Heat Pump Dryer Layout for Condensate Drainage and Efficiency
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Solution Overview
Problem
Conventional heat pump washer-dryers face challenges in efficiently discharging condensate water due to limited space, making it inconvenient and less energy-efficient.
Innovation Solution
The design includes an obliquely arranged evaporator and upright condenser within a casing, with a water reserving portion or drainage hole below the evaporator, allowing for efficient condensate water discharge and maintaining high energy efficiency, utilizing micro-channel heat exchangers and a streamlined air guiding structure to optimize heat exchange and airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the heat pump system components (compressor, evaporator, condenser) are arranged at the bottom of the laundry drying device to utilize available space, then the device volume is reduced and space utilization is improved, but the condensate water discharge becomes inconvenient and energy efficiency decreases
Solution Approach 1:
The evaporator is changed from a conventional horizontal arrangement to an oblique arrangement within the casing, creating a three-dimensional spatial configuration that enables condensate water to flow downward along the inclined surface to the water reserving portion. This dimensional change resolves the contradiction by maintaining compact device volume while establishing a gravity-driven water discharge path that improves operational convenience.
Solution Approach 2:
The casing is designed with differentiated local structures: a water reserving portion positioned at a specific location to collect condensate water, and a drainage hole configured for efficient water discharge. These localized structural modifications enable effective condensate management without compromising the overall compact design of the heat pump system.
2Ease of operation
If the evaporator is arranged horizontally to facilitate condensate water collection, then water discharge is improved, but the heat exchange efficiency and energy efficiency ratio decrease
Solution Approach 1:
The evaporator transitions from a purely horizontal arrangement to an oblique arrangement, creating a downward slope that enables gravity-driven condensate water flow to the water reserving portion. This oblique configuration maintains effective heat exchange surface area while establishing natural water drainage, thereby improving energy efficiency ratio without sacrificing water discharge convenience.
3Volume of moving object
If the drying system is designed to be compact with limited space, then device volume is reduced, but the arrangement of heat pump components becomes difficult and condensate water discharge is hindered
Solution Approach 1:
The water reserving portion and drainage hole are integrated into the casing structure itself, merging the water collection and discharge functions with the housing. This integration eliminates the need for separate external water management components, simplifying the overall device structure while maintaining compact volume and effective condensate discharge capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables convenient condensate water discharge and maintains high energy efficiency, allowing the drying system to be compact while achieving improved energy efficiency ratios compared to conventional electrical heating systems.
Implementation Method 1
an electrical-heating water condensation type drying system, an electric-heating wind condensation type drying system
Implementation Method 2
a heat pump heating type drying system using evaporator condensation and condenser heating
Implementation Method 3
The evaporator is a micro-channel heat exchanger and includes at least two headers, a plurality of flat tubes, and a plurality of fins
Data Source
AI summary
A drying system and a laundry drying device are provided. The drying system includes a compressor, a draught fan, a casing, a throttling device, an evaporator and a condenser. The condenser and the evaporator are relatively fixedly arranged inside the casing, and the evaporator is obliquely arranged inside the casing; an inner space of the casing at least includes a first space at one side of the evaporator, a second space between the evaporator and the condenser, and a third space at another side of the condenser; a bottom portion of the casing is provided with a water reserving portion or a drainage hole, and the casing has a high point A at a portion where the condenser is arranged and a high point B at a portion where the evaporator is arranged, and the high point A is substantially same as the high point B.