CN102656411B - Air-conditioning device comprising a controlled-level tank - Google Patents

Abstract

The invention relates to an air-conditioning device, particularly for a motor vehicle, comprising a tank (1) for collecting a liquid, said tank being formed by two compartments that are intercommunicated by means of a first passage (18) located in the lower portion of the tank. The first compartment, known as the main compartment (15), includes a liquid inlet (11) and a lower liquid outlet (12), while the second compartment, known as the auxiliary compartment (16), includes delivery means for delivering at least part of the liquid from the auxiliary compartment into the main compartment (15) through the above-mentioned first passage (18).

Description

A kind of aircondition comprising the liquid container of band liquid level adjustment System

Technical field

The present invention relates to a kind of aircondition of improvement.

Equally also relate to a kind of motor vehicles being equipped with the aircondition of this improvement.

Background technology

In existing aircondition, the operation principle of known absorbing formula aircondition is the refrigerant fluid relying on absorbent fluid to absorb gaseous state.Different from traditional mechanical compress aircondition, this absorption type air-conditioner device is not owing to having mechanical compress, and therefore rare moving component, which limit noise and vibrations, simplify maintenance, improves service life and the reliability of device.

People have been devoted to the performance improving absorption type air-conditioner device, install on the rolling stock in easy, reliable mode to make them.So FR2900723 document exemplifies explanation to this aircondition, it comprises the evaporimeter/absorber assemblies be made up of the porous plate being wherein distributed with fluid, and refrigerant fluid (such as water) to be evaporated flows through some plate; Absorbent fluid (such as lithium-bromide solution) flows through other plate.

This kind of aircondition also should improve, and makes it can effectively operate in the motor vehicle.

Absorption type air-conditioner device comprises two fluid circuits, and one is absorbent stream body loop, and another is flow of refrigerant body loop, and every bar loop all needs to have fluid collecting container separately.These containers take up an area very large, and the liquid of vessel filling is very heavy.Like this, the volume and weight of these existing apparatus is relatively very large, must reduce its volume and weight, to make this system can small space effectively in adaline motor vehicle.

Reduce volume of a container and run into multiple technologies obstacle.In fact, every bar loop of absorption type air-conditioner device must be filled with sufficient liquid for a long time.

Especially, the pump that liquid is flowed in the loop forever should obtain the supply of liquid, to guarantee that their work is good and reliable.

Because absorption type air-conditioner device needs, generally from the heat supply of vehicle motor, to carry out desorb, effectively to carry out desorb work before the non-heat of engine.Therefore, in the first few minutes of vehicle operation, it is utilize to retain that absorption type air-conditioner device is started working, those absorbent fluid be not instantly updated and refrigerant fluid.So, the absorbent fluid of retention and refrigerant fluid should quantity sufficient, to guarantee that aircondition can normally work when desorption device not yet works.Motor vehicles motor vehicles

Summary of the invention

Therefore, the object of the present invention is to provide a kind of aircondition being applicable to motor vehicles, compared with the absorption type air-conditioner device known with prior art or cooling device, its service behaviour is improved.

Motor vehicles especially the object of the present invention is to provide a kind of absorption type air-conditioner device, and compared with the device of prior art, it can provide identical performance with the volume reduced.

Another object of the present invention is this kind of absorption type air-conditioner device provided, its simplicity of design, and in enforcement, required technical equipment is not expensive.

Aim of the present invention is also to provide a kind of absorption type air-conditioner device, and its dependence has simple and effective transmission mechanism guidance system provides good reliability.

These objects and below clear other object described are all by a kind of aircondition being mainly applicable to motor vehicles achieves.Aircondition comprises liquid collecting container, it is characterized in that: described collection container has two rooms, and described two rooms are communicated with by the first passage being in lower vessel portion each other.First Room of described two rooms is called main chamber, comprise liquid inlet and be in the liquid outlet of liquid inlet more lower position, and the second Room of described two rooms is called concubine, comprises pressure conveyer device, its by first passage by feeding liquid under pressure at least part of in concubine to main chamber.

This configuration can adjust the liquid level in main chamber, and this liquid level can be maintained in the enough levels of on receptacle outlet one, even if the amount of liquid in this container is little.

According to a kind of implementation method of the best, pressure conveyer device can increase the pressure in concubine.

It is helpful that pressure conveyer device is made up of the liquid heat pack be contained in concubine, is suitable for causing partially liq vaporization, so the steam occurred in concubine is applied with the pressurization pressure towards direction, main chamber to liquid.

This pressure conveyer device dependable performance, easy to use.

Same two rooms are communicated with by the second channel being in described upper vessel portion each other, and draft can be made to pass through, and this mode is benefited.

Like this, liquid level adjustment can not disturb by the incondensable gas that may exist in container.

According to a kind of helpful implementation method, main chamber is infundibulate, shrinks round flow export.

This shape contributes to accelerating the output flow of liquid to container.

Best container is equipped with inner vanes, does flow-disturbing motion to stop container institute holding liquid.

Blade can matrix or inclination, to avoid occurring cavitation at centrifugal pump input, and utilizes the gravity of liquid and arrives at speed, started the necessary rotary motion of such pump work.

These blades, except the motion of prevention flow-disturbing, can also strengthen the rigid of container.

Best mode is this aircondition is absorption type air-conditioner device.

According to a kind of helpful implementation method, described concubine is in the top of described concubine by one, and the passage that draft can be made to pass through communicates with the evaporimeter/absorber assemblies of described absorption type air-conditioner device.

The invention still further relates to a kind of motor vehicles, there is the modified aircondition meeting aircondition noted earlier.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, by means of only the preferred forms exemplified, in the present patent application category, in non-limiting manner the present invention is described more clearly, understand its other object, characteristic and advantage etc., wherein:

-Fig. 1 simply represents the operation principle of absorption type air-conditioner device;

-Fig. 2 simply represents the performance loop of absorption type air-conditioner device;

-Fig. 3 represents the perspective view of the evaporimeter/absorber assemblies of the absorption type air-conditioner device according to an embodiment of the present invention;

-Fig. 4 represents the sectional view of liquid collecting container according to the aircondition of an embodiment of the present invention or container;

-Fig. 5 and Fig. 6 represents the liquid collecting container of aircondition according to the another kind of embodiment of the present invention or the sectional view of container.

Detailed description of the invention

The present invention preferably but and a kind of absorption type air-conditioner device of not exclusive use uses two-fluid loop, refrigerant conveying fluid, such as a water; Another carries absorbent fluid, as lithium bromide (LiBr) salting liquid.

Fig. 1 simply represents element and the operation principle of absorption type air-conditioner device.It comprises: the element wherein carrying out desorb, is referred to as " desorption device " 100, condenser 200 hereinafter, evaporimeter 300 and absorber 400.

Be filled with the mixture of at least two kinds of miscible materials in desorption device 100 and absorber 400, described mixture is formed by refrigerant fluid and absorbent fluid.This mixture mixes in absorber 400, and absorbent fluid absorbs the refrigerant fluid of vapor phase in described absorber.

The evaporating pressure of refrigerant fluid and absorbent fluid is completely different, and when being heated in desorption device 100 with convenient mixture, the flow of refrigerant evacuator body that volatility is stronger, enables two kinds of fluids be separated.Be separated necessary heat (arrow A is simply shown) and advantageously can supply desorption device by the cooling fluid of vehicle motor.

The refrigerant fluid of steam-like is directed to condenser 200 by pipeline 120, and passes through the cooling effect condensation (arrow B simply represents the cooling provided) of extraneous air.

Subsequently, the refrigerant fluid of liquid phase is directed to evaporimeter 300 by pipeline 210.The cold produced during flow of refrigerant evacuator body is sent to the indoor (not shown) of vehicle drive, as arrow C simply shown in.For this purpose, warm-air drier 320 is set, is connected with evaporimeter 300 with pump 310 with 313 by pipeline 311.

The refrigerant fluid steam leaving evaporimeter 300 is introduced into absorber 400 by pipeline 21, and in fact this pipeline is formed by the shell of absorber/evaporator assemblies.In the loop of absorbent solution by the cooled absorbent fluid of extraneous air (arrow D simply represents provides cooling) absorption refrigeration agent fluid steam, again to form mixture.

The loop of absorbent solution is formed by radiator 420, and described radiator is connected with absorber 400 with pump 410 with 419 by pipeline 416,417.Absorber 400 is connected with desorption device 100 with 416 by pipeline 414,415.

Fig. 2 represents a kind of performance loop figure applying absorption type air-conditioner of the present invention.As non-limiting example, it relates to the absorption mechanical device (lithium bromide is absorbent fluid, and water is refrigerant fluid) utilizing lithium bromide-water combination.

Usually all loop element same or similar with the element of Fig. 1 is represented with identical Reference numeral.Mark 100 and 200 respectively mark is used for desorption device and the condenser of refrigerant fluid.Mark 320 and 420 respectively mark is used for the warm-air drier of refrigerant fluid and the radiator for absorbent fluid.

Mark 310 and 410 indicates the pump of flow of refrigerant body loop and the pump of absorbent stream body loop respectively.Mark 350 and 450 indicates the refrigerant fluid of retention and the absorbent fluid of retention respectively.Mark 62 and 63 mark check-valves, the steam in desorption device 100 is guided to the pipeline of condenser 200 by mark 120 mark.

Mark 500 indicates the assembly absorber of absorption type air-conditioner device and evaporator bank are combined.Flow of refrigerant body fluid stream and absorbent stream body fluid flow through this evaporimeter/absorber assemblies, part of refrigerant fluid is evaporated in this evaporimeter/absorber assemblies, the evaporation of this heat absorption serves the effect of cooling residual refrigerant fluid stream, and the steam of generation is directly absorbed by absorbent stream body fluid stream.

Fig. 3 is the perspective view of some element of this evaporimeter/absorber assemblies, and two different loops are shown, a loop stream, through refrigerant fluid, plays evaporimeter effect; Another loop stream, through absorbent fluid, plays the effect of absorber.

The loop that liquid refrigerant flows flows through comprises refrigerant fluid supply pipe 301, to refrigerant fluid distributor disk 302 accommodating fluid, refrigerant fluid can be dispensed in multiple evaporation frameworks 330 that are parallel to each other and that vertically extend by described distributor disk.In each evaporation framework 330, refrigerant fluid (as necessary by gravity) is circulation in distribution grid (Fig. 3 is not shown), and a part of fluid evaporator.

By the refrigerant fluid not having to evaporate that evaporation is cooled, leave evaporation framework 330 by the fluid issuing 332 evaporating framework 330, and arrive refrigerant fluid collection container 350.

The loop that absorbent fluid flows through and the loop that refrigerant fluid flows through closely similar.Thus it comprise absorbent fluid supply pipe 401, so that to absorbent fluid distributor disk 402 accommodating fluid, absorbent fluid is dispensed in multiple absorbing frames 430 that are parallel to each other and that vertically extend by described distributor disk, and described absorbing frame is parallel with evaporating framework 330 and be alternately distributed.

Absorbent fluid (as necessary by gravity) is circulation in the distribution grid (Fig. 3 is not shown) of absorbing frame 430, and absorption refrigeration agent fluid steam.Absorbent fluid leaves absorbing frame 430 by fluid issuing 432, and arrives absorbent fluid container 450.

Obviously, the evaporimeter/absorber assemblies shown in Fig. 3 is incorporated in (not shown) in closed box, to avoid, with outside, gas exchanges occurs.

Refrigerant fluid container 350 and absorbent fluid container 450 for lay in be not positioned in vessels downstream transport pump to loop before fluid liquid.Every bar during to make system works in two loops is all filled with sufficient fluid.

In fact, when absorbent fluid absorption refrigeration agent fluid steam, its volume increases, and the volume of refrigerant fluid almost reduces identical quantity.The missionary society of volume is relatively large, such as, in the starting air-conditioning stage.

Like this, if the few refrigerant fluid of absorbent fluid load, its volume reduces, and its salinity increases.Absorption can be more effective.According to its salinity, this absorbent fluid on to freeze or crystallization has impact more or less, excessive concentration or deficiency solution influenced larger.Illustrate, mass concentration be 10% lithium bromide salting liquid temperature for-5 DEG C time freeze, concentration be 50% salting liquid of the same race temperature for-42 DEG C time freeze, concentration be 54% salting liquid temperature for-16 DEG C time freeze, and concentration be 62% salting liquid freeze+28 DEG C time.

The fluid of q.s to be had in loop, maintain no matter aircondition to enable the salinity in salting liquid and be in the limits which kind of working stage (starting, peak power work etc.) can both normally work.

In addition, when aircondition quits work, container can lay in fluid at least partially.In fact, if vehicle stops at low temperatures, then exist fluid freeze, damage or blocking loop danger.Because container completely cuts off cold relatively easily, the liquid that they can protect it to hold within a certain period of time exempts from and freezes.

Certainly it should be noted that the volume of the fluid of volume of a container and deposit relative to the whole fluid volumes had in loop must keep relatively little, to avoid aircondition volume excessive overweight.

Fig. 4 represents the profile of the liquid collecting container according to a kind of possibility of the present invention embodiment.

This container 1 top comprises entrance 11, and liquid enters container by this entrance, and described lower vessel portion comprises outlet 12, and liquid is by this outlet flow container.Pump 2 is assemblied in export pipeline on the position of outlet 12, so that by the Liquid transfer that is contained in container 1 in loop.

In this example, this pump 2 is centrifugal pump, the wheel 22 (using dotted line mark) comprising motor 21 and rotate around axle 23, and described pump passes through outlet 12 pumping liquid of container 1, and by feeding liquid under pressure in pipeline 24.The rotating shaft 23 of this pump vertically, to improve its validity under weak pressure and/or the not high situation of liquid level.This pump can also fill a fluid accelerator, as a screw improves efficiency.

The entrance 11 of container 1 is equipped with a float trap 4, is used for avoiding the spilling of liquid, especially when air-conditioning is shut down.

According to the present invention, especially as shown in Figure 4, container 1 is divided into two rooms, and a main chamber 15, it has entrance and exit, and a concubine 16 around main chamber 15.

According to funnel mode, than narrow helpful above below the cross section of main chamber 15.The fluid flow being entered container 1 by entrance 11 preferentially can be turned to the direction of the rotating shaft 23 of outlet 12 and pump 2 by this profile.

Because the fluid flow in container is large, under gravity, the shape of main chamber 15 can increase the vertical mobility of liquid in container, and its result enhances the performance of pump 2.In addition, the speed increasing liquid arrival pump just increases Hydrodynamic, thus reduces the risk occurring cavitation on pump.

It is noted that using air-condition device liquid container has two rooms, one of them is infundibulate, is used for accelerating flow direction flow export very helpful, independent of container other characteristics as shown in Figure 4, can be used alone in air-conditioning.

Concubine 16 is realized by the passage 18 being arranged on wallboard 17 bottom of separating these two rooms with the connection of main chamber 15.In addition, the top of this wallboard also has a limiting channel 19, and one minimum air-flow can be made to pass through between concubine 16 and main chamber 15.This limiting channel 19 can edit hole by one and form, and the air-flow of generation is about 10L/h.The embodiment possible according to another kind, this limiting channel 19 is made up of a kind of mushy material of gas-permeable, liquid-impermeable body, and such as, a kind of polypropylene or polyethylene glued membrane are made.

According to a kind of not shown embodiment that is that supplement or that replace, concubine is equally likely communicated with the evaporimeter/absorber assemblies of absorption type air-conditioner device by a limiting channel, and it is in concubine top, and permission draft passes through.

Under normal circumstances, according to jar circulation principle, the liquid level of two rooms in container 11 is equal.But the liquid level guaranteeing on pump keeps sufficient for a long time, make pump and fluid circuit works fine extremely important, time especially to pump supply liquid, gas must not be made to enter pipeline.

When liquid level in container 1 is not enough, an applicable sensor can detect this phenomenon.Therefore, the partially liq stored in concubine 16 be flowed to main chamber 15.For this reason, in concubine 16, a preset thermal source 161, such as, can adopt a resistance.

When to need the feeding liquid under pressure that stores in concubine 16 to main chamber 15, thermal source 161 heats the liquid had in concubine 16, in concubine 16, form steam fast.Because the quantity of steam produced is excessive, cannot enter main chamber by restriction conduit 19, the air pressure in concubine 16 increases, and this results in by passage 18 to main chamber 15 fluid under pressure, thus improves the liquid level in this room 15.

When the liquid level in container 1 recovers sufficient again, thermal source 161 quits work, cause the cooling of concubine 16 liquid storage bodies like this, in this room 16, steam of depositing starts condensation, pressure is reduced, pressure is reduced by the gas flowed through from restricted entry 19 gradually equally, and therefore main chamber 15 is consistent with the fast quick-recovery of the liquid level in concubine 16.

It is noted that restricted entry 19 can avoid this adjustment System to be subject to the interference of the noncondensable gas (as air) that may appear in concubine 16.

This vessel level adjustment System has some to use simple especially parts, and utilizes minimum energy efficient to ensure that minimum level on the outlet being in container.

Fig. 5 and Fig. 6 represents this application of liquid level adjustment System in container 5, and the Container Type that this container and Fig. 4 represent is completely different.This container has a main chamber 55, above has liquid inlet 51 and liquid outlet 52.It also has a concubine 56, is communicated with the limiting channel 59 being in this wallboard 57 top by the passage 58 being in wallboard 57 bottom of separation two Room with main chamber 55.

Concubine 56 has a thermal source 561, is exactly a resistance.When thermal source does not activate, as shown in Figure 5, the liquid level of two indoor is equal.When thermal source is activated, as shown in Figure 6, the liquid stored in heating concubine, has evaporated partially liq.The gas generated causes superpressure at concubine 56, and its effect is that liquid pressing is delivered to main chamber 55, and thus, the liquid level in main chamber 55 increases.

Fig. 5 and Fig. 6 represents that container 5 has a float trap 4.But liquid level adjustment System can use in the air-conditioning system container not relying on this valve.

According to a special characteristics of the present invention, blade vertically can extend in container 1, returns container to avoid liquid in rotation or flow-disturbing motion.These blades both can be used in container main chamber, also can be used in concubine, contributed to the solidification of container.

While avoiding liquid perturbation, blade also avoids liquid upper surface to form a taper, and its top likely makes air enter pump 2, and disturbs the work of pump.

It is noted that in the air-conditioning system container that these blades can independently be used in outside other characteristics of the present invention.

The present invention has multiple advantage, comprising following advantage:

The equipment that-the present invention utilizes technique simple, cheap, improves the function of the absorption type air-conditioner device being applicable to motor vehicles,

-reduce the volume of aircondition.

Certainly, the invention is not restricted to the above-mentioned embodiment enumerating explanation, those skilled in the art can design other embodiment not exceeding framework of the present invention and sphere of action.

Claims (9)

1. an aircondition, comprise liquid collecting container (350, 450, 1, 5), it is characterized in that: described collection container has two rooms, described two rooms are by the first passage (18 being in lower vessel portion, 58) be interconnected, first Room of described two rooms is called main chamber (15, 55), comprise liquid inlet (11, 51) and be in the liquid outlet (12 of liquid inlet more lower position, 52), and second Room be called concubine (16, 56), comprise pressure conveyer device, it passes through first passage (18 to the partially liq in major general's concubine, 58) force feed is to main chamber (15, 55), described two rooms are same by being in described container (1 each other, 5) second channel (19 on top, 59) be communicated with, draft is passed through.

2. aircondition according to claim 1, is characterized in that: described pressure conveyer device can increase the pressure in concubine (16,56).

3. aircondition according to claim 2, it is characterized in that: described pressure conveyer device is by being contained in concubine (16,56) liquid heat pack (161,561) form, be suitable for partially liq is vaporized, so the steam occurred in concubine (16,56) is applied with the pressurization pressure towards main chamber (15,55) direction to liquid.

4. according to the aircondition in claims 1 to 3 item described in any one claim, it is characterized in that: described main chamber (15), in infundibulate, shrink round liquid outlet (12).

5. according to the aircondition in claims 1 to 3 item described in any one claim, it is characterized in that: described container is equipped with inner vanes, the liquid stored can be stoped to do flow-disturbing motion.

6. according to the aircondition in claims 1 to 3 item described in any one claim, it is characterized in that: aircondition is absorption type air-conditioner device.

7. aircondition according to claim 6, is characterized in that: described concubine is in the top of described concubine by one, and the passage that draft can be made to pass through communicates with the evaporimeter/absorber assemblies of described absorption type air-conditioner device.

8., according to claim 1-3, aircondition in 7 described in any one claim, it is characterized in that, described aircondition is used for motor vehicles.

9. motor vehicles, is characterized in that: it comprises the aircondition according to any one claim in claim 1 to 8.