Air conditioner throttling structure and air conditioner system
By introducing a parallel third throttle member into the air-conditioning system and using a check valve structure, the problem of mutual influence of the evaporator coil flow rate is solved, and the stability and adjustment accuracy of the air-conditioning system are improved.
Patent Information
- Application Number
- CN202422169949.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-04
AI Technical Summary
In the existing air conditioning system, the flow rates of the two sets of coils of the evaporator affect each other, resulting in the overheat affecting each other, resulting in unstable and inaccurate adjustments, and affecting the stability of the system.
The third throttle member is introduced in the air conditioning system, the first and second throttle members are connected in parallel, and the flow rate is limited through a check valve to avoid the overheating of the two groups of coils affecting each other. The suction temperature sensor is used to adjust the opening of the throttle member.
It effectively avoids the overheating of the two sets of coils affecting each other, improves the adjustment accuracy and stability of the air conditioning system, and ensures the overall stability of the system.
Smart Images
Figure CN223050253U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of air conditioning equipment, and particularly to an air conditioning throttling structure. Additionally, this application also relates to an air conditioning system including the above air conditioning throttling structure. Background Art
[0002] The main components of an air conditioner include a compressor, a condenser, a throttling device, an evaporator, a fan, a fluorine pump (optional), etc. Currently, the evaporator is mainly in the V / W form, and half of the evaporator coils correspond to an electronic expansion valve for throttling adjustment. For large cooling capacity units and in the fluorine pump mode, the adjustment range of a single electronic expansion valve no longer meets the requirements. Therefore, a third electronic expansion valve is added to supplement and adjust the system flow rate, thereby avoiding the problem of insufficient system flow rate in large cooling capacity units or the fluorine pump mode. However, it is found during the implementation of this application that when the third electronic expansion valve is connected in parallel with the other two electronic expansion valves, the flow rates of the two electronic expansion valves will affect each other, resulting in the superheat degrees of the two sets of coils affecting each other, causing unstable and inaccurate adjustment, and affecting the stability of the air conditioning system.
[0003] Therefore, in view of the above technical problems, how to improve the stability of the air conditioning system is a technical problem that needs to be solved by those skilled in the art. Utility Model Content
[0004] The purpose of this application is to provide an air conditioning throttling structure, which can effectively prevent the flow rates of two sets of coils from affecting each other, thereby effectively avoiding the mutual influence of the superheat degrees of the two sets of coils and improving the stability of the air conditioning system.
[0005] To achieve the above purpose, this application provides an air conditioning throttling structure, including a first throttling member corresponding to a part of the coils of the evaporator, a second throttling member corresponding to another part of the coils of the evaporator, and a third throttling member connected in parallel with both the first throttling member and the second throttling member. The first end of the third throttling member is respectively connected to the first end of the first throttling member and the first end of the second throttling member, and the second end of the third throttling member is respectively connected to the second end of the first throttling member and the second end of the second throttling member through a first one-way valve and a second one-way valve. The flow direction of the first one-way valve is from the second end of the third throttling member to the pipeline where the first throttling member is located, and the flow direction of the second one-way valve is from the second end of the third throttling member to the pipeline where the second throttling member is located.
[0006] Preferably, after the first ends of the first throttling member, the second throttling member, and the first end of the third throttling member are connected, they are connected to the condenser.
[0007] Preferably, two branch pipelines are provided at the second end of the third throttling member. The two branch pipelines are respectively connected to the second end of the first throttling member and the second end of the second throttling member, and the first one-way valve and the second one-way valve are respectively arranged on the two branch pipelines.
[0008] Preferably, the two branch pipelines have the same length.
[0009] Preferably, a suction temperature sensor is correspondingly arranged on the pipeline where the coil is located, and the suction temperature sensor corresponds to the first throttling member and the second throttling member respectively, so as to adjust the opening degrees of the first throttling member and the second throttling member according to the superheat of the coil.
[0010] An air-conditioning system, comprising:
[0011] A throttling structure, which is the air-conditioning throttling structure described in any one of the above;
[0012] A condenser, the first end of the condenser is connected to the first end of the throttling structure, and is used to provide a heat exchange medium for the throttling structure;
[0013] An evaporator, the first end of the evaporator is connected to the second end of the throttling structure, and is used to receive the heat exchange medium after passing through the throttling structure;
[0014] A pump body, the pump body is a compressor or a fluorine pump, and a circulation path is formed by the pump body, the condenser, the throttling structure, and the evaporator.
[0015] Preferably, the pump body is a compressor, the first end of the pump body is connected to the second end of the evaporator, and is used to receive the heat exchange medium after passing through the evaporator, the second end of the pump body is connected to the second end of the condenser, and is used to provide the heat exchange medium for the condenser, or,
[0016] The pump body is a fluorine pump, the first end of the pump body is connected to the condenser, and is used to receive the heat exchange medium after passing through the condenser, and the second end of the fluorine pump is connected to the first end of the throttling structure, and is used to provide the heat exchange medium for the throttling structure.
[0017] Preferably, the evaporator is V-shaped or W-shaped, and is divided into two groups or multiple groups of coils with the axis of symmetry of the evaporator as the boundary. The number of throttling members in the throttling structure is the same as the number of coil groups, and they are connected in one-to-one correspondence.
[0018] Preferably, the second end of the third throttling member in the throttling structure is provided with branch pipelines with the same number as the number of coil groups.
[0019] Preferably, a suction temperature sensor is arranged on the pipeline where the first end of the pump body is connected to the second end of the evaporator, or,
[0020] A suction temperature sensor is provided on the pipeline where the second end of the evaporator is connected to the second end of the condenser;
[0021] The suction temperature sensor is arranged in one-to-one correspondence with each group of coils of the evaporator.
[0022] Compared with the prior art, the technical solution provided by this application has at least the following beneficial effects:
[0023] The first end of the third throttling member of this application is respectively connected to the first end of the first throttling member and the first end of the second throttling member. The second end of the third throttling member is respectively connected to the second end of the first throttling member and the second end of the second throttling member through a first one-way valve and a second one-way valve, so that the third throttling member is arranged in parallel with the first throttling member and the second throttling member at the same time. Under the action of the one-way valve, when the third throttling member is closed, the heat exchange medium only flows through the pipelines where the first throttling member and the second throttling member are located. At the same time, through the two one-way valves, the flow rate in the pipeline where the first throttling member is located can be prevented from affecting the flow rate in the pipeline where the second throttling member is located to a certain extent; when the third throttling member is opened, under the action of the one-way valve, the pipeline where the third throttling member is located will only flow into the pipeline where the first throttling member is located or the pipeline where the second throttling member is located. Similarly, the mutual influence of the flow rates in the pipelines where the first throttling member is located and the second throttling member is located can be effectively avoided, and further the mutual influence of the superheats of the two pipelines can be effectively avoided, improving the adjustment accuracy and stability of the throttling member, thereby ensuring the overall stability of the air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.
[0025] Figure 1 It is a schematic diagram of the air-conditioning throttling structure provided by the embodiment of the present application;
[0026] Figure 2 It is a schematic diagram of the structure when the pump body is a compressor in the embodiment of the present application;
[0027] Figure 3 It is a schematic diagram of the structure when the pump body is a fluorine pump in the embodiment of the present application.
[0028] In the figure: 1 - pump body; 2 - condenser; 3 - throttling structure; 31 - first throttling component; 32 - second throttling component; 33 - third throttling component; 34 - first check valve; 35 - second check valve; 4 - evaporator; 41 - first coil; 42 - second coil. Specific embodiments
[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0030] It should be noted that in this embodiment, the orientation or positional relationship indicated by "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0031] In order to enable those skilled in the art of this technology to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0032] Currently, the evaporator 4 is mainly in the V / W form. For a V-shaped or W-shaped evaporator 4, half of the coils correspond to one throttling component for throttling adjustment. For large-cooling-capacity units and in the fluorine pump mode, the adjustment range of a single throttling component no longer meets the requirements, and a supplementary throttling component needs to be added for flow supplementary adjustment. However, using two throttling components to adjust half of the coils will cause problems such as small opening and cost. Therefore, a technical solution of adding one throttling component to the entire air-conditioning system is adopted. That is, half of the coils of the evaporator 4 correspond to one throttling component, and there is a third throttling component for flow supplementary adjustment of the system, thereby avoiding the problem of insufficient system flow in large-cooling-capacity units or the fluorine pump mode.
[0033] For the above technical solution, the adjustment logic is that half of the coil corresponds to one throttling element and one suction temperature sensor, the superheat is detected and calculated, and the opening of the corresponding throttling element is adjusted according to the superheat, and one throttling element corresponds to one superheat. The added third throttling element is throttled in parallel with the two throttling elements corresponding to the coil at the same time. The third throttling element performs supplementary throttling adjustment on the other two throttling elements (the two throttling elements corresponding to the coil) when needed. However, the parallel pipelines of the three throttling elements form a passage, resulting in the flow rates of the other two throttling elements (the two throttling elements corresponding to the coil) affecting each other when the third throttling element is opened, the superheat fluctuates, the adjustment is unstable and inaccurate, which is disadvantageous to the system stability. At the same time, the system has uneven liquid distribution, resulting in a decrease in capacity.
[0034] Based on the above situation, the present application provides an air-conditioning throttling structure, which adds check valve elements between the three throttling elements, so as to limit the mutual influence of the superheats in the pipelines corresponding to the two coils.
[0035] Specifically, the air-conditioning throttling structure of the present application includes a first throttling element 31, a second throttling element 32 and a third throttling element 33. Please refer to Figure 1 , the first throttling element 31 is correspondingly connected to a part of the coil (the first coil 41) of the evaporator 4, the second throttling element 32 is correspondingly connected to another part of the coil (the second coil 42) of the evaporator 4, and the third throttling element 33 is arranged in parallel with the first throttling element 31 and the second throttling element 32 at the same time. That is, the first end of the third throttling element 33 is respectively connected to the first end of the first throttling element 31 and the first end of the second throttling element 32, and the second end of the third throttling element 33 is connected to the second end of the first throttling element 31 and the second end of the second throttling element 32. It should be noted that the above connection means being connected through pipelines to realize the flow of the heat exchange medium.
[0036] At the same time, a first check valve 34 and a second check valve 35 are respectively connected to the second end of the third throttling element 33. The first check valve 34 is connected to the second end of the first throttling element 31, and the second check valve 35 is connected to the second end of the second throttling element 32. The flow direction of the first check valve 34 is from the second end of the third throttling element 33 to the pipeline where the first throttling element 31 is located, and the flow direction of the second check valve 35 is from the second end of the third throttling element 33 to the pipeline where the second throttling element 32 is located. That is to say, on the basis of the original throttling element controlling the flow rate, the connection effect between the pipeline where the first throttling element 31 is located and the pipeline where the second throttling element 32 is located is blocked by two check valves, so as to avoid the mutual influence of the superheats of the two corresponding pipelines.
[0037] In summary of the above embodiments, the first end of the third throttle member 33 of the present application is respectively connected to the first end of the first throttle member 31 and the first end of the second throttle member 32. The second end of the third throttle member 33 is respectively connected to the second end of the first throttle member 31 and the second end of the second throttle member 32 through a first one-way valve 34 and a second one-way valve 35. Thus, the third throttle member 33 is arranged in parallel with the first throttle member 31 and the second throttle member 32 at the same time. Under the action of the one-way valves, when the third throttle member 33 is closed, the heat exchange medium only flows through the pipelines where the first throttle member 31 and the second throttle member 32 are located. At the same time, through the two one-way valves, the flow rate in the pipeline where the first throttle member 31 is located will not affect the flow rate in the pipeline where the second throttle member 32 is located. When the third throttle member 33 is opened, under the action of the one-way valves, the pipeline where the third throttle member 33 is located will only flow into the pipeline where the first throttle member 31 is located or the pipeline where the second throttle member 32 is located. Similarly, it can avoid the mutual influence of the flow rates in the pipelines where the first throttle member 31 and the second throttle member 32 are located, and further avoid the mutual influence of the superheat degrees of the two pipelines, improving the regulation accuracy and stability of the throttle member, thereby ensuring the overall stability of the air conditioning system.
[0038] It should be noted that the so-called first end and second end do not limit the order, but are only used to distinguish the connection relationship between the two different ends of the throttle member or other components.
[0039] In addition, the first end of the first throttle member 31, the first end of the second throttle member 32, and the first end of the third throttle member 33 are connected and then connected to the condenser 2. That is to say, one end of the first throttle member 31, the second throttle member 32, and the third throttle member 33 are connected to each other, and after being connected, they are connected to the condenser 2. Therefore, after the heat exchange medium of the condenser 2 completes heat exchange, it can respectively enter the pipelines corresponding to the three throttle members.
[0040] Two branch pipelines are provided at the second end of the third throttle member 33. Please refer to Figure 1 , a main pipeline is first led out from the second end of the third throttle member 33, and then the main pipeline is divided into two branch pipelines, and the two branch pipelines are respectively connected to the second end of the first throttle member 31 and the second end of the second throttle member 32. When additional flow needs to be supplemented, the third throttle member 33 is opened, and flow is supplemented to the pipelines where the first throttle member 31 and the second throttle member 32 are located through the two branch pipelines. At the same time, under the limit of the one-way valves, the mutual influence of the superheat degrees of the pipelines where the first throttle member 31 and the second throttle member 32 are located is avoided.
[0041] Of course, if the number of coil pipes is greater than two groups, the corresponding number of throttle parts should also be consistent with the number of coil pipe groups. At the same time, one more throttle part is needed to be connected in parallel with the above throttle parts as a supplementary throttle part. Then the corresponding number of branch pipelines and check valves should also be consistent with the number of coil pipe groups to ensure that each group of coil pipes corresponds to one throttle part and one check valve.
[0042] Meanwhile, in order to make the flow rates distributed by the third throttle part 33 to each group of coil pipes as consistent or synchronous as possible, the lengths of two or more branch pipelines can also be set to be the same, so as to make the liquid distribution of the system more uniform.
[0043] An intake air temperature sensor is also arranged on each group of coil pipes. Specifically, it can be arranged on the pipeline where the coil pipe is located, and the intake air temperature sensors respectively correspond to the first throttle part 31 and the second throttle part 32, so as to adjust the opening degrees of the first throttle part 31 and the second throttle part 32 according to the superheat degree of the coil pipe. As for how to detect and calculate the superheat degree and adjust the opening degree of the corresponding valve according to the superheat degree, reference can be made to the existing technology and will not be elaborated here.
[0044] In addition, the present application also provides an air conditioning system. The air conditioning system includes a throttling structure 3, a condenser 2, an evaporator 4 and a pump body 1. The throttling structure 3 is any one of the above air conditioning throttling structures, that is, the throttling structure 3 also includes a first throttle part 31, a second throttle part 32, a third throttle part 33 and corresponding pipelines. The condenser 2 can be a condenser 2 in the existing technology. The first end of the condenser 2 is connected to the first end of the throttling structure 3, that is, the condenser 2 is respectively connected to the first ends of the first throttle part 31, the second throttle part 32 and the third throttle part 33 through pipelines, so as to provide a heat exchange medium for the first throttle part 31, the second throttle part 32 and the third throttle part 33.
[0045] The evaporator 4 can be an evaporator 4 in the existing technology, usually in a V shape or a W shape. Taking the V-shaped or W-shaped single-system evaporator 4 as an example for introduction, the first end of the evaporator 4 is connected to the second end of the throttling structure 3, that is, the evaporator 4 is respectively connected to the second ends of the first throttle part 31 and the second throttle part 32 through pipelines, so as to receive the heat exchange medium after passing through the first throttle part 31 and the second throttle part 32. In addition, the coil pipes are divided into two or more groups with the symmetry axis of the evaporator 4 as the boundary. The number of throttle parts in the throttling structure 3 is consistent with the number of coil pipe groups and is connected in one-to-one correspondence. At the same time, another throttle part is needed as the third throttle part 33 to provide the function of supplementing the flow rate.
[0046] The pump body 1 can be a power component such as a compressor or a fluorine pump, but is not limited to a compressor and a fluorine pump. When the pump body 1 is a compressor, please refer to Figure 2, the first end of the compressor is connected to the second end of the evaporator 4 for receiving the heat exchange medium after passing through the evaporator 4, that is, the first end of the compressor is connected to multiple groups of coils in the evaporator 4. And the second end of the compressor is connected to the second end of the condenser 2 to provide the heat exchange medium for the condenser 2. When the pump body 1 is a fluorine pump, please refer to Figure 3 , the first end of the fluorine pump is connected to the condenser 2 for receiving the heat exchange medium after passing through the condenser 2, and the second end of the fluorine pump is connected to the first end of the throttling structure 3 for providing the heat exchange medium for the throttling structure 3. The pump body 1, the condenser 2, the throttling structure 3, and the evaporator 4 form a circulation path, thus constituting a complete air-conditioning system.
[0047] On the basis of the above embodiments, when the pump body 1 is a compressor, multiple groups of coils in the evaporator 4 can be respectively connected to the first end of the compressor through pipelines, and a suction temperature sensor is arranged on the pipeline between each group of coils and the compressor, so that the suction temperature sensor corresponds to each group of coils one by one to detect the superheat degree corresponding to each group of coils; when the pump body 1 is a fluorine pump, multiple groups of coils in the evaporator 4 can be connected to the second end of the condenser 2 through pipelines, and corresponding suction temperature sensors are arranged on the pipelines, so that the suction temperature sensors correspond to each group of coils one by one to detect the superheat degree corresponding to each group of coils.
[0048] For the above throttling components, throttling devices such as electronic expansion valves can be used, but including but not limited to electronic expansion valves. By arranging multiple throttling components in parallel and arranging check valves on the parallel throttling components, the mutual influence between the superheat degrees of the first coil 41 and the second coil 42 can be restricted. When the third throttling component 33 is closed, the pipeline where the third throttling component 33 is located is in a closed state, and the branch pipeline where the check valve is located can only achieve one-way flow. Therefore, the flow rates in the pipelines corresponding to the first coil 41 and the second coil 42 will not affect each other. When the third throttling component 33 is opened, the pipeline where the third throttling component 33 is located is in an open state, and the flow rate of the coil can be supplemented. Similarly, due to the existence of the check valve, the heat exchange medium will only flow from the third throttling component 33 to the pipeline where the first throttling component 31 is located or to the pipeline where the second throttling component 32 is located, and it can also avoid the mutual influence of the flow rates in the pipelines corresponding to the two groups of coils, thereby improving the regulation stability and accuracy.
[0049] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.
[0050] In this text, specific examples are used to illustrate the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can still be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.
Claims
1. An air conditioning flow control structure, characterized in that: The evaporator comprises a first throttling member (31) corresponding to a part of the coils of the evaporator (4), a second throttling member (32) corresponding to another part of the coils of the evaporator (4), and a third throttling member (33) connected in parallel with the first throttling member (31) and the second throttling member (32), wherein a first end of the third throttling member (33) is respectively connected to a first end of the first throttling member (31) and a first end of the second throttling member (32), and a second end of the third throttling member (33) is respectively connected to a second end of the first throttling member (31) and a second end of the second throttling member (32) via a first one-way valve (34) and a second one-way valve (35), wherein a flow direction of the first one-way valve (34) is from the second end of the third throttling member (33) to a pipeline where the first throttling member (31) is located, and a flow direction of the second one-way valve (35) is from the second end of the third throttling member (33) to a pipeline where the second throttling member (32) is located.
2. The air conditioning flow structure according to claim 1, characterized in that: The first end of the first throttling member (31), the first end of the second throttling member (32), and the first end of the third throttling member (33) are connected to the condenser (2).
3. The air conditioning flow structure according to claim 1, characterized in that: The second end of the third throttling member (33) is provided with two branch pipelines, the two branch pipelines are respectively connected to the second end of the first throttling member (31) and the second end of the second throttling member (32), and the first one-way valve (34) and the second one-way valve (35) are respectively arranged on the two branch pipelines.
4. The air conditioning flow structure according to claim 3, characterized in that: The two branch pipelines have the same length.
5. The air conditioning flow control structure according to any one of claims 1 to 4, characterized in that: An intake air temperature sensor is correspondingly arranged on the pipeline where the coil is located, and the intake air temperature sensor corresponds to the first throttling member (31) and the second throttling member (32) respectively, so as to adjust the opening of the first throttling member (31) and the second throttling member (32) according to the superheat of the coil.
6. An air conditioning system, characterized in that: include: The throttling structure (3) is the air conditioning throttling structure according to any one of claims 1 to 5; A condenser (2), wherein a first end of the condenser (2) is connected to a first end of the throttling structure (3) and is used to provide a heat exchange medium for the throttling structure (3); an evaporator (4), wherein a first end of the evaporator (4) is connected to a second end of the throttling structure (3) and is used to receive the heat exchange medium after passing through the throttling structure (3); A pump body (1), wherein the pump body (1) is a compressor or a fluorine pump, and the pump body (1), the condenser (2), the throttling structure (3), and the evaporator (4) form a circulation passage.
7. The air conditioning system according to claim 6, characterized in that: The pump body (1) is a compressor, the first end of the pump body (1) is connected to the second end of the evaporator (4) for receiving the heat exchange medium after passing through the evaporator (4), the second end of the pump body (1) is connected to the second end of the condenser (2) for providing the condenser (2) with heat exchange medium, or, The pump body (1) is a fluorine pump. The first end of the pump body (1) is connected to the condenser (2) for receiving the heat exchange medium after passing through the condenser (2). The second end of the fluorine pump is connected to the first end of the throttling structure (3) for providing the heat exchange medium to the throttling structure (3).
8. The air conditioning system according to claim 6, characterized in that: The evaporator (4) is V-shaped or W-shaped, and is divided into two or more groups of coils along the axis of symmetry of the evaporator (4); the number of throttling elements in the throttling structure (3) is consistent with the number of the coil groups, and they are connected in a one-to-one correspondence.
9. The air conditioning system according to claim 8, characterized in that: The second end of the third throttling member (33) in the throttling structure (3) is provided with branch pipelines having the same number as the coil groups.
10. The air conditioning system according to claim 7, characterized in that: A suction temperature sensor is provided on a pipeline connecting the first end of the pump body (1) and the second end of the evaporator (4), or, An intake air temperature sensor is provided on a pipeline connecting the second end of the evaporator (4) and the second end of the condenser (2); The suction temperature sensor is arranged in one-to-one correspondence with each group of coils of the evaporator (4).