A heat drying device of a dishwasher

Abstract

The utility model discloses a kind of hot drying devices of dish-washing machine, it is related to dish-washing machine technical field, including heating back seat and butt joint backplate, the heating back seat is fixedly installed in dish-washing machine inner chamber back, and two tableware placing baskets are fixedly installed in the butt joint backplate front side, two the tableware placing basket both sides are connected and fixed with dish-washing machine inner chamber two side walls by drawer slide rail, the butt joint backplate is provided with ventilation cavity towards heating back seat side, and the bottom of the two tableware placing baskets is provided with a plurality of hot air delivery bottom rods in the front side of butt joint backplate, using the characteristics that hot air density is low and will float, ensure the circulation of hot air, effectively improve the drying efficiency of tableware, and avoid the upper basket because of distance heating source too close to easily produce local overheating, and the problem that bottom tableware is blocked and leads to drying insufficient. The device is simple in structure, reasonable in design, easy to install and maintain, and provides a more efficient and uniform drying solution for dish-washing machines.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, specifically to a hot drying device for a dishwasher. Background Technology

[0002] After washing the dishes, the dishwasher needs to dry the dishes in the washing container to prevent secondary contamination due to moisture. Usually, a fan is used to draw in air, and a heating device is set up to heat the air drawn in. The heated air is sent into the washing container to dry the dishes. The cold air flow channel that draws in the air from the outside and the hot air flow channel that is discharged from the drying container are set up independently.

[0003] Existing dishwashers typically employ a horizontally arranged tubular heater at the top of the washing chamber, with a centrifugal fan at the bottom featuring a single air outlet. This design suffers from uneven heat distribution; the upper rack is prone to localized overheating due to its proximity to the heating source, while the bottom dishes are obstructed, resulting in insufficient drying. To address this, we propose a new dishwasher drying device. Utility Model Content

[0004] The purpose of this invention is to address the problem that existing dishwashers' hot drying devices often use horizontally arranged tubular heaters at the top of the washing chamber and centrifugal fans with a single air outlet below. This structure suffers from uneven hot air distribution, with the upper dish rack prone to localized overheating due to its proximity to the heating source, and the bottom dishes being obstructed, resulting in insufficient drying. This invention provides a hot drying device for a dishwasher.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A dishwasher's hot drying device includes a heating backrest and a docking backplate. The heating backrest is fixedly installed on the rear wall of the dishwasher's inner cavity, and two dish racks are fixedly installed on the front side of the docking backplate. The two dish racks are connected and fixed to the side walls of the dishwasher's inner cavity via drawer slides. A ventilation cavity is provided on the side of the docking backplate facing the heating backrest, and multiple hot air delivery rods are provided on the front side of the docking backplate corresponding to the bottom of the two dish racks. The multiple hot air delivery rods are connected to the ventilation cavity on the back side of the docking backplate, and the ventilation cavity on the back side of the docking backplate is connected to the air outlet of the heating backrest.

[0007] Furthermore, multiple air jet nozzles are evenly distributed at the upper end of the hot air delivery base rod.

[0008] Furthermore, a centrifugal fan is installed at the upper end of the inner cavity of the heating back seat, and the air inlet of the centrifugal fan faces rearward and is connected to the outside air through an air inlet pipe. A resistance wire heating tube is provided at the upper end of the inner cavity of the heating back seat corresponding to the lower side of the centrifugal fan, and multiple hot air outlets are provided at the bottom front side of the heating back seat.

[0009] Furthermore, a filter element is installed between the heating back seat cavity and the resistance wire heating tube and the hot air outlet.

[0010] Furthermore, both the docking back plate and the tableware placement basket are made of stainless steel, and the bottom of the ventilation cavity on the back side of the docking back plate is arrayed with multiple heat exchange protrusions.

[0011] Furthermore, a square groove is formed on the front of the heating back seat corresponding to the rear edge of the docking back plate, and a magnetic sealing rubber strip is fixedly connected in the square groove, the magnetic sealing rubber strip abutting against the rear side of the docking back plate.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model features a heated backrest that heats the back of the dishwasher's interior cavity and sprays hot air from the bottom. A connecting backplate connects with the front of the heated backrest, allowing hot air to be evenly distributed to the bottom of the dish rack via a bottom rod. This ensures the hot air is directed closer to the underside of the dishes. An exhaust mechanism at the top of the dishwasher uses an exhaust fan to extract the hot air after drying. Utilizing the low density of hot air, it rises, ensuring air circulation and effectively improving drying efficiency. This also avoids the problems of localized overheating in the upper rack due to proximity to the heating source and insufficient drying of dishes at the bottom due to obstruction. This device has a simple structure, reasonable design, and is easy to install and maintain, providing a more efficient and uniform drying solution for dishwashers.

[0014] 2. This utility model features a centrifugal fan that draws in room temperature air from the outside through an air inlet pipe, pressurizes it, and pumps it downwards. After being heated by a resistance wire heating tube, the air is ejected from multiple hot air outlets located near the bottom. These hot air outlets ensure that the hot air is evenly distributed into the dish rack, resulting in uniform heating of the dishes. This avoids the problem of insufficient drying caused by the bottom dishes being obstructed, thus improving the drying effect.

[0015] 3. This invention utilizes multiple heat exchange protrusions, which exchange heat with the hot air passing through the ventilation cavity on the back of the docking back plate. Through heat conduction via the docking back plate and the dish rack, the drying efficiency of the dishes is further improved. Simultaneously, the stainless steel material offers excellent corrosion resistance and durability, ensuring the dishwasher's lifespan and the hygiene and safety of the dishes. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a side sectional view of the present invention;

[0018] Figure 3 This is a front view of the heating backrest of this utility model;

[0019] Figure 4 This is a rear view of the docking backplate of this utility model.

[0020] Reference numerals: 1. Heating back seat; 2. Docking back plate; 3. Dishware basket; 4. Hot air delivery base rod; 5. Air nozzle; 6. Centrifugal fan; 7. Air inlet pipe; 8. Filter element; 9. Hot air outlet; 10. Heat exchange protrusion; 11. Magnetic sealing rubber strip; 12. Resistance wire heating tube. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] Please see Figures 1-4 This utility model provides a hot drying device for a dishwasher, including a heating back seat 1 and a docking back plate 2. The heating back seat 1 is fixedly installed on the rear wall of the dishwasher cavity, and two tableware baskets 3 are fixedly installed on the front side of the docking back plate 2. The two tableware baskets 3 are connected and fixed to the two side walls of the dishwasher cavity through drawer slides. A ventilation cavity is provided on the side of the docking back plate 2 facing the heating back seat 1, and multiple hot air delivery bottom rods 4 are provided on the front side of the docking back plate 2 corresponding to the bottom of the two tableware baskets 3. The multiple hot air delivery bottom rods 4 are connected to the ventilation cavity on the back side of the docking back plate 2, and the ventilation cavity on the back side of the docking back plate 2 is connected to the air outlet of the heating back seat 1.

[0023] In this embodiment, preferably, a plurality of air jet nozzles 5 are evenly distributed on the upper end of the hot air delivery bottom rod 4; through the plurality of air jet nozzles 5, the air jet nozzles 5 can evenly spray hot air, blowing and drying the bottom of the tableware in the tableware placement basket 3, thereby improving the drying efficiency and avoiding the problem of local overheating caused by the upper bowl basket being too close to the heating source.

[0024] In this embodiment, preferably, a centrifugal fan 6 is installed at the upper end of the inner cavity of the heating back seat 1, and the air inlet of the centrifugal fan 6 faces rearward and is connected to the outside air through the air inlet pipe 7. A resistance wire heating tube 12 is arranged at the upper end of the inner cavity of the heating back seat 1 corresponding to the lower side of the centrifugal fan 6, and multiple hot air outlets 9 are arranged at the bottom front side of the heating back seat 1. Through the centrifugal fan 6, the centrifugal fan 6 draws in room temperature air from the outside through the air inlet pipe 7, pressurizes it and pumps it downward. After being heated by the resistance wire heating tube 12, it is sprayed out from the multiple hot air outlets 9. The multiple hot air outlets 9 arranged near the bottom can evenly blow hot air into the tableware placement basket 3, so that the tableware is heated evenly, avoiding the problem of insufficient drying of the tableware at the bottom due to obstruction, and improving the drying effect.

[0025] In this embodiment, preferably, a filter element 8 is installed between the heating element heating tube 12 and the hot air outlet 9 in the inner cavity of the heating back seat 1; through the filter element 8, the heated air can be filtered to remove impurities and odors from the air, ensuring that the hot air blown onto the tableware is clean, and further improving the drying effect and hygiene of the tableware.

[0026] In this embodiment, preferably, both the docking back plate 2 and the tableware placement basket 3 are made of stainless steel, and the bottom of the ventilation cavity on the back side of the docking back plate 2 is arrayed with multiple heat exchange protrusions 10. Through these multiple heat exchange protrusions 10, heat can be exchanged with the hot air passing through the ventilation cavity on the back side of the docking back plate 2. The heat conduction through the docking back plate 2 and the tableware placement basket 3 further improves the drying efficiency of the tableware. Simultaneously, the stainless steel material has good corrosion resistance and durability, ensuring the service life of the dishwasher and the hygiene and safety of the tableware.

[0027] In this embodiment, preferably, a square groove is formed on the front side of the heating back seat 1 corresponding to the rear edge of the docking back plate 2, and a magnetic sealing rubber strip 11 is fixedly connected in the square groove. The magnetic sealing rubber strip 11 abuts against the rear side of the docking back plate 2. The square groove and the magnetic sealing rubber strip 11 facilitate docking between the rear edge of the docking back plate 2 and the heating back seat 1, and improve the sealing of the contact surface.

[0028] The working principle and usage process of this utility model are as follows: During use, the heating backrest 1 heats the back side of the dishwasher cavity and sprays hot air from the bottom of the cavity. The docking backplate 2 connects with the front of the heating backrest 1, allowing hot air to be evenly sprayed from the bottom rod 4 onto the bottom of the dish rack 3. This ensures the hot air is closer to the underside of the dishes in the dish rack 3. An exhaust mechanism is located at the top of the dishwasher. This mechanism uses an exhaust fan to extract the hot air after drying the dishes. Utilizing the low density and rising properties of hot air, it ensures air circulation, effectively improving the drying efficiency of the dishes and avoiding the problems of localized overheating in the upper rack due to its proximity to the heating source, and insufficient drying of the bottom dishes due to obstruction. This device has a simple structure, reasonable design, and is easy to install and maintain, providing a more efficient and uniform drying solution for dishwashers.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat drying device for a dishwasher, characterized in that: The device includes a heating backrest (1) and a docking backplate (2). The heating backrest (1) is fixedly installed on the rear wall of the dishwasher cavity, and two tableware baskets (3) are fixedly installed on the front side of the docking backplate (2). The two tableware baskets (3) are connected and fixed to the two side walls of the dishwasher cavity through drawer slides. The docking backplate (2) has a ventilation cavity on the side facing the heating backrest (1), and multiple hot air delivery bottom rods (4) are provided on the front side of the docking backplate (2) corresponding to the bottom of the two tableware baskets (3). The multiple hot air delivery bottom rods (4) are connected to the ventilation cavity on the back side of the docking backplate (2), and the ventilation cavity on the back side of the docking backplate (2) is connected to the air outlet of the heating backrest (1).

2. The heat drying device for a dishwasher according to claim 1, characterized in that: Multiple air nozzles (5) are evenly distributed at the upper end of the hot air delivery rod (4).

3. The hot drying device for a dishwasher according to claim 1, characterized in that: A centrifugal fan (6) is installed at the upper end of the inner cavity of the heating back seat (1), and the air inlet of the centrifugal fan (6) is connected to the outside air through the air inlet pipe (7). A resistance wire heating tube (12) is provided at the upper end of the inner cavity of the heating back seat (1) corresponding to the lower side of the centrifugal fan (6), and multiple hot air outlets (9) are provided at the bottom front side of the heating back seat (1).

4. The heat drying device for a dishwasher according to claim 3, characterized in that: A filter element (8) is installed between the heating back seat (1) and the hot air outlet (9).

5. The heat drying device for a dishwasher according to claim 1, characterized in that: Both the docking back plate (2) and the tableware placement basket (3) are made of stainless steel, and the bottom of the ventilation cavity on the back side of the docking back plate (2) is arrayed with multiple heat exchange protrusions (10).

6. The hot drying device for a dishwasher according to claim 1, characterized in that: A square groove is provided on the front of the heating back seat (1) corresponding to the rear edge of the docking back plate (2), and a magnetic sealing rubber strip (11) is fixedly connected in the square groove. The magnetic sealing rubber strip (11) abuts against the rear side of the docking back plate (2).

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