Test method for return air superheat of multi-connected system and multi-connected system
A multi-connection system, return air superheat technology, applied in the field of multi-connection system, can solve problems such as high cost and insufficient test accuracy, and achieve the effect of avoiding liquid hammer phenomenon, improving reliability, and ensuring safe and reliable operation.
Active Publication Date: 2017-12-08
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology
However, when testing the superheat of the part of the refrigerant passing through the recooler, the test accuracy is not enough, and the cost is still high
Method used
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Embodiment Construction
[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0028] The method for testing the return air superheat of the multi-line system and the multi-line system according to the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0029] Such as figure 2 As shown, the multi-split system in one embodiment of the present invention includes an outdoor unit 10, an indoor unit 20 (there may be multiple indoor units), a distribution device MS and a control module (not shown in the figure). Wherein, the shunt device MS includes a reco...
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The invention discloses a method for testing the return air superheat degree of a multi-line system, wherein the multi-line system includes a recooling circuit composed of a first heat exchanger and a second heat exchanger, a first temperature sensor, and a second temperature sensor and a third temperature sensor, the return air superheat test method includes the following steps: acquiring a first temperature value detected by the first temperature sensor, a second temperature value detected by the second temperature sensor, and a third temperature value detected by the third temperature sensor; Obtaining the minimum value between the first temperature value and the second temperature value, and obtaining the maximum value between the third temperature value and the second temperature value; and calculating the degree of superheat according to the minimum value and the maximum value. The return air superheat test method all uses temperature sensors to accurately test the refrigerant superheat at the outlet of the recooling circuit, so as to ensure that the refrigerant entering the compressor will not appear in a liquid state, and also greatly reduce the cost. The invention also discloses a multi-line system.
Description
technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method for testing the return air superheat of a multi-connection system and a multi-connection system. Background technique [0002] The heat recovery multi-line system can use the condensation heat and evaporation heat of the refrigeration system at the same time, thereby greatly improving the energy utilization efficiency, and has a broad market prospect. Among them, the two-pipe multi-connection system is a heat recovery system composed of high-pressure pipes and low-pressure pipes connecting the outdoor unit and the distribution device MS. MS can distribute gas and liquid refrigerants to indoor units in rooms with different needs, so as to meet the cooling or heating requirements of different rooms. [0003] In order to prevent the high-pressure liquid refrigerant from flashing when it is transported to the indoor unit, it is necessary to have sufficient subcooli...
Claims
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IPC IPC(8): F24F11/00F24F11/02
CPCF24F11/89F24F2110/00F24F11/30F24F2140/20F25B2313/0231F25B2600/2509F25B2313/006F25B2500/28F25B2600/02F25B2700/21151F25B13/00F25B41/20F25B49/02F24F11/00F25B2700/2102F25B2400/13G01K13/026F25B49/022F25B2400/05F25B2500/19F25B2600/0253F25B2600/21F25B2700/2101F25B2700/2103G01K3/08G01K13/02
Inventor 罗彬李元阳
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD