Device for temperature control loop

Abstract

The invention relates to a device (1) for a temperature control circuit, comprising a base body (2) in which at least one channel (3) for conveying a temperature control medium is provided, and at least one check valve (4) which limits at least the conveying of the temperature control medium in a flow direction, the check valve (4) being formed as an insert and being at least partially accommodated in the base body (2).

Description

Technical Field

[0001] The invention relates to a device of a temperature control loop, comprising a substrate and at least one one-way valve. The substrate is provided with at least one channel for conveying a temperature control medium. The one-way valve at least limits the conveying of the temperature control medium in one flow direction. Background Art

[0002] In the prior art, the structure of the cooling device is known, in which a non-return valve is integrated into the temperature control medium circuit so that the temperature control medium can flow through different components of the temperature control medium circuit depending on the flow direction of the temperature control medium.

[0003] In principle, temperature-controlled media flows are used in many applications where the temperature of a device has to be controlled and, depending on the requirements, the device is heated or cooled. This applies in particular to electric vehicles in order to achieve the longest possible range. For this purpose, the temperature of the electrical components needs to be controlled. The components that require temperature control are in particular the energy storage units, but also the power electronics or connectors of fast charging devices. The energy storage units can only reach their optimum capacity within a very narrow temperature range. Therefore, the energy storage units of electric vehicles need to be heated at low ambient temperatures and cooled at high external temperatures or in the event of high load changes. Another important aspect is the air conditioning of the vehicle interior, which is carried out by temperature control in the form of an air conditioning system.

[0004] For this purpose, it is known to provide a temperature control medium circuit in which a temperature control medium circulates. Depending on the requirements, the temperature control medium can be heated in a heating device or cooled in a cooling device. In doing so, the flow of the temperature control medium can be controlled by a solenoid valve. However, it is also known to use a non-return valve to control the flow of the temperature control medium, wherein the non-return valve is integrated into the temperature control circuit in the form of a separate component.

[0005] Temperature control, in particular cooling, can be achieved by means of a cooling liquid circuit in which a temperature control medium in the form of a refrigerant, such as carbon dioxide or a halogenated hydrocarbon, circulates. In a refrigerant circuit with carbon dioxide (R744) as refrigerant, the system pressure in the circuit is up to 170 bar and the temperature of the refrigerant ranges between -30°C and 100°C. Summary of the invention

[0006] The object of the present invention is to provide a device for cooling a device which is cost-effective and compact.

[0007] This object is achieved by the features of claim 1. The dependent claims relate to advantageous embodiments.

[0008] The device for a temperature control circuit according to the invention comprises a base body, in which at least one channel for conveying a temperature control medium is provided, and at least one non-return valve which at least limits the conveyance of the temperature control medium in one flow direction of the channel, wherein the non-return valve is formed as an insert and is at least partially accommodated in the base body.

[0009] The at least one non-return valve is thus at least partially integrated into the base body, resulting in a particularly compact device. Furthermore, since the non-return valve is directly integrated into the base body, an additional conduit connection between the base body and the non-return valve, such as a hose, a pipe or the like, can be omitted, depending on the embodiment. Since the non-return valve is formed in the form of an insert, the non-return valve is accommodated in the base body in a removable manner. This makes it possible to replace individual components of the device.

[0010] The base body can form a distribution channel. The distribution channel of the annular circuit is used to distribute the temperature control medium. According to an advantageous embodiment, the temperature control circuit is formed as a refrigerant circuit. In this case, the temperature control medium is a refrigerant, wherein the device of the present invention is particularly suitable for using carbon dioxide (R744) as a refrigerant. The distribution channel has at least one channel. According to an advantageous embodiment, the distribution channel has a plurality of channels, so that the control of different components of the refrigerant circuit is particularly simple and cost-effective. In addition, the base body allows the formation of a particularly compact device. The base body is preferably made of a metal material, and in principle it is also conceivable to be made of plastic. These channels can lead to an inlet or an outlet, and the inlet and outlet can be equipped for accommodating pipes connected to other base bodies or other components of the temperature control circuit. If the base body is block-shaped, a particularly compact embodiment of the device can be achieved. The base body can have a plurality of channels and a plurality of non-return valves.

[0011] A non-return valve limits the flow of a temperature control medium in one direction or prevents the flow of a temperature control medium in one direction. If the device has multiple channels, multiple non-return valves can be introduced into the device so that, depending on the flow direction, the temperature control medium flows only through certain channels, while in other channels the flow of the temperature control medium is prevented by the non-return valves. Thus, different components connected to the device can be temperature controlled depending on the flow direction of the temperature control medium. Here, components are not only the equipment that needs to be temperature controlled, but also the equipment that brings the temperature control medium to the specified temperature, i.e. heats or cools it.

[0012] The one-way valve can have a sleeve, a piston and a fastening portion, wherein at least one opening is provided on the circumferential side of the sleeve. The sleeve is provided with an opening on the end face away from the fastening portion, wherein the piston is assigned to the opening. The side of the piston facing the opening can be formed into a punch or spherical shape, and the flow of the temperature control medium is blocked through the opening in one flow direction. Preferably, this embodiment allows the temperature control medium to flow into the sleeve through the opening on the end face side, while the temperature control medium flowing through the sleeve in the direction of the opening is blocked. In this case, the piston presses on the opening to prevent the temperature control medium from flowing out. For this purpose, a spring device can be assigned to the piston, wherein the spring device presses the piston against the circumference of the opening with an elastic preload.

[0013] A plurality of circumferential openings may be provided in the sleeve, and the temperature control medium may flow out of the sleeve through the circumferential openings.

[0014] The sleeve protects the piston of the non-return valve and allows the non-return valve to be mounted and integrated into the device particularly easily. In addition, the non-return valve consisting of sleeve and piston is particularly compact.

[0015] Preferably, the temperature control medium flows into the one-way valve through the end opening and flows out through the circumferential opening.

[0016] An annular channel can be provided in the base body, which is assigned to the circumferential opening. The annular channel extends around the opening and forms a collecting channel in which the temperature control medium can accumulate and be removed via a flow channel. Due to the annular channel, flow losses are reduced.

[0017] At least one anti-rotation device may be provided in the fastening portion and in the base body, respectively. Preferably, the anti-rotation device of the fastening portion and the anti-rotation device of the base body cooperate with each other to ensure that the non-return valve is correctly mounted in the device. This is particularly advantageous if it is desired to correctly position the end face and / or the circumferential opening relative to the flow channel.

[0018] The fastening portion may form a conical receiving portion for pipe connection. The conical receiving portion may form a joint to which the pipe may be connected. In such an embodiment, the pipe may be deformed locally, thereby forming a particularly tight connection between the non-return valve and the pipe.

[0019] The fastening part can be equipped with a positioning aid. The positioning aid is particularly advantageous if the non-return valve is accommodated or integrated in the device in such a way that the non-return valve cannot be rotated by simple means. The positioning aid thus allows the non-return valve to be correctly mounted in the device by simple means. For this purpose, for example, a hole or a projection or the like can be formed in the fastening part so that the non-return valve can be rotated using a suitable tool.

[0020] An expansion valve can be assigned to at least one channel. The expansion valve is part of the temperature control circuit and the device can be particularly compact due to the direct assignment of the expansion valve to a channel.

[0021] A transverse channel can be provided, which extends transversely to the sleeve. In particular, it is conceivable that the temperature control medium flows into the sleeve through the first circumferential opening and flows out of the sleeve through the second circumferential opening without the piston being actuated. The first opening can be opposite the second opening. The implementation of the transverse channel thus allows the implementation of a bypass channel through which the temperature control medium can flow without actuating the non-return valve. In addition to the transverse channel, the base body can also have a plurality of channels, each of which is assigned a non-return valve. Due to the non-return valve, the temperature control medium can only flow through these channels in one flow direction, while the temperature control medium can flow through the transverse channels in both flow directions.

[0022] The circumferential opening and / or the end opening can form an abutment, wherein the cross section of the abutment expands outward from the inside of the sleeve. Through the abutment, a pipeline element (such as pipeline) can be connected to the one-way valve in a sealed manner. For this reason, the pipeline element can be provided with a tubular portion and a thickening formed at one end of the pipeline element. The connecting element can be pushed onto the pipeline element, and the connecting element has a groove, and the pipeline element is accommodated in the groove, so that the connecting element is fixed on the pipeline element by the thickening in a form-fitting and anti-lost manner. The connecting element and the component can each have a thread, wherein these threads are meshed with each other and form a threaded connection, and the thickening forms a contact portion. The contact portion can be sealed against the abutment, so that the pipeline element is connected to the sleeve in a fluid-conducting manner. Connected by the form-fitting connection between the connecting element and the pipeline element, the threaded connection presses the contact portion on the abutment. The abutment can form a tapered cross section. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Some embodiments of the device of the present invention will be explained in more detail below with reference to the accompanying drawings. These drawings schematically show the following:

[0024] Figure 1 : A cross-sectional view of a device with an integrated non-return valve;

[0025] Figure 2 :according to Figure 1 A device having a plurality of receiving portions for the pipeline formed by one-way valves;

[0026] Figure 3 : A device having a non-return valve for a receiving portion of a pipeline;

[0027] Figure 4 :according to Figure 1 A device having a plurality of receiving portions for pipes;

[0028] Figure 5 : A cross-sectional view of a one-way valve is shown in detail. DETAILED DESCRIPTION

[0029] The figures show a device 1 for a temperature control circuit. The device 1 is part of a refrigerant circuit in an air conditioning system. The device 1 comprises a base body 2 in which a plurality of channels 3 for conveying a temperature control medium are arranged. The temperature control medium is a refrigerant, in particular carbon dioxide. In this case, the base body 2 forms a distribution channel and conveys the refrigerant to the components of the refrigerant circuit.

[0030] In addition, non-return valves 4 are provided, which block the transport of the temperature control medium in these channels in one flow direction. The non-return valves 4 are formed in the form of inserts and are accommodated in the base body 2. The non-return valves 4 are integrated into the device 1 so that the adjustment of the temperature control medium flow can be changed, wherein different components of the temperature control circuit can flow through according to the flow direction, while in other fluid channels, the temperature control medium flow is blocked by the non-return valves 4. For example, the circulation of the refrigerant can be changed according to the ambient temperature and power requirements. The change of the temperature control medium flow is achieved by the non-return valves 4 arranged in the base body 2. The components of the refrigerant circuit are directly connected to the base body 2. Depending on the installation space and the arrangement of the components, these components can also be connected to the base body 2 by hoses or pipes. The components of the refrigerant circuit are in particular heat exchangers, evaporators, coolers, condensers, gas coolers, battery cooling plates, compressors and accumulators. These components can be selectively controlled using the device 1. In the present embodiment, the base body 2 is made of aluminum.

[0031] exist Figure 1 In the embodiment shown, the non-return valve 4 is completely integrated into the base body 2 and is flush with the surface of the base body 2. For this purpose, a groove is provided in the base body 2, in which the non-return valve 4 is arranged. The non-return valve 4 has a sleeve 5, a piston 6 arranged in the sleeve 5, and a fastening part 7, wherein the circumferential side of the sleeve 5 is provided with a plurality of openings 8, which are evenly distributed on the circumference of the sleeve 5. In this embodiment, the sleeve 5 and the fastening part 7 form two independent parts. The sleeve 5 containing the piston 6 forms an insert, which is inserted into the groove. The fastening part 7 is formed as a nut and fixes the sleeve 5 in the groove. Another opening 8' is provided on the end face of the sleeve 5 away from the fastening part 7, wherein the piston 6 is assigned to the other opening 8'. A spring device presses the piston 6 against the inner side of the other opening 8'. Through the other opening 8', the non-return valve 4 is connected to the channel 3 inside the base body 2 in a fluid-conducting manner. In this embodiment, the sleeve 5 and the fastening part 7 are made of steel.

[0032] The temperature control medium flows into the sleeve 5 through the inner channel 3 from the end opening 8' and flows out from the circumferential opening 8. In the opposite flow direction, the piston 6 resting on the other opening 8' blocks the flow of the temperature control medium so that it cannot flow out through the other opening 8'.

[0033] An annular channel 9 is provided in the base body 2 , which is associated with the circumferential opening 8 and forms a collecting channel extending around the sleeve 5 .

[0034] The fastening portion 7 is provided with a positioning aid 12. An anti-rotation device 12 is introduced into the fastening portion 7 and the base body 2 respectively to ensure that the sleeve 5 of the one-way valve 4 is correctly positioned in the base body 2. The anti-rotation device 12 comprises a radial protrusion arranged on the outside of the sleeve 5, which cooperates with a groove of the same shape arranged in the groove of the base body 2.

[0035] Figure 2 Shows Figure 1 A further improvement of the device 1 shown. In this device 1, the opening 8 and the further opening 8' expand outwards from the interior of the sleeve 5 and are conical. Thus, the opening 8 and the further opening 8' form a receiving portion 10, against which the thickened end of the pipe 13 can be sealingly rested. The receiving portion 10 is part of the pipe connection 11.

[0036] exist Figure 3 In the embodiment shown, the non-return valve 4 is screwed into the base body 2, wherein a receiving portion formed by the non-return valve 4 for connecting the non-return valve 4 to the pipeline protrudes from the base body 2. The base body 2 has a groove in which the non-return valve 4 is partially accommodated. The non-return valve 4 has a sleeve 5, a piston 6 arranged in the sleeve 5, and a fastening portion 7, wherein a plurality of openings 8 are provided on the circumferential side of the sleeve 5, and these openings 8 are evenly distributed on the circumference of the sleeve 5. The fastening portion 7 and the groove of the base body 2 are both provided with threads.

[0037] The sleeve 5 is provided with a further opening 8' on the side facing the fastening part 7, wherein the piston 6 is assigned to the further opening 8'. The further opening 8' expands outwards from the interior of the sleeve 5 and is conical. Thus, the opening 8' forms a receiving part 10, against which the thickened end of the pipe 13 rests sealingly. The receiving part is part of the pipe connection 11.

[0038] The piston 6 is pressed against the inside of the further opening 8' by a spring device. Via the further opening 8', the non-return valve 4 is connected to the channel 3 inside the base body 2 in a fluid-conducting manner.

[0039] The temperature control medium flows into the sleeve 5 from the end opening 8' through the inner channel 3 and flows out from the circumferential opening 8. In the opposite flow direction, the piston 6 resting on the other opening 8' blocks the flow of the temperature control medium so that it cannot flow out through the other opening 8'.

[0040] An annular channel 9 is provided in the base body 2 , which is associated with the circumferential opening 8 and forms a collecting channel extending around the sleeve 5 .

[0041] Figure 4 Shows Figure 2 A further development of the device 1 shown. In this device 1, a further opening 8' expands outwards from the interior of the sleeve 5 and is conical. The channel 3 assigned to the opening 8 forms a further cross-sectional expansion. The cross-sectional expansion of the channel 3 is thus formed from the base body. The opening 8 and the cross-sectional expansion formed by the channel 3 form a receiving part 10, against which the thickened end of the pipe 13 rests sealingly. The receiving part 10 is in each case part of a pipe connection 11.

[0042] Figures 1 to 4 The substrate 2 shown in the figure can be formed to accommodate a plurality of one-way valves 4. The substrate 2 can form a pipeline structure for a temperature control device. The substrate 2 can be provided with a transverse channel, which extends transversely to the one-way valves 4 and connects the circumferential openings 8 of the one-way valves 4 together in a fluid-conducting manner. The transverse channel can form a bypass channel. In this case, the one-way valve 4 can be connected to the substrate 2 in a fluid-conducting manner. Figure 4 As can be seen in FIG. 5 , the channel 3 extends on both sides of the sleeve 5 , so that the temperature control medium can flow through the sleeve 5 in both flow directions without being hindered by the piston 6 and the non-return valve 4 .

[0043] An expansion valve can be assigned to one or more channels 3. In this case, it is particularly conceivable that the expansion valve is formed by the sleeve 5, in particular by an opening 8 of the non-return valve 4. The expansion valve is formed as a component of the non-return valve 4.

[0044] Figure 5 The non-return valve 4 in the device 1 according to one of the previous figures is shown in detail. The non-return valve 4 has a sleeve 5, a piston 6 arranged in the sleeve 5, and a fastening part 7, wherein a plurality of openings 8 are provided on the circumferential side of the sleeve 5, and these openings 8 are evenly distributed on the circumference of the sleeve 5. The end face of the sleeve 5 facing away from the fastening part 7 is provided with a further opening 8', wherein the piston 6 is assigned to the further opening 8'. The piston 6 is pressed against the inner side of the further opening 8' by a spring device.

Claims

1. A device (1) for a temperature control circuit, comprising a base body (2), in which is provided at least one channel (3) for conveying a temperature control medium, and at least one non-return valve (4), which limits the conveyance of the temperature control medium in at least one flow direction of the channel, wherein the non-return valve (4) is formed as an insert and is at least partially accommodated in the base body (2).

2. The device according to claim 1, characterized in that The base body (2) forms a distribution channel.

3. The device according to claim 1 or 2, characterized in that: The one-way valve (4) comprises a sleeve (5), a piston (6) and a fastening portion (7), wherein at least one opening (8) is provided on the circumferential side of the sleeve (5), and another opening (8') is provided on the end face of the sleeve (5) away from the fastening portion (7), and the piston (6) is assigned to the other opening (8').

4. The device according to claim 3, characterized in that The sleeve (5) is provided with a plurality of circumferential openings (8).

5. The device according to claim 3 or 4, characterized in that The temperature control medium flows in through the further opening (8') and flows out through the circumferential opening (8).

6. The device according to any one of claims 3 to 5, characterized in that An annular channel (9) is provided in the base body (2), which is associated with the circumferential opening (8).

7. The device according to any one of claims 3 to 6, characterized in that At least one anti-rotation device is respectively provided in the fastening portion (7) and the base body (2).

8. The device according to any one of claims 3 to 7, characterized in that A conical receiving portion (10) for a pipe connection (11) is formed from the fastening portion (7).

9. The device according to any one of claims 3 to 8, characterized in that The fastening portion (7) is equipped with a positioning auxiliary device (12).

10. The device according to any one of claims 1 to 9, characterized in that An expansion valve (13) is assigned to at least one channel (3).

11. The device according to any one of claims 3 to 10, characterized in that A transverse channel is provided, which extends transversely to the sleeve (5).

12. The device according to any one of claims 1 to 11, characterized in that The base body is made of metal material.

13. The device according to any one of claims 3 to 12, characterized in that The sleeve (5) and the fastening portion (7) are made of metal material.

14. A temperature control circuit comprising a device (1) according to any one of the preceding claims.

15. The temperature control circuit according to claim 14, characterized in that: The temperature control loop is and the temperature control medium is a carbon dioxide based refrigerant.

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