CN110094543B - Slider type heat insulation reversing valve and high-low temperature conversion system - Google Patents

Abstract

The invention relates to a slider type heat insulation reversing valve and a high-low temperature conversion system, wherein the reversing valve comprises a lower valve body, and a plurality of independent lower valve body chambers are arranged in the reversing valve; the air pipes are symmetrically connected to two sides of the lower valve body, and each air pipe is communicated with each lower valve body cavity; and the upper valve body is internally provided with a plurality of independent upper valve body cavities, the upper valve body is arranged on the upper part of the lower valve body in a sliding manner, the upper valve body cavities are matched with the lower valve body cavities, and when the relative positions of the upper valve body and the lower valve body are changed, a plurality of different circulation passages are formed. Compared with the prior art, the invention can simultaneously satisfy the circulation of the cold air channel and the hot air channel, and the reversing is convenient.

Description

A slider type adiabatic reversing valve and high and low temperature conversion system

technical field

The invention relates to the technical field of product performance testing equipment, in particular to a slider type adiabatic reversing valve and a high and low temperature conversion system.

Background technique

In the assessment of product performance, there is a type of high and low temperature test, that is, the sample is put into the test box, and the box is usually connected with a set of hot air generation device and a set of cold air generation device, and the hot air and cold air are alternately introduced at equal time intervals. , and controlled at the set temperature value to achieve a certain number of cycles, but the general high and low temperature test device has a complex structure, and the high and low temperature conversion operation is inconvenient, which affects the test results.

Patent CN 105425868 A discloses a continuous high and low temperature test device, comprising a shell, a two-stage heating cycle device, a two-stage refrigeration cycle device and a control device, the two-stage heating cycle device includes a primary heating cycle device, a primary heating control device, a secondary heating cycle device and a secondary heating control device, the two-stage refrigeration cycle device includes a primary refrigeration cycle device, a primary refrigeration control device, a secondary refrigeration cycle device and a secondary refrigeration control device, The device realizes a variety of heating and cooling modes, and realizes the continuous change of temperature, but the device cannot satisfy the circulation of two sets of gas circuits of cold and hot air at the same time.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a slider-type adiabatic reversing valve and a high-low temperature switching system in order to solve the above problems, so that the device can be simplified and run smoothly.

The object of the present invention is achieved through the following technical solutions:

A slider type adiabatic reversing valve, comprising:

The lower valve body is provided with multiple independent lower valve body chambers;

a plurality of air ducts symmetrically connected to both sides of the lower valve body, and each air duct communicates with each lower valve body chamber; and

an upper valve body with a plurality of independent upper valve body chambers inside, the upper valve body is slidably arranged on the upper part of the lower valve body,

The upper valve body chamber and the lower valve body chamber cooperate with each other, and when the relative positions of the upper valve body and the lower valve body change, various circulation passages are formed.

The upper valve body is provided with a push-pull rod, and the push-pull rod is connected with the driving mechanism.

The upper valve body, the lower valve body and the air duct are all made of metal material, an outer heat insulating layer is provided outside, and an inner heat insulating layer is provided inside.

The upper valve body and the lower valve body are connected by a sealing slide.

The sealing slide bar is made of polytetrafluoroethylene material.

There are 8 independent lower valve body chambers inside the lower valve body, and the 8 independent lower valve body chambers are arranged in a 2×4 row. correspond.

There are 6 independent upper valve body chambers inside the upper valve body, the upper valve body chambers are elongated, the middle two are arranged in pairs vertically, and the other 4 upper valve body chambers are arranged in pairs horizontally in the middle Both sides of the two upper valve body chambers;

The upper valve body chamber vertically arranged in the middle communicates the two lower valve body chambers in two adjacent rows;

The upper valve body chambers arranged laterally on both sides connect the two lower valve body chambers in two adjacent rows;

The lower valve body chamber is a square chamber, and the upper valve body chamber is a rectangular chamber.

A high and low temperature conversion system, which uses the above-mentioned slider-type adiabatic reversing valve to connect two test chambers, a set of hot air generation devices and a set of cold air generation devices, and specifically a heat pump can be used. After the heat pump starts to work, heat flow is generated at the same time. (Hot end) and cold flow (cold end), switch different passages through the reversing valve to realize the separation of cold and hot working conditions. When one test chamber enters hot air, the other enters cold air.

The slider type adiabatic reversing valve of the present invention is provided with a plurality of independent lower valve body chambers inside the lower valve body, the air duct is communicated with each lower valve body chamber, and a plurality of independent upper valves are arranged inside an upper valve body Body chamber, the upper valve body chamber and the lower valve body chamber cooperate with each other, when the relative position of the upper valve body and the lower valve body changes, the mutual dislocation of the lower valve body chamber and the upper valve body chamber forms a passage under different working conditions, and then realizes When one test box enters cold air, the other one enters hot air, alternately, which simplifies the device and runs smoothly.

Compared with the prior art, the present invention has the following advantages:

1) A heat pump can satisfy the circulation of two sets of air circuits of cold and hot air at the same time: connect the adiabatic reversing valve to two test boxes, hot air generating device (hot end) and cold air generating device (cold end), and by adjusting and changing The opening of the valve realizes that when one test chamber enters cold air, the other enters hot air, which is more energy-saving;

2) Convenient reversing: the reversing between the upper valve body and the lower valve body is realized by the relative sliding of the upper valve body and the lower valve body;

3) Large diameter: the box-type structure is adopted, and the large diameter air duct can realize large flux of heat flow or cold flow;

4) It can be automatically controlled: the adiabatic directional valve can be controlled by a time relay;

5) Low thermal conductivity: Insulation materials are laid inside and outside the valve body to reduce thermal conductivity.

Description of drawings

Fig. 1 is the appearance schematic diagram of a kind of slider type adiabatic reversing valve of the present invention;

Figure 2 is a schematic diagram of the joint of the upper and lower valve bodies of a slider type adiabatic directional valve according to the present invention;

3 is a schematic diagram of the internal structure of a slider type adiabatic directional valve of the present invention;

4 is a schematic diagram of the working principle of a slider type adiabatic directional valve of the present invention;

5 is a schematic structural diagram of a high-low temperature conversion system of the present invention;

Description of the marks in Figures 1, 2, and 3:

1—push-pull rod, 2—upper valve body, 3—lower valve body, 4—air duct, 5—outer insulation layer, 6—metal valve body, 7—inner insulation layer, 8—PTFE sealing slide.

Description of the marks in Figure 4:

H1—the circulating air outlet of the hot air device, H2—the circulating air inlet of the hot air device, C1—the circulating air outlet of the cold air device, C2—the circulating air inlet of the cold air device, A1—the hot air inlet/cold air outlet of the test box, A2— The hot air outlet/cold air inlet of the A test box, the hot air inlet/cold air outlet of the B1-B test box, and the hot air outlet/cold air inlet of the B2-B test box.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example

A slider type adiabatic reversing valve, comprising: a lower valve body with a plurality of independent lower valve body chambers inside; a plurality of air pipes symmetrically connected to both sides of the lower valve body, and each air pipe is connected with Each lower valve body chamber communicates with each other; and an upper valve body with a plurality of independent upper valve body chambers inside, the upper valve body is slidably arranged on the upper part of the lower valve body, and the upper valve body chamber and the lower valve body chamber cooperate with each other, When the relative positions of the upper valve body and the lower valve body change, various circulation passages are formed. A push-pull rod is arranged on the upper valve body, and the push-pull rod is connected with the driving mechanism.

Specifically to this embodiment, as shown in Figures 1-3, the adiabatic directional valve is composed of a push-pull rod 1, an upper valve body 2, a lower valve body 3 and an air duct 4, and a metal valve composed of the upper valve body 2 and the lower valve body 3 The body 6 is provided with an outer heat insulating layer 5 outside and an inner heat insulating layer 7 inside. The upper valve body and the lower valve body are connected by a polytetrafluoroethylene sealing slide bar 8 . There are 8 independent lower valve body chambers inside the lower valve body, the 8 independent lower valve body chambers are arranged in 2×4 rows and columns, and there are 8 air ducts, which correspond to each lower valve body chamber one by one. There are 6 independent upper valve body chambers inside the upper valve body, the upper valve body chambers are elongated, the middle two are arranged in pairs vertically, and the other 4 upper valve body chambers are arranged in pairs horizontally in the middle two upper valve body chambers. The upper valve body chamber arranged vertically in the middle connects the two lower valve body chambers in two adjacent rows; the upper valve body chambers arranged laterally on both sides connect the two lower valve body chambers in the adjacent two columns ; The lower valve body chamber is a square chamber, and the upper valve body chamber is a rectangular chamber.

Figure 5 shows a schematic diagram of the structure of a high-low temperature conversion system of the present invention. By connecting the slider-type adiabatic reversing valve to the A test box, the B test box, and a set of compressor systems (heat pump) using both cold and heat , in the figure, C represents the cold end, and H represents the hot end.

Figure 4 is a schematic diagram of the working principle, in the figure: H1—the circulating air outlet of the hot air device, H2—the circulating air inlet of the hot air device, C1—the circulating air outlet of the cold air device, C2—the circulating air inlet of the cold air device, A1—A The hot air inlet/cold air outlet of the test chamber, the hot air outlet/cold air inlet of the A2-A test chamber, the hot air inlet/cold air outlet of the B1-B test chamber, and the hot air outlet/cold air inlet of the B2-B test chamber.

c) in the figure is the structure of the lower valve body 3 and the air duct 4. When the upper valve body 2 moves to the right, as shown in a), the hot air circulation path is H1→A1→A box→A2→H2→Hot air generating device→ H1; the cold air circulation path is C1→B2→B box→B1→C2→cold air generating device→C1.

When the upper valve body 2 moves to the left, as shown in b), the hot air circulation path is H1→B1→B box→B2→H2→hot air generator→H1, and the cold air circulation path is C1→A2→A box→A1→C2 →Cold air generating device →C1, it can be seen that when hot air enters, the low-level port enters, and the high-level port exits, and vice versa when cold air enters.

The foregoing description of the embodiments is provided to facilitate understanding and use of the invention by those of ordinary skill in the art. It will be apparent to those skilled in the art that various modifications to these embodiments can be readily made, and the generic principles described herein can be applied to other embodiments without inventive step. Therefore, the present invention is not limited to the above-mentioned embodiments, and improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should all fall within the protection scope of the present invention.

Claims (8)

1. A slider type adiabatic reversing valve, characterized in that, comprising: The lower valve body has 8 independent lower valve body chambers inside, and the 8 independent lower valve body chambers are arranged in 2×4 rows and columns; 8 air ducts, symmetrically connected to both sides of the lower valve body, one-to-one correspondence with each lower valve body chamber, and each air duct communicates with each lower valve body chamber; and An upper valve body with 6 independent upper valve body chambers inside, the upper valve body chambers are elongated, the middle two are arranged in pairs vertically, and the other 4 upper valve body chambers are arranged in pairs horizontally in the middle Both sides of the two upper valve body chambers; The upper valve body is slidably arranged on the upper part of the lower valve body, the upper valve body chamber and the lower valve body chamber cooperate with each other, and when the relative positions of the upper valve body and the lower valve body change, various different circulation passages are formed ; The upper valve body chamber vertically arranged in the middle communicates the two lower valve body chambers in two adjacent rows; The upper valve body chambers arranged laterally on both sides connect the two lower valve body chambers in two adjacent rows. 2 . The slider-type adiabatic reversing valve according to claim 1 , wherein a push-pull rod is provided on the upper valve body, and the push-pull rod is connected with a driving mechanism. 3 . 3 . The slider-type adiabatic reversing valve according to claim 1 , wherein the upper valve body, the lower valve body and the air duct are all made of metal material, and an outer insulation layer is provided outside, and the inner There is an inner thermal insulation layer. 4 . The slider-type adiabatic directional valve according to claim 1 , wherein the upper valve body and the lower valve body are connected by a sealing slide. 5 . 5 . The slider-type adiabatic reversing valve according to claim 4 , wherein the sealing slider is made of polytetrafluoroethylene. 6 . 6 . The slider-type adiabatic reversing valve according to claim 1 , wherein the lower valve body chamber is a square chamber, and the upper valve body chamber is a rectangular chamber. 7 . 7. A high-low temperature conversion system, characterized in that, two test chambers, a set of hot air generating devices and a set of cold air generating devices are converted by the slider type adiabatic reversing valve as claimed in any one of claims 1-6. connected. 8 . The high-low temperature conversion system according to claim 7 , wherein the hot air generating device and the cold air generating device adopt a heat pump. 9 .

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