CN-121989630-A - Control system for air conditioning equipment in air conditioning refrigerator car

CN121989630ACN 121989630 ACN121989630 ACN 121989630ACN-121989630-A

Abstract

The invention relates to the technical field of air-conditioning refrigeration, in particular to a control system for air-conditioning equipment in an air-conditioning refrigerator car, which comprises a carriage, air-conditioning equipment, a plurality of transport cases, an acquisition unit and a control unit, wherein the opening of each transport case is provided with an air hole with an electrically controllable adjustment, the control unit acquires characteristic gas concentration data of each transport case before air supply to judge concentration differences, when preset difference conditions are met, the air-conditioning equipment is controlled to be switched from fixed-direction air supply to multidirectional sequential air supply according to preset sequences, in the air supply process, the opening adjustment strategy of the air hole of each transport case is determined based on concentration change trend within a period meeting preset consistency conditions, and meanwhile, the air supply track when air-conditioning requirements are switched is determined according to the concentration change trend, so that the adjustment of air-conditioning uniformity among the transport cases is realized. The occurrence of uneven air conditioning effect can be reduced, so that the probability that the goods in part of the transport boxes deviate from the target air conditioning environment in advance is reduced.

Inventors

MENG WEIKANG
MENG ZHENGXUAN
XIAO HONGHAI

Assignees

上海康帅冷链科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260410

Claims (10)

1. A control system for air conditioning equipment in an air conditioning refrigerator car comprises a carriage, air conditioning equipment arranged in the carriage, a plurality of transport boxes arranged in the carriage and used for placing goods, and an acquisition unit arranged in each transport box and used for acquiring the concentration of characteristic gas, Each transport case is provided with an air vent with an electronically controlled opening degree; The control system for the air conditioning equipment in the air conditioning refrigerator car further comprises: A control unit that receives the concentration of the characteristic gas before the start of the gas supply to determine a concentration difference of the characteristic gas between the transport tanks; the control unit is configured to switch the air supply direction of the air conditioning equipment to enable the fixed direction air supply to be adjusted to supply air to the plurality of air supply directions in sequence according to a preset sequence when the concentration difference meets a preset difference condition; in the sequential air supply process, collecting concentration change trend of each transport case in a period when the air supply direction and the ventilation holes thereof meet preset consistency conditions, and formulating an opening adjustment strategy of the ventilation holes of each transport case after air supply is finished according to the concentration change trend so as to correct concentration difference of characteristic gases among the transport cases; The control unit is further configured to determine an air supply trajectory of the air conditioning apparatus at the time of air conditioning demand switching based on a concentration variation trend of the transportation box in a period in which the air supply direction and the ventilation hole thereof satisfy preset consistency conditions.
2. The control system for an air conditioning apparatus in an air conditioning refrigerator car according to claim 1, wherein a single one of the transport cases includes an air vent plate, a movable shielding plate, and a driving member; The movable shielding plate is attached to the vent hole plate and can be connected with the vent hole plate in a sliding manner, so that the effective flow area of the vent hole plate can be changed; The driving piece is connected with the control unit and used for driving the movable shielding plate to act so as to control the vent hole to adjust to the target opening.
3. The control system for an air conditioning apparatus in an air conditioning refrigerator car according to claim 1, wherein the control unit is configured to execute a procedure of determining an opening degree adjustment strategy of the vent hole of each of the transport boxes after the air supply is finished: Determining the response degree of each transport box to the current air supply direction based on the concentration change trend of each transport box in the corresponding time period; Comparing the response degree of each transport box with the characteristic gas concentration after the air supply is finished, and determining a target correction amount corresponding to each transport box; determining an opening adjustment strategy of the corresponding transport case according to the target correction quantity; The opening adjustment strategy comprises that the vent hole is switched from the current opening to the increased opening, the vent hole is switched from the current opening to the decreased opening and the current opening is maintained.
4. A control system for an air conditioning apparatus in an air conditioning refrigerator car according to claim 3, wherein the control unit is configured to perform the following procedure to determine the air delivery trajectory of the air conditioning apparatus at the time of air conditioning demand switching: And recording the air supply direction of the vent hole corresponding to the transport case with the standard response degree meeting the preset consistency condition, so that the air supply track comprises the recorded air supply direction.
5. The control system for an air conditioning apparatus in an air conditioning refrigerator car according to claim 1, wherein the control unit sets a preset difference condition as: Determining the maximum value and the minimum value of the concentration of the characteristic gas in each transport case; determining a concentration difference between the maximum value and the minimum value; and determining that the concentration difference reaches a preset difference value as the preset difference condition.
6. The control system for an air conditioning apparatus in an air conditioning refrigerator car according to claim 1, wherein the preset consistency condition of the control unit is determined by the following procedure: determining the included angle between the normal direction of the vent hole of the single transport case and the current air supply direction; and determining that the air supply direction and the vent hole meet the preset consistency condition according to a judging result that the included angle is not larger than a preset angle.
7. The control system for an air conditioning apparatus in an air conditioning refrigerator car according to claim 2, wherein the vent plate, the movable shielding plate and the driving member are configured in two groups, which are respectively disposed at opposite sides of the transport case.
8. The control system for an air conditioning apparatus in an air conditioning refrigerator car according to claim 7, wherein the control unit is provided with a passive air conditioning strategy and an active air conditioning strategy for a single transport box; the passive air regulation strategy is to adjust the opening of the vent holes at two sides of the transport case so as to adjust the concentration of the characteristic gas in the transport case.
9. The control system for an air conditioning apparatus in an air conditioning refrigerator car according to claim 8, wherein the control unit executes the active air conditioning strategy to control the air conditioning apparatus to actively feed air to the transport box when the passive air conditioning strategy cannot maintain the air conditioning demand of the goods in the transport box.
10. The control system for an air conditioning apparatus in an air conditioning refrigerator car according to claim 1, wherein the collection unit includes an RFID tag and a gas concentration sensor, and the concentration data is transmitted to the control unit after being read and written by the RFID tag.

Description

Control system for air conditioning equipment in air conditioning refrigerator car Technical Field The invention relates to the technical field of air-conditioning refrigeration, in particular to a control system for air-conditioning equipment in an air-conditioning refrigerator car. Background Compared with the traditional refrigerator car, the air-conditioned refrigerator car can control the air composition in the cargo compartment, greatly prolongs the fresh-keeping time, and effectively controls the air-conditioned refrigerator car is a precondition for guaranteeing the quality of goods. The Chinese patent publication No. CN106766519A discloses a refrigerating and freezing device and an air-conditioning fresh-keeping control method thereof, wherein the refrigerating and freezing device comprises a box body limiting a storage space, an air-conditioning fresh-keeping system and a refrigerating system, wherein a closed air-conditioning fresh-keeping subspace is formed in the storage space, the air-conditioning fresh-keeping system comprises an air-conditioning membrane component and an air pump, the air pump is configured to enable air in the air-conditioning fresh-keeping subspace to permeate through the air-conditioning membrane component so as to form an air atmosphere beneficial to food fresh-keeping in the air-conditioning fresh-keeping subspace of the storage space, the refrigerating system is configured to provide cold for the storage space, the fresh-keeping control method comprises the steps of acquiring a fresh-keeping operation identifier set according to an operation event of the refrigerating and judging whether the air-conditioning fresh-keeping system meets preset starting conditions when the fresh-keeping operation identifier is used for allowing the air-conditioning fresh-keeping system to operate, and starting the air-conditioning fresh-keeping system to regulate the air in the air of the air-conditioning fresh-keeping subspace when the starting conditions are met. Some goods such as mushroom which are not easy to store can not be fully exposed under the modified atmosphere, meanwhile, a certain modified atmosphere is needed, the fixation of the goods in the transportation process is ensured, the goods are placed in the transportation box with the vent holes in part of scenes, so that the modified atmosphere can effectively act on the goods, but due to the differences of closed space of a goods box and goods placement, partial deterioration condition of the goods caused by uneven modified action exists in the transportation. Disclosure of Invention Therefore, the control system for the air-conditioning equipment in the air-conditioning refrigerator car can effectively reduce the occurrence probability of partial goods deterioration caused by the non-uniform air-conditioning effect in transportation due to the space sealing of the goods compartment and the goods placement difference by combining the cooperative control of the air-conditioning equipment through the electronically-controlled adjustable improvement of the opening of the vent hole. In order to achieve the above purpose, the invention provides a control system for an air conditioning device in an air conditioning refrigerator car, which comprises a car, an air conditioning device arranged in the car, a plurality of transport boxes arranged in the car and used for placing goods, a collection unit arranged in each transport box and used for collecting the concentration of characteristic gas, and a control unit, wherein each transport box is provided with an air vent with an opening which can be adjusted electrically; a control unit is arranged to receive the concentration of the characteristic gas before the start of gas supply so as to determine the concentration difference of the characteristic gas between the transport tanks; The control unit is configured to switch the air supply direction of the air regulating device to enable the air supply in the fixed direction to be regulated to supply air to the plurality of air supply directions in sequence according to a preset sequence when the concentration difference meets a preset difference condition; The control unit is further configured to determine an air supply trajectory of the air conditioning apparatus at the time of air conditioning demand switching based on a concentration variation trend of the transportation box in a period in which the air supply direction and the ventilation hole thereof satisfy preset consistency conditions. As a preferred technical scheme of the control system for the air conditioning equipment in the air conditioning refrigerator car, each transport case comprises an air vent plate, a movable shielding plate and a driving piece; The movable shielding plate is attached to the vent hole plate and can be connected with the vent hole plate in a sliding manner, so that the effective flow area of the vent hole plate can be changed; The driving piece is