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Heat pump type dishwasher and control method thereof

A dishwasher and heat pump technology, applied to the heat pump dishwasher and its control field, can solve the problems of low suction pressure of the compressor, affecting the life of the compressor, unfavorable rapid rise of the heat pump load, etc., and achieves high heating efficiency, The effect of good heating effect

Active Publication Date: 2019-04-30
QINGDAO HAIER DISHWASHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the initial operation of the compressor, the suction pressure of the compressor is too low, and the circulation volume of the heat pump working medium is too small, which is not conducive to the rapid increase of the heat pump load
Moreover, the suction pressure of the compressor is too low, and the lubricating oil discharged with the heat pump working fluid cannot be circulated back to the compressor in time for replenishment when the compressor is turned on, resulting in poor lubrication of the compressor and affecting the life of the compressor

Method used

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  • Heat pump type dishwasher and control method thereof
  • Heat pump type dishwasher and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a heat pump dishwasher in this embodiment uses a heat pump system to heat washing water. The heat pump system includes an evaporator 8 and an air supply device 12 for driving air to flow through the evaporator. The filter device at the front of the windward side of the evaporator 8 is used to filter the air flowing through the evaporator.

[0028] The heat pump dishwasher of this embodiment uses a filtering device at the front of the windward side of the evaporator 8, so that the air flowing through the evaporator 8 for heat exchange is filtered to prevent impurities from adhering to the fins of the evaporator 8 Affect the heat exchange efficiency of the evaporator 8. Therefore, the heat pump dishwasher in this embodiment can ensure the heat exchange efficiency of the evaporator 8, so that the heating efficiency of the heat pump system is higher and has a better heating effect.

[0029] Specifically, the heat pump dishwasher in this embodime...

Embodiment 2

[0041] Such as figure 2 As shown, a heat pump dishwasher in this embodiment uses a heat pump system to heat the washing water. The heat pump system includes an evaporator 8 and a water collecting device arranged at the bottom of the evaporator 8 for collecting condensed water of the evaporator. 11. It also includes a condensed water evaporation device 14 arranged in the water collecting device 11 for accelerating the evaporation of condensed water.

[0042] While the evaporator 8 of the heat pump dishwasher of this embodiment absorbs the heat of the air, the moisture in the air will drop due to the temperature, and condensed water will be generated on the fins of the evaporator, which will drop to the water collecting device 11 at the bottom of the evaporator due to gravity. superior. In order to increase the evaporation rate of condensed water, a condensed water evaporation device 14 is provided, which is made of hydrophilic material, and the bottom contacts the water colle...

Embodiment 3

[0053] This embodiment provides a control method for a heat pump dishwasher as described in Embodiment 2. The dishwasher starts to heat the washing water, and the heat pump system starts to work. When the water level of the condensed water detected by the water level detection device exceeds the set value , then control the air supply device to open or increase the speed of the air supply device.

[0054] The set value in this embodiment may include two set values: the first set value and the second set value. When the water level detected by the water level detection device exceeds the first set value, if the air supply device is not turned on, it is controlled to be turned on. If the air supply device has been turned on, then speed up the operation speed of the air supply device, so as to accelerate the evaporation of condensed water and avoid excessive condensed water.

[0055] When the water level detected by the water level detection device exceeds the second set value, t...

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Abstract

The invention provides a heat pump type dishwasher and a control method thereof. The heat pump type dishwasher adopts a heat pump system to heat washing water, the heat pump system comprises an evaporator and an air supply device used for driving air to flow through the evaporator, and the heat pump system further comprises a filtering device arranged on the front portion of a windward side of theevaporator and used for filtering the air flowing through the evaporator. The filtering device is arranged at the front portion of the windward side of the evaporator, thus, after air flowing throughthe evaporator for heat exchange is filtered, impurities are prevented from adhering to fins of the evaporator to affect the heat exchange efficiency of the evaporator, and therefore the heat pump type dishwasher has the advantages that the heat exchange efficiency of the evaporator is guaranteed, the heating efficiency of the heat pump system is higher, and a good heating effect is achieved.

Description

technical field [0001] The invention relates to the technical field of dishwashing equipment, in particular to a heat pump dishwasher and a control method thereof. Background technique [0002] Dishwashers are equipment used to automatically clean tableware such as bowls, chopsticks, plates, plates, knives, forks, etc. According to the structure, they can be divided into two categories: box type and conveyor type. It reduces labor intensity, improves work efficiency, and improves cleanliness and sanitation for the cooks in restaurants, hotels, and canteens of government agencies. Now, a variety of small dishwashers are on the market and are gradually entering ordinary families. [0003] Existing dishwashers all use heating tubes for the dishwasher. The heating tubes are built into the water tank at the bottom of the liner. When washing, the heating tubes are used for heating, and the circulating water pump is used to circulate water to wash the tableware. But this method c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47L15/00A47L15/42
CPCA47L15/0028A47L15/4285Y02B40/00
Inventor 宋华诚许升杨林刘凯
Owner QINGDAO HAIER DISHWASHER
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