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CN103791182B - Pipe connection structure and kitchen range - Google Patents

Pipe connection structure and kitchen range Download PDF

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Publication number
CN103791182B
CN103791182B CN201410015343.5A CN201410015343A CN103791182B CN 103791182 B CN103791182 B CN 103791182B CN 201410015343 A CN201410015343 A CN 201410015343A CN 103791182 B CN103791182 B CN 103791182B
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China
Prior art keywords
connecting tube
joint
fastening piece
wall
connection structure
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CN201410015343.5A
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Chinese (zh)
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CN103791182A (en
Inventor
王成
周亮
欧阳晓华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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Priority to CN201410015343.5A priority Critical patent/CN103791182B/en
Publication of CN103791182A publication Critical patent/CN103791182A/en
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Publication of CN103791182B publication Critical patent/CN103791182B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/005Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts comprising locking means for the threaded member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F16L19/028Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)

Abstract

The invention provides a kind of pipe connection structure and the kitchen range comprising this pipe connection structure.This pipe connection structure comprises: the first connecting tube, the second connecting tube and fastening piece, the internal face of the first connecting tube is provided with connection step, and the step surface connecting step is inclined-plane, the outer wall of the second connecting tube is provided with the joint of protrusion, the outer wall of joint is also inclined-plane, and the angle angle in the outer wall of joint between inclined-plane, both sides be not more than step surface inclined-plane, both sides between angle angle, make, between the outer wall of step surface and joint, there is gap, the impacting force that fastening piece applies to the second connecting tube can make joint deform and be filled in gap, and the material hardness of joint is not more than the material hardness of the first connecting tube, joint is more easily deformed, can be full by gap-fill better, achieve closely cooperating of the first connecting tube and the second connecting tube, and pipe connection structure is simple, be connected firmly, and good sealing effect.

Description

Pipe connection structure and kitchen range
Technical field
The present invention relates to kitchen ware field, more specifically, relate to a kind of pipe connection structure and the kitchen range comprising this pipe connection structure.
Background technique
In existing kitchen products, still gap is there is after the end cup of kitchen range and aluminium tracheae install, there is very large gas leakage risk, make a concrete analysis of as follows: Fig. 1 is the structural representation of aluminium tracheae 1 ‵, aluminium tracheae 1 ‵ is provided with joint 10 ‵ of protrusion, included angle A between the outer wall of joint 10 ‵ is 90 degree, Fig. 2 is the structural representation of end cup 2 ‵, the internal face of end cup 2 ‵ is step surface, and the included angle B of step surface is 80 degree, B is made to be less than A, gap 4 ‵ is there is like this between the outer wall and the internal face of end cup 2 ‵ of joint 10 ‵, as shown in Figure 3, when end cup 2 ‵ and aluminium tracheae 1 ‵ installs, general employing tightening nut 3 ‵ is fixed, when screwing tightening nut 3 ‵, aluminium tracheae 1 ‵ can be subject to thrust upwards, because the material of aluminium tracheae 1 ‵ is softer, easily deform, joint 10 ‵ of aluminium tracheae 1 ‵ can deform under the effect of thrust, but this deformation cannot fill full gap 4 ‵, assemble between cup 2 ‵ of the rear end and aluminium tracheae 1 ‵ and still there is gap 4 ‵, as shown in Figure 4, aluminium tracheae 1 ‵ is caused cannot to be airtightly connected with end cup 2 ‵, there is very large gas leakage risk.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
For this reason, the object of one aspect of the invention is, provides a kind of body joint good seal, the pipe connection structure that can prevent body from leaking gas.
The object of another aspect of the present invention is, provides a kind of kitchen range comprising this pipe connection structure.
For achieving the above object, The embodiment provides a kind of pipe connection structure, comprising: the first connecting tube, the internal face of described first connecting tube is provided with connection step, the step surface of described connection step is inclined-plane; Second connecting tube, the outer wall of described second connecting tube is provided with the joint of protrusion, the outer wall of described joint is also inclined-plane, and one end of described second connecting tube is stretched in described first connecting tube, and the outer wall of described joint is resisted against on described step surface; And fastening piece, described first connecting tube is fixedly connected with the second connecting tube by described fastening piece, and applies impacting force to described second connecting tube; Angle angle in the outer wall of described joint between inclined-plane, both sides is not more than the angle angle between the inclined-plane, both sides of described step surface, make to have gap between the outer wall of described step surface and described joint, the impacting force that described fastening piece applies to described second connecting tube can make described joint deform and be filled in described gap.
The pipe connection structure that the above embodiment of the present invention provides, comprises the first connecting tube, the second connecting tube and fastening piece, and the internal face of the first connecting tube is provided with connection step, and the step surface connecting step is inclined-plane, the outer wall of the second connecting tube is provided with the joint of protrusion, and the outer wall of joint is also inclined-plane, and the angle on the inclined-plane, both sides of step surface is not less than the angle on the inclined-plane, both sides of joint outer wall, one end of second connecting tube is stretched into after in described first connecting tube, the joint of the second connecting tube can be resisted against on the step surface of the first connecting tube, angle due to the inclined-plane, both sides of step surface is not less than the angle on the inclined-plane, both sides of joint outer wall, so there is gap between step surface and the outer wall of joint, when first connecting tube is fixedly connected with the second connecting tube by fastening piece, an impacting force is applied to the second connecting tube, the joint of the second connecting tube is deformed, gap-fill between step surface and the outer wall of joint is full, make together with step surface fits tightly with the outer wall of joint, gapless between step surface and joint, achieve the firm connection of the first connecting tube and the second connecting tube and closely cooperate.
In sum, in the above embodiment of the present invention, the angle on inclined-plane, both sides in the joint outer wall being not less than the second connecting tube by the angle on inclined-plane, both sides on the step surface that arranges the first connecting tube, then by the gap of joint deformable filler between step surface and the outer wall of joint, achieve closely cooperating of the first connecting tube and the second connecting tube, pipe connection structure is simple, is connected firmly, and good sealing effect.
In addition, the pipe connection structure provided according to the above embodiment of the present invention also has following additional technical feature:
According to one embodiment of present invention, the material hardness of described first connecting tube is not less than the material hardness of described joint.
According to one embodiment of present invention, described joint and described second connecting tube are the integral structure adopting same material to make.
According to one embodiment of present invention, the two ends of described second connecting tube are equipped with described joint; And/or the internal face at described first connecting tube two ends is equipped with described connection step.
According to one embodiment of present invention, described pipe connection structure also comprises connection packing ring, described connection packing ring is the loop configuration of hollow, and one end open flare, described connection pad snare is located at outside described second connecting tube, and the opening of flare is towards described joint, described fastening piece extrudes described joint by described connection packing ring.
According to one embodiment of present invention, described fastening piece is set in outside described second connecting tube, and one end of described fastening piece is stretched in described first connecting tube, the outer wall of described fastening piece and the internal face bolt of described first connecting tube one end, described fastening piece one end stretched in described first connecting tube extrudes described connection packing ring and applies impacting force to described joint.
According to one embodiment of present invention, described fastening piece is set in outside described second connecting tube, and one end of described first connecting tube is stretched in described fastening piece, the outer wall bolt of the internal face of described fastening piece and one end of described first connecting tube, and the internal face of described fastening piece is provided with a spacing preiection, described spacing preiection extrudes described connection packing ring and applies impacting force to described joint.
The present invention embodiment on the other hand provides a kind of kitchen range, includes the pipe connection structure described in above-mentioned any embodiment.
According to one embodiment of present invention, described kitchen range are gas cooker, described gas cooker comprises two described first connecting tubes, first connecting tube described in one of them is the steam outlet pipe of gas control valve, first connecting tube described in another is the suction tude of burner, the two ends of described second connecting tube are equipped with described joint, and the described steam outlet pipe of described gas control valve is connected by described second connecting tube with the described suction tude of described burner.
According to one embodiment of present invention, described second connecting tube is aluminium tracheae, and the described joint at described second connecting tube two ends is the described aluminium tracheae radially bend pipe that formed of bending.
Additional aspect of the present invention and advantage become obvious by description part below, or are recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the aluminium tracheae according to correlation technique;
Fig. 2 is the structural representation of the end cup according to correlation technique;
Fig. 3 is the linkage structure schematic diagram of the aluminium tracheae shown in Fig. 1 and the end cup shown in Fig. 2;
Fig. 4 is the A portion structure enlarged diagram of Fig. 3;
Fig. 5 is the schematic diagram of the pipe connection structure according to one embodiment of the invention;
Fig. 6 and Fig. 7 is the B portion structure enlarged diagram of Fig. 5, and wherein Fig. 6 is the view before the joint distortion of the second connecting tube, and Fig. 7 is the view after the joint distortion of the second connecting tube;
Fig. 8 is the schematic diagram of pipe connection structure described according to a further embodiment of the invention;
Fig. 9 is the broken section structural representation of the gas cooker according to one embodiment of the invention.
Wherein, the corresponding relation in Fig. 1 to Fig. 4 between reference character and component names is:
1 ‵ aluminium tracheae, 10 ‵ joints, cup at the bottom of 2 ‵, 3 ‵ tightening nuts, 4 ‵ gaps
Corresponding relation in Fig. 5 to Fig. 9 between reference character and component names is:
1 gas cooker, 10 first links, 20 second links, 210 joints, 30 fastening pieces,
310 spacing preiections, 40 gaps, 50 connect packing ring, 60 gas control valves, 610 steam outlet pipes,
70 burners, 710 suction tude
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from mode described here to implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
The pipe connection structure and kitchen range that there is provided according to some embodiments of the invention are described with reference to the accompanying drawings.
The pipe connection structure provided according to some embodiments of the invention, as shown in Figures 5 to 7, comprises the first connecting tube 10, second connecting tube 20 and fastening piece 30.
Specifically, the internal face of described first connecting tube 10 is provided with connection step, the step surface of described connection step is inclined-plane;
The outer wall of described second connecting tube 20 is provided with the joint 210 of protrusion, the outer wall of described joint 210 is also inclined-plane, one end of described second connecting tube 20 is stretched in described first connecting tube 10, and the outer wall of described joint 210 is resisted against on described step surface;
Described first connecting tube 10 is fixedly connected with the second connecting tube 20 by described fastening piece 30, and applies impacting force to described second connecting tube 20;
Angle angle in the outer wall of described joint 210 between inclined-plane, both sides is not more than the angle angle between the inclined-plane, both sides of described step surface.
In a specific embodiment of the present invention, as shown in Figure 6, angle angle A in the outer wall of described joint 210 between inclined-plane, both sides is less than the angle angle B between the inclined-plane, both sides of described step surface, makes to have gap 40 between the outer wall of described step surface and described joint 210; The impacting force that described fastening piece 30 applies to described second connecting tube 20 can make described joint 210 deform and be filled in described gap 40, as shown in Figure 7.
The pipe connection structure that the above embodiment of the present invention provides, as shown in Figure 5 and Figure 6, comprise the first connecting tube 10, second connecting tube 20 and fastening piece 30, the internal face of the first connecting tube 10 is provided with connection step, and the step surface connecting step is inclined-plane, and the angle on the inclined-plane, both sides of step surface is B, the outer wall of the second connecting tube 20 is provided with the joint 210 of protrusion, the outer wall of joint 210 is also inclined-plane, and the angle on inclined-plane, both sides is A in the outer wall of joint 210, the included angle B on the inclined-plane, both sides of step surface is greater than the included angle A on the inclined-plane, both sides of joint 210 outer wall, one end of second connecting tube 20 is stretched into after in described first connecting tube 10, the joint 210 of the second connecting tube 20 can be resisted against on the step surface of the first connecting tube 10, as shown in Figure 6, included angle B due to the inclined-plane, both sides of step surface is greater than the included angle A on the inclined-plane, both sides of joint 210 outer wall, so there is gap 40 between the outer wall of step surface and joint 210, when first connecting tube 10 is fixedly connected with the second connecting tube 20 by fastening piece 30, an impacting force is applied to the second connecting tube 20, the joint 210 of the second connecting tube 20 is deformed, gap 40 between step surface and the outer wall of joint 210 is filled full, make together with step surface fits tightly with the outer wall of joint 210, as shown in Figure 7, gapless between step surface and joint 210, achieve the firm connection of the first connecting tube 10 and the second connecting tube 20 and closely cooperate, can not the phenomenon of gas or leak of liquid in generator tube.
In sum, in the above embodiment of the present invention, the angle on inclined-plane, both sides on the step surface being less than the first connecting tube by the angle on inclined-plane, both sides in the joint outer wall that arranges the second connecting tube, then by the gap of joint deformable filler between step surface and the outer wall of joint, achieve closely cooperating of the first connecting tube and the second connecting tube, pipe connection structure is simple, is connected firmly, and good sealing effect.
It has been generally acknowledged that in prior art, the internal diameter of outer sleeve (i.e. the first connecting tube) is less, when the external diameter of inner sleeve (i.e. the second connecting tube) is larger, easily realize being tightly connected of internal and external casing, and in the present invention, the internal diameter of outer sleeve (i.e. the first connecting tube) is larger, the external diameter of inner sleeve (i.e. the second connecting tube) is less, utilizes the distortion of inner sleeve, is filled in the gap of internal and external casing, realize being tightly connected of internal and external casing, overcome technology prejudice of the prior art.
It should be noted that, in above-mentioned specific embodiment of the present invention, the included angle B on inclined-plane, both sides on the step surface that in joint 210 outer wall of the second connecting tube 20, the included angle A on inclined-plane, both sides is less than the first connecting tube 10, the included angle B on inclined-plane, both sides in the included angle A on inclined-plane, both sides and the step surface of the first connecting tube 10 in joint 210 outer wall of the second connecting tube 20 can certainly be made equal, now the outer wall of the joint 210 of the second connecting tube 20 can realize being connected with the airtight of step surface of the first connecting tube 10 without the need to distortion, goal of the invention of the present invention can be realized equally, but consider in actual course of working to there is machining error, be difficult to ensure that included angle A is equal with B, therefore the preferred embodiments of the present invention are the mode that included angle A is less than B.
In a preferred embodiment, as shown in Figure 5, described joint 210 is the integral structure adopting same material to make with described second connecting tube 20.
In some embodiments of the invention, the material hardness of described first connecting tube 10 is not less than the material hardness of described joint 210.
In the preferred embodiment of the present invention, the material hardness of described first connecting tube 10 is greater than the material hardness of described joint 210.
Because the second connecting tube and joint are the integral structure adopting same material to make, the material hardness of the first connecting tube is greater than the material hardness of joint, namely the material hardness of the first connecting tube is greater than the material hardness of the second connecting tube, like this under the effect of the impacting force of fastening piece applying, because the hardness of joint is less, so joint easily deforms, and then can be full by the gap-fill between joint outer wall and step surface, realize fixedly securing and being tightly connected of the first connecting tube and the second connecting tube.
In another embodiment of the invention, described first connecting tube 10 and described second connecting tube 20 all adopt the soft material of matter to make, as: the material hardness of the first connecting tube 10 and the second connecting tube 20 is not all higher than the hardness of aluminium, because the hardness of aluminium is less, easily deform, the hardness of the first connecting tube 10 and the second connecting tube 20 is not higher than the hardness of aluminium, second connecting tube 20 and the first connecting tube 10 are easily deformed, under the effect of the impacting force of fastening piece 30, the joint 210 of the first connecting tube 10 and the second connecting tube 20 can deform simultaneously, gap-fill is full, the firm connection of the first connecting tube 10 and the second connecting tube 20 can be realized equally and be tightly connected.
In a specific embodiment of the present invention, as shown in Figure 9, the two ends of described second connecting tube 20 are equipped with described joint 210.
The two ends of the second connecting tube are equipped with joint, and like this, the often end of the second connecting tube all can be connected with one first connecting tube is airtight, achieves the airtight connection of two the first connecting tubes.
In another specific embodiment of the present invention, the internal face at described first connecting tube 10 two ends is equipped with described connection step.
The internal face at the first connecting tube two ends is equipped with connection step, and the often end of such first connecting tube all can be connected with one second connecting tube is airtight, achieves the airtight connection of two the second connecting tubes.
In a specific embodiment of the present invention, as shown in Figure 5, described pipe connection structure also comprises and connects packing ring 50.
Particularly, described connection packing ring 50 is the loop configuration of hollow, and one end open flare, described connection packing ring 50 is set in outside described second connecting tube 20, and the opening of flare is towards described joint 210, described fastening piece 30 extrudes described joint 210 by described connection packing ring 50.
Pipe connection structure also comprises connection packing ring, connecting packing ring is the loop configuration of hollow, and one end open flare, connecting packing ring can be set in outside the second connecting tube, and flaring opening is towards the joint of the second connecting tube, like this, fastening piece can apply an impacting force on connection packing ring, connect the outer wall in the internal face squeeze flow portion of packing ring, owing to connecting the opening flare of packing ring, the extruding degree connected between the internal face of packing ring and the outer wall of joint is violent gradually, joint is deformed gradually, and then the gap-fill between joint and step surface is full.
In one embodiment of this invention, as shown in Figure 5, described fastening piece 30 is set in outside described second connecting tube 20, and one end of described fastening piece 30 is stretched in described first connecting tube 10, the outer wall of described fastening piece 30 and the internal face bolt of described first connecting tube 10 one end, described fastening piece 30 one end stretched in described first connecting tube 10 extrudes described connection packing ring 50 and applies impacting force to described joint 210.
In another embodiment of the invention, as shown in Figure 8, described fastening piece 30 is set in outside described second connecting tube 20, and one end of described first connecting tube 10 is stretched in described fastening piece 30, the outer wall bolt of the internal face of described fastening piece 30 and one end of described first connecting tube 10, and the internal face of described fastening piece 30 is provided with a spacing preiection 310, described spacing preiection 310 extrudes described connection packing ring 50 and applies impacting force to described joint 210.
Fastening piece and the first connecting tube are spirally connected, along with screwing gradually of fastening piece, spacing preiection on fastening piece or end be squeeze flow packing ring gradually, connect the joint on packing ring and then extruding the second connecting tube, and screwing along with fastening piece, the impacting force being applied to joint increases gradually, and joint is deformed gradually, and then the gap-fill between joint and step surface is full.
The present invention embodiment on the other hand provides a kind of kitchen range, includes the pipe connection structure described in above-mentioned any embodiment, and has whole beneficial effects of above-mentioned tubular body linkage structure.
It should be noted that, the kitchen range described in the present invention on the other hand comprise built-in type cooker, free-standing kitchen range, also comprise the kitchen range combined with baking box, roaster.
In a specific embodiment of the present invention, as shown in Figure 9, described kitchen range are gas cooker 1, described gas cooker 1 comprises two described first connecting tubes 10, first connecting tube described in one of them is the steam outlet pipe 610 of gas control valve 60, first connecting tube described in another is the suction tude 710 of burner 70, the two ends of described second connecting tube 20 are equipped with described joint 210, and the steam outlet pipe 610 of described gas control valve 60 is connected by described second connecting tube 20 with the suction tude 710 of described burner 70.
Further, as shown in Figure 9, described second connecting tube 20 is aluminium tracheae, and the described joint 210 at described second connecting tube 20 two ends is the described aluminium tracheae radially bend pipe that formed of bending.
Kitchen range are gas cooker, and the steam outlet pipe of gas control valve is connected by above-mentioned pipe connection structure with the suction tude of burner with aluminium tracheae, aluminium tracheae, the steam outlet pipe achieving gas control valve is connected with the airtight of suction tude of burner with aluminium tracheae, aluminium tracheae, namely achieve the steam outlet pipe of gas control valve to be connected with the airtight of the suction tude of burner, the energy waste that can prevent gas leakage from causing on the one hand, can prevent gas leakage from causing danger on the other hand.
In sum, pipe connection structure provided by the invention, the angle on inclined-plane, both sides on the step surface being not more than the first connecting tube by the angle on inclined-plane, both sides in the joint outer wall that arranges the second connecting tube, then by the gap of the deformable filler of joint under extruding force effect between step surface and the outer wall of joint, achieve closely cooperating of the first connecting tube and the second connecting tube, and pipe connection structure is simple, is connected firmly, and good sealing effect; The material hardness of the joint of the second connecting tube is not more than the material hardness of the first connecting tube, joint is more easily deformed under extruding force effect, can be full by the gap-fill between step surface and the outer wall of joint better, realize the airtight connection of the first connecting tube and the second connecting tube.Therefore, in embodiments of the invention, make full use of the difference of material hardness between the first connecting tube and joint and the distortion of joint generation, achieve the airtight connection of the first connecting tube and the second connecting tube.
In describing the invention, term " is connected ", " fixing " etc. all should be interpreted broadly, and such as, " connection " can be fixedly connected with, and also can be removably connect, or connects integratedly; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, specific features, structure, material or feature that the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a pipe connection structure, comprising:
First connecting tube, the internal face of described first connecting tube is provided with connection step, and the step surface of described connection step is inclined-plane;
Second connecting tube, the outer wall of described second connecting tube is provided with the joint of protrusion, the outer wall of described joint is also inclined-plane, and one end of described second connecting tube is stretched in described first connecting tube, and the outer wall of described joint is resisted against on described step surface; With
Fastening piece, described first connecting tube is fixedly connected with the second connecting tube by described fastening piece, and applies impacting force to described second connecting tube, it is characterized in that,
Angle angle in the outer wall of described joint between inclined-plane, both sides is not more than the angle angle between the inclined-plane, both sides of described step surface, make to have gap between the outer wall of described step surface and described joint, the impacting force that described fastening piece applies to described second connecting tube can make described joint deform and be filled in described gap.
2. pipe connection structure according to claim 1, is characterized in that,
The material hardness of described first connecting tube is not less than the material hardness of described joint.
3. pipe connection structure according to claim 2, is characterized in that,
Described joint and described second connecting tube are the integral structure adopting same material to make.
4. pipe connection structure according to claim 3, is characterized in that,
The two ends of described second connecting tube are equipped with described joint; And/or
The internal face at described first connecting tube two ends is equipped with described connection step.
5. the pipe connection structure according to any one of claim 1-4, is characterized in that, also comprises:
Connect packing ring, described connection packing ring is the loop configuration of hollow, and one end open flare, described connection pad snare is located at outside described second connecting tube, and the opening of flare is towards described joint, described fastening piece extrudes described joint by described connection packing ring.
6. pipe connection structure according to claim 5, is characterized in that,
Described fastening piece is set in outside described second connecting tube, and one end of described fastening piece is stretched in described first connecting tube, the outer wall of described fastening piece and the internal face bolt of described first connecting tube one end, described fastening piece one end stretched in described first connecting tube extrudes described connection packing ring and applies impacting force to described joint.
7. pipe connection structure according to claim 5, is characterized in that,
Described fastening piece is set in outside described second connecting tube, and one end of described first connecting tube is stretched in described fastening piece, the outer wall bolt of the internal face of described fastening piece and one end of described first connecting tube, and the internal face of described fastening piece is provided with a spacing preiection, described spacing preiection extrudes described connection packing ring and applies impacting force to described joint.
8. kitchen range, is characterized in that, include the pipe connection structure according to any one of claim 1 to 7.
9. kitchen range according to claim 8, is characterized in that,
Described kitchen range are gas cooker, described gas cooker comprises two described first connecting tubes, first connecting tube described in one of them is the steam outlet pipe of gas control valve, first connecting tube described in another is the suction tude of burner, the two ends of described second connecting tube are equipped with described joint, and the described steam outlet pipe of described gas control valve is connected by described second connecting tube with the described suction tude of described burner.
10. kitchen range according to claim 9, is characterized in that,
Described second connecting tube is aluminium tracheae, and the described joint at described second connecting tube two ends is the described aluminium tracheae radially bend pipe that formed of bending.
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CN110542121A (en) * 2018-05-29 2019-12-06 青岛海尔智慧厨房电器有限公司 Connection structure and gas-cooker

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CN203718189U (en) * 2014-01-13 2014-07-16 广东美的厨房电器制造有限公司 Pipe body connection structure and stove

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NO170601B (en) * 1985-11-19 1992-07-27 Martin Norbert ROER CLUTCH
DE4238877A1 (en) * 1992-11-19 1994-05-26 Klaus Lehmann Screw connecting system for pipelines - has profiled cutting ring whose end side displaces pipe wall material to form seal during tightening.
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