A cabin heating and ventilation system

Abstract

The utility model belongs to square cabin equipment technical field, especially relate to a cabin heating system. Including square cabin, the square cabin is divided into cabin room and equipment room, still include: fresh air handling unit, install in the equipment room, fresh air handling unit includes: case, electric heater, evaporimeter, fresh air fan and filter core, the case in from the air inlet end to the air supply end has electric heater, evaporimeter, fresh air fan and filter core in proper order, fuel oil warm air blower, install in the equipment room, fuel oil warm air blower has air inlet and air outlet, and its air outlet is linked together with the fresh air fan group's warm air inlet through the air inlet pipe. The utility model solves the problem that the traditional cabin heating rate is slow, can realize the multi -stage power heating in the cabin, the maximum heating rate is improved significantly, and the cabin has better low temperature adaptability.

Description

Technical Field

[0001] This utility model belongs to the technical field of equipment for mobile cabins, and specifically relates to a cabin heating and ventilation system. Background Technology

[0002] Traditional HVAC systems in prefabricated shelters typically rely on air conditioning for both cooling and heating, with heating usually achieved through electric heaters. However, existing single-electric-heating structures suffer from a limited heating mechanism and a slow temperature rise rate during the heating process. Utility Model Content

[0003] The purpose of this invention is to provide a cabin heating and ventilation system that solves the problem of slow heating rate in traditional cabins. It can realize multi-level power heating in the cabin, significantly improve the maximum heating rate, and give the cabin better low-temperature adaptability.

[0004] To solve the above-mentioned technical problems, this utility model provides a cabin heating and ventilation system, including a modular cabin, the modular cabin being divided into compartments and equipment rooms, and further including:

[0005] A fresh air handling unit is installed in the equipment room. The fresh air handling unit includes: a casing, an electric heater, an evaporator, a fresh air fan, and a filter element; the electric heater, the evaporator, the fresh air fan, and the filter element are arranged sequentially from the air inlet to the air outlet in the casing.

[0006] A fuel-fired heater is installed in the equipment room. The fuel-fired heater has an air inlet and an air outlet, and its air outlet is connected to the heating air inlet of the fresh air unit through an air inlet pipe.

[0007] Preferably, it also includes: a cold air inlet and a warm air inlet; the cold air inlet and the warm air inlet are symmetrically opened on the front and rear side walls of the chassis, and are both located on the right side of the electric heater.

[0008] Preferably, it also includes an air inlet valve, which is installed on the cold air inlet.

[0009] Preferably, the air inlet valve is a manual or electric on / off valve.

[0010] Preferably, it also includes an air supply valve, which is installed on the air supply port on the left side of the fresh air unit and is connected to the compartment through the air supply valve.

[0011] Preferably, it also includes a heating, ventilation and air conditioning (HVAC) control module and a temperature sensor, which are installed in the cabin. The HVAC control module is electrically connected to the fresh air unit, the fuel-fired heater, the air supply valve, and the temperature sensor via cables.

[0012] Preferably, the HVAC control module is equipped with multiple adjustable power levels. By switching different power levels, the heating power of the electric heater and the fuel-fired heater can be changed, thereby achieving multi-level adjustment of the heating rate.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This invention can activate the electric heating inside the fresh air unit, or the fuel-fired heater, or both simultaneously for rapid heating, depending on the ambient temperature. The heating rate is adjustable in multiple levels, enabling rapid heating of the cabin. Attached Figure Description

[0015] Figure 1 This is a top view of the internal structure of a cabin heating and ventilation system provided by this utility model.

[0016] Figure 2 This is a side view of the structure of the fresh air handling unit and the fuel-fired heater provided by this utility model.

[0017] Figure 3 This is a flowchart of the working process of a cabin heating and ventilation system provided by this utility model.

[0018] In the diagram: 1-cabinet, 2-equipment room, 3-fresh air unit, 31-chassis, 32-electric heater, 33-evaporator, 34-fresh air fan, 35-filter element, 36-cold air inlet, 37-warm air inlet, 38-air inlet valve, 39-air supply valve, 4-fuel-fired heater, 5-air inlet duct, 6-HVAC control module, 7-temperature sensor. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0020] like Figures 1-3 As shown, this utility model embodiment specifically provides a cabin HVAC system, including a modular cabin, which is divided into a compartment 1 and an equipment room 2, and further includes:

[0021] Fresh air handling unit 3 is installed in equipment room 2. Fresh air handling unit 3 includes: casing 31, electric heater 32, evaporator 33, fresh air fan 34 and filter element 35. The electric heater 32, evaporator 33, fresh air fan 34 and filter element 35 are arranged in sequence from air inlet to air outlet in casing 31. The electric heater 32 electrically heats the incoming fresh air; the evaporator 33 cools the fresh air; and the filter element 35 filters the heated or cooled fresh air.

[0022] The fuel-fired heater 4 is installed in the equipment room 2. The fuel-fired heater 4 has an air inlet and an air outlet. Its air outlet is connected to the heating air inlet 37 of the fresh air unit 3 through the air inlet pipe 5.

[0023] It also includes: a cold air inlet 36 and a warm air inlet 37; the front and rear side walls of the chassis 31 are symmetrically provided with cold air inlets 36 and warm air inlets 37, and both are located on the right side of the electric heater 32.

[0024] It also includes an air inlet valve 38, which is installed on the cold air inlet 36.

[0025] The air inlet valve 38 is a manual or electric valve.

[0026] It also includes an air supply valve 39, which is installed on the air supply port on the left side of the fresh air unit 3 and is connected to the compartment 1.

[0027] It also includes a heating and ventilation control module 6 and a temperature sensor 7, which are installed in the compartment 1. The heating and ventilation control module 6 receives the temperature setting from the operator. The heating and ventilation control module 6 is electrically connected to the fresh air unit 3, the fuel-fired heater 4, the air supply valve 39 and the temperature sensor 7 via cables for power supply and information transmission to the equipment.

[0028] The HVAC control module 6 is equipped with multiple adjustable power levels. By switching between different power levels, the heating power of the electric heater 32 and the fuel-fired heater 4 can be changed, thereby achieving multi-level adjustment of the heating rate.

[0029] It also includes the following working principles:

[0030] The HVAC control module 6 receives instructions from the operator, sets the cabin temperature, and sends instructions to the fresh air unit 3, the fuel-fired heater 4, and the air supply valve 39 to control them based on the current cabin temperature collected by the temperature sensor 7.

[0031] When the above-mentioned HVAC system is cooling, both the air inlet valve 38 and the air supply valve 39 are open. The outside air is cooled by the evaporator 33 when it passes through the inside of the fresh air unit 3's casing 31 under the action of the fresh air fan 34, and then enters the compartment 1 through the air supply valve 39 to cool the compartment 1.

[0032] When the above-mentioned HVAC system is heating, the air inlet valve 38 at the cold air inlet 36 is closed, while the air supply valve 39 is opened. Outside air first passes through the fuel-fired heater 4, then through the fresh air unit 3, and finally enters the cabin 1 through the air supply valve 39 to heat up the cabin 1.

[0033] Depending on the ambient temperature, the electric heating inside the fresh air unit 3 can be turned on independently, or the fuel-fired heater 4 can be turned on independently for heating, or both can be turned on simultaneously for rapid heating. The heating rate is adjustable in multiple levels, enabling rapid heating of the cabin.

[0034] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A cabin heating, ventilation, and air conditioning system, comprising a modular cabin, said modular cabin being divided into a compartment (1) and an equipment room (2), characterized in that, Also includes: The fresh air handling unit (3) is installed in the equipment room (2). The fresh air handling unit (3) includes: a casing (31), an electric heater (32), an evaporator (33), a fresh air fan (34), and a filter element (35). The electric heater (32), the evaporator (33), the fresh air fan (34), and the filter element (35) are arranged sequentially from the air inlet to the air outlet in the casing (31). A fuel-fired heater (4) is installed in the equipment room (2). The fuel-fired heater (4) has an air inlet and an air outlet. Its air outlet is connected to the heating air inlet (37) of the fresh air unit (3) through an air inlet pipe (5).

2. The cabin HVAC system as described in claim 1, characterized in that, Also includes: Cold air inlet (36) and hot air inlet (37); the cold air inlet (36) and the hot air inlet (37) are symmetrically provided on the front and rear side walls of the chassis (31), and are both located on the right side of the electric heater (32).

3. A cabin HVAC system as described in claim 2, characterized in that, It also includes an air inlet valve (38), which is installed on the cold air inlet (36).

4. A cabin HVAC system as described in claim 3, characterized in that, The air inlet valve (38) is a manual or electric valve.

5. A cabin HVAC system as described in claim 1, characterized in that, It also includes an air supply valve (39), which is installed on the air supply port on the left side of the fresh air unit (3) and is connected to the cabin (1) through the air supply valve (39).

6. A cabin HVAC system as described in claim 5, characterized in that, It also includes a heating and ventilation control module (6) and a temperature sensor (7), which are installed in the cabin (1). The heating and ventilation control module (6) is electrically connected to the fresh air unit (3), the fuel-fired heater (4), the air supply valve (39) and the temperature sensor (7) via cables.

7. A cabin HVAC system as described in claim 6, characterized in that, The HVAC control module (6) is equipped with multiple adjustable power levels. By switching different power levels, the heating power of the electric heater (32) and the fuel-fired heater (4) can be changed, thereby realizing multi-level adjustment of the heating rate.

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