High-power PTC (Positive Temperature Coefficient) liquid heater

Abstract

The utility model discloses a high-power PTC liquid heater which comprises a shell, a heating cavity is formed in the shell, a water inlet cavity and a water outlet cavity are formed in the front end and the rear end of the heating cavity respectively, a water inlet and a water outlet are formed in the water inlet cavity and the water outlet cavity respectively, and a plurality of partition plates are arranged in the heating cavity. The front ends and the rear ends of the multiple partition plates are connected to the front side face and the rear side face of the heating cavity in a staggered and sealed mode to form an S-shaped water channel, a PTC heating assembly for heating liquid is arranged between every two adjacent partition plates, the outer side face of the shell is wrapped with a heat preservation shell, and a first heat preservation layer and a second heat preservation layer are arranged in the heat preservation shell. A foam plastic layer is arranged between the first heat preservation layer and the second heat preservation layer. The heating device has the advantage of high heating efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to high -power PTC liquid heater technical field relates to a high -power PTC liquid heater. BACKGROUND

[0002] PTC liquid heater is a kind of equipment using PTC material as heating element, for heating liquid, PTC element is a kind of special ceramic material, with the temperature increases, the resistance value also increases with the characteristics.

[0003] The utility model discloses a high -power liquid heater, including water tank, and the water tank is set in several water channels and several PTC heating components, also includes several insulation fixing pieces, two insulation fixing pieces and PTC heating component are set between two adjacent water channels, and the electrode terminal of PTC heating component is set between two insulation fixing pieces. The technical scheme is through insulation fixing piece, the electrode terminal of PTC heating component is set between two insulation fixing pieces, but the technical scheme is not provided with heat preservation device, PTC heating component can produce heat loss waste when heating liquid, and then affect heating efficiency. UTILITY MODEL CONTENTS

[0004] For the above problems, the utility model provides a kind of high -power PTC liquid heater, and the problems in prior art are well solved.

[0005] In order to realize the above purpose, the utility model adopts the technical scheme as follows: a kind of high -power PTC liquid heater, including shell, the heating cavity is set in the shell interior, the heating cavity front and rear ends are set water inlet cavity and drainage cavity, the water inlet cavity and drainage cavity are respectively set with water inlet and drainage, the heating cavity is provided with multiple partitions, the front and rear ends of multiple partitions are sealed to the front and rear sides of heating cavity staggered, to form the water channel of "S" shape, PTC heating component for heating liquid is set between two adjacent partitions, the outer side of shell is covered with heat preservation shell, first heat preservation layer and second heat preservation layer are set in the heat preservation shell, foam plastic layer is set between the first heat preservation layer and second heat preservation layer.

[0006] Further, the material of the first heat preservation layer is rock wool.

[0007] Further, the material of the second heat preservation layer is air gel.

[0008] Further, the PTC heating assembly comprises a PTC heating plate, a ceramic layer is coated on the outer side of the PTC heating plate, a PTC mounting plate is arranged on the side of the shell, the upper side of the PTC heating plate is connected and fixed with the lower side of the PTC mounting plate, and the PTC heating plate is electrically connected with the PTC mounting plate.

[0009] Further, the lower side of the PTC mounting plate is provided with a high-temperature-resistant sealing gasket in sealing contact with the upper side of the shell.

[0010] Further, the drain port is provided with a temperature control valve.

[0011] Compared with the prior art, the PTC heating assembly has the following beneficial effects:

[0012] The heat loss in the shell is reduced, and the heating efficiency of the liquid heater is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a horizontal structure schematic view of the utility model;

[0014] Figure 2 It is a longitudinal structure schematic view of the utility model;

[0015] Figure 3 It is a top view of the utility model.

[0016] 1, shell; 2, partition; 3, PTC heating plate; 4, PTC mounting plate; 5, heat preservation shell; 6, first heat preservation layer; 7, foamed plastic layer; 8, second heat preservation layer; 9, temperature control valve; 10, high-temperature-resistant sealing gasket; 11, ceramic layer; 101, water inlet cavity; 102, drain cavity; 103, heating cavity; 104, water inlet; 105, drain port. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] As Figure 1 , Figure 2 ,Figure 3 As shown in the figure, a high-power PTC liquid heater comprises a shell 1, a heating cavity 103 is formed inside the shell 1, a water inlet cavity 101 and a water outlet cavity 102 are formed at the front and rear ends of the heating cavity 103, a water inlet 104 and a water outlet 105 are formed in the water inlet cavity 101 and the water outlet cavity 102 respectively, a plurality of partitions 2 are welded in the heating cavity 103, the front and rear ends of the plurality of partitions 2 are staggered and sealed to the front and rear sides of the heating cavity 103 to form an "S"-shaped water channel, the two ends of the water channel are communicated with the water inlet cavity 101 and the water outlet cavity 102 respectively, a PTC heating assembly for heating liquid is arranged between two adjacent partitions 2, a heat preservation shell 5 is coated on the outer side of the shell 1, a first heat preservation layer 6 and a second heat preservation layer 8 are arranged in the heat preservation shell 5, and a foamed plastic layer 7 is arranged between the first heat preservation layer 6 and the second heat preservation layer 8.

[0019] In use, the liquid to be heated enters the water inlet cavity 101 through the water inlet 104, then enters the heating cavity 103 through the water inlet cavity 101, the liquid to be heated flows along the water channel in the heating cavity 103, and the PTC heating assembly in the water channel heats the liquid at the same time, the "S"-shaped water channel prolongs the heating path of the liquid, improves the heating efficiency of the liquid heater, and the liquid after heating enters the water outlet cavity 102, then is discharged along the water outlet 105, while the liquid is heated, the heat preservation shell 5 and the first heat preservation layer 6, the second heat preservation layer 8 and the foamed plastic layer 7 in the heat preservation shell 5 can heat preservation of the shell 1, through the multi-stage heat insulation and heat preservation structure, the heat loss in the shell 1 is effectively reduced, thereby improving the heating efficiency of the heater.

[0020] In this embodiment, the material of the first heat preservation layer 6 is rock wool, which has good high temperature resistance and fireproof performance in use, and is suitable for heat preservation and heat insulation of the heater, and the fiber structure in the rock wool can effectively reduce heat conduction.

[0021] In this embodiment, the material of the second heat preservation layer 8 is aerogel, which is the lightest material known at present and has excellent heat insulation performance, its nanoscale structure can effectively block heat conduction, and the thermal conductivity of aerogel is extremely low, which can be effectively applied to the heat preservation and heat insulation of the heater.

[0022] In the embodiment, the PTC heating assembly comprises a PTC heating plate 3, an outer side of the PTC heating plate 3 is coated with a ceramic layer 11, the shell 1 is provided with a PTC mounting plate 4 on a side, the PTC heating plate 3 is connected and fixed with the PTC mounting plate 4 on an upper side, the PTC heating plate 3 is electrically connected with the PTC mounting plate 4, the PTC heating plate 3 is a prior art, and details are not described herein again, in use, the PTC heating plate 3 can heat the surrounding liquid, and the PTC mounting plate 4 can provide the PTC heating plate 3 with electric energy and electrical connection, so that the reliability of heating the liquid is ensured.

[0023] In the embodiment, the PTC mounting plate 4 is provided with a high-temperature-resistant sealing gasket 10 in sealing contact with an upper side of the shell 1, in use, the high-temperature-resistant sealing gasket 10 improves the sealing between the PTC mounting plate 4 and the shell 1, prevents the liquid in the shell 1 from flowing out, and meanwhile, the high-temperature-resistant sealing gasket 10 can prevent the PTC mounting plate 4 from directly contacting the high-temperature liquid, thereby prolonging the service life of the PTC mounting plate 4.

[0024] In the embodiment, the drain port 105 is provided with a temperature control valve 9, in use, the temperature control valve 9 can detect the temperature of the liquid passing through the drain port 105, and when the temperature of the liquid is insufficient, the temperature control valve 9 is closed to prevent the liquid with insufficient temperature from flowing out, thereby ensuring the heating effect of the liquid heater.

[0025] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-power PTC liquid heater, comprising a shell, a heating cavity is formed in the interior of the shell, a water inlet cavity and a water outlet cavity are formed at the front and rear ends of the heating cavity, and a water inlet and a water outlet are respectively formed in the water inlet cavity and the water outlet cavity. The heating cavity is provided with a plurality of partitions, the front and rear ends of the plurality of partitions are sealed to the front and rear sides of the heating cavity in a staggered manner to form an "S"-shaped water channel, a PTC heating assembly for heating liquid is arranged between two adjacent partitions, the outer side of the shell is covered with a heat preservation shell, the heat preservation shell is provided with a first heat preservation layer and a second heat preservation layer, and a foamed plastic layer is arranged between the first heat preservation layer and the second heat preservation layer.

2. A high power PTC liquid heater as claimed in claim 1, wherein: The material of the first heat preservation layer is rock wool.

3. A high power PTC liquid heater as claimed in claim 1, wherein: The material of the second heat preservation layer is aerogel.

4. A high power PTC liquid heater as claimed in claim 1, wherein: The PTC heating assembly comprises a PTC heating plate, the outer side of the PTC heating plate is covered with a ceramic layer, the shell side is provided with a PTC mounting plate, the upper side of the PTC heating plate is connected and fixed to the lower side of the PTC mounting plate, and the PTC heating plate is electrically connected with the PTC mounting plate.

5. A high power PTC liquid heater as claimed in claim 4, wherein: The lower side of the PTC mounting plate is provided with a high-temperature-resistant sealing gasket in sealing contact with the upper side of the shell.

6. A high power PTC liquid heater as claimed in claim 1, wherein: The drain port is provided with a temperature control valve.

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