Patent Publication Number: US-2010116805-A1

Title: Oven

Description:
TECHNOLOGY FIELD 
     The present invention relates to one of kitchen appliances, especially to the oven which can produce vapor in the oven and the vapor can be sprayed on the surface of food uniformly. 
     BACKGROUND OF THE INVENTION 
     The oven is a one of kitchen appliances, the shape of the existing oven is usually box-shaped, and a grill chamber is set inside the oven, the grill chamber is used for baking foods, for example, the bread and so on, can also be used to barbecue foods, for example, the meat and so on, can also be used to thaw food, for example, quickly thawing the food frozen in the refrigerator, in order to achieve better conditioning effect to food, the requirement for humidifying food is needed during the conditioning process. The existing humidification method is usually used steam humidifier, for producing steam, the water in the pipes or the tank should be heated, this leads to the structure of humidification system is complicated, and the cost is increased and affect the competitiveness of the product. 
     SUMMARY OF THE INVENTION 
     The purpose of the present invention is to overcome the inadequacy of existing technologies, to provide an oven with a spray device, allowing the oven can produce vapor in the oven and the vapor can be sprayed on the surface of food uniformly, and humidify the food, and has simple structure and low cost characteristics. 
     The present invention adopts the following technical solution: an oven, comprising: a main body provided with a bottom cover, an outer cover, an upper reflector plate; a heating chamber used for heating food disposed inside the main body; a spray device disposed on said main body, for spraying the vapor into said heating chamber. 
     Said spray device comprising: 
     a water tank provided with a water inlet and a water outlet; 
     a piston provided with a cavity and a piston rod movable within the cavity, wherein said cavity comprising a pistion inlet connected to said water outlet and a pistion outlet discharging the water out of said cavity by the compression of said piston rod; 
     an electromagnetic valve comprising a push rod corresponding to said piston rod for pushing the piston rod to achieve compression movement; 
     a spray unit provided with an atomizer installed on the wall of the heating chamber, and connected with said piston outlet. 
     a one-way valve is mounted on the piston inlet. 
     a one-way valve is mounted on the piston outlet. 
     a spring mounted between said piston rod and the front wall of said cavity using for the reset of the compressed piston rod. 
     Said water tank is fixed inside of the outer cover of the main body. 
     Said electromagnetic valve, piston are fixed on the bottom cover of the main body. 
     Said spray unit is fixed on the upper reflector plate of the main body. 
     Said spray unit provided with a one-way valve inside, the outlet of the one-way valve is connected with the atomizer. 
     The beneficial effect of the present invention: because a spray device used for spraying the vapor into the heating chamber is set on the main body, and the spray device comprising: a water tank, a piston, a electromagnetic valve, a spray unit, by controlling of the electromagnetic valve, the spray device can automatically humidify the food, and has simple structure and low cost characteristics. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will be further explained with the drawings and the embodiments. 
         FIG. 1  is a structure view of present invention; 
         FIG. 2  is an amplificatory view of the A portion of the  FIG. 1 ; 
         FIG. 3  is an amplificatory view of the B portion of the  FIG. 1 . 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to the figs, the oven based on the present invention, comprising: a main body  10  provided with a bottom cover  11 , an outer cover, an upper reflector plate  12 ; a right inner plate  13 , a rear reflector plate  14 ; a heating chamber  15  used for heating food disposed inside the main body; a spray device disposed on said main body, for spraying the vapor into said heating chamber. 
     Said spray device comprising: 
     a water tank  21  provided with a water inlet and a water outlet, water can be introduced into the water tank  21  via the water inlet; 
     a piston  22  provided with a cavity  221  and a piston rod  222  movable within the cavity, wherein said cavity  221  comprising a pistion inlet connected to said water outlet by a tube  231  and a piston outlet discharging the water out of said cavity  221  by the compression of said piston rod  222 ; 
     an electromagnetic valve  24  comprising a push rod  241  corresponding to said piston rod  222  for pushing the piston rod  222  to achieve compression movement; 
     a spray unit  25  provided with an atomizer  251 , which can change water into vapor, installed on the wall of said heating chamber, and connected with said piston outlet by a tube  232 ; The present embodiment adopts two spray units. 
     a one-way valve  261  is mounted on the piston inlet; 
     A one-way valve  262  is mounted on the piston outlet; 
     A spring  223  mounted between said piston rod  222  and the front wall of said cavity  221  using for the reset of the compressed piston rod  222 ; 
     Said water tank  21  is fixed inside of the outer cover of the main body; 
     Said electromagnetic valve  24 , piston  22  are fixed on the bottom cover  11  of the main body; 
     Said spray unit  25  is fixed on the upper reflector plate  12  of the main body. 
     Said spray unit  25  provided with a one-way valve  263  inside, the outlet of the one-way valve  263  is connected with the atomizer  251 . 
     The oven based on the present invention, a water tank  21  is positioned on the oven, the oven is equipped with a piston  22  and a electromagnetic valve  24 , when the electromagnetic valve  24  is electrified, the electromagnetic valve  24  is active, the push rod  241  of the electromagnetic valve pushes the piston rod  222  to achieve compression movement within the cavity  221 , when the piston rod  222  moves forwardly and pushes the water in the cavity  221  to the outlet of the cavity  221 , the water pushed from the cavity  221  pushes the water positioned in the tube  262  connected between the spray unit  25  and the piston  22  out of the spray unit  25 , the water out of the spray unit  25  goes through the atomizer  251 , is changed into vapor, the vapor can be sprayed on the surface of food uniformly, achieve the humidification conditioning to food. When the electromagnetic valve  24  is power off, the push rod  241  of the electromagnetic valve does not push the piston rod  222 , and the piston rod  222  resets under the force of the spring  223 , the negative pressure in the cavity attracts the water in the water tank  21 , the power on/off of the electromagnetic valve  24  is to control humidification conditioning to food in the heating chamber  15 . 
     As mentioned above, the described embodiments are to be considered in all respects only as illustrative and no restrictive. All changes which come within the meaning and range of equivalency of the claims are to be embraced with their scope.