A flow regulation outdoor platform suitable for both winter and summer

Abstract

A flow-regulating outdoor platform suitable for winter and summer seasons comprises an outdoor platform, a platform external circulation system and a platform internal circulation system; the outdoor platform comprises an outer shell and a heat exchange filler installed in the outer shell, a fan and an air outlet are provided on the outer shell, and a liquid accumulation pool connected to the inner cavity of the outer shell is provided at the bottom of the outer shell; the platform external circulation system comprises a first liquid inlet pipe, a second liquid inlet pipe and a liquid return pipe, one end of the liquid return pipe is connected to a first liquid return branch pipe and a second liquid return branch pipe, the first liquid inlet pipe and the second liquid inlet pipe are respectively provided with a first liquid supply valve and a second liquid supply valve, the first liquid return branch pipe and the second liquid return branch pipe are respectively provided with a first liquid return valve and a second liquid return valve; the platform internal circulation system comprises a water pump, a liquid supply pipe and a liquid return pipe; the present invention can achieve heat exchange of different solutions and different flow rates in winter and summer through the combination of the outdoor platform, the platform external circulation system and the platform internal circulation system, thereby realizing the purpose of efficient operation of the outdoor platform in both winter and summer seasons.

Description

Technical Field

[0001] The present invention relates to the field of heating, ventilation and air conditioning, and in particular to a flow regulating outdoor platform suitable for winter and summer. Background Art

[0002] Currently, cooling towers used in the domestic HVAC industry are only used in summer cooling systems. During summer cooling operation, they release heat from condensed water into the air, thereby lowering the condensed water temperature and further absorbing heat from the refrigerant in the condenser of the refrigeration unit, completing the refrigeration cycle of the refrigeration unit. When the system is in winter heating mode, most air conditioning systems use boilers burning various fossil fuels such as natural gas and oil to heat the system. Cooling towers do not perform heat dissipation and are therefore idle.

[0003] A new air conditioning system currently uses a low-temperature water-source heat pump in conjunction with a cooling tower as the system's heat and cooling sources. In summer, the cooling tower acts as a heat sink, providing cooling for the water-source heat pump, while in winter, it acts as a heat sink, providing heat for the water-source heat pump. This maximizes equipment utilization, improves equipment utilization, and reduces initial system investment. Because the cooling tower provides heat for the water-source heat pump during winter, this system is referred to in China as a heat source tower heat pump air conditioning system. Other manufacturers and equipment suppliers also promote this system by referring to it as an air-energy tower heat pump air conditioning system or an energy tower heat pump air conditioning system. In this system, the cooling tower dissipates heat to the outdoor air in summer and absorbs heat from the outdoor air in winter. Its role varies depending on the season and operating conditions, and its operating state changes accordingly.

[0004] In the summer, the condensed water in the cooling tower comes into contact with the outdoor air. Since the condensed water temperature is generally 35°C to 37°C, during the contact process with the outdoor air, this temperature will be higher than the wet-bulb temperature of the outdoor air or higher than the dry-bulb temperature of the outdoor air. As a result, the condensed water will exchange heat and mass with the outdoor air. Part of the heat will be dissipated through heat exchange, and the rest of the heat will be dissipated through evaporation of the condensed water. During the heat exchange process, the temperature of the condensed water will gradually decrease, thereby achieving the purpose of cooling. In the winter, the low-temperature antifreeze in the cooling tower comes into contact with the outdoor air. Since the antifreeze temperature is generally 0°C to -10°C, during the contact process with the outdoor air, this temperature will be lower than the dry-bulb temperature or dew point temperature of the outdoor air. Therefore, the antifreeze will exchange heat and mass with the outdoor air. Part of the heat will enter the antifreeze through heat exchange, and the rest of the heat will enter the antifreeze through the release of latent heat from the condensation of water vapor in the air. During the heat exchange process, the temperature of the antifreeze will gradually rise, thereby achieving the purpose of warming.

[0005] However, in the above heat exchange process, due to the different amounts of heat required to be exchanged in summer and winter, and the different operating conditions of the cooling tower, the condensate and antifreeze flow rates entering the cooling tower are also different (the antifreeze flow rate is generally 50-60% of the condensate flow rate), which leads to certain problems. Currently, the summer condensate flow rate is generally used to select cooling towers. However, the summer condensate flow rate is much greater than the winter antifreeze flow rate. As a result, the antifreeze is unevenly distributed in the cooling tower in winter, the antifreeze temperature rise is small, the heat exchange effect is deteriorated, and the heat exchange rate decreases. This further leads to a decrease in the heating efficiency of the low-temperature water source heat pump main unit in winter, thereby reducing the overall winter heating efficiency. If the cooling tower is selected based on the winter antifreeze flow rate, it will cause insufficient condensate in summer and reduce the heat dissipation efficiency in summer.

[0006] Analysis of the above reasons shows that the main reason is that in the outdoor circulation system, the low-temperature water source heat pump host is connected to the cooling tower in a single way. The same cooling tower is used for heat absorption and heat dissipation in both winter and summer. The operating conditions cannot be adjusted, resulting in the system only being biased towards a certain optimal operating condition and unable to achieve the optimal operating conditions throughout the year. Therefore, it is necessary to design a system that can adjust the outdoor operating conditions and optimize the heat exchange efficiency in both winter and summer to better utilize the advantages of the air-conditioning system, thereby promoting the application and promotion of the system in the hot summer and cold winter climate zone in the middle and lower reaches of the Yangtze River in my country. Summary of the Invention

[0007] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a flow regulation outdoor platform suitable for both winter and summer, so as to solve the problem that in the existing heat source tower heat pump air-conditioning system, the water flow in the outdoor cooling tower changes due to the different heat exchange characteristics in winter and summer, thereby reducing the heat exchange efficiency of the cooling tower.

[0008] The object of the present invention is achieved through the following technical solutions:

[0009] A flow regulating outdoor platform suitable for both winter and summer, consisting of an outdoor platform, an external circulation system outside the platform, and an internal circulation system inside the platform:

[0010] The outdoor platform includes a shell and a heat exchange filler installed in the shell, a fan is provided at the upper end of the shell, an air outlet is provided on the side wall of the shell, and a liquid accumulation pool is provided at the bottom of the shell and is connected to the inner cavity of the shell;

[0011] The platform external circulation system includes a first liquid inlet pipe, a second liquid inlet pipe and a return liquid pipe, one end of the first liquid inlet pipe is connected to the side wall of the shell, the other end of the first liquid inlet pipe is connected to the condenser outlet of the water source heat pump host, and one end of the second liquid inlet pipe is connected to the evaporator outlet of the water source heat pump host, one end of the return liquid pipe is connected to the first return liquid branch pipe and the second return liquid branch pipe, the first return liquid branch pipe and the second return liquid branch pipe are respectively connected to the evaporator outlet end and the condenser outlet end of the water source heat pump host, the other ends of the return liquid pipe and the second liquid inlet pipe are both connected to the liquid accumulation pool, the first liquid inlet pipe and the second liquid inlet pipe are respectively provided with a first liquid supply valve and a second liquid supply valve, and the first return liquid branch pipe and the second return liquid branch are respectively provided with a first liquid return valve and a second liquid return valve;

[0012] The platform internal circulation system includes a water pump, a liquid delivery pipe and a return pipe. The liquid inlet end of the water pump is connected to the liquid accumulation pool through the liquid delivery pipe. One end of the return pipe is connected to the liquid outlet end of the water pump, and the other end of the return pipe is fixed to the side wall of the shell.

[0013] In the above invention, further, the outdoor platform also includes a manifold fixed in the inner cavity of the shell and located between the heat exchange filler and the fan, and the first liquid inlet pipe and the return pipe are connected to the manifold.

[0014] In the above invention, further, a plurality of nozzles are arranged at equal intervals on the water collecting and distributing device, and the spraying direction of the nozzles is set upward or downward.

[0015] In the above invention, further, the air outlets are arranged on the side walls around the shell, and each air outlet is provided with an air guide plate.

[0016] In the above invention, further, the air guide plate and the heat exchange filler are installed at the same height.

[0017] In the above invention, further, the other ends of the liquid return pipe and the second liquid inlet pipe are respectively installed on the bottom and the side wall of the liquid accumulation pool.

[0018] In the above invention, further, the amount of liquid pumped by the water pump per unit time is the same as the flow rate at the condenser outlet per unit time.

[0019] In the above invention, further, the capacity of the liquid accumulation pool is greater than the amount of liquid pumped by the water pump during five minutes of normal operation.

[0020] In the above invention, further, a stop valve is provided on the reflux pipe.

[0021] In the above invention, further, a wind tube is provided at the upper end of the shell, and the fan is installed at the upper end of the shell through the wind tube.

[0022] The beneficial effects of the present invention are: first, the present invention combines the outdoor platform, the platform external circulation system, and the platform internal circulation system together. Through the mutual cooperation of the outdoor platform, the platform external circulation system, and the platform internal circulation system, the water flow entering the outdoor platform can be adjusted to achieve the purpose of maximizing the heat exchange efficiency of the outdoor platform, and solve the problem of reduced heat exchange efficiency of the outdoor platform due to unbalanced water volume in winter and summer.

[0023] Secondly, the present invention is easy to install, has a compact structure, a high integration rate, and a wide range of applications. It can be widely used in various places that require cooling and heating; the platform utilization rate is high, the heat exchange efficiency is high, and the comprehensive economic indicators are high. The heat exchange mode can be switched according to different outdoor environments and external climate conditions to maximize the platform's heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] In the figure, 1.1-housing, 1.2-heat exchange filler, 1.3-fan, 1.4-air outlet, 1.5-liquid accumulation pool, 1.6-water collector and distributor, 1.7-nozzle, 1.8-air guide plate, 1.9-air duct, 2.1-first liquid inlet pipe, 2.2-second liquid inlet pipe, 2.3-return liquid pipe, 2.31-first return liquid branch pipe, 2.32-second return liquid branch pipe, 2.4-first liquid supply valve, 2.5-second liquid supply valve, 2.6-first return liquid valve, 2.7-second return liquid valve, 3.1-water pump, 3.2-liquid supply pipe, 3.3-return pipe, 3.4-stop valve, 4-water source heat pump host, 4.1-condenser, 4.2-evaporator. DETAILED DESCRIPTION

[0026] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0027] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0028] Example:

[0029] A flow regulating outdoor platform suitable for both winter and summer, consisting of an outdoor platform, an external circulation system outside the platform, and an internal circulation system inside the platform:

[0030] The outdoor platform includes a shell 1.1 and a heat exchange filler 1.2 installed in the shell 1.1. A fan 1.3 is provided at the upper end of the shell 1.1, an air outlet 1.4 is provided on the side wall of the shell 1.1, and a liquid accumulation pool 1.5 is provided at the bottom of the shell 1.1 and is connected to the inner cavity of the shell 1.1;

[0031] The platform external circulation system includes a first liquid inlet pipe 2.1, a second liquid inlet pipe 2.2 and a return liquid pipe 2.3. One end of the first liquid inlet pipe 2.1 is connected to the side wall of the shell 1.1, and the other end of the first liquid inlet pipe 2.1 is connected to the outlet of the condenser 4.1 of the water source heat pump host 4. One end of the second liquid inlet pipe 2.2 is connected to the outlet of the evaporator 4.2 of the water source heat pump host 4. One end of the return liquid pipe 2.3 is connected to the first return liquid branch pipe 2.31 and the second return liquid branch pipe 2.32. The first return liquid branch pipe 2.31 and the second return liquid branch pipe 2.32 are respectively connected to the water source heat pump host 4. The outlet end of the evaporator 4.2 of the pump main unit 4 and the outlet end of the condenser 4.1 of the water source heat pump main unit 4, as well as the other ends of the return liquid pipe 2.3 and the second liquid inlet pipe 2.2, are all connected to the liquid accumulating pool 1.5. Specifically, the other ends of the return liquid pipe 2.3 and the second liquid inlet pipe 2.2 are respectively installed on the bottom and the side wall of the liquid accumulating pool 1.5. The first liquid inlet pipe 2.1 and the second liquid inlet pipe 2.2 are respectively provided with a first liquid supply valve 2.4 and a second liquid supply valve 2.5. The first liquid return branch pipe 2.31 and the second liquid return branch pipe 2.32 are respectively provided with a first liquid return valve 2.6 and a second liquid return valve 2.7.

[0032] The platform internal circulation system includes a water pump 3.1, a liquid supply pipe 3.2 and a return pipe 3.3. The liquid inlet end of the water pump 3.1 is connected to the liquid accumulation pool 1.5 through the liquid supply pipe 3.2. One end of the return pipe 3.3 is connected to the liquid outlet end of the water pump 3.1, and the other end of the return pipe 3.3 is fixed to the side wall of the shell 1.1. A stop valve 3.4 is also provided on the return pipe 3.3.

[0033] Specifically, the present invention is divided into two working conditions during the working process, namely summer and winter conditions. When the water source heat pump host 4 is in the summer working condition, the first liquid supply valve 2.4 and the second liquid return valve 2.7 of the present invention are controlled to be open, and the second liquid supply valve 2.5 and the first liquid return valve 2.6 are closed. The condensed water of the condenser 4.1 of the water source heat pump host 4 flows into the shell 1.1 through the first liquid inlet pipe 2.1 and falls on the heat exchange filler 1.2 under the action of gravity. The outdoor air enters the interior of the shell 1.1 through the air outlet 1.4 under the action of the fan 1.3 and interacts with the condensed water on the heat exchange filler 1.2. The outdoor air exchanges heat and mass with the condensed water and takes away the heat of the condensed water. Finally, the hot air after heat transfer is continuously discharged into the atmosphere under the action of the fan 1.3, which ultimately has the effect of cooling the condensed water. The cooled condensed water flows into the liquid accumulation pool 1.5 and flows back to the condenser 4.1 of the water source heat pump host 4 through the return liquid pipe 2.3 and the second return liquid branch pipe 2.32 to continue to participate in the heat cycle.

[0034] More specifically, when the water source heat pump host 4 is in winter working condition, the first liquid supply valve 2.4 and the second liquid return valve 2.7 of the present invention are controlled to be closed, the second liquid supply valve 2.5 and the first liquid return valve 2.6 are opened, and the stop valve 3.4 is opened. The antifreeze in the evaporator 4.2 of the water source heat pump host 4 flows into the liquid accumulation pool 1.5 through the second liquid inlet pipe 2.2, and the water pump 3.1 delivers the antifreeze in the liquid accumulation pool 1.5 into the housing 1.1 through the liquid supply pipe 3.2 and the return pipe 3.3. Similarly, the antifreeze falls on the heat exchange filler 1.2 under the action of gravity, and the outdoor air is also blown by the fan 1.3. Under the action of the antifreeze, the antifreeze enters the interior of the shell 1.1 through the air outlet 1.4 and interacts with the antifreeze on the heat exchange filler 1.2 to exchange heat and mass. The antifreeze absorbs the sensible heat and latent heat of the outdoor air, and the temperature of the antifreeze increases. The air after heat exchange is discharged into the atmosphere under the action of the fan 1.3, and the heated antifreeze falls into the liquid accumulation pool 1.5. Part of the antifreeze in the liquid accumulation pool 1.5 is circulated back to the evaporator 4.2 of the water source heat pump main unit 4 through the return pipe 2.3 and the first return branch pipe 2.31, and the other part of the antifreeze continues to circulate to the outdoor platform through the water pump 3.1 for heat and mass exchange.

[0035] It should be noted that in the above embodiment, in summer, the condensed water flowing through the first liquid inlet pipe 2.1 has a high flow rate and can be directly fed into the outdoor platform for heat exchange. However, in winter, the antifreeze liquid flowing through the second liquid inlet pipe 2.2 has a low flow rate. If it is still directly fed into the outdoor platform, it will cause uneven water flow and low heat exchange rate. Therefore, the present invention uses water pump 3.1 to perform heat exchange in the outdoor platform in winter, and circulates the antifreeze liquid directly within the liquid sump 1.5, thereby preventing it from entering the outdoor platform, thereby achieving the purpose of efficient heat exchange.

[0036] In the above embodiment, as a preferred embodiment, the outdoor platform also includes a manifold 1.6 fixed in the inner cavity of the shell 1.1 and located between the heat exchange filler 1.2 and the fan 1.3. The first liquid inlet pipe 2.1 and the return pipe 3.3 are connected to the manifold 1.6. A plurality of nozzles 1.7 are also arranged at equal intervals on the manifold 1.6. The spraying direction of the nozzles 1.7 is set upward or downward. When the coolant or antifreeze enters the shell 1.1, the coolant and antifreeze can be sprayed through the manifold 1.6 and the nozzles 1.7, so that the liquid falling on the heat exchange filler 1.2 is more uniform, thereby enhancing the heat exchange effect of the present invention.

[0037] In the above embodiment, as a preferred embodiment, the air outlet 1.4 is arranged on the side walls around the shell 1.1, and each air outlet 1.4 is provided with an air guide plate 1.8, and the installation height of the air guide plate 1.8 is the same as that of the heat exchange filler 1.2. Through the above arrangement, the air intake amount entering the shell 1.1 can be increased and the air intake effect can be enhanced, thereby further enhancing the heat exchange effect of the present invention.

[0038] In the above embodiment, as a preferred embodiment, the amount of liquid pumped per unit time by the water pump 3.1 is the same as the flow rate per unit time at the outlet of the condenser 4.1, so that the flow rate of the antifreeze during heat exchange is the same as the flow rate of the condensed water during heat exchange in summer, which can make the heat exchange efficiency of the antifreeze in winter basically the same as the heat exchange efficiency of the condensed water in summer, thereby enhancing the heat exchange effect of the antifreeze.

[0039] In the above embodiment, as a preferred embodiment, the capacity of the liquid accumulation pool 1.5 is greater than the amount of liquid pumped by the water pump 3.1 during five minutes of normal operation, to prevent the water pump 3.1 from idling due to insufficient liquid in the liquid accumulation pool 1.5 and thus damaging the water pump 3.1.

[0040] In the above embodiment, as a preferred embodiment, a wind tube 1.9 is provided at the upper end of the housing 1.1, and the fan 1.3 is installed at the upper end of the housing 1.1 through the wind tube 1.9. By providing the wind tube 1.9, the exhaust efficiency of the fan 1.3 is enhanced, thereby enhancing the heat exchange efficiency of the platform.

[0041] The above-described embodiments merely represent specific implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A flow regulation outdoor platform suitable for both winter and summer, characterized by: It consists of an outdoor platform, an external circulation system on the platform, and an internal circulation system on the platform: The outdoor platform includes a shell and a heat exchange filler installed in the shell, a fan is provided at the upper end of the shell, an air outlet is provided on the side wall of the shell, and a liquid accumulation pool is provided at the bottom of the shell and is connected to the inner cavity of the shell; The platform external circulation system includes a first liquid inlet pipe, a second liquid inlet pipe and a return liquid pipe, one end of the first liquid inlet pipe is connected to the side wall of the shell, the other end of the first liquid inlet pipe is connected to the condenser outlet of the water source heat pump host, and one end of the second liquid inlet pipe is connected to the evaporator outlet of the water source heat pump host, one end of the return liquid pipe is connected to the first return liquid branch pipe and the second return liquid branch pipe, the first return liquid branch pipe and the second return liquid branch pipe are respectively connected to the evaporator outlet end and the condenser outlet end of the water source heat pump host, the other ends of the return liquid pipe and the second liquid inlet pipe are both connected to the liquid accumulation pool, the first liquid inlet pipe and the second liquid inlet pipe are respectively provided with a first liquid supply valve and a second liquid supply valve, and the first return liquid branch pipe and the second return liquid branch are respectively provided with a first liquid return valve and a second liquid return valve; The internal circulation system of the platform includes a water pump, a liquid supply pipe and a return pipe. The liquid inlet end of the water pump is connected to the liquid accumulation pool through the liquid supply pipe. One end of the return pipe is connected to the liquid outlet end of the water pump, and the other end of the return pipe is fixed on the side wall of the outer shell; the outdoor platform also includes a manifold fixed in the inner cavity of the outer shell and located between the heat exchange filler and the fan, and the first liquid supply pipe and the return pipe are connected to the manifold; a plurality of nozzles are arranged at equal intervals on the manifold, and the spraying direction of the nozzles is set upward or downward; the air outlets are arranged on the side walls around the outer shell, and each air outlet is provided with a wind guide plate.

2. The outdoor flow regulation platform suitable for both winter and summer according to claim 1, characterized in that: The installation height of the air guide plate is the same as that of the heat exchange filler.

3. The outdoor flow regulation platform suitable for both winter and summer according to claim 1, characterized in that: The other ends of the liquid return pipe and the second liquid inlet pipe are respectively installed on the bottom of the liquid accumulation pool and the side wall of the liquid accumulation pool.

4. The outdoor flow regulation platform suitable for both winter and summer according to claim 1, characterized in that: The amount of liquid pumped per unit time by the water pump is the same as the flow rate per unit time at the condenser outlet.

5. The outdoor flow regulation platform suitable for both winter and summer according to claim 1, characterized in that: The capacity of the liquid accumulation pool is greater than the amount of liquid pumped by the water pump during five minutes of normal operation.

6. The outdoor flow regulation platform suitable for both winter and summer according to claim 1, characterized in that: A stop valve is provided on the reflux pipe.

7. The outdoor flow regulation platform suitable for both winter and summer according to claim 1, characterized in that: The upper end of the shell is provided with a wind tube, and the fan is installed on the upper end of the shell through the wind tube.

Images