Air conditioner water loop system provided with cold / hot water switching valve device

Abstract

The utility model discloses an air-conditioning water loop system with a cold / hot water switching valve device, which comprises a water chilling unit evaporator inlet pipeline, an evaporator outlet pipeline, a condenser inlet pipeline and a condenser outlet pipeline, each pipeline is provided with the same valve device, and the cold / hot water switching valve device is connected with the water chilling unit evaporator inlet pipeline and the condenser outlet pipeline through opening and closing of valves. Meanwhile, the valve branch pipe is provided with the flow switch and the water escape valve, the water leakage condition of the valve at the cut-off position can be effectively detected, and the situation that in the prior art, a common valve is likely to leak water or be damaged, water path series flow on the soil side and the load side is caused, and the service life of the valve is prolonged is avoided. The static pressure at the tail end of the buried pipe is too large to cause pipe explosion.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning cold / hot water switching pipeline system's technical field especially install cold / hot water switching valve device's air conditioning water loop system. BACKGROUND

[0002] Air conditioning water system involves cooling and heating load conversion, cold (heat) storage and cold (heat) release conversion, etc., taking large ground source heat pump system as an example: large ground source heat pump air conditioning system is usually provided with valve on the pipeline connected with evaporator and condenser on load side, realizes the position switching of evaporator and condenser. Figure 1 As shown in the drawing, the existing air conditioning system mostly uses ordinary valve, and the existing ordinary valve often has the possibility of water leakage or damage, causing the waterway of soil side and load side of air conditioning system to be in series, increasing the static pressure of soil side buried pipe, and causing the problem of pipe explosion at the end of buried pipe. Therefore, a reliable switching valve device is needed to make up for the shortcomings and deficiencies of the existing technology. SUMMARY

[0003] The technical problem to be solved by the present application is that the existing ordinary valve often has the possibility of water leakage or damage after long-term use, causing the waterway of soil side and load side of air conditioning system to be in series, and causing the problem of pipe explosion at the end of buried pipe.

[0004] To solve the above technical problems, the application provides a water loop system of an air conditioner provided with a cold / hot water switching valve device, which comprises: a cold water chiller evaporator inlet pipeline, which comprises a load side first output pipeline and a soil side first output pipeline, the load side first output pipeline is sequentially connected with a load side output end, a load side circulating pump, a valve device and an evaporator inlet, and the soil side first output pipeline is sequentially connected with a soil side output end, a soil side circulating pump, the valve device and the evaporator inlet; a cold water chiller evaporator outlet pipeline, which comprises a load side first input pipeline and a soil side first input pipeline, the load side first input pipeline is sequentially connected with an evaporator outlet, the valve device and a load side input end, and the soil side first input pipeline is sequentially connected with the evaporator outlet, the valve device and a soil side input end; a cold water chiller condenser inlet pipeline, which comprises a load side second output pipeline and a soil side second output pipeline, the load side second output pipeline is sequentially connected with a load side output end, a load side circulating pump, the valve device and a condenser inlet, and the soil side second output pipeline is sequentially connected with a soil side output end, a soil side circulating pump, the valve device and the condenser inlet; and a cold water chiller condenser outlet pipeline, which comprises a load side second input pipeline and a soil side second input pipeline, the load side second input pipeline is sequentially connected with a condenser outlet, the valve device and a load side input end, and the soil side first input pipeline is sequentially connected with the condenser outlet, the valve device and a soil side input end; wherein the valve device comprises a first shutoff valve and a second shutoff valve which are connected in series through pipelines, a branch pipeline is arranged on the pipeline between the first shutoff valve and the second shutoff valve, and a flow switch and a drain valve are arranged on the branch pipeline.

[0005] According to the embodiment of the application, the first shutoff valve, the second shutoff valve and the drain valve are all connected with the controller through wires.

[0006] According to the embodiment of the application, the device on the load side is located at 0-80 m underground.

[0007] According to the embodiment of the application, the pipeline on the soil side is buried in the ground at 6-120 m.

[0008] According to the embodiment of the application, the first shutoff valve on the load side first input pipeline is connected with the load side circulating pump, and the second shutoff valve on the load side first input pipeline is connected with the evaporator inlet through a pipeline.

[0009] According to the embodiment of the application, the first shutoff valve on the load side second input pipeline is connected with the load side circulating pump, and the second shutoff valve on the load side second input pipeline is connected with the condenser inlet through a pipeline.

[0010] According to the embodiment of the application, the first shutoff valve on the soil side first input pipeline is connected with the soil side circulating pump, and the second shutoff valve on the load side first input pipeline is connected with the evaporator inlet through a pipeline.

[0011] According to the embodiment of the application, the first cut-off valve on the soil side second input pipeline is connected with the soil side circulating pump, and the second cut-off valve on the load side first input pipeline is connected with the condenser inlet through a pipeline.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The application adds valve devices on the water inlet pipeline and the water outlet pipeline of the evaporator and the condenser of the air conditioner, and realizes reliable switching of the water circuit of the evaporator and the condenser.

[0014] 2. In the application, the valve device is provided with double cut-off valves to ensure the reliability of the cut-off valves, and a flow switch and a drain valve are arranged on the branch pipe between the pipelines of the two cut-off valves to detect the water leakage at the cut-off position of the pipeline in real time and provide a maintenance signal for fault handling of the valve and the pipeline. When the two cut-off valves are opened at the same time, the pipeline is in a flow state, and the drain valve is closed; when the two cut-off valves are closed at the same time, the pipeline is in a cut-off state, and the drain valve is opened to detect the water leakage of the cut-off valve, thereby avoiding the possibility of water leakage or damage of ordinary valves, causing water flow between the soil side and the load side, and causing the problem of pipe explosion due to excessive static pressure at the end of the buried pipe.

[0015] 3. The valve device of the application is provided with two cut-off valves to ensure the reliability of the cut-off valves and ensure long-term reliable operation of the ground source heat pump. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the application, but not limit the application.

[0017] Figure 1 It is a schematic diagram of the cold / hot water system pipeline of the air conditioner in the prior art;

[0018] Figure 2 It is a schematic diagram of the composition of an air conditioner water loop system provided with a cold / hot water switching valve device according to an example of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the valve device according to an example of the utility model.

[0020] The reference signs are explained as follows:

[0021] 11. evaporator inlet, 12. evaporator outlet, 21. condenser inlet, 22. condenser outlet, 30. load side, 31. load side circulating pump, 32. load side first input pipeline, 33. load side second input pipeline, 34. load side first output pipeline, 35. load side second output pipeline, 40. soil side, 41. soil side circulating pump, 42. soil side first input pipeline, 43. soil side second input pipeline, 44. soil side first output pipeline, 45. soil side second output pipeline, 51. first shutoff valve, 52. second shutoff valve, 53. flow switch, 54. drain valve, 55. branch pipe. DETAILED DESCRIPTION

[0022] To make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0023] Unless otherwise defined, technical terms or scientific terms used herein should be understood as having the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms "first", "second", and similar terms used herein do not denote any order, quantity, or importance, but are used to distinguish different components. Similarly, the terms "one" or "a" or similar terms do not denote a quantity of one but denote the presence of at least one.

[0024] As shown in Figure 2 , Figure 3 The utility model discloses a cold / hot water switching valve device equipped air conditioning water loop system, including cold water set evaporator inlet pipeline, cold water set evaporator outlet pipeline, cold water set condenser inlet pipeline and condenser outlet 22 pipeline, and the same valve device is equipped on each pipeline, realizes the switching of water flow between evaporator and condenser through the opening and closing of valve, and the flow switch 53 and drain valve 54 are configured on the valve branch pipe 55, can effectively detect the water leakage of valve at the cut-off, avoid the possible water leakage or damage of ordinary valve in the prior art, cause the waterway of soil side 40 and load side 30 to be in series, make the end of the buried pipe static pressure too large and cause the pipe to burst.

[0025] In the embodiment, the water chiller evaporator inlet pipeline includes a load side first output pipeline 34 and a soil side first output pipeline 44. The load side first output pipeline 34 is sequentially connected with a load side output end, a load side circulating pump 31, a valve device and an evaporator inlet 11. The soil side first output pipeline 44 is sequentially connected with a soil side 40 output end, a soil side circulating pump 41, a valve device and the evaporator inlet 11.

[0026] Specifically, as shown in Figure 3 the valve device includes a first shutoff valve 51 and a second shutoff valve 52 connected in series through a pipeline. A branch pipeline 55 is arranged between the first shutoff valve 51 and the second shutoff valve 52. A flow switch 53 and a drain valve 54 are arranged on the branch pipeline 55. The flow switch 53 and the drain valve 54 can effectively detect the water leakage of the valve at the shutoff position.

[0027] In the embodiment, the water chiller evaporator outlet pipeline includes a load side first input pipeline 32 and a soil side first input pipeline 42. The load side first input pipeline 32 is sequentially connected with an evaporator outlet 12, a valve device and a load side 30 input end. The soil side first input pipeline 42 is sequentially connected with the evaporator outlet 12, the valve device and a soil side 40 input end.

[0028] Specifically, the first shutoff valve 51 on the load side first input pipeline 32 is connected with the load side circulating pump 31. The second shutoff valve 52 on the load side first input pipeline 32 is connected with the evaporator inlet 11 through a pipeline.

[0029] Specifically, the first shutoff valve 51 on the soil side first input pipeline 42 is connected with the soil side circulating pump 41. The second shutoff valve 52 on the load side first input pipeline 32 is connected with the evaporator inlet 11 through a pipeline.

[0030] In the embodiment, the water chiller condenser inlet pipeline includes a load side second output pipeline 35 and a soil side second output pipeline 45. The load side second output pipeline 35 is sequentially connected with a load side output end, a load side circulating pump 31, a valve device and a condenser inlet 21. The soil side second output pipeline 45 is sequentially connected with a soil side 40 output end, a soil side circulating pump 41, a valve device and the condenser inlet 21.

[0031] In the embodiment, the water chiller condenser outlet pipeline includes a load side second input pipeline 33 and a soil side second input pipeline 43. The load side second input pipeline 33 is sequentially connected with a condenser outlet 22, a valve device and a load side 30 input end. The soil side first input pipeline 42 is sequentially connected with the condenser outlet 22, the valve device and a soil side 40 input end.

[0032] Specifically, the first cut-off valve 51 on the soil side second input pipe 43 is connected with the soil side circulating pump 41, and the second cut-off valve 52 on the load side first input pipe 32 is connected with the condenser inlet 21 through a pipe.

[0033] Specifically, the first cut-off valve 51 on the load side second input pipe 33 is connected with the load side circulating pump 31, and the second cut-off valve 52 on the load side second input pipe 33 is connected with the condenser inlet 21 through a pipe.

[0034] Specifically, the air conditioning water loop system further comprises a controller, and the first cut-off valve 51, the second cut-off valve 52, the drain valve 54 and the flow switch 53 are all connected with the controller through wires.

[0035] Specifically, the load side 30 device can be located at 0-80m underground.

[0036] Specifically, the pipe of the soil side 40 is buried in the ground at 6-120m.

[0037] In the embodiment, a valve device suitable for switching of an air conditioning cold / hot water system is composed of two cut-off valves, a drain valve 54, a flow switch 53 and a branch pipe 55. The valve device is installed on the pipe connecting the user side with the evaporator and the condenser, and the first input pipe and the second input pipe of the load side are switched, the first output pipe and the second output pipe of the load side are switched, the first input pipe and the second input pipe of the soil side are switched, and the first output pipe and the second output pipe of the soil side are switched through opening or closing of the valve device on each pipe, so as to realize switching of the evaporator and the condenser. Two cut-off valves are configured to ensure reliability of the cut-off valve, and the branch pipe 55 is arranged between the two cut-off valve pipes, and the flow switch 53 and the drain valve 54 are arranged on the branch pipe 55, so as to effectively detect water leakage of the cut-off valve. The working principle of the valve device is as follows: when the two cut-off valves are opened at the same time, the pipe is in a flow state, and the drain valve 54 is closed; when the two cut-off valves are closed at the same time, the pipe is in a cut-off state, and the drain valve 54 is opened to detect water leakage of the cut-off valve.

[0038] In summary, the technical scheme of the application has the following beneficial effects:

[0039] 1. The application realizes reliable switching of the water path of the evaporator and the condenser by additionally arranging a valve device on the water inlet pipe and the water outlet pipe of the evaporator and the condenser of the air conditioner.

[0040] 2. The valve device in the application ensures the reliability of the cut-off valve by configuring two cut-off valves. At the same time, a flow switch and a drain valve are configured on the branch pipe between the two cut-off valve pipelines to detect the water leakage at the cut-off position of the pipeline in real time, and provide maintenance signals for the fault handling of the valve and the pipeline. When the two cut-off valves are opened at the same time, the pipeline is in a flow-through state, and the drain valve is closed; when the two cut-off valves are closed at the same time, the pipeline is in a cut-off state, the drain valve is opened, and the water leakage of the cut-off valve is detected, avoiding the possibility of water leakage or damage of ordinary valves, causing the soil side and the load side waterways to flow in series, and causing the pipe at the end of the buried pipe to have excessive static pressure and burst.

[0041] 3. The valve device of the application is configured with two cut-off valves to ensure the reliability of the cut-off valve and ensure the long-term reliable operation of the ground source heat pump.

[0042] The above is only an exemplary embodiment of the application, and is not intended to limit the protection scope of the application, which is determined by the appended claims.

Claims

1. An air conditioning water loop system equipped with a cold / hot water switching valve device, characterized by, It comprises: The water chiller evaporator inlet pipeline, including the load side first output pipeline and the soil side first output pipeline, the load side first output pipeline is connected with the load side output end, the load side circulating pump, the valve device and the evaporator inlet in proper order, the soil side first output pipeline is connected with the soil side output end, the soil side circulating pump, the valve device and the evaporator inlet in proper order; The water chiller evaporator outlet pipeline, including the load side first input pipeline and the soil side first input pipeline, the load side first input pipeline is connected with the evaporator outlet, the valve device and the load side input end in proper order, the soil side first input pipeline is connected with the evaporator outlet, the valve device and the soil side input end in proper order; The water chiller condenser inlet pipeline, including the load side second output pipeline and the soil side second output pipeline, the load side second output pipeline is connected with the load side output end, the load side circulating pump, the valve device and the condenser inlet in proper order, the soil side second output pipeline is connected with the soil side output end, the soil side circulating pump, the valve device and the condenser inlet in proper order; The water chiller condenser outlet pipeline, including the load side second input pipeline and the soil side second input pipeline, the load side second input pipeline is connected with the condenser outlet, the valve device and the load side input end in proper order, the soil side first input pipeline is connected with the condenser outlet, the valve device and the soil side input end in proper order; Wherein, the valve device includes the first cut-off valve and the second cut-off valve that are connected in series through the pipeline, the branch pipe is equipped on the pipeline between the first cut-off valve and the second cut-off valve, the flow switch and the drain valve are equipped on the branch pipe.

2. The water loop system of air conditioning with a cold / hot water switching valve device according to claim 1, wherein, It also includes a controller, the first cut-off valve, the second cut-off valve and the drain valve are connected with the controller through the wire.

3. The water loop system of air conditioning with a cold / hot water switching valve device according to claim 1, wherein, The device of the load side is located on the ground 0-80m.

4. The water loop system of air conditioning with a cold / hot water switching valve device according to claim 1, wherein, The pipeline of the soil side is buried in the ground 6-120m.

5. The water loop system of air conditioning with a cold / hot water switching valve device according to claim 1, wherein, The first cut-off valve on the load side first input pipeline is connected with the load side circulating pump, the second cut-off valve on the load side first input pipeline is connected with the evaporator inlet through the pipeline.

6. The water loop system of air conditioning with a cold / hot water switching valve device according to claim 1, wherein, The first cut-off valve on the load side second input pipeline is connected with the load side circulating pump, the second cut-off valve on the load side second input pipeline is connected with the condenser inlet through the pipeline.

7. The water loop system of air conditioning with a cold / hot water switching valve device according to claim 1, wherein, The first cut-off valve on the soil side first input pipeline is connected with the soil side circulating pump, the second cut-off valve on the load side first input pipeline is connected with the evaporator inlet through the pipeline.

8. The water loop system of air conditioning with a cold / hot water switching valve device according to claim 1, wherein, The first cut-off valve on the soil side second input pipeline is connected with the soil side circulating pump, the second cut-off valve on the load side first input pipeline is connected with the condenser inlet through the pipeline.

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