Waterproof and/or dustproof protection of electrical connection of tubular radiation emitter and application of such protection

The present invention subject is a waterproof and/or dustproof protection of electrical connection of tubular radiation emitter and application of such protection in heating radiator, with tubular emitter of infrared radiation. Waterproof and dustproof protection of electrical connection of tubular radiation emitter is applicable in devices with tubular emitter of visible, ultrafiolet, infrared, etc. radiation. Advantageously, the present invention is applied to devices that work on open spaces or with high moisture and/or dust conditions.

It is well known solution according to the prior art, where electrical conductor lead out from tubular radiation emitter is connected with supply conductor and that connection is usually placed in ceramic block, and this latter is in the radiator housing. This protection do not meet requirements of fire safety as they refer to electrical devices working on open space.

Moreover, a radiant devices with tubular radiation emitter are also known, and these are of safe version made that is they have electrical contacts protection against moisture. In such solutions, design lead to tight structure of whole radiation emitter. It is also known such solution where metal made base of electrical elements within a waterproof lighting fitting is fixed on bottom of plastics made mount, and then to that construction a reflector, fluorescent lamps and upper screen are fixed.

In case of infrared radiation heating radiators, a totally enclosed form make problems with heat abstraction from electrical conductors connecting area, emitter and housing, as working such type devices cause as high temperatures getting up around an infrared radiation emitter.

According to the patent specification No P-364033, is known the infrared radiation heating radiator with tubular radiation emitter placed in reflector and fixed at housing side walls, that is connected with luminous

radiator while both radiators housings are located along one axis and connected each other, whereas a group of supply conductors of individual radiation sources is run through mutual channel. In this radiator type, a thermal protection of alone conductor outlet is realized, and thermal insulation of both radiation sources is provided, whereas this solution do not assure protection against moisture the electrical connection of radiation emitter with supply conductor.

Next, according to the patent specification No W02005036928, the radiation device is known where a heating radiation emitter is protected against vibration or mechanical stresses as they create due to thermal expansion in such type of devices. This device includes a supporting mount provided with two hooking assemblies that carry a tubular radiation emitter. The tubular radiation emitter is connected with said hooking assemblies though elastic connection elements, each placed on the end of the radiation emitter, so as it act both as shock absorber and sealing agent. The hooking assemblies allocate a screening space to assure protection of electrical connections terminals.

Mentioned and known solutions to protect connection against moisture have not universal application, and they are destined to the definite one version of the radiation emitter housing.

A purpose of this invention is to develop an universal solution that could protect a connection against moisture independent of the radiation emitter housing structure, and also independent of itself emitter structure.

The waterproof and/or dustproof protection of electrical connection of the tubular radiation emitter fixed in housing that includes a screen that determines a hermetic space within it a connection is placed, while from side of the radiation emitter said hermetic space is limited by elastic element that is tight placed on the end of the radiation emitter, and is characterized by the present invention as the screen that determines a hermetic space form a separate element, not related by shape with the tubular radiation emitter housing, and it placed direct around the electrical

connection, the tubular radiation emitter, while the screen includes at least a seals and passage, and the latter from one side adheres circumferentially with inner or outer part of its surface to a seal that is located on the end of the tubular radiation emitter, whereas from other side it adheres circumferentially with inner or outer part of its surface to the second seal and this adheres to the supply conductors envelope or it adheres, preferably, to the end of additional elastic envelope of the supply conductors.

The waterproof and/or dustproof protection of electrical connection of the tubular radiation emitter is also characterized by it as the end of the additional envelope of the supply conductors include a rigid neck bushing on that the supply conductors elastic envelope is clamped.

The waterproof and/or dustproof protection of electrical connection of the tubular radiation emitter is also characterized by it as the additional elastic envelope of the supply conductors include the latter on their the whole length up to fixing on the electrical plug.

The waterproof and/or dustproof protection of electrical connection of the tubular radiation emitter is also characterized by it as the elastic seal that adheres to outer surface of the passage is a form of circumferentially closed profile with longitudinal port that section is matched from one side to shape of the passage outer part, to that it touches, while from the other side to the section of such part of the tubular radiation emitter to which is fixed, or to the section of the supply conductor envelope, or to the end of the supply conductors additional envelope.

The waterproof and/or dustproof protection of electrical connection of the tubular radiation emitter, in accordance with invention, is characterized by it as a seal that adheres to the passage inner surface is a form of profile, advantageously sectional, and it is circumferentially closed after connecting and tight matched to the joint surface with the passage inner part, and tight matched to the section of such part of the tubular

radiation emitter on which is fixed, while an individual parts of the profile are mutual jointed by the binding material.

The waterproof and/or dustproof protection of electrical connection of the tubular radiation emitter, in accordance with invention, is characterized by it as the passage has a geometric axis, straight or curved, and includes at least of one circumferentially closed profile with port, and/or a profile in a form of the through tee.

The waterproof and/or dustproof protection of electrical connection of the tubular radiation emitter, in accordance with invention, is characterized by it as the passage advantageously includes or is connected with at least one radiator.

The heating radiator with the tubular emitter of infrared radiation, fixed in the housing, with reflector and with electrical connection of the tubular emitter and of the supply conductor, protected against moisture and dustiness, in accordance with invention, and is characterized by it as includes the waterproof and/or dustproof protection of electrical connection of the tubular radiation emitter as they are presented in this invention.

The heating radiator, in accordance with invention, is characterized by it as a seals of connection envelope and of supply conductors envelope are made of elastic material resistant to high temperature.

The heating radiator is also characterized by it as the passage is made of high thermal conductivity material, as cooper, preferably.

The heating radiator is characterized by it as a cooling agent is advantageously introduced to space inside of the connection envelope.

The heating radiator is characterized by it as the radiator is advantageously filled with a cooling agent.

The waterproof and/or dustproof protection of electrical connection of the tubular radiation emitter, made in accordance with invention, is structural simple, universal as for application, and it effective protects an electrical contacts against moisture and dust, therefore meet a safety requirements refer to the devices working on outside space, or with

conditions of high moisture or dustiness. Also, application of such connection protection in the heating radiators with the infrared radiation emitter cause as this type of radiators are applied not only to heat a cafe gardens or on terraces, but they could be also used in manufacturing processes. In addition, that technical solution create much costs reduction of the radiator itself, and cause as the radiator structure is not only safe but also light and aesthetic. Distinguished feature of solution according to the invention is also possibility of quick exchange damaged radiation emitter, and fact as with such type of technical solution there is no need to use the full screen on the emitter what increase radiation efficiency by about 20%. In version with solid seals that enter to the passage interior, it is possible to take advantage with the screen of such structure in the radiators with the tubular emitter of infrared radiation, with large density of infrared radiation, and this much increase universality of this invention usage. This solution is universal at application because it is independent of the radiator housing shape.

Technical solution according to the invention is illustrated by execution examples on the drawing, in which: - Figure 1 is a section of the waterproof and dustproof protection of electrical connection of the tubular radiation emitter, and such connection is made a t the temporary connection version where connecting is in the ceramic block, while the passage geometric axis is straight, and the seals are double-side fixed on the outer side surfaces of the passage; - Figure 2 is a section of a seal fixed on the outer side surface of the passage, matched by shape to its mounting in the radiator side housing; - Figure 3 shows the same connection protection with a seal at side of the tubular radiation emitter where said seal is fixed in side of the passage; - Figure 4 shows a seal fixed inside of the passage, in view showing a seal already prepared to fix it on the end of the tubular radiation emitter; - Figure 5 shows the connection protection that such connection is made as inseparable version, by way of example as welded construction, with the passage

consisting of three parts; - Figure 6 shows the passage with radiators placed on p art of its outer surface; - Figure 7 shows the passage, by way of example, of curved geometrical axis; - Figure 8 shows a passage in form of the tee; - Figure 9 shows the connection protection in that screen is connected with additional supply conductor envelope as a one hermetic whole; - Figure 10 shows application of the electrical connection of the tubular radiation emitter, in the heating radiator, in which the radiation emitter is mounted in the housing side walls; - Figure 11 shows application of the connection protection of the tubular radiation emitter, in the heating radiator in which the radiation emitter is mounted in the housing side walls, whereas the passage has a tee form with heat abstraction to the radiator; - Figure 12 shows application of the connection protection in the h eating radiator in which the infrared radiation emitter of large density radiation is placed in the elastic clamp fixed to the radiator bottom what give additional heat abstraction to the housing. Is this example, the connection envelope is used with a seal located inside of the passage.

On the execution example illustrated on Figure 1 , the waterproof and dustproof protection of tubular radiation emitter is a screen 1 inside of it the supply connection 2 is placed that composes a separable connection of conductor 3 leads out from the tubular radiation emitter 4 and from a supply conductor 5, and these conductors are connected in the ceramic block 6. The screen 1 comprises a single passage 7 of straight geometric axis and of elastic silicone seals 8 and 9 made of high temperature resistant silicone. Said seals 8 and 9 are of bell shape with central opening passing along a geometric axis. The seal 8 adheres circumferential to the outer side surface of the passage 7 and adheres also circumferential to the tubular radiation emitter 4. Said seal 8 shown in version on Figure 2 has additionally made circumferential channel 10. The seal 9 adheres circumferential to the outer part side surface of the passage 7, and adheres circumferential to the envelope 11 of the supply conductor 5.

Referring to the further execution example illustrated on Figure 3, the connection protection is shown, and it is used preferably in the radiators with the tubular radiation emitter of large density infrared radiation. On the presented version, the screen 1 at tubular radiation emitter 4 is provided with double part seal 8 that enters to the passage 7 interior and said seal is covered with bond agent 12 on its jointing places, as is shown on Figure 4. The bond agent has a form of silicone glue resistant to 800C temperature.

On the next execution example illustrated on Figure 5, the protection of electrical connection of the tubular radiation emitter is shown, and such the supply connection 2 is made as a inseparable connection, welded, for example, of the conductor 3 lead out from the radiation emitter 4 and from supply conductor 5. On this example, the passage 7 of the screen 1 consists with three interconnected profiles 13, 14 and 15, and these profiles are of bushes shape, whereas the middle profile 14, in version, could take a form of profile with radiators 16, as shown on Figure 6, or in still other version, could take a form of elbow, as shown on Figure 7.

On the still further execution example illustrated on Figure 9, the connection joined with additional envelope of the supply conductor in the one hermetic whole is shown. In the said connection the seal 9 made of high temperatures resistant silicone adheres circumferential to the end 17 of the elastic envelope 18 also made of high temperature resistant silicone. Such envelope 18 includes the supply conductor 5 on it total length up-to the plug 19. The end 17 of the envelope 18 composes the flanged metal bushing 20 to that the envelope 18 is clamped. Such configuration of the end 17 cause as the seal 9 could be permanent joined with the envelope 18 to form a hermetic sealing.

On the execution example, the heating radiator of the infrared radiation emitter in which the waterproof and dustproof protection of the electrical connection of the tubular radiation emitter, consists with the

tubular radiation emitter 4 which has a form of the filament that emits an infrared radiation and is placed in the reflector 21. Such radiation emitter 4 together with the connection screen 1 is placed in the fixing elements 22 connected with the housing 23 of the heating radiator. Above said fixing elements 22 enter into channels 10 of the seals 8 made of high temperature resistant silicone. Each of seals 8 at internal side of fixing element 22 comprises the radiation emitter 4 whereas at outer side of fixing element 22 it includes the passage 7 profile tightly. The passage 7 is made of good heat conducting material, as copper, by way of example. On the other side, the passage 7 and envelope 11 of the supply conductor 5 are included within the seal 9 made of high temperature resistant silicone.

Further execution example shows the heating radiator with the infrared radiation emitter, as in the first example, whereas the passage 7 has a form of the tee illustrated on Figure 8 while the radiator 16 is connected with the passage 7, and it has a form of curved profile lead out of the radiator housing 23.

In the next execution example, the heating radiator with the infrared radiation emitter in which the waterproof and dustproof protection of the electrical connection of the tubular radiation emitter is applied, the radiation emitter 4 together with the connection screen 1 is placed on the brackets 24 fixed to the reflector 21. Said brackets 24 are made in a form of elastic elements in which the radiation emitter 4 together with the connection screen 1 is fixed by pushing in. A space in the passage 7 is filled with cooling agent 25 additionally. The screen 1 from side of the tubular radiation emitter 4 is provided with the seal 8 that enters inside of the passage 7. In such example, from side of the supply conductor 5 the connection screen 1 is applied in version with the envelope 17 of the supply conductor 5.