Freezing and refrigerating device as well as control method and control device thereof
A technology of refrigeration device and reversing device, which is used in household refrigeration devices, refrigeration and liquefaction, coolers, etc., can solve problems such as frosting of heat exchangers, and achieve the effect of maintaining refrigeration temperature and ensuring refrigeration effect.
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Embodiment 1
[0048] This embodiment provides a freezer-refrigerator that can simultaneously cool the refrigerator, cool the freezer, and adjust the indoor temperature. Such as Figure 1 to Figure 4 As shown, the freezing and refrigerating device includes: an outdoor unit 1 , an air conditioner indoor unit 2 , a refrigerated showcase 3 and a refrigerated showcase 4 . The refrigerated showcase 4 includes at least two connected heat exchangers. In order to distinguish it from the heat exchanger of the air-conditioning internal unit and the heat exchanger of the refrigerated showcase, the above-mentioned at least two heat exchangers can be called heat exchangers of the refrigerated showcase, Recorded as 411, 412, ... 41n, n represents the number of heat exchangers in the refrigerated showcase.
[0049] The outdoor unit 1 mainly includes: a first compressor 111 , a third compressor 112 , an outdoor heat exchanger 13 and an outdoor fan 14 . The number of the first compressor 111 is at least on...
Embodiment 2
[0079] This embodiment provides a control method for a freezer and refrigerator, which can be applied to the freezer and refrigerator described in Embodiment 1 above, such as Figure 5 As shown, the method includes the following steps:
[0080] S501. Receive a defrosting instruction.
[0081] S502. Control the bypass pipeline to communicate with the exhaust port of the first compressor and the first port of the refrigerated showcase.
[0082] S503, controlling at least two heat exchangers of the refrigerated showcase to defrost in rotation.
[0083] In the control method of this embodiment, in the defrosting mode, the high-temperature and high-pressure gaseous refrigerant discharged from the first compressor can directly enter the refrigerated showcase by using the bypass pipeline, and at least two heat exchangers of the refrigerated showcase are controlled to conduct Rotational defrosting, so as to realize the rapid defrosting of the heat exchanger of the refrigerated displ...
Embodiment 3
[0104] Combine below Figure 6A to Figure 15 The above-mentioned refrigerating device and its control method will be described in detail, however, it should be noted that this specific embodiment is only for better illustrating the present application, and does not constitute an improper limitation of the present application. Explanations of terms that are the same as or corresponding to those in the foregoing embodiments will not be repeated in this embodiment.
[0105] (1) For the case of the connection mode 1 of the heat exchanger of the refrigerated display cabinet
[0106] In this embodiment, taking the refrigerated display cabinet including three heat exchangers (411, 412 and 413) as an example, the flow direction of the refrigerant in the heating mode and the defrosting mode is described.
[0107] Such as Figure 6A As shown, in the heating mode, the refrigerant discharged from the first compressor 111 is split. Part of the refrigerant passes through the first four-w...
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