Vehicle-mounted microwave oven

Abstract

The utility model provides a vehicle-mounted microwave oven which is installed in a vehicle head cabinet of a vehicle, a shell of the vehicle-mounted microwave oven comprises a rear cover plate located on the rear side, a vent hole is formed in the rear cover plate, a fan assembly is arranged in the vent hole, a vehicle head cabinet front side plate is arranged on the front side of the vehicle head cabinet, and an opening is formed in the vehicle head cabinet front side plate. The door assembly is arranged at an opening of a front side plate of the headstock cabinet, the door assembly of the vehicle-mounted microwave oven is arranged at the opening of the front side plate of the headstock cabinet, the door assembly is provided with a first exhaust hole, the front side plate of the headstock cabinet is provided with an air inlet grille, and a first gap is formed between the headstock cabinet and a shell of the vehicle-mounted microwave oven. The air inlet grille, the first gap and the ventilation holes form a first air duct. Air in the external environment enters the headstock cabinet through the air inlet grille, flows along the first gap under the driving of the fan assembly, and then enters the interior of the shell through the vent holes of the rear cover plate to dissipate heat of the vehicle-mounted microwave oven. The hot air after heat dissipation is discharged out of the external environment through the first exhaust hole.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave ovens, in particular to a vehicle-mounted microwave oven. Background Art

[0002] Microwave ovens are very common electrical appliances that do not require open flames or gas to heat food. They are convenient and safe. In addition to being used in home kitchens, they are also suitable for RVs or trucks that need to travel long distances to process food at any time. Usually, there is a headstock on the top of the cockpit of an RV or truck to place a car microwave oven. However, the space in the headstock is limited, and the car microwave oven is installed in a relatively small headstock, which has poor ventilation and heat dissipation performance. If the heat generated by the car microwave oven during operation cannot be discharged in time, it will not only affect the normal use of the car microwave oven, but also affect the service life of the components in the car microwave oven. Utility Model Content

[0003] In view of this, the utility model aims to provide a vehicle-mounted microwave oven to solve the problem of limited heat dissipation capacity of the vehicle-mounted microwave oven in the prior art.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A vehicle-mounted microwave oven is installed in a front cabinet of a vehicle. The housing of the vehicle-mounted microwave oven includes a rear cover plate located at the rear side, the rear cover plate is provided with a ventilation hole, the ventilation hole is provided with a fan assembly, the front side of the front cabinet is a front side plate of the front cabinet, the front side plate of the front cabinet has an opening, the door assembly is arranged at the opening of the front side plate of the front cabinet, the door assembly of the vehicle-mounted microwave oven is arranged at the opening of the front side plate of the front cabinet, the door assembly is provided with a first exhaust hole, the front side plate of the front cabinet is provided with an air intake grille, a first gap is provided between the front cabinet and the housing of the vehicle-mounted microwave oven, and the air intake grille, the first gap and the ventilation hole form a first air duct. Wind from the external environment enters the front cabinet through the air intake grille, flows along the first gap under the drive of the fan assembly, and then enters the housing through the ventilation hole of the rear cover plate to dissipate heat for the vehicle-mounted microwave oven. After heat dissipation, the hot air is discharged from the external environment through the first exhaust hole.

[0006] Furthermore, the door assembly includes a door body and a control panel, a U-shaped frame is arranged inside the housing, the left side of the U-shaped frame is a heating chamber, the right side is an electrical chamber, the fan assembly is arranged at the rear side of the electrical chamber, the control panel is arranged at the front side of the electrical chamber, the control panel is arranged with a first exhaust hole, and the air intake grille and the control panel are respectively located on the left and right sides of the vehicle head cabinet. The air intake grille and the control panel located on the left and right sides of the vehicle head cabinet are at a certain distance to prevent the hot air flowing out of the first exhaust hole after heat exchange from interfering with the entry of air, thereby ensuring the heat dissipation effect.

[0007] Furthermore, the front side of the shell is a front cover plate, the upper side of the front cover plate is provided with a second exhaust hole, the upper side of the heating chamber is provided with a heating chamber top plate, a second gap is provided between the heating chamber top plate and the shell top plate on the upper side of the shell, an air guide groove is provided on the upper side of the door body, the air guide groove is provided correspondingly on the front side of the second exhaust hole, and an exhaust channel is formed between the air guide groove and the second exhaust hole. A part of the air in the first air duct enters the electrical cavity, and the other part enters the second gap, dissipating the heat of the waveguide box and the filter device disposed on the upper side of the heating chamber top plate, and the hot air after the heat dissipation is completed enters the air guide groove through the second exhaust hole and is discharged.

[0008] Furthermore, the door assembly is arranged outside the opening of the front side plate of the vehicle head cabinet, so that the upper side of the air guide groove is not blocked by the vehicle head cabinet, and the air guide groove is connected with the external environment, and the hot air flowing through the air guide groove can be discharged to the external environment.

[0009] Furthermore, the air guide groove is arranged to be inclined forward from bottom to top, which is beneficial to guide the hot air and make the hot air flow upward more and be discharged through the exhaust channel.

[0010] Furthermore, the right side of the U-shaped frame is a partition, the partition is provided with a third exhaust hole, the front side of the top plate of the heating chamber is provided with a fourth exhaust hole, and the third exhaust hole, the heating chamber and the fourth exhaust hole form a second air duct. The air in the first air duct enters the electrical chamber and can also enter the heating chamber through the third exhaust hole. After the heat is dissipated in the heating chamber, the hot air passes through the fourth exhaust hole and the second exhaust hole and is discharged from the air guide groove, completing the heat dissipation of the heating chamber.

[0011] Furthermore, the vehicle-mounted microwave oven includes a filter assembly, the filter assembly includes an air guide cover and a filter located at the front side of the air guide cover, a filter space is formed between the air guide cover and the filter, the filter assembly is arranged at a position near the front side of the top plate of the heating chamber, and the air guide cover is located at the rear side of the fourth exhaust hole, the middle position of the second exhaust hole is the exhaust port, and the filter fits the exhaust port. Air enters the heating chamber through the third exhaust hole, and the hot air after heat dissipation of the heating chamber enters the filter space formed by the air guide cover and the filter through the fourth exhaust hole, and after filtering out debris through the filter, it is discharged to the outside through the exhaust port and the air guide groove.

[0012] Furthermore, the left and right sides of the air guide cover are bent toward the front cover to form a bent plate, and the bent plate abuts against the rear side of the exhaust port, so that there is a certain space between the air guide cover and the front cover. The hot air entering from the fourth exhaust hole can enter this space, and then reach the filter space to be filtered by the filter.

[0013] Furthermore, hanging ears are arranged inside the left and right sides of the exhaust port, and the air guide cover, filter screen and hanging ears are connected by connecting parts to realize the connection and positioning of the filter screen and the air guide cover, and the connection and positioning of the filter screen assembly and the front cover plate.

[0014] Furthermore, the electrical cavity includes a magnetron assembly and a frequency conversion board assembly, and the vehicle-mounted microwave oven also includes a waveguide box and a filter device, wherein the filter device is arranged above the heating cavity, one side of the waveguide box is connected to the magnetron, and the other side extends to the top of the heating cavity. The air entering the top of the heating cavity can dissipate heat for the waveguide box and the filter device.

[0015] Compared with the prior art, the vehicle-mounted microwave oven described in the utility model has the following advantages:

[0016] (1) The vehicle-mounted microwave oven of the utility model can introduce outside air into the electrical cavity to dissipate heat to the electrical cavity and the components inside the electrical cavity, and the air supply capacity of the fan assembly is relatively strong.

[0017] (2) External air can also enter the upper part of the heating chamber to dissipate heat to the upper part of the heating chamber and the components on the upper part of the heating chamber.

[0018] (3) The air entering the electrical chamber can also enter the heating chamber to dissipate heat from the heating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0020] Figure 1 This is a structural schematic diagram of a vehicle-mounted microwave oven according to the utility model;

[0021] Figure 2 This is a schematic structural diagram of the vehicle-mounted microwave oven and vehicle headrest according to the utility model from a first perspective;

[0022] Figure 3 This is a second perspective structural diagram of the vehicle-mounted microwave oven and vehicle headrest of the utility model;

[0023] Figure 4 This is a structural schematic diagram of a vehicle-mounted microwave oven according to the utility model without the upper cover plate and the right cover plate;

[0024] Figure 5 The utility model is a vehicle-mounted microwave oven Figure 4 A schematic diagram of a structure in which the magnetron assembly, the frequency conversion board assembly and the filter assembly are removed;

[0025] Figure 6It is a side view of a fan assembly of a vehicle-mounted microwave oven according to the utility model;

[0026] Figure 7 This is a structural schematic diagram of a magnetron assembly and a frequency conversion board assembly of a vehicle-mounted microwave oven according to the utility model;

[0027] Figure 8 This is a structural schematic diagram of a magnetron bracket of a vehicle-mounted microwave oven according to the utility model;

[0028] Fig. 9 This is a structural schematic diagram of a frequency conversion board assembly of a vehicle-mounted microwave oven according to the utility model;

[0029] Fig.10 This is a schematic diagram of a first air duct of a vehicle-mounted microwave oven according to the utility model;

[0030] Fig.11 It is a schematic diagram of heat dissipation in the upper part of the electrical cavity and the heating cavity of a vehicle-mounted microwave oven described in the utility model;

[0031] Fig.12 It is a schematic diagram of heat dissipation of a heating cavity of a vehicle-mounted microwave oven according to the utility model;

[0032] Fig.13 This is a structural schematic diagram of an air guide cover of a vehicle-mounted microwave oven according to the utility model;

[0033] Fig.14 This is a structural schematic diagram of a filter screen and an oil absorption layer of a vehicle-mounted microwave oven according to the utility model;

[0034] Fig.15 This is a structural schematic diagram of a front cover plate of a vehicle-mounted microwave oven according to the utility model;

[0035] Fig.16 The utility model is a vehicle-mounted microwave oven Figure 5 Schematic cross section of the foundation.

[0036] Description of reference numerals:

[0037] 1. Shell; 11. Shell top plate; 12. Shell bottom plate; 13. Front cover; 131. Second exhaust hole; 1311. Exhaust port; 1312. Hanging ear; 14. Rear cover; 15. Right cover; 2. Door assembly; 21. Door body; 211. Air guide groove; 22. Control panel; 3. Fan assembly; 31. First fan; 32. Second fan; 33. First fan fixing seat; 34. Second fan fixing seat; 35. Protective cover; 4. Magnetron bracket; 41. Laminating plate; 411. Second connecting hole; 42. First connecting ear; 421. First folding edge; 43. First Two connecting ears; 431, second folded edge; 432, third folded edge; 5, frequency conversion board bracket; 51, bracket bottom plate; 52, bracket cover; 53, bracket left side plate; 54, bracket right side plate; 6, filter assembly; 61, filter; 62, air guide cover; 621, bending plate; 622, connecting foot; 63, oil absorption layer; 7, waveguide box; 8, U-shaped frame; 81, partition; 811, third exhaust hole; 82, heating chamber top plate; 821, fourth exhaust hole; 9, car head cabinet; 91, air inlet grille; 92, car head cabinet front side plate; 10, filter device; 101, switch bracket. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. The embodiments described in the present invention are exemplary and intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0039] It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] like Figures 1 to 6As shown, a vehicle-mounted microwave oven is installed in a front cabinet 9 of a vehicle, the rear side of the housing 1 of the vehicle-mounted microwave oven is a rear cover plate 14, the rear cover plate 14 is provided with ventilation holes, and a fan assembly 3 is arranged corresponding to the ventilation holes, and the fan assembly 3 includes at least a first fan 31 and a second fan 32, the first fan 31 is arranged above the second fan 32, and the first fan 31 is located inside the electrical cavity, and the second fan 32 is located outside the electrical cavity. Through this arrangement, the first fan 31 and the second fan 32 are respectively located on the front and rear sides of the rear cover plate 14, that is, only the second fan 32 protrudes on the rear side of the rear cover plate 14. In the case of limited space capacity of the front cabinet 9, the number of fans is increased, and the air supply and heat dissipation capacity of the vehicle-mounted microwave oven are improved. At the same time, for the front cabinet 9, in order to adapt to the car compartment, the upper side of the rear side plate of the front cabinet 9 is inclined, which will cause the upper side of the rear side plate of the front cabinet 9 to be closer to the rear cover plate 14 of the vehicle-mounted microwave oven. The first fan 31 is arranged inside the housing 1 to prevent the first fan 31 from protruding from the rear side of the rear cover 14 and affecting the assembly of the vehicle-mounted microwave oven and the vehicle head cabinet 9. Considering the overall layout and heat dissipation of the vehicle-mounted microwave oven, the fan assembly 3 only has the first fan 31 and the second fan 32 to achieve good heat dissipation.

[0041] The fan assembly 3 also includes a first fan fixing seat 33 and a second fan fixing seat 34, wherein the first fan fixing seat 33 is connected to the front side of the rear cover plate 14, and the second fan fixing seat 34 is connected to the rear side of the rear cover plate 14, wherein the first fan fixing seat 33 is used to install the first fan 31, and the second fan fixing seat 34 is used to install the second fan 32. Accordingly, the first fan fixing seat 31 is located inside the housing 1 to avoid protruding from the rear side of the rear cover plate 14, thereby providing a space for the front cabinet 9 to avoid the problem that the vehicle-mounted microwave oven cannot be installed in the front cabinet 9. Furthermore, the first fan fixing seat 33 is connected to the rear cover plate 14 by a first fastener, and the second fan fixing seat 34 is connected to the rear cover plate 14 by a first fastener. Specifically in the figure of the present application, the first fastener is a screw.

[0042] Furthermore, a protective cover 35 is provided on the side of the first fan fixing seat 33 facing the interior of the shell 1, and a protective cover 35 is provided on the side of the second fan fixing seat 34 facing and away from the interior of the shell 1. The protective cover 35 can not only improve the strength of the first fan fixing seat 33 and the second fan fixing seat 34, but also cooperate with the rear cover plate 14 to provide protection for the fan assembly 3, thereby avoiding squeezing and collision of the fan assembly 3 during installation.

[0043] Furthermore, the first fan fixing seat 33 is arranged to be tilted forward from top to bottom. While ensuring that the occupied volume and air supply capacity of the first fan 31 remain unchanged, the height of the first fan fixing seat 33 in the vertical direction is reduced, which is conducive to saving space and better realizing the assembly of the vehicle-mounted microwave oven and the head cabinet 9.

[0044] The U-shaped frame 8 is arranged inside the shell 1 of the vehicle-mounted microwave oven, and the inside of the shell 1 is divided into a heating chamber and an electrical chamber by the U-shaped frame 8. Considering that the components inside the electrical chamber generate a lot of heat, the fan assembly 3 is arranged at the rear side of the electrical chamber. The first fan 31 and the first fan fixing seat 33 are arranged inside the electrical chamber, and the second fan 32 and the second fan fixing seat 34 are arranged outside the electrical chamber.

[0045] The electrical cavity includes a magnetron assembly and a frequency conversion board assembly, the magnetron assembly includes a magnetron and a magnetron bracket 4, the frequency conversion board assembly includes a frequency conversion board and a frequency conversion board bracket 5, the magnetron bracket 4 is used to stably support and install the magnetron, and the frequency conversion board bracket 5 is used to stably support and install the frequency conversion board. The magnetron and the frequency conversion board are arranged on the front side of the fan assembly 3, and there is no shielding between the magnetron and the fan assembly 3, and there is no shielding between the frequency conversion board and the fan assembly 3. It is convenient for the fan assembly 3 to blow the external wind directly to the magnetron and the frequency conversion board, so as to better realize the heat dissipation of the magnetron and the frequency conversion board and reduce the accumulation of heat in the electrical cavity.

[0046] A switch bracket 101 is disposed at the front side of the electrical cavity. The switch bracket 101 is connected to the front cover plate 13 located at the front side of the housing 1 . The switch bracket 101 is used to connect the stove lamp.

[0047] As one embodiment of the utility model, the vehicle-mounted microwave oven further comprises a waveguide box 7 and a filter device 10, wherein the filter device 10 is arranged above the heating cavity, one side of the waveguide box 7 is connected to the magnetron, and the other side extends to the top of the heating cavity, so as to connect the microwave outlet of the waveguide box 7 with the heating cavity. Through this arrangement, the electrical cavity and the heating cavity space of the vehicle-mounted microwave oven can be reasonably utilized, making the structure more compact, and the filter device 10 is far away from the electrical cavity, so as to reduce the high temperature interference and EMC interference of the electrical cavity to the filter device as much as possible.

[0048] Taking into account the position of the waveguide box 7 and the convenience of connection with the magnetron, the magnetron is arranged above the frequency conversion board, the magnetron is arranged directly in front of the first fan 31, and the frequency conversion board is arranged directly in front of the second fan 32, so that the first fan 31 and the second fan 32 can drive the air flow, so that the air flow directly blows the magnetron and the frequency conversion board for heat dissipation, thereby improving the heat dissipation effect.

[0049] The housing 1 includes a housing top plate 11, a housing bottom plate 12, a front cover plate 13, a rear cover plate 14, a right cover plate 15 and a left cover plate. Figures 7 to 9 As shown, for the magnetron assembly, the right side of the magnetron is connected to the magnetron bracket 4, the right side of the magnetron bracket 4 is connected to the right cover plate 15, and the upper side of the magnetron is connected to the waveguide box 7. The magnetron is heavy, and the upper side and the right side of the magnetron are fixedly supported to prevent the magnetron from shaking or falling off and affecting the normal use of the vehicle-mounted microwave oven.

[0050] Further, the magnetron bracket 4 includes a bonding plate 41, a first connecting ear 42 and a second connecting ear 43, wherein the first connecting ear 42 and the second connecting ear 43 are respectively located at the front and rear sides of the bonding plate 41, the bonding plate 41 is bonded and fixed to the shell of the magnetron, the first connecting ear 42 and the second connecting ear 43 are perpendicular to the bonding plate 41, and extend in a direction away from the magnetron, so that the magnetron bracket 4 forms a U-shaped structure. The first connecting ear 42 and the second connecting ear 43 are both connected and fixed to the right cover plate 15 to achieve the connection and fixation of the magnetron bracket 4 and the magnetron.

[0051] A second connection hole 411 is provided on the bonding plate 41, and the magnetron bracket 4 is connected to the magnetron by screws or other connecting parts passing through the second connection hole 411. Furthermore, the middle part of the bonding plate 41 is provided with a through-hole structure, which is convenient for normal heat dissipation of the magnetron and extension of the parts of the magnetron.

[0052] A first folded edge 421 is provided at the edge of the first connecting ear 42 away from the bonding plate 41, and a second folded edge 431 is provided at the edge of the second connecting ear 43 away from the bonding plate 41. The second folded edge 431 is located near the lower part of the magnetron bracket 4. The first folded edge 421 and the second folded edge 431 are in the same plane. The magnetron bracket 4 is connected and fixed to the right cover plate 15 through the first folded edge 421 and the second folded edge 431. Preferably, the first folded edge 421 and the second folded edge 431 are connected and fixed to the right cover plate 15 by screws or connectors. More preferably, a reinforcing rib is provided on the right cover plate 15 to prevent the right cover plate 15 from being deformed by force.

[0053] In this embodiment, the edge of the second connecting ear 43 away from the bonding plate 41 is further provided with a third folded edge 432, the vertical distance between the third folded edge 432 and the bonding plate 41 is less than the vertical distance between the second folded edge 431 and the bonding plate 41, and the second folded edge 431 is parallel to the third folded edge 432, so that the second folded edge 431 has a certain distance from the right cover plate 15, which is convenient for installing a grounding plate on the second folded edge 431, and provides installation space for the grounding plate. Grounding the magnetron can prevent the leakage of high-voltage current generated by the magnetron in the studio, which affects the safety of the magnetron.

[0054] For the frequency conversion board assembly, the frequency conversion board bracket 5 includes a bracket bottom plate 51, a bracket cover 52, a bracket left side plate 53 and a bracket right side plate 54. The bracket cover 52 is arranged on the upper side of the frequency conversion board bracket 5. The left and right sides of the bracket bottom plate 51 are the bracket left side plate 53 and the bracket right side plate 54 respectively. The frequency conversion board is arranged in the space formed by the bracket bottom plate 51, the bracket cover 52, the bracket left side plate 53 and the bracket right side plate 54. The bracket bottom plate 51 is connected to the housing bottom plate 12 to fix the frequency conversion board assembly to the inside of the electrical cavity. The frequency conversion board has the advantages of light weight and small space occupation. By arranging the bracket cover 52 on the upper side of the frequency conversion board, the heat generated by the magnetron is prevented from affecting the frequency conversion board. Since the front and rear sides of the frequency conversion board bracket 5 are not blocked, it is convenient for the heat dissipation airflow to circulate inside the frequency conversion board bracket 5 to achieve heat dissipation of the frequency conversion board.

[0055] like Figures 10-12 As shown, the housing 1 of the vehicle-mounted microwave oven includes a rear cover plate 14 located at the rear side, the rear cover plate 14 is provided with a ventilation hole, the ventilation hole is provided with a fan assembly 3, the front side of the vehicle head cabinet 9 is a vehicle head cabinet front side plate 92, the vehicle head cabinet front side plate 92 has an opening, the door assembly 2 of the vehicle-mounted microwave oven is arranged at the opening of the vehicle head cabinet front side plate 92, the door assembly 2 is provided with a first exhaust hole, and the vehicle head cabinet front side plate is provided with an air intake grille 91. Since there is a certain first gap between the vehicle head cabinet 9 and the housing 1 of the vehicle-mounted microwave oven, the air intake grille 91, the first gap and the ventilation hole form a first air duct. The wind from the external environment enters the vehicle head cabinet 9 through the air intake grille 91, flows along the first gap under the drive of the fan assembly 3, and then enters the interior of the housing 1 through the ventilation hole of the rear cover plate 14 to dissipate heat for the vehicle-mounted microwave oven. After the heat dissipation is completed, the hot air is discharged from the external environment through the first exhaust hole. The air inlet grille 91, i.e., the air inlet position, and the first exhaust hole, i.e., the air outlet position, are respectively arranged on different structures to prevent the outflowing hot air from interfering with the incoming air and affecting the heat dissipation effect.

[0056] As an example of the present invention, the air inlet grille 91 has two layers, and the projections of the two layers of air inlet grilles 91 on the vertical plane partially overlap. This setting can provide a certain shielding between the two layers of air inlet grilles 91, preventing the user from seeing the inside of the front cabinet 9 through the air inlet grilles 91, especially when the user is looking up; at the same time, it will not affect the air intake, and the heat dissipation effect is good.

[0057] Furthermore, the door assembly 2 of the vehicle-mounted microwave oven includes a door body 21 and a control panel 22. A U-shaped frame 8 is arranged inside the housing 1. The left side of the U-shaped frame 8 is a heating cavity, and the right side is an electrical cavity. The fan assembly 3 is arranged at the rear side of the electrical cavity, and the control panel 22 is arranged at the front side of the electrical cavity. The door body 21 is used to open or close the heating cavity. The control panel 22 is provided with a first exhaust hole air inlet grille 91 and the control panel 22 is located on the left and right sides of the vehicle head cabinet 9. The wind from the external environment enters the vehicle head cabinet 9 through the air inlet grille 91, flows along the first gap under the drive of the fan assembly 3, and then enters the electrical cavity through the ventilation hole of the rear cover plate 14 to dissipate heat for the electrical cavity and the components in the electrical cavity. After the heat dissipation is completed, the hot air is discharged to the external environment through the first exhaust hole. The air inlet grille 91 and the control panel 22 located on the left and right sides of the vehicle head cabinet 9 are at a certain distance to prevent the hot air flowing out of the first exhaust hole after heat exchange from interfering with the entry of air, thereby ensuring the heat dissipation effect. Specifically, based on the setting position of the fan assembly 3, the first gap specifically refers to the gap between the left side plate of the headstock and the left cover plate of the shell 1, and the gap between the rear side plate of the headstock and the rear cover plate 14 of the shell 1. Specifically, the first exhaust hole is arranged on the right side and / or the lower side of the control panel 22. The first exhaust hole is arranged on the right side of the control panel 22 to keep the hot air away from the heating chamber after the heat dissipation is completed. The first exhaust hole is arranged on the lower side of the control panel to keep the hot air away from the waveguide box 7 and the filter device 10 after the heat dissipation is completed to avoid affecting the normal operation of other components.

[0058] Furthermore, the front side of the shell 1 is a front cover plate 13, and the upper side of the front cover plate 13 is provided with a second exhaust hole 131, and the upper side of the heating chamber is provided with a heating chamber top plate 82, and a second gap is provided between the heating chamber top plate 82 and the shell top plate 11 on the upper side of the shell 1, and an air guide groove 211 is provided on the upper side of the door body 21, and the air guide groove 211 is correspondingly provided on the front side of the second exhaust hole 131, and an exhaust channel is formed between the air guide groove 211 and the second exhaust hole 131. A part of the air in the first air duct enters the electrical cavity, and the other part enters the second gap, and the waveguide box 7 and the filter device 10 provided on the upper side of the heating chamber top plate 82 are cooled. After the heat dissipation is completed, this part of the hot air enters the air guide groove 211 through the second exhaust hole 131 and is discharged.

[0059] like Figures 4-5 As shown, the left and right sides of the heating chamber top plate 82 are respectively provided with filter devices 10, and the front sides of the filter devices 10 on the left and right sides are respectively provided with second exhaust holes 131. Through this arrangement, the channel for hot air exhaust is increased, the flow distance of hot air is reduced, and the heat dissipation effect is improved.

[0060] In order to better discharge this part of hot air to the outside in time, the door assembly 2 is arranged to protrude from the outside of the opening of the front side plate 92 of the headstock, so that the upper side of the air guide groove 211 is not blocked by the headstock 9, and the air guide groove 211 is connected to the outside environment. The hot air flowing through the air guide groove 211 can be discharged to the outside environment. Furthermore, the air guide groove 211 is arranged to be inclined forward from bottom to top, that is, the distance between the air guide groove 211 and the front cover plate 13 gradually increases from bottom to top, which is conducive to guiding the hot air, so that the hot air flows more upward and is discharged through the exhaust channel.

[0061] Since the heating cavity will also generate heat when the car-mounted microwave oven heats food, the heat dissipation of the heating cavity also needs to be considered. The right side of the U-shaped frame 8 is a partition 81, the left side of the partition 81 is the heating cavity, and the right side of the partition 81 is the electrical cavity. The partition 81 is provided with a third exhaust hole 811, and the front side of the heating cavity top plate 82 is provided with a fourth exhaust hole 821. The third exhaust hole 811, the heating cavity and the fourth exhaust hole 821 form a second air duct. The air in the first air duct enters the electrical cavity, and can also enter the heating cavity through the third exhaust hole 811. After the hot air in the heating cavity is dissipated, it passes through the fourth exhaust hole 821 and the second exhaust hole 131, and is discharged from the air guide groove 211 to complete the heat dissipation of the heating cavity.

[0062] like Figures 13-16 As shown, considering that heating food in the heating cavity will produce oil droplets or other debris, the vehicle-mounted microwave oven includes a filter assembly 6, the filter assembly 6 includes an air guide cover 62 and a filter 61 located at the front side of the air guide cover 62, and a filtering space is formed between the air guide cover 62 and the filter 61. The filter assembly 6 is arranged at a position close to the front side of the top plate 82 of the heating cavity, and the air guide cover 62 is located at the rear side of the fourth exhaust hole 821. The middle position of the second exhaust hole 131 is the exhaust port 1311, and the filter 61 is attached to the exhaust port 1311. Air enters the heating cavity through the third exhaust hole 811, and the hot air after heat dissipation of the heating cavity enters the filtering space formed by the air guide cover 62 and the filter 61 through the fourth exhaust hole 821. After the debris is filtered out by the filter 61, it is discharged to the outside through the exhaust port 1311 and the air guide groove 211. Specifically, the filter 61 is provided with flanges around, and the flanges are convex and extended backward, so that the rear side of the filter 61 and the air guide cover 62 form a filtering space.

[0063] The air guide cover 62 is arranged at the rear side of the fourth exhaust hole 821, and the waveguide box 7 and the filter device 10 are separated from the fourth exhaust hole 821 by the air guide cover 62, so as to prevent the hot air flowing out of the heating chamber from entering the waveguide box 7 and the filter device 10 through the fourth exhaust hole 821, thereby causing adverse effects on the waveguide box 7 and the filter device 10. The filter screen 61 is attached to the exhaust port 1311, so that the hot air flowing out of the heating chamber must be filtered by the filter screen assembly 6 after passing through the fourth exhaust hole 821 before being discharged from the exhaust port 1311.

[0064] Furthermore, the left and right sides of the air guide cover 62 are respectively bent toward the direction of the front cover plate 13 to form a bent plate 621, and the bent plate 621 abuts against the rear side of the exhaust port 1311, so that there is a certain space between the air guide cover 62 and the front cover plate 13, and the hot air entering from the fourth exhaust hole 821 can enter this space, and then reach the filter space, and be filtered by the filter screen 61. The bent plate 621 is bent in a direction away from the filter screen 61 to form a connecting foot 622, and the connecting foot 622 is connected to the heating chamber top plate 82, so that the filter screen assembly 6 is positioned and connected to the heating chamber top plate 82. The bent plate 621 and the connecting foot 622 are conducive to improving the strength of the filter screen assembly 6.

[0065] Furthermore, the inside of the left and right sides of the exhaust port 1311 are provided with hanging ears 1312, and the air guide cover 62, the filter screen 61 and the hanging ears 1312 are connected by a connector to realize the connection and positioning of the filter screen 61 and the air guide cover 62, and the connection and positioning of the filter screen assembly 6 and the front cover 13. The filter screen assembly 6 is stably connected to the vehicle-mounted microwave oven through the connecting foot 622 and the connector.

[0066] Furthermore, an oil absorption layer 63 is provided between the air guide cover 62 and the filter 61. The oil absorption layer 63 is made of an oil-absorbing and breathable material, which can effectively filter the oil gas in the hot air discharged from the heating chamber, prevent a large amount of oil droplets from adhering to the filter 61, and prevent oil droplets from entering the cockpit.

[0067] Furthermore, the ratio of the air inlet and air outlet area of ​​the first air duct is 1.5-3:1, the ratio of the air inlet and air outlet area of ​​the second air duct is 1.1-1.5:1, and the ratio of the air outlet area of ​​the second air duct to the air inlet area of ​​the first air duct is 1.5-3:1. This setting maintains positive pressure in both the electrical cavity and the heating cavity, ensuring that air flows through the first air duct and the second air duct at the same time, and the overall heat dissipation effect of the vehicle-mounted microwave oven is good, while preventing oil stains and odors from being directly discharged into the cockpit.

[0068] As an example of the present invention, the ratio of the air inlet and air outlet areas of the first air duct is 1.7-2.4:1, the ratio of the air inlet and air outlet areas of the second air duct is 1.2-1.4:1, and the ratio of the air outlet area of ​​the first air duct to the air inlet area of ​​the second air duct is 2.2-2.5:1. Preferably, the air inlet area and air outlet area of ​​the first air duct are 6004.5mm 2 、3164.7mm 2 The inlet and outlet areas of the second air duct are 1310 mm 2 、972.4mm 2 .

[0069] The vehicle-mounted microwave oven of the present invention can introduce outside air into the electrical cavity to dissipate heat to the electrical cavity and the components inside the electrical cavity. The outside air can also enter the upper part of the heating cavity to dissipate heat to the upper part of the heating cavity and the components inside the heating cavity. In addition, the air entering the electrical cavity can also enter the heating cavity to dissipate heat to the heating cavity, thereby ensuring that the vehicle-mounted microwave oven can fully dissipate heat inside the vehicle head cabinet 9 with limited space.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle-mounted microwave oven, installed in a front cabinet (9) of a vehicle, characterized in that: The housing (1) of the vehicle-mounted microwave oven comprises a rear cover plate (14) located at the rear side, the rear cover plate (14) is provided with a ventilation hole, the ventilation hole is provided with a fan assembly (3), the front side of the vehicle front cabinet (9) is a vehicle front cabinet front side plate (92), the vehicle front cabinet front side plate (92) has an opening, the door assembly (2) of the vehicle-mounted microwave oven is arranged at the opening of the vehicle front cabinet front side plate (92), the door assembly (2) is provided with a first exhaust hole, the vehicle front cabinet front side plate (92) is provided with an air intake grille (91), a first gap is provided between the vehicle front cabinet (9) and the housing (1) of the vehicle-mounted microwave oven, and the air intake grille (91), the first gap and the ventilation hole form a first air duct.

2. The vehicle-mounted microwave oven according to claim 1, characterized in that: The door assembly (2) comprises a door body (21) and a control panel (22); a U-shaped frame (8) is arranged inside the housing (1); the left side of the U-shaped frame (8) is a heating chamber, and the right side of the U-shaped frame (8) is an electrical chamber; the fan assembly (3) is arranged at the rear side of the electrical chamber; the control panel (22) is arranged at the front side of the electrical chamber; a first exhaust hole is arranged on the control panel (22); and the air intake grille (91) and the control panel (22) are located on the left and right sides of the vehicle head cabinet (9).

3. The vehicle-mounted microwave oven according to claim 2, characterized in that: The front side of the shell (1) is a front cover plate (13), a second exhaust hole (131) is arranged on the upper side of the front cover plate (13), a heating chamber top plate (82) is arranged on the upper side of the heating chamber, a second gap is provided between the heating chamber top plate (82) and the outer shell top plate (11) on the upper side of the shell (1), an air guide groove (211) is provided on the upper side of the door body (21), the air guide groove (211) is arranged correspondingly on the front side of the second exhaust hole (131), and an exhaust channel is formed between the air guide groove (211) and the second exhaust hole (131).

4. The vehicle-mounted microwave oven according to claim 1, characterized in that: The door assembly (2) is arranged to protrude from the outside of the opening of the front side plate (92) of the vehicle headrest.

5. The vehicle-mounted microwave oven according to claim 3, characterized in that: The air guide groove (211) is arranged tilted forward in a direction from bottom to top.

6. The vehicle-mounted microwave oven according to claim 3, characterized in that: The right side of the U-shaped frame (8) is a partition (81), the partition (81) is provided with a third exhaust hole (811), the front side of the heating chamber top plate (82) is provided with a fourth exhaust hole (821), and the third exhaust hole (811), the heating chamber and the fourth exhaust hole (821) form a second air duct.

7. The vehicle-mounted microwave oven according to claim 6, characterized in that: The vehicle-mounted microwave oven comprises a filter assembly (6), the filter assembly (6) comprising an air guide cover (62) and a filter (61) located at the front side of the air guide cover (62), a filtering space is formed between the air guide cover (62) and the filter (61), the filter assembly (6) is arranged at a position close to the front side of a top plate (82) of a heating chamber, the air guide cover (62) is located at the rear side of a fourth exhaust hole (821), the middle position of the second exhaust hole (131) is an exhaust port (1311), and the filter (61) is in contact with the exhaust port (1311).

8. The vehicle-mounted microwave oven according to claim 7, characterized in that: The left and right sides of the air guide cover (62) are respectively bent towards the direction of the front cover plate (13) to form a bent plate (621), and the bent plate (621) abuts against the rear side of the exhaust port (1311), so that there is a space between the air guide cover (62) and the front cover plate (13).

9. The vehicle-mounted microwave oven according to claim 7, characterized in that: Hanging ears (1312) are arranged inside the left and right sides of the exhaust port (1311), and the air guide cover (62), the filter screen (61) and the hanging ears (1312) are connected via a connecting piece.

10. The vehicle-mounted microwave oven according to claim 2, characterized in that: The electrical cavity comprises a magnetron assembly and a frequency conversion board assembly, and the vehicle-mounted microwave oven further comprises a waveguide box (7) and a filter device (10), wherein the filter device (10) is arranged above the heating cavity, and one side of the waveguide box (7) is connected to the magnetron, and the other side extends to the top of the heating cavity.

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