CA2084688A1 - Dishwasher ventilation by natural air flow - Google Patents
Dishwasher ventilation by natural air flowInfo
- Publication number
- CA2084688A1 CA2084688A1 CA 2084688 CA2084688A CA2084688A1 CA 2084688 A1 CA2084688 A1 CA 2084688A1 CA 2084688 CA2084688 CA 2084688 CA 2084688 A CA2084688 A CA 2084688A CA 2084688 A1 CA2084688 A1 CA 2084688A1
- Authority
- CA
- Canada
- Prior art keywords
- compartment
- tub
- flow
- opening
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000009423 ventilation Methods 0.000 title abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 description 5
- 239000003599 detergent Substances 0.000 description 2
- 238000004851 dishwashing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
DISHWASHER VENTILATION BY NATURAL AIR FLOW
ABSTRACT OF THE DISCLOSURE
A dishwasher including a wash compartment (1) with a main door opening towards the front (2) and attached at the bottom of the machine. The compartment has an in-flow opening (9) and an out-flow opening (3) which communicate with the outside and provide a natural air-flow through the wash compartment. The in-flow opening (9) is defined, when the main door is closed, by the lower edge (12) of an inside wall of the main door (8) and by a transverse section below the wash compartment (4) molded in the shape of a tub into which the aforementioned lower edge (12) inserts. The tub (4) collects part of the water sprayed by the water jets (13) housed in the tub in order to close the in-flow opening (9) when the water jets (13) are in operation. When the water jets are not in operation, the tub (4) empties itself, re-opening the in-flow opening (9), through a calibrated path (14) which allows the water to flow towards the bottom of the wash compartment.
ABSTRACT OF THE DISCLOSURE
A dishwasher including a wash compartment (1) with a main door opening towards the front (2) and attached at the bottom of the machine. The compartment has an in-flow opening (9) and an out-flow opening (3) which communicate with the outside and provide a natural air-flow through the wash compartment. The in-flow opening (9) is defined, when the main door is closed, by the lower edge (12) of an inside wall of the main door (8) and by a transverse section below the wash compartment (4) molded in the shape of a tub into which the aforementioned lower edge (12) inserts. The tub (4) collects part of the water sprayed by the water jets (13) housed in the tub in order to close the in-flow opening (9) when the water jets (13) are in operation. When the water jets are not in operation, the tub (4) empties itself, re-opening the in-flow opening (9), through a calibrated path (14) which allows the water to flow towards the bottom of the wash compartment.
Description
2~g~
1DI~HWASH~R ~ENTIL~TION B'Y NA~U~AL AIR FLOW
2BAC~GROUN~ OF T~E _NVENTION
1DI~HWASH~R ~ENTIL~TION B'Y NA~U~AL AIR FLOW
2BAC~GROUN~ OF T~E _NVENTION
3~IELD OF THE INVE~TION
4The present invention relates to ~ dishwashing machine ventilated so as to promota a natural air Elow into the 6 wash compartmènt in order to dry dishes at the end of the 7 operation cycle.
8 DESCRIPTION OF THE RE~ATED AR~
9 As is commonly known in modern dishwashers, there is typically at least one opening which vents to the outside 11 in order to dry the dishes. Such an opening removes the 12 ~team present in the wash compartment at the end of the 13 ~inal hot-w~ter rinse cycle of the dishes.
14 It is also common practice, for simple and efficient drying of the dishes, to include a lower in-flow and an 16 upper out-flow opening in communication with the outside of 17 the wash compartment for the natural flow of air through 18 the wash compartment (as in 3ritish patent no. 665 691 and 19 in the Fr~nch Utility Model No. 2 075 918, ~or example).
2~ ~ a~arement~ned Frenc~ ~tility M~d~l, in particular, 21 ensures that the in-flow and o~t-f~ow openings, in 22 alignment with the main door to the machine, are 23 essen~ially alosed during the normal operativn of the 24 dishwasher by a veil of water (from appropriate water jets) which flows along the interior walls o~ the wash 26 compartment.
27 Such a solution allows for final drying o~ the dish~s 28 without the need for undesirable forced-air ventllatlon 29 systems, but has the disadvantage that, during normal operation o~ the machine, the aforementioned in-flow and .
2~8~8 1 out-flow openings emit noise and steam from the wash 2 compartment. The steam, in particular, can produce bad 3 smells, and can damage the control panel normally located 4 at the top of the main door to the machine. Further, in practice, the aforementioned veil of water cannot efficiently and continuously close the in-flow!and out-flow 7 openings, particularly when the machine is in the middle of 8 a wash cycle using water plus detergent. As is commonly 9 known, the detergents normally used in dishwashers diminish the surface tension of the wash-water; for this reason, it 11 is practically impossible to close the aforementioned 12 openings with an uninterrupted veil of water.
13 ~IJI~Y OF THE IN~JENq~ION
14 The objective of the present invention is to supply a dishwasher with a means of ventilation which will produce 16 an efficient, nat~ural air flow through the wash compartment 17 during the drying cycle without, however, allowing 18 substantial escape o~ steam and/or noise from the machine.
19 Another ob~ective of this invention is to supply a dishwasher, of the type mentioned, which would have a 21 particularly simple and useful structural design.
22 According to this invention, said objectives are 23 obtained in a dishwasher haviny a method of ventilation by 24 means of a natural air flow which incorporates the characteristics of the attached claims.
2 6 BRIEF DESCRIPTION OF TI~E: DRAWING!~
27 The characteristics and advantages of this document 28 will be clarified in the following description, given only 29 as a non-limiting example, with reference to the attached drawings, in which:
31 - Figure 1 is a partial, elevational side-view of the 32 preferred structure of the dishwasher; and 33 - Figure 2 shows an enlarged detail in section of the 34 dishwasher, taken from line II-II in Figure 1.
2~688 DETAILED DESC~RIPq~ION OF T~E PREFERRED !E:MBODIME~t7rr 2 Referring specifically to Fig.1, the dishwasher 3 principally includes a wash compartment l accessible 4 through a front door 2. The compartment 1 is equipped with at least one out-flow opening 3 connected to the outside of 6 the compartment. A bottom wall of the compartment 1 7 includes a front transverse section 4 molded with a front 8 wall 5 which extends upwardly to a level higher than the 9 maximum level which can be reached by water in the compartment. The main door 2 is connected to the front 11 wall 5 at the bottom by a hinge 6 and is essentially 12 hollo~; that is, it is molded as shown in Figure 1 with a 13 forked longitudinal section having an external wall 7 and 14 an internal wall 8. Internal wall 8 has a lower edge 12.
In addition, the main door 2 should preferably have a 16 control panel 10 ~to run the machine, which should be 17 located at the top of the main door 2.
18 When the main door 2 is closed, as shown in Figure 2, 19 the front wall 5 of the wash compartment is placed between the main door's external wall 7 and its internal wall 8.
21 In particular, the lower edge 12 of the internal wall 8 of 22 the main door and the transverse section 4 of the 23 compartment define an opening 9 in alignment with the 24 bottom of the door 2 whose size is relativ~ly wide and which communicates with the outside environment at a level 26 lower than that of opening 3.
27 As can ba seen, openings 3 and 9 normally allow a 28 natural air flow that enters the wash compartment 1 through 29 opening 9 and escapes through opening 3. ~t the end of the dishwasher's operating cycle, said air flow pro~ides an 31 efficient and fast drying o~ the dishes which have been 32 previously sprayed with water via jet sprays 13 housed in 33 the wash compartment 1 and fed by a pump (not shown).
34 According to one aspect of this invention, the transverse section 4 of the compartment is essentially 36 molded in the shape of a tub into which the lower edge 12 2~8~8 1 of the main door 2 is inserted when the main door is 2 closed. In particular, the tub section 4 is externally 3 defined by the already mentioned front wall 5 and 4 internally by a back wall 11 and is enclosed on the ends, for example, by side walls of the wash compartment 1. The 6 back wall 11 may, for example, be welded to the! side walls 7 of the compartment 1, extending upwardly to a level higher 8 than the lower edge 12 of the main door~ In addition, khe 9 back wall 11 of the tub section 4 is equipped with at least on~ calibrated path I4 (Figure 2), which extends beneath 11 the in-flow opening 9, through which the tub section 4 12 opens to the bottom of the wash compartment 1. The 13 recalibrated path 14 preferably being a notch in the back 14 wall 11 of a selected size.
During the various phases of each operating cycle of 16 the dishwasher in which the water jets 13 are in operation, 17 the tub section 4~collects part of the water sprayed by 18 these jets 13 which exceeds the capacity of the calibrated 19 path tor paths) 14. Tub section 4 tends to fill with water (which eventually overflows into the compartment 1, over 21 wall 11) which essentially closes the in-flow opening 9.
22 In consequence, when the machine is normally in operation 23 there is no substantial escape of steam and/or noise from 24 khe compartment 1. The aforementioned natural air flow through the wash compartment 1 i5 interrupted as opening 3, 26 which should preferably be placed in a bac~ region of the 27 compartment itself, does not allow an appreciable amount of 28 steam and/or noise to escape Erom the dishwasher.
29 Any possihle escape o~ steam from the tub 4 is advantageously intercepted by a wall 15, placed above the 31 tub 4 in such a manner as to close the space between 32 surfaces 7 and 8 of the main door 2. In this manner, any 33 possible damage to the panel 10 owing to steam is impeded.
34 When the water jets 13 are not in operation (for example, during a final drying phase), the path 14 allows 36 substantial drainage from the tub 4 into the bottom of the 37 compartment 1 which is drained through a drainage pump (not 20~88 1 shown for the sake of simplicity). When the water level 2 falls below the lower edge 12, the opening 9 is again 3 opened in order to allow a natural flow of air through 4 compartment 1, as described previously.
The particular structural simplicity of the dishwasher 6 according to this invention seems evident. obJiously, the 7 dishwasher described as an example may be subject to 8 numerous modifications within the scope of this document.
4The present invention relates to ~ dishwashing machine ventilated so as to promota a natural air Elow into the 6 wash compartmènt in order to dry dishes at the end of the 7 operation cycle.
8 DESCRIPTION OF THE RE~ATED AR~
9 As is commonly known in modern dishwashers, there is typically at least one opening which vents to the outside 11 in order to dry the dishes. Such an opening removes the 12 ~team present in the wash compartment at the end of the 13 ~inal hot-w~ter rinse cycle of the dishes.
14 It is also common practice, for simple and efficient drying of the dishes, to include a lower in-flow and an 16 upper out-flow opening in communication with the outside of 17 the wash compartment for the natural flow of air through 18 the wash compartment (as in 3ritish patent no. 665 691 and 19 in the Fr~nch Utility Model No. 2 075 918, ~or example).
2~ ~ a~arement~ned Frenc~ ~tility M~d~l, in particular, 21 ensures that the in-flow and o~t-f~ow openings, in 22 alignment with the main door to the machine, are 23 essen~ially alosed during the normal operativn of the 24 dishwasher by a veil of water (from appropriate water jets) which flows along the interior walls o~ the wash 26 compartment.
27 Such a solution allows for final drying o~ the dish~s 28 without the need for undesirable forced-air ventllatlon 29 systems, but has the disadvantage that, during normal operation o~ the machine, the aforementioned in-flow and .
2~8~8 1 out-flow openings emit noise and steam from the wash 2 compartment. The steam, in particular, can produce bad 3 smells, and can damage the control panel normally located 4 at the top of the main door to the machine. Further, in practice, the aforementioned veil of water cannot efficiently and continuously close the in-flow!and out-flow 7 openings, particularly when the machine is in the middle of 8 a wash cycle using water plus detergent. As is commonly 9 known, the detergents normally used in dishwashers diminish the surface tension of the wash-water; for this reason, it 11 is practically impossible to close the aforementioned 12 openings with an uninterrupted veil of water.
13 ~IJI~Y OF THE IN~JENq~ION
14 The objective of the present invention is to supply a dishwasher with a means of ventilation which will produce 16 an efficient, nat~ural air flow through the wash compartment 17 during the drying cycle without, however, allowing 18 substantial escape o~ steam and/or noise from the machine.
19 Another ob~ective of this invention is to supply a dishwasher, of the type mentioned, which would have a 21 particularly simple and useful structural design.
22 According to this invention, said objectives are 23 obtained in a dishwasher haviny a method of ventilation by 24 means of a natural air flow which incorporates the characteristics of the attached claims.
2 6 BRIEF DESCRIPTION OF TI~E: DRAWING!~
27 The characteristics and advantages of this document 28 will be clarified in the following description, given only 29 as a non-limiting example, with reference to the attached drawings, in which:
31 - Figure 1 is a partial, elevational side-view of the 32 preferred structure of the dishwasher; and 33 - Figure 2 shows an enlarged detail in section of the 34 dishwasher, taken from line II-II in Figure 1.
2~688 DETAILED DESC~RIPq~ION OF T~E PREFERRED !E:MBODIME~t7rr 2 Referring specifically to Fig.1, the dishwasher 3 principally includes a wash compartment l accessible 4 through a front door 2. The compartment 1 is equipped with at least one out-flow opening 3 connected to the outside of 6 the compartment. A bottom wall of the compartment 1 7 includes a front transverse section 4 molded with a front 8 wall 5 which extends upwardly to a level higher than the 9 maximum level which can be reached by water in the compartment. The main door 2 is connected to the front 11 wall 5 at the bottom by a hinge 6 and is essentially 12 hollo~; that is, it is molded as shown in Figure 1 with a 13 forked longitudinal section having an external wall 7 and 14 an internal wall 8. Internal wall 8 has a lower edge 12.
In addition, the main door 2 should preferably have a 16 control panel 10 ~to run the machine, which should be 17 located at the top of the main door 2.
18 When the main door 2 is closed, as shown in Figure 2, 19 the front wall 5 of the wash compartment is placed between the main door's external wall 7 and its internal wall 8.
21 In particular, the lower edge 12 of the internal wall 8 of 22 the main door and the transverse section 4 of the 23 compartment define an opening 9 in alignment with the 24 bottom of the door 2 whose size is relativ~ly wide and which communicates with the outside environment at a level 26 lower than that of opening 3.
27 As can ba seen, openings 3 and 9 normally allow a 28 natural air flow that enters the wash compartment 1 through 29 opening 9 and escapes through opening 3. ~t the end of the dishwasher's operating cycle, said air flow pro~ides an 31 efficient and fast drying o~ the dishes which have been 32 previously sprayed with water via jet sprays 13 housed in 33 the wash compartment 1 and fed by a pump (not shown).
34 According to one aspect of this invention, the transverse section 4 of the compartment is essentially 36 molded in the shape of a tub into which the lower edge 12 2~8~8 1 of the main door 2 is inserted when the main door is 2 closed. In particular, the tub section 4 is externally 3 defined by the already mentioned front wall 5 and 4 internally by a back wall 11 and is enclosed on the ends, for example, by side walls of the wash compartment 1. The 6 back wall 11 may, for example, be welded to the! side walls 7 of the compartment 1, extending upwardly to a level higher 8 than the lower edge 12 of the main door~ In addition, khe 9 back wall 11 of the tub section 4 is equipped with at least on~ calibrated path I4 (Figure 2), which extends beneath 11 the in-flow opening 9, through which the tub section 4 12 opens to the bottom of the wash compartment 1. The 13 recalibrated path 14 preferably being a notch in the back 14 wall 11 of a selected size.
During the various phases of each operating cycle of 16 the dishwasher in which the water jets 13 are in operation, 17 the tub section 4~collects part of the water sprayed by 18 these jets 13 which exceeds the capacity of the calibrated 19 path tor paths) 14. Tub section 4 tends to fill with water (which eventually overflows into the compartment 1, over 21 wall 11) which essentially closes the in-flow opening 9.
22 In consequence, when the machine is normally in operation 23 there is no substantial escape of steam and/or noise from 24 khe compartment 1. The aforementioned natural air flow through the wash compartment 1 i5 interrupted as opening 3, 26 which should preferably be placed in a bac~ region of the 27 compartment itself, does not allow an appreciable amount of 28 steam and/or noise to escape Erom the dishwasher.
29 Any possihle escape o~ steam from the tub 4 is advantageously intercepted by a wall 15, placed above the 31 tub 4 in such a manner as to close the space between 32 surfaces 7 and 8 of the main door 2. In this manner, any 33 possible damage to the panel 10 owing to steam is impeded.
34 When the water jets 13 are not in operation (for example, during a final drying phase), the path 14 allows 36 substantial drainage from the tub 4 into the bottom of the 37 compartment 1 which is drained through a drainage pump (not 20~88 1 shown for the sake of simplicity). When the water level 2 falls below the lower edge 12, the opening 9 is again 3 opened in order to allow a natural flow of air through 4 compartment 1, as described previously.
The particular structural simplicity of the dishwasher 6 according to this invention seems evident. obJiously, the 7 dishwasher described as an example may be subject to 8 numerous modifications within the scope of this document.
Claims (3)
1. A dishwasher ventilated by means of natural air flow, including a wash compartment with a substantially hollow front door attached to the compartment near the bottom, the compartment having at least one in-flow opening and one out-flow opening which are normally in communication with the outside environment and which promote a natural flow of air through the wash compartment and the openings; and a plurality of water jets which spray water on articles placed in the compartment, characterized in that the in-flow opening 9 is defined, when the front door 2 is closed, by a lower edge 12 of an internal wall 8 of the door and by a transverse section 4 of the compartment 1 which is essentially molded in the shape of a tub into which the lower edge 12 is inserted, the tub 4 including a back wall 11 extending upward to a level greater than that of the lower edge 12, as well as a front wall 5 extending upward to a level greater than both the lower edge 12 and a defined maximum water level in the wash compartment 1, the tub 4 collecting part of the water sprayed by the aforementioned water jets 13 in such a manner as to close the in-flow opening 9 only when the water jets are in operation.
2. A dishwasher according to Claim 1, characterized in that the back wall 11 includes at least one calibrated path which extends below the opening 9 and through which the water collected in tub 4 flows to the bottom of the wash compartment 1 in order to open the opening 9 when the water jets 13 are not in operation.
3. A dishwasher according to Claim 1, characterized in that, above the tub 4, a space between an external wall 7 and the internal wall 8 of the main door is essentially enclosed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT91PN000045U IT225675Y1 (en) | 1991-12-13 | 1991-12-13 | DISHWASHER WITH NATURAL AIR CIRCULATION VENTILATION VEHICLES |
| ITPN91U000045 | 1991-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2084688A1 true CA2084688A1 (en) | 1993-06-14 |
Family
ID=11394561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2084688 Abandoned CA2084688A1 (en) | 1991-12-13 | 1992-12-07 | Dishwasher ventilation by natural air flow |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2084688A1 (en) |
| IT (1) | IT225675Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0752232A1 (en) * | 1995-07-06 | 1997-01-08 | Merloni Elettrodomestici S.p.A. | Dishwashing machine having a natural ventilation drying system |
-
1991
- 1991-12-13 IT IT91PN000045U patent/IT225675Y1/en active IP Right Grant
-
1992
- 1992-12-07 CA CA 2084688 patent/CA2084688A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0752232A1 (en) * | 1995-07-06 | 1997-01-08 | Merloni Elettrodomestici S.p.A. | Dishwashing machine having a natural ventilation drying system |
Also Published As
| Publication number | Publication date |
|---|---|
| IT225675Y1 (en) | 1997-01-13 |
| ITPN910045V0 (en) | 1991-12-13 |
| ITPN910045U1 (en) | 1993-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |