CN1194356A - Fan motor box of microwave oven - Google Patents

Abstract

The invention discloses a microwave oven, which is provided with an electrical element compartment, a fan which is mounted in the electrical element compartment to absorb the outside air into the electrical element compartment for the cooling of the electrical element, and a motor for the driving of the fan. The microwave oven also comprises a fan motor box body which is fixed on a back wall of the microwave oven for the accommodation of the fan motor; the an motor box body is formed into a rectangular shape by an upper panel, a lower panel, a left panel and a right panel; the panels are mounted on the back wall without any spaces. The fan motor box body is separated from the outside without touching various foreign matters during the repair of the electrical element in the electrical element compartment, so that the damage of the fan motor can be avoided.

Description

The fan motor box of micro-wave oven

The present invention relates to a kind of micro-wave oven, more specifically say, relate to a kind of fan for microwave oven motor casing that is used to put a fan motor.

Micro-wave oven is a kind of utensil of cooking, and can come cook food by the frictional resistance heat that is generated by high-frequency energy, and this energy can make the food molecule with high-speed motion, thereby produces heat.

Fig. 1 is the decomposition diagram of micro-wave oven commonly used.

As shown in Figure 1, micro-wave oven commonly used comprises and has the interior case 12 of cooking chamber 20, and the outer container 11 that constitutes the micro-wave oven outward appearance.Fire door 30 is hinged a side in micro-wave oven the place ahead so that chamber 20 is cooked in opening and closing, and control panel 31 is arranged on the opposite side in micro-wave oven the place ahead so that select to cook classification and cooking time.

Electric elements compartment 40 by sidewall with cook chamber 20 and separate, and comprise can be cook chamber 20 generate high-frequency energies magnetron 41, to magnetron 41 apply high pressure high-tension transformer 42, be used to cool off various electric elements and the fan 43 of extraneous air inspiration electric elements compartment 40, and handle is sent to the conduit 44 of cooking chamber 20 by the air-flow of electric fan 43 inspiration electric elements compartments 40.

Fig. 2 is the perspective view of fan motor box commonly used.

As drawn among Fig. 2, fan motor box 50 comprises the fan motor guard shield 51 that fan motor 45 wherein is housed, and puts in electrical equipment compartment 40 and put the cylindrical shape fan shroud 52 of fan 43.Fan motor guard shield 51 is foursquare, by upper and lower panel 54 and 55 and a left side and right panel 56 and 57 make.Left panel 56 is part excisions.

Fan motor guard shield 51 has inner trellis supporting member 53, in order to supports fans 43 and fan motor 45.The circuit board (not shown) is contained on the top panel 54 of fan motor box 50, and on circuit board, make in order to eliminate in the power supply with the choking-winding of clutter, put on the fuse of each electric elements and other in order to prevent excess voltage.Circuit board provides electric current through over commutation to electric elements compartment 40.

The electric current that is used for fan motor 45 flow to fan motor 45 via lead 46, and terminal box 147 is arranged on the end of lead 46.This terminal box 147 is connected in the input terminal 48 that is located at fan motor 45.Slotted eye 58 machineds are formed on the left panel 56 of fan motor box 50, so that lead 46 can be placed in fan motor box 50 the insides.The inner surface of the rear wall 13 of case 12 in fan motor box 50 is fixed in, the rear portion of this electric elements compartment 40 is isolated from the outside and comes.Many latch fittings 59 are produced on fan motor box 50 places, inject each the eyelet 13b that is formed in rear wall 13 places respectively, and fan motor box 50 are fastened at rear board 13 by each screw 14.When fan motor box 13 is fixed in rear wall 13 together with fan 43 and fan motor 45, extraneous air relies on the rotation of fan 43, the pore 13a of case 12 rear walls 13 was sucked into electric elements compartment 40 in the many machineds of process were formed in, thereby each electrical equipment of heat is dispersed in cooling.

A kind of like this fan motor box commonly used is the part excision in the drawings, and when maintain electrical devices element compartment was inner, mechanic's hand or instrument may contact fan motor, thereby cause damaging fan motor.In order to prevent this infringement, the mechanic should separate fan motor box before repairing pretty troublesomely and after repairing its attaching be got on from interior case rear wall.

The purpose of this invention is to provide a kind of fan motor box that is used for micro-wave oven, can avoid some defect and the shortcoming of common technology.

The objective of the invention is, a kind of fan motor box that is used for micro-wave oven is provided, fan motor is unlikely to sustain damage to protect to have improved structure.

In order to reach above-mentioned purpose of the present invention, a kind of micro-wave oven is provided, have an electric elements compartment; One fan, be contained among the electric elements compartment with extraneous air inspiration electric elements compartment so that cool off each electric elements; And the fan motor of a drive fan, this stove comprises a fan motor box, is fixed in the rear wall of micro-wave oven, is used to put fan motor and is made for rectangular shape by upper and lower a, left side and right panel.Each panel is secured to rear wall and does not have any gap.

Fig. 1 is a kind of decomposition diagram of conventional microwave oven;

Fig. 2 is a kind of perspective view of conventional fan motor casing;

Fig. 3 is the decomposition diagram of micro-wave oven of the present invention;

Fig. 4 is the perspective view of fan for microwave oven motor casing of the present invention.

A preferred embodiment of the present invention is at length illustrated with reference to appended each figure.

Fig. 1 is the decomposition diagram of micro-wave oven of the present invention.

As drawn among Fig. 3, micro-wave oven is formed by having the interior case 112 and the outer container 111 of cooking chamber 120.Fire door 130 is hinged on a side in micro-wave oven the place ahead so that chamber 120 is cooked in opening and closing, and control panel 131 is arranged on the opposite side in micro-wave oven the place ahead so that select to cook classification and cooking time.

Electric elements compartment 140 by sidewall with cook chamber 120 and separate, and comprise can be cook chamber 120 generate high-frequency energies magnetron 141, to magnetron 141 apply high pressure high-tension transformer 142, be used to cool off the fan 143 of various electric elements, and guiding the conduit 144 of cooking chamber 120 into by the air-flow of fan 143 inspiration electric elements compartments 140.That is extraneous air is because the effect of fan 143 is sucked into electrical equipment compartment 140, thereby cools off the electric elements of some heatings, and the air of heat exchange is introduced into by conduit 144 and cooks chamber 120, thereby removes moisture and the smell that produces during cooking.Fig. 4 is the perspective view of fan for microwave oven motor casing 150 of the present invention.

As shown in Figure 4, fan motor box 150 comprises the motor shroud 151 that fan motor 145 wherein is housed, and puts in electric elements compartment 140 and put the cylindrical shape fan shroud 152 of fan 143.Fan motor guard shield 151 is rectangles, by upper and lower panel 154 and 155 and a left side and right panel 156 and 157 form.Left panel 156 is part excisions.

Fan motor guard shield 151 has an inner trellis supporting member 153, in order to supports fans 143 and fan motor 145.One circuit board (not shown) is contained on the top panel 154 of fan motor box 150, and on circuit board, make in order to remove in the power supply with the choking-winding of clutter (noise), put on the fuse of each electric elements and other in order to prevent excess voltage.Circuit board each electric elements among electric elements compartment 140 provide the electric current through over commutation.

The electric current that is used for fan motor 145 flow to fan motor 145 via lead 146, and terminal box 147 is arranged on the end of lead 146.This terminal box 147 is connected in the input terminal 148 that is located at fan motor 145.One slotted eye 158 is formed on the left panel 156 of fan motor box 150, so that lead 146 can be placed in fan motor box 150 the insides.

Rear wall 113 inner surfaces of case 112 in fan motor box 150 is fixed in, this rear wall is isolated from the outside the rear portion of electric elements compartment 140 and comes.The fan motor that constitutes fan motor box 150 protects single 151 upper and lower a, left side and right panel 154,155,156 and 157 and is close to rear wall 113 and does not have any gap.Fan motor 145 is centered on by upper and lower a, left side and right panel 154,155,156 and 157, thereby comes with the outside of fan motor box 150 is isolated.

Following explanation is addressed fan motor box 150 is fixed in method on the rear wall 113.

Many latch fittings 159 are produced on the upper and lower panel 154 and 155 of fan motor box 150 separately, inject at first that machine adds out on rear wall 113 corresponding to each latch fitting 159 each eyelet 113b.Many screws 114 inject each screw hole that is formed on fan motor box 150 and the rear wall 113, thereby fan motor box 150 is fastened at rear wall 113.

In having the micro-wave oven of above structure, one supplies with micro-wave oven when electric power, and magnetron 141 will produce high-frequency energy that guiding cooks chamber 120 and cook beginning.Along with the starting of fan motor 145, fan 143 rotates, and extraneous air relies on the rotation of fan 143 to be sucked into electric elements compartment 140 through many pore 113a, thus the cooling electric elements.Constantly introduced through the air of heat exchange and to be cooked chamber 120, then be discharged into the external world again, thereby removed moisture and the smell that is produced during cooking.

As mentioned above, fan for microwave oven motor cabinet design of the present invention gets to be hedged off from the outer world when each electric elements among the maintain electrical devices element compartment and comes and fan motor and various foreign matter isolating are left, thereby can prevent to damage fan motor.Therefore, there is no need before repairing, fan motor box to be separated from rear wall and after repairing, again it is secured to rear wall.

Claims (1)

1. a micro-wave oven has an electric elements compartment, and one is contained among the electric elements compartment in order to extraneous air inspiration electric elements compartment and cool off the fan of each electric elements, and a motor that drives this fan, and described micro-wave oven comprises:

One is fixed in the fan motor box on micro-wave oven one rear wall, is used to put fan motor and constitutes a rectangular shape by upper and lower a, left side and right panel, and described each panel is secured to rear wall and does not have any gap.

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