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A group control system of ground source heat pump

A ground-source heat pump and ground-source side technology, which is applied in heat pumps, lighting and heating equipment, refrigeration safety arrangements, etc., can solve the problems of different unit life spans and unbalanced unit running time, etc., to achieve improved service life and accurate temperature Effect of controlling and reducing energy consumption

Active Publication Date: 2019-05-03
挪信能源技术(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When multiple ground source heat pumps are running, the running time of each unit cannot be balanced, resulting in different life spans of the units

Method used

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  • A group control system of ground source heat pump
  • A group control system of ground source heat pump
  • A group control system of ground source heat pump

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing.

[0020] see figure 1 and figure 2 , a ground source heat pump group control system of the present invention includes multiple parallel ground source heat pump units, two user-side water pumps 3, 3', a user-side standby water pump 4 (user-side standby water pump), two ground Source side water pumps 5, 5', a ground source side backup water pump 6 (ground source side backup water pump), at least one hot water circulation pump 7, a return water temperature sensor 8 and an outdoor temperature sensor 9.

[0021] In this case, the maximum number of online ground source heat pump units is eight; the eight ground source heat pump units 21-28 are respectively connected to the user-side supply and return water main pipe 100 through the user-side water supply and return branch pipes, and the eight ground source heat pump units 21-28 The water supply and return main pipe 200 on the us...

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Abstract

The invention discloses a group control system of ground source heat pumps. The group control system of ground source heat pumps comprises multiple ground source heat pump units, a user side water pump, a ground source side water pump, at least one user side standby water pump, at least one ground source side standby water pump, a return water temperature sensor and an outdoor temperature sensor, wherein the multiple ground source heat pump units are connected in parallel and each provided with a PLC controller. The multiple ground source heat pump units are connected with a user side supply and return water main and a ground source side supply and return water main. All the PLC controllers are connected through signal lines and constitute a PLAN, and data communication is achieved. One ground source heat pump unit is set as a main unit, and the other ground source heat pump units are auxiliary units. A group control mode is set in the PLC controller of each ground source heat pump unit, and an effective start command of the PLC controller of each ground source heat pump unit is local start plus group control start. According to the group control system of the ground source heat pumps, the requirements for energy level subdivision and accurate temperature control can be met through coordination of start and stop of all the units constituting the local area network and the number of needed compressors, and variable-flow operation of the heat pumps is achieved.

Description

technical field [0001] The invention relates to a group control system of a ground source heat pump. Background technique [0002] For the ground source heat pump room with multiple (three and above), there is a lack of a reliable group control method, which leads to the existing ground source heat pump room, relying on simple timing switch and water pump control unit to realize the machine room Management, the water pump is in a long-term running state, and the water pump on the ground source side cannot automatically adjust the flow rate, and the output capacity of the machine room only depends on the energy level subdivision of the unit itself, which cannot well respond to changes in the user-side load. When the extremely small load state is caused, the energy consumption of the computer room is still very large. When multiple ground source heat pumps are running, the running time of each unit cannot be balanced, resulting in different life spans of the units. Contents...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/06F25B49/02
CPCF25B30/06F25B49/02
Inventor 沈建刚
Owner 挪信能源技术(上海)有限公司
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