Centrifugal compressor and heat pump system

Abstract

The invention discloses a centrifugal compressor and a heat pump system. The centrifugal compressor comprises a motor and a compression part. The motor comprises a motor shell and a motor shaft arranged in the motor shell. The compression part is arranged at the axial end of the motor and comprises an impeller, a driven shaft and a coupler, the driven shaft is connected with the impeller, and the coupler is connected with the motor shaft and the driven shaft so that the motor can drive the impeller to rotate. According to the centrifugal compressor, the driven shaft connected with the impeller is additionally arranged, and the motor shaft and the driven shaft are coaxially connected through the coupler, so that the axial distance between the motor and the impeller is increased, the heat transfer distance of airflow heat is increased, and heat transferred to the motor can be reduced, the main bearing of the motor operates in a normal temperature range, and the operation reliability of the compressor is improved.

Description

technical field

[0001] The present application relates to a centrifugal compressor and heat pump system. Background technique

[0002] A heat pump is an energy-saving device that uses high-level energy to make heat flow from a low-level heat source to a high-level heat source. It not only has the ability to improve energy grades, but also has the advantages of mature technology, safety, reliability, and simple implementation. Therefore, it is widely used in civil fields. .

[0003] At present, the air source heat pump technology with an outlet water temperature of 55°C or below is very mature and occupies a dominant position in the market. This type of heat pump can basically meet the needs of domestic hot water in conventional residences and commercial buildings and a few industrial hot water; In the field of application, the heating temperature requirements are mostly higher than those for residential use, so traditional residential heat pumps cannot meet the needs of the...

Examples

Embodiment Construction

[0024] 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. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0025] The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes...

technical field

[0001] The present application relates to a centrifugal compressor and heat pump system. Background technique

[0002] A heat pump is an energy-saving device that uses high-level energy to make heat flow from a low-level heat source to a high-level heat source. It not only has the ability to improve energy grades, but also has the advantages of mature technology, safety, reliability, and simple implementation. Therefore, it is widely used in civil fields. .

[0003] At present, the air source heat pump technology with an outlet water temperature of 55°C or below is very mature and occupies a dominant position in the market. This type of heat pump can basically meet the needs of domestic hot water in conventional residences and commercial buildings and a few industrial hot water; In the field of application, the heating temperature requirements are mostly higher than those for residential use, so traditional residential heat pumps cannot meet the needs of the...

Examples

Embodiment Construction

[0024] 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. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0025] The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes...

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