A dishwasher
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heat pump dishwashers face inefficiencies in energy consumption and drying performance, particularly when ambient air temperature is insufficient, leading to suboptimal washing and drying outcomes.
Innovation Solution
The dishwasher incorporates a heat pump system with a first heat exchanger, a second heat exchanger, and a compressor, where a water pipe circulates water through the first heat exchanger, enhanced by fins for increased heat absorption, and aided by a fan for forced convection and heaters to boost water temperature, along with heat insulating materials to maintain temperature, optimizing heat transfer from the environment to the washing water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an air type evaporator is used to absorb heat from ambient air, then the evaporator can operate without water, but the heating efficiency decreases when ambient air temperature is insufficient
Solution Approach 1:
The evaporator is divided into two independent types: water-type evaporator and air-type evaporator. The system can select which type to use based on ambient conditions, allowing each segment to excel in its optimal operating scenario.
Solution Approach 2:
The system dynamically switches between water-type and air-type evaporators based on ambient air temperature conditions. When ambient temperature is sufficient, the air-type evaporator is used; when insufficient, the water-type evaporator is activated to maintain heating efficiency.
2Use of energy by moving object
If a heat pump system is used to heat washing liquid, then energy consumption decreases, but drying performance becomes insufficient when ambient temperature is low
Solution Approach 1:
The system changes the operating parameters of the heat pump based on ambient temperature. When ambient temperature is low, the system adjusts by using the water-type evaporator with higher heat absorption capacity, and may activate supplementary heating to maintain the required temperature for effective drying.
3Device complexity
If the evaporator absorbs heat from ambient air, then the system structure is simplified, but the washing and drying performance decreases when ambient air temperature is not sufficient
Solution Approach 1:
The evaporator system is segmented into water-type and air-type configurations. This segmentation allows the system to maintain simple structure by using the air-type evaporator under normal conditions, while switching to the water-type evaporator only when performance requirements demand it due to low ambient temperature.
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 reduces energy consumption and enhances drying performance by efficiently heating washing water using ambient heat, achieving faster heating and improved drying results while maintaining energy efficiency.
Implementation Method 1
a first heat exchanger (5) enabling the water to be used in the washing step to be heated by drawing heat from the environment
Implementation Method 2
The first heat exchanger enables the water used in the washing process to be heated by absorbing heat from the environment
Implementation Method 3
a second heat exchanger (6) transferring the heat received from the first heat exchanger (5) to the washing water
Implementation Method 4
the compressor (7) fluidly connected to the first heat exchanger (5) and the second heat exchanger (6) so as to realize the refrigerant cycle
Implementation Method 5
the dishwasher comprises a plurality of fins arranged on the first heat exchanger and the water pipe arranged in the vicinity of the fins. By means of the fins, the surface area of the first heat exchanger is increased and more heat is enabled to be absorbed from the environment
Implementation Method 6
the dishwasher comprises a fan that enables the ambient air and the hot air generated around the water pipe to be delivered to the fins. The ambient air is blown towards the fins by means of the fan
Implementation Method 7
the dishwasher comprises a first heater that enables the water tank to be heated. The first heater is arranged in the water tank
Implementation Method 8
the dishwasher comprises the water pipe that is provided with heat insulating materials. Thus, the water moving from the water tank towards the first heat exchanger is prevented from cooling down
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a dishwasher (1) comprising a body (2); a washing tub (3) arranged in the body (2) and wherein the washing process is performed; at least one water tank (4) arranged between the washing tub (3) and the body (2) and wherein the excess water (S) is collected; and a heat pump (8) that is arranged under the washing tank (3) and that has a first heat exchanger (5) enabling the water to be used in the washing step to be heated by drawing heat from the environment, a second heat exchanger (6) transferring the heat received from the first heat exchanger (5) to the washing water and a compressor (7) fluidly connected to the first heat exchanger (5) and the second heat exchanger (6) so as to realize the refrigerant cycle.