CN215321893U - Ice storage parking air conditioning system with double evaporators - Google Patents
Ice storage parking air conditioning system with double evaporators Download PDFInfo
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- CN215321893U CN215321893U CN202120245696.XU CN202120245696U CN215321893U CN 215321893 U CN215321893 U CN 215321893U CN 202120245696 U CN202120245696 U CN 202120245696U CN 215321893 U CN215321893 U CN 215321893U
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Abstract
The utility model discloses an ice storage parking air conditioning system with double evaporators designed for a truck, which comprises a condenser connected with an air conditioning compressor, wherein the outlet of the condenser is respectively connected with an air conditioning module and a refrigerating module through an electronic three-way valve; the air conditioning module comprises a temperature sensor, a primary throttle valve and a primary evaporator which are connected from an outlet a of the electronic three-way valve; the refrigerating module comprises a second-stage throttling valve and a second-stage evaporator which are connected from an outlet b of the electronic three-way valve, outlets of the two-stage evaporators are respectively connected to two inlets of the ejector, and the second-stage evaporator is connected with an ice storage device for heat exchange; the ejector is communicated with the air conditioner compressor. The ice storage parking air conditioning system has an air conditioning working condition and an air conditioning and ice making working condition; after the truck is started, ice storage can be started until ice storage is finished while the constant temperature in the truck is maintained in the running process of the truck, and the ice storage device releases cold in the parking process, so that the truck has the advantages of low oil consumption, good comfort and low noise.
Description
Technical Field
The utility model relates to a parking air conditioner control system, in particular to an ice storage parking air conditioner control system with double evaporators, which is designed for trucks.
Background
Trucks are often in a long-term driving state, and cargo loading and unloading and traffic jam waiting conditions are inevitable. In summer, when the driver of the truck waits in the vehicle, the temperature in the cab rises to 50-60 ℃ in a short time without starting the air conditioner for cooling, which is hard to bear by the human body. If the original truck air conditioner is started for refrigeration, the mechanical compressor of the original truck air conditioner is driven by the engine through the belt pulley, so that the engine is required to be in an idling state when the air conditioner is started for refrigeration in the process of parking and waiting of the truck.
However, the oil consumption of the engine is high when the engine is idling, and data show that the oil consumption of the air conditioner is up to 6L/h when the engine is started at the idling, the oil consumption is calculated according to the unit price of 0# diesel oil of 5.5 yuan/L, and the cost for starting the air conditioner is 33 yuan/h when the engine is idling, so that the energy conservation and the environmental protection are not facilitated, and the economic burden is also caused to a driver.
In addition, the noise is big when engine and air condition compressor operate simultaneously, has data display, and the noise is 60dB in the driver's cabin when general truck idles, and the quiet environment of comparatively ideal is 0 ~ 40dB, therefore seriously influences driver and crew's in the driver's cabin normal rest when engine and air condition compressor operate simultaneously, and then influences driving safety even.
The existing parking air conditioner schemes, such as air-cooled diesel engine air conditioners and household air conditioner refitting, have the problems of limited energy-saving degree, high noise and power utilization risk.
The ice storage technology is originally a technology that cold energy is stored in a cold storage medium when electricity is used at a valley at night and is released when electricity is used at a peak at daytime.
SUMMERY OF THE UTILITY MODEL
Aiming at the prior art, the utility model applies the ice storage technology with the characteristic of 'peak shifting and valley filling' to the design of the parking air conditioner, and provides an ice storage parking air conditioner system with double evaporators.
In order to solve the technical problem, the utility model provides an ice storage parking air conditioning system with double evaporators, which comprises an air conditioning compressor and a condenser which are sequentially connected with an engine, wherein the outlet of the condenser is respectively connected with an air conditioning module and a refrigerating module through an electronic three-way valve; the air conditioning module comprises a primary throttle valve and a primary evaporator which are sequentially connected from a first outlet of the electronic three-way valve, the primary evaporator is connected to a first inlet of the ejector, and a connecting pipeline between the primary evaporator and the ejector is provided with a temperature sensor; the refrigeration module comprises a secondary throttle valve and a secondary evaporator which are sequentially connected from a second outlet of the electronic three-way valve, the secondary evaporator is connected to a second inlet of the ejector, and the secondary evaporator is connected with an ice storage device for heat exchange; the ejector is communicated with the air conditioner compressor.
Further, the ice-storing parking air conditioning system with double evaporators according to the present invention, wherein:
the temperature sensor transmits a temperature signal in the vehicle to the electronic three-way valve.
The refrigerating capacity of the air conditioner compressor is larger than the heat gain of the cab of the truck in the same time.
The ice storage device comprises an ice storage tank and a fan, the secondary evaporator is arranged in the ice storage tank of the ice storage device, and the ice storage device is arranged at the top of the interior of a truck cab; and the ice storage device is directly cooled by the fan when releasing cold energy.
The ejector adopts a high-pressure refrigerant to eject a low-pressure refrigerant, and a mixed fluid outlet of the ejector is connected with a mixed refrigerant inlet of the air-conditioning compressor.
And a polyethylene heat-insulating material with the thickness of 50mm is additionally arranged on the periphery of the ice storage tank.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the ice storage parking air conditioning system with the double evaporators is additionally provided with the primary evaporator and the ice storage device on the basis of the original air conditioning system of the truck, so that ice can be stored for the ice storage device on the premise of meeting the refrigeration requirement in a cab in the driving process of the truck, and the ice storage parking air conditioning system is convenient to use in parking.
(2) The utility model has excellent energy-saving performance. The ejector is added in the system, so that the problem that the pressures of two-stage refrigerant fluid reaching the compressor are different is solved, and compared with the method that a fluid pump is added at a corresponding position, the ejector does not consume power and has an energy-saving effect.
(3) Generally, the oil consumption of the truck air conditioner accounts for 10% of the total oil consumption, the heat load of a truck cab is 2500W, the maximum refrigerating capacity of an original truck air conditioner is 4000W, and under the conditions, the ice storage parking air conditioner system with the double evaporators saves 10% of diesel oil compared with the original truck air conditioner scheme.
(4) The ice storage device is arranged at the position of the roof inside the cab, so that the narrow space in the cab is reasonably utilized, and the moving space of a driver is not occupied.
(5) When the automobile is parked and waiting, the engine and the compressor do not work when the ice storage device releases cold, and the noise generated when the fan works is only 35dB, so that a silent rest environment is provided for a driver, and the following driving safety of the driver is facilitated.
(6) The ice storage parking air conditioning system with the double evaporators has the advantages of convenience in modification and low modification cost. The utility model does not change the structure of the original air conditioning system of the truck, but adds a little equipment on the basis, thus being easy to reform; the reconstruction cost is only about 1400 yuan, and the investment cost can be recovered in about 2 months.
Drawings
FIG. 1 is a schematic structural view of an ice-accumulating parking air conditioning system having a dual evaporator according to the present invention.
In the figure:
1-engine 2-air-conditioning compressor 3-condenser 4-electronic three-way valve
5-ejector 11-first-stage throttle valve 12-first-stage evaporator 13-temperature sensor
21-two-stage throttle valve 22-two-stage evaporator 23-ice storage tank 24-fan
Detailed Description
The utility model will be further described with reference to the following figures and specific examples, which are not intended to limit the utility model in any way.
In the description of the present invention, it should be noted that the terms "first", "second", "primary", and "secondary" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in figure 1, the ice storage parking air conditioning system with double evaporators comprises an air conditioning compressor 2 and a condenser 3 which are sequentially connected with an engine 1, wherein the outlet of the condenser 3 is respectively connected with an air conditioning module and a refrigerating module through an electronic three-way valve 4. The engine 1 is connected with the air-conditioning compressor 2 through a belt pulley, and provides a power source for the refrigerant circulation of the whole system.
The air conditioning module comprises a first-stage throttling valve 11 and a first-stage evaporator 12 which are sequentially connected with a first outlet of an electronic three-way valve 4, an outlet of the first-stage evaporator 12 is connected to a nozzle of an ejector 5, the first-stage evaporator 12 is connected with a connecting pipeline of the ejector 5, a temperature sensor 13 is arranged on the connecting pipeline of the ejector 5, a temperature signal in the vehicle is transmitted to the electronic three-way valve 4 through the temperature sensor 13, the electronic three-way valve 4 can adjust the flow of a refrigerant at the outlet according to a signal, and the refrigerating capacity of the air conditioner compressor 2 is larger than the heat of a cab of the truck in the same time.
The refrigeration module comprises a second-stage throttle valve 21 and a second-stage evaporator 22 which are sequentially connected from a second outlet of the electronic three-way valve 4, an outlet of the second-stage evaporator 22 is connected with an inlet of a receiving chamber of the ejector 5, the second-stage evaporator 22 is connected with an ice storage device for heat exchange, and in order to reduce the heat exchange area and further reduce the volume of the equipment, a heat exchanger with a large heat exchange coefficient is selected. The ice storage device includes an ice storage tank 23 and a fan 24, and the secondary evaporator 22 is disposed in the ice storage tank 23 in order to enhance heat exchange between the secondary evaporator 22 and the ice storage tank 23. The ice storage tank 23 is installed on the roof inside the cab, and is designed to be a cuboid with the length and width similar to the size of the roof inside and the appropriate thickness, and meets the requirement of the total refrigerating capacity.
The secondary evaporator 22 is arranged in the ice storage tank 23, and in order to reduce the loss of cold energy, a polyethylene heat-insulating material with the thickness of 50mm is additionally arranged at the periphery of the ice storage device. The ice storage device is arranged at the top of the interior of the truck cab; the ice storage device is blown directly cold by the fan 24 when releasing cold. The ejector 5 is communicated with the air-conditioning compressor 2, as shown in fig. 1, the ejector 5 ejects low-pressure refrigerant by adopting high-pressure refrigerant, and a mixed fluid outlet of the ejector 5 is connected with a mixed refrigerant inlet of the air-conditioning compressor 2.
The working principle of the ice storage parking air conditioning system with the double evaporators is as follows: the ice storage device is used for storing cold in the running process of the truck, and the cold quantity is released in the parking process, so that the oil consumption of the truck for starting the air conditioner for refrigeration in an idling state is avoided, and the better oil consumption and carbon emission of the parking air conditioner are realized. The ice storage tank is arranged at the top of the cab, so that the vacant space in the cab is fully utilized. When the ice storage device releases cold, the engine and the compressor do not work, the silencing performance is good, and a quiet resting environment can be provided for drivers and passengers.
The ice storage parking air conditioning system has two working conditions, wherein one working condition is an air conditioning working condition, and the other working condition is an air conditioning and ice making working condition; after the truck is started, the air conditioner is operated in the running process of the truck, the air conditioner and the ice making working condition are operated after the temperature in the truck reaches the set temperature, ice storage is started until ice storage is finished while the constant temperature in the truck is maintained, and the ice storage device is used for releasing cold energy to refrigerate the truck when the truck is parked.
In the utility model, in order to meet the refrigerating capacity requirement of the air conditioner and ice storage working condition, the maximum refrigerating capacity of the air conditioner compressor 2 is 4000W, and the heat load of the vehicle body is 2500W.
When the truck is just started, the air conditioner is turned on for refrigeration, and a single air conditioner working condition is operated at the moment for the purpose of quickly cooling the cab. The working condition of the air conditioner is that a low-temperature low-pressure gas refrigerant is compressed by an air conditioner compressor 2 to become a high-temperature high-pressure gas refrigerant, the high-temperature high-pressure gas refrigerant is condensed by a condenser 3 to become a high-temperature high-pressure liquid refrigerant, the high-temperature high-pressure liquid refrigerant enters an inlet of the electronic three-way valve 4, the electronic three-way valve 4 is opened and communicated with an outlet a of the primary throttle valve 11, the refrigerant sequentially passes through the primary throttle valve 11 and the primary evaporator 12 to take away heat in a cab, and finally the refrigerant returns to the air conditioner compressor 2 again through the ejector 5 to enter the next cycle; under the condition that the air conditioner operates under the working condition, the temperature sensor 13 monitors the temperature in the vehicle in real time, when the temperature of the air in the vehicle reaches the set temperature, the outlet a of the electronic three-way valve reduces the flow rate of the refrigerant flowing into the primary throttle valve 11, and only the heat removed from the cab by the primary evaporator 12 in unit time is equal to the heat obtained by the cab in unit time, so that the cab is kept in the constant temperature state of the set temperature.
The air conditioner and ice making working conditions are as follows: when the temperature of the air in the vehicle reaches a set temperature, the temperature sensor 13 transmits a signal to the electronic three-way valve 4, an outlet b of the electronic three-way valve 4 communicated with the secondary throttle valve 21 is opened, a part of refrigerant flowing into the secondary throttle valve 21 is used for storing ice, the evaporation temperature of the refrigerant in the secondary evaporator 22 is set to-10 ℃ by adjusting the opening degree of the secondary throttle valve 21, the refrigerant flows through the secondary evaporator 22 to exchange heat with water in the ice storage tank 23, and the water is made into ice until the ice is fully stored. In the working condition of air conditioner and ice making, the process for realizing the air conditioner is consistent with the process of the working condition operation of the air conditioner, the pressure of the refrigerant at the outlet of the first-stage evaporator 12 is higher, the pressure of the refrigerant at the outlet of the second-stage evaporator 22 is lower, and in order to ensure that the pressures of the two-stage refrigerants flowing into the compressor 2 are the same, an ejector 5 is arranged in front of the compressor 2. The refrigerant flowing out of the primary evaporator 12 flows into the receiving chamber from the nozzle of the ejector 5, the refrigerant flowing out of the secondary evaporator 22 is ejected into the mixing chamber of the ejector 5 by the high-pressure refrigerant flowing out of the primary evaporator 12, and the finally mixed refrigerant enters the compressor 2 at the same pressure.
When the truck is parked, the engine 1 is turned off and the fan 24 is used to blow the ice storage device directly to cool the interior of the truck.
In conclusion, the ice storage parking air conditioning system with the double evaporators realizes the storage of cold energy in the driving process of the truck and the release of the stored cold energy in the parking process. The system has the advantages of low oil consumption, low carbon emission and low refrigeration noise during parking, is favorable for coping with increasingly strict emission policies, relieves the economic burden of a driver of the truck, and provides a quiet rest environment for drivers and passengers during parking.
While the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are illustrative only and not restrictive, and various modifications which do not depart from the spirit of the present invention and which are intended to be covered by the claims of the present invention may be made by those skilled in the art.
Claims (6)
1. An ice storage parking air conditioning system with double evaporators comprises an air conditioning compressor (2) and a condenser (3) which are sequentially connected with an engine (1), and is characterized in that an outlet of the condenser (3) is respectively connected with an air conditioning module and a refrigerating module through an electronic three-way valve (4);
the air conditioning module comprises a primary throttle valve (11) and a primary evaporator (12) which are sequentially connected from a first outlet of the electronic three-way valve (4), the primary evaporator (12) is connected to a first inlet of the ejector (5), and a connecting pipeline between the primary evaporator (12) and the ejector (5) is provided with a temperature sensor (13);
the refrigeration module comprises a secondary throttle valve (21) and a secondary evaporator (22) which are sequentially connected from a second outlet of the electronic three-way valve (4), the secondary evaporator (22) is connected to a second inlet of the ejector (5), and the secondary evaporator (22) is connected with an ice storage device for heat exchange;
the ejector (5) is communicated with the air conditioner compressor (2).
2. Ice-accumulating parking air-conditioning system with double evaporator according to claim 1, characterized in that the temperature sensor (13) transmits the temperature signal inside the vehicle to the electronic three-way valve (4).
3. Ice-accumulating parking air-conditioning system with double evaporator according to claim 1, characterized in that the cooling capacity of the air-conditioning compressor (2) is greater than the heat gain of the truck cab in the same time.
4. Ice storage parking air conditioning system with dual evaporator according to claim 1, characterized in that the ice storage device comprises an ice storage tank (23) and a fan (24), the secondary evaporator (22) being placed in the ice storage tank (23), the ice storage device being placed at the roof inside the truck cab; the ice storage device is directly cooled by the fan (24) when releasing cooling energy.
5. The ice-storage parking air-conditioning system with double evaporators according to claim 1, characterized in that the ejector (5) ejects low-pressure refrigerant by high-pressure refrigerant, and the mixed fluid outlet of the ejector (5) is connected with the mixed refrigerant inlet of the air-conditioning compressor (2).
6. Ice storage parking air conditioning system with double evaporator according to claim 4, characterized in that the ice storage tank (23) is peripherally filled with a 50mm thick polyethylene insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120245696.XU CN215321893U (en) | 2021-01-28 | 2021-01-28 | Ice storage parking air conditioning system with double evaporators |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120245696.XU CN215321893U (en) | 2021-01-28 | 2021-01-28 | Ice storage parking air conditioning system with double evaporators |
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| Publication Number | Publication Date |
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| CN215321893U true CN215321893U (en) | 2021-12-28 |
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| CN202120245696.XU Active CN215321893U (en) | 2021-01-28 | 2021-01-28 | Ice storage parking air conditioning system with double evaporators |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112776566A (en) * | 2021-01-28 | 2021-05-11 | 天津大学 | Ice storage parking air conditioning system with double evaporators and control method |
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- 2021-01-28 CN CN202120245696.XU patent/CN215321893U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112776566A (en) * | 2021-01-28 | 2021-05-11 | 天津大学 | Ice storage parking air conditioning system with double evaporators and control method |
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