Refrigerating system, control method and refrigerating equipment

Abstract

The refrigerating system at least comprises a compressor, a refrigerant flow direction control device, a refrigeration evaporator and a freezing evaporator, the refrigeration evaporator and the freezing evaporator are arranged in parallel, and the evaporators are connected with the compressor and the refrigerant flow direction control device in series at the same time. The refrigerant flow direction control device is used for controlling the refrigerant generated by the compressor to flow to the refrigeration evaporator and / or the freezing evaporator; the refrigerant flow direction control device comprises a control valve device and a dew removing device; when the freezing evaporator refrigerates, the control valve device is used for controlling a refrigerant to flow to the freezing evaporator after passing through the dew removing device; and when the refrigeration evaporator refrigerates, the control valve device is used for controlling the refrigerant to directly flow to the refrigeration evaporator without passing through the dew removing device. According to the invention, the problems of energy consumption increase and the like caused by the fact that a hot refrigerant passes through the dew removing device during refrigeration of the refrigeration evaporator can be avoided, so that the energy-saving effect is achieved.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration devices, and particularly to a refrigeration system, a control method, and a refrigeration equipment. Background Art

[0002] For a multi-system air-cooled refrigerator, the refrigerant flow direction is usually single, that is, from the compressor, through the dew removal pipe, the condensing pipe, the electric valve, the drying filter, the capillary tube, the evaporator, and then back to the compressor. The refrigerant must flow through all the above components to achieve the complete functions of dew removal, cooling, and refrigeration.

[0003] In the existing air-cooled refrigerators, due to the design of the three-port electric valve with generally one inlet and two outlets, there is only one inlet, resulting in that when the refrigerant flows through the electric valve, it can only passively receive the refrigerant from the condenser and switch the refrigeration flow direction between the refrigerating chamber and the freezing chamber, without other functions. When the hot refrigerant flows through the dew removal pipe of the freezing chamber, in addition to preventing condensation, it also increases the energy consumption to a certain extent.

[0004] Especially when the refrigerating chamber refrigerates alone, the hot refrigerant still has to flow through the freezing door seal position, further increasing the energy consumption loss. Summary of the Invention

[0005] The purpose of the present invention is to provide a refrigeration system, a control method, and a refrigeration equipment.

[0006] To achieve one of the above-mentioned invention purposes, an embodiment of the present invention provides a refrigeration system, which at least includes a compressor, a refrigerant flow direction control device, a refrigerating evaporator, and a freezing evaporator. The refrigerating evaporator and the freezing evaporator are arranged in parallel, and both are connected in series with the compressor and the refrigerant flow direction control device at the same time. The refrigerant flow direction control device is used to control the refrigerant generated by the compressor to flow to the refrigerating evaporator and / or the freezing evaporator;

[0007] The refrigerant flow direction control device includes a control valve device and a dew removal device;

[0008] When the freezing evaporator refrigerates, the control valve device is used to control the refrigerant to flow to the freezing evaporator after passing through the dew removal device; when the refrigerating evaporator refrigerates, the control valve device is used to control the refrigerant to directly flow to the refrigerating evaporator without passing through the dew removal device.

[0009] As a further improvement of an embodiment of the present invention, the control valve device includes a control valve body. At least one inlet pipe and two outlet pipes are respectively arranged on two side surfaces of the control valve body for controlling the refrigerant flow direction. A shielding component is also arranged inside the control valve body, and a through hole is arranged on the shielding component. By controlling the rotation of the shielding component, the through hole can make two of the outlet pipes communicate with each other.

[0010] As a further improvement of an embodiment of the present invention, the shielding member has a disc-shaped structure, and the orthographic projection of the outlet channel in the plane direction of the shielding member entirely falls on the shielding member.

[0011] As a further improvement of an embodiment of the present invention, the inlet channel includes a first inlet pipe and a second inlet pipe, the outlet channel includes a first outlet pipe, a second outlet pipe, a third outlet pipe and a fourth outlet pipe. The first inlet pipe, the first outlet pipe and the second outlet pipe are arranged on one side of the control valve body in the direction of controlling the refrigerant flow, and the second inlet pipe, the third outlet pipe and the fourth outlet pipe are arranged on the other side of the control valve body in the direction of controlling the refrigerant flow;

[0012] The connection ports of the first outlet pipe and the second outlet pipe are respectively equidistant from the center point of the shielding member in the orthographic projection of the shielding member, and the connection ports of the third outlet pipe and the fourth outlet pipe are respectively equidistant from the center point of the shielding member in the orthographic projection of the shielding member;

[0013] A rotating device is further arranged in the control valve body. The shielding member is provided with a through hole at the orthographic projection position of the connection port of the first outlet pipe, the connection port of the second outlet pipe, the connection port of the third outlet pipe and the connection port of the fourth outlet pipe with respect to the shielding member respectively. The rotating device is used to rotate the shielding member so that at least two of the through holes are exactly aligned with the connection port of the first outlet pipe and the connection port of the third outlet pipe, or so that at least two of the through holes are exactly aligned with the connection port of the second outlet pipe and the connection port of the fourth outlet pipe.

[0014] As a further improvement of an embodiment of the present invention, the first inlet pipe is connected to the compressor, the first outlet pipe is connected to the freezing evaporator, the second outlet pipe is connected to the refrigerating evaporator, the second inlet pipe and the third outlet pipe are respectively connected to the dehumidifying device, and the fourth outlet pipe is connected to the second inlet pipe.

[0015] As a further improvement of an embodiment of the present invention, when the freezing evaporator is refrigerating, rotate the shielding member so that the through hole connects the first outlet pipe and the third outlet pipe; when the refrigerating evaporator is refrigerating, rotate the shielding member so that the through hole connects the second outlet pipe and the fourth outlet pipe.

[0016] As a further improvement of an embodiment of the present invention, the refrigeration system further includes a condenser, and the condenser is respectively connected to the compressor and the refrigerant flow direction control device.

[0017] To achieve the above-mentioned invention object, the present invention provides a control method, which is applied to the refrigeration system as described above, and includes:

[0018] When the freezing evaporator is refrigerating, the control valve device controls the refrigerant to flow through the dew removal device and then to the freezing evaporator;

[0019] When the refrigerating evaporator is refrigerating, the control valve device controls the refrigerant to directly flow to the refrigerating evaporator without passing through the dew removal device.

[0020] As a further improvement of an embodiment of the present invention, "when the freezing evaporator is refrigerating, the control valve device controls the refrigerant to flow through the dew removal device and then to the freezing evaporator" specifically includes:

[0021] When the freezing evaporator is refrigerating, control the first outlet and the third outlet of the control valve device to be communicated;

[0022] "When the refrigerating evaporator is refrigerating, the control valve device controls the refrigerant to directly flow to the refrigerating evaporator without passing through the dew removal device" specifically includes:

[0023] When the refrigerating evaporator is refrigerating, control the second outlet and the fourth outlet of the control valve device to be communicated.

[0024] To achieve the above-mentioned invention object, the present invention provides a refrigeration device, which has the refrigeration system as described above.

[0025] Compared with the prior art, the present invention designs a control valve device and applies the control valve device to the refrigeration system. When the refrigerating evaporator is refrigerating, the control valve device is used to control the refrigerant to directly flow to the refrigerating evaporator without passing through the dew removal device, avoiding problems such as an increase in energy consumption caused by hot refrigerant passing through the dew removal device, so as to achieve an energy-saving effect. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of a refrigeration system in an embodiment of the present invention;

[0027] Figure 2 is a schematic structural diagram of a control valve device in an embodiment of the present invention;

[0028] Figure 3 is a top view of a shielding component in an embodiment of the present invention (including the orthographic projection of the connection port of the outlet pipe on the shielding component);

[0029] Figure 4 is a top view of a shielding component in an embodiment of the present invention (including through holes);

[0030] Figures 5a - 5e It is a combination method corresponding to the connection between five different outlet pipes of the control valve device in an embodiment of the present invention;

[0031] Figure 6 It is a schematic flow diagram of a control method in an embodiment of the present invention. Specific Embodiments

[0032] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0033] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0034] For the convenience of description, terms representing relative spatial positions are used herein to describe the relationship between one unit or feature shown in the drawings and another unit or feature, such as "upper", "lower", "rear", "front", etc. The terms of relative spatial positions may include different orientations of the device in use or operation other than the orientations shown in the drawings. For example, if the device in the drawing is flipped, the unit described as being "below" or "above" other units or features will be located "below" or "above" other units or features. Therefore, the exemplary term "below" can encompass both the lower and upper spatial orientations.

[0035] The present invention provides a refrigeration system, which at least includes a compressor, a refrigerant flow control device, a refrigerating evaporator and a freezing evaporator. The refrigerating evaporator and the freezing evaporator are arranged in parallel, and both are connected in series with the compressor and the refrigerant flow control device at the same time. The refrigerant flow control device is used to control the refrigerant generated by the compressor to flow to the refrigerating evaporator and / or the freezing evaporator;

[0036] The refrigerant flow control device includes a control valve device and a dew removal device;

[0037] When the refrigeration evaporator refrigerates, the control valve device is used to control the refrigerant to flow to the refrigeration evaporator after passing through the dew removal device; when the cold storage evaporator refrigerates, the control valve device is used to control the refrigerant to directly flow to the cold storage evaporator without passing through the dew removal device.

[0038] As Figure 1 and Figure 2 shown, this embodiment provides a refrigeration system, which at least includes a compressor 100, a refrigerant flow direction device 200, a cold storage evaporator 300, and a refrigeration evaporator 400.

[0039] The cold storage evaporator 300 and the refrigeration evaporator 400 are arranged in parallel, and both are connected in series with the compressor 100 and the refrigerant flow direction control device 200 at the same time. The refrigerant flow direction control device 200 is used to control the refrigerant generated by the compressor 100 to flow to the cold storage evaporator 300 and / or the refrigeration evaporator 400.

[0040] Specifically, the refrigerant flow direction control device 200 includes a control valve device 210 and a dew removal device 220. When the refrigeration evaporator 400 refrigerates, the control valve device 210 is used to control the refrigerant flowing out of the compressor 100 to flow to the refrigeration evaporator 400 after passing through the dew removal device 220; when the cold storage evaporator 300 refrigerates, the control valve device 210 is used to control the refrigerant flowing out of the compressor 100 to directly flow to the cold storage evaporator 300 without passing through the dew removal device 220.

[0041] Of course, the refrigeration system also includes the situation where the cold storage evaporator 300 and the refrigeration evaporator 400 refrigerate at the same time. When the cold storage evaporator 300 and the refrigeration evaporator 400 refrigerate at the same time, part of the refrigerant can also flow out of the control valve 210 without passing through the dew removal device 220, which can also reduce the hot refrigerant passing through the dew removal device 220 to a certain extent and reduce energy consumption.

[0042] Specifically, the control valve device 210 includes a control valve body, and at least one inlet channel 211 and two outlet channels 212 are respectively arranged on both sides of the control valve body for controlling the refrigerant flow direction.

[0043] More specifically, the inlet channel 211 includes a first inlet pipe 211a and a second inlet pipe 211b, and the outlet channel 212 includes a first outlet pipe 212a, a second outlet pipe 212b, a third outlet pipe 212c, and a fourth outlet pipe 212d.

[0044] The first inlet pipe 211a, the first outlet pipe 212a, and the second outlet pipe 212b are arranged on one side of the control valve body for controlling the refrigerant flow direction; the second inlet pipe 211b, the third outlet pipe 212c, and the fourth outlet pipe 212d are arranged on the other side of the control valve body for controlling the refrigerant flow direction.

[0045] A shielding member 213 is further provided inside the control valve body. A through hole is provided on the shielding member 213. By controlling the rotation of the shielding member 213, the through hole can connect two of the outlet channels 212 to each other.

[0046] More specifically, the shielding member 213 has a disc-shaped structure, and the orthographic projections of the outlet channels 212 in the plane direction of the shielding member 213 all fall on the shielding member 213.

[0047] Combined with Figure 3 , the connection ports of the first outlet pipe 212a and the second outlet pipe 212b are respectively at the orthographic projections 212a' and 212b' of the shielding member 213, and the distances from the center point of the shielding member 213 are equal. The connection ports of the third outlet pipe 212c and the fourth outlet pipe 212d are respectively at the orthographic projections 212c' and 212d' of the shielding member 213, and the distances from the center point of the shielding member 213 are equal.

[0048] Specifically, the connection port of the first outlet pipe 212a at the orthographic projection 212a' of the shielding member 213, the connection port of the second outlet pipe 212b at the orthographic projection 212b' of the shielding member 213, the connection port of the third outlet pipe 212c at the orthographic projection 212c' of the shielding member 213, and the connection port of the fourth outlet pipe 212d at the orthographic projection 212d' of the shielding member 213 are all at equal distances from the center point of the shielding member 213.

[0049] The present invention places no restrictions on the positions of the orthographic projections of the connection port of the first inlet pipe 211a on the shielding member 213 and the connection port of the second inlet pipe 211b on the shielding member 213. The orthographic projections of the two can be set to coincide, or can be set at different positions.

[0050] More specifically, a rotating device is further provided inside the control valve body. As Figure 4 shown, a through hole 214 is provided at each of the positions of the orthographic projections 212a', 212b', 212c', and 212d' of the connection port of the first outlet pipe 212a, the connection port of the second outlet pipe 212b, the connection port of the third outlet pipe 212c, and the connection port of the fourth outlet pipe 212d on the shielding member. The rotating device is used to rotate the shielding member 213 at least so that two of the through holes 214 are exactly aligned with the connection port of the first outlet pipe 212a and the connection port of the third outlet pipe 212c, or so that two of the through holes are exactly aligned with the connection port of the second outlet pipe 212b and the connection port of the fourth outlet pipe 212d.

[0051] Of course, the control valve device provided in this embodiment can not only connect the connection port of the first outlet pipe 212a with the connection port of the third outlet pipe 212c and the connection port of the second outlet pipe 212b with the connection port of the fourth outlet pipe 212d, but also have three other connection structures. For example Figures 5a - 5d as shown

[0052] For the convenience of description, the size of the through hole 214 in the figure is slightly larger than the orthographic projection size of the connection port of each outlet pipe on the shielding member 213. However, in actual applications, the size of the through hole 214 can be set to be less than or equal to the orthographic projection size of the connection port of the outlet pipe on the shielding member 213

[0053] For example Figure 5a , rotate the shielding member 213 so that one through hole 214 aligns with the orthographic projection 212a' of the first outlet pipe 212a on the shielding member 213, and the other through hole 214 aligns with the orthographic projection 212c' of the third outlet pipe 212c on the shielding member 213, then the first outlet pipe 212a and the third outlet pipe 212c can be connected

[0054] For example Figure 5b , rotate the shielding member 213 counterclockwise so that one through hole 214 aligns with the orthographic projection 212a' of the first outlet pipe 212a on the shielding member 213, and the other through hole 214 aligns with the orthographic projection 212d' of the fourth outlet pipe 212d on the shielding member 213, then the first outlet pipe 212a and the fourth outlet pipe 212d can be connected

[0055] For example Figure 5c , continue to rotate the shielding member 213 counterclockwise so that each through hole 214 does not align with the projection of any outlet channel on the shielding member 213, that is, close the outlet channels of the control valve device

[0056] For example Figure 5d , continue to rotate the shielding member 213 counterclockwise so that one through hole 214 aligns with the orthographic projection 212b' of the second outlet pipe 212b on the shielding member 213, and the other through hole 214 aligns with the orthographic projection 212c' of the third outlet pipe 212c on the shielding member 213, then the second outlet pipe 212b and the third outlet pipe 212c can be connected

[0057] For example Figure 5e , continue to rotate the shielding member 213 counterclockwise so that one through hole 214 aligns with the orthographic projection 212b' of the second outlet pipe 212b on the shielding member 213, and the other through hole 214 aligns with the orthographic projection 212d' of the fourth outlet pipe 212d on the shielding member 213, then the second outlet pipe 212b and the fourth outlet pipe 212d can be connected

[0058] In this way, according to different scenarios of the application of the control valve device, the shielding component can be rotated to connect different two outlet pipes to meet different requirements.

[0059] Refer to Figure 1 again. Connect the first inlet pipe 211a to the compressor 100, the first outlet pipe 212a to the freezing evaporator 400, the second outlet pipe 212b to the refrigerating evaporator 300, the second inlet pipe 211b and the third outlet pipe 212c to the dew removal device 220 respectively, and the fourth outlet pipe 212d to the second inlet pipe 212b.

[0060] Specifically, when the freezing evaporator 400 is refrigerating, rotate the shielding component 213 so that the through hole 214 connects the first outlet pipe 212a and the third outlet 212c; when the refrigerating evaporator 300 is refrigerating, rotate the shielding component 213 so that the through hole 214 connects the second outlet pipe 212b and the fourth outlet pipe 212d. That is to say, when the freezing evaporator 400 is refrigerating, the refrigerant flowing out of the compressor 100 flows into the control valve device 210 from the first inlet pipe 211a, and then flows out from the third outlet pipe 212c. The refrigerant then enters the control valve device 210 from the second inlet pipe 211b after passing through the dew removal device 220, and then flows into the freezing evaporator 400 through the first outlet pipe 212a; when the refrigerating evaporator 300 is refrigerating, the refrigerant flowing out of the compressor 100 flows into the control valve device 210 from the first inlet pipe 211a, and then flows out from the fourth outlet pipe 212d. The refrigerant directly enters the control valve device 210 from the second inlet pipe 211b, and then flows into the refrigerating evaporator 300 through the second outlet pipe 212b. By using this control valve device 200, when the refrigerating evaporator 300 is refrigerating, the hot refrigerant can directly flow into the refrigerating evaporator without passing through the dew removal device 220, so as to reduce energy consumption and achieve the effect of energy saving.

[0061] Furthermore, the refrigeration system further includes a condenser 500, and the condenser 500 is respectively connected to the compressor 100 and the refrigerant flow control device 200.

[0062] As Figure 6 shown, the present invention provides a control method, which is applied to the refrigeration system described in any of the above embodiments, and includes:

[0063] When the freezing evaporator is refrigerating, the control valve device controls the refrigerant to flow through the dew removal device and then to the freezing evaporator.

[0064] When the refrigerating evaporator is refrigerating, the control valve device controls the refrigerant to directly flow to the refrigerating evaporator without passing through the dew removal device.

[0065] The step of "when the freezing evaporator is refrigerating, the control valve device controls the refrigerant to flow to the freezing evaporator after passing through the dew removal device" specifically includes:

[0066] When the freezing evaporator is refrigerating, the first outlet and the third outlet of the control valve device are controlled to communicate.

[0067] The step of "when the refrigerating evaporator is refrigerating, the control valve device controls the refrigerant to directly flow to the refrigerating evaporator without passing through the dew removal device" specifically includes:

[0068] When the refrigerating evaporator is refrigerating, the second outlet and the fourth outlet of the control valve device are controlled to communicate.

[0069] The present invention also provides a refrigeration device, and the refrigeration device has the refrigeration system described in any one of the above embodiments.

[0070] In summary, the present invention designs a control valve device and applies the control valve device to the refrigeration system. When the refrigerating evaporator is refrigerating, the control valve device is used to control the refrigerant to directly flow to the refrigerating evaporator without passing through the dew removal device, avoiding problems such as an increase in energy consumption caused by the hot refrigerant passing through the dew removal device, so as to achieve an energy-saving effect. Moreover, the control valve device designed by the present invention can also be applied to other scenarios, and the communication between the outlet pipes can be adjusted as needed.

[0071] It should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0072] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not used to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigeration system, characterized in that, It includes at least a compressor, a refrigerant flow control device, a refrigerating evaporator and a freezing evaporator. The refrigerating evaporator and the freezing evaporator are arranged in parallel, and both are connected in series with the compressor and the refrigerant flow control device at the same time. The refrigerant flow control device is used to control the refrigerant generated by the compressor to flow to the refrigerating evaporator and / or the freezing evaporator; The refrigerant flow control device includes a control valve device and a dew removal device; When the freezing evaporator refrigerates, the control valve device is used to control the refrigerant to flow to the freezing evaporator after passing through the dew removal device; when the refrigerating evaporator refrigerates, the control valve device is used to control the refrigerant to directly flow to the refrigerating evaporator without passing through the dew removal device.

2. The refrigeration system according to claim 1, wherein, The control valve device includes a control valve body. At least one inlet pipe and two outlet pipes are respectively arranged on two side surfaces of the control valve body for controlling the refrigerant flow direction. A shielding member is also arranged in the control valve body, and a through hole is arranged on the shielding member. By controlling the rotation of the shielding member, the through hole can make two of the outlet pipes communicate with each other.

3. The refrigeration system according to claim 2, wherein, The shielding member is in a disc-shaped structure, and the orthographic projections of the outlet channels on the plane of the shielding member all fall on the shielding member.

4. The refrigeration system according to claim 3, characterized in that, The inlet channels include a first inlet pipe and a second inlet pipe, and the outlet channels include a first outlet pipe, a second outlet pipe, a third outlet pipe and a fourth outlet pipe. The first inlet pipe, the first outlet pipe and the second outlet pipe are arranged on one side surface of the control valve body for controlling the refrigerant flow direction, and the second inlet pipe, the third outlet pipe and the fourth outlet pipe are arranged on the other side surface of the control valve body for controlling the refrigerant flow direction; The distances from the connection ports of the first outlet pipe and the second outlet pipe to the center point of the shielding member in the orthographic projections of the shielding member are equal respectively, and the distances from the connection ports of the third outlet pipe and the fourth outlet pipe to the center point of the shielding member in the orthographic projections of the shielding member are equal respectively; A rotating device is also arranged in the control valve body. The shielding member is provided with a through hole at the orthographic projection positions of the connection ports of the first outlet pipe, the second outlet pipe, the third outlet pipe and the fourth outlet pipe on the shielding member respectively. The rotating device is used to rotate the shielding member at least so that two of the through holes are exactly aligned with the connection port of the first outlet pipe and the connection port of the third outlet pipe, or so that two of the through holes are exactly aligned with the connection port of the second outlet pipe and the connection port of the fourth outlet pipe.

5. The refrigeration system according to claim 4, characterized in that, The first inlet pipe is connected to the compressor, the first outlet pipe is connected to the freezing evaporator, the second outlet pipe is connected to the refrigerating evaporator, the second inlet pipe and the third outlet pipe are respectively connected to the dew removal device, and the fourth outlet pipe is connected to the second inlet pipe.

6. The refrigeration system according to claim 5, characterized in that, When the refrigeration evaporator refrigerates, rotate the shielding member so that the through hole communicates the first outlet pipe and the third outlet pipe; when the refrigerated evaporator refrigerates, rotate the shielding member so that the through hole communicates the second outlet pipe and the fourth outlet pipe.

7. The refrigeration system according to claim 1, characterized in that, The refrigeration system further includes a condenser, and the condenser is respectively connected to the compressor and the refrigerant flow control device.

8. A control method, characterized in that, The control method is applied to the refrigeration system according to any one of claims 1-7, and includes: When the refrigeration evaporator refrigerates, the control valve device controls the refrigerant to flow to the refrigeration evaporator after passing through the dew removal device; When the refrigerated evaporator refrigerates, the control valve device controls the refrigerant to directly flow to the refrigerated evaporator without passing through the dew removal device.

9. The control method according to claim 8, wherein, "When the refrigeration evaporator refrigerates, the control valve device controls the refrigerant to flow to the refrigeration evaporator after passing through the dew removal device" specifically includes: When the refrigeration evaporator refrigerates, control the first outlet and the third outlet of the control valve device to communicate; "When the refrigerated evaporator refrigerates, the control valve device controls the refrigerant to directly flow to the refrigerated evaporator without passing through the dew removal device" specifically includes: When the refrigerated evaporator refrigerates, control the second outlet and the fourth outlet of the control valve device to communicate.

10. A refrigeration device, characterized in that, The refrigeration equipment has the refrigeration system according to any one of claims 1-7.

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