer circulation sleeve, the inner wall 32 of the outer circulation sleeve, the hollow cavity part 33 and the liquid inlet and outlet 34 of the outer circulation sleeve. , the hollow cavity part 33 is located between the outer wall 31 of the outer circulation sleeve and the inner wall 32 of the outer circulation sleeve, and one side of the outer wall 31 of the outer circulation sleeve is provided with an inlet and outlet 34 for liquid of the outer circulation sleeve connected to the liquid pipeline, and the inner wall 32 of the outer circulation sleeve A gap of 1mm larger than the outer wall 21 of the inner circulation sleeve. The diameter of the liquid inlet and outlet 34 of the outer circulation cover is 32mm. The thickness of the inner wall of the outer circulation sleeve 3 is 1.63 mm, the thickness of the outer wall is 3.17 mm, and the thickness of the hollow cavity part is 9.5 mm. The hollow portion 33 has a grid shape and is provided with cooling strips. The PTC heating strip is made of PTC ceramic heating sheet.

The working principle of the utility model is: start the device, the liquid is connected with the liquid main pipeline through the liquid inlet and outlet 5 and the liquid inlet and outlet 34 of the outer circulation sleeve, forming a double liquid circulation system. Inner circulation sleeve 2 liquid circulation loop: the liquid passes through the liquid inlet and outlet 5 of the inner circulation sleeve 2, and is guided to flow through the heat conduction and flow guide spring 4. The chrome-plated heat conduction and flow guide spring 4 can reduce the flow rate, guide the liquid to flow along the inner wall 23 of the inner circulation sleeve, and improve The uniformity of liquid heating increases the heating area and heating time of the liquid and improves the thermoelectric conversion efficiency; after being heated by the PTC heating strip 1, the liquid in the inner circulation sleeve 2 passes through the liquid inlet and outlet 5 and finally connects with the liquid inlet and outlet 34 of the outer circulation sleeve The flowing liquid merges into the main pipeline, and the liquid absorbs heat evenly. Outer circulation sleeve 3 liquid circulation circuit: the liquid flows through the liquid inlet and outlet 34 of the outer circulation sleeve, absorbing the heat of the other heating surface of the PTC heating strip 1, so that the two heating surfaces of the PTC heating strip 1 are fully utilized, and the thermoelectricity is improved. The conversion efficiency reduces the ambient temperature. The hollow cavity part 33 of the outer circulation sleeve 3 is grid-shaped, which increases the strength of the outer circulation sleeve 3 and increases the heat conduction area. The heated liquid in the outer circulation sleeve 3 passes through the outer circulation sleeve The liquid inlet and outlet 34 finally merges with the heated liquid in the liquid inlet and outlet 5 of the inner circulation sleeve 2 to the main pipeline, the liquid absorbs heat evenly, and the thermoelectric efficiency is fully utilized. The device is reasonable in design, low in failure rate, and good in use stability; it is equipped with chrome-plated heat-conducting and flow-conducting spring 4, which can reduce the flow rate, guide the liquid to flow along the inner wall 23 of the inner circulation sleeve, improve the uniformity of heating of the liquid, increase the heating area of the liquid and The heating time improves the thermoelectric conversion efficiency, saves electric energy, and has a good use effect; the outer circulation sleeve 3 cooperates with the inner circulation sleeve 2 through high-temperature heat-conducting insulating glue, which can make full use of the heat of the two heating surfaces of the PTC heating strip 1, and improves the thermoelectric conversion efficiency , reducing the ambient temperature; the hollow cavity part 33 of the outer circulation sleeve 3 is grid-shaped, which not only increases the strength of the outer circulation sleeve 3, but also increases the heat conduction area.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation, and within the knowledge of those of ordinary skill in the art, it can also be made without departing from the purpose of this patent. Variations.

Claims (5)

1. an electricity separation formula PTC liquid heater, it is characterized in that, including PTC fire-bar, internal recycle set, outer circulation set, heat conduction water conservancy diversion spring and liquid entrance, described internal recycle set includes internal recycle set outer wall, internal recycle set mid portion and internal recycle set inwall, internal recycle set mid portion overlaps between outer wall and internal recycle set inwall at internal recycle, internal recycle set inwall is cylindrical, internal recycle set inwall is provided with for reducing flow rate of liquid and guiding the heat conduction water conservancy diversion spring of liquid flowing, the surface of heat conduction water conservancy diversion spring adopts chrome-plated process to process, top and the bottom of internal recycle set are provided with liquid entrance, the quantity of PTC fire-bar is four, and the inner surface of internal recycle set outer wall it is fitted in by hydraulic means, internal recycle set is closely cooperated by 300 DEG C of high-temperature insulation heat-conducting glue normal temperature cures with outer circulation set, outer circulation set is a cross section is foursquare cuboid, outer circulation set adopts aluminum alloy material to make, outer circulation set includes outer circulation set outer wall, outer circulation set inwall, hollow cavity part and outer circulation set liquid entrance, hollow cavity part is overlapped between outer wall and outer circulation set inwall in outer circulation, the side of outer circulation set outer wall is provided with the outer circulation set liquid entrance for being connected with fluid pipeline, the gap of outer circulation set inwall 1mm bigger than internal recycle set outer wall.

2. electricity separation formula PTC liquid heater according to claim 1, it is characterised in that the diameter of described outer circulation set liquid entrance is 32mm.

3. electricity separation formula PTC liquid heater according to claim 1 and 2, it is characterised in that the thickness of described outer circulation set inwall is 1.63mm, the thickness of outer circulation set outer wall is 3.17mm, and the thickness of hollow cavity part is 9.5mm.

4. electricity separation formula PTC liquid heater according to claim 3, it is characterised in that described hollow cavity part be shaped as lattice-shaped.

5. electricity separation formula PTC liquid heater according to claim 4, it is characterised in that described PTC fire-bar adopts PTC-ceramic fever tablet to make.