JPH02127190U

JPH02127190U -

Info

Publication number: JPH02127190U
Application number: JP3316189U
Authority: JP
Priority date: 1989-03-27
Filing date: 1989-03-27
Publication date: 1990-10-19

Description

[Brief explanation of drawings]

第１図は本考案に用いられる乾燥室の天井を省
いた概略を示す斜視図、第２図は乾燥室の平面図
、第３図は第２図のＡ−Ａ断面図、第４図乃至第
７図は本考案の低温乾燥装置を示す冷凍回路であ
つて、同時に各種の運転状態を示す回路図、第８
図は各切換弁の開閉状態を示す制御動作一覧表、
第９図は本考案の低温乾燥装置による各運転の一
通りのパターン例を示した運転状況グラフである
。図にて、１……乾燥室、６……被処理室、１９
……フアン、２０……冷却イル、３０，３０Ａ，
３０Ｂ……再熱コイル、４０，４０Ａ，４０Ｂ…
…室外凝縮器、５０……圧縮器、５２ａ……再熱
コイルバイパス管路、５２ｃ……凝縮器バィパス
管路、６１〜７２……切換弁、７４……除霜用バ
イパス管路、７５……水槽、７６……加温用管路
を示す。 Fig. 1 is a perspective view schematically showing the drying chamber used in the present invention without the ceiling, Fig. 2 is a plan view of the drying chamber, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Figs. Fig. 7 is a refrigeration circuit showing the low temperature drying device of the present invention, and a circuit diagram showing various operating states.
The figure shows a control operation list showing the open/close status of each switching valve.
FIG. 9 is an operation status graph showing one example of each operation pattern by the low temperature drying apparatus of the present invention. In the figure, 1... Drying room, 6... Processing chamber, 19
...Fan, 20...Cooling oil, 30, 30A,
30B...Reheating coil, 40, 40A, 40B...
...Outdoor condenser, 50...Compressor, 52a...Reheat coil bypass line, 52c...Condenser bypass line, 61-72...Switching valve, 74...Defrosting bypass line, 75... ...water tank, 76...indicates a heating pipe.

Claims

[Scope of claims for utility model registration] (1) The evaporator of the refrigeration cycle is a cooling coil,
a drying chamber in which a part of the condenser is used as a reheating coil, and air is circulated from the cooling coil to the processing chamber by a fan through the reheating coil; and a drying chamber installed outside the drying chamber and downstream of the reheating coil. It consists of a connected outdoor condenser, and a control means that controls switching of the switching valve or starting/stopping of the drive source of the refrigeration cycle according to outputs from each temperature and humidity sensor in the processing chamber. , each of the reheating coil and the outdoor condenser is divided into two or more mutually parallel parts via a dedicated switching valve,
In addition, bypass pipes each having a switching valve for bypassing the reheating coil and the outdoor condenser are provided in parallel with each other, and the control means is used to maintain each of the insides of the treatment chamber lower than the set temperature and humidity. A low-temperature drying device for foods, wherein the operating ratio of the reheating coil and the outdoor condenser is changed by each switching valve. (2) In the drying chamber, a cooling coil and a reheating coil are arranged in series in this order in an air flow path separated from the processing chamber, and the refrigeration cycle is connected directly to the compressor via a switching valve. The defrosting pipe consists of a defrosting bypass pipe that flows hot gas to the cooling coil, and a heating pipe that runs parallel to the refrigeration cycle pipe and inside the hot water tank downstream of the cooling coil via a switching valve. 2. The low temperature drying apparatus according to claim 1, further comprising a passage.