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Dehumidifying and drying heat pump system fused with compressor driving type pseudo-loop heat pipe

A heat pump system and compressor technology, applied in heat pumps, dryers, dryers, etc., can solve the problems of lack of direct drive means, difficulty in guaranteeing application effects, poor economy, etc., so as to increase the proportion of latent heat and increase Large dehumidification energy efficiency, the effect of increasing the dehumidification capacity

Active Publication Date: 2022-03-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a passive heat exchange system, the loop heat pipe is different from the active heat exchange of the refrigeration heat pump system. It lacks the means of direct drive and needs to be self-driven by gravity and capillary force. The actual application effect is often difficult to guarantee
If driven by power components such as refrigerant pumps, the price is expensive and the economy is not good

Method used

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  • Dehumidifying and drying heat pump system fused with compressor driving type pseudo-loop heat pipe
  • Dehumidifying and drying heat pump system fused with compressor driving type pseudo-loop heat pipe
  • Dehumidifying and drying heat pump system fused with compressor driving type pseudo-loop heat pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] For a dehumidification and drying heat pump system incorporating a compressor-driven quasi-loop heat pipe in this embodiment, see figure 1 , mainly including compressor 1, condenser 2, condensation reheating section 3, throttle valve 4, evaporator 5, auxiliary throttle valve 6, evaporative precooling section 7 and fan 8.

[0049] In this embodiment, an air injection enthalpy-increasing compressor 1 with an intermediate air supply port is used, or a two-stage compression form in which two compressors are connected in series.

[0050] In this embodiment, the refrigerant flowing out from the condensation reheating section 3 is divided into two parts, one of which is throttled by the throttle valve 4 to a lower saturation temperature and then enters the evaporator 5, absorbs heat and evaporates from the air flowing through it, and then enters the compressor. machine 1; the other one is throttled to a higher saturation temperature by the auxiliary throttle valve 6 and then e...

Embodiment 2

[0056] For a dehumidification and drying heat pump system incorporating a compressor-driven quasi-loop heat pipe in this embodiment, see image 3 , the main difference from Embodiment 1 lies in the arrangement of the refrigerant flow path.

[0057] In this embodiment, the high-temperature and high-pressure refrigerant at the outlet of the compressor 1 is directly divided into two, one of which is condensed by the condenser 2 to release heat to the air flowing through it, and then throttled by the throttle valve 4 to a low saturation temperature before entering the evaporator 5. After absorbing heat and evaporating from the passing air, it enters the compressor 1; the other way enters the condensing and reheating section 3 to condense and reheat the passing air, and then enters after throttling to a higher saturation temperature through the auxiliary throttle valve 6. The evaporative precooling section 7 enters the intermediate air supply port of the compressor 1 after absorbin...

Embodiment 3

[0061] The structure schematic diagram of this embodiment can be found in Figure 5 , the basic principle is consistent with that of Embodiment 1. Compared with Embodiment 1, the air flow path in this embodiment is not provided with the second air branch 11 for bypassing mixed air, so the condensation reheating section 3 in Embodiment 1 can be combined with the condenser 2, and the refrigerant Condensation and subcooling are all completed in the condenser 2 (the end of the refrigerant channel in the condenser 2 is the subcooling section). At this time, the evaporation precooling section 7 and the refrigerant subcooling section in the condenser 2 constitute a compressor-driven quasi-loop heat pipe in the present invention, which realizes the heat exchange effect of the air before and after the evaporator 5 . This form has a compact structure and high component integration, which is very suitable for application scenarios with limited installation space.

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Abstract

The invention relates to a dehumidifying and drying heat pump system fused with a compressor driving type quasi-loop heat pipe, which comprises a refrigerant circulating flow path and an air flow path, and the refrigerant circulating flow path comprises a compressor, a condenser, a condensation reheating section, a throttle valve and a refrigerant flow path of an evaporator which are connected in sequence; the dehumidifying and drying heat pump system integrating the compressor driving type quasi-loop heat pipe further comprises an evaporation pre-cooling section connected into the refrigerant circulating flow path. The air flow path comprises an evaporation pre-cooling section, an evaporator, a condensation reheating section and a first air branch of a condenser which are connected in sequence, the evaporation pre-cooling section is used for pre-cooling air return, and the condensation reheating section is used for reheating air return. Compared with the prior art, through the effect of the compressor driving type quasi-loop heat pipe, heat exchange of air fluid in front of and behind the evaporator is achieved, useless cooling effect sensible heat carried by air at an inlet of the evaporator is reduced, the proportion of latent heat corresponding to dehumidification in the total refrigerating capacity is increased, and therefore the dehumidification amount is increased, and the dehumidification energy efficiency is improved.

Description

technical field [0001] The invention relates to a vapor compression heat pump dehumidification and drying system, in particular to a dehumidification and drying heat pump system integrated with a compressor-driven quasi-loop heat pipe. Background technique [0002] The refrigeration heat pump cycle system can be used to replace the traditional electric heating system, greatly reduce power consumption, and promote energy saving and emission reduction and carbon neutral goals. [0003] Compared with solution dehumidification and solid adsorption dehumidification, when the refrigeration heat pump circulation system is used for dehumidification and drying, it has compact structure, stable operation and convenient maintenance. However, the cooling and dehumidification method adopted by the refrigeration heat pump circulation system needs to cool the air to a temperature lower than the dew point first, and then make the air condense to achieve dehumidification. This part of the s...

Claims

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Application Information

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IPC IPC(8): F26B21/08F25B30/02
CPCF26B21/086F25B30/02Y02B30/52
Inventor 成家豪曹祥张春路
Owner TONGJI UNIV
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