Variable air volume terminal air supply module and cruise ship refrigeration air conditioning and ventilation system thereof

Abstract

The application provides a variable air volume terminal air supply module and a cruise ship refrigeration air conditioning and ventilation system, the variable air volume terminal air supply module comprises a module body which is a cavity constructed by thermal insulation material, wherein the module body has an air inlet and an air outlet; an air volume regulator is arranged in the cavity and used for adjusting the air volume of air entering from the air inlet and discharged through the air outlet; an electric heating coil is arranged in the cavity; a temperature sensor is used for measuring the temperature in the cavity; a controller is arranged in the cavity, the controller is used for controlling the air volume of the air volume regulator and controlling the temperature of the electric heating coil according to the temperature measured by the temperature sensor. The air volume and temperature are controlled by the air volume regulator, the inlet and outlet air is controlled, the ventilation of the cruise ship refrigeration air conditioner is met, and the technical problem that there is a lack of ventilation system for the medical center of a large cruise ship is solved.

Description

Technical fields: This invention relates to the field of ventilation technology, and in particular to a variable air volume terminal air supply module and its air conditioning and ventilation system for cruise ship cold storage. Background technology: Large cruise ship medical centers are designed to address sudden respiratory illnesses or seasickness in passengers and crew. Therefore, compared to public areas such as restaurants, medical centers have much stricter controls over air temperature, humidity, and air quality.

[0001] Therefore, this paper proposes an air conditioning and ventilation system for a large cruise ship medical center. Through intelligent temperature and air volume adjustment at the air supply terminal, the system performs secondary treatment on the fresh air processed by the air conditioner, eliminating the influence of the humidification and heating process in the ductwork between the air conditioner and the medical center. Simultaneously, an air filter is added to the exhaust duct. The filter screen efficiently filters particulate matter from the air, and an ultraviolet sterilization device blocks the spread of bacteria and viruses. Furthermore, the filter screen is removable for easy cleaning and replacement.

[0002] Therefore, there is an urgent need for a variable air volume terminal air supply module and its cruise ship cold storage air conditioning and ventilation system, which would help solve the technical problem of lack of ventilation systems for large cruise ship medical centers. Summary of the Invention: In one embodiment, the present invention provides a variable air volume terminal air supply module, which controls the air volume and temperature through an air volume regulator, controls the air intake and exhaust, meets the ventilation requirements of cruise ship cold storage air conditioning, and helps to solve the technical problem of lack of ventilation systems for large cruise ship medical centers.

[0003] The variable air volume terminal air supply module includes: A module body, which is a cavity constructed with thermal insulation material, wherein the module body has an air inlet and an air outlet; An air volume regulator is disposed in the cavity and is used to regulate the air volume that enters from the air inlet and is discharged through the air outlet. An electric heating coil is disposed within the cavity; A temperature sensor is used to measure the temperature inside the cavity; A controller is disposed within the cavity, the controller being used to control the airflow of the airflow regulator and to control the temperature of the electric heating coil based on the temperature measurement of the temperature sensor.

[0004] In one embodiment, the air volume regulator has variable air volume blades, and the air volume is changed by adjusting the variable air volume blades through the controller.

[0005] In one embodiment, the present invention also provides a cruise ship cold storage air conditioning ventilation system with a variable air volume terminal air supply module, the cruise ship cold storage air conditioning ventilation system comprising: A medical center that has the aforementioned variable air volume terminal air supply module.

[0006] In one embodiment, the cruise ship cold storage air conditioning and ventilation system further includes: An air conditioning station, wherein the air conditioning station is equipped with: A circulation system is formed in which fresh air enters the circulation system, passes through the variable air volume terminal air supply module, flows out of the variable air volume terminal air supply module, and then flows back to the circulation system of the air conditioning station.

[0007] In one embodiment, the circulatory system includes: The system is connected in series via pipelines to a damper, air filter, cooling coil, supply air section temperature sensor, heating coil, supply fan, pressure sensor, and, after the variable air volume terminal supply air module, differential pressure sensor, exhaust air section temperature sensor, exhaust fan, and damper at the air conditioning station.

[0008] In one embodiment, the fresh air entering the air conditioning station is 35°C and 70% fresh air.

[0009] In one embodiment, the fresh air entering the variable air volume terminal air supply module has a temperature of 14°C and a humidity of 100%.

[0010] In one embodiment, when the room temperature is below 22°C, the actuator of the variable air volume device does not start, at which time the terminal air supply volume is at its minimum, and the power of the heating coil is adjusted to its maximum to regulate the room temperature to rise steadily. When the room temperature is between 22-23.5℃, the power of the heating coil gradually decreases, and the actuator of the variable air volume device does not start. When the room temperature reaches 23.5℃, the heating coil is turned off. When the room temperature is between 23.5-24℃, this temperature range is set as a dead zone.

[0011] In one embodiment, the variable air volume device and heating coil in the system are repeatedly started, while neither is started.

[0012] In one embodiment, when the temperature is between 24-25°C, the heating coil is turned off, and the actuator of the variable air volume device gradually opens to the maximum. At this time, the terminal air supply volume is at its maximum, ensuring that the temperature gradually returns to the set temperature range. Attached image description: Figure 1 This is a schematic diagram of a variable air volume terminal air supply module with heating in one embodiment of the present invention; Figure 2 This is a side view of a variable air volume terminal air supply module with heating element according to another embodiment of the present invention; Figure 3 This is a schematic diagram of the air conditioning and ventilation system for a large cruise ship cold storage facility, as shown in another embodiment of the present invention. Figure 4 This is a schematic diagram of airflow regulation of the terminal air supply module in another embodiment of the present invention; Figure 5 This is a schematic diagram of the electric heater and actuator command signals in another embodiment of the present invention. Detailed implementation method: The technical problem to be solved by the present invention is to provide an air conditioning and ventilation system for a large cruise ship medical center. The system uses a heated air supply module at the air supply terminal to perform secondary treatment on the air after it has been treated by the air conditioning system, based on the temperature and humidity of the cabin air, so that the temperature regulation of the room is more precise. The system also uses an air filter with an ultraviolet sterilization device to block the spread of bacteria and viruses.

[0013] Figure 1 This is a schematic diagram of a variable air volume terminal air supply module with heating in one embodiment of the present invention; Figure 2 This is a side view of a variable air volume terminal air supply module with heating element according to another embodiment of the present invention; Figure 3 This is a schematic diagram of the air conditioning and ventilation system for a large cruise ship cold storage facility, as shown in another embodiment of the present invention. Figure 4 This is a schematic diagram of airflow regulation of the terminal air supply module in another embodiment of the present invention; Figure 5 This is a schematic diagram of the electric heater and actuator command signals in another embodiment of the present invention.

[0014] like Figures 1 to 5 As shown, in one embodiment, the present invention provides a variable air volume (VAV) terminal air supply module, the VAV terminal air supply module comprising: A module body, which is a cavity constructed with thermal insulation material, wherein the module body has an air inlet and an air outlet; An air volume regulator is disposed in the cavity and is used to regulate the air volume that enters from the air inlet and is discharged through the air outlet. An electric heating coil is disposed within the cavity; A temperature sensor is used to measure the temperature inside the cavity; A controller is disposed within the cavity, the controller being used to control the airflow of the airflow regulator and to control the temperature of the electric heating coil based on the temperature measurement of the temperature sensor.

[0015] In one embodiment, the air volume regulator has variable air volume blades, and the air volume is changed by adjusting the variable air volume blades through the controller.

[0016] In one embodiment, the present invention also provides a cruise ship cold storage air conditioning ventilation system with a variable air volume terminal air supply module, the cruise ship cold storage air conditioning ventilation system comprising: A medical center that has the aforementioned variable air volume terminal air supply module.

[0017] In one embodiment, the cruise ship cold storage air conditioning and ventilation system further includes: An air conditioning station, wherein the air conditioning station is equipped with: A circulation system is formed in which fresh air enters the circulation system, passes through the variable air volume terminal air supply module, flows out of the variable air volume terminal air supply module, and then flows back to the circulation system of the air conditioning station.

[0018] In one embodiment, the circulatory system includes: The differential pressure sensor 10, located at the air conditioning station, is connected in series via pipelines to the following components: a closed damper 1, an air filter 2, a cooling coil 3, a supply air section temperature sensor 4, a heating coil 5, a supply fan 6, a pressure sensor 7, and a variable air volume terminal supply air module 8. This sensor is used for the high-efficiency filter 9, the exhaust air section temperature sensor 11, the exhaust fan 12, and the closed damper 13.

[0019] In one embodiment, the fresh air entering the air conditioning station is 35°C and 70% fresh air.

[0020] In one embodiment, the fresh air entering the variable air volume terminal air supply module has a temperature of 14°C and a humidity of 100%.

[0021] In one embodiment, when the room temperature is below 22°C, the actuator of the variable air volume device does not start, at which time the terminal air supply volume is at its minimum, and the power of the heating coil is adjusted to its maximum to regulate the room temperature to rise steadily. When the room temperature is between 22-23.5℃, the power of the heating coil gradually decreases, and the actuator of the variable air volume device does not start. When the room temperature reaches 23.5℃, the heating coil is turned off. When the room temperature is between 23.5-24℃, this temperature range is set as a dead zone.

[0022] In one embodiment, the variable air volume device and heating coil in the system are repeatedly started, while neither is started.

[0023] In one embodiment, when the temperature is between 24-25°C, the heating coil is turned off, and the actuator of the variable air volume device gradually opens to the maximum. At this time, the terminal air supply volume is at its maximum, ensuring that the temperature gradually returns to the set temperature range.

[0024] The air conditioning system of a large cruise ship medical center mainly consists of air conditioners, a chilled water system, a heated water system, terminal heated air supply modules, high-efficiency filters, and a central control system. The air conditioners internally consist of filters with differential pressure switches, cooling coils connected to the chilled water system, reheat coils connected to the heated water system, and air supply fans with differential pressure switches. The terminal heated air supply modules consist of temperature sensors, air supply terminal units, variable air volume (VAV) devices, controllers, and electric heating coils. The high-efficiency filters consist of removable filter screens and ultraviolet sterilization devices.

[0025] With an outside temperature of 35°C, 70% fresh air enters the air conditioner. The cooling and heating coils of the air conditioner regulate the temperature and humidity of the supplied air to 14°C and 100% humidity before it is delivered to the medical center through insulated ducts. Due to the special nature of medical centers, strict control of temperature parameters within the cabins is required. Therefore, a heated variable air volume (VAV) terminal air supply module has been added to the medical center's air conditioning control system. Temperature signals are transmitted via temperature sensors, and the controller then controls the heating coils and VAV units to regulate the temperature and airflow delivered to the cabins, thereby adjusting the medical center's temperature in real time. For specific adjustment methods, please refer to... Figure 4 and Figure 5 .

[0026] Beneficial effects: By adding intelligent temperature and air volume control terminal modules to the air supply terminals of the air conditioning system, the temperature of the medical center can be more precisely controlled, providing patients with a more comfortable environment and improving the speed of disease treatment. By installing air filtration devices on the exhaust ducts, not only can particulate matter in the air of the wards be filtered, but the transmission routes of infectious bacteria can also be effectively blocked, thus protecting the operation of the cruise ship.

[0027] Depend on Figure 4 and Figure 5 It can be seen that when the room temperature is below 22℃, the actuator of the variable air volume device does not start, the terminal air supply volume is at its minimum, and the power of the heating coil is adjusted to the maximum to regulate the room temperature to rise steadily. When the room temperature is between 22-23.5℃, the power of the heating coil gradually decreases, the actuator of the variable air volume device does not start, and the heating coil is turned off when the room temperature reaches 23.5℃. When the room temperature is between 23.5-24℃, this temperature range is set as a dead zone, and neither the variable air volume device nor the heating coil is started repeatedly in order to prevent the system from repeatedly starting and stopping. When the temperature is between 24-25℃, the heating coil is turned off, the actuator of the variable air volume device gradually opens to the maximum, and the terminal air supply volume is at its maximum to ensure that the temperature gradually returns to the set temperature range.

Claims

1. A variable air volume (VAV) terminal air supply module, characterized in that, The variable air volume terminal air supply module includes: A module body, which is a cavity constructed with thermal insulation material, wherein the module body has an air inlet and an air outlet; An air volume regulator is disposed in the cavity and is used to regulate the air volume that enters from the air inlet and is discharged through the air outlet. An electric heating coil is disposed within the cavity; A temperature sensor is used to measure the temperature inside the cavity; A controller is disposed within the cavity, the controller being used to control the airflow of the airflow regulator and to control the temperature of the electric heating coil based on the temperature measurement of the temperature sensor.

2. The variable air volume terminal air supply module according to claim 1, characterized in that, The air volume regulator has variable air volume blades, and the air volume can be changed by adjusting the variable air volume blades through the controller.

3. A cruise ship cold storage air conditioning and ventilation system with a variable air volume terminal air supply module, characterized in that, The cruise ship's cold storage air conditioning and ventilation system includes: A medical center having a variable air volume terminal air supply module as described in any one of claims 1 to 2.

4. The cruise ship cold storage air conditioning and ventilation system with a variable air volume terminal air supply module according to claim 3, characterized in that, The cruise ship's cold storage air conditioning and ventilation system also includes: An air conditioning station, wherein the air conditioning station is equipped with: A circulation system is formed in which fresh air enters the circulation system, passes through the variable air volume terminal air supply module, flows out of the variable air volume terminal air supply module, and then flows back to the circulation system of the air conditioning station.

5. The cruise ship cold storage air conditioning and ventilation system with a variable air volume terminal air supply module according to claim 4, characterized in that, The circulatory system includes: The system is connected in series via pipelines to a damper, air filter, cooling coil, supply air section temperature sensor, heating coil, supply fan, pressure sensor, and, after the variable air volume terminal supply air module, differential pressure sensor, exhaust air section temperature sensor, exhaust fan, and damper at the air conditioning station.

6. The cruise ship cold storage air conditioning and ventilation system with a variable air volume terminal air supply module according to claim 5, characterized in that, The fresh air entering the air conditioning station is 35°C and 70% fresh air.

7. The cruise ship cold storage air conditioning and ventilation system with a variable air volume terminal air supply module according to claim 6, characterized in that, The fresh air entering the variable air volume terminal air supply module has a temperature of 14°C and a humidity of 100%.

8. The cruise ship cold storage air conditioning and ventilation system with a variable air volume terminal air supply module according to claim 7, characterized in that, When the room temperature is below 22℃, the actuator of the variable air volume device does not start. At this time, the terminal air supply volume is at its minimum, and the power of the heating coil is adjusted to the maximum to regulate the room temperature to rise steadily. When the room temperature is between 22-23.5℃, the power of the heating coil gradually decreases, and the actuator of the variable air volume device does not start. When the room temperature reaches 23.5℃, the heating coil is turned off. When the room temperature is between 23.5-24℃, this temperature range is set as a dead zone.

9. The cruise ship cold storage air conditioning and ventilation system with a variable air volume terminal air supply module according to claim 8, characterized in that, The variable air volume device and heating coil in the system start repeatedly, while neither starts during this time.

10. The cruise ship cold storage air conditioning and ventilation system with a variable air volume terminal air supply module according to claim 9, characterized in that, When the temperature is between 24-25℃, the heating coil is turned off, and the actuator of the variable air volume device gradually opens to the maximum. At this time, the terminal air supply volume is at its maximum, ensuring that the temperature gradually returns to the set temperature range.

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