Freezing furniture and an insert therefor

Abstract

In a first aspect, the invention relates to a piece of freezing furniture comprising a storage space ( 3 ), intended for products to be frozen, and a primary air duct ( 4 ), which partly surrounds a suction duct ( 11 ), having an inlet ( 12 ) that mouths at one side of the opening ( 13 ) of the storage space ( 3 ), as well as a rising duct ( 14 ), having an outlet ( 15 ) that mouths at the opposite side of said opening ( 13 ), and a temperature-change unit ( 36 ), which is located in the primary air duct ( 4 ) and separates the suction duct ( 11 ) from the rising duct ( 14 ) and includes a fan ( 16 ), a heating element ( 17 ) and a cooling element ( 18 ), wherein, in normal operation, cooled air flows from the temperature-change unit ( 36 ) via the rising duct ( 14 ), over and past said opening ( 13 ), through the suction duct ( 11 ) and back to the temperature-change unit ( 36 ). In a second aspect, the invention also relates to an insert for such a piece of freezing furniture.

1 . Piece of freezing furniture comprising: 
 a storage space ( 3 ), intended for products to be frozen, and    a primary air duct ( 4 ), which partly surrounds said storage space ( 3 ) and which comprises    a suction duct ( 11 ), having an inlet ( 12 ) that mouths at one side of an access opening ( 1   3 ) of the storage space ( 3 ), as well as    a rising duct ( 14 ), having an outlet ( 15 ) that mouths at an opposite side of said opening ( 13 ), and    a temperature-change unit ( 36 ), which is located in the primary air duct ( 4 ) and separates the suction duct ( 11 ) from the rising duct ( 14 ) and includes a fan ( 16 ), a heating element ( 17 ) and a cooling element ( 18 ),    said temperature-change unit comprising an insert placed in the primary air duct ( 4 ), which insert comprises    a secondary air duct ( 20 ) having, on one hand, an inlet opening ( 21 ), which mouths in the primary air duct ( 4 ) downstream of the temperature-change unit ( 36 ) and is possible to open and close by a damper ( 19 ), and on the other hand an outlet opening ( 22 ) that mouths in the primary air duct ( 4 ) upstream of the temperature-change unit,    wherein the damper ( 19 ) is movable between a first position, in which the inlet opening ( 21 ) of the secondary air duct ( 20 ) is kept closed and the rising duct ( 14 ) if the primary air duct ( 4 ) is kept open, and a second position in which the inlet opening ( 21 ) is kept open and the rising duct ( 14 ) is kept closed.    
   
   
       2 . Piece of freezing furniture according to  claim 1 , wherein the damper ( 19 ) is movable by being turnable around a joint ( 25 ).  
   
   
       3 . Piece of freezing furniture according to  claim 2 , wherein the damper ( 19 ) is included in a damper device, which also comprises a fastening plate ( 29 ) and a strip ( 28 ) extending between the damper ( 19 ) and the fastening plate ( 29 ), which strip is made of a flexible material and forms said joint ( 25 ).  
   
   
       4 . Piece of freezing furniture according to  claim 1 , wherein the damper ( 19 ) is actuated by spring ( 31 ), which always aims to hold the same in said first position.  
   
   
       5 . Piece of freezing furniture according to  claim 1 , wherein at the damper ( 19 ) a flexible bladder ( 32 ) is arranged, which is possible to fill with a pressurized fluid from a fluid source connected to the same, to, when need arises, bring the damper ( 19 ) to said second position.  
   
   
       6 . Piece of freezing furniture according to  claim 1 , wherein the damper ( 19 ) is arranged to co-operate with a wall ( 38 ) having one or more openings ( 39 ), the air flow, when the damper is in a first position, without hindrance can pass to the rising duct ( 14 ), while the air flow to the same is blocked when the damper ( 19 ) cooperates with the wall ( 38 ) in a second position.  
   
   
       7 . Piece of freezing furniture according to  claim 1 , wherein adjacent to said outlet ( 22 ) guiding means ( 23 ) is arranged, to direct or reverse the air flow toward the inlet ( 21 ).  
   
   
       8 . Piece of freezing furniture according to  claim 7 , wherein the guiding means ( 23 ) extends in the direction from the outlet opening ( 22 ) of the insert into the primary air duct ( 4 ) as well as forward in the airflow direction toward the temperature change unit ( 36 ).  
   
   
       9 . Insert for freezing furniture comprising a secondary air duct ( 20 ) having an outlet opening ( 22 ), as well as an inlet opening ( 21 ), which is possible to open and close by a damper ( 19 ), 
 the damper ( 19 ) being movable between a first position, in which the inlet opening ( 21 ) of the secondary air duct ( 20 ) is kept closed and rising duct ( 14 ) of a primary air duct ( 4 ) in a piece of freezing furniture is kept open, and a second position in which the inlet opening ( 21 ) is kept open and the rising duct ( 14 ) is kept closed.    
   
   
       10 . Piece of freezing furniture according to  claim 2 , wherein the damper ( 19 ) is actuated by spring ( 31 ), which always aims to hold the same in said first position.  
   
   
       11 . Piece of freezing furniture according to  claim 3 , wherein the damper ( 19 ) is actuated by spring ( 31 ), which always aims to hold the same in said first position.  
   
   
       12 . Piece of freezing furniture according to  claim 11  , wherein at the damper ( 19 ) a flexible bladder ( 32 ) is arranged, which is possible to fill with a pressurized fluid from a fluid source connected to the same, to, when need arises, bring the damper ( 19 ) to said second position.  
   
   
       13 . Piece of freezing furniture according to  claim 10  , wherein at the damper ( 19 ) a flexible bladder ( 32 ) is arranged, which is possible to fill with a pressurized fluid from a fluid source connected to the same, to, when need arises, bring the damper ( 19 ) to said second position.  
   
   
       14 . Piece of freezing furniture according to  claim 12  , wherein at the damper ( 19 ) a flexible bladder ( 32 ) is arranged, which is possible to fill with a pressurized fluid from a fluid source connected to the same, to, when need arises, bring the damper ( 19 ) to said second position.  
   
   
       15 . Piece of freezing furniture according to  claim 5  , wherein at the damper ( 19 ) a flexible bladder ( 32 ) is arranged, which is possible to fill with a pressurized fluid from a fluid source connected to the same, to, when need arises, bring the damper ( 19 ) to said second position.  
   
   
       16 . Piece of freezing furniture according to  claim 4  , wherein at the damper ( 19 ) a flexible bladder ( 32 ) is arranged, which is possible to fill with a pressurized fluid from a fluid source connected to the same to, when need arises, bring the damper ( 19 ) to said second position.  
   
   
       17 . Piece of freezing furniture according to  claim 16 , wherein the damper ( 19 ) is arranged to co-operate with a wall ( 38 ) having one or more openings ( 39 ), the air flow, when the damper is in a first position, without hindrance can pass to the rising duct ( 14 ), while the air flow to the same is blocked when the damper ( 19 ) cooperates with the wall ( 38 ) in a second position.  
   
   
       18 . Piece of freezing furniture according to  claim 12 , wherein the damper ( 19 ) is arranged to co-operate with a wall ( 38 ) having one or more openings ( 39 ), the air flow, when the damper is in a first position, without hindrance can pass to the rising duct ( 14 ), while the air flow to the same is blocked when the damper ( 19 ) cooperates with the wall ( 38 ) in a second position.  
   
   
       19 . Piece of freezing furniture according to  claim 13 , wherein the damper ( 19 ) is arranged to co-operate with a wall ( 38 ) having one or more openings ( 39 ), the air flow, when the damper is in a first position, without hindrance can pass to the rising duct ( 14 ), while the air flow to the same is blocked when the damper ( 19 ) cooperates with the wall ( 38 ) in a second position.  
   
   
       20 . Piece of freezing furniture according to  claim 2 , wherein the damper ( 19 ) is arranged to co-operate with a wall ( 38 ) having one or more openings ( 39 ), the air flow, when the damper is in a first position, without hindrance can pass to the rising duct ( 14 ), while the air flow to the same is blocked when the damper ( 19 ) cooperates with the wall ( 38 ) in a second position.