A washing machine steam heating device

Abstract

This utility model provides a steam heating device for a washing machine, including a rubber hose, an inner duct, and an outer duct. The inner duct is installed on the outer duct and also includes a small steam pipe, an inclined steam pipe, and an elbow. One end of the inclined steam pipe is fixedly connected to the small steam pipe, and the other end of the inclined steam pipe is fixedly connected to the elbow. The inclined steam pipe is inclined, and one end of the elbow is fixedly connected to the rubber hose. The rubber hose is distributed in a straight line and also includes a main steam pipe. One end of the small steam pipe is fixedly connected to the inside of the main steam pipe. An outer duct water tank is installed below the outer duct, and one end of the rubber hose is fixedly connected to the inside of the outer duct water tank. This utility model adds an inclined steam pipe and an elbow, and shortens the overall length of the rubber hose to be arranged in a straight line, allowing steam to quickly enter the outer duct water tank, reducing the expansion time of the washing water and steam explosion inside the rubber hose, thereby reducing the maintenance probability of the customer's equipment and increasing the stability of the customer's washing equipment.

Description

Technical Field

[0001] This utility model relates to the field of laundry drum technology, specifically to a laundry drum steam heating device. Background Technology

[0002] The washing machine, also known as a tunnel-type continuous washing machine, is suitable for large-scale continuous washing operations of towels, bath towels, sheets, duvet covers, pillowcases, etc. in large-scale laundry factories such as hotels and hospitals. It is combined with weighing conveyors, press-type dewatering machines, shuttle conveyors and through-type dryers to form a high-efficiency washing system. It is a customized product for customers. From the initial design stage, the functional areas, number of compartments and piping systems of the washing machine can be arranged according to the user's requirements such as the type of linen, washing process, washing volume and washing efficiency. It can complete the classification, washing and drying processes of linens according to different batches and different customers. It can also be extended to the post-processing system of linens to complete ironing, folding, packing and other applications.

[0003] The existing washing machine steam pipe consists of a main steam pipe, a small steam pipe, an angle seat valve, a connector, a rubber hose, a silencer, and an outer duct water tank. Steam enters the small steam pipe from the main steam pipe, and through the angle seat valve, it flows through the connector, rubber hose, and connector into the outer duct water tank. Under the conditions that meet the washing process requirements, steam is injected into the inner duct of the washing machine through the angle seat valve. The temperature of the washing water in the inner duct is measured by a temperature sensor, which controls the opening and closing of the angle seat valve. The rubber hose withstands the high temperature and high pressure of the steam. At this time, the high temperature and high pressure steam comes into rapid contact with the washing water in the outer duct water tank, causing expansion inside the rubber hose. This makes the rubber hose relatively easy to damage, which is not conducive to the normal washing performance and also wastes customer costs. Utility Model Content

[0004] The purpose of this invention is to provide a steam heating device for a washing machine to solve the problems mentioned in the background art.

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

[0006] A washing machine steam heating device includes a rubber tube, an inner duct, and an outer duct. The inner duct is installed on the outer duct. The device also includes a small steam pipe, an inclined steam pipe, and an elbow. One end of the inclined steam pipe is fixedly connected to the small steam pipe, and the other end of the inclined steam pipe is fixedly connected to the elbow. The inclined steam pipe is inclined. One end of the elbow is fixedly connected to the rubber tube, and the rubber tube is distributed along a straight line.

[0007] Preferably, it also includes a main steam pipe, with one end of the small steam pipe fixedly connected to the inside of the main steam pipe.

[0008] Preferably, an outer duct water tank is installed below the outer duct, and one end of the rubber tube is fixedly connected to the inside of the outer duct water tank.

[0009] Preferably, a temperature sensor is installed inside the outer water tank, and a silencer is installed between the rubber tube and the outer water tank.

[0010] Preferably, an angle seat valve is installed between the small steam pipe and the inclined steam pipe.

[0011] Preferably, the elbow and the rubber tube are fixedly connected by a joint.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model adds an inclined steam pipe and an elbow, and shortens the overall length of the rubber hose to a straight line, allowing steam to quickly enter the outer water tank. This reduces the expansion time of the washing water and steam explosion inside the rubber hose, thereby reducing the maintenance probability of the customer's equipment and increasing the stability of the customer's washing equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front connection structure between the rubber tube and the inner duct in the prior art;

[0015] Figure 2 This is a schematic diagram of the side connection structure between the rubber tube and the inner duct in the prior art;

[0016] Figure 3 This is a schematic diagram of the front connection structure between the rubber tube and the inner duct of this utility model;

[0017] Figure 4 This is a schematic diagram of the side connection structure between the rubber tube and the inner duct of this utility model.

[0018] In the diagram: 1. Main steam pipe; 2. Small steam pipe; 3. Angle seat valve; 4. Rubber hose; 5. Connector; 6. Silencer; 7. External duct water tank; 8. Temperature sensor; 9. Internal duct; 10. External duct; 11. Inclined steam pipe; 12. Elbow. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-2 This is the structural composition of the outer dragon and the inner dragon in the existing technology.

[0021] Please see Figure 3-4This utility model provides a washing machine steam heating device, including a rubber tube 4, an inner tube 9 and an outer tube 10. The inner tube 9 is installed on the outer tube 10. It also includes a small steam tube 2, an inclined steam tube 11 and an elbow 12. One end of the inclined steam tube 11 is fixedly connected to the small steam tube 2, and the other end of the inclined steam tube 11 is fixedly connected to the elbow 12. The inclined steam tube 11 is inclined. One end of the elbow 12 is fixedly connected to the rubber tube 4. The rubber tube 4 is distributed in a straight line.

[0022] Please see Figure 3 and Figure 4 One end of the inclined steam pipe 11 is fixedly connected to the small steam pipe 2, and the sealing is usually ensured by flange connection or welding. The other end of the inclined steam pipe 11 is fixedly connected to the elbow 12, and the inclined steam pipe 11 is set at an angle. This angle is carefully calculated and is usually between 30° and 60° to optimize the steam flow state. One end of the elbow 12 is fixedly connected to the rubber pipe 4, which is distributed in a straight line. This layout avoids the bending arrangement of the rubber pipe in the traditional scheme and significantly reduces stress concentration. It also includes the main steam pipe 1, and one end of the small steam pipe 2 is fixedly connected to the inside of the main steam pipe 1 to form the main steam supply trunk. Below the outer duct 10, an outer duct water tank 7 is installed to hold washing water and exchange heat with steam. One end of the rubber tube 4 is fixedly connected to the inside of the outer duct water tank 7 to ensure that steam can directly enter the water tank and mix with the washing water. A temperature sensor 8 is installed inside the outer duct water tank 7 to monitor the water temperature in real time and provide feedback to the control system. A silencer 6 is installed between the rubber tube 4 and the outer duct water tank 7 to effectively reduce the noise generated when steam is injected. An angle seat valve 3 is installed between the small steam pipe 2 and the inclined steam pipe 11 as a key control element for steam on / off. A connector 5 is fixedly connected between the elbow 12 and the rubber tube 4 to ensure a reliable and sealed connection.

[0023] It also includes a main steam pipe 1, one end of a small steam pipe 2 is fixedly connected to the inside of the main steam pipe 1, an outer duct water tank 7 is installed below the outer duct 10, one end of a rubber pipe 4 is fixedly connected to the inside of the outer duct water tank 7, a temperature sensor 8 is installed inside the outer duct water tank 7, a silencer 6 is installed between the rubber pipe 4 and the outer duct water tank 7, an angle seat valve 3 is installed between the small steam pipe 2 and the inclined steam pipe 11, and a connector 5 is fixedly connected between the elbow 12 and the rubber pipe 4.

[0024] Please see Figure 3 and Figure 4The inclined steam pipe 11 is typically made of high-temperature and high-pressure resistant stainless steel. Its inclination angle is calculated using fluid dynamics to effectively reduce steam velocity, decrease flow resistance, and prevent drastic expansion and contraction of steam within the pipe. One end of the inclined steam pipe 11 is fixedly connected to the small steam pipe 2, with a reinforced flange seal at the connection to ensure reliable sealing under high-temperature and high-pressure conditions. The other end of the inclined steam pipe 11 is fixedly connected to the elbow 12, which typically employs a long-radius elbow design to further reduce local resistance to steam flow. The linear distribution of the rubber hose 4 significantly distinguishes it from traditional designs. The straight arrangement of the rubber hose 4 results in uniform internal stress distribution, avoiding thermal stress concentration at bends and facilitating installation and maintenance. The rubber hose 4 is made of high-temperature and pressure-resistant special rubber material and may contain an internal reinforcing fiber layer to further enhance pressure resistance. Standardized interfaces are used for all connections in the piping system to ensure interchangeability and ease of maintenance between components. The selection of the angle seat valve 3 must consider the highest operating pressure and temperature to ensure reliability under harsh conditions. The temperature sensor 8 installed inside the outer water tank 7 typically uses a Pt100 platinum resistance thermometer or a thermocouple, and its measurement accuracy directly affects the temperature control effect. The signal from the temperature sensor 8 is transmitted to the control system via a cable, forming a closed-loop control circuit with the angle seat valve 3. The silencer 6 installed between the rubber hose 4 and the outer water tank 7 is made of porous sound-absorbing material, which can effectively reduce the high-frequency noise generated during steam injection and improve the working environment. The internal structure of the silencer 6 is specially designed to minimize steam pressure loss while reducing noise. The connector 5 that connects the elbow 12 and the rubber hose 4 typically uses a quick-connect or flange design for easy disassembly and maintenance. The layout of the entire system fully considers thermal expansion compensation, and expansion joints or flexible connections are set at key parts to avoid equipment damage caused by thermal stress.

[0025] Working Principle: By introducing an inclined steam pipe 11 and optimizing the pipeline layout, the steam flow characteristics are significantly improved, reducing the workload of the rubber hose 4. Steam enters the small steam pipe 2 from the main steam pipe 1, and then enters the inclined steam pipe 11 after being controlled by the angle seat valve 3. The inclined setting of the inclined steam pipe 11 effectively buffers the steam flow, reducing turbulence and impact. Subsequently, the steam smoothly enters the rubber hose 4 through the elbow 12 and the connector 5. Since the rubber hose 4 adopts a straight distribution, unnecessary bending stress is avoided. Finally, the steam enters the outer water tank 7 through the silencer 6 and mixes with the washing water. The temperature sensor 8 monitors the water temperature in real time and provides feedback to control the opening and closing of the angle seat valve 3. This improved design significantly reduces the steam expansion impact inside the rubber hose 4, extends its service life, and ensures the normal operation of the washing process.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laundry dragon steam heating device comprising a rubber tube (4), an inner dragon (9) and an outer dragon (10), the inner dragon (9) is installed on the outer dragon (10), characterized in that, It also includes a small steam pipe (2), an inclined steam pipe (11) and an elbow (12). One end of the inclined steam pipe (11) is fixedly connected to the small steam pipe (2), and the other end of the inclined steam pipe (11) is fixedly connected to the elbow (12). The inclined steam pipe (11) is set at an inclination. One end of the elbow (12) is fixedly connected to a rubber tube (4). The rubber tube (4) is distributed along a straight line.

2. The washing machine steam heating device according to claim 1, characterized in that, It also includes a main steam pipe (1), one end of which is fixedly connected to the inside of the main steam pipe (1).

3. The washing machine steam heating device according to claim 1, characterized in that, An outer dragon water tank (7) is installed below the outer dragon (10), and one end of the rubber tube (4) is fixedly connected to the inside of the outer dragon water tank (7).

4. A steam heating device for a washing machine according to claim 3, characterized in that, A temperature sensor (8) is installed inside the outer water tank (7), and a silencer (6) is installed between the rubber tube (4) and the outer water tank (7).

5. A steam heating device for a washing machine according to claim 1, characterized in that, An angle seat valve (3) is installed between the small steam pipe (2) and the inclined steam pipe (11).

6. A steam heating device for a washing machine according to claim 1, characterized in that, The elbow (12) and the rubber tube (4) are fixedly connected by a joint (5).

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