CN109269152B - Compressor heat exchange device and vehicle - Google Patents
Compressor heat exchange device and vehicle Download PDFInfo
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- CN109269152B CN109269152B CN201810961424.2A CN201810961424A CN109269152B CN 109269152 B CN109269152 B CN 109269152B CN 201810961424 A CN201810961424 A CN 201810961424A CN 109269152 B CN109269152 B CN 109269152B
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- compressor
- heat exchange
- temperature
- branch pipe
- exchange channel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3232—Cooling devices using compression particularly adapted for load transporting vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/006—Cooling of compressor or motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides a compressor heat exchange device and a vehicle, wherein the compressor heat exchange device comprises a heat exchange channel arranged on a compressor, and the heat exchange channel comprises a first opening; one end of the first branch pipe is used for being connected with a cooling pipeline of an engine cooling system, and the other end of the first branch pipe is used for being connected with the first opening; and a control valve provided on the first branch pipe; the control valve can control the first branch pipe to be communicated, so that the cooling liquid in the cooling pipeline enters the heat exchange channel through the first branch pipe to cool or heat the compressor. According to the invention, the heat exchange channel is added on the compressor driven by the conventional vehicle-mounted engine and is connected with the vehicle engine cooling system, so that the temperature of the compressor can be effectively reduced in high-temperature weather, and the compressor is prevented from being damaged due to overheating; when the compressor is started in cold environment at low temperature, the compressor can be preheated in advance, and the liquid impact risk is reduced.
Description
Technical Field
The invention relates to the field of compressors, in particular to a heat exchange device of a compressor and a vehicle.
Background
In a non-independent refrigerating unit of an existing vehicle (such as a truck), a compressor is driven by an engine, and when the vehicle runs in a high-temperature weather, the temperature of the compressor is very high, so that the quality of lubricating oil and sealing parts of the compressor are damaged, and the compressor is damaged; the compressor is started cold in low-temperature weather, and is easily damaged by liquid impact; when the hot gas bypass heating or defrosting function is started in low-temperature weather, the heating or defrosting speed is slow.
Disclosure of Invention
The invention provides a compressor heat exchange device and a vehicle.
Specifically, the invention is realized by the following technical scheme:
according to a first aspect of the present invention, there is provided a compressor heat exchanging device applied to a vehicle, the vehicle including an engine cooling system, comprising:
the heat exchange channel is arranged on the compressor and comprises a first opening and a second opening;
the first branch pipe is used for connecting a cooling pipeline of the engine cooling system at one end and connecting the first opening at the other end; and a control valve provided on the first branch pipe;
the control valve can control the first branch pipe to be communicated, so that the cooling liquid in the cooling pipeline enters the heat exchange channel through the first branch pipe to cool or heat the compressor.
Optionally, the method further comprises:
a temperature sensor for detecting a discharge temperature of the compressor or an ambient temperature;
the controller is electrically connected with the control valve and the temperature sensor respectively;
the controller controls the control valve to be opened to conduct the first branch pipe when judging that the exhaust temperature or the environment temperature is higher than a first temperature threshold value, or when judging that the exhaust temperature or the environment temperature is lower than a second temperature threshold value, wherein the first temperature threshold value is larger than the second temperature threshold value.
Optionally, the controller controls the control valve to open when it is determined that the exhaust temperature or the ambient temperature is lower than a second temperature threshold, and controls the control valve to close and start the compressor if it is determined that the exhaust temperature or the ambient temperature is higher than a third temperature threshold.
Optionally, the heat exchange channel is formed in a casing of the compressor.
Optionally, the heat exchange channel is a water pipe coil, and the water pipe coil is wound around or embedded in the casing of the compressor.
Optionally, the heat exchange channel comprises a plurality of channels.
Optionally, the control valve is a solenoid valve.
Optionally, the heat exchange channel further comprises a second opening;
the device further comprises: one end of the second branch pipe is used for being connected with the second opening, and the other end of the second branch pipe is used for being connected with the cooling pipeline;
the coolant liquid in the heat exchange channel flows through the second opening and the second branch pipe in sequence and then flows back to the cooling pipeline, or the coolant liquid flowing out of the engine flows into the second opening through the second branch pipe, flows through the heat exchange channel and then flows out of the first opening, and flows through the first branch pipe to circulate to the cooling pipeline.
According to a second aspect of the present invention, there is provided a vehicle comprising:
an engine;
an engine cooling system including a cooling duct for circulating a coolant to cool the engine;
a refrigeration unit, the refrigeration unit including a compressor; and
the heat exchange device of the compressor.
Optionally, the compressor includes a casing made of cast aluminum.
According to the technical scheme provided by the embodiment of the invention, the heat exchange channel is additionally arranged on the compressor driven by the conventional vehicle-mounted engine and is connected with the vehicle engine cooling system, so that the temperature of the compressor can be effectively reduced in high-temperature weather, and the compressor is prevented from being damaged due to overheating; when the compressor is started in a low-temperature air cooling mode, the compressor can be preheated in advance, and the liquid impact risk is reduced; when the low-temperature weather heating or defrosting operation is carried out, the heating capacity or the defrosting speed can be improved by increasing the temperature of the compressor.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural view of a vehicle in the related art;
fig. 2 is a schematic view of a related art refrigeration unit;
FIG. 3 is a schematic illustration of a vehicle according to an exemplary embodiment of the present invention;
FIG. 4 is a block diagram illustrating a heat exchange apparatus of a compressor in accordance with an exemplary embodiment of the present invention;
FIG. 5 is a cross-sectional schematic view of a compressor illustrating an exemplary embodiment of the present invention, wherein the dashed lines are the flow paths of the cooling fluid in the compressor;
fig. 6 is a perspective view illustrating a compressor according to an exemplary embodiment of the present invention.
Reference numerals: 100: an engine; 200: an engine cooling system; 210: a cooling duct; 220: a pump; 230: a heat sink; 240: a liquid storage tank; 300: a refrigeration unit; 310: a compressor; 311: a housing; 320: a condenser module; 330: an evaporator module; 400: a compressor heat exchange device; 1: a heat exchange channel; 11: a first opening; 12: a second opening; 2: a first branch pipe; 3: a control valve; 4: a second branch pipe; 5: a controller; 6: a temperature sensor.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the related art, referring to fig. 1, a vehicle includes an engine 100, an engine cooling system 200, and a refrigerator group 300.
The engine cooling system 200 includes a cooling pipe 210, a pump 220, a radiator 230, and a reservoir 240, the pump 220 sucks a cooling fluid (such as water) into a cooling channel in the engine 100, and the cooling fluid after cooling the engine 100 is cooled by the radiator 230 and continuously circulates back to the pump 220, so as to recycle the cooling fluid. The pump 220 may draw coolant from the reservoir 240 when there is insufficient coolant in the cooling line 210. Typically, the temperature of the coolant entering the engine 100 is less than a particular temperature threshold (e.g., 80 ℃). The engine cooling system 200 operates in synchronization with the engine 100, that is, when the engine 100 is operating, the engine cooling system 200 cools the engine 100 to prevent the temperature of the engine 100 from becoming too high.
The non-independent refrigeration unit 300 on the vehicle includes a compressor 310, a condenser module 320 (outdoor unit), and an evaporator module 330 (indoor unit), and the compressor 310, the condenser module 320, and the evaporator module 330 are connected by pipes (e.g., hoses). The compressor 310 of the present embodiment is provided with a clutch, and is connected to the engine 100 through a pulley or other power transmission components, when the engine 100 operates, the clutch is closed, and the engine 100 drives the compressor 310 to rotate through the pulley or other power transmission components.
Wherein the condenser module 320 includes a condenser and the evaporator module 330 includes an evaporator. When the refrigerating unit refrigerates, the circulation loop of the refrigerant is as follows: compressor 310- > condenser module 320- > evaporator module 330- > compressor 310. And all the modules are connected through pipelines to form a circulation loop. A flow regulating device 340 may be disposed on the pipeline between the condenser module and the evaporator module for regulating the flow of the refrigerant flowing from the condenser module to the evaporator module. Alternatively, the compressor 310 may be a swash plate type compressor, a wobble type compressor, or another type of compressor.
In summer high-temperature (air temperature >43 ℃) weather, the condenser module 320 is exposed to the environment, the condensing temperature of the system is generally above 50 ℃, the shell 311 and the exhaust temperature of the compressor 310 are too high (exhaust temperature >120 ℃ and shell 311 temperature >100 ℃), the quality of lubricating oil and the sealing parts of the compressor 310 are damaged, and the compressor 310 is damaged. Since the rotation speed of the engine 100 is determined according to the driving demand of the driver, the rotation speed transmitted to the compressor 310 is not controllable. In a high temperature environment, if the rotation speed of the compressor 310 is too high, the temperature of the casing 311 and the exhaust gas of the compressor 310 may be further increased.
For this, the related art cools the compressor 310 through the liquid spraying system of the compressor 310, and specifically, an exhaust temperature sensor or a switch is disposed on the exhaust pipe of the compressor 310; referring to fig. 2, a spray branch (shown in fig. 2) is provided between the outlet of the condenser and the suction pipe of the refrigeration system, and a first solenoid valve 350 (normally closed) is provided on the spray branch. When the discharge temperature sensor or switch detects that the discharge temperature of the compressor 310 is higher than a predetermined value, the first solenoid valve 350 is opened, and a portion of the liquid refrigerant is sucked into the suction pipe of the compressor 310 and vaporized to absorb heat, thereby cooling the compressor 310 to a safe temperature. The liquid spraying branch is provided with a liquid spraying hole to limit the amount of refrigerant flowing during liquid spraying, and the throttling and pressure reducing effects are achieved. Furthermore, the diameter of the liquid ejection orifice cannot be too large, typically <1.0 mm. However, the liquid injection reduces the refrigerant flow in the normal refrigeration circuit, resulting in a 5-15% decrease in refrigerant flow. Furthermore, the decrease of the discharge temperature of the compressor 310 by the liquid jet is limited by the liquid jet hole, and the discharge temperature of the compressor 310 is still too high if the engine 100 rotates at a high speed in a hot weather.
In addition, in the related art, when the discharge temperature of the compressor 310 exceeds the safety value, the compressor 310 is forced to stop working until the discharge temperature is restored to be within the safety value. However, forcing the compressor 310 to stop may cause the refrigeration system to not operate properly, and the low-temperature food or cargo transported by the vehicle may not be stored well, and may eventually deteriorate to cause a user claim.
In winter, in low-temperature weather, after the vehicle is parked overnight, the temperature of the compressor 310 is low, the refrigerant may migrate into the compressor 310, and the compressor 310 is easily damaged due to liquid impact when being started in a cold state. The refrigeration unit 300 generally uses a hot gas bypass method to defrost and heat, the heating amount depends on the temperature of the compressor 310, and when heating is performed in a low-temperature weather, the temperature of the compressor 310 is low, and the heating amount of the unit is not high. As shown in fig. 2, a hot gas defrost/heat bypass is provided between the evaporator and the compressor 310, and a second solenoid valve 360 (normally closed) is provided on the hot gas defrost/heat bypass. When the discharge temperature sensor or switch detects that the discharge temperature of the compressor 310 is lower than a predetermined value, the second solenoid valve 360 is opened, the hot gas defrosting/heating bypass is operated, and the condenser is in a disconnected state, thereby heating the compressor 310.
In order to overcome the defects, the heat exchange channel 1 is additionally arranged on the compressor 310 driven by the conventional vehicle-mounted engine 100 and is connected with the vehicle engine cooling system 200, so that the temperature of the compressor 310 can be effectively reduced in high-temperature weather, and the compressor 310 is prevented from being damaged due to overheating; when the cold starting of low temperature sky, can preheat compressor 310 in advance, reduce the liquid hammer risk.
The compressor heat exchanging device 400 and the vehicle according to the present invention will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
With reference to fig. 3 to fig. 6, an embodiment of the present invention provides a compressor heat exchanging device 400, which is applied to a vehicle having an engine cooling system 200. The compressor heat exchanging apparatus 400 of the present embodiment may include a heat exchanging passage 1, a first branch pipe 2, and a control valve 3. Wherein the heat exchange channel 1 includes the first opening 11, and the heat exchange channel 1 is provided to the compressor 310. One end of the first branch pipe 2 is used for connecting with a cooling pipeline 210 of the engine cooling system 200, the other end is used for connecting with the first opening 11, and the control valve 3 is arranged on the first branch pipe 2. In this embodiment, the control valve 3 can control the first branch pipe 2 to conduct, so that the cooling liquid in the cooling pipeline 210 enters the heat exchange channel 1 through the first branch pipe 2 to cool or heat the compressor 310.
Specifically, when the temperature is high in summer, the control valve 3 is opened to control the first branch pipe 2 to be conducted, and the cooling liquid in the cooling pipeline 210 enters the heat exchange channel 1 through the first branch pipe 2, so that the compressor 310 is cooled.
In cold weather in winter, after the vehicle is started, before the refrigerating unit 300 performs heating or defrosting, the control valve 3 is opened, and the compressor 310 is heated by the cooling liquid, so that the heating amount is increased and the defrosting speed is increased. Specifically, the control valve 3 is opened, and the cooling liquid in the cooling pipe 210 (the temperature of the cooling liquid in winter is generally above 60 ℃) enters the heat exchange passage 1 through the first branch pipe 2, thereby heating the compressor 310.
In addition, when the compressor 310 does not need to be cooled or the compressor 310 does not need to be heated, the first branch pipe 2 can be controlled to be cut off by the control valve 3, and the cooling liquid in the cooling pipeline 210 is prevented from entering the heat exchange channel 1 through the first branch pipe 2.
The type of heat exchange channel 1 may include various types, for example, in one embodiment, in conjunction with fig. 5 and 6, the heat exchange channel 1 is formed in a shell 311 of the compressor 310. In this embodiment, the heat exchange channel 1 is directly formed by the casing 311, and the cooling liquid directly exchanges heat with the casing 311, so that the cooling or heating effect is good. Optionally, the casing 311 is made of a heat conducting material, and when the cooling liquid flows through the heat exchanging channel 1, the heat in the casing 311 can be taken away to the maximum extent or transferred to the casing 311 (to heat the casing 311), so as to cool or heat the compressor 310.
In another embodiment, the heat exchange channels 1 are water tube coils. Optionally, the water pipe coil is wound on the casing 311 of the compressor 310, for example, the water pipe coil is wound on the outer side wall of the casing 311. Alternatively, the water pipe coil is embedded in the casing 311 of the compressor 310, for example, a groove is provided on the outer side wall and/or the inner side wall of the casing 311, and the water pipe coil is embedded in the groove on the outer side wall and/or the inner side wall of the casing 311. As the cooling fluid flows through the water tube coil, the cooling fluid within the water tube coil may carry away heat from the shell 311 or transfer its own heat to the shell 311, thereby cooling or heating the compressor 310.
The heat exchange channel 1 may include one or more heat exchange channels, and in this embodiment, the heat exchange channel 1 includes a plurality of heat exchange channels 1, and the plurality of heat exchange channels 1 are arranged at different positions of the casing 311, so as to sufficiently cool or heat the compressor 310 and to accelerate the cooling or heating speed of the compressor 310.
The heat exchange channel 1 is formed in the casing 311 for illustration, and in this embodiment, the casing 311 is circular. Alternatively, referring to fig. 5 and 6, a plurality of heat exchange channels 1 are parallel to each other, and each heat exchange channel 1 extends along one end of the housing 311 to the other end of the housing 311, and two adjacent heat exchange channels 1 communicate with each other. Alternatively, each heat exchange channel 1 is distributed along the radial direction of the casing 311, and the adjacent heat exchange channels 1 are communicated with each other in the end covers at both ends of the compressor.
The type of the control valve 3 can also be selected according to the need, for example, it can be a solenoid valve, and it can also be other types of control valves.
Further, referring to fig. 3, the heat exchange device 400 of the compressor further includes a second branch pipe 4, and the heat exchange channel 1 further includes a second opening 12. The second branch pipe 4 of the present embodiment has one end for connecting the second opening 12 and the other end for connecting the cooling duct 210. In this embodiment, the cooling liquid in the heat exchange channel 1 sequentially flows through the second opening 12 and the second branch pipe 4 and then flows back to the cooling pipeline 210, so as to realize the recycling of the cooling liquid.
In the above embodiment, the first opening 11 serves as an inlet for the cooling liquid to enter the heat exchange channel 1, and the second opening 12 serves as an outlet for the cooling liquid to flow out from the heat exchange channel 1. In another implementation, to obtain better heating effect, the flow direction of the cooling liquid in the first branch and the second branch can be changed, and specifically, the flow direction of the control valve 3 is controlled, so as to change the flow direction of the cooling liquid in the first branch and the second branch. In this embodiment, the first opening 11 serves as an outlet for the cold liquid flowing out of the heat exchange channel 1, and the second opening 12 serves as an inlet for the cooling liquid entering the heat exchange channel 1. In this embodiment, the coolant flowing out of the engine 100 flows into the second opening 12 through the second branch pipe 4, flows out of the first opening 11 through the heat exchange channel 1, and circulates to the cooling pipe 210 through the first branch pipe 2. Specifically, after flowing through the cooling channel of the engine 100, the coolant flows into the second opening 12 through the second branch pipe 4 and then enters the heat exchange channel 1, and the coolant in the heat exchange channel 1 flows out through the first opening 11 and flows into the cooling pipe 210 through the first branch pipe 2.
In addition, the compressor heat exchange device 400 further comprises a temperature sensor 6 and a controller 5, wherein the controller 5 is electrically connected with the control valve 3 and the temperature sensor 6 respectively.
In one embodiment, the temperature sensor 6 is used to detect the discharge temperature of the compressor 310, for example, the temperature sensor 6 is disposed at the discharge port of the compressor 310, so as to detect the discharge temperature of the compressor 310. When the controller 5 determines that the exhaust temperature is higher than the first temperature threshold or determines that the exhaust temperature is lower than the second temperature threshold, the controller controls the control valve 3 to open so as to conduct the first branch pipe 2. Specifically, in a high temperature period such as summer, when the controller 5 determines that the exhaust temperature is higher than the first temperature threshold, the controller controls the control valve 3 to open so as to conduct the first branch pipe 2, thereby cooling the compressor 310 and preventing the compressor 310 from being damaged due to an excessively high temperature. In a low-temperature time period such as winter, when the controller 5 determines that the exhaust temperature is lower than the second temperature threshold, the controller 3 is controlled to open to conduct the first branch pipe 2, so as to heat the compressor 310 and prevent the compressor 310 from being liquid slugged due to cold start of the compressor 310.
In another embodiment, a temperature sensor 6 is used to detect the ambient temperature. When the controller 5 determines that the ambient temperature is higher than the first temperature threshold or determines that the ambient temperature is lower than the second temperature threshold, the controller controls the control valve 3 to open so as to conduct the first branch pipe 2. Specifically, in a high temperature period such as summer, when the controller 5 determines that the ambient temperature is higher than the first temperature threshold, the controller controls the control valve 3 to open so as to conduct the first branch pipe 2, thereby cooling the compressor 310 and preventing the compressor 310 from being damaged due to an excessively high temperature. In a low-temperature time period such as winter, when the controller 5 determines that the ambient temperature is lower than the second temperature threshold, the controller 3 is controlled to open to conduct the first branch pipe 2, so as to heat the compressor 310 and prevent the compressor 310 from being liquid slugged due to cold start of the compressor 310. In addition, when the low-temperature weather heating or defrosting operation is performed, the heating capacity or the defrosting speed can be increased by increasing the temperature of the compressor 310.
In the above embodiment, the first temperature threshold is greater than the second temperature threshold. The first temperature threshold and the second temperature threshold may be set as required, and in this embodiment, the first temperature threshold is greater than 100 ℃, and the second temperature threshold is less than 0 ℃, for example, the first temperature threshold may be 110 ℃, and the second temperature threshold may be-10 ℃.
Further, when the controller 5 determines that the exhaust temperature or the ambient temperature is lower than the second temperature threshold, the controller controls the control valve 3 to open, and then, if the exhaust temperature or the ambient temperature is higher than the third temperature threshold, the controller controls the control valve 3 to close and starts the compressor 310 to prevent the compressor 310 from liquid impact caused by cold start.
Referring to fig. 3, the embodiment of the present invention further provides a vehicle, which includes an engine 100, an engine cooling system 200, a refrigeration unit 300, and the compressor heat exchanging device 400 of the above embodiment. The engine cooling system 200 includes a cooling pipe 210 for circulating a cooling fluid to cool the engine 100, and the refrigerator group 300 includes a compressor 310.
In the present embodiment, the compressor 310 includes a casing 311, and the casing 311 is made of a heat conductive material, and optionally, the casing 311 is made of a cast aluminum material.
In addition, the refrigeration unit 300 of the present embodiment further has a heating function, and specifically, in the heating process, the refrigerant circuit includes: the compressor 310- > the evaporator module 330- > the compressor 310, and the high-temperature and high-pressure refrigerant output by the compressor 310 enters the evaporator module 330 to exchange heat to realize heating.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A compressor heat exchange device is applied to a vehicle, the vehicle comprises an engine cooling system, and the compressor heat exchange device is characterized by comprising:
the heat exchange channel is arranged on the compressor and comprises a first opening;
the first branch pipe is used for connecting a cooling pipeline of the engine cooling system at one end and connecting the first opening at the other end; and a control valve provided on the first branch pipe;
the control valve can control the conduction of the first branch pipe, so that the cooling liquid in the cooling pipeline enters the heat exchange channel through the first branch pipe to cool or heat the compressor;
a temperature sensor for detecting a discharge temperature of the compressor or an ambient temperature;
the controller is electrically connected with the control valve and the temperature sensor respectively;
the controller controls the control valve to be opened to conduct the first branch pipe when judging that the exhaust temperature or the environment temperature is higher than a first temperature threshold value, or when judging that the exhaust temperature or the environment temperature is lower than a second temperature threshold value, wherein the first temperature threshold value is larger than the second temperature threshold value.
2. The apparatus of claim 1, wherein the controller controls the control valve to close and turn on the compressor if it is determined that the exhaust temperature or the ambient temperature is greater than a third temperature threshold after controlling the control valve to open when it is determined that the exhaust temperature or the ambient temperature is less than a second temperature threshold.
3. The apparatus of claim 1, wherein the heat exchange channel is formed in a shell of the compressor.
4. The device of claim 1, wherein the heat exchange channel is a water pipe coil wound around or embedded in a casing of the compressor.
5. The apparatus of claim 3 or 4, wherein the heat exchange channel comprises a plurality of heat exchange channels, and the plurality of heat exchange channels are arranged at different positions of the casing.
6. The apparatus of claim 1, wherein the control valve is a solenoid valve.
7. The apparatus of claim 1, wherein the heat exchange channel further comprises a second opening;
the device further comprises:
one end of the second branch pipe is used for being connected with the second opening, and the other end of the second branch pipe is used for being connected with the cooling pipeline;
the coolant liquid in the heat exchange channel flows through the second opening and the second branch pipe in sequence and then flows back to the cooling pipeline, or the coolant liquid flowing out of the engine flows into the second opening through the second branch pipe, flows through the heat exchange channel and then flows out of the first opening, and flows through the first branch pipe to circulate to the cooling pipeline.
8. A vehicle, characterized by comprising:
an engine;
an engine cooling system including a cooling duct for circulating a coolant to cool the engine;
a refrigeration unit, the refrigeration unit including a compressor; and
the heat exchange device of a compressor as claimed in any one of claims 1 to 7.
9. The vehicle of claim 8, wherein the compressor includes a housing made of cast aluminum.
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| CN201810961424.2A CN109269152B (en) | 2018-08-22 | 2018-08-22 | Compressor heat exchange device and vehicle |
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| CN110495831B (en) * | 2019-09-23 | 2023-02-24 | 珠海格力电器股份有限公司 | Dish washing machine control method and device, storage medium and dish washing machine |
| CN112428769B (en) * | 2020-09-30 | 2022-06-21 | 三花控股集团有限公司 | Thermal management system |
| CN113432195A (en) * | 2021-06-10 | 2021-09-24 | 青岛海信日立空调系统有限公司 | Air conditioning system |
| CN113212110B (en) * | 2021-06-23 | 2023-04-11 | 珠海格力电器股份有限公司 | Method, device and system for optimizing working environment of refrigerating unit of refrigerator car |
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