A heat exchange device for temporary buildings

Abstract

This invention discloses a heat exchange device for temporary buildings, comprising a water supply and regulation system and a refrigeration system. The water supply and regulation system includes a first water tank, a second water tank, a radiant cooler, a first water supply pipe, a second water supply pipe, a third water supply pipe, a drain pipe, a return pipe, a first water pump, a second water pump, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve. The bottom of the first water tank is connected to the first water supply pipe, the second water supply pipe, and the radiant cooler. The bottom of the second water tank is connected to the second water supply pipe, the third water supply pipe, the drain pipe, and the return pipe. The radiant cooler is installed at the lower end of the first water tank, with one end connected to the bottom of the first water tank and the other end connected to the return pipe. This invention utilizes a radiant cooler to provide cooling, which is beneficial to personnel health; it automatically switches operating modes under different ambient temperatures to ensure cooling effect; and it is suitable for simple installation and quick disassembly.

Description

Technical Field

[0001] This invention relates to a heat exchange device for temporary buildings, belonging to the field of air conditioning technology. Background Technology

[0002] Temporary ground-based structures are used for disease control, emergency shelter, or construction purposes. These structures require a certain level of protection, need to be erected quickly and cost-effectively, and airflow cooling is not suitable during disease control situations. Therefore, a heat exchange device is needed to provide clean ventilation and rapid activation of protective measures in emergency situations. This heat exchange device also needs to be modular to facilitate relocation and installation, meeting the needs of various applications such as fixed buildings, emergency structures, and large, mobile shelters.

[0003] Chinese utility model patent ZL 202220011087.2 discloses a low-energy-consumption centralized room temperature control device with fire-fighting function, comprising: a heat exchange coil installed inside the roof of a temporary building; the heat exchange coil connected to a temperature-regulating water tank, with a pressure boosting and stabilizing device connected in series on the pipeline connecting the heat exchange coil and the temperature-regulating water tank; both refrigeration and heating equipment connected to the inside of the temperature-regulating water tank; and a fire-fighting water tank connected to the temperature-regulating water tank, with a water supply valve and a water pump connected in series between them, the water supply valve being electrically connected to the water pump. This utility model installs a heat exchange coil on the roof of a temporary building, enabling effective cooling and heating of the interior of the temporary building. Furthermore, in the event of a fire inside the temporary building, the heat exchange coil, after being damaged by heat, can function as a sprinkler system for fire suppression. Additionally, when the pressure inside the temperature-regulating water tank is insufficient, the fire-fighting water tank can replenish the temperature-regulating water tank, ensuring the normal operation of the control device. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a heat exchange device for temporary buildings.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] A heat exchange device for temporary buildings includes a water supply regulation system and a refrigeration system;

[0007] The water replenishment and regulation system includes a first water tank, a second water tank, a radiant cooler, a first water replenishment pipe, a second water replenishment pipe, a third water replenishment pipe, a drain pipe, a return pipe, a first water pump, a second water pump, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve.

[0008] The bottom of the first water tank is connected to the first water supply pipe, the second water supply pipe, and the radiant cooler;

[0009] The bottom of the second water tank is connected to the second water supply pipe, the third water supply pipe, the drain pipe, and the return water pipe;

[0010] The radiant cooler is installed at the lower end of the first water tank, with one end connected to the bottom of the first water tank and the other end connected to the return water pipe.

[0011] Preferably, the first water tank is positioned above the radiant cooler and the second water tank, with the radiant cooler positioned above the second water tank.

[0012] Preferably, one end of the first water supply pipe is connected to the bottom of the first water tank, and the other end is connected to the first water pump.

[0013] One end of the second water supply pipe is connected to the bottom of the first water tank, and the other end is connected to the bottom of the second water tank;

[0014] One end of the third water supply pipe is connected to the bottom of the second water tank, and the other end is connected to the first water pump.

[0015] Preferably, the first water supply pipe and the third water supply pipe are in parallel and are both connected to the first water tank and the second water tank.

[0016] Preferably, the drain pipe is installed at the bottom of the second water tank, with one end connected to the bottom of the second water tank and the other end being an open end.

[0017] Preferably, the first solenoid valve is installed on the first water supply pipe to control the water supply to the first water tank;

[0018] The second solenoid valve is installed on the third water supply pipe to control the water supply to the second water tank;

[0019] The third solenoid valve is installed on the drain pipe to control the water volume in the second water tank;

[0020] The fourth solenoid valve is located on the second water supply pipe and controls the water circulation between the second water tank and the first water tank.

[0021] Preferably, it also includes a first temperature sensor, which is installed inside the second water tank to monitor the water temperature inside the second water tank.

[0022] Preferably, a second temperature sensor is also included, which is installed on the first water pump to monitor the temperature of the external water source.

[0023] Preferably, the refrigeration system includes an evaporative heat exchanger, a condenser heat exchanger, a refrigeration unit, and a liquid receiver, wherein the evaporative heat exchanger is embedded in the first water tank, and the condenser heat exchanger is embedded in the second water tank.

[0024] Preferably, one end of the evaporative heat exchanger is connected to the compressor of the refrigeration unit, and the other end is connected to the liquid receiver.

[0025] One end of the evaporative heat exchanger is connected to the compressor of the refrigeration unit, and the other end is connected to the liquid receiver.

[0026] Compared with existing technologies, this invention has the following technical features: 1) Utilizing a radiant cooler to provide cooling is more beneficial to the health of people in the building than directly providing air conditioning; 2) Using heat exchange instead of direct air conditioning allows for the suspension of air conditioning (refrigeration unit) operation, thereby achieving energy saving; 3) Employing different control methods under different ambient temperatures and automatically switching to the corresponding operating mode ensures cooling effect, reduces malfunctions, and lowers maintenance costs; 4) Simple structure, low cost, suitable for easy installation and quick disassembly; 5) Utilizing ordinary water as the heat exchange medium results in low cost and wide applicability to various operating conditions. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a heat exchange device for temporary buildings in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 The diagram shows the working principle of a heat exchange device for temporary buildings in superheat mode.

[0029] Figure 3 for Figure 1 The diagram shows the working principle of the heat exchange device for temporary buildings in high-temperature mode. Detailed Implementation

[0030] The technical content of the present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 As shown in the figure, this invention discloses a heat exchange device for temporary buildings, also known as a mobile heat exchange station, used to provide cooling for temporary buildings. It should be noted that this heat exchange device for temporary buildings is a stand-alone unit, easy to install, placed outdoors, and utilizes radiative cooling.

[0032] The heat exchange device for this temporary building includes a water supply regulation system and a refrigeration system. The water supply regulation system includes a first water tank 101, a second water tank 102, a radiant cooler 110, a first water supply pipe 121, a second water supply pipe 122, a third water supply pipe 123, a drain pipe 124, a return pipe 125, a first water pump 131, a second water pump 132, a first solenoid valve 141, a second solenoid valve 142, a third solenoid valve 143, and a fourth solenoid valve 144. Preferably, the water supply regulation system also includes a first temperature sensor 151 and a second temperature sensor 152.

[0033] The first water tank 101 is installed at the highest point, and its bottom is connected to the first water supply pipe 121, the second water supply pipe 122, and the radiant cooler 110. The bottom of the second water tank 102 is connected to the second water supply pipe 122, the third water supply pipe 123, the drain pipe 124, and the return water pipe 125. The second water tank 102 has a safety water level line and a limit water level line inside. The radiant cooler 110 is installed at the lower end of the first water tank 101, with one end connected to the bottom of the first water tank 101 and the other end connected to the return water pipe 125. The installation positions of the first water tank 101, the radiant cooler 110, and the second water tank 102 decrease sequentially, meaning the first water tank 101 is above the radiant cooler 110 and the second water tank 102, and the radiant cooler 110 is above the second water tank 102. This type of drop-position installation facilitates the automatic flow of water from the first water tank 101 into the radiant cooler 110 under the influence of gravity, and then into the second water tank 102 along the return water pipe 125.

[0034] The first water supply pipe 121 is connected at one end to the bottom of the first water tank 101 and at the other end to the first water pump 131. The second water supply pipe 122 is connected at one end to the bottom of the first water tank 101 and at the other end to the bottom of the second water tank 102. The third water supply pipe 123 is connected at one end to the bottom of the second water tank 102 and at the other end to the first water pump 131. The drain pipe 124 is installed at the bottom of the second water tank 102, with one end connected to the bottom of the second water tank 102 and the other end being an open end for drainage. The return water pipe 125 is connected at one end to the bottom of the radiant cooler 110 and at the other end to the bottom of the second water tank 102. The first water supply pipe 121 and the third water supply pipe 123 are connected in parallel, both connecting to the first water tank 101 and the second water tank 102, to simultaneously supply water to both tanks.

[0035] The first water pump 131 is installed at the outlet of the external water source, which can pressurize the external water source at a lower level and send it into the first water tank 101 and the second water tank 102 at a higher level. The second water pump 132 is installed between the second water tank 102 and the first water tank 101, close to the second water tank 102, which can pressurize the water in the second water tank 102 at a lower level and flow into the first water tank 101.

[0036] The first solenoid valve 141 is installed on the first water supply pipe 121 to control the water supply to the first water tank 101. The second solenoid valve 142 is installed on the third water supply pipe 123 to control the water supply to the second water tank 102. The third solenoid valve 143 is installed on the drain pipe 124 to control the water volume in the second water tank 102. The fourth solenoid valve 144 is installed on the second water supply pipe 122 to control the water circulation between the second water tank 102 and the first water tank 101.

[0037] The first temperature sensor 151 is installed inside the second water tank 102 to monitor the water temperature T1 inside the second water tank 102. The second temperature sensor 152 is installed between the water source and the first water pump 131 to monitor the external water temperature T2.

[0038] The refrigeration system includes an evaporator heat exchanger 210, a condenser heat exchanger 220, a refrigeration unit 200, and a liquid receiver 202. The evaporator heat exchanger 210 is embedded within the first water tank 101 and functions as an evaporator. One end of the evaporator heat exchanger 210 is connected to the compressor 201 of the refrigeration unit 200 via a four-way valve, and the other end is connected to the liquid receiver 202. The condenser heat exchanger 220 is embedded within the second water tank 102 and functions as a condenser. One end of the evaporator heat exchanger 210 is connected to the compressor 201 of the refrigeration unit 200 via a four-way valve, and the other end is connected to the liquid receiver 202.

[0039] like Figures 1 to 3 As shown, when the system is turned on, external water flows into the first water tank 101 through the first water pump 131 and the first water supply pipe 121. Under the action of the embedded evaporative heat exchanger 210, the water is cooled into ice. The ice flows into the radiant cooler 110 under the influence of gravity. The radiant cooler 110 (located indoors in the temporary building) exchanges heat with the air, absorbing heat from the air and radiating cold energy outwards, thus lowering the surrounding air temperature. Simultaneously, the ice in the radiant cooler 110 absorbs heat and melts into ice water, which flows into the second water tank 102 through the return water pipe 125. The system adjusts the water level and temperature in the second water tank 102 by controlling the opening and closing of the first solenoid valve 141, the second solenoid valve 142, the third solenoid valve 143, and the fourth solenoid valve 144, based on the temperature difference between the external water source temperature T2 and the water temperature T1 in the second water tank 102, and by controlling the opening and closing of the fourth solenoid valve 144, thereby ensuring the normal operation of the system.

[0040] In one embodiment of the present invention, there are three switchable working modes based on the temperature difference between the external environment and the water in the second water tank 102: normal temperature mode, overheating mode, and high temperature mode.

[0041] like Figure 1As shown, when the water temperature T1 in the second water tank 102 is less than 35℃ and the water temperature T1 in the second water tank is less than the external water source temperature T2, the system enters the normal temperature mode, and the fourth solenoid valve 144 opens. The water in the second water tank 102 is pressurized by the second water pump 132 and flows into the first water tank 101. The water in the first water tank 101 is cooled into ice blocks by the embedded evaporative heat exchanger 210. The ice blocks flow into the radiant cooler 110 under the action of gravity. The radiant cooler 110 (installed indoors in the temporary building) exchanges heat with the air, absorbing heat from the air and radiating cold energy outward, thus lowering the surrounding air temperature. At the same time, the ice blocks in the radiant cooler 110 absorb heat and melt into ice water, which flows into the second water tank 102 along the return water pipe 125. The water in the second water tank 102, after its temperature drops, exchanges heat with the condenser heat exchanger 220 embedded in the second water tank 102, and then, after being pressurized again by the second water pump 132, flows back to the first water tank 101, forming a circulating water supply cooling circuit. During this process, when the water level in the second water tank 102 falls below the safe water level, the second solenoid valve 142 opens again, and external water is supplied to the second water tank 102 via the first water pump 131 and the third water supply pipe 123, ensuring that the water level in the second water tank 102 remains within the normal range and that the cooling system operates normally.

[0042] like Figure 2 As shown, when the water temperature T1 in the second water tank 102 is less than 35℃ and the water temperature T1 in the second water tank is greater than the external water source temperature T2, the system enters the overheating mode. The first solenoid valve 141 opens, and the fourth solenoid valve 144 closes. The circulation and replenishment of water in the first water tank 101 and the second water tank 102 stop. External water flows into the first water tank 101 through the first water pump 131 and along the first water supply pipe 121. The water flowing into the first water tank 101 is cooled into ice by the action of the evaporative heat exchanger 210. The ice flows into the radiant cooler 110 under the action of gravity. The radiant cooler 110 (located indoors in the temporary building) exchanges heat with the air, absorbs heat from the air and radiates cold energy outward, thus lowering the surrounding air temperature. At the same time, the ice in the radiant cooler 110 absorbs heat and melts into ice water, which flows into the second water tank 102 along the return water pipe 125. When the water level in the second water tank 102 exceeds the limit, the third solenoid valve 143 automatically opens, and excess water in the second water tank 102 is discharged through the drain pipe 124, ensuring that the water level in the second water tank 102 remains within the normal range and that the refrigeration system operates normally. This method of using external water (at a temperature lower than that of the second water tank) to replenish the first water tank makes the heat exchanger in the first water tank more energy-efficient.

[0043] like Figure 3As shown, when the water temperature T1 in the second water tank 102 exceeds 35℃, the system enters high-temperature mode. The first solenoid valve 141, the second solenoid valve 142, and the third solenoid valve 143 open, while the fourth solenoid valve 144 closes. The first water tank 101 and the second water tank 102 stop circulating water. External water flows into the first water tank 101 via the first water pump 131 and the first water supply pipe 121. The water flowing into the first water tank 101 is cooled into ice by the evaporative heat exchanger 210, and the ice flows into the radiant cooler 110 under gravity. The radiant cooler 110 (located indoors in the temporary building) exchanges heat with the air, absorbing heat from the air and radiating cold energy outwards, thus lowering the surrounding air temperature. Simultaneously, the ice in the radiant cooler 110 absorbs heat and melts into ice water, flowing into the second water tank 102 via the return water pipe 125. At the same time, external water flows into the second water tank 102 via the first water pump 131 and the second water supply pipe 122. Meanwhile, the high-temperature water in the second water tank 102 is discharged to the outside through the drain pipe 124, and the drainage volume of the drain pipe 124 is greater than the water inflow into the second water tank 102. During this process, the second water tank 102 is in a state of continuous water replenishment and drainage.

[0044] Because the drainage volume of drain pipe 124 is greater than the inflow volume of the second water tank 102, when the water level in the second water tank 102 is lower than the safe water level line, the third solenoid valve 143 closes, drainage stops, and the second water tank 102 enters the water replenishment state. When the water level in the second water tank 102 is higher than the limit water level line, the third solenoid valve 143 reopens, and the second water tank 102 enters the water replenishment and drainage state again. Through continuous and repeated water replenishment and drainage, and by using the relatively low-temperature water from the first water tank to cool the water in the second water tank, the water temperature T1 in the second water tank 102 is less than 30℃, and the water level in the second water tank 102 is within the normal range, at which point the second water tank 102 stops replenishing water. During this process, the second water tank 102, through continuous and repeated water replenishment and drainage, achieves the goal of keeping both the water temperature and water level in the second water tank 102 within the normal range, and the refrigeration system operates normally.

[0045] In summary, this invention has the following technical features: 1) Utilizing a radiant cooler to provide cooling is more beneficial to the health of people in the building than directly providing air conditioning; 2) Using heat exchange instead of direct air conditioning allows for the suspension of air conditioning (refrigeration unit) operation, thereby achieving energy savings; 3) Employing different control methods under different ambient temperatures and automatically switching to the corresponding operating mode ensures cooling effect, reduces malfunctions, and lowers maintenance costs; 4) Simple structure, low cost, suitable for easy installation and quick disassembly; 5) Utilizing ordinary water as the heat exchange medium results in low cost and wide applicability to various operating conditions.

[0046] The heat exchange device for temporary buildings provided by this invention has been described in detail above. Any obvious modifications made by those skilled in the art without departing from the essence of this invention will constitute an infringement of the patent rights of this invention and will incur corresponding legal liability.

Claims

1. A heat exchange device for temporary buildings, characterized in that... This includes a water supply and regulation system and a refrigeration system; The water replenishment and regulation system includes a first water tank, a second water tank, a radiant cooler, a first water replenishment pipe, a second water replenishment pipe, a third water replenishment pipe, a drain pipe, a return pipe, a first water pump, a second water pump, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve. The bottom of the first water tank is connected to the first water supply pipe, the second water supply pipe, and the radiant cooler; The bottom of the second water tank is connected to the second water supply pipe, the third water supply pipe, the drain pipe, and the return water pipe; The radiant cooler is installed at the lower end of the first water tank, with one end connected to the bottom of the first water tank and the other end connected to the return water pipe. The refrigeration system includes an evaporative heat exchanger, a condenser heat exchanger, a refrigeration unit, and a liquid receiver. The evaporative heat exchanger is embedded in the first water tank. One end of the evaporative heat exchanger is connected to the compressor of the refrigeration unit, and the other end is connected to the liquid receiver. The condenser heat exchanger is embedded in the second water tank.

2. The heat exchange device for temporary buildings as described in claim 1, characterized in that: The first water tank is positioned above the radiant cooler and the second water tank, with the radiant cooler positioned above the second water tank.

3. The heat exchange device for temporary buildings as described in claim 2, characterized in that: One end of the first water supply pipe is connected to the bottom of the first water tank, and the other end is connected to the first water pump; One end of the second water supply pipe is connected to the bottom of the first water tank, and the other end is connected to the bottom of the second water tank; One end of the third water supply pipe is connected to the bottom of the second water tank, and the other end is connected to the first water pump.

4. The heat exchange device for temporary buildings as described in claim 3, characterized in that: The first water supply pipe and the third water supply pipe are connected in parallel, and both are connected to the first water tank and the second water tank.

5. The heat exchange device for temporary buildings as described in claim 3, characterized in that: The drain pipe is installed at the bottom of the second water tank, with one end connected to the bottom of the second water tank and the other end being an open end.

6. The heat exchange device for temporary buildings as described in claim 5, characterized in that: The first solenoid valve is installed on the first water supply pipe to control the water supply to the first water tank; The second solenoid valve is installed on the third water supply pipe to control the water supply to the second water tank; The third solenoid valve is installed on the drain pipe to control the water volume in the second water tank; The fourth solenoid valve is located on the second water supply pipe and controls the water circulation between the second water tank and the first water tank.

7. The heat exchange device for temporary buildings as described in claim 6, characterized in that... It also includes a first temperature sensor, set The second water tank is used to monitor the water temperature inside.

8. The heat exchange device for temporary buildings as described in claim 7, characterized in that... It also includes a second temperature sensor, which is installed on the first water pump to monitor the temperature of the external water source.

9. The heat exchange device for temporary buildings as described in claim 1, characterized in that: One end of the condenser heat exchanger is connected to the compressor of the refrigeration unit, and the other end is connected to the liquid receiver.

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