Wet film type low-temperature full heat recovery multi-connected heat pump unit
A technology of total heat recovery and heat pump units, which is applied in the direction of superheaters, refrigerators, compressors, etc., can solve the problems of non-recyclable heat, low refrigeration efficiency, high energy consumption of cooling water pumps, etc., to achieve efficient refrigeration and heating operations, Improve refrigeration efficiency and solve the effect of serious fouling
Pending Publication Date: 2019-01-18
HANRUN UNITED HIGH TECH DEV BEIJING CO LTD
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Problems solved by technology
[0007] Among them, although evaporative cooling can efficiently cool, but the heating efficiency is not high in the environment with low temperature and the fouling is serious; although the multi-connected heat pump can heat, the cooling efficiency in summer is lower than that of the evaporative cooling unit; low efficiency
The cooling effect of the water-cooled unit is good, but it needs an additional cooling tower in the machine room, resulting in a waste of space due to repeated construction of the machine room, high investment in the length of the cooling pipe network, high energy consumption of the cooling water pump, high cooling water consumption of the cooling tower, and no heating in winter
Therefore, the cooling efficiency of multi-connected units is lower than that of evaporative cooling units and water-cooling units in summer; the heating efficiency is low in winter and the use in low temperature and cold areas is limited
[0008] Moreover, the heat discharged from the compressor cannot be recycled, further causing energy consumption
Method used
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[0055] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0056] Please refer to Figure 1-Figure 7 and Figure 15 , Figure 16 and Figure 17 , the embodiment of the present invention provides a wet-film low-temperature total heat recovery multi-connected heat pump unit, including a compressor 1, a heat recovery device 51, a first four-way valve 6, a second four-way valve 7, and a third four-way valve Valve 8, outdoor heat exchange unit, indoor heat exchange unit 4, liquid reservoir 15, first expansion valve 18, first check valve 19, second check valve 22, main check valve 20, auxiliary check valve 21 , the first solenoid valve 24, the second solenoid valve 12, the third solenoid valve 11 and the fourth solenoid valve 13;
[0057] The compressor 1 has a return port and an o...
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The invention provides a wet film type low-temperature full heat recovery multi-connected heat pump unit, wherein the indoor heat exchange unit is a multi-connected indoor unit or a shell-and-tube heat exchanger; The outdoor heat exchange unit comprises a water-cooled heat exchanger, an air-cooled heat exchanger connected with the water-cooled heat exchanger, a fan for allowing air to flow throughthe air-cooled heat exchanger, a wet film heat exchanger, a spray device for spraying cooling water to the wet film heat exchanger, a spray water pump connected with the spray device, a cooling watertank positioned below the wet film heat exchanger and supplying water to the spray water pump, and a spray pipeline communicating the spray device with the spray water pump; The water-cooled heat exchange pipeline of the water-cooled heat exchanger is connected to the spray pipeline, and the refrigerant heat exchange pipeline of the water-cooled heat exchanger is connected to the refrigerant pipeline of the wet film type low-temperature air-cooled heat pump multi-connection unit; The other end of the heat recovery device is communicated with the other end of the outdoor heat exchange unit through a third electromagnetic valve, and the other end of the heat recovery device is communicated with the other end of the indoor heat exchange unit through a fourth electromagnetic valve. Realize efficient cooling and heating and reduce energy consumption.
Description
technical field [0001] The invention relates to the technical field of heat pumps, in particular to a wet-film low-temperature full heat recovery multi-connected heat pump unit. Background technique [0002] At present, air-conditioning cooling technology can be divided into three forms: [0003] 1. Air-cooled unit: use the temperature difference between the refrigerant steam in the condenser and the outdoor ambient air to liquefy the refrigerant through the fin heat exchanger to reduce the temperature of the refrigerant——use the heat exchange between the outdoor ambient air and the refrigerant steam to cool the refrigerant; [0004] 2. Water-cooled unit: use the cooling water obtained from the cooling tower to liquefy the refrigerant steam in the shell-and-tube (casing-tube) heat exchanger to reduce the temperature of the refrigerant——the refrigerant is cooled by heat exchange between cooling water and refrigerant steam ; [0005] 3. Evaporative cooling unit: expose the c...
Claims
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IPC IPC(8): F25B13/00F25B41/04F25B41/06F25B43/00F25B40/06F25B41/20F25B41/31
CPCF25B13/00F25B40/06F25B43/00F25B41/31F25B41/20
Inventor 李国斌
Owner HANRUN UNITED HIGH TECH DEV BEIJING CO LTD