CN211451371U

CN211451371U - PTC semiconductor electric heating plate type heat exchanger

Info

Publication number: CN211451371U
Application number: CN201922360457.4U
Authority: CN
Inventors: 王明东; 郑青山; 王发友
Original assignee: Wuhu Nizhen Environmental Protection Technology Co ltd
Current assignee: Wuhu Nizhen Environmental Protection Technology Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-08
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a PTC semiconductor electric heating plate heat exchanger, including the slab, seted up a plurality of mounting groove on the slab, be provided with PTC semiconductor electric heater in the mounting groove, PTC semiconductor electric heater includes the casing, and the casing side is provided with power supply wire rather than inside electric connection, and the casing surface has glued the one deck ceramic layer and wraps up PTC semiconductor electric heater, and the outside one deck heat conduction insulating film of wrapping up of ceramic layer scribbles heat conduction silicone grease on the mounting groove, and PTC semiconductor electric heater closes on the mounting groove through heat conduction silicone grease. The utility model discloses in, PTC semiconductor electric heater surface veneer one deck ceramic layer can play the insulating effect and prevent the electric breakdown, can not influence PTC semiconductor electric heater's heat exchange yet, and the outside parcel one deck heat conduction insulating film of ceramic layer further improves insulating nature in addition, the utility model discloses effectively prevent the emergence of the slab electric breakdown condition, promote product quality, reduce cost of maintenance.

Description

PTC semiconductor electric heating plate type heat exchanger

Technical Field

The utility model relates to a indirect heating equipment technical field especially relates to a PTC semiconductor electric heating plate heat exchanger.

Background

Patent No. CN201720676789.1 discloses a PTC semiconductor electric heating plate type heat exchanger, which is a heat exchange device for converting electric heat energy into water heat energy, wherein N PTC semiconductor electric heaters are arranged in a plate bundle, and are embedded in a stainless steel heat exchanger plate with a groove on one side, and after the PTC semiconductor electric heaters are electrified and heated, the heat exchange can be performed with the water medium flowing on the other side of the stainless steel heat exchanger plate, so that the heat exchange between the electric heat energy and the water heat energy is realized.

But the condition that the electricity broke down often appears slab PTC body in this heat exchanger use, in case the slab PTC body takes place the electricity and punctures, will have potential safety hazards such as electric leakage leaks, needs shut down the maintenance at once, if change untimely during the heating in the north, can cause the frozen pipe way, so just must change the slab, the expense is high, so to above-mentioned problem the utility model discloses a PTC semiconductor electric heating plate heat exchanger.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of proposing in the background art, and the PTC semiconductor electric heating plate type heat exchanger that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a PTC semiconductor electric heating plate heat exchanger, includes the slab, a plurality of mounting groove has been seted up on the slab, be provided with PTC semiconductor electric heater in the mounting groove, PTC semiconductor electric heater includes the casing, the casing side is provided with power supply wire and its inside electric connection.

Preferably, since the PTC semiconductor electric heater leaks electricity during heating, and the plate is subject to electric breakdown, and since this phenomenon occurs frequently, once the plate is subject to electric breakdown, the plate must be replaced, which is expensive, in order to prevent the above situation, a ceramic layer is glued on the surface of the housing to wrap the PTC semiconductor electric heater, and the ceramic layer has excellent heat conductivity and insulation, and can play a role of insulation to prevent electric breakdown, and does not affect the heat exchange of the PTC semiconductor electric heater.

Preferably, in order to further improve the insulation property of the PTC semiconductor electric heater, the ceramic layer is externally wrapped with a heat-conducting insulating film, and the heat-conducting insulating film is made of a polyimide film.

Preferably, in the prior art, a common adhesive is generally used for fixing the PTC semiconductor electric heater in the mounting groove, the common adhesive more or less has a certain heat exchange blocking effect, in the present scheme, the mounting groove is coated with a heat-conducting silicone grease, the heat-conducting silicone grease is a high heat-conducting insulating silicone material, and the PTC semiconductor electric heater is bonded to the mounting groove through the heat-conducting silicone grease.

Compared with the prior art, the utility model discloses possess following advantage:

the utility model discloses in, PTC semiconductor electric heater surface veneer one deck ceramic layer, pottery possess good thermal conductivity and insulating nature, can play the insulating action and prevent the electric breakdown, can not influence PTC semiconductor electric heater's heat exchange yet, and the outside one deck heat conduction insulating film of parcel of ceramic layer further improves insulating nature in addition, the utility model provides high PTC semiconductor electric heater is at the insulating nature of heat exchange in-process, effectively prevents the emergence of the slab electric breakdown condition, promotes product quality, reduces cost of maintenance.

Drawings

Fig. 1 is a schematic structural diagram of a PTC semiconductor electric heating plate type heat exchanger according to the present invention;

fig. 2 is a schematic structural diagram of the housing according to the present invention;

fig. 3 is a schematic structural diagram of a ceramic layer according to the present invention;

fig. 4 is a schematic structural diagram of the insulating film according to the present invention.

In the figure: 1 sheet, 2 mounting grooves, 21 heat-conducting silicone grease, 3PTC semiconductor electric heater, 31 shell, 32 power supply lead, 33 ceramic layer, 34 insulating film.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1, the PTC semiconductor electric heating plate type heat exchanger includes a plate 1, a plurality of mounting grooves 2 are opened on the plate 1, and PTC semiconductor electric heaters 3 are provided in the mounting grooves 2.

Referring to fig. 2, the PTC semiconductor electric heater 3 includes a case 31, and a power supply lead 32 is provided at a side of the case 31 to be electrically connected to the inside thereof.

Referring to fig. 3, as the PTC semiconductor electric heater 3 will leak electricity during heating, the plate 1 will be electrically broken down, and the frequency of occurrence of this phenomenon is high, once the plate 1 is electrically broken down, the plate must be replaced, and the cost is high, therefore, in order to prevent the above situation, a ceramic layer 33 is glued on the surface of the shell 31 to wrap the PTC semiconductor electric heater 3, the ceramic has excellent heat conductivity and insulation, which can play a role of insulation to prevent electrical breakdown, and will not affect the heat exchange of the PTC semiconductor electric heater 3, the side surface uses the special high temperature resistant silica gel seal of PTC to prevent water vapor from entering, and the service life of PTC can be prolonged.

Referring to fig. 4, in order to further improve the insulation of the PTC semiconductor electric heater 3, a heat conductive insulating film 34 is coated outside the ceramic layer 33, and a polyimide film is used as the heat conductive insulating film 34.

It should be noted that, referring to fig. 1, the PTC semiconductor electric heater 3 is fixed in the mounting groove 2 by using a common adhesive or without using an adhesive in the prior art, in the present embodiment, the mounting groove 2 is coated with a heat-conducting silicone grease 21, the heat-conducting silicone grease 21 is a high heat-conducting insulating silicone material, and the PTC semiconductor electric heater 3 is glued on the mounting groove 2 through the heat-conducting silicone grease 21.

The principle of the utility model is as follows:

PTC semiconductor electric heater 3 is in the heat exchange process of electrothermal energy and hydrothermal energy, the electric leakage condition can appear, in this scheme, 3 surface veneer one deck ceramic layers 33 of PTC semiconductor electric heater, pottery possess good thermal conductivity and insulating nature, can play the insulating action and prevent the electric breakdown, can not influence PTC semiconductor electric heater 3's heat exchange yet, and ceramic layer 33 outside parcel one deck heat conduction insulating film 34 in addition further improves insulating nature, the utility model provides high PTC semiconductor electric heater 3 is at the insulating nature of heat exchange in-process, effectively prevents the emergence of the 1 electric breakdown condition of slab, promotes product quality, reduces cost of maintenance.

In the present invention, unless otherwise expressly stated or limited, the terms "sliding", "rotating", "fixed", "provided", and the like are to be understood in a broad sense, e.g. as welded connections, as bolted connections, or as integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a PTC semiconductor electric heating plate heat exchanger, includes slab (1), its characterized in that, a plurality of mounting groove (2) have been seted up on slab (1), be provided with PTC semiconductor electric heater (3) in mounting groove (2), PTC semiconductor electric heater (3) include casing (31), casing (31) side is provided with power supply wire (32) and its inside electric connection, casing (31) surface veneer has one deck ceramic layer (33) to incite somebody to action PTC semiconductor electric heater (3) are wrapped up, ceramic layer (33) outside parcel one deck heat conduction insulating film (34), scribble heat conduction silicone grease (21) on mounting groove (2), PTC semiconductor electric heater (3) pass through heat conduction silicone grease (21) glue in on mounting groove (2).

2. A PTC semiconductor electrically-heated plate heat exchanger according to claim 1, wherein the thermally conductive insulating film (34) is a polyimide film.