wet clothes dryer: design & fabrication

MN 302Fabrication Project

Wet Clothes DryerGROUP 34

Abhinav Gupta, 2011001

Harshit Shukla, 2011052

Jatin Gupta, 2011058

Pranjal Nautiyal, 2011104

Piyush Agarwal, 2011206

INTRODUCTION

PROBLEM

It becomes very difficult to dry wet clothes in rainy season, specially in very high humidity areas. Techniques like washing machine dryer, ironing, laundry hydro have limitations like high cost, power inefficient, time consuming etc.

OBJECTIVE

The project aims to fabricate a low cost, durable, user-friendly, time efficient and low power consuming product for drying clothes in humid weather and rainy areas for both households and commercial sectors.

CONCEPT

Boiling point of water is a function of pressure. Suction is created using pump/ blower, reducing the chamber pressure, causing the wet clothes to dry at considerably low temperature.

EMBODIMENT DESIGN

PRODUCT ARCHITECTURE

COMPONENTS

Cabinet Body

Pump/ Blower

Digital Display

Control Panel

Heating filament

ARRANGEMENT OF ELEMENTS

Product consists of a closed cabinet.

Wet clothes, to be dried, are kept in the cabinet

The cabinet has a seal-pack type door.

From the top wall of the cabinet arise suction pipe, from where blower sucks the air from inside of the chamber.

There is a separate upper cabinet (not seal packed), where pump and circuit are placed. The front part has LCD display and control panel.

CONFIGURATIONAL DESIGN

Inner body of STAINLESS STEEL: Water resistant, high temp tolerant and robustManufacturing Mode: Welding, Screws, Riveting

Outer body of WOOD: Light Weight, robust and easy to manufactureManufacturing Mode: Nails, Carpentry Operations

Material Selection

CLOTHES CHAMBER

• Rectangular chamber sub-divided into two isolated sub-chambers

• Seal packed doors

PRESSURE REDUCTION SYSTEM

• Network of pipes opening into sub-chambers

• Pipes connected to pump for air suction

ELECTRONIC CIRCUIT & HEATING SYSTEM

• Heating filament in both sub-chambers

• Electrical Circuit: Efficient power switching

CONTOL & DISPLAY

• Control Panel for ON/OFF, fabric mode

• Display to show selections made

Modules of Product

Electrical Circuit

PARAMETRIC DESIGN

Final Dimensions and Tolerances

Cost Parameters

Rs. 4375

DETAILED DESIGN

Outer Case Inner Chambers

Door of Subchambers Heating Filament Condenser

Pipes and Joints

Pipe Connected Pipes Four pipe joint

U- joint Five Pipe Joint T-Joint

HUMAN FACTORS Cognitive Load:

- Too many controls and displays avoided- Semi-automated design: Taking too many inputs from users avoided- Colour Coding: More than 3 colours avoided- Feedback System : LCD display

Cultural Stereotype: Bright and blooming colours preferred

Anthropometric DimensionsHandle Door ClearanceHandle height

- 95th percentile male finger tip breadth=17mm- Handle height = 4*17= 68 mm

- 95th percentile finger tip depth=15 mm- Therefore, Handle Door Clearance=15mm

Questions & Comments

THANK YOU