CN208332353U - Airflow line and micro-wave oven - Google Patents

Abstract

The utility model discloses a kind of airflow line and micro-wave oven, wherein, airflow line includes air intake duct and sprue, air intake duct includes the first air intake duct and the second air intake duct, the distal end of sprue is equipped with flue outlet, and the proximal end of sprue is equipped with the junction of the first sprue entrance and the second sprue entrance, sprue and the first air intake duct and the second air intake duct in smooth transition setting, from bottom to up, the first air intake duct and the second air intake duct are in be extended towards the bending of the distal end of sprue.In technical solution provided by the utility model, by the way that the independent airflow line is arranged in the micro-wave oven, the problem that turning is more in exhaust gases passes can be reduced, and the first air intake duct and the second air intake duct are in be extended towards the bending of the distal end of sprue, so that the total distance of airflow line is shortened as far as possible, linear loss of the flue gas in airflow line is thus greatly reduced.

Description

Airflow line and micro-wave oven

Technical field

The utility model relates to microwave cooking engineering device technique field, in particular to a kind of airflow line and micro-wave oven.

Background technique

In the prior art, many micro-wave ovens have the function of microwave heating and suction oil smoke, such as wall hanging type micro-wave simultaneously Furnace is typically mounted on above cooking stove, is generally possible to carry out microwave heating and suction oil smoke simultaneously, such microwave oven internal is generally set There are the exhaust gases passes that the flue gas for suction passes through.In the prior art, as shown in Figure 1, the exhaust gases passes of microwave oven internal pass through Partition 205 is set in micro-wave oven and to be formed every setting, this aspect causes the assembly precision to micro-wave oven more demanding；Another party Face, every setting, turning in the exhaust gases passes to be formed is more, and flue gas flows through vortex easy to form when the turning of exhaust gases passes, to hinder The flowing of flue gas leads to the low efficiency for aspirating oil smoke.

Utility model content

The main purpose of the utility model is to propose a kind of airflow line and micro-wave oven, it is intended to solve existing micro-wave oven Exhaust gases passes set-up mode there are various drawbacks.

To achieve the above object, the utility model proposes a kind of airflow line, be installed on the inner wall chamber of micro-wave oven, it is described Airflow line includes:

Air intake duct, including vertically to the first air intake duct of extension and the second air intake duct, first air intake duct and described The lower end of second air intake duct is equipped with flue entrance, and upper end is equipped with air intake port；And

Sprue, along left and right to extending to be formed proximally and distally, the distal end of the sprue is equipped with flue outlet, described The proximal end of sprue is equipped with for the first sprue entrance of first air intake duct access and accesses for second air intake duct The second sprue entrance, the junction of the sprue and first air intake duct and second air intake duct is in smooth transition Setting, so that deriving from the flue gas that the flue entrance enters gently flows into the sprue from the air intake duct, and from the cigarette Road outlet discharge；

Wherein, from bottom to up, first air intake duct and second air intake duct are in towards the distal end of the sprue Bending is extended.

Preferably, first air intake duct and the second air intake duct are arranged in front and back to spacing side by side；

Wherein, the first sprue entrance is set to the front side wall of the sprue, and the second sprue entrance is set to The proximal end wall or lower wall of the sprue.

Preferably, the flue outlet be set to the distal end upper side wall on, and be located at the sprue upper side wall with The intersection of distal end wall.

Preferably, it is arranged between the distal end wall and lower wall of the sprue in arc transition, it will be in the sprue Flue gas gently flowed out from the distal end wall water conservancy diversion from the flue outlet；And/or

The upper side wall of the sprue and the intersection of proximal end wall are arranged in arc transition, will be from first sprue The flue gas that entrance and the second sprue entrance enter gently is directed in the sprue.

Preferably, first air intake duct includes successively from bottom to top including the first inlet mouth section, the first air intake duct Interlude and the first air intake port section, the first air intake duct interlude and the first inlet mouth section and described the The junction of one air intake port section is in smooth transition setting, and the first air intake port section smoothly connects with the proximal end It connects；

Second air intake duct includes the second inlet mouth section, the second air intake duct interlude and the second air intake port Section, the second air intake duct interlude and the junction of the second inlet mouth section and the second air intake port section are equal It is arranged in smooth transition, the second air intake port section is smoothly connected with the proximal end.

Preferably, upward in front and back, the flue entrance of the flue entrance of first air intake duct and second air intake duct, Deviate respectively air intake port setting towards the same side, and the flue entrance of second air intake duct is closer to the sprue Entrance setting.

Preferably, the direction that first air intake duct and second air intake duct mutually deviate from be it is outside, it is close to each other Direction is inside；

The side wall that first air intake duct is in outside is located at the first inlet mouth section with the side wall for being in inside Part, it is corresponding in the first spline surface protruded outward and the setting of the second spline surface；

The side wall that second air intake duct is in outside is located at the second inlet mouth section with the side wall for being in inside Part, it is corresponding in the third spline surface protruded inwardly and the setting of the 4th spline surface.

Preferably, the tonicity of spline curve corresponding to first spline surface is T1, the second spline surface institute The tonicity of corresponding spline curve is T2, and the tonicity of spline curve corresponding to the third spline surface is T3, the described 4th The tonicity of spline curve corresponding to spline surface is T4, wherein 0.5≤T1, T2, T3, T4≤1.

Preferably, from top to bottom, the first sprue entrance is in and is obliquely installed towards the proximal end of the sprue.

Preferably, the cross sectional shape parallelogram setting of the first sprue entrance, and there is court from top to bottom To inclined two bevel edges in the proximal end.

Preferably, the inclination angle of the first sprue entrance is 50 °~80 °；And/or

The flue entrance of first air intake duct is a in the upward size in left and right, and the first sprue entrance is in left and right Upward size is b, and a≤b≤2a.

Preferably, second air intake duct is connect with the lower wall of the sprue, and from bottom to up, second air inlet The junction of the lower wall in road and the sprue is arranged in the arc-shaped transition that radius is R, and 10mm≤R≤80mm.

Preferably, the area of the flue entrance of second air intake duct and the second sprue entrance is suitable；And/or

The sum of the area of the flue outlet and the area of flue entrance of first air intake duct and the second air intake duct phase When.

Preferably, the section of the air intake duct and/or the sprue is square, round or ellipse is arranged.

Preferably, the airflow line further includes auxiliary flue, and the auxiliary flue is vertically to extension, and the auxiliary The lower end of flue is auxiliary flue entrance, and the auxiliary flue entrance is connected to the lower end of first air intake duct, described auxiliary Help the upper end of flue for auxiliary flue outlet.

The utility model also provides a kind of micro-wave oven, comprising:

Shell, has accommodating chamber, and the shell is equipped with air inlet and air outlet；

Inner casing is set in the accommodating chamber, and the shell and the inner casing limit inner wall chamber；

Airflow line, the airflow line include air intake duct and sprue, and the air intake duct includes vertically to extension The first air intake duct and the second air intake duct, the lower end of first air intake duct and second air intake duct is equipped with flue entrance, Upper end is equipped with air intake port, and the sprue edge is controlled to extension to be formed proximally and distally, the distal end of the sprue Equipped with flue outlet, the proximal end of the sprue is equipped with the first sprue entrance for first air intake duct access and supplies Second sprue entrance of the second air intake duct access, the sprue and first air intake duct and second air intake duct Junction in smooth transition setting so that derive from the flue entrance enter flue gas gently flowed into from the air intake duct described in Sprue, and be discharged from the flue outlet, wherein from bottom to up, first air intake duct and second air intake duct are in It is extended towards the bending of the distal end of the sprue；And

Blower is set in the flue gas flow path, to by the flue gas of the air inlet along the airflow line to described Air outlet conveying.

Preferably, first air intake duct and the second air intake duct are arranged at the shell and the inner casing in left and right orientation On two neighboring side wall between.

Preferably, the blower is set between the flue entrance and the air inlet, and the flue entrance passes through method Blue device is connected with the outlet air end of the outer cover of the blower；And/or

The rear wall of the shell is arranged in the air outlet, after the flue outlet is by spiro connecting piece and the shell Side wall is connected, alternatively, the roof of the shell is arranged in the air outlet, the flue outlet passes through spiro connecting piece and the shell Roof connection or be set to the shell roof on the inside of upper air outlet baffle connect.

Preferably, the airflow line further includes auxiliary flue, and the auxiliary flue is vertically to extension, and the auxiliary The lower end of flue is auxiliary flue entrance, and the auxiliary flue entrance is connected to the lower end of first air intake duct, described auxiliary Help the upper end of flue for auxiliary flue outlet；

Cavity is formed in the front side wall of the shell, and the upper end of the front side wall of the shell offers and the cavity The auxiliary air-outlet of connection, wherein the auxiliary flue outlet is connected by spiro connecting piece with the front side wall of the shell, with institute State cavity connection.

In technical solution provided by the utility model, by the way that the independent airflow line is arranged in the micro-wave oven, Realize the function of micro-wave oven suction oil smoke, the airflow line can reduce the problem that turning is more in exhaust gases passes, Also, the junction of the air intake duct and the sprue is so reduced in smooth transition setting in the airflow line The obstruction of flow of flue gas has greatly improved the efficiency of the suction oil smoke of the micro-wave oven, meanwhile, first air intake duct and institute Stating the second air intake duct is in be extended towards the bending of the distal end of the sprue, so that from first air intake duct and institute The air-flow for stating the second air intake duct into the sprue all has the component towards the flue outlet direction, in this way, on the one hand It avoids two strands of air-flows from influencing each other too greatly when importing because direction is deviateed too much, and causes biggish windage loss, another party Face all has the component towards the flue outlet direction because of two strands of air-flows, and it is more straight that air-flow is advanced in the airflow line It connects towards the flue outlet, and equally reduces linear loss of the air-flow in the airflow line.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the structural schematic diagram of an embodiment of existing micro-wave oven；

Fig. 2 is the structural schematic diagram of an embodiment of micro-wave oven provided by the utility model；

Fig. 3 is the structural schematic diagram of the airflow line in Fig. 2；

Fig. 4 is the forward sight structural schematic diagram of Fig. 3；

Fig. 5 is the backsight structural representation of Fig. 3；

Fig. 6 is the overlooking structure diagram of Fig. 3；

Fig. 7 is the right side structural representation of Fig. 3；

Fig. 8 is the partial structure diagram in Fig. 2.

Drawing reference numeral explanation:

The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, fall within the protection scope of the utility model.

It is to be appreciated that directionality instruction is only used for solving if relating to directionality instruction in the utility model embodiment Relative positional relationship, the motion conditions etc. between component each under a certain particular pose are released, if the particular pose changes When, then directionality instruction also correspondingly changes correspondingly.

In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve The combination of case is not present, also not within the protection scope of the requires of the utility model.

The utility model proposes a kind of micro-wave oven, Fig. 2 to Fig. 8 is an embodiment of micro-wave oven provided by the utility model.

Fig. 2, Fig. 3 and Fig. 8 are please referred to, in the present embodiment, the micro-wave oven 200 includes shell 201, inner casing 203, blower 204 and airflow line 100, the shell 201 has accommodating chamber, and the shell 201 is equipped with air inlet and air outlet 202, The inner casing 203 is set in the accommodating chamber, and the shell 201 and the inner casing 203 limit inner wall chamber, the gas flow tube Road 100 is set to the inner wall chamber, and the airflow line 100 has flue entrance 11 and flue outlet 21, the flue entrance 11 Correspondence is connected with the air inlet, and (in the present embodiment, the blower 204 is set to the flue entrance 11 and the air inlet Between, and the flue entrance 11 is connected by flange apparatus 4 with the outlet air end of the outer cover of the blower 204, so set, institute It states flue entrance 11 and the outer cover matching degree of the blower 204 is better, it is also smaller to loss caused by air-flow flowing, and And the flue entrance 11 can also be kept consistent with the shapes and sizes of outlet air end of outer cover of the blower 204, to improve Matching degree between the two reduces the energy loss of flue gas), the flue outlet 21 is connected (at this with the air outlet 202 In embodiment, the flue outlet 21 with the air outlet 202 is connected by spiro connecting piece, specifically, when the outlet air When the rear wall of the shell 201 is arranged in mouth 202, i.e., the described micro-wave oven 200 is to discharge fume backwards, and the flue outlet 21 passes through Spiro connecting piece is connected with the rear wall of the shell 201, when the roof of the shell 201 is arranged in the air outlet 202, i.e. institute Stating micro-wave oven 200 is to discharge fume upward, and the flue outlet 21 can be connect by spiro connecting piece with the roof of the shell 201, also Can be the flue outlet 21 can be by spiro connecting piece and the upper air outlet baffle 5 on the inside of the roof for being set to the shell 201 Connection, so set, convenient for the installation between the flue outlet 21 and the air outlet 202, also, can also keep described Flue outlet 21 is consistent with the shapes and sizes of the air outlet 202, to improve matching degree between the two, reduces the energy of flue gas Amount loss), flue gas flow path is collectively formed, (blower 204 can be to be set the blower 204 in the flue gas flow path It sets inside the airflow line 100, also can be set in the outside of the airflow line 100, specifically, in the present embodiment In, the blower 204 is set between the flue entrance 11 and the air inlet, in this way, it is easy to the installation of the blower 204, Also can reduce the constraint that the airflow line 100 is arranged in the blower 204), to by the flue gas of the air inlet along institute Airflow line 100 is stated to convey to the air outlet 202.It generally, is to offer left air inlet on the bottom wall of the micro-wave oven 200 With two air inlets of right air inlet, therefore the left air inlet and the right air inlet can be corresponded to, on a left side for the inner wall chamber Right two sides are respectively provided with the blower 204 and the airflow line 100, aspirate oil smoke to further strengthen the micro-wave oven 200 Function.

The airflow line 100 includes air intake duct and sprue 2, and the air intake duct includes vertically to the first of extension (in the present embodiment, the first air intake duct 1a and the second air intake duct 1b is arranged described by air intake duct 1a and the second air intake duct 1b Shell 201 and the inner casing 203 are between the two neighboring side wall in the orientation of left and right), the first air intake duct 1a and institute The lower end for stating the second air intake duct 1b is equipped with flue entrance 11, and upper end is equipped with air intake port 12, and the sprue 2 is along left and right To extending to form proximally and distally (in the present embodiment, for right end, the distal end is left end for the proximal end), the sprue 2 distal end is equipped with flue outlet 21, and the proximal end of the sprue 2 is equipped with the first sprue for the first air intake duct 1a access Entrance 22 (please referring to Fig. 4) and the second sprue entrance 23 (please referring to Fig. 5) accessed for the second air intake duct 1b, institute The junction for stating sprue 2 and the first air intake duct 1a and the second air intake duct 1b is arranged in smooth transition (in this implementation In example, it is welded to connect between the sprue 2 and the air intake duct), so as to derive from the flue gas that the flue entrance 11 enters The sprue 2 is gently flowed into from the air intake duct, and is discharged from the flue outlet 21, wherein from bottom to up, described first Air intake duct 1a and the second air intake duct 1b is in be extended towards the bending of the distal end of the sprue 2.

In technical solution provided by the utility model, by the way that the independent gas flow tube is arranged in the micro-wave oven 200 Road 100, to realize that the micro-wave oven 200 aspirates the function of oil smoke, the airflow line 100 can reduce turning in exhaust gases passes More problem, also, the junction of the sprue 2 and the first air intake duct 1a and the second air intake duct 1b are in smooth Transition setting, so that deriving from the flue gas that the flue entrance 11 enters gently flows into the sprue 2 from the air intake duct, and certainly The flue outlet 21 is discharged, and so reduces the obstruction to flow of flue gas in the airflow line 100, has greatly improved institute The efficiency of the suction oil smoke of micro-wave oven 200 is stated, meanwhile, the first air intake duct 1a and the second air intake duct 1b are in towards institute The distal end bending for stating sprue 2 is extended, so that entering from the first air intake duct 1a and the second air intake duct 1b The air-flow of the sprue 2 all has the component towards 21 direction of flue outlet, in this way, on the one hand two strands of air-flows is avoided to exist It influences each other too greatly when remittance because direction is deviateed too much, and causes biggish windage loss, on the other hand because two strands of air-flows are equal With the component towards 21 direction of flue outlet, and air-flow is made more to be directly toward institute in the airflow line 100 traveling Flue outlet 21 is stated, and equally reduces linear loss of the air-flow in the airflow line 100.

Flue gas is inhaled into the airflow line 100 from the air intake duct, is come eventually by the sprue 2 to outlet Out, the cross sectional shape of the air intake duct and/or the sprue 2 can not constrain, can be square, round or ellipse Setting, please refers to Fig. 3 and Fig. 4, in the present embodiment, the sprue 2 specifically includes front side wall 24, rear wall 25, upper side wall 26, lower wall 27 and proximal end wall 28 and distal end wall 29.

The first air intake duct 1a and the second air intake duct 1b is that two draft fans of the corresponding blower 204 are arranged, In order to make the structure of the micro-wave oven 200 more compact, described two draft fans are to be arranged in front and back to spacing side by side, relatively It answers, the first air intake duct 1a and the second air intake duct 1b are arranged in front and back to spacing side by side.

It is in the curved distal towards the sprue 2 by the way that the first air intake duct 1a and the second air intake duct 1b is arranged Song is extended, and to shorten the total distance of the airflow line 100, is flowed in the airflow line 100 to reduce flue gas When energy loss.The first air intake duct 1a and the second air intake duct 1b is corresponding to pass through 22 He of the first sprue entrance The second sprue entrance 23, to access the sprue 2, the first sprue entrance 22 be can be set on the mainstream The front side wall 24 or lower wall 27 in road 2, likewise, the second sprue entrance 23 can be set on the sprue 2 Proximal end wall 28 or lower wall 27 specifically please refer to Fig. 4 and Fig. 5, in the present embodiment, the first sprue entrance 22 Set on the front side wall 24 of the sprue 2, the second sprue entrance 23 is set to the lower wall 27 of the sprue 2, in this way The first air intake duct 1a and the second air intake duct 1b are correspondingly arranged in the front side wall 24 and lower wall of the sprue 2 27, so that the total distance of the airflow line 100 is further shortened, so that the energy loss of flue gas is relatively small.

The specific set-up mode of front side wall 24 for the first sprue entrance 22 in the sprue 2, specifically, Referring to Fig. 4, in the present embodiment, from top to bottom, the first sprue entrance 22 is in incline towards the proximal end of the sprue 2 Tiltedly setting, the bending for advantageously forming the first air intake duct 1a towards the distal end of the sprue 2 in this way are extended, can also To shorten the distance in the first air intake duct 1a, meanwhile, it is also beneficial to reduce the first air intake duct 1a and the second air intake duct Two strands of flue gases converge to generated energy loss when the sprue 2 in 1b.

Further, when the first sprue entrance 22 cross sectional shape parallelogram be arranged, and have from up to When lower two bevel edges inclined towards the proximal end, it is not only easy to process the first sprue entrance 22, first air inlet Distance in road 1a is also relatively short, also, parallelogram is relative to other shapes, joint face between two spaces antarafacial mouth Angularity it is relatively low, when such flue gas is imported into the sprue 2 from the first air intake duct 1a, gas energy loss compared with It is small.

When the inclination angle of the first sprue entrance 22 is 50 °~80 ° (in the present embodiment, as L1 and L2 it Between angle), the angularity of joint face between two spaces antarafacial mouth can be reduced to the maximum extent, reduce flue gas energy damage It loses.Meanwhile the side L3 of the first sprue entrance 22 meet assembly do not interfere under conditions of more toward the distal direction It deviates, distance also can be shorter in the first sprue entrance 22, and gas energy loss is also smaller.

When the flue entrance 11 of the first air intake duct 1a is a, the first sprue entrance in the upward size in left and right 22 in the upward size in left and right be b, and when a≤b≤2a, can reduce the first air intake duct 1a changes of section bring flue gas The loss of energy.

The specific set-up mode of the lower wall 27 of the sprue 2 is set to for the second sprue entrance 23, specifically Ground please refers to Fig. 5 and Fig. 6, in the present embodiment, from bottom to up, the lower wall of the second air intake duct 1b and the sprue 2 27 connections, and the arc-shaped transition that the junction of the lower wall 27 of the second air intake duct 1b and the sprue 2 is R in radius Setting, and 10mm≤R≤80mm are can reduce in this way when the flue gas in the second air intake duct 1b enters the sprue 2 Energy loss.Also, R value is bigger under conditions of meeting assembly and not interfering, and the energy loss of flue gas is smaller.

In order to reduce the second air intake duct 1b changes of section bring loss, in the present embodiment, it can keep described The area of the flue entrance 11 of second air intake duct 1b and the second sprue entrance 23 is suitable.Meanwhile referring to Fig. 6, guaranteeing institute It, can taking by R under the premise of the area of the flue entrance 11 and the second sprue entrance 23 of stating the second air intake duct 1b is comparable Value, the offset distance C between flue entrance 11 and the second sprue entrance 23 to determine the second air intake duct 1b.

The flue gas of the sprue 2 is pooled to from the first air intake duct 1a and the second air intake duct 1b, eventually by The sprue 2 is discharged in the flue outlet 21, and the sprue 2 is equipped with the flue outlet 21, and the flue outlet 21 are docked with the air outlet 202 on the shell 201, not according to 202 set-up mode of air outlet of the micro-wave oven 200 Together, the flue outlet 21 would also vary from, the general air outlet 202 be opened in the shell 201 roof or Rear wall, specifically, referring to Fig. 2, in the present embodiment, the air outlet 202 is the roof for being opened in the shell 201 , corresponding, the flue outlet 21 is provided on the upper side wall 26 of the distal end, and be located at the upper side wall 26 with it is described The intersection of distal end wall 29.

Further, because the sprue 2 is left and right to extension, thus flue gas be in the sprue 2 along left and right to Flowing, finally from the discharge upwards of the flue outlet 21, in order to reduce flue gas be converted to from left and right to flowing flow up when, The sprue 2 is to the resistance of flue gas, referring to Fig. 3, in the present embodiment, between the distal end wall 29 and the lower wall 27 It is arranged in arc transition, by the flue gas in the sprue 2 gently from 29 water conservancy diversion of distal end wall from the flue outlet 21 outflows, in this way, reducing energy loss brought by distal end wall 29 described in smoke-shock, greatly improve the micro-wave oven The efficiency of 200 suction oil smoke.

In order to reduce energy loss of the flue gas when the first air intake duct 1a and the second air intake duct 1b flows, at this In embodiment, the first air intake duct 1a include include from bottom to top successively the first inlet mouth section, among the first air intake duct Section and the first air intake port section, the first air intake duct interlude and the first inlet mouth section and described first into The junction of air passage outlet section is in smooth transition setting, and the first air intake port section is smoothly connected with the proximal end, institute It states the second air intake duct 1b and includes the second inlet mouth section, the second air intake duct interlude and the second air intake port section, it is described Second air intake duct interlude and the junction of the second inlet mouth section and the second air intake port section are in smooth Transition setting, the second air intake port section is smoothly connected with the proximal end, so set, not only can reduce flue gas in institute State energy loss when the first air intake duct 1a and the second air intake duct 1b flow, also, the first air intake port section and Proximal end described in the second air intake port Duan Junyu is smoothly connected, and so can reduce the first air intake duct 1a and described Energy loss when flue gas is pooled to the sprue 2 in two air intake duct 1b.

Enter the mainstream from the first sprue entrance 22 and the second sprue entrance 23 also in flue gas When road 2, reduce the energy loss of flue gas, in the present embodiment, the upper side wall 26 of the sprue 2 and the intersection of proximal end wall 28 It is arranged in arc transition, the flue gas entered from the first sprue entrance 22 and the second sprue entrance 23 is gently guided In to the sprue 2, so set, reducing flue gas to the upper side wall 26 of the sprue 2 and the impact institute of proximal end wall 28 Bring energy loss.

Generally, the sprue 2 is proximate to the rear surface setting of the inner wall chamber of the micro-wave oven 200, corresponding, Referring to Fig. 7, in the present embodiment, the flue entrance 11 of the first air intake duct 1a and second air inlet upward in front and back The flue entrance 11 of road 1b deviates the respectively air intake port 12 towards the same side and is arranged, and the cigarette of the second air intake duct 1b The entrance of road entrance 11 closer to the sprue 2 is arranged, so that the first air intake duct 1a and the second air intake duct 1b is in herringbone Shape setting, because the flue entrance 11 of the first air intake duct 1a and the flue entrance 11 of the second air intake duct 1b are towards same lateral deviation From, so that it is more compact in 100 structure of the airflow line, and make the folder of the first air intake duct 1a and the second air intake duct 1b Angle is smaller and reduces interfering with each other after the flue gas in the two imports, and then is convenient for the convergence of flue gas.

Specifically, because the first air intake duct 1a and the second air intake duct 1b is arranged in front and back to spacing side by side, and The flue entrance 11 of the second air intake duct 1b closer to the sprue 2 entrance, in order to allow the first air intake duct 1a and The second air intake duct 1b can finally be pooled to the inlet of the sprue 2, the first air intake duct 1a and described second The direction that air intake duct 1b mutually deviates from is that outside, close to each other direction is inside；The first air intake duct 1a is in outside Side wall and the side wall for being in inside are located at the part of the first inlet mouth section, corresponding in the first batten protruded outward Curved surface and the setting of the second spline surface；The second air intake duct 1b is in the side wall in outside and is in the side wall of inside positioned at described The part of second inlet mouth section, it is corresponding in the third spline surface protruded inwardly and the setting of the 4th spline surface, so Setting, can not only allow the first air intake duct 1a and the second air intake duct 1b to be all docked to the inlet of the sprue 2, Interference will not be generated with other component simultaneously, also, by the first air intake duct 1a's and the second air intake duct 1b The optimization design of structure reduces energy loss of the flue gas in the first air intake duct 1a and the second air intake duct 1b.

Further, referring to Fig. 7, in the present embodiment, the tonicity of spline curve corresponding to first spline surface (there is a plurality of and tangent spline curve of both ends reference line setting between fixed two o'clock, tonicity is bigger, and spline curve is more bent, Spline curve Duan Yuechang between two o'clock) it is T1, the tonicity of spline curve corresponding to second spline surface is T2, The tonicity of spline curve corresponding to the third spline surface is T3, spline curve corresponding to the 4th spline surface Tonicity is T4, when spline curve tonicity T1, T2, T3, T4 take between 0.5 to 1, so that flue gas is discharged into institute from the blower 204 There is a bit of breeze way when stating the flue entrance 11 of the first air intake duct 1a and the second air intake duct 1b, avoids flue gas and directly rush Hit vias inner walls face bring energy loss.

To minimize the airflow line 100 due to runner expansion, contraction bring flow losses, can be set described The sum of area of flue entrance 11 of the area of flue outlet 21 and the first air intake duct 1a and the second air intake duct 1b is quite.

In order to increase the versatility of the airflow line 100, the airflow line 100 is allowed to be suitable for the described of various types Micro-wave oven 200 please refers to Fig. 3 and Fig. 4, and in the present embodiment, the airflow line 100 further includes auxiliary flue 3, the auxiliary Flue 3 is vertically to extension, and the lower end of the auxiliary flue 3 is auxiliary flue entrance 31, and the auxiliary flue entrance 31 It is connected to the lower end of the first air intake duct 1a, the upper end of the auxiliary flue 3 is auxiliary flue outlet 32 (in the present embodiment In, cavity is formed in the front side wall of the shell 201, the upper end of the front side wall offers the auxiliary being connected to the cavity Air outlet, wherein the auxiliary flue outlet 32 is connected by spiro connecting piece with the front side wall of the shell 201, with the chamber Body connection), by the way that the auxiliary flue 3 is arranged, the airflow line 100 can be allowed to be applicable to the described micro- of front side smoke evacuation Wave furnace 200.

Further, in order to reduce flue gas it is described auxiliary flue 3 in energy loss, in the present embodiment, the auxiliary Flue 3 includes vertically to the auxiliary flue of extension into cigarette section 33 and from the auxiliary flue into cigarette section 33 towards far from described The auxiliary flue smoke section 34 that sprue 2 extends, wherein the auxiliary flue is into cigarette section 33 and the auxiliary flue smoke section 34 Intersection in arc transition be arranged.

The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model, It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.

Claims (19)

1. a kind of airflow line is installed on the inner wall chamber of micro-wave oven, which is characterized in that the airflow line includes:

Air intake duct, including vertically to the first air intake duct of extension and the second air intake duct, first air intake duct and described second The lower end of air intake duct is equipped with flue entrance, and upper end is equipped with air intake port；And

Sprue, along left and right to extending to be formed proximally and distally, the distal end of the sprue is equipped with flue outlet, the mainstream The proximal end in road is equipped with for the first sprue entrance of first air intake duct access and for the of second air intake duct access Two sprue entrances, the sprue are set with the junction of first air intake duct and second air intake duct in smooth transition It sets, so that deriving from the flue gas that the flue entrance enters gently flows into the sprue from the air intake duct, and from the flue Outlet discharge；

Wherein, from bottom to up, first air intake duct and second air intake duct are in be bent towards the distal end of the sprue It is extended.

2. airflow line as described in claim 1, which is characterized in that first air intake duct and the second air intake duct front and back to Spacing side by side setting；

Wherein, the first sprue entrance is set to the front side wall of the sprue, and the second sprue entrance is set to described The proximal end wall or lower wall of sprue.

3. airflow line as claimed in claim 2, which is characterized in that the flue outlet is set to the upper side wall of the distal end On, and it is located at the upper side wall of the sprue and the intersection of distal end wall.

4. airflow line as claimed in claim 3, which is characterized in that in circle between the distal end wall and lower wall of the sprue Arc transition setting, the flue gas in the sprue is gently flowed out from the distal end wall water conservancy diversion from the flue outlet；With/ Or,

The upper side wall of the sprue and the intersection of proximal end wall are arranged in arc transition, will be from the first sprue entrance The flue gas entered with the second sprue entrance is gently directed in the sprue.

5. airflow line as claimed in claim 2, which is characterized in that first air intake duct includes successively including from bottom to top First inlet mouth section, the first air intake duct interlude and the first air intake port section, the first air intake duct interlude with The junction of the first inlet mouth section and the first air intake port section be in smooth transition setting, described first into Air passage outlet section is smoothly connected with the proximal end；

Second air intake duct includes the second inlet mouth section, the second air intake duct interlude and the second air intake port section, The second air intake duct interlude and the junction of the second inlet mouth section and the second air intake port section are in Smooth transition setting, the second air intake port section are smoothly connected with the proximal end.

6. airflow line as claimed in claim 5, which is characterized in that upward in front and back, the flue of first air intake duct enters Mouthful and second air intake duct flue entrance, deviate respectively air intake port setting towards the same side, and described second into The entrance of the flue entrance of air flue closer to the sprue is arranged.

7. airflow line as claimed in claim 6, which is characterized in that first air intake duct and second air intake duct are mutual The direction deviated from is that outside, close to each other direction is inside；

The side wall that first air intake duct is in outside is located at the portion of the first inlet mouth section with the side wall for being in inside Point, it is corresponding in the first spline surface protruded outward and the setting of the second spline surface；

The side wall that second air intake duct is in outside is located at the portion of the second inlet mouth section with the side wall for being in inside Point, it is corresponding in the third spline surface protruded inwardly and the setting of the 4th spline surface.

8. airflow line as claimed in claim 7, which is characterized in that spline curve corresponding to first spline surface Tonicity is T1, and the tonicity of spline curve corresponding to second spline surface is T2, corresponding to the third spline surface The tonicity of spline curve is T3, and the tonicity of spline curve corresponding to the 4th spline surface is T4, wherein 0.5≤T1, T2、T3、T4≤1。

9. airflow line as claimed in claim 2, which is characterized in that from top to bottom, the first sprue entrance is in direction The proximal end of the sprue is obliquely installed.

10. airflow line as claimed in claim 9, which is characterized in that the cross sectional shape of the first sprue entrance is in flat The setting of row quadrangle, and have from top to bottom towards inclined two bevel edges in the proximal end.

11. the airflow line as described in claim 9 or 10, which is characterized in that the inclination angle of the first sprue entrance is 50 °~80 °；And/or

The flue entrance of first air intake duct is a in the upward size in left and right, and the first sprue entrance is upward in left and right Size be b, and a≤b≤2a.

12. airflow line as described in claim 1, which is characterized in that the downside of second air intake duct and the sprue Wall connection, and from bottom to up, it is the arc-shaped of R that the junction of second air intake duct and the lower wall of the sprue, which is in radius, Transition setting, and 10mm≤R≤80mm.

13. airflow line as described in claim 1, which is characterized in that the flue entrance of second air intake duct and the second master The area of flow channel entry point is suitable；And/or

The sum of area of flue entrance of the area of the flue outlet and first air intake duct and the second air intake duct is quite.

14. airflow line as described in claim 1, which is characterized in that the section of the air intake duct and/or the sprue is in Rectangular, round or ellipse setting.

15. airflow line as described in claim 1, which is characterized in that the airflow line further includes auxiliary flue, described auxiliary Help flue vertically to extension, and the lower end of the auxiliary flue is auxiliary flue entrance, and the auxiliary flue entrance and institute The lower end connection of the first air intake duct is stated, the upper end of the auxiliary flue is auxiliary flue outlet.

16. a kind of micro-wave oven characterized by comprising

Shell, has accommodating chamber, and the shell is equipped with air inlet and air outlet；

Inner casing is set in the accommodating chamber, and the shell and the inner casing limit inner wall chamber；

Such as the described in any item airflow lines of claim 1 to 15, the flue entrance of first air intake duct and the second air intake duct It is connected to the air inlet, the flue outlet corresponds to the air outlet connection, flue gas flow path is collectively formed；And

Blower is set in the flue gas flow path, to by the flue gas of the air inlet along the airflow line to the outlet air Mouth conveying.

17. micro-wave oven as claimed in claim 16, which is characterized in that first air intake duct and the second air intake duct are arranged in institute It states between the two neighboring side wall that shell and the inner casing are in the orientation of left and right.

18. micro-wave oven as claimed in claim 17, which is characterized in that the blower is set to the flue entrance and the air inlet Between mouthful, and the flue entrance is connected by flange apparatus with the outlet air end of the outer cover of the blower；And/or

The rear wall of the shell is arranged in the air outlet, and the flue outlet passes through the rear wall of spiro connecting piece and the shell It is connected, alternatively, the roof of the shell is arranged in the air outlet, the flue outlet passes through the top of spiro connecting piece and the shell Wall connection is connect with the upper air outlet baffle on the inside of the roof for being set to the shell.

19. micro-wave oven as claimed in claim 17, which is characterized in that the airflow line further includes auxiliary flue, described auxiliary Help flue vertically to extension, and the lower end of the auxiliary flue is auxiliary flue entrance, and the auxiliary flue entrance and institute The lower end connection of the first air intake duct is stated, the upper end of the auxiliary flue is auxiliary flue outlet；

Cavity is formed in the front side wall of the shell, and the upper end of the front side wall of the shell offers and is connected to the cavity Auxiliary air-outlet, wherein the auxiliary flue outlet is connected by spiro connecting piece with the front side wall of the shell, with the chamber Body connection.