Control method and device for double-variable-capacity heat pump cooling and heating combined system
A technology of cooling and heating combined supply and control method, which is applied in the direction of heating and cooling combination, refrigerator, refrigeration components, etc., which can solve the problems of increasing enterprise operating costs, reducing work efficiency, and not being able to realize intelligent control
Inactive Publication Date: 2017-05-10
JIANGSU TENESUN ELECTRICAL APPLIANCE
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Problems solved by technology
However, traditional temperature control is generally provided by electric heating, steam heating or combustion boilers, and processes that require different temperatures are often realized through different heating methods, which increases the operating costs of enterprises and reduces work. Efficiency, while intelligent control cannot be realized, requiring a lot of manpower input
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Embodiment
[0057] An embodiment of the cooling and heating dual supply and change capacity system of the present invention is aimed at figure 1 Specifically designed for the particularities of the chocolate processing process shown. In this embodiment, the main temperature control area 210 is the packaging workshop, the second temperature control area 220 and the third temperature control area 230 are the second temperature adjustment process room and the third temperature adjustment process room respectively; the raw materials of the production line are mixed Melting, fine grinding, refining, sieving, heat preservation, temperature adjustment, casting, cooling and hardening, and finally packaging into products.
[0058] In view of the cooling and heat requirements of fine grinding, temperature adjustment, casting molding and packaging processes, the cold and hot water subsystem 300 provides 45°C warm water to the fine grinding equipment 310 of the production process line, and according ...
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The invention discloses a control method and device for a double-variable-capacity heat pump cooling and heating combined system and relates to a heating and cooling combined system operating alternately or simultaneously, in particular to a heat pump type cooling and heating combined system control method and device for food processing. The method comprises the following steps that hot and cold water temperature and air supply temperature control parameters are set; hot and cold water temperatures and air supply temperatures of temperature control zones are detected and monitored; and unit operation modes are selected according to the hot and cold water temperature and air supply temperature control parameters. Multi-temperature-control-zone series-connected variable-capacity air supply is realized through setting of the temperature control zones connected in series in the sequence from the low air supply temperature to the high air supply temperature, control on the operating frequency of variable-frequency fans and adjustment of air volumes of the temperature control zones; parallel circulation of refrigerants is realized through a fin type evaporator branch and a cold water production branch, in combination with interactive adjustment of a flow valve and an electronic expansion valve, variable-capacity adjustment of the refrigerants and automatic temperature control in the technological process of production are realized, the system operates stably in a low-consumption manner under different cold and hot loads, and the purpose of high-efficiency and energy-saving operation is achieved.
Description
technical field [0001] The invention relates to a combined heating and cooling system operating alternately or simultaneously, in particular to a heat pump combined cooling and heating system for food processing and a control method for the system. Background technique [0002] In the food processing industry, the food processing process has strict requirements on temperature and humidity. However, the traditional process auxiliary temperature adjustment device is relatively backward. For products that need to be dried, the corresponding heat is supplied by steam heating or fossil fuel combustion (for example: mushroom drying, etc.); for the production process that requires refrigeration, simply use refrigeration devices to meet production needs (for example: deep sea fish processing). by figure 1 The chocolate processing technology shown is an example, and each process has strict requirements on temperature. China's invention patent application "a chocolate continuous t...
Claims
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IPC IPC(8): F25B29/00F25B49/02F25B41/06F25B41/31F25B41/37
CPCF25B29/003F25B49/02F25B2600/25F25B2600/2513F25B41/30Y02B30/70Y02P80/10
Inventor 王玉军吴运运吴小网刘军王颖王天舒杨奕
Owner JIANGSU TENESUN ELECTRICAL APPLIANCE
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