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Water chilling unit with self freeze-proofing function

A chiller and functional technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of unusable circulating pump, high system operating cost, high circulating pump power, etc., to prevent freezing danger and reduce antifreeze energy. consumption effect

Inactive Publication Date: 2011-03-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the circulation pump of the existing chiller is turned on during antifreeze operation, the power of the circulation pump is large, resulting in waste of energy, high operating costs of the system, and the circulation pump cannot be used for other aspects when the unit is shut down , proposed a chiller with self-antifreeze function

Method used

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  • Water chilling unit with self freeze-proofing function
  • Water chilling unit with self freeze-proofing function
  • Water chilling unit with self freeze-proofing function

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 To illustrate this embodiment, the water chiller of this embodiment includes a compressor 1, a condenser 2, a first outlet pipeline 2-1, a throttle valve 3, an evaporator 4, a second outlet pipeline 4-1, a first water pipe Road temperature sensor 5 and the second water pipeline temperature sensor 6, the refrigerant outlet of the evaporator 4 communicates with the inlet of the compressor 1, the outlet of the compressor 1 communicates with the refrigerant inlet of the condenser 2, and the condensing The refrigerant outlet of the device 2 communicates with the refrigerant inlet of the evaporator 4 through the throttle valve 3, and the chiller also includes a first antifreeze circulating water pump 7, a second antifreeze circulating water pump 8, a first heating cable 9, a second heating cable Heat belt 10, first check valve 11, second check valve 12, third check valve 13 and fourth check valve 14, the cooling water outlet ...

specific Embodiment approach 2

[0010] Specific implementation mode two: combination figure 1 This embodiment will be described. The first water pipeline temperature sensor 5 of this embodiment is a thermocouple or a thermistor sensor.

specific Embodiment approach 3

[0011] Specific implementation mode three: combination figure 1 Describe this embodiment, the second water pipeline temperature sensor 6 of this embodiment is a thermocouple or a thermistor sensor.

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Abstract

The invention provides a water chilling unit with the self freeze-proofing function, relating to water chilling units. The invention aims at solving the following problem: circulating pumps are started to operate when the current water chilling units carry out freeze-proofing and the circulating pumps have large power and high system operating cost, cause energy waste and can not be used in otheraspects when the units shut down. A condenser is communicated with a first check valve and a second check valve respectively. The second check valve is communicated with a first freeze-proof circulating water pump. The first freeze-proof circulating water pump is communicated with a first water pipe temperature sensor. The first water pipe temperature sensor is communicated with the condenser. Anevaporator is communicated with a third check valve and a fourth check valve respectively. The fourth check valve is communicated with a second freeze-proof circulating water pump. The second freeze-proof circulating water pump is communicated with a second water pipe temperature sensor. The second water pipe temperature sensor is communicated with the evaporator. The water chilling unit is used in the multi-heat source heat supply or multi-cold source cold supply systems, or in the common single heat source or single cold source systems.

Description

technical field [0001] The invention relates to a chiller. Background technique [0002] Chillers are designed with two important circulation systems. One is the freon circulation system inside the system, through which cooling or heat is transferred; the other is the water circulation system, through which the cooling or heat generated by the unit is taken away. When the unit is running in the cooling state, the operating temperature of the water circulation system on the evaporator side is in a low state, especially when the unit is shut down, if the water circulation system is turned off, the circulating water stored in the unit will freeze, causing the evaporator to freeze and crack . Therefore, it is very important to prevent the freezing of water in the water circulation system of the unit when it is shut down. [0003] At present, the chillers on the market mainly adopt the following protection measures: when the chiller is shut down, the internal water pipeline te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/00
Inventor 姜益强柴永金姚杨董建锴
Owner HARBIN INST OF TECH
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