Variable-power toaster

Abstract

The utility model discloses a variable-frequency toaster, and belongs to the technical field of household appliances. Comprising a main body part, and the main body part is provided with a power switch, a first heating plate, a second heating plate and a third heating plate, the first heating plate and the second heating plate are connected in series; the third heating plate is arranged between the first heating plate and the second heating plate and is connected with the first heating plate and the second heating plate in parallel; baking spaces are respectively arranged between the first heating plate and the third heating plate and between the second heating plate and the third heating plate; wherein one end, close to a phase line, of the third heating plate is connected with the power switch through a relay switch and a rectifier diode; and the direction of the rectifier diode points to the phase line. According to the utility model, the food single-side baking function is realized, the production process problem, the service life problem and the electrical safety problem are solved, and meanwhile, the baking color heat distribution is easier to adjust.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a toaster, especially a variable power toaster. Background Technology

[0002] A toaster, also known as an automatic bread toaster or bread oven, is an electric cooking appliance specifically designed for re-toasting sliced ​​bread. Using it not only toasts bread slices to a golden brown color but also enhances their aroma and texture, making them more appetizing. Toasters vary in function and can be categorized by bread placement method, function adjustment method, and control structure. Common types include pop-up toasters, automatic-manual adjustable toasters, and time-controlled toasters.

[0003] The prior art (publication number: CN 204258262 U) discloses an overheat and overpressure resistant toaster, including a switch S1, a switch S2, heating wires H2, H1, H3, and H4, a current fuse FS1, a diode D1, an electromagnet M1, and a control circuit module, as well as a temperature fuse FT1 and a varistor Rv1. This invention can automatically cut off power under high temperature or high pressure conditions, thereby protecting all circuit components.

[0004] However, in the process of implementing the technical solution in the prior art, the applicant discovered the following technical problems in the prior art:

[0005] While existing technologies can provide overheat protection, conventional toasters consist of three sets of heating wires wound around a mica plate to form a double-slot oven structure, capable of toasting two slices of bread at a time. There are three possible wiring methods for the three heating wires: three in series, two in series and one in parallel, and three in parallel. However, for bagels, which require single-sided toasting, the three-in-series method is unsuitable. Although the two-in-series and one-in-parallel or three-in-parallel methods can achieve single-sided toasting, high-voltage 220-240VAC products are limited by Ohm's law and product structure, requiring specific mica plate specifications. Using the two-in-series and one-in-parallel or three-in-parallel methods results in heating wires with high resistance per meter and very thin cross-sections, leading to difficulties in controlling the manufacturing process, short lifespan, and significant electrical safety risks. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a variable power toaster, which solves the technical problems of difficult production process control, short life and high electrical safety risk in the prior art, and at least achieves one of the technical effects of controllable production process, long product life and low electrical safety risk.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0008] A variable power toaster includes a main body: the main body is provided with a power switch and a first heating plate, a second heating plate, and a third heating plate that are parallel to each other; the first heating plate and the second heating plate are connected in series; the third heating plate is disposed between the first heating plate and the second heating plate and is connected in parallel with the first heating plate and the second heating plate; baking spaces are respectively provided between the first heating plate and the third heating plate and between the second heating plate and the third heating plate; wherein, the end of the third heating plate near the phase line is connected to the power switch through a relay switch and a rectifier diode; the direction of the rectifier diode is pointing towards the phase line.

[0009] Preferably, a relay switch is provided at the end of the first heating plate near the phase line.

[0010] More preferably, the third heating plate is provided with a transfer relay switch at one end near the phase line. The end of the transfer relay switch away from the power switch is connected in parallel with two wires between it and the third heating plate. One of the wires is equipped with a rectifier diode pointing towards the transfer relay switch, and the other wire is directly connected to the transfer relay switch and the third heating plate.

[0011] Preferably, the third heating plate and the first heating plate are provided with a transfer relay switch at the end near the phase line. The end of the transfer relay switch away from the power switch is connected in parallel with two wires between the third heating plate and the first heating plate. One of the two wires connecting the third heating plate and the two wires connecting the first heating plate is equipped with a rectifier diode pointing towards the transfer relay switch. The other wire is directly connected to the transfer relay switch and the third heating plate, and the transfer relay switch and the first heating plate, respectively.

[0012] Preferably, the first heating plate, the second heating plate, and the third heating plate are connected in parallel. The end of the third heating plate near the phase line is connected to the power switch through a relay switch and a rectifier diode. The rectifier diode is directed towards the phase line.

[0013] More preferably, the ends of the first heating plate and the second heating plate closest to the phase line are connected to the power switch via a relay switch.

[0014] More preferably, a rectifier diode is provided at one end of the first heating plate and the second heating plate near the relay switch; the rectifier diode is directed towards the phase line.

[0015] Preferably, the first heating plate, the second heating plate, and the third heating plate are provided with a rectifier diode and a wire connected in parallel with one end of the relay switch; the rectifier diode is directed towards the phase line.

[0016] Preferably, the main body also includes a rear cover, a body, a top cover, and a furnace liner; the first heating plate, the second heating plate, and the third heating plate are disposed inside the furnace liner.

[0017] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0018] The above technical solution, due to the presence of a power switch in the main body and three parallel heating plates (first, second, and third), with the first and second heating plates connected in series and the third heating plate positioned between and in parallel with the first and second heating plates, and baking spaces provided between the first and third heating plates and between the second and third heating plates, and with the third heating plate having a relay switch and a rectifier diode connected to the power switch at the end of the third heating plate closest to the phase line, and the rectifier diode pointing towards the phase line, achieves a power reduction of half to meet the actual power requirements of the product. This allows the use of heating wires of the same length but with half the resistance per meter and double the cross-sectional area, effectively solving the technical problems of difficult-to-control production processes, short lifespan, and high electrical safety risks in existing technologies. This results in controllable production processes, long product lifespan, and low electrical safety risks. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of an embodiment of the present invention in which a first heating plate and a third heating plate are connected to a relay switch.

[0021] Figure 3 This is a schematic diagram of the structure of an embodiment of the present invention in which a third heating plate is connected to a relay switch via parallel wires and a rectifier diode;

[0022] Figure 4 A schematic diagram of an embodiment in which the first heating plate and the third heating plate are respectively connected to a relay switch via parallel wires and rectifier diodes;

[0023] Figure 5 This is a schematic diagram of an embodiment in which the first heating plate, the second heating plate, and the third heating plate are connected in parallel with a power switch.

[0024] Figure 6 This is a schematic diagram of an embodiment in which a first heating plate, a second heating plate, and a third heating plate are respectively connected to a relay switch;

[0025] Figure 7This is a schematic diagram of an embodiment in which a first heating plate, a second heating plate, and a third heating plate are respectively connected to a relay switch and a rectifier diode;

[0026] Figure 8 This is a schematic diagram of an embodiment in which the first heating plate, the second heating plate, and the third heating plate are respectively connected to a relay switch and a rectifier diode, and the relay switch and the rectifier diode are connected in parallel.

[0027] Figure 9 This is an exploded view of the product of this utility model.

[0028] In the picture, 1. back cover; 2. main body; 3. top cover; 4. furnace liner. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] A toaster, also known as an automatic bread toaster or bread baker, is an electric cooking appliance specifically designed for re-baking sliced ​​bread. A typical toaster consists of three heating wires wound around a mica plate to form a double-slot oven cavity. There are three common wiring methods for these three heating wires: three in series, two in series and one in parallel, and three in parallel. For bagels, which require single-sided baking, the three-in-series method is unsuitable. Using the two-in-series or three-in-parallel methods results in heating wires with high resistance and thin cross-sections, leading to difficulties in controlling the manufacturing process, shorter lifespan, and significant electrical safety risks.

[0031] The technical solution of this application provides a variable power toaster, which solves the problems of difficult production process control, short lifespan, and high electrical safety risks in the prior art. By connecting a rectifier diode in series with the heating wire, it achieves the beneficial effects of controllable production process, long product lifespan, and low electrical safety risks.

[0032] The overall concept of the implementation scheme of this utility model to solve the above-mentioned technical problems is as follows:

[0033] By connecting a rectifier diode in series with the heating wire, the power consumption is halved to meet the actual power requirements of the product. This allows the use of heating wires of the same length but with half the resistance per meter and double the cross-sectional area, effectively solving the aforementioned problems. This achieves single-sided baking for bagels while resolving issues related to manufacturing processes, product lifespan, and electrical safety. It also makes it easier to adjust the heat distribution for browning.

[0034] Furthermore, by integrating with control circuits such as switching relays, high-power and low-power switching can be achieved, giving the product variable power performance and enabling more baking modes, thus enhancing product functionality.

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] A variable power toaster, such as Figure 1 and Figure 9 As shown, the device includes a main body: the main body is equipped with a power switch and three parallel heating plates: a first heating plate (heating plate 1), a second heating plate (heating plate 2), and a third heating plate (heating plate 3); the first heating plate and the second heating plate are connected in series; the third heating plate is disposed between the first heating plate and the second heating plate and is connected in parallel with the first heating plate and the second heating plate; baking spaces are respectively provided between the first heating plate and the third heating plate and between the second heating plate and the third heating plate; wherein, the end of the third heating plate near the phase line is connected to the power switch through a relay switch and a rectifier diode; the direction of the rectifier diode is towards the phase line.

[0037] The main body includes a rear cover, a main body, a top cover, and a furnace liner; the first heating plate, the second heating plate, and the third heating plate are installed inside the furnace liner.

[0038] By connecting a rectifier diode in series with the heating wire (heating plate), the power consumption is halved to meet the actual power requirements of the product. This allows the use of heating wires of the same length but with half the resistance per meter and double the cross-sectional area. This effectively solves the problems of difficult-to-control manufacturing processes, short lifespan, and high electrical safety risks. It achieves single-sided baking for bagels while resolving manufacturing process, lifespan, and electrical safety issues. It also makes it easier to adjust the heat distribution for browning.

[0039] By using a rectifier diode connected in series with the heating wire (heating plate) as a basis, various variable power toasters with different circuit connection structures can be developed:

[0040] like Figure 2 As shown, a relay switch is provided at the end of the first heating plate near the phase line.

[0041] When both relay switches are closed, the two food items (bagels) are baked on both sides.

[0042] When the relay switch of the third heating plate (heating plate 3) is in the open circuit, one side of the food is baked.

[0043] When only one side of a food item needs to be baked, the relay switch of the first heating plate is turned on.

[0044] Furthermore, such as Figure 3 As shown, a transfer relay switch is installed at the end of the third heating plate near the phase line. Two wires are connected in parallel between the end of the transfer relay switch away from the power switch and the third heating plate. One wire has a rectifier diode installed, pointing towards the transfer relay switch. The other wire is directly connected to the transfer relay switch and the third heating plate. This enables single / double-sided baking and power adjustment.

[0045] Furthermore, such as Figure 4 As shown, a transfer relay switch is installed at the end of the third heating plate and the first heating plate near the phase line. Two wires are connected in parallel between the end of the transfer relay switch away from the power switch and the third heating plate and the first heating plate, respectively. A rectifier diode is installed on one of the two wires connecting the third heating plate and the first heating plate, pointing towards the transfer relay switch. The other wire is directly connected to the transfer relay switch and the third heating plate, and to the transfer relay switch and the first heating plate, respectively. This allows for more precise single / double-sided baking and power adjustment.

[0046] In a preferred embodiment, such as Figure 5 As shown, the first, second, and third heating plates are connected in parallel. The end of the third heating plate closest to the phase line is connected to the power switch via a relay switch and a rectifier diode; the rectifier diode is pointed towards the phase line. This design prevents a failure in one heating plate from affecting the others.

[0047] To further refine the control of the heating plate's on / off state, in the above... Figure 5 On the basis of, such as Figure 6 As shown, the ends of the first and second heating plates closest to the phase wire are connected to the power switch via a relay switch. This allows for better control of the opening and closing of each heating plate.

[0048] To further refine the control of the heating plate's on / off state, such as Figure 7 As shown, rectifier diodes are installed at the ends of the first and second heating plates near the relay switch; the rectifier diodes are directed towards the phase line. Each heating plate is connected in parallel with the power switch, and each heating plate is connected to both the relay switch and the rectifier diode.

[0049] The most precise method for controlling the switching of the heating plate is as follows: Figure 8As shown, the first, second, and third heating plates are each connected in parallel with a rectifier diode and a wire to one end of a relay switch; the rectifier diodes point towards the phase line. The power switch connects to the relay switch, and each heating plate is connected to the relay switch via a rectifier diode and a wire, with the diodes and wires connected in parallel. The relay switch allows selection of whether the current flows directly through the heating plate or through the rectifier diode before connecting to the heating plate, thereby adjusting the heating plate power.

[0050] The above implementation methods can achieve switching between high and low power, enabling the product to have variable power performance, realize more baking modes, enhance product functions, and make it easier to adjust the heat distribution for browning.

[0051] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A variable power toaster, comprising a main body, characterized in that: The main body is equipped with a power switch and three parallel heating plates: a first heating plate, a second heating plate, and a third heating plate. The first heating plate and the second heating plate are connected in series. The third heating plate is disposed between the first heating plate and the second heating plate and is connected in parallel with the first heating plate and the second heating plate. Baking spaces are provided between the first heating plate and the third heating plate, as well as between the second heating plate and the third heating plate. The end of the third heating plate near the phase line is connected to the power switch via a relay switch and a rectifier diode. The rectifier diode is directed towards the phase line.

2. The variable power toast oven according to claim 1, characterized in that: A relay switch is provided at the end of the first heating plate near the phase line.

3. The variable power toast oven according to claim 2, characterized in that: The third heating plate is equipped with a transfer relay switch at one end near the phase line. The end of the transfer relay switch away from the power switch is connected in parallel with the third heating plate by two wires. One of the wires is equipped with a rectifier diode pointing towards the transfer relay switch, and the other wire is directly connected to the transfer relay switch and the third heating plate.

4. The variable power toast oven according to claim 3, characterized in that: The third heating plate and the first heating plate are provided with a transfer relay switch at the end near the phase line. The end of the transfer relay switch away from the power switch is connected in parallel with two wires between the third heating plate and the first heating plate. One of the two wires connecting the third heating plate and the first heating plate is equipped with a rectifier diode pointing towards the transfer relay switch. The other wire is directly connected to the transfer relay switch and the third heating plate, and the transfer relay switch and the first heating plate, respectively.

5. The variable power toast oven according to claim 1, characterized in that: The first heating plate is connected in parallel with the second and third heating plates. The end of the third heating plate closest to the phase line is connected to the power switch through a relay switch and a rectifier diode. The rectifier diode is directed towards the phase line.

6. The variable power toast oven according to claim 5, characterized in that: The ends of the first heating plate and the second heating plate closest to the phase line are connected to the power switch via a relay switch.

7. The variable power toast oven according to claim 5, characterized in that: The first heating plate and the second heating plate are provided with rectifier diodes at the ends near the relay switch; the direction of the rectifier diodes is towards the phase line.

8. The variable power toast oven according to claim 5, characterized in that: The first heating plate, the second heating plate, and the third heating plate are connected in parallel with one end of the relay switch, and a rectifier diode and a wire are provided; the direction of the rectifier diode is towards the phase line.

9. The variable power toast oven according to any one of claims 1-8, characterized in that: The main body also includes a rear cover, a body, a top cover, and a furnace liner; the first heating plate, the second heating plate, and the third heating plate are disposed inside the furnace liner.

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