U.S. patent application number 15/873444 was filed with the patent office on 2018-07-26 for 3-2 way expansion valve.
The applicant listed for this patent is Hanon Systems. Invention is credited to Marc Graaf, Markus Herzog, Corinne Le Pellec, Toni Spies, Dominik Wiechard, Daniel Zens.
Application Number | 20180209548 15/873444 |
Document ID | / |
Family ID | 62812842 |
Filed Date | 2018-07-26 |
United States Patent
Application |
20180209548 |
Kind Code |
A1 |
Zens; Daniel ; et
al. |
July 26, 2018 |
3-2 WAY EXPANSION VALVE
Abstract
A valve (1) is introduced for a heat pump system in a motor
vehicle, with at least one inlet (3), at least two outlets (2, 4)
and a valve element (7) which comprises at least one throughlet (8)
and at least one expansion recess (9) that can be brought into
fluidic connection with at least one outlet (2, 4).
Inventors: |
Zens; Daniel; (Kreuzau,
DE) ; Spies; Toni; (Koln, DE) ; Graaf;
Marc; (Krefeld, DE) ; Wiechard; Dominik;
(Koln, DE) ; Herzog; Markus; (Bedburg, DE)
; Le Pellec; Corinne; (Pulheim, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Hanon Systems |
Daejeon |
|
KR |
|
|
Family ID: |
62812842 |
Appl. No.: |
15/873444 |
Filed: |
January 17, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F16K 5/10 20130101; F16K
5/12 20130101; B60H 1/00899 20130101; B60H 1/00885 20130101; F16K
5/0605 20130101; B60H 1/00485 20130101; F16K 11/0876 20130101 |
International
Class: |
F16K 5/06 20060101
F16K005/06; B60H 1/00 20060101 B60H001/00; F16K 5/12 20060101
F16K005/12 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 23, 2017 |
DE |
102017101208.7 |
Claims
1. A valve for a heat pump system in a motor vehicle, with at least
one inlet, at least two outlets and one valve element comprising at
least one throughlet and at least one expansion recess that can be
brought into fluidic connection with at least one outlet.
2. A valve according to claim 1, further comprising a shutoff
position.
3. A valve according to claim 1, wherein the completely open
throughlet comprises an angle of substantially 90.degree..
4. A valve according to claim 1, wherein at least one expansion
recess is a slot.
5. A valve according to claim 1, wherein t the valve element is
substantially sphere-shaped.
6. A valve according to claim 1, wherein two outlets are
substantially aligned with one another.
7. A valve according to claim 1, wherein one inlet essentially
aligns with a valve shaft connected with the valve element.
8. A valve as in claim 2, wherein the completely open throughlet
comprises an angle of substantially 90.degree..
9. A valve according to claim 2, wherein at least one expansion
recess is a slot.
10. A valve according to claim 3, wherein at least one expansion
recess is a slot.
11. A valve according to claim 2, wherein the valve element is
substantially sphere-shaped.
12. A valve according to claim 3, wherein the valve element is
substantially sphere-shaped.
13. A valve according to claim 4, wherein the valve element is
substantially sphere-shaped.
14. A valve according to claim 3, wherein the valve element is
substantially sphere-shaped.
15. A valve according to claim 9, wherein the valve element is
substantially sphere-shaped.
16. A valve according to claim 2, wherein two outlets are
substantially aligned with one another.
17. A valve according to claim 3, wherein two outlets are
substantially aligned with one another.
18. A valve according to claim 4, wherein two outlets are
substantially aligned with one another.
19. A valve according to claim 5, wherein two outlets are
substantially aligned with one another.
20. A valve according to claim 2, wherein one inlet essentially
aligns with a valve shaft connected with the valve element.
Description
FIELD OF TECHNOLOGY
[0001] The invention relates to a valve for a heat pump system in a
motor vehicle.
PRIOR ART
[0002] As is the case for many other interior spaces, the demand
for the interior space of a motor vehicle is that it be
air-conditioned to make it comfortable for its passengers. In this
regard DE 197 47 548 A1 discloses a heating device for use in a
motor vehicle and DE 192 53 357 A1 discloses a combined cooling
system/heat pump for operation in motor vehicles. A generally
utilizable flow control valve is disclosed in U.S. Pat. No.
5,524,863. While it is known for an air-conditioning system to
provide a thermostatic expansion valve for the expansion of the
refrigerant, there are additional requirements in heat pump
systems.
DESCRIPTION OF THE INVENTION
[0003] Against this background the objective of the invention is to
provide a cost-effective and/or space-saving valve for a heat pump
system.
[0004] This objective is attained through the valve described in
patent claim 1. Accordingly, this valve comprises at least one
inlet and at least two outlets as well as a valve element, in
particular a single valve element that comprises at least one
throughlet and at least one expansion recess which can be brought
into fluidic connection with an outlet. Thereby that at least two
outlets are provided, the refrigerant can be conducted in at least
two directions which in efficient manner fulfills the functionality
required for a heat pump. Moreover, according to the invention
advantageously on the valve element at least one expansion recess,
in particular an expansion slot is additionally provided, which can
be brought into fluidic connection with one outlet, in two
different positions advantageously with different outlets, such
that the refrigerant is expandable into two different directions
and, corresponding to the heat pump system, heating as well as also
air-conditioning is feasible. The heating capacity is therewith
improved. The valve according to the invention, which can be
denoted as 3/2-way expansion valve, is of low complexity, fully
fulfills the requirements and requires only small installation
space. The throughlet can be referred to as "fully open" since the
throughlet cross section corresponds approximately to that of the
at least one inlet or outlet or the throughlet cross section is in
any case markedly greater than that of the expansion recess.
[0005] Preferred further developments of the valve according to the
invention are described in the further claims.
[0006] The valve according to the invention can advantageously
comprise a closure position in which there is no fluidic connection
between the inlet and any outlet such that a separate cutoff valve
can be omitted saving cost and space.
[0007] An especially efficient utilization of the installation
space is anticipated for that embodiment in which the completely
opened throughlet describes an angle of substantially 90
degrees.
[0008] As already indicated, the expansion recess can
advantageously be an expansion slot. Stated differently it can be a
groove with preferably U-shaped cross section whose depth, starting
from its docking to the throughlet cross section, preferably
gradually decreases.
[0009] According to initial considerations advantageous properties
of the valve according to the invention are expected especially
when the valve element is a sphere. However, cylindrical
implementation as well as those in the shape of a truncated cone
are also feasible.
[0010] The form of the valve element is especially simply for that
preferred implementation in which two outlets are essentially
aligned with one another such that, by means of a rotation of the
valve element about substantially 180.degree. starting from a
fluidic connection with the one outlet, the inlet can be brought
into fluidic connection with the other outlet.
[0011] For a simple structure of the valve according to the
invention it has further been found to be advantageous if a valve
shaft connected with the valve element is essentially in alignment
with the inlet.
BRIEF DESCRIPTION OF THE FIGURES
[0012] In the following an embodiment example of the invention
depicted in the drawing will be explained in detail. Therein
depict:
[0013] FIG. 1 a schematic representation of the valve according to
the invention in a first position;
[0014] FIG. 2 a schematic representation of the valve according to
the invention in a second position;
[0015] FIG. 3 a schematic representation of an embodiment of the
valve element.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION
[0016] As is evident in FIG. 1, a valve element 7, in the depicted
embodiment having the shape of a sphere, is actuatable by means of
a valve shaft 6 through a rotary drive 1, which typically can be
implemented as electric actuator or electric control element. The
valve element 7 is received in a valve block 5 that comprises an
inlet 3 and two outlets 2, 4. It should be stated that the outlets
2, 4 can also be used as an inlet and the inlet 3 can also be used
as an outlet.
[0017] As is evident in FIG. 1, in the valve element 7 an angled,
substantially L-shaped throughlet 8 is provided, whose cross
section corresponds substantially to that of inlet 3 and/or outlet
2, 4. In the position shown in FIG. 1, consequently, a largely
unimpeded throughflow of the refrigerant is possible. This applies
equally to a position, not shown in the Figures, in which the valve
element is rotated by 180.degree. by means of the valve shaft 6
about a vertical axis, according to the Figures, such that the
throughlet 8 is substantially directed toward the outlet 4.
[0018] In contrast, in FIG. 2 a position is indicated in which the
valve element 7, compared to the position shown in FIG. 1, has been
rotated counterclockwise from a top view by 90.degree., in the
direction of the viewer. The indicated expansion recess 9 comes
into fluidic connection with the outlet 2, while the aperture,
pointing according to the position of FIG. 1 to the outlet 2, of
the valve element 7 is directed toward the viewer of FIG. 2, and is
here in contact on an inner wall of the valve block 5 such that it
is blocked. Accordingly, the refrigerant flowing in through the
inlet 3 can only flow out through the expansion recess 9 and herein
is expanded.
[0019] This applies equally, and advantageously suitably, to a heat
pump system, in the direction of the other outlet 4 in that
position which results from the position shown in FIG. 2 thereby
that the valve element 7 is rotated about its axis by 180.degree..
In this position the expansion recess 9 is in fluidic connection on
the side facing away from the viewer of FIG. 2 with the outlet 4
and enables the expansion of the refrigerant in this direction.
[0020] In FIG. 3 is depicted a practical embodiment of the, in this
case, spherical valve element 7. The openings to the throughlet 8
in the example shown are substantially circular and the openings,
essentially meeting in the center of the sphere, can be implemented
by drilling. The expansion recess 9 is connected to one of the
openings at its aperture which can be brought into fluidic
connection with one of outlets 2, 4 and, at the site of the docking
to the aperture, has a depth of a few millimeters. The cross
section of the groove forming the expansion recess 9 is
substantially rectangularly U-shaped, however it can also be
V-shaped, rounded or formed in any other way.
[0021] The expansion recess 9 extends substantially in the plane
which includes the axis of aperture 10 to which it is docked and
approximately over a quarter circle along the circumference of the
sphere. Its depth decreases continuously herein. Arrows A indicate
that the refrigerant initially flows in the interior of the sphere
according to FIG. 3 essentially in the vertical direction and
subsequently laterally through the expansion element 9 toward the
outside. In the depicted case the expansion recess 9 is
consequently developed along the "equator" of the sphere from which
also one of apertures 10 extends, while the aperture of the inlet 3
is implemented at a "pole". In particular when the expansion recess
9 extends less far along the circumference of the sphere, a
completely closed position is possible thereby that the sphere,
starting from the position shown in FIG. 2, is rotated toward the
right until there is no longer a fluidic connection from the
expansion recess 9 to the outlet 2 and aperture 10 has not yet come
into fluidic connection with the outlet 4.
* * * * *