Air source heat pump unit

A technology of air source heat pumps and units, applied in refrigerators, refrigeration components, mechanical equipment, etc., can solve the problems of frequent defrosting, large heating attenuation, water temperature fluctuations, etc., to reduce the frequency of defrosting, optimize the defrosting process, The effect of improving the heating effect

Active Publication Date: 2022-05-06
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides an air source heat pump unit to solve the problems of frequent defrosting, large heating attenuation, low heating efficiency, and water temperature fluctuations caused by the separate defrosting of each system of the existing air source heat pump unit with dual systems and common fans. technical problem

Method used

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0031] In the description of this application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying Refe...

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Abstract

The invention relates to an air source heat pump unit which comprises a first refrigerant circulation system and a second refrigerant circulation system, the first refrigerant circulation system comprises a first outdoor heat exchanger, the second refrigerant circulation system comprises a second outdoor heat exchanger, and the first outdoor heat exchanger and the second outdoor heat exchanger share an outdoor fan. The control module is configured to judge whether the other refrigerant circulation system meets the interlocking defrosting condition or not when receiving a defrosting signal of any refrigerant circulation system, and perform interlocking defrosting control on the first refrigerant circulation system and the second refrigerant circulation system when the other refrigerant circulation system meets the interlocking defrosting condition. And when the other refrigerant circulation system does not meet the interlocking defrosting condition, time-sharing defrosting control is conducted on the first refrigerant circulation system and the second refrigerant circulation system. The control mode of combining double-system interlocking defrosting and time-sharing defrosting is adopted, the defrosting process is optimized, the two systems can be reconciled to synchronously conduct heating and defrosting to the maximum extent, the defrosting frequency is reduced, and the heating effect is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning systems, in particular to an air source heat pump unit. Background technique [0002] When the air source heat pump unit is in heating operation in winter, the finned heat exchanger will be frosted, and the more frost the unit has, the greater the attenuation of the heating capacity of the unit. Therefore, when the frost builds up to a certain extent, the unit needs to defrost to maintain the heating capacity and energy efficiency of the unit. When defrosting, the refrigeration system stops heating, and the fan also stops running. [0003] For air source heat pump units with dual systems and common fans, the heating and operating states of the two systems are not completely consistent, so the amount of frosting is different. When one system needs defrosting, the other system may or may not need defrosting. However, when any system is defrosting, all outdoor fans will stop running, becau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42F24F11/65F24F11/64F24F11/61F25B49/02F25B47/02
CPCF24F11/42F24F11/65F24F11/64F24F11/61F25B49/02F25B47/02Y02B30/70
Inventor 禹志强丛辉刘敬坤吕振鹏
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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